Foldable orthopedic implantation titanium plate
By designing a foldable orthopedic implanted titanium plate, the problem of easy dislocation of existing titanium plates is solved, the stability of the acromion fixation is improved, and the risk of recurrent dislocation is reduced.
Patent Information
- Application Number
- CN202421725066.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-19
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-07-19
AI Technical Summary
Existing rectangular titanium plates are prone to dislocation during shoulder dislocation surgery, resulting in failure of acromion fixation and increasing the chance of recurrence of dislocation in patients.
A foldable orthopedic implanted titanium plate is designed, and the two halves of circular titanium plates are connected by a hinge mechanism, and a projection and threading hole are provided at its upper end. It is fixed into a complete circular titanium plate through sutures, increasing the contact area between the titanium plate and the coracoid process and reducing the possibility of displacement.
It improves the fixation stability of the acromion, reduces the possibility of displacement of the titanium plate, and thus reduces the risk of recurrence dislocation in patients.
Smart Images
Figure CN222968637U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of orthopedic instruments, and in particular to a foldable orthopedic implant titanium plate. Background Art
[0002] In shoulder dislocation surgery, a looped titanium plate is usually used to refix the dislocated acromion. In current surgical applications, the titanium plates placed under the coracoid process are all rectangular titanium plates that are convenient for passing through bone tunnels.
[0003] However, the rectangular titanium plate has certain performance defects. As the implantation time increases, the rectangular titanium plate is prone to displacement, resulting in the failure of acromion fixation and increasing the probability of recurrence of dislocation in patients. Therefore, further improvement is needed. Utility Model Content
[0004] In order to improve the stability of acromion fixation, this application provides a foldable orthopedic implant titanium plate.
[0005] The foldable orthopedic implant titanium plate provided by this application adopts the following technical solutions:
[0006] A foldable orthopedic implant titanium plate includes a first titanium plate and a second titanium plate that can be turned over. Both the first titanium plate and the second titanium plate are semi-circular sheets. The first titanium plate and the second titanium plate are connected by a hinge mechanism. Raised portions are convexly provided on the upper end surfaces of the first titanium plate and the second titanium plate. A first threading hole is provided in the raised portion of the first titanium plate, and a second threading hole is provided in the raised portion of the second titanium plate. When the first titanium plate and the second titanium plate are flattened, the two raised portions are spliced to form a limiting convex portion, and the first threading hole and the second threading hole are communicated.
[0007] By adopting the above technical solutions, first pass the suture through the first threading hole and the second threading hole. After drilling holes in the dislocated acromion and coracoid process, use an inserter to place the first titanium plate and the second titanium plate in a folded state along the holes under the coracoid process. Then tighten the suture so that the first titanium plate and the second titanium plate are flattened to form a complete circular titanium plate. After the two raised portions are spliced to form a limiting convex portion, it is inserted into the hole of the coracoid process. The outer upper edges of the first titanium plate and the second titanium plate abut against the lower end surface of the coracoid process, increasing the contact area between the titanium plate and the coracoid process, reducing the possibility of the titanium plate displacement, and thus improving the stability of acromion fixation.
[0008] Preferably, the circumferential diameter covered by the raised portion does not exceed 3 / 4 of the diameter of the semi-circular sheet.
[0009] By adopting the above technical solutions, leaving a margin enables the outer upper edges of the first titanium plate and the second titanium plate to abut against the lower end surface of the coracoid process, increasing the contact area between the titanium plate and the coracoid process, further reducing the possibility of the titanium plate displacement, and thus improving the stability of acromion fixation.
[0010] Preferably, the limiting convex part is a smooth arc spherical surface.
[0011] By adopting the above technical solution, after the first titanium plate and the second titanium plate are flattened, the two protrusions form a smooth arc spherical surface, so that the upper outer diameter of the limiting convex part is small and the lower outer diameter is large, which is convenient for the limiting convex part to be inserted into the hole of the coracoid process.
[0012] Preferably, anti-slip convex strips are provided at the connection between the protrusion and the semi-circular sheet body, and a plurality of anti-slip convex strips are provided and distributed around the axis of the semi-circular sheet body.
[0013] By adopting the above technical solution, the anti-slip convex strips are additionally provided, effectively increasing the friction between the titanium plate and the coracoid process.
[0014] Preferably, the upper surface of the anti-slip convex strip has anti-slip lines.
[0015] By adopting the above technical solution, anti-slip lines are additionally provided on the upper surface of the anti-slip convex strip, further increasing the friction between the anti-slip convex strip and the coracoid process.
[0016] Preferably, a hinge groove is formed in the side wall of the first titanium plate, and the hinge mechanism includes a hinge shaft fixedly penetrating through the hinge groove and a hinge block protruding and fixed on the side wall of the second titanium plate and rotatably sleeved on the hinge shaft.
[0017] By adopting the above technical solution, the first titanium plate and the second titanium plate are hinged through the hinge block and the hinge shaft.
[0018] Preferably, a plurality of hinge grooves are provided, and a plurality of corresponding hinge blocks are provided.
[0019] By adopting the above technical solution, the cooperation of the plurality of hinge grooves and the plurality of hinge blocks improves the rotation stability of the first titanium plate and the second titanium plate.
[0020] Preferably, a wire conduit is fixedly penetrated between the first wire hole and the second wire hole, and the wire conduit is elastically arranged. Under normal conditions, the wire conduit forces the first titanium plate and the second titanium plate to rotate to a flattened state.
[0021] By adopting the above technical solution, the wire conduit is additionally provided, which is convenient for the sutures to pass through and is also convenient for the first titanium plate and the second titanium plate to be flattened and reset after being folded.
[0022] In summary, the utility model has the following beneficial effects:
[0023] 1. First, pass the suture through the first threading hole and the second threading hole. After drilling holes in the dislocated acromion and coracoid process, use an inserter to place the folded first titanium plate and second titanium plate under the coracoid process along the holes. Then, tighten the suture so that the first titanium plate and the second titanium plate flatten to form a complete circular titanium plate. After the two protrusions are spliced to form a limiting convex part, insert it into the hole of the coracoid process. The upper outer edges of the first titanium plate and the second titanium plate abut against the lower end face of the coracoid process, increasing the contact area between the titanium plate and the coracoid process and reducing the possibility of the titanium plate shifting, thereby improving the fixation stability of the acromion.
[0024] 2. After the first titanium plate and the second titanium plate are flattened, the two protrusions form a smooth arc-shaped spherical surface, making the structure of the limiting convex part with a smaller outer diameter at the upper part and a larger outer diameter at the lower part, which is convenient for inserting the limiting convex part into the hole of the coracoid process.
[0025] 3. Anti-slip ridges are added to effectively increase the friction between the titanium plate and the coracoid process. Description of the Drawings
[0026] Figure 1 It is a schematic structural diagram of a foldable orthopedic implant titanium plate in a flattened state in Embodiment 1;
[0027] Figure 2 It is a schematic structural diagram of a foldable orthopedic implant titanium plate in a folded state in Embodiment 1;
[0028] Figure 3 It is a schematic structural diagram of a foldable orthopedic implant titanium plate in a folded state in Embodiment 2.
[0029] In the figure, 1. First titanium plate; 11. Hinge groove; 2. Second titanium plate; 3. Hinge mechanism; 31. Hinge shaft; 32. Hinge block; 4. Protrusion; 41. First threading hole; 42. Second threading hole; 43. Wire conduit; 5. Ring belt; 51. Anti-slip ridge. Detailed Embodiment
[0030] The following further elaborates on this application Figures 1-3 with reference to the attached drawings.
[0031] Embodiment 1:
[0032] This application embodiment discloses a foldable orthopedic implant titanium plate. Refer to Figure 1 , which includes a first titanium plate 1 and a second titanium plate 2 that can be folded. Both the first titanium plate 1 and the second titanium plate 2 are semi-circular sheets, and the first titanium plate 1 and the second titanium plate 2 are connected by a hinge mechanism 3.
[0033] Refer to Figure 2, a hinge groove 11 is formed on the side wall of the first titanium plate 1. There are multiple hinge grooves 11. The hinge mechanism 3 includes a hinge shaft 31 fixedly penetrating through the hinge groove 11 and a hinge block 32 protruding and fixed on the side wall of the second titanium plate 2. There are multiple corresponding hinge blocks 32, and the hinge block 32 is rotatably sleeved on the hinge shaft 31. The first titanium plate 1 and the second titanium plate 2 can be folded by 90° to be perpendicular to each other.
[0034] Protrusions 4 are convexly provided on the upper end surfaces of both the first titanium plate 1 and the second titanium plate 2. A first wire-passing hole 41 is formed in the protrusion 4 of the first titanium plate 1, and a second wire-passing hole 42 is formed in the protrusion 4 of the second titanium plate 2. The first wire-passing hole 41 and the second wire-passing hole 42 are arranged in the area from 1 / 3 to 1 / 2 of the protrusion 4 starting from the arc top. When the first titanium plate 1 and the second titanium plate 2 are flattened, the first wire-passing hole 41 and the second wire-passing hole 42 are communicated, and the two protrusions 4 are spliced to form a limiting convex part. The circumferential diameter covered by the protrusion 4 does not exceed 3 / 4 of the diameter of the semi-circular sheet body, so that the limiting convex part formed by splicing the two protrusions 4 is a smooth arc spherical surface.
[0035] Refer to Figure 1 , a ring belt 5 is provided at the connection between the protrusion 4 and the semi-circular sheet body. Anti-slip ridges 51 are convexly provided on the ring belt 5. There are multiple anti-slip ridges 51 and they are distributed around the axis of the semi-circular sheet body. The upper surface of the anti-slip ridge 51 has anti-slip lines.
[0036] The implementation principle of an implantable foldable orthopedic titanium plate in an embodiment of the present application is as follows: First, pass a suture through the first wire-passing hole 41 and the second wire-passing hole 42. After drilling holes in the dislocated acromion and coracoid process, use an inserter to place the folded first titanium plate 1 and second titanium plate 2 along the holes under the coracoid process. Then, tighten the suture so that the first titanium plate 1 and the second titanium plate 2 are flattened to form a complete circular titanium plate. After the two protrusions 4 are spliced to form a limiting convex part, they are inserted into the hole of the coracoid process. The upper outer edges of the first titanium plate 1 and the second titanium plate 2 abut against the lower end surface of the coracoid process, increasing the contact area between the titanium plate and the coracoid process and reducing the possibility of the titanium plate displacement, thereby improving the fixation stability of the acromion.
[0037] Embodiment 2:
[0038] The difference from Embodiment 1 is that, refer to Figure 3, a wire conduit 43 is fixedly disposed between the first wire passing hole 41 and the second wire passing hole 42. The wire conduit 43 is elastically arranged. Specifically, the wire conduit 43 is a TPU tube. In the normal state, the wire conduit 43 forces the first titanium plate 1 and the second titanium plate 2 to rotate to a flattened state. When a force is applied to the first titanium plate 1 or the second titanium plate 2 such that the first titanium plate 1 and the second titanium plate 2 are folded by 90°, at this time, the wire conduit 43 undergoes elastic deformation and has elastic potential energy. After placing the folded first titanium plate 1 and the second titanium plate 2 under the coracoid process along the hole through an inserter, the inserter is removed, and the elastic reset of the wire conduit 43 forces the first titanium plate 1 and the second titanium plate 2 to rotate to a flattened state, and then the suture is tightened.
[0039] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.
Claims
1. A foldable orthopedic implant titanium plate, characterized in that: The invention comprises a first titanium plate (1) and a second titanium plate (2) which can be folded. The first titanium plate (1) and the second titanium plate (2) are both semicircular sheets. The first titanium plate (1) and the second titanium plate (2) are connected via a hinge mechanism (3). The upper end surfaces of the first titanium plate (1) and the second titanium plate (2) are both provided with a protrusion (4). The protrusion (4) of the first titanium plate (1) is provided with a first threading hole (41), and the protrusion (4) of the second titanium plate (2) is provided with a second threading hole (42). When the first titanium plate (1) and the second titanium plate (2) are flattened, the two protrusions (4) are spliced to form a limiting protrusion, and the first threading hole (41) and the second threading hole (42) are connected.
2. The foldable orthopedic implant titanium plate according to claim 1, characterized in that: The diameter of the circle covered by the protrusion (4) does not exceed 3 / 4 of the diameter of the semicircular sheet.
3. The foldable orthopedic implant titanium plate according to claim 1, characterized in that: The limiting convex portion is a smooth arc-shaped spherical surface.
4. The foldable orthopedic implant titanium plate according to claim 1, characterized in that: An anti-skid convex strip (51) is provided at the connection between the protrusion (4) and the semicircular sheet body, and a plurality of anti-skid convex strips (51) are provided and distributed around the axis of the semicircular sheet body.
5. The foldable orthopedic implant titanium plate according to claim 4, characterized in that: The upper surface of the anti-skid convex strip (51) has anti-skid patterns.
6. The foldable orthopedic implant titanium plate according to claim 1, characterized in that: A hinge groove (11) is formed on the side wall of the first titanium plate (1), and the hinge mechanism (3) comprises a hinge shaft (31) fixedly arranged in the hinge groove (11) and a hinge block (32) protruding from the side wall of the second titanium plate (2) and rotatably sleeved on the hinge shaft (31).
7. The foldable orthopedic implant titanium plate according to claim 6, characterized in that: The hinge grooves (11) are provided in plurality, and the hinge blocks (32) are provided in plurality accordingly.
8. The foldable orthopedic implant titanium plate according to claim 1, characterized in that: A wire tube (43) is fixedly inserted between the first wire threading hole (41) and the second wire threading hole (42). The wire tube (43) is elastically arranged. Under normal conditions, the wire tube (43) forces the first titanium plate (1) and the second titanium plate (2) to rotate to a flattened state.