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    • 专利摘要:
    PROSTHETIC HEART VALVE PACKAGING AND DELIVERY SYSTEMS.These are dry prosthetic tissue heart valve packaging and delivery systems that include a primary sterile barrier that allows gas sterilization of the tissue implant and a secondary sterilized barrier that also prevents oxidation of the implant during storage long-term. Dry tissue heart valves andtheir delivery systems are placed inside a primary container such as a rigid tray that limits the movement of components in it. The primary container is placed inside a secondary container, such as another rigid tray or a flexible bag, and the assembly is then sterilized. The external sterile barrier can include a double seal so that a first gas permeable seal can be closed for sterilization, after which a second gas impermeable seal can be closed to seal any additional oxygen contact with the tissue implant. A retractable delivery handle for a surgical heart valve can be provided, which reduces the package size, and is useful for various types of prosthetic heart valves.
    公开号:BR112013015257A2
    申请号:R112013015257-5
    申请日:2011-12-15
    公开日:2021-04-20
    发明作者:Abhishek Gautam；Gregory A. Wright
    申请人:Edwards Lifesciences Corporation；
    IPC主号:
    专利说明:

    Descriptive Report of the Patent of Invention for "PACKAGING AND DELIVERY SYSTEMS OF PROTECTIVE HEART VALVES". Related Applications The present application claims priority under 35 USC §119 to Provisional Application No. US 611423,785, filed December 16, 2010. Field of the Invention The present invention relates generally to methods for packaging prosthetic heart valves and, more particularly, to assemblies and methods for the sterile storage of dry prosthetic heart valves and to their delivery systems.
    Background of the Invention Heart valve disease remains a significant cause of morbidity and mortality, resulting from a variety of disorders, including rheumatic fever and birth defects.
    Currently, the primary treatment for aortic valve disease is valve replacement.
    Worldwide, approximately 300,000 heart valve replacement surgeries are performed annually.
    About half of these patients receive bioprosthetic heart valve replacements, which use biologically derived tissues for flexible fluid collusion leaflets.
    The most successful bioprosthetic materials for flexible leaflets are whole porcine valves and separate leaflets made from bovine pericardium sutured together to form a three leaflet valve.
    The most common flexible leaflet valve construction includes three leaflets mounted to commissure posts around a peripheral support structure with free edges that protrude in a flow direction and meet or strain in the middle of the flow stream. flow.
    A suture-permeable sewing ring is provided around the inflow end.
    Bioprosthetic heart valves are conventionally packaged in vials filled with preservation solution for shipping and storage prior to use in an operating scenario.
    To minimize the possibility of damage to the relatively delicate bioprosthetic heart valves, they are stabilized with framing structure to prevent them from striking the inner side of the bottle.
    Prior to implantation in a patient, the valve is removed from the bottle and then rinsed 5 in a shower or immersed and shaken in a saline bath.
    Prosthetic valves typically have a valve retainer located centrally and sutured thereto—to the inflow seam ring for the mitral valves and to the outflow commissure tips for the aortic valves.
    Glutaraldehyde is widely used as a storage solution due to its sterilizing properties, but it is known to contribute to calcification.
    Strategies to incorporate chemical substances in order to block or minimize unbound glutaraldehyde residues in the final product have been shown to attenuate calcification in vivo.
    One of these strategies is to dehydrate the bioprosthetic tissue in a glycerol/ethanol mixture, sterilize it with ethylene oxide, and package the final "dry" product. This process eliminates the calcification and potential toxicity effects of glutaraldehyde as a storage and sterilizing solution.
    Several methods have been proposed for the use of sugar alcohols (ie, glycerin), alcohols and combinations thereof as post-glutaraldehyde processing methods so that the resulting tissue is in a "dry" state rather than a wet state with excess glutaraldehyde.
    Glycerol-based methods can be used for such storage, as described in Parker et al. (Thorax 1978 33:638). Similarly, U.S. Patent No. 6,534,004 (Chen et al.) describes the storage of bioprosthetic tissue in polyhydric alcohols such as glycerol.
    In processes where the tissue is dehydrated in an ethanol/glycerol solution, the tissue can be sterilized with ethylene oxide (ETO), gamma irradiation or electron beam irradiation.
    More recently, Dove et al., in U.S. Patent Application No. 2009/0164005, propose solutions to certain detrimental changes in dehydrated tissue that can occur as a result of oxidation.
    Dove et al. propose the permanent capping of the aldehyde groups in the fabric (a-
    reducing nimation). Dove et al. further describe the addition of chemical substances (for example, antioxidants) to the dehydration solution (for example, ethane/glycerol) to prevent tissue oxidation during sterilization (ethylene oxide, gamma irradiation, electron beam irradiation, etc.) and 5 storage.
    In view of the development of dry tissue heart valves, opportunities arise for an alternative packaging for such valves that will save money and facilitate activation in the field of operation.
    Summary of the Invention The present application discloses sterile packaging methods for dry bioprosthetic heart valves in combination with their delivery > systems.
    New tissue treatment technologies allow you to pack tissue valves without liquid glutaraldehyde in a dry package.
    A sterile dual barrier package disclosed herein contains, protects and preserves the bioprosthesis dry during ETO sterilization, transit and storage.
    A system for packaging a dry tissue heart valve and its delivery system disclosed herein includes a dry tissue heart valve coupled to its valve delivery system.
    A primary container sized to receive the dry tissue heart valve coupled to its delivery system has a gas permeable seal. A secondary container sized to receive the primary container is made of a gas impermeable material and has a double seal that includes a gas-permeable seal and a gas-impermeable seal.
    The primary container can comprise a flexible bag or a relatively rigid tray.
    Similarly, the secondary container can comprise a flexible bag or a relatively rigid tray.
    In one embodiment, both the primary container and the secondary container comprise relatively rigid trays.
    The secondary container may comprise a non-gaseous permeable foil label seal or a foil pouch.
    The secondary container can also contain a desiccant.
    te- In accordance with an embodiment, the valve delivery system includes a retractable handle, which may have telescopic sections.
    Desirably, the telescopic sections include 5 open gas flow openings for interior lumens.
    In another modality, the prosthetic heart valve is expandable, and the delivery system includes a balloon catheter.
    Alternatively, the prosthetic heart valve has a non-expandable valve portion and an expandable stent, and the delivery system includes a balloon catheter.
    Another method disclosed herein is for packaging a dry tissue heart valve, and comprises the steps of: providing a primary container having a gas permeable seal; place a dry tissue heart valve and its delivery system in the primary container and close the gas permeable seal; limiting heart valve movement in the primary container while providing gas flow passages around the heart valve; place the sealed primary container with the heart valve and delivery system thereon in a secondary container made of a gas-impermeable material and seal the secondary container with a gas-permeable seal to form a dual barrier assembly; subject the double barrier assembly to gas-based sterilization; and applying a gas-tight seal to the secondary container to prevent oxygen or water from passing through.
    In the aforementioned method, the step of subjecting comprises exposing the double barrier assembly to ethylene oxide (ETO) gas. In accordance with a preferred embodiment, the primary container is a tray that has an upper surface and a cavity surrounded by an upper rim and descending downwards from it, the tray being made of gas-impermeable material, in which the dry tissue heart valve and its delivery system are placed in the cavity of the band.
    already.
    In addition, the tray sealing step includes covering the top surface of the tray with a gas permeable lid.
    The secondary container may be a second tray which has an upper surface and a cavity surrounded by an upper rim and descending downwardly therefrom.
    The second tray is made of gas-tight material and the cavity is sized to receive the first tray, and the gas-tight seal is a gas-tight label sealed to the upper edge of the second tray.
    In one embodiment, the second tray comprises a double flanged upper rim, and additionally includes a gas-permeable cap sealed to an inner flange and the gas-impermeable label sealed to an outer flange.
    Or the secondary container can be a flexible bag that includes a gas-impermeable seal, and the bag can further include a gas-permeable seal within the gas-impermeable seal.
    In accordance with one embodiment of the present application, a system for manipulating a heart valve includes a prosthetic heart valve, a heart valve delivery system, and a valve retainer releasably attached to the prosthetic heart valve.
    The heart valve delivery system features a retractable handle with a series of concentric telescopic sections, with the handle having a retracted state and an elongated state.
    A distal telescoping section of the handle has a locking head that protrudes in a distal direction.
    The valve retainer includes a handle coupler which extends in a proximal direction and which has a structure sized and shaped to mate with the locking head of the handle so that the prosthetic heart valve extends distally from the telescopic section distal to the handle.
    In a preferred embodiment, the telescopic sections are generally tubular and gradually widen in diameter from the far telescopic section! for a proximal telescopic section.
    A proximal telescopic section desirably has an ergonomic handle with undulations to receive a user's fingers.
    In one embodiment, the telescopic sections include interference tabs that prevent any section from passing completely into another section and that prevent the sections from disengaging after the stretched state.
    The system may additionally include elastomeric seals between adjacent telescopic sections to provide frictional tightness between the telescopic sections.
    The lock head is preferably elastomeric and the frame on the handle coupler is sized and shaped to match the lock head which comprises an internal cavity into which the elastomeric lock head fits closely.
    Desirably, all but a proximal telescopic section include outwardly directed sealing sections at proximal ends thereof, and all but the distal telescopic section include an inwardly directed flap at distal ends thereof and a circular feature directed inwardly spaced closely from the distal ends of it.
    Converting the handle to the elongated state locks each seal section in a region between the inwardly directed tab and the inwardly directed circular feature of the adjoining telescopic section.
    The system is particularly useful for handling dry prosthetic tissue valves.
    The system may additionally include storage containers for the prosthetic heart valve, a heart valve delivery system and a valve retainer.
    For example, a primary container is sized to receive the heart valve coupled to its retainer and the delivery system with the handle in its retracted state, and the primary container has a gas permeable seal.
    A secondary container is sized to receive the primary container, the secondary container being made of a gas-tight material and having a double seal that includes a gas-permeable seal and a gas-tight seal.
    Telescopic sections can include gas flow openings open to interior lumens to allow good flow during gas sterilization.
    Another method of manipulating a heart valve comprises, first connecting, acquiring a sterile package that contains a removable prosthetic heart valve secured to a valve retainer.
    The retainer is coupled to a heart valve delivery system that has a retractable handle! with a series of concentric telescopic sections.
    The handle has a retracted state with a first length and an elongated state with a second length relatively greater than the first length, and the handle is contained in the sterile package in its retracted state.
    The method includes removing the valve, retainer and handle from the sterile casing, converting the handle from its retracted state to its extended state, including pulling the telescopic sections to lengthen the handle until the adjacent telescopic sections are locked together , and deliver and implant the prosthetic heart valve.
    In the above method, the telescopic sections are preferably generally tubular and gradually widen in diameter from a distal telescopic section to a proximal telescopic section, and wherein the proximal telescopic section has an ergonomic handle with undulations to receive the fingers of a user.
    Telescopic sections can include interference tabs that prevent any section from passing completely within another section and that prevent sections from disengaging after the stretched state.
    Desirably, elastomeric seals are provided between adjacent telescopic sections to provide friction tightness between the telescopic sections.
    In a preferred embodiment, all but one proximal telescopic section include outwardly directed sealing sections at proximal ends thereof, and all but one distal telescopic section include an inwardly directed flap at distal ends thereof and a inwardly directed circular feature spaced closely from the distal ends thereof, wherein converting the handle to the elongated state locks each seal section in a region between the inwardly directed tab and the inwardly directed circular feature of the adjacent telescoping section.
    The distal telescopic section of the handle preferably has a locking head that protrudes in a distal direction and the valve retainer includes a handle coupler that extends in a proximal direction and which has a dimensional structure.
    nothing is shaped to match the handle locking head so that the prosthetic heart valve extends distally from the distal telescopic section of the handle.
    In addition, the locking head is preferably elastomeric and the structure in the knob coupler is sized and shaped to correspond with the locking head which comprises an internal cavity in which the elastomeric locking head fits closely.
    The handling method is particularly useful for dry prosthetic tissue valves and the sterile packaging does not contain liquid preservative.
    . 10 of the
    The sterile container may include a primary container and a secondary container, the primary container having a gas permeable seal and providing gas flow passages therein around the heart valve, and the sealed primary container being placed in the container secondary.
    The secondary container includes a double seal with a gas-permeable seal within a gas-impermeable seal capable of preventing oxygen or water from passing therethrough. The method further includes removing the gas-impermeable seal from the secondary container and subjecting the sterile container to gas-based sterilization, remove the gas-permeable seal from the secondary container, remove the gas-permeable seal from the primary container, and perform the step of removing the valve, retainer, and handle from the sterile package.
    Preferably, the primary container is a tray having an upper surface and a cavity surrounded by an upper rim and descending downwards therefrom, the tray being made of a gas-impermeable material, in which the valve - 25 lanes of dry tissue and its delivery system are placed in the tray cavity.
    In one embodiment, the secondary container comprises a flexible bag.
    A further understanding of the nature and advantages of the present invention is set forth in the following description and claims, particularly when considered in conjunction with the accompanying drawings in which similar parts have similar reference numerals.
    Brief Description of Drawings
    The invention will now be explained and other advantages and features will appear with reference to the accompanying schematic drawings, in which: Figure 1 is an assembled perspective view of an exemplary dry prosthetic heart valve connected to its delivery system 5 in an extended configuration; Figure 2 is an exploded perspective view of the components of the prosthetic heart valve and delivery system of Figure 1; Figure 3 is a longitudinal cross-sectional view of the assembled prosthetic heart valve and delivery system of Figure 1; Figures 4A to 4C are opposite end elevational views of the assembled prosthetic heart valve and delivery system of Figure 1 in its extended configuration; Figure 5A is an elevation view similar to Figure 4A but rotated 90°, and Figure 5B is the same as Figure 5A but with the heart valve delivery system in a retracted configuration; Figure 6A is an elevation view similar to Figure 5A, but showing internal features in dashed lines; Figure 6B is a longitudinal cross-sectional view of the heart valve and extended delivery system of Figure 6A taken along line 6B-6B, and Figure 6C is a detailed view thereof; Figure 7 is a longitudinal cross-sectional view of the heart valve and delivery system extended as shown in Figure 6B with the delivery system retracted; Figure 8A is an elevation view of an alternative heart valve delivery system showing internal features in dashed lines; Figure 8B is a longitudinal cross-sectional view of the heart valve and delivery system of Figure 8A taken along line 8B-8B; Figure 9 is a longitudinal cross-sectional view of the heart valve and delivery system extended as shown in Figure 8B with the delivery system retracted; Figure 10 is an exploded pipe view of a car valve.
    prosthetic diac and the retracted delivery system as shown in Figure 5B mounted on an exemplary primary storage container in the form of a tray; Figure 11 is a perspective view of the prosthetic heart valve and tray delivery system as in Figure 10 contained in a secondary storage container in the form of a pouch; Figures 12A through 12B are ruptured plan views of an expandable prosthetic heart valve and its delivery system in both retracted and expanded configurations; Figure 13 is an exploded perspective view of the expandable prosthetic heart valve and delivery system as shown in Figure 12A together with a storage card system and a protective shipping package; Figures 14A and 14B are perspective views of the primary and secondary storage containers for the assembly of Figure 13 in the form of pouches; Figure 15 is an exploded plan view of the expandable prosthetic heart valve and delivery system as in Figure 12A mounted on an exemplary primary storage container in the form of a tray; Figure 16 is a perspective view of the prosthetic heart valve and tray delivery system as in Figure 15 contained in a secondary storage container in the form of a pouch; Figures 17A to 17D and 18 are broken perspective and elevation views of a hybrid prosthetic heart valve and its delivery system; Figure 19 is an exploded plan view of the hybrid prosthetic heart valve and delivery system as in Figure 17B mounted on an exemplary primary storage container in the form of a tray; Figure 20 is a perspective view of the hybrid prosthetic heart valve and tray delivery system as in Figure 19 contained in a secondary storage container in the form of a pouch; Figure 21 is an exploded plan view of the hybrid prosthetic heart valve and delivery system as in Figure 17B mounted in an exemplary primary storage container in the form of a tray; and Figure 22 is an exploded plan view of the hybrid prosthetic heart valve and tray delivery system as in Figure 21 contained in a secondary storage container in the form of an external tray.
    Detailed Description of Preferred Embodiments The present invention provides improved packaging systems for dry prosthetic heart valves and their delivery systems that provide an efficient vehicle for gas sterilization, and prevent valve oxidation during long-term storage.
    Sheath systems for storing dry heart prosthetic tissue valves do not require liquid containment.
    The present application provides sets of procedures for storing bioprosthetic heart valves, in particular valves that have been dehydrated and are not stored immersed in a preservative solution.
    The term "dry" or "dehydrated" bioprosthetic heart valves simply refers to the ability to store those heart valves without the preservative solutions.
    There are several proposed methods for drying bioprosthetic heart valves, and for drying tissue implants in general, and the present application provides a storage solution for bioprosthetic heart valves that are processed by any of these methods.
    A particularly preferred method of drying bioprosthetic heart valves is disclosed in U.S. 2008/0102439 to Tian, et al.
    An alternative drying method is disclosed in U.S. Patent 6,534,004 to Chen, et al.
    Again, these and other methods for drying bioprosthetic heart valves can be used prior to implanting sets of storage procedures.
    described in this document.
    Several exemplary bioprosthetic heart valves and their delivery systems are shown and described in the present application.
    Each of these different types of heart valves can be processed so that they are stored dry.
    The reader will understand that the present methodologies apply to any and all bioprosthetic heart valves that are stored dry, and are not limited to those exemplary valves shown in this document.
    In particular, prosthetic heart valves for implantation in any of the four native valve annulus - aortic, mitral, pulmonary and tricuspid - can be dehydrated and stored in accordance with the principles described herein.
    In addition, several sets of procedures for packaging dry bioprosthetic heart valves and their delivery systems are illustrated and described in this document, although these sets of procedures may still be applied to other packaging configurations.
    In general, a bioprosthetic heart valve must be stored in sterile conditions, which requires at least one sterile container.
    Preferably, however, a double barrier packaging system is used to reduce the chance of contamination of the implant at the time of surgery.
    Figure 1 illustrates an exemplary dry prosthetic heart valve 20 connected to a telescopic delivery system 22 in an extended configuration, while Figure 2 shows the components, and Figure 3 is a longitudinal cross-sectional view of the assembly.
    Heart valve 20 comprises a plurality, preferably three, of flexible bells 24 which are mounted to a peripheral stent structure 26 and form fluid occluding surfaces in the valve port to form a one-way valve.
    Stent structure 26 includes a plurality of generally axially extending commissures 28 circumferentially distributed around the valve between and equal to the number of bells 24. Although not shown, additional heart valve components 20 typically include L1 . m internal stent and/or a wire-shaped support structure that provides a structural skeleton that surrounds an inflow orifice and extends to the commissures.
    28. The internal components of heart valve 20 can be made of plastic or suitable metal. As is well known, adjacent flexible leaflets 24 connect to and extend upwards to meet along each of the corners 28. In the illustrated embodiment, the structural components of the heart valve 20 support each flexible leaflet 24 by along a valve cusp 30 and along two edges of commissure 28. A free edge of each leaflet 24 extends inward towards a central flow orifice and coerces, or is met, with the free edges of the other fdlolos as shown. The valve orifice is oriented around a geometric axis along an inflow/outflow direction through the valve. Valve commissures 28 protrude from the outflow direction, with convex valve cusps 30 extending in the inflow direction between adjacent commissures. Although not shown, bioprosthetic heart valves often include at the inflow end a seam ring that conforms to the wavy contours of the valve cusps, or defines a flat, generally circular ring. The present application is not to be considered limited to a particular valve construction unless explicitly mentioned herein. Flexible leaflets 24 can be made from a variety of bioprosthetic tissue, such as bovine pericardium where individual leaflets 24 are cut from the pericardial sac of a cow. Some recent valves include conditioned leaflets 24 in which the thickness of individual leaflets varies at different points, such as thinner in the middle and thicker around the edges where the sutures pass. Sets of procedures such as compression of the pericardium, laser scraping or mechanical thinning can be used. An exemplary dry tissue heart valve that can be stored without the need for preservative fluids in the packaging systems described herein is available from Edwards Lifesciences of Irvine, CA. A treatment process
    1. Similarly, the particular delivery system 22 exemplifies many delivery systems, which typically include retainer 40 and an elongated handle for manipulation by the surgeon.
    For example, many conventional systems utilize a simple elongated rod that may or may not be bendable and that includes a distal male threaded end that mates with a female threaded socket on retainer 40. The exemplary delivery system 22 is particularly well suited. to the sets of storage procedures described in this document as it can be retracted from its extended configuration shown in Figure 1. It is important to understand, however, that although the delivery system
    Exemplary telescopic ga 22 has distinct advantages, such as an intuitive and economical design, it can be replaced by other retractable systems.
    For example, instead of having telescopic sections, the delivery system 22 can be foldable like a pocketknife, or constructed with an accordion-like or scissor-like extension mechanism.
    Those skilled in the art will understand that there are several ways to convert a delivery system from the elongated configuration shown in Figure 1 to the retracted configuration shown in Figure 5B.
    The present application contemplates the storage of bioprosthetic heart valves with any number of delivery systems, and the principles described in this document are not to be considered limited to any particular system, unless excluded by the language of the claims.
    During implantation, the surgeon manipulates the extended delivery system 22 and advances the heart valve 20 into implant position in the target annulus.
    Once in position, and typically after anchor sutures have been activated between a sewing ring (not shown) and the surrounding native annulus, the surgeon separates the fixation sutures that couple retainer 40 to valve 20, and removes delivery system 22. Now referring to Figures 1 to 7, elements of exemplary telescopic delivery system 22 will be described.
    System 22 includes a large proximal handle section 50 that has a proximal end cap 52. In the illustrated embodiment, handle section 50 features a wavy outer contour that allows for better handling and grip when handling the telescopic components and fur. surgeon during valve delivery, such as featuring an ergonomic handle with undulations to receive the surgeon's fingers. The handle section 50 is substantially tubular and a distal end 54 thereof fits around a proximal end 56 of a tubular intermediate section 58. The outer diameter of the intermediate section 58 is sized to closely fit the lumen. 60 of the handle section 50. Similarly, a distal end 62 of the intermediate section 58 fits with a proximal end 64 of a cylindrical distal section 66. The outer diameter of the distal section 66 is sized to closely fit. in lumen 68 of the intermediate section 58. In order to reduce weight and maintain balance along the length of the telescopic delivery system 22, the distal section 66 is also desirably tubular having an inner lumen.
    70. The distal end of distal section 66 includes a faceplate 72 from which protrudes in a distal direction a plunger rod 74 and a locking head 76, the function of which will be described below. The main components of the telescopic delivery system 22 - the handle, intermediate and distal sections - are desirably made of a rigid, light weight polymer such as ABS (Acrylonitrile-Butadiene-Styrene), although any light weight material is suitable for use. surgical procedure can be used. More particularly, materials for the delivery system components can be an injection molded or heat-extruded polymer, or machined stainless steel, cobalt chromium, Nitinol, or other metal alloy. Plunger rod 74 is further made of a rigid polymer such as ABS, although lock head 76 is desirably formed of an elastomeric material such as silicone rubber. Similarly, each of a pair of O-ring seals 78 interposed between the telescopic sections is formed of an elastomeric material such as silicone. The 78-shaped O-ring seals provide a degree of friction tightness between the telescopic sections.
    coppice which makes the elongated mount rigid to facilitate manipulation of the heart valve 20 during delivery, although the use of silicone adds lubricity and therefore softens the relative sliding of the sections.
    With reference to the exploded view of Figure 2 and the sectional views 5 in Figures 3, 6B and 6C, the interaction between the main telescopic components 50, 58, and 66 is now described.
    Both the distal ends 54, 62 of the two larger sections - the handle section 50 and the intermediate section 58, respectively - include inwardly directed tabs 80 which interfere with outwardly directed tabs 82 at the proximal ends 56, 64 of the intermediate section 58 and of the distal section 66, respectively.
    These interaction tabs 80, 82 prevent the three sections from disengaging after the elongated configuration shown in the Figures.
    In addition, the distal ends 62, 72 of the two smaller sections - the intermediate section 58 and the distal section 66 - have outwardly directed flanges 84 that interfere with the distal ends 54, 62 of the handle section 50 and the middle section 58, respectively.
    These outwardly directed flanges 84 prevent each of the two smaller sections from sliding completely into the cavities of the adjacent larger section.
    It should be noted that the difference in diameters is small and internal conduction ramps can be provided on one or both of each pair of interference flanges so that the cooperating sections can snap together with minimal force during operation. mounting.
    Figure 2 best shows a pair of sliding seal sections formed at the proximal ends of the intermediate section 58 and the » distal section 66. More particularly, the seal sections include, on the outside of sections 58, 66, annular recessed regions 86 which are created between the respective proximal ends 56, 64 and directed away from the circular flanges 88. The elastomeric O-rings 78 fit closely into the recessed regions 86 as seen in the detailed view of Figure 6C.
    The outer diameter of the 78 O-rings is slightly larger than the inner diameter of the lumen of the respective matching section so that a frictional interference is created.
    Each of the larger sections 50, 58 includes an inwardly directed circular feature series 90 such as a series of rounded protrusions or a continuous circular rib as shown that projects inwardly from their respective lumens 60, 68. axial length of the seal sections 5 receiving the O-rings 78 is approximately equal to the axial distance between the circular feature 90 and the respective distal ends 54, 62 of the larger sections 50, 58. This can be seen in Figure 6C. When the sections are extended, as seen in Figure 1, the sealing sections are locked in the region between the circular feature 90 at the distal ends of the sections 50, 58, thus maintaining the extended configuration. However, the circular feature 90 is rounded and equal to or slightly smaller in diameter than the outside diameters of the circular flanges 88 and the proximal ends 56, 64, thus allowing the sections to be extended beyond a pulling force. threshold and retracted beyond a compression force threshold. The pulling force threshold will be set at a level that allows for easy extension of the system 22, but the compression threshold will be calibrated so that it is greater than the force expected during valve delivery. Thus, system 22 can be extended relatively easily and remains in that configuration during use. Referring now to Figure 2, and the sectional view of Figure 3, valve retainer 40 includes three outwardly directed legs 100 sized and shaped to correspond with commissures 28 of the valve.
    20. Typically, the commissures are covered with cloth, and sutures are used to connect the legs 100 thereto. As mentioned above, in an alternative embodiment the legs 100 may be larger and slanted in the axial direction so as to contact the cusps 30 of the valve 20. Various other retainer arrangements are known. Retainer 40 further includes a cylindrical handle coupler 102 which extends in a proximal direction. As seen in Figures 6B and 7, the handle coupler 102 defines two internal cavities — a larger proximal cavity 104 and a smaller distal cavity 103. The distal cavity 103 is sized and shaped approximately the same as the locking head 76 at the distal end of the delivery system 22. A narrow neck region 106 between the cavities 103, 104 has an inside diameter less than the outside diameter of the locking head 76. In use, the prosthetic heart valve 20 and the delivery system 5 22 are packaged in the retracted configuration of Figures 5B and 7. As seen in Figure 7, the locking head 76 resides within the larger proximal cavity 104 during storage. Just prior to the valve implant procedure, a technician pushes the entire delivery system 22 in its retracted configuration toward the coupler 102, as seen by the arrow on the plunger rod 74, so that the elastomeric locking head 76 is forced past the narrow neck 106 and fits snugly into the smaller distal cavity 103. Subsequently, the technician pulls the handle section 50 away from the coupler 102 to extend the telescopic sections 50, 58 as seen by the arrows on the right , until the O-rings 78 make a path past the circular feature 90, as seen in Figure 6B. The system is now effectively locked in its out-of-the-box extended configuration. Figures 8A to 8B and 9 illustrate a slight modification to the delivery system 22. In particular, a locking head 76' has a slightly projectile and pointed shape, as does the smaller distal cavity 103' defined in the coupler 102' . The pointed nature of the 76' locking head facilitates passage through the narrow neck region.
    106. Figure 10 illustrates an exemplary primary storage container for the prosthetic heart valve 20 and the retracted delivery system 22 as seen in Figure 5B. The primary storage container comprises a molded storage tray 110 and a gas-permeable foil-like lid 112. In particular, the assembled heart valve 20 and delivery system 22 are placed in a cavity of the storage tray 110, where the lid 112 is adhered to an upper edge 114 of the tray. The upper rim 114 defines the upper surface of the tray, and the process of adhering the lid 112 to the rim.
    114 can be performed easily through the use of automated equipment.
    Adhesive may be provided on top rim 114, or on the underside of cap 112. In a preferred embodiment, inwardly directed features (not shown) provided in tray cavity 5 110 secure heart valve 20 and delivery system 22 against movement in it.
    Preferably, these features engage with tactile or pressure feedback.
    Since tray 110 secures the components in this manner, heart valve 20 is stably suspended in the cavity without touching the sides of tray 110. Preferably, cap 112 is sized closely to the perimeter of upper rim 114, and the adhesive strip it is a pressure seal adhesive or a heat seal adhesive to facilitate pressure and/or temperature sealing.
    The material of the lid 112 is breathable, or gas permeable, to allow gas sterilization of the sealed contents in the tray 110, in particular the dry tissue heart valve 20. A suitable gas permeable material is a sheet of fiberglass fibers. high density polyethylene, which is difficult to tear but can be easily cut with scissors.
    The material is highly breathable and water vapor and gases can pass through the fibers, but not liquid water.
    For example, various DuPont Tyvek materials can be used.
    In addition, exemplary hot melt adhesives used to secure lid 112 to tray 110 can be obtained from Perfecseal or Oliver-Tolas, for example.
    Such material allows the sterilization of the tray contents through the use of Ethylene Oxide (ETO), which gradually passes through the lid 112 to the inner tray.
    The 112 lid features a sterile barrier and prevents the ingress of microorganisms.
    Tray 110 is a gas-tight molded material such as polyethylene terephthalate (PETG) copolymer. Various medical storage and packaging materials suitable for assembling the components of this order are available from companies such as Dupont, Perfecseal, Oliver-Tolas and Mangar.
    Other means of sterilization include gamma irradiation or electron beam irradiation.
    Ethylene oxide (ETO), also called oxirane, is the organic compound with the formula C2H4O.
    It is commonly handled and shipped as a refrigerated liquid - ETO is often used as a sterilant as it destroys bacteria (and their endospores), mold and fungi. IT'S
    5 used to sterilize substances that would be damaged by sets of high temperature procedures such as pasteurization or autoclave processes.
    Ethylene oxide is widely used to sterilize most medical supplies such as dressings, sutures and surgical instruments in a traditional chamber sterilization method, where one chamber has most of the oxygen removed (to prevent an explosion. ) and then flooded with a mixture of ethylene oxide and other gases which are subsequently aerated.
    Certain features of the delivery system 22 and tray 110 facilitate gas sterilization, such as with ETO, although other means such as gamma irradiation or electron beam irradiation can be used.
    Specifically, delivery system 22 provides gas flow passages for gas flow in and out of the various components.
    A good flow of sterilizing gas through the components facilitates rapid and complete sterilization of the dry bioprosthetic tissue heart valve 20 and rapid removal of residual ethylene oxide and ethereal chlorohydrin residual gas ( ECH). Referring to Figures 1 to 7, and in particular to Figure 2, each of the telescopic sections 50, 58, 66 includes at least one, and preferably at least two, openings 120 in its tubular sidewalls.
    Preferably, since the delivery system 22" is stored in its retracted configuration as seen in Figure 5B, the openings 120 are located towards the proximal ends of the telescopic sections 50, 58, 66 so that the openings of adjacent sections are not separated by O-ring seals 78 and so that gas can flow into the concentric lumens of the sections.
    The openings 120 allow the passage of sterilization gas into the internal lumens of the components, which completely sterilize all parts of the system.
    Consequently, there are no dead space cavities in delivery system 22. Similarly, tray 110 retains heart valve 20 and delivery system 22 securely thereto, but provides adequate plumbing in and around the components in the same to eliminate any enclosed spaces.
    The sterilizing gas can therefore flow evenly through the entire enclosure.
    An advantage of the packaging solutions described in this document is a double sterile barrier, in which the internal and external sterile containers allow gas sterilization, such as with ETO, and with a second seal the external sterile container also provides an oxygen barrier to the product after sterilization.
    The internal sterile container was described above with reference to Figure 10 in the form of a storage tray 110 sealed with the lid 112. The sealed storage tray 110 is received within an external or secondary container and the dual barrier assembly is then sterilized so that there are redundant sterile barriers.
    Subsequently, the dual barrier assembly is sealed to prevent oxygen from reaching the heart valve, thereby preventing oxygenation and potentially reducing calcification after implantation.
    In the exemplary packaging sequence, the primary and secondary containers are first assembled together and each is closed with a gas permeable barrier to form a dual barrier assembly that is gas sterilized.
    Subsequently, the oxygen barrier is added, such as converting the secondary container from gas-permeable to gas-impermeable.
    However, if the entire process is done under sterile conditions, such as in a clean room environment, the primary container can be closed and sterilized before being placed in the secondary container, which is then closed and sterilized.
    In other words, there may be one or two sterilization steps before sealing the entire assembly against oxygen ingress.
    Desirably, a desiccant is used in the inner and/or outer packaging layers.
    For example, a desiccant bag can be inserted with the heart valve and delivery system in the inter-package.
    in, to absorb any residual water vapor trapped therein when the gas permeable tray cover 112 is closed.
    A second desiccant bag can be inserted between the inner and outer barriers to absorb any residual water vapor therein, or it can be the only desiccant bag used.
    The present application describes two different secondary barriers — one is a storage tray similar to those described above, and the other is a flexible bag.
    The secondary barrier protects and preserves the primary sterile barrier packaging in a sterile environment,
    . 10 and prevents oxygen from reaching the heart valve in it.
    An additional external shelving box can be used to facilitate temperature monitoring during dispensing and storage, and to protect the delicate implant from dispensing hazards such as shock, impact and external temperatures. Figure 11 is a perspective view of the prosthetic heart valve 20 and delivery system 22 in the primary storage tray 110 with the lid 112 attached (not shown) as in Figure 10 and then contained in a container. of secondary storage in the form of a pouch 130. Desirably, the storage pouch 130 includes a double sealing system at its open end that provides both a gas-permeable portion and a gas-impermeable portion, depending on which seal. it's closed.
    More details on such a double sealing system will be provided below with reference to the modality shown in Figures 13a14. Figures 12A through 12B illustrate an expandable prosthetic heart valve 140 and its delivery system 142. Expandable prosthetic heart valves are known in the art, and the illustrated valve 140 is representative of several similar valves that can be converted from a narrow build configuration to a wider expanded configuration.
    Typically, valves are balloon-expanded into position in a target annulus after they have been advanced through the vasculature.
    The most common delivery routes start on the air-
    carotid and femoral arteries, although other more direct routes through thoracic ports are also known.
    A particularly successful expandable prosthetic heart valve is the Edwards SAPIEN Transcatheter heart valve available from Edwards Lifesciences of lrvine, CA.
    The Edwards SAPIEN valve can be placed via either a transfemoral (Edwards Lifesciences RetroFlex 3 Transfemoral Delivery System) or a transapical (Ascendra Ascendra Delivery System) approach. Figures 12A through 12B illustrate a system very similar to the Ed- 10wards Lifesciences RetroFlex 3 Transfemoral Delivery System.
    Delivery system 142 includes an elongated catheter 144 that has an expansion balloon 146 proximate a distal end thereof.
    The prosthetic heart valve 140 is mounted around the balloon 146 and is expanded therethrough.
    The system additionally includes proximal luer-type connectors 148 for balloon inflation fluid delivery, passage of a guidewire, or other similar functions.
    In the exemplary embodiment, prosthetic heart valve 140 includes a plurality of balloon-expandable brackets 150 between three axially oriented commissure bars 152. The bioprosthetic tissue is mounted in the structure created by brackets 150 and bars 152. as with supplementary cloth.
    Figure 13 is an exploded perspective view of the expandable prosthetic heart valve 140 and delivery system 142 as shown in Figure 12A along with various storage cartons and protective shipping carton.
    Specifically, the delivery system 142 together with a tubular sheath 154 is mounted on a first rigid storage card 160 which, in turn, is mounted on a second larger storage card 162. A pair of small protective covers 164 is secured over the first storage card 160 at the distal and proximal ends of the delivery system 142. The delivery system assembly 14.2 on the cards 160, 162 is placed in a shelf box 166 that has protective styrofoam or other similar protective inserts 168 in it.
    Shelf box 166 will be desirably constructed of cardboard with a tamper-proof box label as an indicator of package integrity.
    Product labeling 170 and a temperature indicator 172 for monitoring temperature during dispensing and storage are affixed to shelf box 166. Figures 14A and 14B are perspective views of primary and secondary storage containers for the assembly of Figure 13 in the form of bags.
    In particular, a gas-permeable primary pouch 180 receives the shelf box 166 and is then fitted into a larger gas-impermeable secondary pouch 182. In a preferred embodiment, the secondary pouch 182 includes the above-mentioned double sealing system.
    In particular, a first gas-permeable portion 192 adjacent to an open end ("the left"), and a second larger gas-impermeable portion 194 that is closed at the right end.
    The entire pouch 182 may be made from the gas-impermeable portion 194, except for a strip of the first portion 192 of the top layer, or the first portion 192 may form both the top layer and the bottom layer of the pouch adjacent to the open end. .
    A first seal 196 extends across the width of the open mouth of the pouch 182 in the area of the first gas permeable portion 192. The second seal 198 also extends across the width of the pouch 182 but completely within the second gas impermeable portion 194. During packaging, primary storage tray 110 is placed in pouch 182 and first seal 196 is closed, at which time all contents are gas sterilized.
    After the assembly is sterile, the second seal 198 is closed to prevent any additional oxygen from entering the interior of the pouch 182. The two seals 196, 198 allow gas sterilization of the contents of the pouch 182 prior to complete sealing.
    More particularly, the first seal 196 can be closed, at which point the package can be subjected to sterilization with ETO.
    Since the first fence
    196 extends through the first gas permeable portion 192, sterilizing gas can enter the interior of the pouch 182. After sterilization, the second seal 198 is closed to prevent any additional gas, in particular oxygen, from entering the pouch 182. Storage bag 182 provides a flexible sterile secondary barrier, and can be constructed of various materials or laminates that have at least one gas-impermeable layer, with a polyethylene/laminate fiber laminate being preferred. An inner layer of foil material, as available from Amcor, may feature a Low Density Polyethylene (LDPE) laminate to facilitate sealing under pressure and temperature. A pouch tear notch 182 can be provided to facilitate opening. With the second seal 198 closed, the foil pouch 182 provides a moisture and oxygen barrier after ETO sterilization. Figure 15 illustrates the expandable prosthetic heart valve 140 and delivery system 142 mounted on an exemplary primary storage container in the form of a tray 200 and a sheet-like gas-tight lid 202. Tray 200 features cavities for valve 140 and delivery system 142 that retain and stabilize components therein. As per the embodiment of Figure 10, the cap 202 adheres to an upper rim 204 of the tray 200. Figure 16 is a perspective view of the prosthetic heart valve and tray delivery system as in Figure 15 placed in a secondary storage container in the form of a pouch
    206. Desirably, the secondary bag 206 includes a dual seal system at its open end, as described, that provides both a gas permeable portion and a gas impermeable portion, depending on which seal is closed. Figures 17A to 17D and 18 illustrate a new hybrid prosthetic heart valve 210 and its delivery system 212. The heart valve 210 is called a hybrid valve because it has a non-expandable portion in addition to an expandable portion. More private-
    Heart valve 210 includes a non-expandable valve portion 214 coupled to an expandable stent 216. The commissures of the valve portion 214 are secured to a retainer 218, much like the combination of valve 20 and valve. retainer 40 shown in Figures 1 through 7. The expandable stent 216 facilitates a nearly sutureless or sutraless set of implant procedure by providing an anchor force against the annulus.
    This type of valve is particularly suitable for the aortic annulus.
    The illustrated delivery system 212 includes a handle 220 that has a distal end 222 that is secured to retainer 218. Handle 220 includes a through hole that receives an elongated catheter 224 that has a balloon 226 at a distal end thereof.
    Advancing the catheter 224 through the handle 220 allows the positioning of the balloon 226 on the expandable stent 216. Further details on such a hybrid prosthetic heart valve 210 and its delivery system 212 are provided in Patent Application No. US Serial 121821,628, filed June 23, 2010, the disclosure of which is expressly incorporated herein by reference.
    In addition, an alternative delivery system for such a hybrid prosthetic heart valve is disclosed in US Patent Application Serial No. 6,11381,931 [ECV-6368PRO], filed September 10, 2010, the disclosure of which is also expressly incorporated herein. document for reference.
    Figure 19 illustrates the hybrid prosthetic heart valve 210 and delivery system 212 mounted on an exemplary primary storage container in the form of a tray 230 and a gas-tight lid similar to sheet 232. Tray 230 has cavities for valve 210 and delivery system 212 which retain and stabilize components therein.
    As with previous embodiments, the cap 232 adheres to an upper rim 234 of the tray 230. Figure 20 is a perspective view of the hybrid prosthetic heart valve and tray delivery system as in Figure 19 placed in a container of secondary storage in the form of a pouch 236. Desirably, the secondary pouch 236 includes a double sealing system at its open end, as described, which provides both a gas-permeable portion and a gas-impermeable portion, depending on q( The seal is closed. 5 Figure 21 again illustrates the hybrid prosthetic heart valve 210 and delivery system 212 mounted on an exemplary primary storage container in the form of a tray 240 and a gas-tight lid similar to sheet 242. Tray 240 has cavities for valve 210 and delivery system 212 that retain and stabilize.
    . 10 lize the components in them.
    The lid 242 adheres to an upper rim 244 of the tray 240. Figure 22 illustrates the hybrid heart valve 210 and delivery system 212 in the tray as shown in Figure 21, and then placed in a secondary storage container in the form of a secondary or external 15 tray 250. The secondary storage tray 250 desirably mimics the shape of the primary storage tray 240 so that the latter can be easily nested in a cavity formed therein.
    The secondary storage tray 250 comprises a top surface that includes a peripheral flange 252. The outer storage tray 250 provides a rigid secondary sterile barrier that protects and conserves the internal sterile barrier formed by the inner storage tray 240 and its cover 242. As with primary storage trays, external storage tray 250 may be constructed of a gas-impermeable molded material such as polyethylene terephthalate (PETG) copolymer. Since the sealed inner tray 240 is placed on the outer storage tray 250, a gas permeable cover 254 is sealed against the flange 252 and allows sterilization gas (eg, ETO) to reach the spaces inside both trays. . 30 Subsequently, a gas-tight label 262 sized to cover the secondary storage tray 250 is shown.
    The label 262 is applied over the sterilized tray 250, and
    given on top of the cap 254. Once it is press-adhered or thermally sealed against the cap, the label 262 provides a complete barrier to gas transfer.
    Label 262 preferably includes a layer of foil laminated to a layer of a gas permeable material such as Tyvek from DuPont 1073B, or more preferably is a single single layer of foil.
    Label 262 may have information printed on it about the contents of the package, such as implant type, model, manufacturer, serial number, package date, etc.
    A layer of pressure sensitive adhesive is provided to be sealed.
    _ 10 from the top of the previously attached cover 254. Alternatively, the secondary storage tray 250 has a double flange (not shown) around its top edge.
    And the inner flange may first be sealed with a gas permeable cap coated with a thermally sealed and die-cut adhesive 15 (eg Tyvek), such as cap 254, after placing the inner sterile barrier packaging , allowing the sterilization with ETO of the entire package, and in particular of the space between the two sterile barriers.
    A gas impermeable tag such as the Blade 262 tag is then sealed to an outer flange. 20 The packaging solutions disclosed in this document facilitate access to prosthetic heart valves and their delivery systems at the time of implant.
    The process for removing the hybrid heart valve 210 and delivery system 212 of Figures 17 through 18 from its packaging will be described, although similar steps can be used to remove the other heart valves and their delivery systems.
    The first step is the removal of the secondary or external sterile barrier, the two modalities of which have been described (bag or tray). This description will adopt a secondary storage tray 250. One or both of the sealed labels on the outer tray 250 are first separated, and the inner tray 240 sealed by the sterile lid 242 (Figure 21) is removed from it (alternatively, technician tear the bag 236 as in Figure 20). At this stage, the inner sterile packaging can be transported to the immediate vicinity of the operating site without undue concerns about the integrity of the packaging because of the relatively rigid inner tray 240 and sterile seal 242. Subsequently, the technician separates the lid 242, exposing the 5 assembly seen in Figures 17 to 18. Delivery system 212 is then advanced over a pre-installation guidewire so that heart valve 210 is in position within the target annulus.
    Inflation fluid connected to a proximal luer fitting then flows to inflate expansion balloon 226 and valve stent 216. Retainer 218 is then separated from connection to heart valve 210, and delivery system 212 is removed.
    The packaging assemblies in this document provide several distinct advantages of dry prosthetic valves.
    Due to the presence of a sterile gas permeable barrier such as a Tyvek Header (breathable vent) the product can easily be sterilized with ETO and aerated to acceptable waste levels.
    After the proper aeration time, the outer container, or second barrier, can be sealed (eg, blade to blade) to prevent long-term oxidation of the dry tissue valve.
    Sterilization with ETO avoids traditional oven sterilization, therefore reducing the amount of energy expended in heating packaged product in an oven for multiple days.
    Similarly, eliminating the process of autoclaving the bottles and closing before packaging will reduce the energy consumption required in the sterilization process.
    As mentioned, the double sterile barrier allows for gas sterilization, as with ETO, but still provides an oxygen barrier to the product after sterilization.
    Consequently, the entire assembly can be reliably stored in oxygen-free conditions for extended periods of time, even years, yet the external sterile container can be removed at the time of use without exposing the contents of the internal sterile container to contaminants. .
    The double layer of packaging allows for a sterile transfer from the inner packaging to the sterile field of operation, and the inner packaging can even be temporarily stored for significant periods before the product is used. The new packaging design will be lighter in weight due to choice of materials (PETG/Tyvek and air vs. Polypropylene with glutaraldehyde), which will reduce 5 shipping costs for single unit shipments. In fact, the biggest advantage over existing "wet" heart valve packaging designs is the elimination of storage and handling of liquid glutaraldehyde during the packaging and storage process, as well as the absence of glutaraldehyde at the time of use. This reduces health hazards for employees, customers and patients, as well as the environment. Additionally, disposal of glutaraldehyde is biologically hazardous and therefore OSHA requires either neutralizing the chemical prior to disposal or placing appropriate controls for disposal. Due to the critical storage and reduced handling requirements described in this document, the packaging process becomes less complex. Glutaraldehyde elimination will not require an increased level of insulation at higher temperatures as the dry tissue valve is already capable of withstanding temperatures as high as 55 °C.
    Therefore, this will likely reduce project volume by reducing the size and insulation used for valve shipment during summers and winters. Current tissue valves available from Edwards Lifesciences are packaged in a 108 g (3.8 oz) polypropylene bottle cap system with liquid glutaraldehyde. The presence of liquid glutaraldehyde requires that the design of the packaging design maintain a temperature state that will overheat or freeze the tissue valve. Therefore, current packaging is bulky and heavier due to the presence of EPS (Expanded Polystyrene) foam end caps on the outside of the secondary packaging (shelf box) which insulates it from extreme temperature conditions. The 108 g (3.8 oz) polypropylene closure/bottle system with liquid glutaraldehyde, secondary packaging and foam insulation make the packaging design bulky and lightweight.
    resulting in increased storage space and increased shipping costs.
    The current single unit summer package weighs approximately 385 g (0.85 lbs) while the current single unit winter package weighs approximately 839 g (1.85 lbs). The packages disclosed in this document are significantly lighter.
    Although the invention has been described in its preferred embodiments, it should be understood that the words used are words of description and not limitation. Therefore, changes may be made to the appended claims without departing from the true scope. of the invention.
    权利要求:
    Claims (27)
    [1]
    1. System for packaging a dry tissue heart valve and its delivery system: a dry tissue heart valve coupled to its valve delivery system; a primary container sized to receive the dry tissue cardboard valve coupled to its delivery system, the primary container having a gas permeable seal; and a secondary container sized to receive the primary container, the secondary container being made of a gas-impermeable material and having a double seal that includes a gas-permeable seal and a gas-impermeable seal.
    [2]
    The system of claim 1, wherein the primary container comprises a flexible pouch.
    [3]
    The system of claim 2, wherein the secondary container comprises a flexible pouch.
    [4]
    The system of claim 1, wherein the primary container comprises a relatively rigid tray.
    [5]
    The system of claim 4, wherein the secondary container comprises a relatively rigid tray.
    [6]
    The system of claim 4, wherein the secondary container comprises a flexible pouch.
    [7]
    The system of claim 1, wherein the delivery system includes a retractable handle.
    [8]
    The system of claim 7, wherein the retractable handle includes telescopic sections.
    [9]
    The system of claim 8, wherein the telescopic sections include open gas flow openings to the inner lumens.
    [10]
    10. System for manipulating a heart valve: a prosthetic heart valve; a heart valve delivery system that has a handle.
    retractable lo with a series of concentric telescopic sections, the handle having a retracted state and an elongated state, and a distal telescopic handle section having a locking head that protrudes in a distal direction; and 5 a valve retainer releasably attached to the prosthetic heart valve, the retainer including a handle coupler extending in a proximal direction and having a structure sized and shaped to correspond with the handle locking head so that the prosthetic heart valve extends distally from the distal telescopic section of the handle.
    [11]
    11. System according to claim 10, wherein the telescopic sections are generally tubular and gradually increase in diameter from the distal telescopic section to a proximal telescopic section.
    [12]
    The system of claim 10, wherein the telescoping sections include interference tabs which prevent any section from passing completely within another section and which prevent the sections from disengaging after the elongated state.
    [13]
    The system of claim 10, further including elastomeric seals provided between adjacent telescopic sections to provide friction tightness between the telescopic sections.
    [14]
    The system of claim 10, wherein the locking head is elastomeric and the structure in the handle coupler sized and shaped to correspond with the locking head comprises an internal cavity in which the locking head elastomeric fits closely. '
    [15]
    The system of claim 10, wherein all but a proximal telescopic section include outwardly directed sealing sections at proximal ends thereof, and all but the distal telescopic section include an inwardly directed flap at the ex. - distal tremors of the same and a circular feature directed to den-
    The closely spaced portion of the distal ends thereof, wherein converting the handle to the elongated state locks each sealing section in a region between the inwardly directed tab and the inwardly directed circular feature of the adjacent telescoping section. 5
    [16]
    The system of claim 10, wherein the prosthetic heart valve is a dry tissue valve.
    [17]
    System according to claim 10, further including storage containers for the prosthetic heart valve, heart valve delivery system and valve retainer comprising: - a sized primary container to receive the heart valve coupled to its retainer and the delivery system with the handle in its retracted state, the primary container having a gas permeable seal; and a secondary container sized to receive the primary container, the secondary container being made of a gas-impermeable material and having a double seal including a gas-permeable seal and a gas-impermeable seal.
    [18]
    18. Method for manipulating a heart valve: 20 Acquire a sterile housing that contains a removable prosthetic heart valve attached to a valve retainer, the retainer being coupled to a heart valve delivery system that has a retractable handle with a series of concentric telescopic sections, the handle having a retracted state with a first length and an elongated state with a second length relatively greater than the first length and the handle being contained in the sterilized packaging in its retracted state ; remove the valve, retainer and handle from the sterile packaging; and 30 converting the handle from its retracted state to its extended state, which includes pulling telescopic sections to elongate the handle until adjacent telescopic sections are locked together.
    [19]
    19. The method of claim 18, wherein the telescopic sections are generally tubular and gradually increase in diameter from a distal telescopic section to a proximal telescopic section, and wherein the proximal telescopic section has an ergonomic handle 5 with dimples to receive a user's fingers.
    [20]
    The method of claim 18, wherein the telescopic sections include interference tabs which prevent any section from passing completely within another section and which prevent the sections from disengaging after the elongated state.
    [21]
    The method of claim 18, further including elastomeric seals provided between adjacent telescopic sections to provide frictional grip between the telescopic sections.
    [22]
    22. The method of claim 18, wherein all but one proximal telescopic section include outwardly directed sealing sections at the proximal ends thereof, and all but one distal telescopic section include an inwardly directed tab at the distal ends. therefrom and an inwardly directed circular feature closely spaced from the distal ends thereof, wherein converting the handle to the elongated state locks each sealing section in a region between the inwardly directed tab and the outwardly directed circular feature inside the adjacent telescopic section.
    [23]
    23. The method of claim 18, wherein a distal telescopic section of the handle has a locking head that protrudes in a distal direction and the valve retainer includes a handle coupler that extends in a proximal direction. and that it has a structure sized and shaped to correspond with the locking head of the handle so that the prosthetic heart valve extends distally from the distal telescopic section of the handle, and wherein the locking head is elastomeric and the frame on the handle coupler sized and shaped to match the lock head comprises an internal cavity into which the elastomeric lock head fits closely.
    [24]
    The method of claim 18, wherein the prosthetic heart valve is a dry tissue valve and the sterile packaging does not contain any liquid preservative.
    [25]
    The method of claim 24, wherein the sterilized container includes a primary container and a secondary container, the primary container having a gas permeable seal and providing gas flow passages therein. around the heart valve, with the sealed primary container being placed within the secondary container, the secondary container including a double seal with a gas-permeable seal within a gas-impermeable seal that can prevent the oxygen or water is passed through, the method additionally including: removing the gas-tight seal from the secondary container and subjecting the sterilized container to gas-based sterilization; removing the gas permeable seal from the secondary container; remove the gas permeable seal from the primary container; and perform the step of removing the valve, retainer, and handle from the sterilized package.
    [26]
    The method of claim 25, wherein the primary container is a tray having an upper surface and a cavity surrounded by an upper rim and descending downwardly therefrom, the tray it is made of a gas-tight material, in which the dry tissue heart valve and its delivery system are placed in the tray cavity.
    [27]
    The method of claim 25, wherein the secondary container comprises a flexible pouch.
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    类似技术:
    公开号 | 公开日 | 专利标题
    BR112013015257A2|2021-04-20|prosthetic heart valve packaging and delivery systems
    US10561486B2|2020-02-18|Dry prosthetic heart valve packaging system
    CN109452991B|2021-11-05|Pre-assembled bioprosthetic valve and sealing catheter
    US8869982B2|2014-10-28|Prosthetic heart valve packaging and deployment system
    EP3544548B1|2020-12-16|Tissue heart valve | humidor packaging system
    CA2373615C|2006-10-24|Sterilization container
    AU774131B2|2004-06-17|Sterilization container
    同族专利:
    公开号 | 公开日
    CN103370035B|2017-07-14|
    US20170073099A1|2017-03-16|
    JP2014508552A|2014-04-10|
    US11027870B2|2021-06-08|
    JP6338606B2|2018-06-06|
    SG191185A1|2013-07-31|
    MX371059B|2020-01-15|
    EP2651338A2|2013-10-23|
    US9498317B2|2016-11-22|
    JP2016120307A|2016-07-07|
    US20120158128A1|2012-06-21|
    MX2019009784A|2019-10-02|
    CA2821423C|2017-10-24|
    CN103370035A|2013-10-23|
    CA2821423A1|2012-06-21|
    WO2012082986A3|2012-08-16|
    MX2013006839A|2013-08-26|
    JP5988997B2|2016-09-07|
    WO2012082986A2|2012-06-21|
    EP2651338A4|2015-07-15|
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    法律状态:
    2021-05-04| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2021-05-04| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2022-01-11| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    优先权:
    申请号 | 申请日 | 专利标题
    US42378510P| true| 2010-12-16|2010-12-16|
    US61/423,785|2010-12-16|
    US13/324,124|US9498317B2|2010-12-16|2011-12-13|Prosthetic heart valve delivery systems and packaging|
    US13/324,124|2011-12-13|
    PCT/US2011/065073|WO2012082986A2|2010-12-16|2011-12-15|Prosthetic heart valve delivery systems and packaging|
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