• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    "telescopic device". a telescopic device comprising a first telescopic element and a second telescopic element, in which the second telescopic element is arranged and can be moved within the first telescopic element so that the second telescopic element can be moved in a first and a second axial direction along the longitudinal axis of the first telescopic element, a coupling arrangement to limit the displacement of the second telescopic element with respect to the first telescopic element in which the coupling arrangement has a first and a second coupling configuration.
    公开号:BR112012012028B1
    申请号:R112012012028
    申请日:2010-11-25
    公开日:2020-01-21
    发明作者:Olav Schertiger Lars
    申请人:Coloplast As；
    IPC主号:
    专利说明:

    “TELESCOPIC DEVICE”
    FIELD OF THE INVENTION [0001] The present invention relates to a telescopic device and a coupling arrangement for a telescopic device. In particular, the invention relates to a telescopic catheter and more particularly to an intermittent telescopic urinary catheter or an intermittent telescopic urinary catheter package.
    BACKGROUND OF THE INVENTION [0002] Urinary catheters are used as an auxiliary tool in the drainage of the urinary bladder of people with reduced or nonexistent bladder control. Reduced or non-existent bladder control can be temporary or permanent, where a temporary loss of bladder control can be caused, for example, by trauma, loss of consciousness or illness. An example of a permanent loss of bladder control may be when there is a loss of a neural connection between the brain or spinal cord and the urinary bladder due to trauma to the spinal cord, as is often the case with paraplegics and / or quadriplegics .
    [0003] An example of a urinary catheter that is widely used to drain urine from the urinary bladder is when a catheter tube is inserted into a user's urethra and the tip of the catheter tube is maneuvered into the urinary bladder by forcing the opening of the urethral sphincter and thus providing a drainage channel from the urinary bladder and out of the body through the catheter tube. There are two types of catheters that are commonly used: the permanent catheter and the intermittent catheter. The permanent catheter is a highly flexible catheter, which is inserted into the body by medical professionals and remains for a long period of time at a time, and the catheter is anchored inside the bladder. The intermittent catheter is usually a single-use catheter or a multiple-use catheter, which is inserted into the urethra / bladder by the user for immediate drainage of its
    Petition 870190104897, of 10/17/2019, p. 6/33 / 23 urinary bladder and is removed from the urethra / bladder after drainage. The following disclosure will mainly be focused on the intermittent urinary catheter.
    [0004] There are several different types of intermittent catheters that are currently available to the user, such as SpeediCath ™ and EasiCath ™, marketed by Coloplast A / S which are conventional one-piece catheter tubes that have an outlet at the distal end that can be used to connect the catheter to a urine collection bag to collect urine drained from the urinary bladder.
    [0005] Another type of catheter is disclosed in WO 03/002179, which is a telescopic catheter in which one of the telescopic elements is the packaging of the catheter and another telescopic element is the catheter element that extends telescoping from the catheter packaging. The telescopic catheter is collected during storage and transport and extended for insertion into the urethra, providing female users with a compact and discreet catheter that can be used anywhere and without any significant preparation time.
    [0006] Another type of catheter is disclosed in WO 2008/138351, which discloses a telescopic device that has a first tubular element and an extension element that has a coupling element that limits the displacement of the extension element inside the first tubular element, wherein the coupling element engages the interior of the first tubular element. This device is an intermittent telescopic catheter, which is also adapted for use by a male user, where the first tubular element and the extension element are adapted in such a way that both telescopic elements are adapted to be inserted into the user's urethra.
    [0007] Telescopic catheters known in the art, as discussed above, are locked in their extended state, so that the
    Petition 870190104897, of 10/17/2019, p. 7/33 / 23 extension or telescopic element is prevented from retracting to its compacted state. This means that after use, it is difficult to discard the catheter discreetly, for example, leaving it in a trash can or returning it to a storage area, such as a bag or pocket.
    [0008] Thus, there is a need for a telescopic device that can be extended from a retracted state to an extended state and, optionally, can subsequently be retracted to a retracted state.
    SUMMARY OF THE INVENTION [0009] According to the invention there is provided a telescopic device comprising a first telescopic element and a second telescopic element, in which the second telescopic element is arranged and can be moved within the first telescopic element so that the second telescopic element can be moved in a first and a second axial direction along the longitudinal axis of the first telescopic element, a coupling arrangement to limit the displacement of the second telescopic element with respect to the first telescopic element in which the coupling arrangement has a first and a second coupling configuration, in which the first coupling configuration limits the displacement in the first axial direction allowing displacement in the second opposite axial direction, and the second coupling configuration limits the displacement in the second axial displacement direction allowing displacement o in the first opposite axial direction, where the coupling arrangement is adapted to convert from the first coupling configuration to the second coupling configuration, and vice versa, by applying force above a predetermined level to the second telescopic element in the axial direction, whose displacement is limited in the first or second coupling configuration.
    [00010] This means that the first and second elements
    Petition 870190104897, of 10/17/2019, p. 8/33 / 23 telescopes can be maneuvered in relation to each other in one direction, at any time, as long as the telescopic device is not fully extended, and where the coupling arrangement prevents the first and second telescopic elements from being maneuvered in the opposite direction. As an example, if the coupling arrangement allows the second telescopic element to be pulled or pushed in a direction out of the first telescopic element, the coupling arrangement prevents any movement of the second telescopic element in the opposite direction, that is, to be pushed inward. of the first telescopic element. Thus, in the case where the telescopic device is a urinary catheter, this arrangement allows the telescopic device to be disposed in an extended state, for insertion of the catheter into the urinary channel, and during insertion the telescopic urinary catheter will be kept in its extended state without being retracted or reduced in length.
    [00011] In addition, after use, the user can apply a force above a predetermined level to the second telescopic element, and thus convert the coupling arrangement into a second coupling configuration, where the telescopic urinary catheter can be retracted for discreet disposal or discreet storage, where the urinary catheter is prevented from extending to a length that is greater than the retracted length. This means that, after its disposal or storage after use, the risk that the catheter will extend from its retracted state is considerably reduced.
    [00012] However, if the user wishes to extend the catheter from its retracted state to its extended state, the user can apply a force above a predetermined level to the second telescopic element, and the coupling arrangement will convert from its second coupling configuration in its first coupling configuration, allowing the second telescopic element to be extended from the first element
    Petition 870190104897, of 10/17/2019, p. 9/33 / 23 telescopic, as discussed earlier. This can be advantageous if the telescopic urinary catheter is of a type that can be reused. In this way, the catheter can be extended for catheterization and retrieved for storage more than once.
    [00013] Another advantage of the present disclosure is obtained during the insertion of a catheter in the human or animal urethra. In the event of a blockage or constriction in the urethra during insertion or if the urinary sphincter of the urinary bladder is, for some unusually tight reason, the present provision minimizes the risk of the catheter causing trauma to the urethra or urinary sphincter. The reason for this is that the second telescopic element can be prevented from maneuvering inside the urethra or into the urinary bladder and the force applied to insert the urinary catheter would be transferred to the second telescopic element by blocking or constricting, and if the force of insertion exceeds the predetermined level the coupling arrangement can convert from the first coupling configuration to the second coupling configuration. This conversion affects the telescopic urinary catheter in such a way that the telescopic urinary catheter can be prevented from being further maneuvered into the urethra or urinary bladder and, thus, the user would not risk damaging or traumatizing the urethra, the sphincter urinary tract or urinary bladder by the force that would then be necessary to insert the catheter into the urinary bladder. Thus, the coupling arrangement provides a means to reduce the risk of damaging or traumatizing the urethra, urinary sphincter or urinary bladder in the event of blockages or constrictions during insertion.
    [00014] In an embodiment of the present invention, the application of force to the second telescopic element can be provided by pushing the second telescopic element towards the first telescopic element. The application of force to the second telescopic element can be transmitted to the coupling arrangement, while the coupling arrangement is
    Petition 870190104897, of 10/17/2019, p. 10/33 / 23 preventing the second telescopic element from moving in one direction in or out of the first telescopic element. In this way, the transmitted force applied to the coupling arrangement by applying impulse force to the second telescopic element can cause the coupling arrangement to convert from the first coupling configuration to the second coupling configuration, or vice versa. The thrust force can be applied by applying force to the free end of the second telescopic element, or by applying pressure to the outer surface of the second telescopic element and applying force in the desired direction. According to the teachings of the present disclosure, alternative methods of applying force to the second telescopic element may be obvious to the person skilled in the art.
    [00015] In an embodiment of the present invention, the application of force to the second telescopic element can be provided by pulling the second telescopic element in a direction out of the first telescopic element. The application of force to the second telescopic element can be transmitted to the coupling arrangement, while the coupling arrangement is preventing the second telescopic element from being displaced in one direction in or out of the first telescopic element. In this way, the transmitted force applied to the coupling arrangement through the application of pulling force to the second telescopic element can cause the coupling arrangement to convert from the first coupling configuration to the second coupling configuration, or vice versa. The user can apply a pulling force to the second telescopic element by applying pressure to the outer surface of the second telescopic element, for example, using the fingers of the hand directly or indirectly using an applicator for non-contact application, and pulling the second element telescopic in a direction out of the first telescopic element, or by applying tractive force to the
    Petition 870190104897, of 10/17/2019, p. 11/33 / 23 opposite direction, towards the first telescopic element.
    [00016] An applicator for non-contact application can be placed on the outer surface of the first and / or the second telescopic element allowing the user to apply pressure on the outer surface of the telescopic device in order to maneuver the second telescopic element in relation to the first telescopic element without contaminating the outer surface of the first and / or the second telescopic element. Contamination of the outer surface of a telescopic device, such as a urinary catheter, can increase the risk of the user attracting a urinary tract infection, which is a common disease for users of intermittent urinary catheters. Another advantage of using an applicator for non-contact application may be that it prevents the user from getting his fingers dirty when maneuvering or touching a urinary catheter provided with a wet hydrophilic surface coating or provided with a lubricating gel on the external surface of the catheter.
    [00017] In an embodiment of the present invention, the predetermined level of force can be in the range 1 to 30 N. The force requirements for converting the coupling arrangement from the first coupling configuration to the second configuration may vary, depending on which use the telescopic device is adapted to. Thus, if the programmers of a telescopic device according to this disclosure adapt the use of the telescopic device to be inserted into a very fragile passage, the device can be adapted to be converted without a significant amount of force, such as 1 N in order to prevent the device from causing damage to the passage. In another example, where the telescopic device is adapted to be sturdy and has to be used to push an object to move or move the object, the force can be increased to about 30 N, allowing a significant amount of force to be applied before the coupling arrangement is converted. Based on this disclosure,
    Petition 870190104897, of 10/17/2019, p. 12/33 / 23 it would be obvious to the person skilled in the art to choose a force level that can be greater than 30 N, such as 60 N or 100 N, if the application of the telescopic device requires such force.
    [00018] In one embodiment of the present invention, the predetermined level of force can be in the range of 3 to 20 N. The lower limit of this range, 3 N, can be used when the telescopic device is a urinary or medical catheter that has a very small diameter. An example of such a telescopic device may be a urinary catheter adapted for use in infants, where the urethra and urinary sphincter are small in diameter and where it is important to avoid any damage to the infant's body tissue. An example of a medical catheter that has a relatively small diameter may be an arterial or venous catheter, where it is important that the force applied to the catheter is not so high that the catheter can inadvertently pass through an arterial or venous wall. The upper limit in the range, 20 N, can, for example, be used for a human or animal urinary catheter where the diameter of the catheter is of a large size, such as a urinary catheter for a horse, and where the canal walls urinary are strong enough to withstand such a high force.
    [00019] In another embodiment of the present invention, the predetermined level of force can be in the range of 5 to 15 N. The lower limit of this range can be used when the telescopic device is a urinary catheter that has a small diameter, such as a urinary catheter adapted for use in children. The upper limit of this range can be used when the telescopic device is adapted for use as an adult urinary catheter. The same considerations mentioned in the previous paragraphs apply to this range.
    [00020] In another embodiment of the present invention, the predetermined level of force can be in the range of 6 to 12 N. The lower limit of this range can be used when the telescopic device is a catheter
    Petition 870190104897, of 10/17/2019, p. 13/33 / 23 urinary catheter that has a medium diameter, such as a urinary catheter adapted for use in adolescents. The upper limit of this range can be used when the telescopic device is adapted for use as an adult urinary catheter. The same considerations mentioned in the previous paragraphs apply to this range.
    [00021] In another embodiment of the present invention, the predetermined level of strength can be in the range of 8 to 10 N. This range can be defined as the ideal range for the maximum level of strength required to insert a conventional urinary catheter into a human being. normal adult human. If the force required to insert the urinary catheter exceeds 10 N, there is a greater risk that the urinary catheter may damage the urinary canal or urinary sphincter, since the biological tissue in the urinary system is vulnerable. In this mode, if the level of force applied to the telescopic device exceeds about 10 N, the coupling arrangement can be converted, and the user may not be able to insert the urinary catheter further up into the urinary channel and the risk of damage biological tissue is significantly reduced. However, in the event that the force level is set at a level that is less than approximately 8 N, a user of a normally qualified urinary catheter may have trouble inserting the catheter without causing the coupling arrangement to be converted. However, as mentioned earlier, specific circumstances may require the force level to be higher or lower, depending on the future development of lubricants or low-friction surfaces of urinary catheters, the development of the shape and size of the catheter, etc. Based on the teachings of the present disclosure, it is obvious to the person skilled in the art that improvements and modifications in the design of a urinary catheter can lead to a predetermined level of strength in a range other than the ideal range.
    [00022] Another factor that can influence the choice of intervals for the
    Petition 870190104897, of 10/17/2019, p. 14/33 / 23 predetermined strength can be a factor such as the user's manual dexterity and possibly the level of paralysis in paraplegic or quadriplegic users.
    [00023] In an embodiment of the present invention, the coupling arrangement can be adapted to be converted by maneuvering the second telescopic element in relation to the first telescopic element in a direction that is opposite to the direction that allows displacement in the first or second coupling configuration . In a situation where the coupling arrangement prevents the telescopic device from being retracted, the second telescopic element can be maneuvered in such a way that the user tries to retract the catheter. This causes the coupling arrangement to be converted, and the telescopic device can be prevented from being extended. Similarly, if the telescopic device is arranged in such a way that it is prevented from being extended, the second telescopic element can be maneuvered in such a way that the user tries to extend the catheter, causing the coupling arrangement to be converted and the device telescopic is back in a situation where the device is prevented from being retracted.
    [00024] In an embodiment of the present invention, the coupling arrangement can comprise a coupling element that has a proximal end and a distal end and a coupling ring that surrounds an outer surface of the coupling element, wherein the outer surface of the coupling element. coupling element can be provided with a central part having a first outer diameter, a first tapered surface proximal to the first central area ending in a second outer diameter that is smaller than the first outer diameter and a second distal tapered surface in relation to the central area that ends in a third outer diameter that is smaller than the first outer diameter. The coupling ring can be adapted to be maneuverable along a longitudinal axis of the coupling element, in order to
    Petition 870190104897, of 10/17/2019, p. 15/33 / 23 so that it can be moved from the proximal end of the coupling element to the opposite proximal end, and vice versa. The coupling ring can be a flexible ring made of a resilient elastic or non-elastic material that has a memory material, so that when no force or tension is applied to the coupling ring it has a natural diameter, but when a force or tension is applied to it, it is able to expand to a larger diameter.
    [00025] Thus, when the ring is maneuvered from the distal end of the coupling element to the central area of the coupling element, the diameter of the ring increases during the ascent of the distal conical surface to the central part, and, when the ring is moved from the central area to the proximal end, the diameter of the ring decreases as the proximal conical surface descends to the central area. The ring can also be operated in the opposite direction, where the diameter of the coupling ring expands and contracts in the same way.
    [00026] In an embodiment of the present invention, the coupling element can be connected to a distal end of the second telescopic element.
    [00027] In an embodiment of the present invention, the coupling ring can engage an internal surface of the first telescopic element.
    [00028] In the case where the coupling element is within the first telescopic element, which has an inner diameter that is equal to or greater than the first outer diameter of the central zone of the coupling element, the coupling ring can engage the surface inner of the first telescopic element, and the inner surface of the first telescopic element can prevent the coupling ring from being maneuvered towards the central area, thus preventing movement of the coupling element in a longitudinal direction. However, in the case of the coupling element, the
    Petition 870190104897, of 10/17/2019, p. 16/33 / 23 coupling ring or the inner surface of the first telescopic element is provided as a compressible and / or extensible resilient material, or a combination of resilience between items, an increase in strength or tension to the coupling element may allow the coupling element rises to the central area and to the opposite tapered surface area, thereby being converted from one coupling configuration to another. The increase in force or tension can be provided as a force applied to the second coupling element.
    [00029] In an embodiment of the present invention, the coupling ring may have an outer surface provided with a radial protrusion. The radial projection on the outer surface of the coupling ring can increase the friction between the inner surface of the first telescopic element and the coupling ring, if for example the inner surface of the first telescopic element is made of a resilient material, and during expansion of the coupling ring, the protrusion can deepen into the inner surface of the first telescopic element.
    [00030] In a telescopic device embodiment according to the present invention, the coupling arrangement can be adapted to allow the conversion of the coupling arrangement from the first coupling configuration to the second coupling configuration, but to prevent the arrangement coupling is converted back to the first coupling configuration. This can be advantageous in a situation where the telescopic device is a single-use intermittent urinary catheter and a user has failed in his attempt to insert the urinary catheter into the urinary channel, and the telescopic device's coupling arrangement is converted from a configuration coupling to the other. Thus, in order to prevent reuse of the catheter, which can cause an infection of the urinary tract, due to contamination on the surface of the urinary catheter, the user may only be allowed to collect the catheter, and conversion to the
    Petition 870190104897, of 10/17/2019, p. 17/33 / 23 another coupling configuration is avoided. Thus, the user may not be able to use the catheter a second time, thereby minimizing the risk of a urinary tract infection. In an embodiment of the present invention, this can be achieved by providing the proximal tapered surface with a stop means to prevent the coupling ring from maneuvering from the proximal tapered surface to the central area. The stopping means can be in the form of a ledge or a protrusion that the coupling ring cannot exceed.
    [00031] In one embodiment of the present invention, the telescopic device can be a urinary catheter.
    [00032] In an embodiment of the present invention, the surface of the first and / or the second telescopic element can be coated with a hydrophilic coating to provide a low friction surface. The telescopic device can be arranged in such a way that the first telescopic element comprises a package for placing the second telescopic element, and the second telescopic element can be provided with a hydrophilic coating, whereas the first telescopic element is not coated, so that the telescopic device can be operated while holding the first telescopic element. In the case where the first telescopic element and the second telescopic element are both adapted to enter the urinary channel, both telescopic elements can be provided with a hydrophilic coating.
    [00033] In one embodiment of the present invention, the first and second telescopic elements may not be coated.
    [00034] In an embodiment of the present invention, the telescopic device can be packaged for storage and / or transportation with a liquid expansion medium to wet the hydrophilic coating and to maintain the hydrophilic coating in a fully hydrated state during storage and / or transport. By the provision of a liquid expansion medium that maintains the hydrophilic coating in a
    Petition 870190104897, of 10/17/2019, p. 18/33 / 23 completely hydrated during storage and / or transportation, the user can be provided with a ready-to-use catheter that can be used immediately after removing the telescopic device from the packaging. In addition, the user does not need to bring any accessories, such as lubricating gel or an external source of liquid expansion medium for preparing the catheter.
    [00035] In an embodiment of the present invention, the second telescopic element can be a catheter tube that has a wall that defines an internal lumen, where the wall is provided with drainage holes and a proximal end that has an insertable tip, which closes the inner lumen of the catheter tube. The telescopic device can therefore be used as a urinary catheter, in which the second telescopic element is adapted to be inserted into the urinary canal and where the insertable tip is adapted to penetrate the urinary sphincter, so that the catheter tube can be inserted into the urinary bladder. The drainage holes provide a liquid communication channel between the outer surface of the catheter tube and the inner lumen of the catheter tube, allowing urine to enter the drainage holes and thus drain urine through the inner lumen of the catheter tube. catheter. The first telescopic element can also be provided with an internal lumen, so that the first telescopic element can function as an extension of the catheter tube in the form of a drain hose and / or function as a second insertable catheter tube which can also be inserted into the urinary canal, as an insertable extension for the second telescopic element.
    [00036] In an embodiment of the present invention, the length of the first telescopic element can be equal to or greater than the length of the second telescopic element. This means that the first telescopic element can completely enclose the second telescopic element, and the first telescopic element can function as a packaging of
    Petition 870190104897, of 10/17/2019, p. 19/33 / 23 catheter protecting the second telescopic element against contamination of the environment during transport or storage. In addition, the first telescopic element may also include additional elements that may be required for the urinary catheter to be in a ready-to-use condition, such as a liquid expansion medium that provides hydration for a hydrophilic surface coating, a lubricating gel for lubrication of the catheter surface, an applicator for non-contact application to allow the user to handle the catheter insert without contaminating the insert, etc.
    [00037] In one embodiment of the present invention, the first telescopic element may be a tubular element that may have walls of material impermeable to gases. If the first telescopic element functions as a package for the second telescopic element, and a liquid expansion medium is provided inside the package, it may be advantageous for the package to be made of a gas-impermeable material, so that any diffusion of the medium of liquid expansion can be reduced or avoided and the catheter can be kept in a wet condition for a significant period of time. A significant period of time can be, for example, the service life of the telescopic device, which can be a period of about 6 months to approximately 5 years.
    [00038] In an embodiment of the present invention, the telescopic device can be provided in a collapsed configuration for storage or transportation, in which the first telescopic element encloses the second elongated element and the free ends of the first telescopic element are closed by an impermeable closure. to gases. This means that the first telescopic element can constitute the package for the second telescopic element, and thus the package as a whole can be seen as impermeable to gases, so that any diffusion of the liquid expansion medium is prevented during the
    Petition 870190104897, of 10/17/2019, p. 20/33 / 23 storage or transportation.
    [00039] In one embodiment of the present invention, the first telescopic element can be a corrugated tubular element where the side wall can comprise alternating ridges and ridges. Alternating ridges and ridges can increase the flexibility of the side wall of the corrugated tubular element compared to a tubular element that has no alternating ridges and ridges. In order to provide the first telescopic element with a wall of flexible material, it can be provided as a side wall having alternating ridges and grooves in a radial direction of the central longitudinal axis of the first telescopic element. This means that the thickness of the material can be increased in order to provide a side wall that is more impermeable to gases, without having to significantly compromise the flexibility of the first telescopic element.
    [00040] In an embodiment of the present invention, the first telescopic element can define a cable that allows the manipulation of the second telescopic element. This means that the first telescopic element is made of a material that is sufficiently rigid to allow the material to be gripped during the insertion, use, removal and manipulation of the telescopic device, without deforming the material to such an extent that the first telescopic element becomes difficult to grasp and / or to prevent the walls of the first telescopic element from collapsing and prevent fluid communication through an internal lumen of the first telescopic element under the application of gripping pressure to the side walls of the first telescopic element.
    BRIEF DESCRIPTION OF THE DRAWINGS [00041] The invention will be explained in more detail below, describing in an example and making reference to the additional advantages of the invention with reference to the drawing, in which
    Petition 870190104897, of 10/17/2019, p. 21/33 / 23 [00042] Fig. 1 illustrates an exploded side view of a telescopic device according to the present invention, [00043] Fig. 2 illustrates an exploded perspective view of the same, [00044] Fig. 3 illustrates a side view of a coupling element for use in a telescopic device according to the present invention, [00045] Figs. 4a-c illustrate a side sectional view of a coupling element in a first coupling configuration, a second coupling configuration and a second coupling configuration according to the embodiment of the present invention, respectively.
    [00046] Fig. 5a illustrates a side sectional view of a telescopic device according to the present invention, where the coupling arrangement is in a first coupling configuration during extension, [00047] Fig. 5b illustrates a side sectional view, where the coupling arrangement prevents the telescopic device from being retracted, [00048] Fig. 5c illustrates a side sectional view, in which the coupling arrangement converts from a first coupling configuration for a second coupling configuration, and [00049] Fig. 6 illustrates a side sectional view of a telescopic device according to the present invention, where the first telescopic element is a corrugated tubular element.
    DETAILED DESCRIPTION OF THE DRAWINGS [00050] Fig. 1 and Fig. 2 illustrate a telescopic device 1, in accordance with the present invention, wherein the telescopic device 1 is a urinary catheter kit. The urinary catheter kit 1 comprises a first telescopic element 2, which can be a corrugated tubular element with an internal lumen 3 and which has walls of gas-impermeable material. At
    Petition 870190104897, of 10/17/2019, p. 22/33 / 23 side walls of the first telescopic element can be made of a material that is flexible or rigid, and the flexibility of the side walls can be changed or altered by varying the design of the alternating ridges and ridges of the corrugated material. The second section of catheter 4 is a catheter tube that has an internal lumen 5 along the longitudinal axis of the catheter tube 4, as is well known in the art. The catheter tube 4 is provided with an insertable catheter tip 6 which closes the inner lumen 5 of the catheter tube at the proximal end of the catheter tube 4. In order to provide liquid communication from the outer surface of the catheter tube 4 to the inside from the inner lumen 5, the catheter tube 4 is provided with at least one drainage hole 7, which is a through opening in the side wall of the catheter tube 4.
    [00051] The first telescopic element 2 and the second telescopic element 4 can be mounted in a telescopic configuration, where the second telescopic element 4 projects into the inner lumen 3 of the first telescopic element 2. A coupling element 8 is provided in a distal end of the second telescopic element 4 and can be permanently attached to the inner lumen 5 of the second telescopic element using a connector 9 that can be welded, glued, shrunk, etc. to the inner surface of the second telescopic element 4. The mounted coupling element 8 and the second telescopic element are inserted into the inner lumen 3 of the second telescopic element, where the outer surface of the coupling element has a maximum outer diameter that is equal to or less than the smallest inner diameter of the first telescopic element 2. The coupling element 8 has an internal lumen 10 that extends along the long axis tudinal of the coupling element 8. The lumen 10 provides liquid communication between the inner lumen 5 of the second telescopic element 4 and the inner lumen 3 of the first telescopic element 2. In order to fix or restrict the first
    Petition 870190104897, of 10/17/2019, p. 23/33 / 23 telescopic element 2 with respect to the second telescopic element 4 and the coupling means 8, a C-shaped coupling ring 11 is arranged to surround the outer surface of the coupling element 8, which is illustrated in more detail in Figs. 3 and 4.
    [00052] Fig. 3 is a side view of a coupling element 8, as shown in Figs. 1 and 2, wherein the coupling ring 11 is arranged to surround the outer surface of the coupling element 8. Coupling element 8 has a proximal end 12 and a distal end 13, where the proximal end 12 is provided with a connector 9 that connects to the second telescopic element (see Fig. 1). The coupling element 8 has a sealing element 14 that surrounds the entire outer surface of the coupling element 8, and can be of a flexible and / or resilient material, such as rubber, plastic, etc. The outer diameter of the sealing element 14 is approximately equal to the inner diameter of the first telescopic element (2 in Fig. 1), so that the sealing element prevents any liquid communication from passing through the coupling element 8 when it is placed in the inside the inner lumen of the first telescopic element.
    [00053] The coupling element 8 has a central cross-sectional area 15 which has a first outer diameter, and a first conical surface 16 which is proximal to the central cross-sectional area 15, which ends at a first surface area 17 which has a second outer diameter that is smaller than the first outer diameter of the central cross sectional area 15. The coupling element 8 is further provided with a second conical surface 18 which is distal to the central cross sectional area 15, which ends in a second area of surface 19 having a third outer diameter that is smaller than the first outer diameter of the central cross sectional area 15. The coupling ring 11 surrounds the outer surface of the coupling element 8 and can be moved
    Petition 870190104897, of 10/17/2019, p. 24/33 / 23 from the distal end 13 of the coupling element 8 towards the proximal end 12 of the coupling element 8. The cross-sectional area of the inner surface of the coupling ring 11 has a diameter that is equal to or greater than the diameter external of the first 17 or the second surface 19, in such a way that the coupling element is not restricted of movement along the surface area of the coupling element.
    [00054] Fig. 4a illustrates a side sectional view of the coupling element 8 which has a coupling ring 11 of a non-resilient material surrounding the second surface area 19. If the coupling ring 11 is pushed or pulled in the In direction A, the inner surface 20, as shown in Fig. 3, of the coupling ring 11 rests on the tapered distal surface 18, and increasing the diameter of the tapered surface 18 causes the coupling ring to expand and the diameter of the inner surface 20 expands causing the outer diameter of the coupling ring 11 to increase accordingly, in a configuration, as illustrated in Fig. 4b. In Fig. 4b the coupling ring 11 is disposed on the conical distal surface 18, close to the central area 15, where the inner and / or outer diameter 21b of the coupling ring in this position has increased from its starting position 21a. If the coupling ring 11 is further pushed or pulled in a proximal direction, the coupling ring 11 will expand and overtake the central area 15 and descend through the conical proximal surface 16 to the first surface area 17, where the coupling ring returned to its original unexpanded diameter.
    [00055] Fig. 4c illustrates an alternative embodiment of the coupling element 8, where the transition between the central zone 15 and the proximal conical surface 17 is provided with a ridge 22 that prevents the coupling ring 11 from being moved from the proximal side. from the central area 15 and up to the central area 15.
    [00056] Fig. 5a illustrates a side sectional view of a device
    Petition 870190104897, of 10/17/2019, p. 25/33 / 23 telescopic 1 having a first telescopic part 2 and a second telescopic part 4 inside the first telescopic part 2. The second telescopic part 4 is provided with a coupling element 8 which has a sealing element 14 which has an outer diameter that is equal to or greater than the inner surface diameter 23 of the first telescopic element. The coupling element 8 is further provided with a coupling ring 11 having a projection 20, wherein the outer diameter of the coupling ring or the projection is equal to or greater than the inner diameter of the inner surface 23 of the first telescopic element 2 This means that the outer surface and / or the projection 20 of the coupling ring 11 is in contact with the inner surface 23 of the first telescopic element so that there are frictional forces between the two surfaces in the area 24, where there is contact. Thus, if the second telescopic element 4 is moved, pulled or pushed in a longitudinal direction indicated by B, the friction area 24 between the coupling ring 11 and the inner surface 23 ensures that the coupling ring 11 does not move in with respect to the first telescopic element 2. However, the coupling element 8 is moved relative to the coupling ring 11, which means that the distal conical surface 18 is pushed into the coupling ring 11, causing the coupling ring coupling 11 expands and increases the friction between the inner surface 23 of the first telescopic element 2 and the coupling ring 11, as seen in Fig. 5b. Thus, this cooperation between the coupling element, the coupling ring and the first telescopic element prevents the second telescopic element 4 from being pushed in the B direction, where the force applied to the second telescopic element 4 is less than a threshold force value. , as previously discussed.
    [00057] However, if sufficient force, above a predetermined level, is applied to the second telescopic element, the side wall 25 of the first telescopic element will expand, as illustrated in
    Petition 870190104897, of 10/17/2019, p. 26/33 / 23
    Fig. 5c, allowing the coupling ring to go beyond the central area 15 of the coupling element 8 and descend to the first central area. Alternatively, the side wall 25 of the first telescopic element can be compressed in a radial direction out of the coupling ring, obtaining the same effect. Alternatively, if the coupling ring is made of a resilient material, the coupling ring can be compressed by the increased force, obtaining the same effect. In addition, the proximal or distal conical surface of the coupling element can compress to achieve the same effect. And finally, a combination of the aforementioned factors can cause the coupling ring 11 to exceed the central area 15 of the coupling element 8 by applying increased force to the second telescopic element.
    [00058] The relationship between the diameter of the inner surface of the first telescopic element, or the outer tube, the diameter of the coupling ring, the diameter of the central area, or the widest part of the proximal or distal conical surface. The outer diameter of the DR ring can be greater than the inner diameter of the first telescopic element D1: Dr> D1 [00059] For the friction between the outer surface of the coupling ring and the inner surface of the outer tube (first telescopic element): μ1 x FN> μ2 x FN + (μ2 x tga (FN + Ffj)) FN = Normal force between the ring and the inside of the tube and the same force is applied between the ring and the conical surface; Ffj = the spring force between the ring and the conical surface. α = increase in diameter on the conical surface.
    [00060] The increasing diameter of the tapered surfaces, whether of the proximal or distal surface, is preferably in the proportion between the radius (r) and the height (h): r: h> 1:12 and <1: 2 (alternative 1 :1).
    [00061] The hardness of the outer tube or the first telescopic element is preferably in the Shore 55D - 80A range for corrugated tubes or tubes with alternating ridges and ridges, while the hardness of a tube
    Petition 870190104897, of 10/17/2019, p. 27/33 / 23 smooth is preferably between 50D and 70A.
    [00062] Fig. 6 illustrates a telescopic device 100 according to the present invention in a similar configuration, as illustrated in Fig. 5b, where the first telescopic element 2 is a corrugated tubular element 26, which has ridges 27 and grooves 28 The coupling ring 11 engages the inner surface 29 of one of the grooves 28, since the outer diameter of the coupling ring 11 is greater than the inner diameter of the inner surface of the grooves 28, causing increased friction during movement of the second telescopic element 4 in direction B and resulting in the same advantages as the embodiment illustrated in Figs. 5a-c.
    权利要求:
    Claims (18)
    [1]
    1. Telescopic device (1, 100) comprising a first telescopic element (2, 26) and a second telescopic element (4), in which the second telescopic element (4) is arranged and can be moved within the first telescopic element (2 , 26) so that the second telescopic element (4) can be moved in a first and a second axial direction along the longitudinal axis of the first telescopic element (2, 26), a coupling arrangement to limit the displacement of the second element telescopic (4) in relation to the first telescopic element (2, 26) in which the coupling arrangement has a first and a second coupling configuration, in which
    - the first coupling configuration limits the displacement in the first axial direction allowing the displacement in the second opposite axial direction, characterized by the fact that the coupling arrangement also has a second coupling configuration, where
    - the second coupling configuration limits the displacement in the second direction of axial displacement allowing displacement in the first opposite axial direction,
    - where the coupling arrangement is adapted to be selectively converted from the first coupling configuration to the second coupling configuration, and vice versa, by applying force above a predetermined level to the second telescopic element (4) in the axial direction , whose displacement is limited in the first or second coupling configuration.
    [2]
    Telescopic device (1, 100) according to claim 1, characterized in that the application of force to the second telescopic element (4) is provided by pushing the second telescopic element (4) towards the first telescopic element (2, 26).
    Petition 870190104897, of 10/17/2019, p. 29/33
    2/4
    [3]
    Telescopic device (1, 100) according to claim 1, characterized in that the application of force to the second telescopic element (4) is provided by pulling the second telescopic element (4) towards the first telescopic element (2, 26).
    [4]
    Telescopic device (1, 100) according to any one of claims 1 to 3, characterized in that the predetermined level of force is in the range of 1 to 30 N, more specifically in the range of 3 to 20 N, more specifically in the range of 5 to 15 N, more specifically in the range of 6 to 12 N, more specifically in the range of 8 to 10 N.
    [5]
    Telescopic device (1, 100) according to any one of claims 1 to 4, characterized in that the coupling arrangement comprises a coupling element (8) having a proximal end (12) and a distal end (13 ), and a coupling ring (11) surrounding the outer surface of the coupling element (8), wherein the outer surface of the coupling element (8) is provided with a central part having a first outer diameter, a first proximal conical surface (17) in relation to the first central area that ends in a second outer diameter that is smaller than the first outer diameter and a second distal conical surface (18) in relation to the central area that ends in a third outer diameter that is smaller than the first outside diameter.
    [6]
    Telescopic device (1, 100) according to claim 5, characterized in that the coupling element (8) is connected to a distal end of the second telescopic element.
    [7]
    Telescopic device (1, 100) according to claim 5 or 6, characterized in that the coupling ring (11) engages an internal surface (23) of the first telescopic element.
    [8]
    8. Telescopic device (1, 100) according to any
    Petition 870190104897, of 10/17/2019, p. 30/33
    3/4 one of claims 5 to 7, characterized in that the coupling ring has an outer surface provided with a radial protrusion.
    [9]
    Telescopic device (1, 100) according to claim 5, characterized in that the proximal conical surface comprises a stopping means to prevent the coupling ring (11) from maneuvering from the proximal conical surface to the central area.
    [10]
    Telescopic device (1, 100) according to any one of claims 1 to 9, characterized in that the telescopic device (1, 100) is a urinary catheter.
    [11]
    Telescopic device (1, 100) according to any one of claims 1 to 10, characterized in that the surface of the first and / or second telescopic element is coated with a hydrophilic coating to provide a low friction surface.
    [12]
    Telescopic device (1, 100) according to claim 11, characterized in that the telescopic device is packaged for storage and / or transportation with a liquid expansion medium to wet the hydrophilic coating and to keep the hydrophilic coating in one fully hydrated state during storage and / or transportation.
    [13]
    Telescopic device (1, 100) according to any one of claims 1 to 12, characterized in that the second telescopic element (4) is a catheter tube that has a wall that defines an internal lumen (5), where the wall is provided with drainage holes (7) and a proximal end that has an insertable tip (6), which closes the internal lumen (5) of the catheter tube.
    [14]
    Telescopic device (1, 100) according to any of claims 1 to 13, characterized in that the length of the first telescopic element (2, 26) is equal to or greater than the
    Petition 870190104897, of 10/17/2019, p. 31/33
    4/4 length of the second telescopic element (4).
    [15]
    Telescopic device (1, 100) according to any one of claims 1 to 14, characterized in that the first telescopic element (2, 26) is a tubular element that has walls of a gas-impermeable material.
    [16]
    Telescopic device (1, 100) according to any one of claims 1 to 15, characterized in that the telescopic device (1, 100) is provided in a retracted configuration for storage or transportation, in which the first telescopic element ( 2, 26) encloses the second elongated element and the free ends of the first telescopic element (2, 26) are closed by a gas-tight closure.
    [17]
    Telescopic device (1, 100) according to any of claims 1 to 16, characterized in that the first telescopic element (2, 26) is a corrugated tubular element in which the side wall (25) comprises ridges and grooves alternating (27, 28).
    [18]
    18. Telescopic device (1, 100) according to any one of claims 1 to 17, characterized in that the first telescopic element (2, 26) defines a cable that allows the manipulation of the second telescopic element (4).
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    同族专利:
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    法律状态:
    2019-01-08| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-07-23| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2019-12-03| B09A| Decision: intention to grant|
    2020-01-21| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 25/11/2010, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    DKPA200970231|2009-11-26|
    PCT/DK2010/050320|WO2011063816A1|2009-11-26|2010-11-25|A telescopic device|
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