Shoulder joint prosthesis connection assembly

Abstract

The application discloses a shoulder joint prosthesis connecting assembly and belongs to the technical field of medical devices. The shoulder joint prosthesis connecting assembly comprises a rotating assembly and a stretching assembly. The rotating assembly is mainly composed of a connecting piece and a fixing piece. The connecting piece is constrained on the fixing piece and can rotate around the central axis of the fixing piece. The stretching assembly is mainly composed of a bundle belt and an adjusting mechanism. One end of the bundle belt is fixed on the connecting piece, and the adjusting mechanism is located on the bundle belt and used for adjusting the tightness of the bundle belt. The application can conveniently realize the control operation of the comfort of different forms of wearing personnel.

Description

A shoulder joint prosthesis connection assembly Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a shoulder joint prosthesis connection component. Background Technology

[0002] The shoulder joint refers to the part of the upper limb that connects to the trunk, including the upper arm, armpit, chest area, and back area where the scapula is located, which is a large part of the body. It is composed of the glenoid cavity of the scapula and the head of the humerus. It is a ball-and-socket joint and is the largest and most flexible joint of the upper limb. The joint capsule is relatively loose and attaches to the periphery of the glenoid cavity and the anatomical neck. The synovial layer of the joint cavity bulges through the fibrous layer to form the synovial bursa of the subscapularis muscle and the intertubercular synovial sheath that surrounds the long head tendon of the biceps brachii muscle.

[0003] In the existing technology, the fixation force of the straps for the wearer is relatively fixed during the use of shoulder joint prostheses, and the tightness of the straps is not easy to adjust. This makes it easy for patients with larger joints to experience a feeling of tightness when wearing the prosthesis, and discomfort may occur after wearing it for a long time, affecting the patient's normal activities. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a shoulder joint prosthesis connection component that can conveniently control the comfort of users in different configurations.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A shoulder joint prosthesis connection assembly includes a rotation assembly and a tension assembly; the rotation assembly mainly consists of a connector and a fixator, wherein the connector is constrained to the fixator and the connector can rotate around the central axis of the fixator; the tension assembly mainly consists of a cable tie and an adjustment mechanism; one end of the cable tie is fixed to the connector, and the adjustment mechanism is located on the cable tie for adjusting the tightness of the cable tie.

[0007] Furthermore, the central axes of the connector and the fixing member coincide; wherein the connector is a hemispherical closed shell structure, and the fixing member is a cylindrical shell structure, and the central axes of the two coincide and are connected by a bolt assembly that passes through the central axis.

[0008] Furthermore, the connecting surface edge of the fastener is provided with an extended annular wall plate, and the fastener is constrained within the annular wall plate.

[0009] Furthermore, the fastener has a fan-shaped notch and an arc-shaped groove on its connecting surface, and the centers of the arc-shaped groove and the fan-shaped notch are located on the central axis of the fastener; the fan-shaped notch and the arc-shaped groove are interconnected; a connecting block is provided at the top of the connecting plane of the connector; the connecting block has a concave cross-section that extends along an arc line, and the center of the arc line is located on the central axis of the connector; the connecting block is located in the fan-shaped notch and can move along the arc-shaped groove.

[0010] Furthermore, the connecting block, the fan-shaped notch, and the arc-shaped groove are all provided in two sets; the arc of the fan-shaped notch is the same as the arc of the connecting block; the groove of the connecting block is engaged with the connecting surface of the fixing member through the arc-shaped groove.

[0011] Furthermore, a through hole is provided along the central axis of the fastener, and a threaded post along the central axis is provided on the connecting plane of the connector; a fixing nut and a locking nut are fixedly connected to the threaded post; the fixing nut and the locking nut are sandwiched between the inner and outer sides of the fixing surface of the fastener.

[0012] Furthermore, the adjustment mechanism includes a control box and an adjustment plate; the adjustment plate is located inside the control box and its two ends are respectively connected to the cable tie; both ends of the control box are provided with through openings, through which the cable tie passes;

[0013] The adjustment plate has multiple slots on both sides; the control box also has a slide rail inside, and there is a block that can move along the slide rail; the block corresponds to the slot on one side of the adjustment plate.

[0014] Furthermore, the extension direction of the slide is perpendicular to the movement direction of the adjusting plate; the adjusting plate is provided with the locking block on both sides, and the locking block is located in the corresponding slide.

[0015] Furthermore, the control box is also provided with a positioning bolt that penetrates its top wall and is threadedly connected to the top wall; the control box is provided with a hinge mechanism, the hinge mechanism includes a rotating rod, both ends of the rotating rod are provided with a pull rod connected to its bearing; the other end of the pull rod is connected to the corresponding locking block bearing; the end of the positioning bolt located inside the control box is fixedly connected to the middle position of the rotating rod.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. This invention, by setting a locking block, allows for improved comfort for users of different body types when using a shoulder joint prosthesis. The first bolt, driven by the first nut, rotates a rotating rod, which in turn rotates the locking block along the inner wall of the fixed groove. Simultaneously, the locking block slides along the groove on the outer wall of the adjusting plate, effectively adjusting the tension and looseness of the adjusting plate within the control box. This achieves a control operation that improves the comfort of users of different body types.

[0018] 2. By setting a connecting block and a connecting groove, when the shoulder joint prosthesis is connected to the prosthesis, in order to facilitate the assembly and disassembly of the shoulder joint prosthesis and the prosthesis, the connecting plate can be rotated so that the second nut rotates along the outer wall of the second bolt. At the same time, the movement of the connecting plate drives the connecting block to rotate until the connecting block enters the connecting groove, so as to facilitate the assembly and disassembly of the shoulder joint prosthesis and the prosthesis, thereby improving the control operation of the ease of assembly and disassembly of the shoulder joint prosthesis. Attached Figure Description

[0019] Figure 1 is a schematic diagram of the overall connection structure according to an embodiment of the present invention.

[0020] Figure 2 is a structural schematic diagram of an embodiment of the present invention.

[0021] Figure 3 is a schematic diagram of the internal structure of the control box in an embodiment of the present invention.

[0022] Figure 4 is a schematic diagram of the structure of the rotational valence in an embodiment of the present invention.

[0023] Figure 5 is a schematic diagram of the connection surface of the fastener in an embodiment of the present invention.

[0024] Figure 6 is a schematic diagram of the connection plane of the connector in an embodiment of the present invention.

[0025] In the diagram: 1. Arm body, 2. Connector, 3. Cable harness, 4. Adjustment plate, 5. Control box, 6. Positioning nut, 7. Positioning bolt, 8. Rotating rod, 9. Pulling rod, 10. Locking block, 11. Slide rail, 12. Slot, 13. Fixing surface, 14. Connecting block, 15. Locking nut, 16. Threaded post, 17. Arc groove, 18. Connecting surface, 19. Groove, 20. Fixing nut, 21. Connecting plane. Detailed Implementation

[0026] The present invention will now be further described with reference to the accompanying drawings.

[0027] Referring to Figures 1 and 2, this embodiment includes a rotating assembly and a stretching assembly; the rotating assembly mainly consists of a connector and a fixing member, wherein the connector is constrained to the fixing member and the connector can rotate around the central axis of the fixing member; the stretching assembly mainly consists of a cable tie and an adjusting mechanism; one end of the cable tie is fixed to the hemispherical surface of the connector, and the adjusting mechanism is located on the cable tie for adjusting the tightness of the cable tie.

[0028] Referring to Figure 3, the adjustment mechanism includes a control box and an adjustment plate; the adjustment plate is located inside the control box and its two ends are connected to cable ties respectively; both ends of the control box have through-holes through which the cable ties pass; both sides of the adjustment plate have multiple slots; a slide is also formed inside the control box, and a locking block that can move along the slide is provided in the slide; the locking block corresponds to a slot on one side of the adjustment plate. The extension direction of the slide is perpendicular to the movement direction of the adjustment plate; the locking block is provided on both sides of the adjustment plate, and the locking block is located in the corresponding slide.

[0029] The control box is also equipped with a positioning bolt that penetrates its top wall and is threadedly connected to the top wall; the control box is equipped with a hinge mechanism, which includes a rotating rod, and both ends of the rotating rod are equipped with pull rods connected to their bearings; the other end of the pull rod is connected to the corresponding locking block bearing; the end of the positioning bolt located inside the control box is fixedly connected to the middle position of the rotating rod.

[0030] Referring to Figures 4 to 6, the central axes of the connector and the fixing component coincide. The connector is a hemispherical closed shell structure, and the fixing component is a cylindrical shell structure. Their central axes coincide and are connected by a bolt assembly that passes through the central axis. The fixing component has an extended annular wall plate at the edge of its connecting surface, and the connector is constrained within the annular wall plate. The fixing component has a fan-shaped notch and an arc-shaped groove on its connecting surface, and the centers of the arc-shaped groove and the fan-shaped notch are located on the central axis of the fixing component. The fan-shaped notch and the arc-shaped groove are interconnected. A connecting block is provided at the top of the connecting plane of the connector. The connecting block has a U-shaped cross-section that extends along an arc line, and the center of the arc line is located on the central axis of the connector. The connecting block is located in the fan-shaped notch and can move along the arc-shaped groove. There are two sets of connecting blocks, fan-shaped notches, and arc-shaped grooves. The curvature of the fan-shaped notch is the same as that of the connecting block. The groove of the connecting block engages with the connecting surface of the fixing component through the arc-shaped groove. A through hole is provided along the central axis of the fastener, and a threaded post along the central axis is provided on the connecting plane of the connector; a fixing nut and a locking nut are fixedly connected to the threaded post; the fixing nut and the locking nut are sandwiched between the inner and outer sides of the fixing surface of the fastener.

[0031] In this embodiment, the pull rod 9 forms a rotating structure with the positioning bolt 7 and the rotating rod 8. There are two sets of pull rods 9, and the positions of the two sets of pull rods 9 are symmetrical about the rotation center of the rotating rod 8. This is beneficial for the rotation of the first bolt 7 to drive the pull rod 9 to rotate through the connection of the rotating rod 8, so as to realize the effective sliding control operation of the locking block 10.

[0032] In this embodiment, the locking block 10 forms a sliding structure with the pull rod 9 and the slide 11. There are two sets of locking blocks 10. The positions of the two sets of locking blocks 10 are symmetrical about the central axis of the adjusting plate 4, which is beneficial for the rotation of the pull rod 9 to drive the locking block 10 to slide along the inner wall of the fixed groove block 11, so as to realize the control operation of effectively adjusting the tension of the cable tie 3.

[0033] In this embodiment, the cable tie 3 forms an adjustment structure with the control box 5 through the locking block 10 and the locking groove 12. This facilitates the sliding of the locking block 10 along the inner wall of the locking groove 12, enabling the cable tie 3 to move effectively within the control box 5, thus improving the comfort of users of different body types. The adjustment plate 4 is manually pulled within the control box 5. The sliding of the locking block 10 causes it to slide into the locking groove 12 on the outer wall of the adjustment plate 4, making the locking block 10 and the locking groove 12 fit together. This prevents the adjustment plate 4 from being pulled out of the control box 5, allowing adjustment of the length of the adjustment plate 4 on the outer wall of the control box 5. This adjusts the length of the cable tie 3 to suit different body types and adjusts the tension of the cable tie 3 accordingly.

[0034] The surface of the connecting surface 18 and the connecting block 14 are connected by an arc-shaped groove 17. The connecting block 14 is provided with a groove 19. During operation, by setting the connecting block 14 and the arc-shaped groove 17, it is convenient to connect the shoulder joint prosthesis and the prosthesis. In order to facilitate the assembly and disassembly of the shoulder joint prosthesis and the prosthesis, the connecting block 14 can be inserted into the arc-shaped groove 17 first, and the threaded post 16 can be inserted into the fixing nut 15. When it is necessary to install the shoulder joint prosthesis and the prosthesis, the connecting body 2 can be rotated by the connection of the threaded post 16, so that the gap between the connecting body 2 and the fixing surface 13 is reduced. The groove 19 on the connecting block 14 slides along the fan-shaped notch and the outer wall of the arc-shaped groove. When the connecting body 2 and the connecting plate 13 are tightly fitted, the connecting block 14 and the connecting surface 18 are locked together. This realizes the control operation that improves the convenience of assembling and disassembling the shoulder joint prosthesis and the prosthesis when it is necessary to connect the shoulder joint prosthesis and the prosthesis.

[0035] This facilitates the sliding of the connecting block 14 along the inner wall of the arc groove 17, enabling the connector to be effectively engaged and fixed, thereby improving the ease of disassembly and assembly of the shoulder joint prosthesis.

[0036] In this embodiment, two sets of connecting blocks 14 and arc-shaped grooves 17 are provided. The positions of the two sets of connecting blocks 14 and connecting grooves 17 are equidistant from the center of the connecting surface 18. This facilitates the control operation that improves the connection stability between the shoulder joint prosthesis and the prosthesis by setting two sets of connecting blocks 14 and arc-shaped grooves 17 equidistant from the center of the fixing member.

[0037] Working principle: First, when a patient is using a shoulder joint prosthesis, in order to improve the comfort of users with different body shapes, the positioning bolt 7 can be rotated, which in turn drives the rotating rod 8 to rotate through the positioning nut 6. The rotation of the rotating rod 8 drives the movement of the pulling rod 9 to drive the locking block 10 to slide along the inner wall of the slide rail 11. At the same time, it drives the locking block 10 to slide along the slot 12 on the outer wall of the adjusting plate 4, so as to effectively adjust the tension and looseness of the adjusting plate 4 within the control box 5, thereby achieving the control operation to improve the comfort of users with different body shapes.

[0038] Finally, when connecting the shoulder joint prosthesis to the prosthesis, to facilitate the assembly and disassembly of the shoulder joint prosthesis and prosthesis, the connecting block 14 can be inserted into the arc-shaped groove 17, and the threaded post 16 can be inserted into the inner wall of the fixing nut 15. When it is necessary to install the shoulder joint prosthesis and prosthesis, the connecting member 2 can be rotated through the connection of the threaded post 16, so that the gap between the connecting member 2 and the fixing member is reduced, and the groove 19 on the outer wall of the connecting block 14 slides along the arc-shaped groove of the connecting surface 18. When the connecting member 2 and the connecting surface 18 are tightly fitted, the connecting block 14 and the arc-shaped groove 17 of the connecting surface 18 are misaligned and locked together, thereby improving the ease of assembly and disassembly of the shoulder joint prosthesis and prosthesis when it is necessary to connect the shoulder joint prosthesis and prosthesis.

Claims

1. A shoulder joint prosthesis connection assembly, characterized in that, The device includes a rotating assembly and a tensioning assembly. The rotating assembly mainly consists of a connector and a fixing member, wherein the connector is constrained to the fixing member and can rotate around the central axis of the fixing member. The tensioning assembly mainly consists of a cable tie and an adjusting mechanism. One end of the cable tie is fixed to the connector, and the adjusting mechanism is located on the cable tie to adjust its tightness. The central axes of the connector and the fixing member coincide. The connector is a hemispherical closed shell structure, and the fixing member is a cylindrical shell structure. Their central axes coincide and are connected by a screw passing through the central axis. The fastener assembly is connected; the connecting surface edge of the fastener is provided with an extended annular wall plate, and the fastener is constrained in the annular wall plate; the connecting surface of the fastener is provided with a fan-shaped notch and an arc-shaped groove, and the center of the arc-shaped groove and the fan-shaped notch is located on the central axis of the fastener; the fan-shaped notch and the arc-shaped groove are interconnected; a connecting block is provided at the top of the connecting plane of the fastener; the cross-section of the connecting block is U-shaped, extending along an arc line, and the center of the arc line is located on the central axis of the fastener; the connecting block is located in the fan-shaped notch and can move along the arc-shaped groove.

2. The shoulder joint prosthesis connection assembly according to claim 1, characterized in that, The connecting block, the fan-shaped notch, and the arc-shaped groove are all provided in two sets; the arc of the fan-shaped notch is the same as the arc of the connecting block; the groove of the connecting block is engaged with the connecting surface of the fixing component through the arc-shaped groove.

3. The shoulder joint prosthesis connection assembly according to claim 1, characterized in that, A through hole is provided along the central axis of the fastener, and a threaded post extending along the central axis is provided on the connecting plane of the connector; a fixing nut and a locking nut are fixedly connected to the threaded post; the fixing nut and the locking nut are sandwiched between the inner and outer sides of the fixing plane of the fastener.

4. The shoulder joint prosthesis connection assembly according to claim 1, characterized in that, The adjustment mechanism includes a control box and an adjustment plate; the adjustment plate is located inside the control box and its two ends are respectively connected to the cable tie; both ends of the control box are provided with through openings, and the cable tie passes through the corresponding through openings; both sides of the adjustment plate are provided with multiple slots; a slide is also formed inside the control box, and a locking block that can move along the slide is provided in the slide; the locking block corresponds to the slot on one side of the adjustment plate.

5. A shoulder joint prosthesis connection assembly according to claim 4, characterized in that, The extension direction of the slide is perpendicular to the movement direction of the adjustment plate; the adjustment plate is provided with the locking block on both sides, and the locking block is located in the corresponding slide.

6. A shoulder joint prosthesis connection assembly according to claim 5, characterized in that, The control box is also provided with a positioning bolt that penetrates its top wall and is threadedly connected to the top wall; the control box is provided with a hinge mechanism, the hinge mechanism includes a rotating rod, both ends of the rotating rod are provided with a pull rod connected to its bearing; the other end of the pull rod is connected to the corresponding locking block bearing; the end of the positioning bolt located inside the control box is fixedly connected to the middle position of the rotating rod.

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