Humerus support capable of adjusting prosthesis height

Abstract

The humerus support comprises a humerus tray and a humerus prosthesis which are connected with each other, the humerus prosthesis is used for being placed on the glenoid side of a scapular joint, the humerus tray is used for being connected with an external component, the humerus tray is provided with an opening, at least part of the humerus prosthesis is assembled in the humerus tray from the opening, and at least part of the humerus prosthesis is connected with the humerus tray. A first clamping groove is formed in the periphery of the humerus prosthesis, at least two second clamping grooves which are distributed up and down are correspondingly formed in the humerus tray, an activatable clamping piece which extends out of the first clamping groove is further arranged in the humerus prosthesis, and the clamping piece is configured to extend out of the first clamping groove and be clamped into any second clamping groove. Compared with the prior art, the height of the humerus prosthesis relative to the humerus tray can be adjusted so as to adapt to different use scenes, and practicability is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a humeral tray with adjustable height of prosthesis belongs to the field of prosthesis implant. BACKGROUND

[0002] Reverse shoulder arthroplasty is to place the spherical joint head of the shoulder joint prosthesis on the scapular glenoid side, and the glenoid is placed on the proximal humerus, which is contrary to the normal glenoid humeral joint pairing form.

[0003] The purpose of reverse shoulder joint is to better play the deltoid dynamic role in the case of deltoid muscle loss, complete shoulder joint abduction, forward bending and internal rotation, thereby reducing the dependence of shoulder joint deltoid muscle integrity, and the treatment effect is remarkable.

[0004] The length of the deltoid muscle of different patients is not much different, so the height of the humeral tray and the humeral pad combination is very important, if the height is too high, the deltoid muscle tendon may be torn after the prosthesis is placed, if the prosthesis is too short, the deltoid muscle will be relaxed after the prosthesis is placed.

[0005] Therefore, it is necessary to improve the existing humeral tray to solve the above problems. CONTENT OF THE UTILITY MODEL

[0006] In order to solve the above technical problems, the utility model provides a humeral tray with adjustable height of prosthesis, which can adjust the height of humeral prosthesis relative to humeral tray to adapt to different use scenes, and has practicality.

[0007] The technical scheme of the utility model is:

[0008] A humeral tray with adjustable height of prosthesis, comprising a humeral tray and a humeral prosthesis connected with each other, the humeral prosthesis is used for placing on the scapular glenoid side, the humeral tray is used for connecting with external components, the humeral tray is provided with an opening, the humeral prosthesis is at least partially assembled in the humeral tray from the opening, the outer periphery of the humeral prosthesis is provided with a first clamping groove, at least two second clamping grooves arranged in up and down direction are correspondingly arranged on the humeral tray, the humeral prosthesis is further provided with an activatable clamping piece extending from the first clamping groove, and the clamping piece is configured to extend from the first clamping groove and be clamped into any one of the second clamping grooves.

[0009] As a further improvement of the utility model, the clamping piece comprises a base disc and a clamping part arranged on the outer periphery of the base disc, a sliding groove is arranged on the base disc, one end of the clamping part is movably connected in the sliding groove, when the base disc rotates, the clamping part moves along the sliding groove, and extends from the first clamping groove and is clamped into the second clamping groove.

[0010] As a further improvement of the utility model, the sliding groove is correspondingly arranged with the clamping part and is formed in the base disc in an arc shape.

[0011] As a further improvement of the utility model, the sliding groove extends from the inside of the base disc towards the outer circumferential arc of the base disc.

[0012] As a further improvement of the utility model, the second clamping groove is formed on the opposite sides of the humeral tray, and the humeral tray further comprises an abutting side connecting the two second clamping grooves, and in the rotating process of the base disc, the clamping part slides along the abutting side to be clamped with the second clamping groove.

[0013] As a further improvement of the utility model, a guide surface is arranged between the abutting side and the second clamping groove, and the clamping part is adapted to the shape of the guide surface.

[0014] As a further improvement of the utility model, the clamping part further comprises a positioning block connected with the base disc, and in the vertical direction perpendicular to the horizontal plane, the positioning block extends towards the humeral tray and is clamped at the bottom of the humeral prosthesis.

[0015] As a further improvement of the utility model, a through hole is arranged on the positioning block, and the through hole is used for the entry of an external tool, so as to move to abut against the base disc through the through hole and drive the base disc to move in the up-down direction and / or rotate in the horizontal direction.

[0016] As a further improvement of the utility model, the bottom of the humeral prosthesis is provided with a clamping groove, and a clamping block is correspondingly arranged on the positioning block, the clamping block is accommodated in the clamping groove, the clamping block is exposed outside the humeral prosthesis, and the base disc and the clamping part are accommodated inside the humeral prosthesis.

[0017] As a further improvement of the utility model, when the base disc moves in the up-down direction, the humeral prosthesis is driven to move synchronously through the clamping part and / or the positioning block.

[0018] The humeral tray of the utility model has the following beneficial technical effects: the humeral tray is provided with a first clamping groove on the outer circumferential surface of the humeral prosthesis, at least two second clamping grooves are correspondingly arranged on the humeral tray, and an activatable clamping part is arranged in the humeral prosthesis and can extend from the first clamping groove and be clamped into any one of the second clamping grooves. In this way, the height of the humeral prosthesis relative to the humeral tray is adjusted to adapt to different use scenarios, and the utility model has practicality. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic view of the humeral tray according to the preferred embodiment of the utility model.

[0020] Figure 2 is Figure 1 The structure schematic view of the humeral prosthesis and the clamping piece.

[0021] Figure 3 is Figure 2 The structure schematic view of another angle of the clamping piece.

[0022] Figure 4 is Figure 3 The enlarged view of the dotted circle in the humeral prosthesis.

[0023] Figure 5 is Figure 2 The structure schematic view of the clamping piece.

[0024] Figure 6 is Figure 5 The structure schematic view of another angle of the clamping piece.

[0025] Figure 7 is Figure 1 The structure schematic view of the humeral tray. DETAILED DESCRIPTION

[0026] In order to enable the technical means of the utility model to be more clearly understood, and to be implemented according to the content of the specification, the specific implementation mode of the utility model is further described in detail below in combination with the drawings and examples, and the following examples are used to illustrate the utility model, but are not used to limit the scope of the utility model.

[0027] Please refer to Figures 1 to 7 The humeral tray 100 comprises a humeral tray 1 and a humeral prosthesis 2 which are connected to each other, the humeral prosthesis 2 is used to be placed in the glenoid side of the scapula, the humeral tray 1 is used to be connected with external components, the humeral tray 1 is provided with an opening 10, and the humeral prosthesis 2 is at least partially assembled in the humeral tray 1 from the opening 10.

[0028] In the embodiment, the humeral prosthesis 2 can adjust the position relative to the humeral tray 1 according to actual requirements, so as to adapt to different scenes, and has practicality.

[0029] Specifically, the outer periphery of the humeral prosthesis 2 is provided with a first clamping groove 21, and the humeral tray 1 is correspondingly provided with at least two second clamping grooves 11 arranged in an upper and lower manner. The humeral prosthesis 2 is further provided with an activatable clamping piece 3 extending from the first clamping groove 21. The clamping piece 3 is configured to extend from the first clamping groove 21 and be clamped into any one of the second clamping grooves 11. That is, by adjusting the relative position of the first clamping groove 21 of the humeral prosthesis 2 and any one of the second clamping grooves 11, and then activating the clamping piece 3, the humeral prosthesis 2 and the humeral tray 1 can be clamped together, thereby adjusting the height of the humeral prosthesis 2.

[0030] The clamping piece 3 includes a base disc 31 and a clamping portion 32 arranged on the outer periphery of the base disc 31. The base disc 31 is provided with a sliding groove 30, and one end of the clamping portion 32 is movably connected in the sliding groove 30. When the base disc 31 rotates, the clamping portion 32 moves along the sliding groove 30 and extends from the first clamping groove 21 and is clamped into the second clamping groove 11.

[0031] Preferably, the sliding groove 30 corresponds to the clamping portion 32 and is formed in an arc shape on the base disc 31. In this embodiment, the sliding groove 30 extends from the inside of the base disc 31 towards the outer periphery of the base disc 31. Therefore, when the base disc 31 rotates, the clamping portion 32 can gradually extend along the sliding groove 30 and then be clamped into the second clamping groove 11.

[0032] The second clamping grooves 11 are formed on opposite sides of the humeral tray 1. The humeral tray 1 further includes abutting sides 12 connecting the second clamping grooves 11 on both sides. During the rotation of the base disc 31, the clamping portion 32 slides along the abutting sides 12 to be clamped into the second clamping grooves 11.

[0033] Preferably, the vertical distance between the two abutting sides 12 is less than the vertical distance between the second clamping grooves 11 on the opposite sides in the same horizontal plane. Therefore, when the clamping portion 32 abuts against the abutting sides 12, the movement of the clamping portion 32 relative to the sliding groove 30 is limited.

[0034] A guide surface 13 is arranged between the abutting sides 12 and the second clamping grooves 11, and the clamping portion 32 is adapted to the shape of the guide surface 13. In this way, the clamping portion 32 can be more smoothly clamped into the second clamping groove 11.

[0035] In this embodiment, the clamping piece 3 further includes a positioning block 33 connected to the base disc 31. In the vertical direction perpendicular to the horizontal plane, the positioning block 33 extends towards the humeral tray 1 and is clamped at the bottom of the humeral prosthesis 2.

[0036] Preferably, an elastic member is arranged between the base plate 31 and the positioning block 33, so that the base plate 31 and the positioning block 33 are independent of each other, that is, when the base plate 31 rotates, the positioning block 33 will not rotate with it, nor will it be unable to rotate because the positioning block 33 is clamped on the humeral prosthesis 2. That is, by arranging the elastic member, the base plate 31 can rotate after being separated from the positioning block 33.

[0037] The positioning block 33 is provided with a through hole 330 for external tools to enter, so as to move through the through hole 330 to abut against the base plate 31 and drive the base plate 31 to move in the up-down direction and / or rotate in the horizontal direction.

[0038] In this embodiment, the bottom of the humeral prosthesis 2 is provided with a clamping groove 22, and the positioning block 33 is correspondingly provided with a clamping block 331, which is accommodated in the clamping groove 22, and the clamping block 22 is exposed outside the humeral prosthesis 2, and the base plate 31 and the clamping portion 32 are accommodated inside the humeral prosthesis. That is, the movement of the base plate 31 in the up-down direction drives the positioning block 33 to move synchronously, and then drives the humeral prosthesis 2 to move, so as to adjust the position of the humeral prosthesis 2. At the same time, through the cooperation of the clamping portion 32 and the elastic member, the base plate 31 is limited in a certain position in different directions, and then the humeral prosthesis 2 is fixed.

[0039] It can also be said that when the base plate 31 moves in the up-down direction, the humeral prosthesis 2 is driven to move synchronously by the clamping portion 32 and / or the positioning block 33.

[0040] In use, first, an external tool is inserted from the through hole 330 to abut against the base plate 31, and the rotation of the base plate 31 is controlled, and through the centrifugal force of the rotation of the base plate 31, the clamping portion 32 is moved along the sliding groove 3 to extend from the first clamping groove 21, and then clamped into the second clamping groove 11 to fix the base plate 31.

[0041] In summary, the humeral tray 100 of the utility model adjusts the height of the humeral prosthesis 2 relative to the humeral tray 1 to adapt to different use scenarios, which has practicality.

[0042] The above merely is preferred implementation manner of the present application, and is not used for limiting the present application, it should be pointed out, for ordinary skilled person in the technical field, on the premise of not departing from the technical principle of the present application, can also make several improvements and variations, these improvements and variations also should be regarded as the protection scope of the present application.

Claims

1. An adjustable prosthesis height humeral tray, characterized by, The application relates to a humeral tray and a humeral prosthesis connected with each other, the humeral tray being used for connecting with an external component, the humeral tray being provided with an opening, the humeral prosthesis being at least partially assembled into the humeral tray from the opening, the outer periphery of the humeral prosthesis being provided with a first clamping groove, the humeral tray being correspondingly provided with at least two second clamping grooves arranged in an up-down mode, and the humeral prosthesis being further provided with an activatable clamping piece extending from the first clamping groove, the clamping piece being configured to extend from the first clamping groove and be clamped into any one of the second clamping grooves.

2. The adjustable prosthesis height humeral stem of claim 1, wherein, The clamping piece comprises a base disc and a clamping part arranged on the outer periphery of the base disc, the base disc being provided with a sliding groove, and one end of the clamping part being movably connected in the sliding groove, when the base disc rotates, the clamping part moves along the sliding groove, extends from the first clamping groove and is clamped into the second clamping groove.

3. The adjustable prosthesis height humeral stem of claim 2, wherein, The sliding groove is correspondingly arranged on the base disc in a circular arc mode.

4. The adjustable prosthesis height humeral stem of claim 3, wherein, The sliding groove extends from the inner part of the base disc to the outer periphery of the base disc in an arc mode.

5. The adjustable prosthesis height humeral stem of claim 2, wherein, The second clamping grooves are formed on the opposite sides of the humeral tray, and the humeral tray further comprises an abutting side connecting the second clamping grooves on the two sides, during the rotation of the base disc, the clamping part slides along the abutting side and is clamped with the second clamping groove.

6. The adjustable prosthesis height humeral stem of claim 5, wherein, A guide surface is arranged between the abutting side and the second clamping groove, and the clamping part is adapted to the shape of the guide surface.

7. The adjustable prosthesis height humeral stem of claim 2, wherein, The clamping piece further comprises a positioning block connected with the base disc, in a vertical direction perpendicular to a horizontal plane, the positioning block extends towards the humeral tray and is clamped at the bottom of the humeral prosthesis.

8. The adjustable prosthesis height humeral stem of claim 7, wherein, A through hole is arranged on the positioning block, and the through hole is used for entering an external tool to move to abut against the base disc through the through hole and drive the base disc to move in an up-down direction and / or rotate in a horizontal direction.

9. The adjustable prosthesis height humeral stem of claim 8, wherein, The bottom of the humeral prosthesis is provided with a clamping groove, and a clamping block is correspondingly arranged on the positioning block, the clamping block is accommodated in the clamping groove, the clamping block is exposed to the outside of the humeral prosthesis, and the base disc and the clamping part are accommodated in the inside of the humeral prosthesis.

10. The adjustable prosthesis height humeral stem of claim 9, wherein, When the base disc moves in the up-down direction, the humeral prosthesis is driven to move synchronously by the clamping part and / or the positioning block.

Images