Reverse shoulder locking structure

Abstract

The utility model discloses a reverse shoulder locking structure which comprises a humerus handle, a supporting cover is arranged on the humerus handle, a lining assembly is arranged on the supporting cover, a first connecting assembly is arranged on the supporting cover, a first guiding assembly is arranged on the first connecting assembly, a second connecting assembly is arranged on the lining assembly, and a second guiding assembly is arranged on the second connecting assembly. And a second guide assembly is arranged on the second connecting assembly. The shoulder joint supporting cover has the advantages that according to the technical scheme, the situation that a lining or a tray in a shoulder joint product is not clamped tightly to cause looseness and dislocation is effectively made up, the supporting cover can be added to increase the thickness and the offset when the offset is not enough in an operation, the operation difficulty is effectively simplified, and the operation time is shortened.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of shoulder joint of orthopedics department, especially a reverse shoulder locking structure. BACKGROUND

[0002] With the aggravation of global population aging, the number of patients with shoulder joint diseases is increasing year by year. The elderly are more likely to be troubled by shoulder joint degeneration, osteoarthritis and other diseases. Changes in modern lifestyle, such as increased work pressure, lack of exercise, long-term maintenance of poor posture, etc., have led to a rising incidence of shoulder joint diseases. With the continuous progress of medical technology, the treatment effect and surgical safety of shoulder joint surgery are continuously improved. This makes more patients willing to choose surgical treatment, and the above factors further promote the growth of shoulder joint surgery demand. A series of adverse conditions or complications may occur during or after shoulder joint replacement surgery. These adverse events may include but are not limited to prosthesis loosening, dislocation and other conditions. SUMMARY

[0003] The utility model aims at solving the above -mentioned problem, designs a reverse shoulder locking structure.

[0004] To achieve the above-mentioned purpose, the technical scheme of the utility model is a reverse shoulder locking structure, which comprises a humeral stem, a cover is arranged on the humeral stem, an inner lining assembly is arranged on the cover, a first connecting assembly is arranged on the cover, a first guide assembly is arranged on the first connecting assembly, a second connecting assembly is arranged on the inner lining assembly, and a second guide assembly is arranged on the second connecting assembly.

[0005] As a further description of the technical scheme, the inner lining assembly comprises an inner lining body, and a concave joint surface is arranged on the inner lining body.

[0006] As a further description of the technical scheme, a first auxiliary clamping groove is arranged on the humeral stem, and a second auxiliary clamping groove is arranged on the cover away from the first connecting assembly.

[0007] As a further description of the technical scheme, the first connecting assembly comprises a first connecting body arranged on the cover, a first connecting clamping groove is arranged on the first connecting body, and a connecting stop ring is arranged on the first connecting clamping groove.

[0008] As a further description of the technical scheme, the second connecting assembly comprises a second connecting body arranged on the inner lining assembly, a second connecting clamping groove is arranged on the second connecting body, and a connecting stop ring is arranged on the second connecting clamping groove.

[0009] As a further description of this technical solution, the first connecting component includes a first connecting cone ligand disposed on the cover, and the second connecting component includes a second connecting cone ligand disposed on the liner component.

[0010] As a further description of this technical solution, a first limiting hole is provided on the humeral stem, and the first guide assembly includes a first guide post disposed on the first connecting assembly, the first guide post being disposed within the first limiting hole.

[0011] As a further description of this technical solution, the cover is provided with a second limiting hole, and the second guide component includes a second guide post disposed on the second connecting component, the second guide post being disposed within the second limiting hole.

[0012] Its beneficial effects are that this technical solution effectively compensates for the loosening and misalignment caused by the lining or tray not fitting tightly in shoulder joint products. When the displacement is insufficient during surgery, a cover can be added to increase the thickness and displacement, effectively simplifying the operation and reducing the operation time. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the installation structure of the inner liner body, the cover, and the humeral stem according to Embodiment 1 of this utility model;

[0014] Figure 2 This is a schematic diagram of the installation structure of the inner liner body, the cover, and the humeral stem according to the second embodiment of this utility model;

[0015] Figure 3 This is a schematic diagram of the installation structure of the inner liner body, the cover, and the humeral stem according to Embodiment 3 of this utility model.

[0016] In the figure, 1. Humeral stem; 2. Cover; 3. Liner assembly; 4. First connecting assembly; 5. First guide assembly; 6. Second connecting assembly; 7. Second guide assembly; 8. Liner body; 9. Concave articular surface; 10. First auxiliary slot; 11. Second auxiliary slot; 12. First connector; 13. First connecting slot; 14. Second connector; 15. Second connecting slot; 16. Connecting retaining ring; 17. First connecting cone ligand; 18. Second connecting cone ligand; 19. First limiting hole; 20. First guide post; 21. Second limiting hole; 22. Second guide post. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings, such as... Figure 1 As shown, a reverse shoulder locking structure includes a humeral stem 1, on which a first auxiliary slot 10 is provided, and on the support cover 2, a second auxiliary slot 11 is provided at the end away from the first connecting component 4.

[0018] The humeral stem 1 is provided with a cover 2, and the cover 2 is provided with an inner liner assembly 3. The inner liner assembly 3 will be described in detail below. The inner liner assembly 3 includes an inner liner body 8, and the inner liner body 8 is provided with a concave articular surface 9.

[0019] A first connecting component 4 is provided on the cover 2. The first connecting component 4 will be described in detail below. The first connecting component 4 includes a first connecting body 12 provided on the cover 2, a first connecting slot 13 provided on the first connecting body 12, and a connecting retaining ring 16 provided on the first connecting slot 13; the first connecting component 4 also includes a first connecting conical ligand 17 provided on the cover 2.

[0020] A first guide component 5 is provided on the first connecting component 4. The first guide component 5 will be described in detail below. A first limiting hole 19 is provided on the humeral stem 1. The first guide component 5 includes a first guide post 20 provided on the first connecting component 4. The first guide post 20 is disposed in the first limiting hole 19.

[0021] A second connecting component 6 is provided on the inner lining component 3. The second connecting component 6 will be described in detail below. The second connecting component 6 includes a second connecting body 14 provided on the inner lining component 3, a second connecting slot 15 provided on the second connecting slot 14, and a connecting retaining ring 16 provided on the second connecting slot 15; the second connecting component 6 also includes a second connecting cone ligand 18 provided on the inner lining component 3.

[0022] A second guide component 7 is provided on the second connecting component 6. The second guide component 7 will be described in detail below. A second limiting hole 21 is provided on the cover 2. The second guide component 7 includes a second guide post 22 provided on the second connecting component 6. The second guide post 22 is disposed in the second limiting hole 21.

[0023] There are three installation methods for the humeral stem 1, the support 2, and the inner liner assembly 3, which will be described in detail below:

[0024] Method 1: such as Figure 1 As shown, the inner liner body 8 and the cover 2, the cover 2 and the humeral stem 1, and the inner liner and the humeral stem 1 are all secured by retaining rings. During installation, first, the two retaining rings are inserted into the first auxiliary slot 10 and the second auxiliary slot 11 respectively; then, the cover 2 is pressed into the humeral stem 1; at this time, the first connecting slot 13 on the first connecting body 12 is connected to the retaining ring in the first auxiliary slot 10, and then the inner liner body 8 is installed into the cover 2. The second connecting slot 15 on the second connecting body 14 is connected to the connecting retaining ring 16 in the second auxiliary slot 11, thereby realizing the installation of the inner liner body 8, the cover 2, and the humeral stem 1. When the eccentricity is insufficient, the cover 2 is added to increase the eccentricity.

[0025] Method 2: as shown in Figure 2 The inner liner body 8 is conically clamped with the cover 2, the cover 2 is clamped with the humeral stem 1, and the inner liner body 8 is clamped with the humeral stem 1. When installing, first knock the cover 2 into the humeral stem 1 to clamp, the first connecting conical body 17 on the cover 2 is clamped in the first auxiliary clamping groove 10, then knock the inner liner body 8 into the tray, the second connecting conical body 18 on the inner liner body 8 is clamped in the second auxiliary clamping groove 11, so as to realize the installation of the inner liner body 8, the cover 2 and the humeral stem 1.

[0026] Method 3: as shown in Figure 3 The installation mode of the inner liner body 8 and the cover 2 and the inner liner body 8 and the humeral stem 1 is clamping groove locking; the locking mode of the cover 2 and the humeral stem 1 is conical clamping, when installing, first knock the cover 2 into the humeral stem 1, the first connecting conical body 17 on the cover 2 is clamped in the first auxiliary clamping groove 10, then press the inner liner body 8 into the cover 2 to clamp, the second connecting clamping groove 15 on the second connecting body 14 is connected with the connecting retaining ring 16 in the second auxiliary clamping groove 11, so as to realize the installation of the inner liner body 8, the cover 2 and the humeral stem 1, and the first guide column 20 and the second guide column 22 both play the role of guiding and preventing rotation.

[0027] The technical solution effectively compensates for the loose and misaligned situation caused by the clamping of the inner liner or the tray in the shoulder joint product, and when the offset amount is not enough during the operation, the cover 2 can be added to increase the thickness and the offset amount, effectively simplifying the operation difficulty and reducing the operation time.

[0028] The above technical solution only reflects the preferred technical solution of the technical scheme of the present application, and some changes made by the person skilled in the art to some parts of the above technical solution also reflect the principle of the present application and are within the protection scope of the present application.

Claims

1. A reverse shoulder locking structure, characterized by, The application relates to a humeral stem (1) provided with a cover (2), the cover (2) being provided with an inner liner assembly (3), the cover (2) being provided with a first connecting assembly (4), the first connecting assembly (4) being provided with a first guide assembly (5), the inner liner assembly (3) being provided with a second connecting assembly (6), and the second connecting assembly (6) being provided with a second guide assembly (7).

2. The anti-shoulder locking structure according to claim 1, characterized in that, The inner liner assembly (3) comprises an inner liner body (8) provided with an inner concave joint surface (9).

3. The anti-shoulder locking structure according to claim 1, wherein The humeral stem (1) is provided with a first auxiliary clamping groove (10), and the cover (2) is provided with a second auxiliary clamping groove (11) away from the first connecting assembly (4).

4. The anti-shoulder locking structure according to claim 1, wherein The first connecting assembly (4) comprises a first connecting body (12) arranged on the cover (2), the first connecting body (12) being provided with a first connecting clamping groove (13), and the first connecting clamping groove (13) being provided with a connecting stop ring (16).

5. The anti-shoulder lock structure according to claim 4, wherein The second connecting assembly (6) comprises a second connecting body (14) arranged on the inner liner assembly (3), the second connecting body (14) being provided with a second connecting clamping groove (15), and the second connecting clamping groove (15) being provided with a connecting stop ring (16).

6. The anti-shoulder lock structure according to claim 1, wherein The first connecting assembly (4) comprises a first connecting taper body (17) arranged on the cover (2), and the second connecting assembly (6) comprises a second connecting taper body (18) arranged on the inner liner assembly (3).

7. The anti-shoulder lock structure according to claim 1, wherein The humeral stem (1) is provided with a first limiting hole (19), and the first guide assembly (5) comprises a first guide column (20) arranged on the first connecting assembly (4), the first guide column (20) being arranged in the first limiting hole (19).

8. The anti-shoulder lock structure according to claim 1, wherein The cover (2) is provided with a second limiting hole (21), and the second guide assembly (7) comprises a second guide column (22) arranged on the second connecting assembly (6), the second guide column (22) being arranged in the second limiting hole (21).

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