Anchoring system for rotator cuff repair

Abstract

The application discloses an anchor system for rotator cuff repair, by setting first conveying device and second conveying device corresponding to first implant and second implant respectively, the distal end to the proximal end of the first conveying device and the second conveying device are set as corresponding open circuit section, accommodation section and holding section respectively, the open circuit section is used to open corresponding holes on the target object, and the first implant and the second implant are respectively fixed to the corresponding holes by means of thread rotation and conveying section driving, so that the two ends of the tissue traction accessory are fixed to the target object, and the target tissue is attached to the target object through the connection of the tissue traction accessory and the target tissue. The rotator cuff repair process does not need to use an open circuit device, but part of the open circuit device is combined into the corresponding first conveying device and the second conveying device, thereby reducing the number of surgical instruments and the operation steps, and the problems of too many tools and complex surgical process of the existing rotator cuff repair anchor system are solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and in particular relates to an anchor system for rotator cuff repair. Background Art

[0002] The rotator cuff is a group of tendon complexes wrapped around the humeral head, including the subscapularis tendon, supraspinatus tendon, infraspinatus tendon, and teres minor tendon. The rotator cuff plays an important role in maintaining shoulder joint stability and shoulder joint movement.

[0003] Arthrex has developed the SutureBridge™ Double Row Rotator Cuff Repair technique. This double-row suturing technique uses screw-in anchors for the inner row and drive-in anchors for the outer row. The procedure also involves tools like a cuff cutter, making it a complex procedure. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an anchor system for rotator cuff repair, so as to solve the problem that the existing rotator cuff repair anchor system has many tools and a complicated surgical procedure.

[0005] In order to solve the above problems, the technical solution of the present invention is:

[0006] An anchor system for rotator cuff repair according to the present invention comprises:

[0007] a first conveying device, the first conveying device comprising a first open section, a first accommodating section, and a first gripping section arranged from a distal end to a proximal end;

[0008] a first implant having a thread for screwing into a target object and for fixing one end of the tissue distraction attachment to the target object; and the first implant is configured to be arranged in the first receiving section, the first implant having an axial degree of freedom relative to the first receiving section, and the first implant and the first receiving section having a limited degree of freedom of relative rotation in a circumferential direction;

[0009] a second conveying device, comprising a second open section, a second accommodating section, and a second gripping section arranged from the distal end to the proximal end, and a conveying section sleeved on the main section, wherein the freedom of axial movement of the conveying section relative to the second accommodating section is restricted;

[0010] a second implant configured to fix the other end of the tissue retraction attachment to the target object; and the second implant is configured to be arranged in the second receiving section;

[0011] a tissue retraction member configured to at least partially penetrate the target tissue and to retract and attach the target tissue to the target object in an implanted state;

[0012] The first open section is configured to form a first hole on the target object for screwing the first implant into it; the second open section is configured to form a second hole on the target object for driving the second implant into it; and the delivery section is configured to release the restriction on the freedom of axial movement relative to the second accommodating section in the implanted state and push the second implant into the second hole.

[0013] In the anchor system for rotator cuff repair of the present invention, the first implant has a first outer ring surface and at least one through hole for the tissue retraction attachment to pass through, and the first implant is provided with an axial through hole opened in the axial direction and forming a first inner ring surface, and the first implant is sleeved in the first accommodating section through the axial through hole;

[0014] The thread is provided on the first outer ring surface, the anti-rotation part is provided on the first inner ring surface, and the anti-rotation fitting part is provided on the first accommodating section. The anti-rotation part cooperates with the anti-rotation fitting part to realize that the freedom of relative rotation of the first implant and the first accommodating section in the circumferential direction is restricted.

[0015] In the anchor system for rotator cuff repair of the present invention, the thread comprises a first thread segment and a second thread segment arranged from the distal end to the proximal end; the outer diameter of the first thread segment gradually increases from the distal end to the proximal end.

[0016] In the anchor system for rotator cuff repair of the present invention, the anti-rotation portion is a plurality of anti-rotation ribs arranged at intervals along the circumferential direction on the first inner ring surface, and the anti-rotation fitting portion is a plurality of anti-rotation grooves correspondingly opened on the first accommodating section.

[0017] In the anchor system for rotator cuff repair of the present invention, a plurality of hollow channels are provided between the first outer ring surface and the first inner ring surface.

[0018] In the anchor system for rotator cuff repair of the present invention, the first delivery device further includes a first main body section located between the first accommodating section and the first gripping section, and a hollow channel for the tissue traction attachment to penetrate is provided in the first main body section and the first gripping section.

[0019] In the anchor system for rotator cuff repair of the present invention, the outer ring surface of the second implant is provided with a plurality of annular step protrusions arranged along the axial direction, the outer diameter of the annular step protrusion gradually increases from the distal end to the proximal end, and the distal end of the second implant is provided with a slot for fixing the tissue traction attachment.

[0020] In the anchor system for rotator cuff repair of the present invention, the second delivery device further includes a limiter, which is engaged between the second gripping section and the delivery section and is used to limit the relative position between the delivery section and the second gripping section.

[0021] The anchor system for rotator cuff repair of the present invention, the second delivery device further comprises a second main body section located between the second accommodating section and the second gripping section;

[0022] The delivery section includes a connected pushing sleeve section and a pushing execution section, the pushing sleeve section is sleeved and slidably connected to the second main body section, the distal end of the pushing sleeve section is configured to abut against the second implant, and the proximal end of the pushing execution section is configured to extend from the proximal end of the second gripping section to cooperate to form a limiting space for accommodating the limiter.

[0023] In the anchor system for rotator cuff repair of the present invention, a guide hole is provided on the second open section for allowing the tissue traction attachment to pass through.

[0024] Due to the adoption of the above technical solution, the present invention has the following advantages and positive effects compared with the prior art:

[0025] In one embodiment of the present invention, a first delivery device and a second delivery device are provided, which correspond to the first implant and the second implant respectively, and the distal ends and proximal ends of the first delivery device and the second delivery device are provided as corresponding opening sections, receiving sections and gripping sections, respectively. The opening sections open corresponding holes on the target object, and the first implant and the second implant can be fixed to the corresponding holes respectively by screwing in the thread and driving in the delivery sections. In this way, the two ends of the tissue traction attachment can be fixed to the target object, and the target tissue can be attached to the target object by connecting the tissue traction attachment to the target tissue. In the rotator cuff repair process, the anchor system of this embodiment does not require the use of an opener. Instead, the opener portion is merged into the corresponding first delivery device and the second delivery device, which reduces the number of surgical instruments and the number of surgical steps, thereby solving the problem of the existing rotator cuff repair anchor system having many tools and a complicated surgical process. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of a first delivery device and a first implant of an anchor system for rotator cuff repair of the present invention;

[0027] Figure 2 is a schematic diagram of a first implant of an anchor system for rotator cuff repair according to the present invention;

[0028] Figure 3 It is a detailed schematic diagram of a first delivery device of the anchor system for rotator cuff repair of the present invention;

[0029] Figure 4 is a schematic diagram of a second delivery device and a second implant of the anchor system for rotator cuff repair of the present invention;

[0030] Figure 5 is a schematic diagram of a second implant of the anchor system for rotator cuff repair of the present invention;

[0031] Figure 6 is a schematic diagram of a delivery section of an anchor system for rotator cuff repair according to the present invention;

[0032] Figure 7 It is a partial schematic diagram of a second delivery device of the anchor system for rotator cuff repair of the present invention;

[0033] Figure 8 Schematic diagram of the second open section of the anchor system for rotator cuff repair of the present invention.

[0034] Explanation of the accompanying drawings: 1. First conveying device; 11. First open section; 12. First main section; 13. First gripping section; 14. First knocking part; 15. Suture through hole; 16. Anti-rotation groove; 2. First implant; 21. Thread; 22. Anti-rotation rib; 23. Through hole; 3. Second conveying device; 31. Second open section; 311. Guide perforation; 32. Second main section; 33. Second gripping section; 34. Conveying section; 331. Axial perforation; 341. Push sleeve section; 342. Front cross bar; 343. Middle extension rod; 344. Rear knocking plate; 35. Limiter; 4. Second implant; 41. Slot; 5. Tissue traction attachment. DETAILED DESCRIPTION

[0035] The following is a detailed description of an anchor system for rotator cuff repair proposed by the present invention in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description and claims.

[0036] Example 1

[0037] See Figures 1 to 8 In one embodiment, an anchor system for rotator cuff repair includes a first delivery device 1, a first implant 2, a second delivery device 3, a second implant 4 and a tissue retractor 5.

[0038] The first delivery device 1 comprises a first open section 11, a first receiving section, and a first gripping section 13, arranged from distal to proximal. The first implant 2 is configured with threads 21 for screwing into a target object and for securing one end of the tissue retractor 5 to the target object. The first implant 2 is configured to be placed in the first receiving section. It has axial freedom relative to the first receiving section, while its circumferential rotational freedom relative to the first receiving section is restricted.

[0039] The second delivery device 3 comprises a second open-circuit section 31, a second receiving section, a second gripping section 33, and a delivery section 34, which is sleeved over the main body section. The delivery section 34 is configured to have its axial freedom of movement restricted relative to the second receiving section. A second implant 4 is configured to secure the other end of the tissue retraction attachment 5 to the target object and is positioned within the second receiving section.

[0040] The tissue retraction member 5 is configured to at least partially penetrate the target tissue and, in an implanted state, to pull and attach the target tissue to the target object.

[0041] The first open section 11 is configured to form a first hole in the target object for screwing the first implant 2 into the target object. The second open section 31 is configured to form a second hole in the target object for driving the second implant 4 into the target object. Moreover, the delivery section 34 is configured to release the restriction on the freedom of axial movement relative to the second receiving section in the implanted state and to push the second implant 4 into the second hole.

[0042] This embodiment provides a first delivery device 1 and a second delivery device 3 corresponding to the first implant 2 and the second implant 4, respectively, and configures the distal and proximal ends of the first delivery device 1 and the second delivery device 3 as corresponding opening sections, receiving sections, and gripping sections, respectively. The opening sections open corresponding holes on the target object, and the first implant 2 and the second implant 4 can be fixed to the corresponding holes by screwing in the thread 21 and driving in the delivery section 34, respectively. This allows the two ends of the tissue retraction attachment 5 to be fixed to the humeral head, and the connection between the tissue retraction attachment 5 and the tendon allows the attachment portion of the tendon to be attached to the humeral head to achieve rotator cuff repair. In the rotator cuff repair process, the anchor system of this embodiment does not require the use of an opener. Instead, the opener portion is incorporated into the corresponding first delivery device 1 and the second delivery device 3, reducing the number of surgical instruments and the number of surgical steps, thereby solving the problem of the existing rotator cuff repair anchor system having many tools and a complicated surgical procedure.

[0043] The specific structure of the anchor system for rotator cuff repair of this embodiment is further described below:

[0044] In this embodiment, the first implant 2 is a screw-in anchor, the first delivery device 1 is a first inserter, the second implant 4 is a driving anchor, the second delivery device 3 is a second inserter, and the tissue retractor 5 is a suture.

[0045] See Figure 2 In this embodiment, the screw-in anchor has a first outer ring surface and at least one through-hole 23 for threading a suture (the number of through-holes 23 can be two or more, specifically arranged at the tail end of the screw-in anchor). The screw-in anchor is also provided with an axial through-hole extending along the axial direction, forming a first inner ring surface. The screw-in anchor is sleeved into the first accommodating section through the axial through-hole. The first outer ring surface is provided with a thread 21, the first inner ring surface is provided with a counter-rotation portion, and the first accommodating section is provided with a counter-rotation mating portion. The counter-rotation portion and the counter-rotation mating portion cooperate to limit the relative rotational freedom of the screw-in anchor and the first accommodating section in the circumferential direction.

[0046] Specifically, the thread 21 may include a first thread segment 21 and a second thread segment 21 arranged from the distal end to the proximal end. The outer diameter of the first thread segment 21 gradually increases from the distal end to the proximal end, that is, the front end of the anchor is designed to be conical to facilitate screwing into the first hole (bone hole) opened on the humeral head.

[0047] The anti-rotation portion can be specifically a plurality of anti-rotation ribs 22 (the specific number can be three or four) arranged at intervals along the circumferential direction on the first inner ring surface. The anti-rotation ribs 22 can be arranged in the axial direction, or can be arranged to be inclined in the direction opposite to the spiral direction of the thread 21. The anti-rotation matching portion is a plurality of anti-rotation grooves 16 corresponding to the first accommodating section. That is, when the anchor nail is screwed into the first accommodating section of the first inserter, the anti-rotation ribs 22 are respectively inserted into the corresponding anti-rotation grooves 16, thereby achieving circumferential freedom limitation while having axial freedom.

[0048] Furthermore, a plurality of hollow channels may be provided between the first outer ring surface and the first inner ring surface, so that the screwed-in anchor has a hollow structure, thereby facilitating the later growth of bone and enhancing the fixation effect.

[0049] In other embodiments, the screw-in anchor can also be directly formed by the spaced threads 21. The inner ring formed by the threads 21 is the aforementioned first inner ring surface, and the gap formed between the threads 21 is the aforementioned hollow channel. The anti-rotation ribs 22 are axially fixed in the inner ring of the threads 21 to enhance the overall strength of the anchor.

[0050] In this embodiment, the first inserter also includes a first main body section 12 located between the first accommodating section and the first gripping section 13 (the first open section 11, the first accommodating section and the first main body section 12 are the rod of the first inserter, and the first open section 11 is the tip of the rod). A hollow channel for suture insertion is provided in the first main body section 12 and the first gripping section 13. Specifically, a suture through hole 15 connected to the open hollow channel can be provided at the distal end of the first accommodating section or the first main body section 12, so that the suture screwed into the anchor pin can be passed through the hollow channel, and an extension hole connected to the hollow channel can be provided at the proximal end of the first gripping section 13, so that the suture in the hollow channel can be extended to facilitate the doctor's use of the suture during surgery. Furthermore, a first knocking portion 14 can be provided at the tail of the first gripping section 13, that is, the first gripping section 13 is used by the doctor to apply the screw-in torque when screwing in the anchor screw, and the first knocking portion 14 is used by the doctor to knock to position the first open section 11 before drilling a bone channel on the humeral head, and the first open section 11 is knocked into a concave point on the bone surface by knocking to facilitate the screw-in operation.

[0051] See Figure 5 In this embodiment, a plurality of annular step protrusions arranged along the axial direction are provided on the outer ring surface of the driving anchor. The outer diameter of the annular step protrusion gradually increases from the distal end to the proximal end. This arrangement can facilitate hammering into the bone tunnel, and a card slot 41 for fixing the suture is provided at the distal end of the driving anchor. The provision of the card slot 41 can eliminate the terminal part of the traditional driving anchor (the traditional driving anchor consists of two parts, the anchor body and the terminal). That is, only the nail body is provided, which simplifies the product structure and saves material costs.

[0052] In this embodiment, the second inserter also includes a limiter 35, which is engaged between the second gripping section 33 and the conveying section 34 and is used to limit the relative position between the conveying section 34 and the second gripping section 33. The function of the limiter 35 is to maintain the relative position between the conveying section 34 and the second gripping section 33 when the second inserter is knocking to form the second hole, and to move out after the second hole is formed. At this time, the anchor nail can be driven into the second hole by knocking the conveying section 34.

[0053] In this embodiment, the second inserter further includes a second main body section 32 located between the second receiving section and the second gripping section 33 (the second open section 31, the second receiving section and the second main body section 32 are the rod of the second inserter, and the second open section 31 is the tip of the rod). Figure 6 The delivery section 34 includes a connected pushing sleeve section 341 and a pushing execution section. The pushing sleeve section 341 is sleeved and slidably connected to the second main body section 32. The distal end of the pushing sleeve section 341 is configured to abut against the driven anchor located in the second accommodating section, and the proximal end of the pushing execution section is configured to extend from the proximal end of the second gripping section 33 to cooperate in forming a limiting space for accommodating the limiter 35.

[0054] The pushing execution section may specifically include a front cross bar 342, two intermediate extension rods 343 and a rear end knocking plate 344, wherein the front cross bar 342 is connected to the proximal end of the pushing sleeve section 341, and the first ends of the two intermediate extension rods 343 are respectively connected to the two lateral ends of the front cross bar 342, and the intermediate extension rod 343 can be axially slidably connected to the second gripping section 33 (specifically, two corresponding axial through holes 331 can be opened on the second gripping section 33), and the second ends of the intermediate extension rods 343 respectively extend out of the proximal end of the second gripping section 33 and are connected to the rear end knocking plate 344, and the space between the proximal end of the second gripping section 33 and the rear end knocking plate 344 is the aforementioned limit space, and the limiter 35 can specifically be a limit block for inserting into the limit space.

[0055] See Figure 8 Furthermore, a guide hole 311 is provided on the second open section 31 for passing the suture to fix the suture.

[0056] When the second inserter is used to open the second hole, the doctor knocks on the rear end knocking plate 344, and the knocking force is transmitted to the second open section 31 through the limit block and the second gripping part; after the second inserter knocks to a predetermined depth, the limit block is removed, and then the rear end knocking plate 344 is knocked, and the push sleeve section 341 pushes the anchor into the bone canal.

[0057] Application Example 1

[0058] This application example provides the steps for using the anchor system for rotator cuff repair of the first embodiment as follows:

[0059] 1. One end of the tissue retraction attachment 5 passes through the first implant 2, and the first implant 2 is sleeved on the first receiving section of the first delivery device 1;

[0060] 2. Knocking the tail end of the first delivery device 1, so that the first open section 11 thereon creates a concave point at the target position of the target object corresponding to the first implant 2, for the operation of screwing the thread 21 into the target object;

[0061] 3. Continue to tap the tail end of the first delivery device 1 until the first open section 11 is pushed into the target object, so that the first implant 2 fits the target object and establishes a first hole for the first implant 2 to be screwed in;

[0062] 4. Rotate the first gripping section 13 so that the thread 21 of the first implant 2 is screwed into the corresponding hole and fixed, thereby implanting the first implant 2 and the tissue retraction attachment 5 into the target object;

[0063] 5. Pass the tissue retractor 5 through the target tissue and tie a knot to complete the first suturing step;

[0064] 6. Position the other end of the tissue retraction attachment 5 on the second open section 31 of the second conveying device 3, and sleeve the second implant 4 on the second receiving section of the second conveying device 3;

[0065] 7. Strike the tail end of the second delivery device 3 to create a second hole in the target object at the target position corresponding to the second implant 4 through the second open section 31 thereon;

[0066] 8. Release the axial movement freedom restriction of the delivery section 34 relative to the second accommodating section, tap the delivery section 34, and implant the second implant 4 into the corresponding hole. At this time, the other end of the tissue retractor 5 is fixed in the target object by the second implant 4, completing the second suturing step.

[0067] This application example further provides specific surgical steps for performing a double-row suturing method using the anchor system of the present application, as follows:

[0068] 1. Strike the first striking portion 14 at the rear end of the first inserter to create a concave point near the humeral joint edge for positioning during the screw-in operation;

[0069] 2. Continue to strike the first striking part 14 to push the first open section (tip) of the first inserter below the bone surface, so that the front end of the screw-in anchor is close to the bone surface, and a bone hole is established when the screw-in anchor is screwed in;

[0070] 3. Grip the first gripping section 13 of the first inserter tightly and screw the screw-in anchor in clockwise until it is flush with the bone surface. Then withdraw the first inserter. The screw-in anchor and the accompanying suture are now implanted into the bone.

[0071] 4. Using the same procedure, implant the second screw-in anchor at the same level as the first screw-in anchor.

[0072] 5. Pass the sutures attached to the two screw-in anchors through the rotator cuff tissue and tie a knot to complete the first suture step;

[0073] 6. Lead the suture that has passed through the rotator cuff tissue out from the guide hole 311 of the second inserter;

[0074] 7. Tap the rear end tapping plate 344 of the tail end of the second inserter to create a bone hole for inserting the anchor screw at an angle below the implantation position of the screw screw.

[0075] 8. Remove the limit block on the second inserter and continue to strike the rear end striking plate 344 to implant the anchor into the bone until the anchor is flush with the bone surface. At this time, the suture passing through the guide perforation 311 is simultaneously squeezed into the bone hole.

[0076] 9. Using the same operation, implant the second anchor at the same level as the first anchor to complete the second suture step.

[0077] Then complete the surgical operation.

[0078] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, if these changes fall within the scope of the claims of the present invention and their equivalents, they still fall within the scope of protection of the present invention.

Claims

1. An anchor system for rotator cuff repair, characterized in that: include: a first conveying device, the first conveying device comprising a first open section, a first accommodating section, and a first gripping section arranged from a distal end to a proximal end; a first implant having a thread for screwing into a target object and for fixing one end of a tissue retraction attachment to the target object; and the first implant is configured to be arranged in the first receiving section, the first implant having an axial degree of freedom relative to the first receiving section, and the first implant and the first receiving section having a limited degree of freedom of relative rotation in a circumferential direction; a second conveying device, the second conveying device comprising a second open section, a second accommodating section, and a second gripping section arranged from the distal end to the proximal end; a second main body section located between the second accommodating section and the second gripping section, and a conveying section sleeved on the second main body section, wherein the freedom of axial movement of the conveying section relative to the second accommodating section is restricted; a second implant configured to fix the other end of the tissue retraction attachment to the target object; and the second implant is configured to be arranged in the second receiving section; a tissue retraction member configured to at least partially penetrate the target tissue and to retract and attach the target tissue to the target object in an implanted state; wherein the first open section is configured to form a first hole on the target object for screwing the first implant into the target object; The second open section is configured to form a second hole in the target object for inserting the second implant, and the delivery section is configured to release the restriction on the freedom of axial movement relative to the second receiving section in the implanted state and push the second implant into the second hole; The first implant has a first outer ring surface and at least one through hole for the tissue retraction attachment to pass through, and the first implant is provided with an axial through hole opened in the axial direction and forming a first inner ring surface, and the first implant is sleeved in the first accommodating section through the axial through hole; The first outer ring surface is provided with the thread, the first inner ring surface is provided with a counter-rotation portion, and the first accommodating section is provided with a counter-rotation fitting portion, and the counter-rotation portion cooperates with the counter-rotation fitting portion to limit the relative rotational freedom of the first implant and the first accommodating section in the circumferential direction; The second conveying device further includes a limiter, which is engaged between the second gripping section and the conveying section and is used to limit the relative position between the conveying section and the second gripping section; The delivery section includes a connected pushing sleeve section and a pushing execution section, wherein the pushing sleeve section is sleeved and slidably connected to the second main body section, the distal end of the pushing sleeve section is configured to abut against the second implant, and the proximal end of the pushing execution section is configured to extend beyond the proximal end of the second gripping section to cooperate to form a limiting space for accommodating the limiter; The second open section is provided with a guide hole for allowing the tissue retraction attachment to pass through.

2. The anchor system for rotator cuff repair according to claim 1, wherein: The thread comprises a first thread segment and a second thread segment arranged from the distal end to the proximal end; the outer diameter of the first thread segment gradually increases from the distal end to the proximal end.

3. The anchor system for rotator cuff repair according to claim 1, wherein: The anti-rotation portion is a plurality of anti-rotation ribs arranged at intervals along the circumferential direction on the first inner ring surface, and the anti-rotation fitting portion is a plurality of anti-rotation grooves correspondingly opened on the first accommodating section.

4. The anchor system for rotator cuff repair according to claim 1, wherein: A plurality of hollow channels are provided between the first outer ring surface and the first inner ring surface.

5. The anchor system for rotator cuff repair according to claim 1, wherein: The first conveying device further includes a first main body section located between the first accommodating section and the first gripping section. A hollow channel for the tissue retraction attachment to penetrate is provided in the first main body section and the first gripping section.

6. The anchor system for rotator cuff repair according to claim 1, wherein: The outer ring surface of the second implant is provided with a plurality of annular step protrusions arranged along the axial direction, the outer diameter of the annular step protrusion gradually increases from the distal end to the proximal end, and the distal end of the second implant is provided with a groove for fixing the tissue retraction attachment.

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