A combined reinforced implantable screw
By designing a combined reinforced implantable screw including grooves, limit notches, reinforcement edges and threading holes, the problem of the inability of the prior art to effectively suture the soft tissue around the joint is solved, and the simplification of surgical operations and reduction of risks is achieved.
Patent Information
- Application Number
- CN202421323456.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-12
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-06-12
AI Technical Summary
When existing locking anchors are treated with fractures close to the joint, they cannot effectively suture the soft tissue around the joint, resulting in complex surgical operations and increasing surgical risks.
A combined reinforced implantable screw is designed, including a nail body and a nail cap, with grooves, limit notches, reinforcement edges and threading holes on the nail cap. Through these structures, the suture or bundle is limited and fixed, and the effective suture of the soft tissue around the joint is achieved.
This technology effectively simplifies surgical operations, reduces surgical risks, and improves the quality of patients' postoperative recovery.
Smart Images
Figure CN222737975U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of medical devices, and in particular to a combined reinforced implantable screw. Background Art
[0002] Currently, in the medical field, with the continuous improvement of surgical techniques and the continuous improvement of implant design, there are continuous technical breakthroughs in the surgery of comminuted shaft fractures.
[0003] Currently, in comminuted shaft fracture surgery, metal cables, steel wires and other binding materials are often used to reposition and bind the displaced bone fragments, and locking anchors with a hollow shaft or a groove in the shaft are used to fix the bone fragments.
[0004] The above-mentioned prior art solutions have the following defects: when treating fractures near the joint, the existing locking anchors cannot effectively suture the soft tissue around the joint, so when the surgery is performed with the binding material, the operation becomes complicated and the surgical risk is increased. Utility Model Content
[0005] In order to effectively suture the soft tissue around the joint, simplify the surgical operation and reduce the surgical risk when treating periarticular fractures, the present application provides a combined reinforced implantable screw.
[0006] The above technical objectives of this application are achieved through the following technical solutions:
[0007] A combined reinforced implantable screw comprises a nail body and a nail cap located at one end of the nail body, two grooves are arranged at intervals on the end of the nail cap away from the nail body, and two limiting notches are arranged on the nail cap, and the limiting notches are respectively connected to the outside of the nail cap and the grooves;
[0008] A reinforcing ridge is formed between the two grooves, and threading holes are provided on the reinforcing ridge with two ends respectively connected to the two grooves.
[0009] By adopting the above technical solution, the end of the suture or binding is placed in the limiting notch and then inserted into the threading hole. The suture or binding is located in the limiting notch, which can not only limit it and effectively control the broken bones to return to their original position, but also facilitate the suture or binding to sew the soft tissue around the joint, effectively simplifying the surgical operation process, greatly reducing the surgical risk, and also facilitating the patient's postoperative recovery.
[0010] Optionally, two ends of the threading hole are respectively arranged opposite to two limiting notches.
[0011] By adopting the above technical solution, it is easy to align the end portion with the threading hole, simplifying the operation process and facilitating subsequent operations.
[0012] Optionally, the edges of the groove, the edges of the limiting notch, and the edges of the threading hole are all processed to form chamfers.
[0013] By adopting the above technical solution, the chamfer is relatively rounded, and when the suture or the bundle is inserted into the nail cap, it is not easy to form an obstruction to the suture or the bundle, and the suture or the bundle can be protected.
[0014] Optionally, the nail cap is in a truncated cone shape, an end of the nail cap with a smaller diameter is connected to the nail body, and a second thread is formed on the outer wall of the nail cap.
[0015] By adopting the above technical solution, when the nail body is completely screwed into the bone, the second thread facilitates the continued screwing of the nail cap, which can improve the stability of the connection between the screw and the bone, and can also effectively reduce the vertical height between the nail cap and the soft tissue around the joint, thereby facilitating the subsequent suturing of the soft tissue around the joint.
[0016] Optionally, the end surface of the nail cap facing away from the nail body is processed to form a convex surface.
[0017] By adopting the above technical solution, compared with a flat surface, when the nail cap is screwed into the broken bone, the fit between the end face of the nail cap and the soft tissue around the joint can be improved, thereby facilitating the patient's postoperative recovery.
[0018] Optionally, one end of the nail body away from the nail cap is processed to form a conical tip, and a guide groove is formed on the conical surface of the tip.
[0019] By adopting the above technical solution, the guide groove can not only enhance the sharpness of the nail body tip, which is beneficial for the nail body to be implanted into the broken bone, but also, during the process of the nail body being screwed into the bone, the bone chips generated from the bone can be discharged outwards through the guide groove, which is further beneficial for the nail body to be implanted into the bone.
[0020] Optionally, the combined reinforced implantable screw also includes a wrench, which includes a rod body, a first plug-in portion and a second plug-in portion fixedly arranged on an end surface of one end of the rod body, and the first plug-in portion and the second plug-in portion can be inserted into the limiting notch and the groove respectively.
[0021] By adopting the above technical solution, the rod body with a certain length can effectively extend the operating space during the screwing process, which is convenient for the staff to screw the screw into the broken bone.
[0022] Optionally, two of the first plug-in portion and two of the second plug-in portion are respectively formed.
[0023] By adopting the above technical solution, the two sets of plug-in parts can increase the contact area between the wrench and the nail nut, thereby improving the operational stability when using the wrench to tighten the screw.
[0024] Optionally, the combined reinforced implantable screw further includes a positioning member, which includes a positioning ring and a plurality of positioning protrusions fixed to the positioning ring.
[0025] By adopting the above technical solution, after the positioning protrusion is pre-set on the broken bone, the screw body is then placed inside the positioning collar, which effectively simplifies the operation process and facilitates the subsequent screwing-in work.
[0026] Optionally, the positioning protrusion is trapezoidal, the width of the positioning protrusion on a side away from the positioning collar is smaller than the width of the positioning protrusion on a side close to the positioning collar, and the side of the positioning protrusion with a smaller width is processed into an arc shape.
[0027] By adopting the above technical solution, the arc shape is conducive to the pre-positioning of the positioning protrusion on the broken bones and will not cause damage to the broken bones.
[0028] In summary, this application has the following technical effects:
[0029] 1. By setting the groove, limiting notch, reinforcing ridge and threading hole, the suture or binding is located in the limiting notch, which can not only limit it, effectively control the bone fragments to return to their original position, but also facilitate the suture or binding to sew the soft tissue around the joint, effectively simplify the operation process of the operation, and greatly reduce the risk of the operation, and also facilitate the patient's postoperative recovery;
[0030] 2. By setting the end of the threading hole and the limiting notch to be opposite to each other, it is convenient to align the end with the threading hole opening, simplify the operation process and facilitate subsequent operations;
[0031] 3. The edges are processed to form chamfers, so that when the sutures or bundles are inserted into the nail cap, the sutures or bundles are not easily blocked and can be protected. BRIEF DESCRIPTION OF THE DRAWINGS
[0032] Figure 1 It is the appearance structure diagram of this application;
[0033] Figure 2 This is the structure diagram after this application is opened;
[0034] Figure 3 This is a structural diagram from another angle after this application is opened.
[0035] Explanation of the accompanying drawings: 1. nail body; 11. first thread; 12. guide groove; 2. nail cap; 21. second thread; 22. groove; 23. limiting notch; 3. reinforcing edge; 31. threading hole; 4. wrench; 41. rod body; 42. first plug-in part; 43. second plug-in part; 44. handle; 5. positioning piece; 51. positioning ring; 52. positioning protrusion. DETAILED DESCRIPTION
[0036] The present application is further described in detail below in conjunction with the accompanying drawings.
[0037] Embodiment 1
[0038] The present application embodiment discloses a combined reinforced implantable screw, referring to Figure 1 The combined reinforced implantable screw includes a nail body 1 and a nail cap 2 located at one end of the nail body 1 and integrally formed with the nail body 1. A first thread 11 is formed on the circumferential surface of the nail body 1, and a conical tip is formed at one end of the nail body 1 away from the nail cap 2, and a guide groove 12 is provided on the conical surface of the tip. In this embodiment, three guide grooves 12 are provided and are evenly arranged at equal angles around the axial direction of the nail body 1. The guide groove 12 can not only enhance the sharpness of the tip of the nail body 1, which is beneficial for the implantation of the nail body 1 into the broken bone, but also, in the process of the nail body 1 being screwed into the bone, the bone chips generated from the bone can be discharged outwardly through the guide groove 12, which is further beneficial for the implantation of the nail body 1 into the bone.
[0039] Reference Figure 1 The nail cap 2 is in a truncated cone shape, and the diameter of the end with a smaller diameter of the nail cap 2 is the same as that of the nail body 1, and is integrally connected with the nail body 1. A second thread 21 is formed on the outer wall of the nail cap 2. When the screw is implanted into the broken bone, after the nail body 1 is completely screwed into the bone, the second thread 21 facilitates the nail cap 2 to continue to be screwed in, which can improve the stability of the connection between the screw and the bone, and can also effectively reduce the vertical height between the nail cap 2 and the soft tissue around the joint, thereby facilitating the subsequent suturing of the soft tissue around the joint.
[0040] Reference Figure 1 The end face of the nail cap 2 with a larger diameter is processed to form a convex surface. Compared with the flat surface, when the nail cap 2 is screwed into the broken bone, the convex surface can improve the fit between the end face of the nail cap 2 and the soft tissue around the joint, thereby facilitating the patient's postoperative recovery.
[0041] Reference Figure 1Two grooves 22 are arranged at intervals on the convex end of the nail cap 2. The two grooves 22 are arranged symmetrically with respect to the axis of the nail body 1, and a reinforcing ridge 3 is formed between the two grooves 22. The notch of the groove 22 is semicircular, and the straight edges of the two grooves 22 are parallel and close to each other; the semicircular edge of the groove 22 is concentric with the edge of the nail cap 2, and the semicircular edge of the groove 22 is arranged at intervals with the edge of the nail cap 2. Two limiting notches 23 are arranged on the nail cap 2, and the limiting notches 23 are connected to the outside of the nail cap 2 and the groove 22 respectively. The two limiting notches 23 are arranged symmetrically with respect to the length direction of the reinforcing ridge 3, and the bottom of the limiting notch 23 is processed into an arc surface. A threading hole 31 is arranged on the reinforcing ridge 3, and the two ends of the threading hole 31 are connected to the two grooves 22 respectively, and the orifice of the threading hole 31 is arranged opposite to the limiting notch 23. In this embodiment, the edges of the groove 22, the edges of the limiting notch 23, and the edges of the threading hole 31 are all processed to form chamfers, and the chamfers are relatively rounded. When the sutures or bindings are passed through the nail cap 2, they are not easily blocked and can also protect the sutures or bindings.
[0042] During the operation, the groove 22 formed on the nail cap 2 is convenient for the staff to use tools to screw the screw into the bone. When the nail cap 2 is close to the soft tissue around the joint, when using sutures or bindings, the ends of the sutures or bindings can be placed in the limiting notch 23 and then inserted into the threading hole 31. The sutures or bindings are located in the limiting notch 23, which can not only limit them, but also facilitate the alignment of their ends with the openings of the threading hole 31, which is convenient for subsequent operations. The sutures or bindings are inserted into the threading hole 31, which can not only facilitate the synchronous suturing of the sutures and the soft tissue around the joint, but also the sutures or bindings located in the threading hole 31 can be restricted by the threading hole 31, reducing the possibility of the sutures or bindings being offset, thereby improving the suturing quality of the soft tissue around the joint.
[0043] Reference Figure 2 The combined reinforced implantable screw also includes a wrench 4 used in conjunction with the screw body, the wrench 4 includes a rod body 41, a first plug-in portion 42 and a second plug-in portion 43 integrally formed on one end surface of the rod body 41, and a handle 44 integrally formed and arranged on the other end surface of the rod body 41. In this embodiment, the rod body 41 is a round rod, and the handle 44 is C-shaped and connected to the rod body 41 at both ends. The first plug-in portion 42 and the second plug-in portion 43 can be inserted into the limiting notch 23 and the groove 22 respectively, and the first plug-in portion 42 and the second plug-in portion 43 are respectively processed and formed in two, so that they can be inserted into the two limiting notches 23 and the two grooves 22 at the same time. The rod body 41 with a certain length can effectively extend the operating space during the screwing process, which is beneficial for the staff to screw the screw into the broken bone. The two sets of plug-in portions can increase the contact area between the wrench 4 and the nail cap 2, thereby improving the operational stability when using the wrench 4 to screw the screw.
[0044] Embodiment 2
[0045] The difference between this embodiment and the first embodiment is that;
[0046] Reference Figure 3 The combined reinforced implantable screw also includes a positioning member 5 that can be movably sleeved on the nail body 1. The positioning member 5 includes a positioning collar 51 and a plurality of positioning protrusions 52 integrally formed on the positioning collar 51. The positioning protrusion 52 is located on a circular ring surface of the positioning collar 51. The plurality of positioning protrusions 52 are sequentially spaced around the circumference of the positioning collar 51. The positioning protrusion 52 is trapezoidal, and the width of the side of the positioning protrusion 52 away from the positioning collar 51 is smaller than the width of the side of the positioning protrusion 52 close to the positioning collar 51. The side of the positioning protrusion 52 with a smaller width is processed into an arc shape. The arc shape is conducive to the pre-positioning of the positioning protrusion 52 on the broken bone and will not cause damage to the broken bone. Then, after the screw body is placed inside the positioning collar 51, it is convenient for subsequent screwing-in work.
[0047] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.
Claims
1. A combined reinforced implantable screw, characterized in that: The nail cap (2) comprises a nail body (1) and a nail cap (2) located at one end of the nail body (1), two grooves (22) are arranged at intervals on the end of the nail cap (2) away from the nail body (1), and two limiting notches (23) are arranged on the nail cap (2), and the limiting notches (23) respectively connect the outside of the nail cap (2) and the grooves (22); A reinforcing ridge (3) is formed between the two grooves (22), and threading holes (31) are provided on the reinforcing ridge (3) with two ends respectively connected to the two grooves (22).
2. The combined reinforced implantable screw according to claim 1, characterized in that: The two ends of the threading hole (31) are respectively arranged opposite to the two limiting notches (23).
3. A combined reinforced implantable screw according to claim 2, characterized in that: The edges of the groove (22), the edges of the limiting notch (23), and the edges of the openings of the threading holes (31) are all processed to form chamfers.
4. A combined reinforced implantable screw according to claim 1 or 3, characterized in that: The nail cap (2) is in the shape of a truncated cone, and the end of the nail cap (2) with a smaller diameter is connected to the nail body (1), and a second thread (21) is formed on the outer wall of the nail cap (2).
5. The combined reinforced implantable screw according to claim 4, characterized in that: The end surface of the nail cap (2) facing away from the nail body (1) is processed to form a convex surface.
6. The combined reinforced implantable screw according to claim 1, characterized in that: The end of the nail body (1) away from the nail cap (2) is processed to form a conical tip, and a guide groove (12) is provided on the conical surface of the tip.
7. A combined reinforced implantable screw according to any one of claims 1 to 6, characterized in that: The combined reinforced implantable screw also includes a wrench (4), the wrench (4) including a rod body (41), a first plug-in portion (42) and a second plug-in portion (43) fixedly arranged on an end surface of one end of the rod body (41), the first plug-in portion (42) and the second plug-in portion (43) being respectively insertable into the limiting notch (23) and the groove (22).
8. The combined reinforced implantable screw according to claim 7, characterized in that: The first plug-in portion (42) and the second plug-in portion (43) are respectively processed and formed into two.
9. The combined reinforced implantable screw according to claim 7, characterized in that: The combined reinforced implantable screw also includes a positioning member (5), wherein the positioning member (5) includes a positioning collar (51) and a plurality of positioning protrusions (52) fixedly connected to the positioning collar (51).
10. The combined reinforced implantable screw according to claim 9, characterized in that: The positioning protrusion (52) is trapezoidal in shape, the width of the side of the positioning protrusion (52) away from the positioning collar (51) is smaller than the width of the side of the positioning protrusion (52) close to the positioning collar (51), and the side of the positioning protrusion (52) with a smaller width is processed into an arc shape.