Arthroscopic suture implant

Abstract

The present invention discloses an arthroscopic suture implant, which relates to the technical field of implants. The arthroscopic suture implant comprises a base plate, a through hole is provided on the top of the base plate, and a first limiting component and a second limiting component for limiting the suture are arranged on the top of the base plate, the first limiting component comprises a first fixed plate and a first movable plate, and a threading groove is provided on the side wall of the first fixed plate, the second limiting component comprises a second fixed plate and a second movable plate, and the first movable plate and the second movable plate form a movable plate group. The arthroscopic suture implant improves the point contact of traditional suture knotting into surface release, promotes the healing of tendons or ligaments and bones, and brings about an improvement in surgical efficacy. At the same time, there is no need to repeatedly tie knots, and the thread locking can be completed by only pulling the thread tail, which greatly shortens the operation time. In addition, it can be used for sutures of different thicknesses, has stronger applicability, and is more convenient to use.

Description

Technical Field

[0001] The invention relates to the technical field of implants, in particular to an arthroscopic suture implant. Background Art

[0002] For patients with rotator cuff injuries, some of them need surgical treatment. Currently, the most mainstream surgical method is arthroscopic surgery. Compared with traditional open surgery, arthroscopic surgery has significant advantages such as less trauma, precise surgery, fast recovery, and low risk of infection. During rotator cuff repair surgery, a special fixation device, the anchor, is usually used. The common structure is usually composed of two parts, one is the nail body used to anchor in the bone, and the other is the high-strength suture passing through the nail body. The use process of the anchor is: first drill a hole on the bone surface, tap the thread, screw the anchor in, use the arthroscopic special suture instrument to pass the suture through the tendon tissue, and pull and fix the tendon on the bone surface by tying a knot. Rotator cuff injuries often occur at the tendon attachment point, so they are usually not repaired by direct suture suturing. It is often necessary to implant an anchor in the bone in the tendon attachment area, penetrate the rotator cuff tendon with the high-strength suture attached to the anchor, and then fix it by tying a knot. The tendon stump is fixed to the bone surface with sutures. Over time, healing is achieved between the bone and the tendon, thereby achieving the treatment goal.

[0003] However, one of the challenges currently faced in clinical practice is that arthroscopic surgery techniques have high requirements for the surgeon's operation. Beginners often find it difficult to achieve high-quality suturing and knotting, which in turn leads to a series of problems such as insufficient contact at the tendon-bone interface, excessive or low tension, and thus has a negative impact on tendon-bone healing. Summary of the invention

[0004] The object of the present invention is to provide an arthroscopic suture implant to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an arthroscopic suture implant, comprising a base plate, a through hole is provided on the top of the base plate, and a first limiting assembly and a second limiting assembly for limiting the suture are arranged on the top of the base plate, the first limiting assembly comprises a first fixed plate and a first movable plate, and a threading groove is provided on the side wall of the first fixed plate, the second limiting assembly comprises a second fixed plate and a second movable plate, and the first movable plate and the second movable plate constitute a movable plate group, a sliding mechanism is provided between the movable plate group and the base plate, and the side walls of the movable plate group are fixedly connected with a plurality of triangular blocks arranged in an array, the triangular blocks comprise a first inclined surface and a plane, and the bottom of the base plate is fixedly connected with a plurality of tooth-shaped protrusions arranged in an array, the side walls of the first fixed plate and the second fixed plate are fixedly connected with a plurality of convex strips arranged in an array, and a groove is formed between two adjacent convex strips, the side walls of the movable plate group are rotatably connected with a rotating plate through a rotating rod, the side walls of the movable plate group are provided with a first limiting mechanism for limiting the rotating plate, and a second limiting mechanism is provided between the movable plate group and the base plate.

[0006] Preferably, the sliding mechanism comprises two groups of guide rails fixedly connected to the top of the bottom plate, and each group of guide rails has two guide rails. The bottom of each movable plate group is provided with a guide groove, and the guide rails are inserted into the guide groove.

[0007] Preferably, the first limiting mechanism comprises a first limiting rod and a second limiting rod fixedly connected to the side wall of the movable plate assembly.

[0008] Preferably, the second limiting mechanism includes a fixed block fixedly connected to the side wall of the movable plate group, and a movable rod is inserted into the top of each fixed block, two groups of symmetrically arranged limiting holes are opened on the top of the base plate, and the number of limiting holes in each group is multiple, the movement of the movable rod is pushed by a pushing mechanism, and the side walls of the movable plate group are provided with an indicating mechanism.

[0009] Preferably, the pushing mechanism includes a moving block, and the side wall of the moving block is fixedly connected to a toggle rod, a connecting mechanism is arranged between the moving block and the moving rod, one end of the rotating plate is connected to a pushing plate, and the pushing plate includes a second inclined surface, and a guiding mechanism is arranged between the moving block and the moving plate group.

[0010] Preferably, the guide mechanism comprises a support plate fixedly connected to the side wall of the moving plate group, the side wall of the support plate is connected to two symmetrically arranged T-shaped guide rods through a resistance mechanism, and one end of the T-shaped guide rod is fixed to the side wall of the moving block.

[0011] Preferably, the resistance mechanism comprises two symmetrically arranged mounting holes opened on the side wall of the support plate, a circular ring is fixedly inserted in the mounting hole, and a T-shaped guide rod is inserted in the circular ring.

[0012] Preferably, the connecting mechanism comprises a disc fixedly connected to the top of the moving rod, and a connecting rod is connected between the disc and the moving block via a rotating mechanism.

[0013] Preferably, the rotating mechanism includes a first connecting block fixedly connected to the side wall of the moving block, and a second connecting block is fixedly connected to the top of the disc, the upper end of the connecting rod is rotatably connected to the side wall of the first connecting block through a first rotating shaft, and the lower end of the connecting rod is rotatably connected to the side wall of the second connecting block through a second rotating shaft.

[0014] Preferably, the indicating mechanism comprises a pointer fixedly connected to the side wall of the movable plate group, and two scales are fixedly connected to the top of the bottom plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) This arthroscopic suture implant is provided with a first stopper component and a second stopper component. When in use, the overall structure is a plate-like structure with a central through hole. The high-strength suture used in the operation can pass through the hole from bottom to top. The width of the first stopper component and the second stopper component is set to allow only one-way passage of the suture. The two slits are arranged at an angle to strengthen the grip of the suture and prevent the suture from withdrawing. The bottom plate can evenly disperse the tension of the suture on the surface of the tendon to avoid cutting of the tendon due to local tension concentration. At the same time, it can increase the contact area between the tendon and the bone surface, thereby promoting tendon-bone healing. Another great advantage is that it does not require After repeated knotting, only the tail of the thread needs to be pulled to complete the locking of the thread, which greatly shortens the operation time. In order to strengthen the grip of the tendon stump, a tooth-like protrusion is set at the bottom of the device. The entire implant uses a high-performance medical absorbable material modified from polylactic acid-glycolic acid copolymer (PLGA) material to ensure excellent early mechanical properties and tendon-bone healing. It is fully absorbed during 1-2 years to avoid the risk of long-term detachment and ensure the effect of the operation. In addition, it can shorten the operation time, improve the point contact of traditional suture knotting to surface release, promote the healing of tendons or ligaments and bones, and improve the surgical efficacy.

[0017] (2) This arthroscopic suture implant is provided with a sliding mechanism and a guide mechanism. When in use, the distance between the first movable plate and the first fixed plate, and the distance between the second movable plate and the second fixed plate are adjusted in sequence according to the diameter of the suture. When adjusting, the first movable plate and the second movable plate are pushed to slide along the guide rail, and at the same time, the scale indicated by the pointer is observed. After the distance is adjusted to a suitable distance, the movable block is pushed to move away from the support plate by the toggle rod. When the movable block contacts the second inclined surface, the rotating plate is pushed to rotate upward along the rotating rod, and the movable block moves to the bottom of the rotating plate. When the movable block continues to move, it can The connecting rod is made to rotate, and at the same time, the movable rod is pushed to move downward, and the movable rod is inserted into the limiting hole for limiting the position, which is more stable and reliable, can be used for sutures of different thicknesses, has stronger applicability, and is more convenient to use. When suturing, the suture is placed between the first fixed plate and the first movable plate, and between the second fixed plate and the second movable plate in sequence after passing through the through hole, and when the suture abuts against the top of the rotating plate, the rotating plate can be pushed to rotate downward along the rotating rod. After the suture is placed in place, under the action of the moving block, the upward rotation angle of the rotating plate can be limited, thereby limiting the suture and preventing it from falling out upward, which is more stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the overall structure of the present invention from another perspective;

[0020] Figure 3 It is a schematic diagram of the structure of the tooth-shaped protrusion in the present invention;

[0021] Figure 4 for Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0022] Figure 5 for Figure 2 A schematic diagram of the enlarged structure at B in the middle;

[0023] Figure 6 for Figure 5 Schematic diagram of the enlarged structure at C in the middle;

[0024] Figure 7 for Figure 6 Schematic diagram of the enlarged structure at D in the middle.

[0025] In the figure: 1, bottom plate; 2, sliding mechanism; 201, guide rail; 202, guide groove; 3, second limiting mechanism; 301, limiting hole; 302, fixing block; 303, moving rod; 4, first limiting mechanism; 401, first limiting rod; 402, second limiting rod; 5, pushing mechanism; 501, pushing plate; 502, second inclined surface; 503, moving block; 504, toggle rod; 6, guiding mechanism; 601, supporting plate; 602, T-shaped guide rod; 7, resistance mechanism; 701, mounting hole; 702, circular ring; 8, connecting mechanism; 801, circular disk; 802, connecting rod; 9, rotating mechanism; 901, first connecting block; 902, second connecting block; 903, first rotating shaft; 904, second rotating shaft; 10, indicating mechanism; 1001, scale; 1002, pointer; 11, through hole; 12, first limiting assembly; 1201, first fixed plate; 1202, first movable plate; 13, second limiting assembly; 1301, second fixed plate; 1302, second movable plate; 14, threading groove; 15, triangular block; 1501, first inclined surface; 1502, plane; 16, convex strip; 17, groove; 18, rotating plate; 19, tooth-like protrusion; 20, rotating rod; 21, suture. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-Figure 7The present invention provides a technical solution: an arthroscopic suture implant, comprising a base plate 1, a through hole 11 is provided on the top of the base plate 1, and a first limiting component 12 and a second limiting component 13 for limiting the position of a suture 21 are arranged on the top of the base plate 1, the first limiting component 12 comprises a first fixed plate 1201 and a first movable plate 1202, and a threading groove 14 is provided on the side wall of the first fixed plate 1201, the second limiting component 13 comprises a second fixed plate 1301 and a second movable plate 1302, and the first movable plate 1202 and the second movable plate 1302 form a movable plate group, a sliding mechanism 2 is provided between the movable plate group and the base plate 1, and the side walls of the movable plate group are fixedly connected with a plurality of triangular blocks 15 arranged in an array, the triangular blocks 15 comprise a first inclined surface 1501 and a plane 1502, and the bottom of the base plate 1 The first fixed plate 1201 and the second fixed plate 1301 are fixedly connected with a plurality of array-arranged tooth-shaped protrusions 19 on their side walls, and a groove 17 is formed between two adjacent protrusions 16. The side walls of the movable plate group are rotatably connected with a rotating plate 18 via a rotating rod 20. The side walls of the movable plate group are provided with a first limiting mechanism 4 for limiting the rotating plate 18, and a second limiting mechanism 3 is provided between the movable plate group and the base plate 1. The point contact of traditional suture knotting is improved to surface release, which promotes the healing of tendons or ligaments and bones and brings about improved surgical efficacy. At the same time, there is no need to repeatedly tie knots, and the thread locking can be completed by simply pulling the thread tail, which greatly shortens the operation time. In addition, sutures 21 of different thicknesses can be used, which has stronger applicability and is more convenient to use.

[0028] The sliding mechanism 2 includes two sets of guide rails 201 fixedly connected to the top of the base plate 1, and each set of guide rails 201 has two guide grooves 202 at the bottom of the moving plate group, and the guide rails 201 are inserted into the guide grooves 202 to guide and reset the movement of the moving plate group.

[0029] The first limiting mechanism 4 includes a first limiting rod 401 and a second limiting rod 402 fixedly connected to the side wall of the moving plate group, and limits the rotation angle of the rotating plate 18.

[0030] The second limiting mechanism 3 includes a fixed block 302 fixedly connected to the side wall of the movable plate group, and a movable rod 303 is inserted on the top of each fixed block 302. Two groups of symmetrically arranged limiting holes 301 are opened on the top of the bottom plate 1, and the number of each group of limiting holes 301 is multiple. The movement of the movable rod 303 is pushed by the pushing mechanism 5, and the side walls of the movable plate group are provided with an indicating mechanism 10, which pushes the first movable plate 1202 and the second movable plate 1302 to slide along the guide rail 201. At the same time, observe the scale 1001 indicated by the pointer 1002. After adjusting to a suitable distance, the movable rod 303 is pushed downward by the pushing mechanism 5 and inserted into the limiting hole 301 for limiting. It is more stable and reliable, can be used for sutures 21 of different thicknesses, has stronger applicability, and is more convenient to use.

[0031] The pushing mechanism 5 includes a moving block 503, and the side wall of the moving block 503 is fixedly connected to a toggle rod 504, a connecting mechanism 8 is arranged between the moving block 503 and the moving rod 303, one end of the rotating plate 18 is connected to a pushing plate 501, and the pushing plate 501 includes a second inclined surface 502, and a guiding mechanism 6 is arranged between the moving block 503 and the moving plate group, which is more stable and reliable, can be used for sutures 21 of different thicknesses, has stronger applicability, and is more convenient to use.

[0032] The guiding mechanism 6 includes a supporting plate 601 fixedly connected to the side wall of the moving plate group. The side wall of the supporting plate 601 is connected to two symmetrically arranged T-shaped guide rods 602 through a resistance mechanism 7, and one end of the T-shaped guide rod 602 is fixed to the side wall of the moving block 503, thereby guiding the movement of the moving block 503.

[0033] The resistance mechanism 7 includes two symmetrically arranged mounting holes 701 opened on the side wall of the support plate 601, a circular ring 702 is fixedly inserted in the mounting hole 701, and a T-shaped guide rod 602 is inserted in the circular ring 702, so that the T-shaped guide rod 602 moves under the action of external force and does not move randomly when there is no external force.

[0034] The connecting mechanism 8 includes a disc 801 fixedly connected to the top of the moving rod 303, and a connecting rod 802 is connected between the disc 801 and the moving block 503 through a rotating mechanism 9. When the moving block 503 continues to move, the connecting rod 802 can rotate and at the same time, push the moving rod 303 to move downward.

[0035] The rotating mechanism 9 includes a first connecting block 901 fixedly connected to the side wall of the moving block 503, and a second connecting block 902 is fixedly connected to the top of the disk 801, the upper end of the connecting rod 802 is rotatably connected to the side wall of the first connecting block 901 through a first rotating shaft 903, and the lower end of the connecting rod 802 is rotatably connected to the side wall of the second connecting block 902 through a second rotating shaft 904, thereby ensuring the normal rotation of the connecting rod 802.

[0036] The indicating mechanism 10 includes a pointer 1002 fixedly connected to the side wall of the movable plate group, and two scales 1001 are fixedly connected to the top of the bottom plate 1, which is convenient for observing and controlling the distance between the first movable plate 1202 and the first fixed plate 1201 and the second movable plate 1302 and the second fixed plate 1301.

[0037] Working principle: When in use, first adjust the distance between the first movable plate 1202 and the first fixed plate 1201, and the distance between the second movable plate 1302 and the second fixed plate 1301 according to the diameter of the suture. When adjusting, push the first movable plate 1202 and the second movable plate 1302 to slide along the guide rail 201, and at the same time, observe the scale 1001 indicated by the pointer 1002. After adjusting to the appropriate distance, push the movable block 503 away from the guide rail 201 by pushing the lever 504. The supporting plate 601 moves in the direction of the supporting plate 601. When the moving block 503 abuts against the second inclined surface 502, the rotating plate 18 is pushed to rotate upward along the rotating rod 20, and the moving block 503 moves to the bottom of the rotating plate 18. When the moving block 503 continues to move, the connecting rod 802 can be rotated. At the same time, the moving rod 303 is pushed to move downward, and the moving rod 303 is inserted into the limiting hole 301 for limiting. It is more stable and reliable, can be used for sutures 21 of different thicknesses, has stronger applicability, and is more convenient to use.

[0038] When suturing, the high-strength suture used in the operation can pass through this hole from bottom to top. After passing through the through hole 11, the suture 21 is placed between the first fixed plate 1201 and the first movable plate 1202, and between the second fixed plate 1301 and the second movable plate 1302 in sequence. When the suture 21 abuts against the top of the rotating plate 18, the rotating plate 18 can be pushed to rotate downward along the rotating rod 20. After the suture 21 is placed in place, the upward rotation angle of the rotating plate 18 can be limited under the action of the moving block 503, so that the suture 21 can be limited to prevent it from falling out upward, which is more stable and reliable.

[0039] The width of the first limiting component 12 and the second limiting component 13 is set to allow only one-way passage of the suture, and the two slits are arranged at an angle to strengthen the grip of the suture and prevent the suture from withdrawing. The bottom plate 1 can evenly disperse the tension of the suture on the surface of the tendon to avoid cutting the tendon due to local tension concentration. At the same time, it can increase the contact area between the tendon and the bone surface to promote tendon-bone healing. Another great advantage is that there is no need to repeatedly tie knots, and only the tail of the thread needs to be pulled to complete the locking of the thread, which greatly shortens the operation time. In order to strengthen the grip of the tendon stump, a tooth-like protrusion 19 is provided at the bottom of the device;

[0040] The entire implant uses high-performance medical absorbable materials modified from polylactic acid-glycolic acid copolymer (PLGA) materials to ensure excellent early mechanical properties and tendon-bone healing. It is fully absorbed over a period of 1-2 years to avoid the risk of long-term detachment and ensure the effectiveness of the surgery. It can also shorten the operation time, improve the point contact of traditional suture knotting to surface release, promote the healing of tendons or ligaments and bones, and improve the effectiveness of the surgery.

Claims

1. An arthroscopic suture implant, comprising a base plate (1), characterized in that: The top of the bottom plate (1) is provided with a through hole (11), and the top of the bottom plate (1) is provided with a first limiting component (12) and a second limiting component (13) for limiting the position of the suture (21), the first limiting component (12) comprising a first fixed plate (1201) and a first movable plate (1202), and a threading groove (14) is provided on a side wall of the first fixed plate (1201), the second limiting component (13) comprising a second fixed plate (1301) and a second movable plate (1302), and the first movable plate (1202) and the second movable plate (1302) form a movable plate group, a sliding mechanism (2) is provided between the movable plate group and the bottom plate (1), and the side walls of the movable plate group are fixedly connected with a plurality of Triangular blocks (15) arranged in an array, the triangular blocks (15) comprising a first inclined surface (1501) and a flat surface (1502), the bottom of the bottom plate (1) being fixedly connected to a plurality of tooth-shaped protrusions (19) arranged in an array, the side walls of the first fixed plate (1201) and the second fixed plate (1301) being fixedly connected to a plurality of convex strips (16) arranged in an array, and a groove (17) being formed between two adjacent convex strips (16), the side walls of the movable plate group being rotatably connected to a rotating plate (18) via a rotating rod (20), the side walls of the movable plate group being provided with a first limiting mechanism (4) for limiting the rotating plate (18), and a second limiting mechanism (3) being provided between the movable plate group and the bottom plate (1); The second limiting mechanism (3) comprises a fixed block (302) fixedly connected to the side wall of the movable plate group, and a movable rod (303) is inserted into the top of each fixed block (302); the top of the bottom plate (1) is provided with two groups of symmetrically arranged limiting holes (301), and the number of each group of limiting holes (301) is multiple; the movement of the movable rod (303) is driven by a driving mechanism (5), and the side walls of the movable plate group are all provided with an indicating mechanism (10); The pushing mechanism (5) comprises a moving block (503), and a side wall of the moving block (503) is fixedly connected to a toggle rod (504), a connecting mechanism (8) is provided between the moving block (503) and the moving rod (303), one end of the rotating plate (18) is connected to a pushing plate (501), and the pushing plate (501) comprises a second inclined surface (502), and a guiding mechanism (6) is provided between the moving block (503) and the moving plate group; When the moving block (503) contacts the second inclined surface (502), the rotating plate (18) is pushed to rotate upward along the rotating rod (20), and the moving block (503) is moved to the bottom of the rotating plate (18). When the moving block (503) continues to move, the connecting rod (802) is rotated, and at the same time, the moving rod (303) is pushed to move downward, and the moving rod (303) is inserted into the limiting hole (301) for limiting.

2. An arthroscopic suture implant according to claim 1, characterized in that: The sliding mechanism (2) comprises two groups of guide rails (201) fixedly connected to the top of the bottom plate (1), and each group of guide rails (201) is two in number. The bottom of each movable plate group is provided with a guide groove (202), and the guide rails (201) are inserted into the guide groove (202).

3. An arthroscopic suture implant according to claim 1, characterized in that: The first limiting mechanism (4) comprises a first limiting rod (401) and a second limiting rod (402) fixedly connected to the side wall of the movable plate assembly.

4. The arthroscopic suture implant according to claim 1, characterized in that: The guide mechanism (6) comprises a support plate (601) fixedly connected to the side wall of the moving plate group, the side wall of the support plate (601) being connected to two symmetrically arranged T-shaped guide rods (602) via a resistance mechanism (7), and one end of the T-shaped guide rod (602) being fixed to the side wall of the moving block (503).

5. An arthroscopic suture implant according to claim 4, characterized in that: The resistance mechanism (7) comprises two symmetrically arranged mounting holes (701) opened on the side wall of the support plate (601), a circular ring (702) is fixedly inserted in the mounting hole (701), and a T-shaped guide rod (602) is inserted in the circular ring (702).

6. The arthroscopic suture implant according to claim 1, characterized in that: The connection mechanism (8) comprises a disc (801) fixedly connected to the top of the moving rod (303), and a connecting rod (802) is connected between the disc (801) and the moving block (503) via a rotating mechanism (9).

7. An arthroscopic suture implant according to claim 6, characterized in that: The rotating mechanism (9) comprises a first connecting block (901) fixedly connected to the side wall of the moving block (503), and a second connecting block (902) fixedly connected to the top of the disc (801), the upper end of the connecting rod (802) is rotatably connected to the side wall of the first connecting block (901) via a first rotating shaft (903), and the lower end of the connecting rod (802) is rotatably connected to the side wall of the second connecting block (902) via a second rotating shaft (904).

8. The arthroscopic suture implant according to claim 1, characterized in that: The indicating mechanism (10) comprises a pointer (1002) fixedly connected to the side wall of the movable plate group, and two scales (1001) are fixedly connected to the top of the bottom plate (1).

Images