CN221154420U

CN221154420U - Combined shoulder joint prosthesis

Info

Publication number: CN221154420U
Application number: CN202322489963.XU
Authority: CN
Inventors: 郝蓉; 吕晓平
Original assignee: Shaanxi Zhongxin Fuyuan Medical Technology Development Co ltd
Current assignee: Shaanxi Zhongxin Fuyuan Medical Technology Development Co ltd
Priority date: 2023-09-13
Filing date: 2023-09-13
Publication date: 2024-06-18
Anticipated expiration: 2033-09-13

Abstract

The utility model discloses a combined shoulder joint prosthesis, which comprises a humerus head and a humerus handle arranged at the bottom of the humerus head, wherein a connecting column is fixedly connected to the outer wall of the bottom of the humerus head, a humerus stem splicing column is arranged at the bottom of the connecting column, and a wrapping mechanism which is convenient for cell growth and closing is arranged on the circumferential outer wall of the humerus stem splicing column; according to the utility model, when the insert is completely inserted into the slot, the ear plate is inserted into the ear slot, and then the fixing bolt is arranged in the second thread slot, so that the humerus handle and the humerus stem splicing column can be completely fixed together, the humerus handle and the humerus stem splicing column are prevented from relative displacement or rotation when in use, the humerus handle is prevented from falling off, the use is facilitated, the growth of cells around the prosthesis is facilitated through the wrapping mechanism, the connectivity of the prosthesis and surrounding cells is improved, the replacement of the humerus head is facilitated through the dismounting mechanism, the replacement of different humerus heads is facilitated according to requirements, the use is facilitated, and the clinical effect is good.

Description

Combined shoulder joint prosthesis

Technical Field

The utility model relates to the technical field of medical prostheses, in particular to a combined shoulder joint prosthesis.

Background

Shoulder joint consists of glenoid and humeral head, belongs to ball and socket joint, proximal humerus is one of the most common sites of occurrence of malignant bone primary tumor after lower femur and upper tibia, shoulder joint replacement has become one of the important methods for treating proximal humerus malignant bone tumor, shoulder joint prosthesis is needed in shoulder joint replacement, artificial shoulder joint replacement includes humeral head replacement and artificial total shoulder joint replacement, artificial humeral head replacement is the main surgical treatment method in clinical recent years, and in total shoulder joint replacement, the natural head of the patient's humerus is replaced by using a humeral prosthesis.

To be searched, a combined shoulder joint prosthesis of patent publication No. CN214549754U, comprising: a humeral component and a glenoid component, the humeral component comprising a humeral stem, a proximal humerus end, a translation mount, a translation sleeve, and a humeral head; the proximal end of the humerus handle is inserted into one end of the proximal end of the humerus and fixedly connected with the proximal end of the humerus through a first screw; the other end of the proximal humerus is fixedly connected with one end of the conversion base through a second screw; the other end of the conversion base is in sleeve joint fit with one end of the conversion sleeve, and the other end of the conversion sleeve is in sleeve joint fit with the plane end of the humerus head; the convex end of the humeral head is adapted to form the articular surface with the concave end of the glenoid component. The beneficial effects of the utility model are as follows: the position of the humerus head can be adjusted in all directions by adopting a modularized design, so that good anatomic reduction is formed, the characteristics of individual differentiation of the glenohumerus joint are covered, the corresponding adaptability requirements on different patients are realized, and the device has good universality and good clinical effect.

The technical characteristics have the following defects: most of the shoulder joint prostheses in the prior art are complex in structure, doctors operate and install the shoulder joint prostheses in the prior art in a complex manner during operation, the time required by the operation is greatly increased, the humerus bones and the humerus handles of the shoulder joint prostheses in the prior art are not fixedly connected, relative rotation is easy to occur between the humerus bones and the humerus handles, and further the situation that the connection of the prostheses is loose can be caused, so that the rehabilitation and the use of subsequent patients are affected.

Disclosure of utility model

The present utility model is directed to a combined shoulder prosthesis to solve the above-mentioned problems.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

The combined shoulder joint prosthesis comprises a humerus head and a humerus handle arranged at the bottom of the humerus head, wherein a connecting column is fixedly connected to the outer wall of the bottom of the humerus head, a humerus stem splicing column is arranged at the bottom of the connecting column, a wrapping mechanism which is convenient for cell growth and closing is arranged on the circumferential outer wall of the humerus stem splicing column, and a dismounting mechanism which is convenient for replacing the humerus head is arranged at the top of the humerus stem splicing column;

The utility model discloses a humerus stem spliced pole, including the humerus stem spliced pole, the one side outer wall of humerus stem spliced pole is opened there is the slot, and peg graft in the slot has the inserted block, and the bottom outer wall fixedly connected with plectane of inserted block, humerus handle fixedly connected with in the bottom outer wall of plectane, circumference one side outer wall top of humerus stem spliced pole is opened there is the ear groove, and one side inner wall of ear groove is opened there is the second screw thread groove, and top outer wall one side fixedly connected with otic placode of inserted block, and the otic placode is pegged graft in the ear groove, is provided with fixing bolt in the otic placode, and fixing bolt passes through the otic placode and rotates the grafting through the screw thread in having the second screw thread groove.

Preferably, the wrapping mechanism comprises two semicircular rings, one semicircular ring is fixedly connected to the other side of the circumferential outer wall of the humerus stem splicing column, the other semicircular ring is fixedly connected to one side of the circumferential outer wall of the insertion block, and a plurality of round holes distributed at equal distances are formed in the circumferential outer wall of the two semicircular rings.

Preferably, the dismounting mechanism comprises a threaded rod, the threaded rod is fixedly connected to the outer wall of the bottom of the connecting column, a first thread groove is formed in the inclined surface of the humerus stem splicing column, the threaded rod is rotationally inserted into the first thread groove through threads, and a top plate is fixedly sleeved on the outer wall of the circumference of the connecting column.

Preferably, the mounting groove is opened to the bottom outer wall other end of humerus head, and the top inner wall fixedly connected with spring of mounting groove, the bottom outer wall fixedly connected with locking piece of spring, the roof all opens with the top outer wall other end of humerus stem spliced pole has the transverse groove, and the locking piece peg graft in the transverse groove of humerus stem spliced pole through the transverse groove of roof, the other end outer wall bottom fixedly connected with frid of locking piece.

Preferably, one of the semicircular rings is fixedly connected with a square block, the other side of the outer circumferential wall of the insert block is provided with a square groove, the square groove is internally provided with a striking piece, the square block is made of iron, and the square block is inserted into the square groove.

Preferably, a vertical groove is formed in one end of the peripheral outer wall of the humerus handle, and reinforcing ribs are fixedly connected to the inner walls of the two sides of the vertical groove.

Preferably, both sides of the other end of the circumferential outer wall of the humerus stem splicing column are provided with side grooves, and one side inner wall of each side groove is provided with three through holes which are distributed at equal intervals.

Compared with the prior art, the utility model has the beneficial effects that:

According to the utility model, when the insert is completely inserted into the slot, the ear plate is inserted into the ear slot, and then the humerus handle and the humerus stem splicing column can be completely fixed together by installing the fixing bolt into the second thread slot, so that the humerus handle and the humerus stem splicing column are prevented from relative displacement or rotation during use, the humerus handle is prevented from falling off, the use is facilitated, the growth of cells around the prosthesis is facilitated by the wrapping mechanism, the connectivity of the prosthesis and surrounding cells is improved, the humerus head is convenient to replace by the dismounting mechanism, the replacement of different humerus heads according to requirements is facilitated, the use is facilitated, and the clinical effect is good;

According to the utility model, through the plurality of round holes distributed equidistantly on the two semicircular rings, the contact area between the prosthesis and surrounding cells is conveniently increased, the contact between the prosthesis and the surrounding cells is facilitated, the growth and growth of the cells are facilitated, the connectivity between the surrounding cells and the prosthesis is facilitated to be improved, when the humerus head needs to be rotated, the spring is compressed by lifting the groove plate, the locking block is pulled out of the transverse groove, when the humerus head is replaced, the transverse groove on the top plate is overlapped with the transverse groove on the humerus stem splicing column after the rotation and the installation are completed, the groove plate is loosened, the locking block can be ejected out through the restoration of the spring, namely the locking block is spliced in the transverse groove, so that the unstable connection between the humerus head and the humerus stem splicing column caused by the rotation of the humerus head can be avoided, the effect of locking the humerus head is realized, the growth and the prosthesis and the surrounding cells are facilitated through the vertical groove, and the humerus handle can be firmer through the reinforcing rib;

According to the utility model, the lateral grooves and the through holes are beneficial to stitching together the humerus stem splicing column and surrounding tissues, so that the effect of fixing the position of the prosthesis is realized, and the phenomenon of downward movement of the prosthesis after operation is avoided.

Drawings

Fig. 1 is a schematic view showing the overall structure of a combined shoulder joint prosthesis.

Fig. 2 is a schematic view of a reinforcing rib structure of a combined shoulder joint prosthesis.

Fig. 3 is a schematic block structure of a combined shoulder prosthesis.

Fig. 4 is a schematic view of a square block structure of a modular shoulder prosthesis.

Fig. 5 is a schematic view of a striking plate structure of a combination shoulder prosthesis.

Fig. 6 is a schematic view of a spring structure of a modular shoulder prosthesis.

In the figure: 1. humeral head; 2. a top plate; 3. a humeral stem spliced column; 4. a fixing bolt; 5. a semicircular ring; 6. a round hole; 7. humeral stem; 8. a vertical groove; 9. a side groove; 10. a through hole; 11. a trough plate; 12. a locking block; 13. a connecting column; 14. reinforcing ribs; 15. ear plates; 16. inserting blocks; 17. a slot; 18. ear grooves; 19. a transverse groove; 20. a first thread groove; 21. square blocks; 22. a second thread groove; 23. a square groove; 24. a striking plate; 25. a spring; 26. a threaded rod.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

Referring to fig. 1-6, in an embodiment of the present utility model, a combined shoulder joint prosthesis includes a humerus head 1 and a humerus stem 7 disposed at the bottom of the humerus head 1, a connecting post 13 is fixedly connected to the outer wall of the bottom of the humerus head 1, a humerus stem splicing post 3 is disposed at the bottom of the connecting post 13, a wrapping mechanism for facilitating cell growth is disposed on the circumferential outer wall of the humerus stem splicing post 3, and a dismounting mechanism for facilitating replacement of the humerus head 1 is disposed at the top of the humerus stem splicing post 3;

The utility model provides a stem spliced pole 3's one side outer wall is opened there is slot 17, peg graft in slot 17 has inserted block 16, the bottom outer wall fixedly connected with plectane of inserted block 16, humerus handle 7 fixed connection is in the bottom outer wall of plectane, it has ear groove 18 to open circumference one side outer wall top of stem spliced pole 3, one side inner wall of ear groove 18 is opened there is second thread groove 22, top outer wall one side fixedly connected with otic placode 15 of inserted block 16, otic placode 15 pegs graft in ear groove 18, be provided with fixing bolt 4 in the otic placode 15, fixing bolt 4 has second thread groove 22 through the otic placode 15 through the screw rotation grafting, during the use, implant the distal end of humerus handle 7 in the humerus marrow cavity, humerus head 1 and shoulder pelvis part cooperation form the articular surface, the cooperation bone cement imbeds in the shoulder blade, when splicing humerus handle 7 and humerus head 1, insert in slot 17 through taking the inserted block 16, when inserted block 16 completely peg graft in slot 17, when inserting in slot 17, otic placode 15 can peg graft in the ear groove 18, and then install in fixing bolt 4 in the second thread groove 22 and can not take place the same place the shank 7 and change the mechanism through the screw thread, can be favorable to change the relative motion with the humerus handle 7, the change mechanism is favorable to the change, the relative position of the stem handle is favorable to the change, the mechanism is favorable to take place, the relative change, the mechanism is convenient for the change around the stem handle is with the humerus handle 7, the stem handle is easy to be used, and the relative displacement is used, the 3, and the joint mechanism is easy to change.

Wherein, parcel mechanism includes two semicircle rings 5, one semicircle ring 5 fixed connection is in the circumference outer wall opposite side of the dry spliced pole of humerus 3, and another semicircle ring 5 fixed connection is in the circumference outer wall one side of the inserted block 16, and a plurality of equidistance round holes 6 that distribute are all opened to the circumference outer wall of two semicircle rings 5, through a plurality of equidistance round holes 6 that distribute on two semicircle rings 5, be convenient for increase with the area of contact of surrounding cells, do benefit to the cell contact on prosthesis and the surrounding, the cell growth of being convenient for closes, do benefit to the connectivity that improves surrounding cells and prosthesis.

Wherein, disassembly and assembly mechanism includes threaded rod 26, threaded rod 26 fixed connection is in the bottom outer wall of spliced pole 13, open on the inclined plane of humerus stem spliced pole 3 has first thread groove 20, and threaded rod 26 is pegged graft in first thread groove 20 through the screw thread rotation, the fixed roof 2 that has cup jointed of circumference outer wall of spliced pole 13, spill completely from first thread groove 20 through rotating humerus head 1 to threaded rod 26, can dismantle humerus head 1, be convenient for install other humerus heads 1 as required, the installation is comparatively simple convenient, do benefit to the use, through roof 2, play spacing effect.

The other end of the outer wall of the bottom of the humerus head 1 is provided with a mounting groove, the inner wall of the top of the mounting groove is fixedly connected with a spring 25, the outer wall of the bottom of the spring 25 is fixedly connected with a locking block 12, the top plate 2 and the other end of the outer wall of the top of the humerus stem splicing column 3 are provided with transverse grooves 19, the locking block 12 is inserted into the transverse grooves 19 of the humerus stem splicing column 3 through the transverse grooves 19 of the top plate 2, the bottom of the other end of the locking block 12 is fixedly connected with a groove plate 11, when the humerus head 1 needs to be rotated, the groove plate 11 is lifted, the spring 25 is compressed, the locking block 12 is pulled out of the transverse grooves 19, when the humerus head 1 is replaced, the transverse grooves 19 on the top plate 2 are overlapped with the transverse grooves 19 on the humerus stem splicing column 3 after the rotation insertion mounting is completed, the groove plate 11 is loosened, and the locking block 12 can be ejected through the restoration of the spring 25, namely the locking block 12 is inserted into the transverse grooves 19, and therefore the connection instability of the humerus head 1 and the humerus stem splicing column 3 caused by rotation of the humerus head 1 can be avoided, and the locking effect of the humerus head 1 can be achieved.

Wherein, the circumference inner wall fixedly connected with square piece 21 of one of them semicircle ring 5, the circumference outer wall opposite side of inserted block 16 is opened there is square groove 23, installs in the square groove 23 and hits striking piece 24, square piece 21 is made for iron, and square piece 21 peg graft in square groove 23, through square piece 21 and hit striking piece 24, when inserted block 16 peg graft in slot 17, square piece 21 can peg graft in square groove 23 completely, and then bump with hitting piece 24, play the effect of reminding the staff that inserted block 16 peg graft in slot 17 completely.

Wherein, open at the circumference outer wall one end of humerus handle 7 has perpendicular groove 8, and the equal fixedly connected with strengthening rib 14 of both sides inner wall of perpendicular groove 8, through perpendicular groove 8, do benefit to the growth of prosthesis and surrounding cell and close, through strengthening rib 14, can make humerus handle 7 more firm.

Example 2

Referring to fig. 1, unlike in embodiment 1, the lateral grooves 9 are formed on both sides of the other end of the circumferential outer wall of the humerus stem splicing column 3, and three through holes 10 are formed on the inner wall of one side of the lateral grooves 9 and are equidistantly distributed, so that the humerus stem splicing column 3 and surrounding tissues are sutured together through the lateral grooves 9 and the through holes 10, which is beneficial to fixing the position of the prosthesis and avoiding the downward movement of the prosthesis after the operation.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.

Claims

1. A combined shoulder joint prosthesis, comprising a humeral head (1) and a humeral stem (7) arranged at the bottom of the humeral head (1), characterized in that: the novel humerus head comprises a humerus head body and is characterized in that a connecting column (13) is fixedly connected to the outer wall of the bottom of the humerus head body (1), a humerus stem splicing column (3) is arranged at the bottom of the connecting column (13), a wrapping mechanism which is convenient for cell growth and closing is arranged on the outer wall of the circumference of the humerus stem splicing column (3), and a dismounting mechanism which is convenient for replacing the humerus head body (1) is arranged at the top of the humerus stem splicing column (3);

The utility model discloses a novel humerus stem spliced pole, including a humerus stem spliced pole, a humerus stem spliced pole and a humerus stem, wherein a slot (17) is formed in one side outer wall of the humerus stem spliced pole (3), an insert block (16) is inserted in the insert slot (17), a circular plate is fixedly connected with the bottom outer wall of the insert block (16), a humerus handle (7) is fixedly connected with the bottom outer wall of the circular plate, an ear groove (18) is formed in the circumference side outer wall top of the humerus stem spliced pole (3), a second thread groove (22) is formed in one side inner wall of the ear groove (18), an ear plate (15) is fixedly connected with an ear plate (15) on one side of the top outer wall of the insert block (16), a fixing bolt (4) is arranged in the ear plate (15), and the fixing bolt (4) is inserted in the second thread groove (22) through threaded rotation.

2. A modular shoulder joint prosthesis as claimed in claim 1, wherein: the wrapping mechanism comprises two semicircular rings (5), wherein one semicircular ring (5) is fixedly connected to the other side of the circumferential outer wall of the humerus stem splicing column (3), the other semicircular ring (5) is fixedly connected to one side of the circumferential outer wall of the insertion block (16), and a plurality of round holes (6) distributed at equal distances are formed in the circumferential outer wall of the semicircular rings (5).

3. A modular shoulder prosthesis according to any one of claims 1-2, characterized in that: the dismounting mechanism comprises a threaded rod (26), the threaded rod (26) is fixedly connected to the outer wall of the bottom of the connecting column (13), a first thread groove (20) is formed in the inclined surface of the humerus stem splicing column (3), the threaded rod (26) is rotationally inserted into the first thread groove (20) through threads, and a top plate (2) is fixedly sleeved on the outer wall of the circumference of the connecting column (13).

4. A modular shoulder joint prosthesis according to claim 3, characterized in that: the utility model discloses a humerus head, including upper portion and lower portion, the outer wall other end of the bottom of humerus head (1) is opened there is the mounting groove, and the top inner wall fixedly connected with spring (25) of mounting groove, the bottom outer wall fixedly connected with locking piece (12) of spring (25), roof (2) all open with the top outer wall other end of humerus stem spliced pole (3) has transverse groove (19), and locking piece (12) peg graft in transverse groove (19) of humerus stem spliced pole (3) through transverse groove (19) of roof (2), other end outer wall bottom fixedly connected with frid (11) of locking piece (12).

5. A modular shoulder joint prosthesis as claimed in claim 2, wherein: one of the semicircular rings (5) is fixedly connected with a square block (21), the other side of the outer circumferential wall of the insertion block (16) is provided with a square groove (23), a striking piece (24) is arranged in the square groove (23), the square block (21) is made of iron, and the square block (21) is inserted into the square groove (23).

6. A modular shoulder joint prosthesis as claimed in claim 1, wherein: a vertical groove (8) is formed in one end of the outer circumferential wall of the humerus handle (7), and reinforcing ribs (14) are fixedly connected to the inner walls of the two sides of the vertical groove (8).

7. A modular shoulder joint prosthesis as claimed in claim 1, wherein: the two sides of the other end of the circumferential outer wall of the humerus stem splicing column (3) are provided with side grooves (9), and the inner wall of one side of each side groove (9) is provided with three through holes (10) which are distributed at equal intervals.