Winged anchor
By designing the nail body, fixing wings and reinforcement ring with wing anchors, the problems of low assembly efficiency and insufficient pull-out resistance in the prior art are solved, and the anchors are stable and efficiently implanted in the bones are achieved.
Patent Information
- Application Number
- CN202421184347.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-28
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-05-28
AI Technical Summary
Existing winged anchors have problems such as inefficiency and insufficient removal resistance during assembly and use, resulting in an increased risk of surgical failure.
A winged anchor is designed, which includes a nail body body, a fixed wing and a reinforcement ring. The nail body body consists of two cylinders with different diameters. The fixed wing is arranged in one piece by a plurality of fixing rods. The reinforcement ring sleeve is arranged outside the mounting section, and the first and second steps are arranged on the outer wall to enhance friction.
Through this design, the anchor automatically expands when the anchor is implanted into the bone, which enhances the anchor's resistance to pull-out and stability, reduces the risk of surgery, and improves the surgical efficiency.
Smart Images
Figure CN222708301U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of medical devices, and in particular to a winged anchor. Background Art
[0002] Suture anchors are a type of fixation device commonly used in surgical operations to connect soft tissues such as tendons and ligaments to bones. They are mostly used in joints such as shoulders, knees, ankles, and fingers. Winged anchors are currently used clinically as a fixation device used in medical operations, especially in orthopedics and some soft tissue repair surgeries. Winged anchors are provided with fixed wings, which can provide additional stability and support when the anchor is implanted in the body's tissues, helping to facilitate the treatment process. During the production and preparation of winged anchors, each fixed wing needs to be assembled one by one, which is inefficient. Problems in assembly will cause the anchor to fail.
[0003] For example, an anchor provided with expansion wings. The main technical principle of this patent is to arrange the anchor body, through hole, avoidance groove and expansion wing body, and utilize the special integrated structural design of the expansion wing body, so that the anchor body can be implanted into bone tissue quickly and easily. After the anchor body is implanted into bone tissue, the elastic wings in the expansion wing body will automatically pop open, which greatly increases the reliability and anti-pullout ability of the anchor body implantation, shortens the operation time, reduces the operation risk, and alleviates the patient's pain.
[0004] The above-mentioned anchor solves the efficiency and quality problems during anchor assembly by providing an integrated expansion wing body that cooperates with the anchor body, thereby improving the reliability of anchor body implantation and the ability to resist pull-out. However, when the expansion wing body is subjected to excessive force, it is easy to be pulled out, resulting in surgical failure. Utility Model Content
[0005] In order to further improve the pull-out resistance of the winged anchor and reduce surgical risks, the present application provides a winged anchor.
[0006] The winged anchor provided in this application adopts the following technical solution:
[0007] A winged anchor, comprising:
[0008] The nail body is configured as two cylindrical sections with different diameters, including an embedding section and a mounting section, wherein the diameter of the embedding section is larger than the diameter of the mounting section, and a through hole is provided at the end of the mounting section for the suture to pass through;
[0009] The fixed wing is formed by a plurality of fixing rods in an integrated manner. A mounting groove for placing the fixing rod is formed on a side of the embedded section close to the mounting section. A mounting hole connected to the mounting groove is formed on an end of the embedded section away from the mounting section. The fixing rod passes through the mounting hole and is placed in the mounting groove.
[0010] A reinforcement ring is sleeved on the outside of the installation section, a first step is arranged on the outer side wall of the reinforcement ring, a second step is arranged on the inner side wall of the reinforcement ring, and a groove matching the second step is arranged on the outer surface of the installation section.
[0011] By adopting the above technical scheme, when the winged anchor is used for fixation during surgery, the fixing wing is first installed on the nail body before use, a bone tunnel of appropriate size is drilled on the bone where the anchor needs to be implanted, and the nail body and the fixing wing are implanted into the bone tunnel using an inserter. After reaching the predetermined position, the inserter is pulled out. At this time, the anchor is subjected to the external force of the sutures passed through the through hole by the inserter, and the fixing wing expands outward and penetrates into the bone to complete the fixation of the anchor. After that, the reinforcement ring is knocked into the bone tunnel and sleeved on the installation section to further fix the anchor, increase the support strength after the anchor is implanted, and enable the anchor to withstand greater external force. At the same time, a second step is provided on the inner side wall of the reinforcement ring, and a card slot is provided on the outer surface of the installation section. After the reinforcement ring is installed, the second step is stuck in the card slot to prevent the reinforcement ring from falling off from the installation section. At the same time, a first step is provided on the outer side wall of the reinforcement ring, and the first step abuts against the bone tunnel to increase the friction between the reinforcement ring and the bone tunnel, further improve the anti-pullout ability of the anchor, and reduce the surgical risk.
[0012] Preferably, the first step is arranged in a ring shape along the outer wall of the reinforcement ring, and multiple steps are arranged along the axial direction of the reinforcement ring. The cross-section of the first step is triangular, including a vertical surface perpendicular to the axis of the reinforcement ring, and an inclined surface inclined to the axis of the reinforcement ring. The angle between the inclined surface and the axis of the reinforcement ring is set to 30°-45°.
[0013] By adopting the above technical solution, the cross section of the first step is set to a triangle, and one side is perpendicular to the axis of the reinforcement ring, and the other side is inclined to the axis of the reinforcement ring. When the reinforcement ring is knocked into the bone tunnel, the inclined surface is in front and the vertical surface is in the back. The angle between the inclined surface and the axis of the reinforcement ring is 30°-45°, which is convenient for knocking the reinforcement ring into the bone tunnel. When a large pull-out force is received, there is a large friction between the vertical surface of the reinforcement ring and the side wall of the bone tunnel, and the anchor is not easily pulled out, thereby reducing the risk of surgery.
[0014] Preferably, the reinforcement ring is made of high-strength biocompatible material.
[0015] By adopting the above technical solution, the reinforcing ring is made of high-strength biocompatible material, which can withstand various stresses during the operation and has good biocompatibility, ensuring that the patient will not have a rejection reaction after the operation. It can further improve the safety and reliability of the winged anchor in clinical applications and reduce surgical risks.
[0016] Preferably, the fixing wing is made of memory metal, and the fixing rod is embedded in the medullary canal and then expands outward to penetrate into the bone.
[0017] By adopting the above technical solution, the fixed wing is made of memory metal. When the fixed wing is embedded in the bone tunnel along with the nail body, the fixed rod of the fixed wing is located in the installation groove. When it reaches the predetermined position, the end of the fixed rod expands outward and penetrates into the bone. The end of the fixed rod can be inserted into the inner wall of the bone tunnel to support the anchor in the medullary canal. After insertion, the fixed rod is firmly fixed and has a strong supporting force, which improves the anti-pullout ability of the anchor and reduces the surgical risk.
[0018] Preferably, a chamfered surface is provided at the end of the fixing rod, and an angle between the chamfered surface and the axis of the end of the fixing rod is set to 15°-25°.
[0019] By adopting the above technical solution, a bevel is provided at the end of the fixing rod, and the angle between the bevel and the axis of the end of the fixing rod is set to 15°-25°, so that the end of the fixing rod becomes a sharper end. When the fixing rod is inserted into the inner wall of the bone tunnel, it is convenient to insert the fixing rod into the inner wall of the bone tunnel, and it is more convenient to fix the anchor nail.
[0020] Preferably, the chamfered surface is configured as a friction surface.
[0021] By adopting the above technical solution, the beveled surface is set as a friction surface, which enhances the gripping force between the fixing wing and the bone, prevents the loosening and displacement of the anchor, and enables it to form a stronger bond when in contact with the bone, so as to achieve the best fixation effect and improve the stability of the anchor.
[0022] Preferably, the number of the fixing rods is no less than three.
[0023] By adopting the above technical solution, when the anchor is fixed after expansion by the fixing rod, the fixing rod is inserted into the inner wall of the bone tunnel, and no less than three fixing rods are set. The anchor is supported by at least three fixing rods on the inner wall of the bone tunnel, which makes the anchor more stable and further reduces the surgical risk.
[0024] Preferably, a groove is provided at the end of the embedding section away from the mounting section, and a protrusion matching with the groove is provided at the inner side of the fixed wing head.
[0025] By adopting the above technical solution, the fixed wing is inserted into the mounting groove from the mounting hole opened in the embedded section. By setting a groove at the end of the embedded section and setting a protrusion on the inner side of the head of the fixed wing, the protrusion is installed in the groove. The groove and the protrusion on the head of the fixed wing are precisely matched to ensure that the fixed wing can be firmly installed on the nail body, prevent the fixed wing from loosening, and thereby improve the overall stability of the anchor nail.
[0026] In summary, the present application includes at least one of the following beneficial technical effects:
[0027] 1. When the winged anchor is used for fixation during surgery, the fixing wing is installed on the nail body before use, a bone tunnel of appropriate size is drilled on the bone where the anchor is to be implanted, and the nail body and the fixing wing are implanted into the bone tunnel using an inserter. After reaching the predetermined position, the inserter is pulled out. At this time, the anchor is subjected to the external force of the suture threaded through the through hole by the inserter, and the fixing wing expands outward and penetrates into the bone to complete the fixation of the anchor. After that, the reinforcing ring is knocked into the bone tunnel and sleeved on the installation section to further fix the anchor, increase the supporting strength after the anchor is implanted, and enable the anchor to withstand greater external force. At the same time, a second step is provided on the inner side wall of the reinforcing ring, and a card slot is provided on the outer surface of the installation section. After the reinforcing ring is installed, the second step is stuck in the card slot to prevent the reinforcing ring from falling off the installation section. At the same time, a first step is provided on the outer side wall of the reinforcing ring, and the first step abuts against the bone tunnel to increase the friction between the reinforcing ring and the bone tunnel, further improving the anti-pullout ability of the anchor and reducing the risk of surgery.
[0028] 2. The cross section of the first step is set to be a triangle, with one side perpendicular to the axis of the reinforcement ring and the other side inclined to the axis of the reinforcement ring. When the reinforcement ring is knocked into the bone tunnel, the inclined surface is in front and the vertical surface is in the back. The angle between the inclined surface and the axis of the reinforcement ring is 30°-45°, which is convenient for knocking the reinforcement ring into the bone tunnel. When a large pull-out force is received, there is a large friction between the vertical surface of the reinforcement ring and the side wall of the bone tunnel, and the anchor is not easy to be pulled out, reducing the risk of surgery;
[0029] 3. The beveled surface is set as a friction surface to enhance the grip between the fixation wing and the bone, prevent the loosening and displacement of the anchor, and enable it to form a stronger bond when in contact with the bone to achieve the best fixation effect and improve the stability of the anchor. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] Figure 1 This is a schematic diagram of a winged anchor structure of the present application.
[0031] Figure 2 This is an exploded view of a winged anchor.
[0032] Figure 3 It is a reinforced ring cross-sectional view.
[0033] Explanation of the accompanying drawings: 1. Nail body; 11. Embedding section; 111. Mounting groove; 112. Mounting hole; 113. Groove; 12. Mounting section; 121. Through hole; 122. Slot; 2. Fixed wing; 21. Fixed rod; 211. Beveled surface; 22. Protrusion; 3. Reinforcement ring; 31. First step; 311. Vertical surface; 312. Inclined surface; 32. Second step; 4. Inserter. DETAILED DESCRIPTION
[0034] The following is combined with Figure 1-3 This application is described in further detail.
[0035] The present application embodiment discloses a winged anchor. Figure 1 The winged anchor comprises a nail body 1, a fixing wing 2 and a reinforcement ring 3.
[0036] Reference Figure 2 The nail body 1 is configured as two cylinders with different diameters, including an embedding section 11 and a mounting section 12. The diameter of the embedding section 11 is larger than the diameter of the mounting section 12. This design enables the anchor to be more firmly fixed when implanted in a bone tunnel. A through hole 121 for the suture to pass through is provided at the end of the mounting section 12. The through hole 121 is used to guide the suture during surgery so as to connect the anchor to other tissues or instruments. The mounting section 12 is also provided with a processing plane. Specifically, the mounting section 12 is flattened at a relative position to facilitate machining of the nail body 1.
[0037] The fixed wing 2 is integrated with a plurality of fixing rods 21, and the fixing rods 21 are specifically provided with no less than 3, and in this embodiment, the fixing rods 21 are provided with 4, and these fixing rods 21 are placed through the mounting grooves 111 provided on the embedded section 11. Specifically, the side of the embedded section 11 close to the mounting section 12 is provided with the mounting groove 111 for placing the fixing rod 21, and the mounting groove 111 is a long groove, and the end of the embedded section 11 away from the mounting section 12 is provided with a mounting hole 112 connected with the mounting groove 111.
[0038] Specifically, the fixing rod 21 is inserted through the mounting hole 112 and is placed in the mounting groove 111. A groove 113 is provided at the end of the embedding section 11 of the nail body 1 away from the mounting section 12, and a protrusion 22 matching the groove 113 is provided on the inner side of the head of the fixing wing 2. Specifically, the groove 113 is provided as a circular groove, and the protrusion 22 is provided as a cylinder matching the circular groove. The groove 113 is precisely matched with the protrusion 22 of the head of the fixing wing 2, ensuring that the fixing wing 2 can be firmly installed on the nail body, preventing the fixing wing 2 from loosening, and thus improving the overall stability of the anchor.
[0039] The fixing wing 2 is made of memory metal. The characteristics of memory metal enable the fixing wing 2 to deform when the nail body 1 is inserted into the bone tunnel, and return to its original shape after reaching the predetermined position, thereby achieving the effect of automatic expansion and piercing into the bone. This design further simplifies the surgical operation, while enhancing the fixing effect of the anchor and reducing the surgical risk.
[0040] The end of the fixing rod 21 is provided with a chamfered surface 211, and the angle between the chamfered surface 211 and the axis of the end of the fixing rod 21 is set to 15°-25°. When the fixing rod 21 is inserted into the inner wall of the bone tunnel, it is convenient to insert the fixing rod 21 into the inner wall of the bone tunnel, and it is more convenient to fix the anchor. At the same time, the chamfered surface 211 is set as a frictional surface, which enhances the gripping force between the fixing wing 2 and the bone, prevents the loosening and displacement of the anchor, and enables it to form a more solid combination when in contact with the bone, so as to achieve the best fixing effect and improve the stability of the anchor.
[0041] Reference Figure 1 , Figure 3 , the reinforcement ring 3 is sleeved on the outside of the mounting section 12 to increase the support strength and stability of the anchor. The outer wall of the reinforcement ring 3 is provided with a first step 31, and the inner wall is provided with a second step 32. At the same time, the outer surface of the mounting section 12 is also provided with a slot 122 adapted to the second step 32. When the reinforcement ring 3 is sleeved on the mounting section 12, the second step 32 matches the slot 122, thereby preventing the reinforcement ring 3 from falling off the mounting section 12. This structural design not only improves the support strength of the anchor, but also enhances its anti-pullout ability, further ensuring the success of the operation.
[0042] Reference Figure 3 The first step 31 is arranged in an annular manner along the outer wall of the reinforcing ring 3, and a plurality of first steps 31 are arranged along the axis direction of the reinforcing ring 3. The cross section of each first step 31 is triangular, including a vertical surface 311 perpendicular to the axis of the reinforcing ring 3, and an inclined surface 312 inclined to the axis of the reinforcing ring 3. The angle between the inclined surface 312 and the axis of the reinforcing ring 3 is specially set to 30°-45°. Such a design makes it easier to knock the reinforcing ring 3 into the bone tunnel. At the same time, the inclined surface 312 can increase the friction between the reinforcing ring 3 and the bone tunnel, further improving the anti-pullout ability of the anchor.
[0043] The implementation principle of a winged anchor nail in the embodiment of the present application is as follows: when the winged anchor nail is used for fixation during surgery, the fixing wing 2 is first installed on the nail body 1 before use, and a bone tunnel of a suitable size is drilled on the bone where the anchor nail is to be implanted. The nail body 1 and the fixing wing 2 are implanted into the bone tunnel using an inserter 4. After reaching the predetermined position, the inserter 4 is pulled out. At this time, the fixing wing 2 of the anchor nail expands outwards and penetrates into the bone under the external force of the suture thread passed through the through hole 121 by the inserter 4, thereby completing the fixation of the anchor nail. After that, the reinforcing ring 3 is knocked into the bone tunnel and It is sleeved on the installation section 12 to further fix the anchor, increase the supporting strength after the anchor is implanted, and enable the anchor to withstand greater external force. At the same time, a second step 32 is provided on the inner wall of the reinforcing ring 3, and a groove 122 is provided on the outer surface of the installation section 12. After the reinforcing ring 3 is installed, the second step 32 is stuck in the groove 122 to prevent the reinforcing ring 3 from falling off the installation section 12. At the same time, a first step 31 is provided on the outer wall of the reinforcing ring 3, and the first step 31 abuts against the bone tunnel to increase the friction between the reinforcing ring 3 and the bone tunnel, further improve the anti-pullout ability of the anchor, and reduce the surgical risk.
[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A winged anchor, characterized in that: include: A nail body (1), the nail body (1) being configured as two cylindrical sections with different diameters, comprising an embedding section (11) and a mounting section (12), the diameter of the embedding section (11) being larger than the diameter of the mounting section (12), and a through hole (121) for the suture to pass through being provided at the end of the mounting section (12); A fixed wing (2), wherein the fixed wing (2) is integrally formed of a plurality of fixing rods (21), a mounting groove (111) for placing the fixing rod (21) is provided on a side of the embedded section (11) close to the mounting section (12), and a mounting hole (112) connected to the mounting groove (111) is provided on an end of the embedded section (11) away from the mounting section (12), and the fixing rod (21) passes through the mounting hole (112) and is placed in the mounting groove (111); A reinforcement ring (3), the reinforcement ring (3) being sleeved on the outside of the mounting section (12), the outer wall of the reinforcement ring (3) being provided with a first step (31), the inner wall of the reinforcement ring (3) being provided with a second step (32), and the outer surface of the mounting section (12) being provided with a slot (122) adapted to the second step (32).
2. The winged anchor according to claim 1, characterized in that: The first step (31) is arranged in an annular shape along the outer wall of the reinforcement ring (3), and is arranged in plurality along the axial direction of the reinforcement ring (3); the cross section of the first step (31) is triangular, comprising a vertical surface (311) perpendicular to the axis of the reinforcement ring (3), and an inclined surface (312) inclined to the axis of the reinforcement ring (3); the angle between the inclined surface (312) and the axis of the reinforcement ring (3) is set to be 30°-45°.
3. The winged anchor according to claim 2, characterized in that: The reinforcing ring (3) is made of high-strength biocompatible material.
4. The winged anchor according to claim 1, characterized in that: The fixing wing (2) is made of memory metal, and the fixing rod (21) is embedded in the medullary canal and then expands outwards to penetrate into the bone.
5. The winged anchor according to claim 4, characterized in that: The end of the fixing rod (21) is provided with a beveled surface (211), and the angle between the beveled surface (211) and the axis of the end of the fixing rod (21) is set to be 15°-25°.
6. The winged anchor according to claim 5, characterized in that: The chamfered surface (211) is configured as a friction surface.
7. The winged anchor according to claim 4, characterized in that: The number of the fixing rods (21) is no less than three.
8. The winged anchor according to claim 1, characterized in that: A groove (113) is arranged at the end of the embedding section (11) away from the mounting section (12), and a protrusion (22) cooperating with the groove (113) is arranged on the inner side of the head of the fixing wing (2).