• 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:
    Bone graft introducer device, comprising a main introducer, a sheath jacket and a pusher plunger; the main introducer presenting a hollow elongated rod geometry, with a hollow space in its interior communicating with the lateral exterior of said main introducer through a window or opening, and also having a proximal part disposed at one end, of a an annular stop disposed next to the proximal part towards the inside of the main introducer and of an end-of-stroke element arranged in turn towards the interior of the main introducer and then of the annular stop; the envelope jacket having an elongated and hollow cylinder geometry therein, with a stop and closure element at one end and a stroke stop at the other end; the pusher piston having an elongated rod geometry and a stop at one of its ends. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2681573A1
    申请号:ES201830037
    申请日:2018-01-12
    公开日:2018-09-13
    发明作者:Alberto MARQUES RAPELA；Jesus Maria Insausti Isturiz
    申请人:Ansabere Surgical SL；
    IPC主号:
    专利说明:

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    BONE GRAFT INTRODUCTION DEVICE OBJECT OF THE INVENTION
    The purpose of the present invention is to register a bone graft introducer device, which incorporates notable innovations and advantages over the techniques used so far.
    More specifically, the invention proposes the development of a bone graft introducer device, which by its particular arrangement, facilitates the introduction of bone graft in areas of complicated and difficult access, in a safe way.
    BACKGROUND OF THE INVENTION
    Bone grafting is known in the current state of the art, which is a surgical procedure that replaces the missing bone in order to repair those bone fractures that are extremely complex, or that represent a significant risk to the patient's health, or that They don't heal well.
    Bone grafts have a double function: mechanical and biological. The factors that can intervene in the correct incorporation of the graft are the implantation zone, graft vascularization, bone-host interface, donor and host immunogenetics, conservation techniques, various local and systemic factors (hormonal, medication use, bone quality). , chronic degenerative diseases) and mechanical properties (which depend on the size, shape and type of graft used.
    The bone generally has the ability to regenerate completely, but it requires a very small fracture space or some type of scaffolding to do so. Bone grafts can be autologous (harvest bone from the patient's own body, often from the iliac crest), allograft (corpse bone usually obtained from a bone bank), or synthetic (often from hydroxyapatite substances or others of natural and biocompatible origin) with similar mechanical properties to the bone. Most bone grafts are expected to be reabsorbed and replaced with natural bone.
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    The principles of successful bone grafts in the known prior art include:
    • Osteoconduction: Guide the growth of natural bone repair.
    It is a process by which the material provides an environment, structure or physical material appropriate for the apposition of new bone. Three-dimensional growth of capillaries, perivascular tissue, and mesenchymal stem cells is triggered, from the host's host area to the graft. This scaffolding allows the formation of new bone through a predictable pattern, determined by the graft biology and the mechanical environment of the host-graft interface.
    • Osteoinduction: Promote undifferentiated cells to become active osteoblasts.
    It is a process that stimulates osteogenesis, whereby mesenchymal stem cells are recruited in and around the recipient area to differentiate into chondroblasts and osteoblasts. Differentiation and recruitment are modulated by growth factors derived from the graft matrix, whose activity is stimulated by extracting bone mineral.
    Among the growth factors are bone morphogenetic proteins 2, 4 and 7, platelet-derived growth factor, interleukins, fibroblast growth factor, pseudoinsulinic growth factors, granulocyte-macrophage colonies stimulating factors.
    Angiogenic factors are also released, such as vascular growth factor derived from the endothelium and angiogenin.
    Osteoinductive materials can grow bone in the area where it is not normally found.
    • Osteogenesis: It occurs only with autografts.
    Synthesis of new bone from graft or host derived cells. It requires cells capable of generating bone.
    Ideally, a bone graft should have these three previous properties, in addition to being biocompatible and providing biomechanical stability.
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    In the known state of the art, bone grafts are used in virtually all aspects of reconstructive orthopedic surgery and range from fracture treatment to complex limb salvage techniques in tumor surgery. Therefore, the introduction of bone graft is necessary in cases where it is required:
    • Merge joints to prevent movement
    • Repair broken bones (fractures) that have bone loss
    • Repair injured bone that has not healed.
    In the resulting concrete problem when an intersomatic fusion is performed, surgical fusion of the lumbar spine is a widely used method for the treatment of painful lumbar segmental instability associated or not with root compression; Its objective is to eliminate this instability and thus stabilize and strengthen the spine to relieve low back pain.
    Intersomatic fusions are those that eliminate the intervertebral disc and replace it with bone graft.
    Thus, vertebral fusion is the union or fusion of two or more vertebrae. To facilitate this fusion, the use of bone grafting is necessary. Small amounts of bone are taken from the patient's pelvis (autologous graft) or from a donor (allograft), and packed between the vertebrae, in order to "fuse" them. Implants are often used (such as grilles, bars, hooks and screws), designed to ensure proper intervertebral alignment and increase the chances of successful fusion. In addition, as the consolidation process progresses, these implants provide greater strength and stability to the spine.
    Within the intersomatic fusions there are different techniques, depending on the access route. The most frequent are the so-called PLIF, ALIF, TLIF and XLIF.
    In the known state of the art of surgery it is not known to use any external tools intended to be used to facilitate the introduction of bone grafting in complicated and difficult to access areas.
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    Therefore, the generic instruments are now helped to introduce the bone graft, with the drawbacks that this entails:
    - The introduction of bone graft with the current devices (that is, general instruments not specifically intended for this use, such as tweezers) becomes quite uncomfortable and tedious, which implies that the procedure is very slow.
    - Because there is nothing specifically designed, the introduction of graft is unsafe, since neither the instruments nor the graft itself is guided towards the desired area.
    - It is the main surgeon who has to perform all the actions for the introduction.
    The present invention contributes to solve and solve the present problem, since it facilitates the introduction of bone grafting in difficult and difficult areas.
    DESCRIPTION OF THE INVENTION
    The present invention has been developed in order to provide a bone graft introducer device, which is essentially characterized by the fact that it comprises a main introducer, a wrap jacket and a pusher plunger; the main introducer presenting a geometry as a hollow elongated rod, with a hollow space inside which communicates with the lateral exterior of said main introducer through a window or opening, and also provided with a proximal part arranged at one end, of an annular stop disposed next to the proximal part towards the inside of the main introducer itself and of an end-of-stroke element arranged in turn towards the inside of the main introducer and following the annular stop; the jacket having a geometry in the shape of an elongated and hollow cylinder inside, with a stop and close element at one end and a run stop at the other end; the pusher piston presenting a geometry as an elongated rod and with a stop at one of its ends; the main introducer and the wrap jacket having adequate proportions for the mobile housing of the main introducer inside the wrap sleeve with the same axial axis and from the end of the wrap sleeve where the stop element is; the stop element of the wrap jacket and the end element of the main introducer having a geometry suitable for complementary coupling in the introduction of the main introducer through the inside of the wrap sleeve; presenting the pusher piston and the main introducer some proportions
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    suitable for the mobile introduction of the main pusher plunger inside the hollow space of the main introducer housed in turn in the jacket.
    Preferably, in the bone graft introducer device, the proximal part of the main introducer has a blunt geometry termination.
    Additionally, in the bone graft introducer device, the running stop of the wrap jacket has a circular geometry accompanied by a cut.
    Additionally, in the bone graft introducer device, the thrust plunger stop has a circular geometry accompanied by a cut.
    Thanks to the present invention, it is possible to facilitate the introduction of bone graft in areas of complicated and difficult access.
    Other features and advantages of the bone graft introducer device will be apparent from the description of a preferred but not exclusive embodiment, which is illustrated by way of non-limiting example in the accompanying drawings, in which:
    BRIEF DESCRIPTION OF THE DRAWINGS
    Figures 1, 2 and 3.- They are schematic and perspective views of the different constituent elements and separately from a preferred embodiment of the bone graft introducer device of the present invention.
    Figures 4, 5, 6 and 7.- They are schematic and perspective views indicating the use of a preferred embodiment of the bone graft introducer device of the present invention.
    DESCRIPTION OF A PREFERRED EMBODIMENT
    The bone graft introducer device of the present invention comprises a main introducer 1, a wrap sleeve 2 and a pusher plunger 3, as shown schematically and respectively separately in Figures 1, 2 and 3.
    As can be seen in Figure 1, the main introducer 1 has a geometry of
    hollow elongated rod mode, with a hollow and longitudinal space 11 inside which
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    communicates with the lateral exterior of said main introducer 1 through a window 12 or also longitudinal opening.
    The main introducer 1 has a proximal part 13 disposed at one end and with a blunt geometry termination, an annular stop 14 arranged next to the proximal part 13 and into the main introducer 1 itself.
    The same main introducer 1 also has an end-of-stroke element 15 also arranged inwardly of the main introducer 1 and then the annular stop 14.
    As shown in Figure 2, the jacket 2 has a geometry in the form of an elongated and hollow cylinder in its interior, with a stop element 21 and closure at one end and a stroke stop 22 at the other end.
    As shown schematically in Figure 3, the pusher piston 3 has an elongated rod-like geometry and with a stop 31 at one of its ends.
    As shown schematically in Figure 4, the main introducer 1 and the wrap jacket 2 have mutual proportions suitable for the mobile housing of the main introducer 1 inside the wrap sleeve 2, by the end of the wrap jacket 2 where there is the abutment element 21, and as indicated by the arrow of Figure 4, resulting in an arrangement with the same axial axis 4. For this, the wrapping jacket 2 fits perfectly to the outer contour of the main introducer 1, to thus ensure the effective closing of window 12 of the main introducer 1.
    After the introduction and accommodation of the main introducer 1 inside the jacket 2, the stop element 21 of the jacket 2 and the end element 15 of the main introducer 1 are coupled as shown schematically in the Figure 5, and for which they present a suitable geometry for this purpose.
    Similarly, the pusher piston 3 and the main introducer 1 have suitable mutual proportions for the mobile introduction of the main pusher piston 3
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    inside the main introducer 1 housed in turn inside the jacket 2, as indicated by the arrow in figure 6.
    The bone graft introducer device is designed to be used to facilitate the introduction of bone graft in difficult and difficult areas.
    In the use of the bone graft introducer device, the bone graft is introduced into the hollow space 11 of the main introducer 1 through the window 12 enabled for this purpose.
    The main introducer 1 is arranged in the area in which it is desired to insert the bone graft through the proximal part 13, and it is for this reason that said proximal part 13 has a blunt termination in order to avoid possible injuries to nerve structures. In addition, the annular stop 14 of the main introducer 1 prevents its inadequate or excessive introduction and damage of sensitive structures.
    The wrapping jacket 2 then closes the window 12 of the main introducer 1 by perfectly fitting the outer section of the main introducer 1, as shown in Figure 4, in order to avoid loss of graft during transport, as well as the introduction and graft compaction.
    The coupling of the abutment element 21 of the jacket 2 and of the end-of-stroke element 15 of the main introducer 1 means that the jacket 2 and the main introducer 1 become a single element and thus facilitate its handling, as It can be seen schematically in Figure 5.
    Then, as can be seen in Figures 6 and 7, the pusher pin 3 is introduced through the inner hollow space 11 of the main introducer 1, and compacts and displaces the graft previously introduced in said hollow space 11 of the main introducer 1 to place it in the desired area. The stop 31 at one of the ends of the pusher pin 3 facilitates its manual thrust or allows it to be impacted, as well as the introduction and compaction. In addition, said stop 31 and the stroke stop 22 of the jacket 2 also determine the end of the stroke of the pusher 3 to prevent it from protruding from the other end of the main introducer 1 and causing possible damage.
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    The race stop 22 also acts as a safety stop for the user in case of being hit.
    In addition, the stroke stop 22 of the jacket 2 and the stop 31 of the pusher 3 are circular geometry accompanied by a cut to prevent rolling.
    The bone graft introducer device of the proposed invention provides many advantages over the prior art.
    It facilitates the introduction of bone tissue, making the procedure effective and comfortable.
    Makes the introduction of bone graft safe, avoiding damaging risk elements and placing the graft in the desired area
    Shorten the times of the surgical procedure, since the procedure is simpler
    Take advantage of the amount of bone graft, since it is not wasted in areas where it is not necessary.
    The bone graft introducer device of the invention helps the bone graft compaction, with the advantages that it provides to the main objective of the surgical procedure, which is bone regeneration.
    It improves the total time of surgery, since the introduction of the graft can be done in two phases:
    - Loading of the device, which can be carried out by personnel attached to the main surgeon, such as the nurse. Meanwhile, said surgeon uses that time for other phases required in the surgical intervention.
    - Introduction of the graft, which is always performed by the surgeon, but since everything is prepared beforehand, the execution time is very short (approx. 1 minute).
    In surgical procedures of intersomatic fusion, the problem of tissue instruction is clearly presented since the area is difficult to access and problematic. The disc space to be filled with graft is about 10 cm away and also in the vicinity of vertebral body structures such as the aorta and cava.
    In the result obtained with the bone graft introducer device of the present invention, the duration of the bone graft introduction phase is reduced by 90%, which means a very important reduction in the total time of the intersomatic fusion. . This reduction in time is due to the fact that the introduction is done in a safe, comfortable and effective way, and that the load has been carried out by a person attached to the surgeon as is the nursing staff.
    The details, shapes, dimensions and other accessory elements, as well as the materials used in the manufacture of the bone graft introducer device of the invention, may be conveniently replaced by others that are technically equivalent and do not depart from the essentiality of the invention or the scope defined by the claims included below.
    权利要求:
    Claims (4)
    [1]
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    1. Bone graft introducer device, characterized in that it comprises a main introducer (1), a wrap jacket (2) and a pusher plunger (3); the main introducer (1) presenting a hollow elongated rod-like geometry, with a hollow space (11) inside which communicates with the lateral exterior of said main introducer (1) through a window (12) or opening, and also provided with a proximal part (13) disposed at one end, an annular stop (14) then disposed of the proximal part (13) into the main introducer itself (1) and an element (15) of limit switch arranged in turn towards the inside of the main introducer (1) and then the annular stop (14); the envelope jacket (2) presenting an elongated and hollow cylinder geometry in its interior, with a stop element (21) and closure at one end and a stroke stop (22) at the other end; the pusher piston (3) presenting a geometry as an elongated rod and with a stop (31) at one of its ends; the main introducer (1) and the wrap jacket (2) having suitable proportions for the mobile housing of the main introducer (1) inside the wrap sleeve (2) with the same axial axis (4) and from the end of the wrapping jacket (2) where the stopper element (21) is; the stop element (21) of the jacket (2) and the end element (15) of the main introducer (1) presenting a geometry suitable for complementary coupling in the introduction of the main introducer (1) inside of the enveloping shirt (2); the pusher piston (3) and the main introducer (1) having suitable proportions for the mobile introduction of the main pusher piston (3) inside the hollow space (11) of the main introducer (1) in turn housed in the sleeve envelope (2).
    [2]
    2. Bone graft introducer device according to claim 1, characterized in that the proximal part (13) of the main introducer (1) has a blunt geometry termination.
    [3]
    3. Bone graft introducer device according to claim 1, characterized in that the stroke stop (22) of the wrap jacket (2) has a circular geometry accompanied by a cut.
    [4]
    4. Bone graft introducer device according to claim 1, characterized in that the stop (31) of the pusher plunger (3) has a circular geometry accompanied by a cut.
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    同族专利:
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR2473908A1|1980-01-21|1981-07-24|Reynaud Marc|Dispenser for hot pasty dental moulding substance - uses syringe device with substance heated inside inner portion before assembly|
    US20030065333A1|2001-09-28|2003-04-03|Innovative Medical Products Inc.|Bone graft inserter device|
    WO2010081068A1|2009-01-12|2010-07-15|Stryker Development Llc|Syringe and method of use|
    US20140074103A1|2012-09-07|2014-03-13|Zimmer Gmbh, Inc.|Subchondral treatment of bone defects with bone-derived implant|
    US20170340455A1|2014-12-17|2017-11-30|Medmix Systems Ag|Discharge device for bone replacement materials|
    US20160228261A1|2015-02-06|2016-08-11|Benvenue Medical, Inc.|Graft material injector system and method|
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