Implantation device of cylindrical full suture anchor

Abstract

The present invention discloses an implantation device for a cylindrical full suture anchor, which relates to the technical field of medical devices, and includes a coaxially arranged fixed handle, an inner tube, an outer tube, an inner core, a thread fixer and an excitation knob, wherein the inner tube is partially inserted into the outer tube, the first end of the inner tube extends out of the outer tube, the second end of the inner tube is used to abut against one end of the cylindrical full suture anchor, and the inner tube is fixedly connected to the fixed handle; the outer tube can move axially relative to the inner tube and the fixed handle; the inner core is arranged in the fixed handle, the outer tube is fixedly connected to the inner core, a multi-head external thread is arranged on the outer wall of the inner core, and a circumferentially fixed and axially sliding connection is formed between the inner core and the fixed handle; the thread fixer is fixedly connected to the inner core; the excitation knob is circumferentially rotated and axially fixedly connected to the fixed handle, and a multi-head internal thread threadedly connected to the multi-head external thread is fixedly arranged on the inner wall of the excitation knob. The present invention improves the implantation effect of the cylindrical full suture anchor.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, in particular to an implantation device for a cylindrical full-suture anchor. Background Art

[0002] The full-suture anchor is an emerging bone anchor implant that relies on the displacement of the traction line (suture) to deform the full-suture anchor, expand it in the bone and squeeze the surrounding tissue, thereby obtaining a fixed point, making it easier for doctors to perform subsequent tissue suturing work.

[0003] The cylindrical all-suture anchor is a type of all-suture anchor. This type of anchor is designed to be cylindrical and hollow. It is characterized by being composed entirely of suture and does not have a traditional rigid anchor body. Due to the lack of a rigid metal or polymer anchor body, the cylindrical all-suture anchor may provide greater flexibility and adaptability to suit different surgical needs and anatomical structures, and can provide good fixation and stability while reducing damage to surrounding tissues.

[0004] However, existing devices for implanting cylindrical full-suture anchors are often complex in structure and relatively expensive. Furthermore, during use, existing devices for implanting cylindrical full-suture anchors often involve removing the cylindrical full-suture anchor from the implant tube and then expanding the cylindrical full-suture anchor into a spherical shape by pulling with a puller wire. This characteristic of the operating tip often prevents the expanded anchor from being in close contact with the bone wall after being completely removed from the implant tube, especially in patients with osteoporosis or low bone density, which may reduce the effectiveness and durability of fixation. Summary of the Invention

[0005] The object of the present invention is to provide an implantation device for a cylindrical full-suture anchor to solve the problems existing in the above-mentioned prior art and improve the implantation effect of the cylindrical full-suture anchor.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] The present invention provides a cylindrical full-suture anchor implantation device, comprising a coaxially arranged fixed handle, an inner tube, an outer tube, an inner core, a thread fixer and an activation knob, wherein the fixed handle is hollow;

[0008] The inner tube is partially inserted into the outer tube, the cylindrical full-suture anchor can be placed in the outer tube, and the outer diameter of the cylindrical full-suture anchor is larger than the inner diameter of the inner tube. The first end of the inner tube extends out of the outer tube, and the second end of the inner tube is used to abut against one end of the cylindrical full-suture anchor. The inner tube is fixedly connected to the fixed handle; the outer tube can move axially relative to the inner tube and the fixed handle.

[0009] The inner core is arranged in the fixed handle, the outer tube is fixedly connected to the inner core, the outer wall of the inner core is provided with multiple external threads, and a circumferentially fixed and axially sliding connection is formed between the inner core and the fixed handle;

[0010] The inner core is cylindrical, the thread fixer is fixedly connected to the inner core, and the end of the thread fixer away from the inner tube is used to fix the pull line of the cylindrical full suture anchor;

[0011] The excitation knob is cylindrical, and the first end of the excitation knob extends into the fixed handle. The excitation knob and the fixed handle are circumferentially rotated and axially fixedly connected. The inner wall of the excitation knob is fixedly provided with a multi-head internal thread that is threadedly connected to the multi-head external thread.

[0012] Preferably, the pitch of the multi-start internal thread and the pitch of the multi-start external thread are both 0.5mm-5.0mm, the multi-start internal thread and the multi-start external thread respectively have 4-10 thread grooves, and the outer diameter of the cylindrical anchor is 1.5mm-4.5mm.

[0013] Preferably, a first connecting seat is fixedly provided at one end of the outer tube close to the first end of the inner tube, and the first connecting seat is connected to the inner core via a first connecting piece.

[0014] Preferably, the fixed handle is provided with a through hole corresponding to the first connecting seat, the first connecting seat passes through the through hole, and there is a gap between the first connecting seat and the hole wall of the through hole.

[0015] Preferably, the inner core is connected to the wire fixer via a rotating core buckle, and the inner core and the wire fixer are respectively engaged with the rotating core buckle.

[0016] Preferably, a wire dividing groove for winding the pulling wire is provided at one end of the wire fixing device away from the inner tube.

[0017] Preferably, the multi-start external thread adopts a partial thread.

[0018] Preferably, there is a gap between the inner wall of the outer tube and the outer wall of the inner tube.

[0019] Preferably, the number of the pull wires is 1 to 4;

[0020] Each of the puller wires is folded into a first part and a second part, the first part and the second part of the same puller wire are symmetrically distributed with the axis of the cylindrical full-suture anchor as the center, the areas where the first part and the second part are connected to the cylindrical full-suture anchor have staggered exposed parts and built-in parts, the exposed parts are located outside the cylindrical full-suture anchor, the built-in parts are located inside the cylindrical full-suture anchor, the connection between the built-in parts and the adjacent exposed parts passes through the cylindrical full-suture anchor, and the number of the exposed parts is 2 to 5;

[0021] The specifications of the puller wire are selected according to the specifications of the cylindrical full suture anchor.

[0022] Compared with the prior art, the present invention has achieved the following technical effects:

[0023] During use, the implantation device of the cylindrical full-suture anchor of the present invention can cause the outer tube to retreat by rotating the activation knob, and the cylindrical full-suture anchor gradually leaks out while the cylindrical full-suture anchor automatically expands. That is, under the drive of the activation knob, the traction suture and the multi-head internal threads of the activation knob and the multi-head external threads of the inner core in the implantation device realize the cylindrical full-suture anchor to be implanted and leaked while expanding until it reaches the expected fixed state of expansion into a spherical shape, thereby improving the implantation effect of the cylindrical full-suture anchor.

[0024] Furthermore, the implantation device of the cylindrical full-suture anchor of the present invention does not require the preparation of a screw-in channel in the tissue or bone in advance, has a simple structure and is easy to use. It only requires one hand to hold the fixed handle tightly to keep the fixed handle fixed, and then the other hand to rotate the activation knob to complete the smooth implantation of the cylindrical full-suture anchor, which simplifies the surgical process and reduces the operation time and potential complications.

[0025] Furthermore, during the self-expansion process, the cylindrical all-suture anchor compresses the surrounding tissue or cancellous bone, forming a strong anchoring support force and enhancing the stability of the anchor. The expansion mechanism of the cylindrical all-suture anchor ensures its stable fixation in the tissue or bone, reducing the risk of nail backout.

[0026] Furthermore, the cylindrical all-suture anchor and the implant device of the cylindrical all-suture anchor are made of non-metallic materials, and the materials of the fixed handle, inner tube, outer tube, inner core, wire holder and activation knob are all made of plastic. This means that patients will not be disturbed when undergoing medical imaging examinations such as MRI, and will not trigger metal detectors when passing through security checks, thereby improving patient convenience and safety.

[0027] Furthermore, by tightening and loosening the pull line, the staff can control the expansion and retraction of the suture anchor, which provides greater flexibility and control for surgical operations and helps to precisely adjust the position and fixation force of the anchor. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 Schematic diagram of the structure of the cylindrical full suture anchor implantation device of the present invention;

[0030] Figure 2 Schematic diagram of the structure of the cylindrical full suture anchor implantation device of the present invention;

[0031] Figure 3 It is a partial structural schematic diagram of the implantation device of the cylindrical full suture anchor of the present invention;

[0032] Figure 4 for Figure 2 A partial enlarged view of point A in the middle;

[0033] Figure 5 for Figure 2 A partial enlarged view of point B in the middle;

[0034] Figure 6 for Figure 2 A partial enlarged view of point C in the middle;

[0035] Figure 7 This is a schematic diagram of the connection between the puller wire and the cylindrical full suture anchor in this application;

[0036] In the figure: 100, a cylindrical full-suture anchor implantation device;

[0037] 1. Fixed handle; 2. Trigger knob; 3. Outer tube; 4. Inner core; 5. Rotary core buckle; 6. Thread holder; 7. Pull line; 701. Exposed part; 702. Internal part; 703. First part; 704. Second part; 8. Inner tube; 9. Cylindrical full suture anchor; 10. First connecting seat; 11. First connecting plate; 12. Second connecting seat; 13. Second connecting plate; 14. Limiting protrusion ring. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0039] The object of the present invention is to provide an implantation device for a cylindrical full-suture anchor to solve the problems existing in the above-mentioned prior art and improve the implantation effect of the cylindrical full-suture anchor.

[0040] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0041] like Figures 1 to 7 As shown, this embodiment provides a cylindrical full-suture anchor implantation device 100, comprising a coaxially arranged fixed handle 1, an inner tube 8, an outer tube 3, an inner core 4, a thread fixer 6 and an activation knob 2, wherein the fixed handle 1 is hollow;

[0042] The inner tube 8 is partially inserted into the outer tube 3, and the cylindrical full-suture anchor 9 can be placed in the outer tube 3. The outer diameter of the cylindrical full-suture anchor 9 is larger than the inner diameter of the inner tube 8. The first end of the inner tube 8 extends out of the outer tube 3, and the second end of the inner tube 8 is used to abut against one end of the cylindrical full-suture anchor 9. The inner tube 8 is fixedly connected to the fixed handle 1; the outer tube 3 can move axially relative to the inner tube 8 and the fixed handle 1.

[0043] The inner core 4 is arranged in the fixed handle 1, the outer tube 3 is fixedly connected to the inner core 4, the outer wall of the inner core 4 is provided with multiple external threads, and a circumferentially fixed and axially sliding connection is formed between the inner core 4 and the fixed handle 1;

[0044] The inner core 4 is cylindrical, and the thread fixer 6 is fixedly connected to the inner core 4. The end of the thread fixer 6 away from the inner tube 8 is used to fix the pull wire 7 of the cylindrical full suture anchor 9;

[0045] The excitation knob 2 is cylindrical, and the first end of the excitation knob 2 extends into the fixed handle 1. The excitation knob 2 and the fixed handle 1 rotate circumferentially and are fixedly connected axially. The inner wall of the excitation knob 2 is fixedly provided with multiple internal threads connected to the multiple external threads.

[0046] The specific method of using the cylindrical full suture anchor implantation device 100 of this embodiment is as follows:

[0047] The whole formed by the fixed connection of the outer tube 3, the inner core 4 and the thread fixer 6 is called a moving assembly. First, the pull wire 7 is fixedly connected to the cylindrical full suture anchor 9 by insertion, and the cylindrical full suture anchor 9 is placed in the inner hole of the outer tube 3. The pull wire 7 passes through the inner hole of the inner tube 8 along the axial direction to the thread fixer 6 and is fixed to the thread fixer 6 at the tail end (i.e., the end away from the inner tube 8);

[0048] Then, the end of the outer tube 3 away from the fixed handle 1 is placed into the tissue part of the patient where the cylindrical full-suture anchor 9 needs to be implanted. The surgeon holds the fixed handle 1 with one hand to keep the fixed handle 1 and the inner tube 8 stationary, and holds the excitation knob 2 with the other hand and rotates it clockwise. Since the multi-head internal thread on the excitation knob 2 is threadedly connected with the multi-head external thread on the inner core 4, and the inner core 4 cannot rotate relative to the fixed handle 1, the inner core 4 will be driven to move axially, that is, the above-mentioned moving component will move axially relative to the fixed handle 1 and the inner tube 8. The axial movement direction at this time should be in the direction away from the patient's body, so that the head of the outer tube 3 exits the tissue part of the patient where the cylindrical full-suture anchor 9 needs to be implanted;

[0049] As the moving assembly moves axially, the second end of the inner tube 8 abuts against the cylindrical full-suture anchor 9, and the movement of the thread fixer 6 tightens and stimulates the cylindrical full-suture anchor 9 through the pulling line 7, so that the cylindrical full-suture anchor 9 leaks out of the outer tube 3 while expanding. As the moving assembly moves, the cylindrical full-suture anchor 9 will gradually be located outside the outer tube 3, and the cylindrical full-suture anchor 9 continues to self-expand. During the self-expansion process, the cylindrical full-suture anchor 9 squeezes out the outer tube 3. Press the surrounding tissue or cancellous bone to form a strong anchoring support force, which enhances the stability of the anchor until the pulling wire 7 fixed on the wire fixer 6 is seen from the tail end of the activation knob 2. Stop rotating the activation knob 2, loosen the pulling wire 7 from the wire fixer 6, and confirm that the "cylindrical full suture anchor 9" is expanded into place. Then, detach the pulling wire 7 from the implantation device 100 of the cylindrical full suture anchor of this embodiment to complete the activation of the "cylindrical full suture anchor 9".

[0050] In the optional solutions of this embodiment, it is more preferred that the pitch of the multi-start internal thread and the pitch of the multi-start external thread are both 0.5mm-5.0mm, the multi-start internal thread and the multi-start external thread have 4-10 thread grooves respectively, and the outer diameter of the cylindrical anchor is 1.5mm-4.5mm.

[0051] In this embodiment, the outer tube 3 and the inner core 4 are fixedly connected. Specifically:

[0052] A first connecting seat 10 is fixedly provided at one end of the outer tube 3 near the first end of the inner tube 8. The first connecting seat 10 is connected to the inner core 4 via a first connecting piece 11. A through hole is provided in the fixed handle 1 corresponding to the first connecting seat 10. The first connecting seat 10 passes through the through hole, and a gap is formed between the first connecting seat 10 and the hole wall of the through hole.

[0053] In this embodiment, the inner core 4 is fixedly connected to the wire holder 6. Specifically:

[0054] The inner core 4 is connected to the wire fixer 6 through the core rotating buckle 5 , and the inner core 4 and the wire fixer 6 are respectively engaged with the core rotating buckle 5 .

[0055] In this embodiment, the inner tube 8 is fixedly connected to the fixed handle 1. Specifically:

[0056] A second connecting seat 12 is provided at the first end of the inner tube 8 , and the second connecting seat 12 is fixedly connected to the fixed handle 1 via a second connecting piece 13 .

[0057] In an optional solution of this embodiment, it is more preferred that a branching groove for winding the pulling wire 7 is provided at one end of the wire holder 6 away from the inner tube 8. The provision of the branching groove can facilitate winding and fixing the pulling wire 7 on the wire holder 6.

[0058] In the optional solution of this embodiment, it is more preferred that the multi-start external thread adopts a partial thread.

[0059] In an optional solution of this embodiment, it is more preferred that a gap exists between the inner wall of the outer tube 3 and the outer wall of the inner tube 8 .

[0060] In this embodiment, a circumferentially fixed and axially sliding connection is formed between the inner core 4 and the fixed handle 1. Specifically:

[0061] Two first limiting surfaces are provided on the outer wall of the inner core 4, and the first limiting surfaces are tangent to the circumference of the inner core 4, and second limiting surfaces corresponding to the first limiting surfaces are provided on the inner wall of the fixed handle 1, and the second limiting surfaces are fitted and slidably matched with the corresponding first limiting surfaces.

[0062] In this embodiment, the excitation knob 2 and the fixed handle 1 are circumferentially rotatable and axially fixedly connected. Specifically:

[0063] A limiting convex ring 14 is provided on the excitation knob 2, and a limiting groove is provided in the fixed handle 1 corresponding to the limiting convex ring 14. The limiting convex ring 14 is set in the limiting groove. The limiting convex ring 14 can rotate in the limiting groove but cannot slide axially relative to the limiting groove.

[0064] In the optional solution of this embodiment, it is more preferred that the number of the pulling wires 7 is 1 to 4;

[0065] Reference Figure 7Each puller wire 7 is folded into a first part 703 and a second part 704. The first part 703 and the second part 704 in the same puller wire 7 are symmetrically distributed with the axis of the cylindrical full-suture anchor 9 as the center. The areas where the first part 703 and the second part 704 are connected to the cylindrical full-suture anchor 9 have staggered exposed parts 701 and built-in parts 702. The exposed part 701 is located outside the cylindrical full-suture anchor 9, and the built-in part 702 is located inside the cylindrical full-suture anchor 9. The connection between the built-in part 702 and the adjacent exposed part 701 passes through the cylindrical full-suture anchor 9. The number of exposed parts 701 is 2 to 5.

[0066] The specification of the puller wire 7 is selected according to the specification of the cylindrical full suture anchor 9. In this embodiment, the optional range of the diameter of the cylindrical full suture anchor 9 is 1.5 mm to 4.5 mm, and the optional range of the specification of the puller wire 7 is 2-0 to 2.

[0067] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A cylindrical full suture anchor implantation device, characterized in that: It includes a coaxially arranged fixed handle, an inner tube, an outer tube, an inner core, a wire fixer and an excitation knob, wherein the fixed handle is hollow; The inner tube is partially inserted into the outer tube, the cylindrical full suture anchor can be placed in the outer tube, and the outer diameter of the cylindrical full suture anchor is larger than the inner diameter of the inner tube, the first end of the inner tube extends out of the outer tube, the second end of the inner tube is used to abut against one end of the cylindrical full suture anchor, and the inner tube is fixedly connected to the fixed handle; the outer tube can move axially relative to the inner tube and the fixed handle; The inner core is arranged in the fixed handle, the outer tube is fixedly connected to the inner core, the outer wall of the inner core is provided with multiple external threads, and a circumferentially fixed and axially sliding connection is formed between the inner core and the fixed handle; The inner core is in a cylindrical shape, the thread fixer is fixedly connected to the inner core, and the end of the thread fixer away from the inner tube is used to fix the pulling wire of the cylindrical full suture anchor; the number of the pulling wires is 1 to 4; each of the pulling wires is folded into a first part and a second part, the first part and the second part of the same pulling wire are symmetrically distributed with the axis of the cylindrical full suture anchor as the center axis, the area where the first part and the second part are connected to the cylindrical full suture anchor has staggered distribution of exposed parts and built-in parts, the exposed part is located outside the cylindrical full suture anchor, the built-in part is located inside the cylindrical full suture anchor, the connection between the built-in part and the adjacent exposed part passes through the cylindrical full suture anchor, and the number of the exposed parts is 2 to 5; The excitation knob is cylindrical, and the first end of the excitation knob extends into the fixed handle. The excitation knob and the fixed handle are circumferentially rotatable and axially fixedly connected. The inner wall of the excitation knob is fixedly provided with multiple internal threads that are threadedly connected to the multiple external threads.

2. The cylindrical full suture anchor implantation device according to claim 1, characterized in that: The pitch of the multiple internal threads and the pitch of the multiple external threads are both 0.5mm-5.0mm, the multiple internal threads and the multiple external threads have 4-10 thread grooves respectively, and the outer diameter of the cylindrical full suture anchor is 1.5mm-4.5mm.

3. The cylindrical full suture anchor implantation device according to claim 1, characterized in that: A first connecting seat is fixedly provided at one end of the outer tube close to the first end of the inner tube, and the first connecting seat is connected to the inner core via a first connecting sheet.

4. The cylindrical full suture anchor implantation device according to claim 3, characterized in that: The fixed handle is provided with a through hole corresponding to the first connecting seat, the first connecting seat passes through the through hole, and there is a gap between the first connecting seat and the hole wall of the through hole.

5. The cylindrical full suture anchor implantation device according to claim 1, characterized in that: The inner core is connected to the wire fixer through a rotating core buckle, and the inner core and the wire fixer are respectively clamped with the rotating core buckle.

6. The cylindrical full suture anchor implantation device according to claim 1, characterized in that: A wire dividing groove for winding the pulling wire is provided at one end of the wire fixing device away from the inner tube.

7. The cylindrical full suture anchor implantation device according to claim 1, characterized in that: The multi-start external threads adopt partial threads.

8. The cylindrical full suture anchor implantation device according to claim 1, characterized in that: There is a gap between the inner wall of the outer tube and the outer wall of the inner tube.

9. The cylindrical full suture anchor implantation device according to claim 1, characterized in that: The specification of the puller wire is selected according to the specification of the cylindrical full suture anchor.

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