Artificial shoulder joint prosthesis assembly

Abstract

The utility model discloses an artificial shoulder joint prosthesis assembly which comprises a shoulder glenoid ball head and a shoulder glenoid back plate connected with the shoulder glenoid ball head through a locking screw. Wherein the shoulder glenoid back plate is adapted to be fixed to a shoulder blade by at least two thread tapes; the shoulder glenoid backboard is provided with at least two threading holes suitable for being connected with two wire belts in a one-to-one matched mode. The line belt comprises a connecting belt connected with the shoulder glenoid cavity back plate, an annular coil connected with the side end, located on the shoulder glenoid cavity back plate and back to the shoulder glenoid cavity ball head, of the connecting belt, and a belt loop titanium plate connected with the end, away from the connecting belt, of the annular coil.

Description

Technical Field

[0001] This utility model relates to the field of surgical instruments, and in particular to an artificial shoulder joint prosthesis assembly. Background Technology

[0002] Total shoulder arthroplasty is a surgical procedure used to treat serious shoulder diseases or injuries. It restores shoulder function and reduces pain by removing part or all of the damaged shoulder joint and replacing it with an artificial shoulder joint component.

[0003] When replacing artificial components, the installation of the scapular side component is more difficult. Existing designs use screw fixation, typically a central 6.5mm diameter screw accompanied by two to four 4.5mm diameter peripheral screws. For example, CN107184293A discloses a reverse-position artificial shoulder joint prosthesis, which uses multiple screws on one side of the glenoid disc for insertion into the scapula. This fixation method is very difficult for surgeons to screw into the thin scapula. If the screw is screwed in incorrectly or is too long, it may even damage the suprascapular nerve that runs along the scapula.

[0004] Therefore, further improvements are needed for artificial shoulder joint prosthesis components, particularly for the fixation structure of the glenoid relative to the scapula. Utility Model Content

[0005] The purpose of this invention is to provide an artificial shoulder joint prosthesis assembly to solve the technical problems of the glenoid structure.

[0006] The artificial shoulder joint prosthesis component of this utility model is implemented as follows:

[0007] An artificial shoulder joint prosthesis assembly includes:

[0008] A girdle head, and a girdle back plate connected to the girdle head by a locking screw; wherein

[0009] The glenoid backplate is adapted to be fixed to the scapula by at least two straps.

[0010] The shoulder plate is provided with at least two thread holes suitable for one-to-one mating of two wires;

[0011] The cable includes a connecting strip connected to the back plate of the glenoid fossa, an annular coil connected to the end of the connecting strip on the side of the back plate of the glenoid fossa facing away from the glenoid head, and a looped titanium plate connected to the end of the annular coil away from the connecting strip.

[0012] In an optional embodiment of this utility model, the shoulder girder back plate adopts a circular structure; and

[0013] The shoulder plate has a screw hole at its center for a locking screw.

[0014] In an optional embodiment of this utility model, four threading holes are evenly provided on the circumferential side of the shoulder plate surrounding the nail hole.

[0015] In an optional embodiment of this utility model, each of the threading holes includes two adjacent through holes that extend axially along the back plate of the shoulder and a partition located between the two through holes.

[0016] In an optional embodiment of this invention, each of the through holes is a circular hole.

[0017] In an optional embodiment of this invention, the connecting band is adapted to pass through a pair of through holes simultaneously so that one end of the ring connecting band is restricted by the spacer; and

[0018] The other end of the connecting strap is adapted to be tightened and fixed to the side of the glenoid fossa facing the glenoid ball.

[0019] In an optional embodiment of this invention, the looped titanium plate is connected to the looped coil via a looped connecting wire.

[0020] In an optional embodiment of this utility model, the looped titanium plate includes a plate-shaped body and a pair of adjacent perforations disposed on the plate-shaped body and a partition portion located between the pair of perforations;

[0021] The loop connecting wire is adapted to pass through a pair of holes simultaneously so that one end of the loop connecting wire is restricted to the partition.

[0022] By adopting the above technical solution, this utility model has the following beneficial effects: The artificial shoulder joint prosthesis component of this utility model, through the improvement and optimization of the glenoid structure, can be fixed to the scapula by means of a cable strap, replacing the screw fastening method of the glenoid in the prior art. Moreover, the cable strap, together with the looped titanium plate, can be hung on the other side of the bone to achieve fixation, avoiding the difficulty of installing the glenoid side components during artificial shoulder joint installation, and also avoiding the problems of screw dislodgement and unreliable fixation caused by traditional structures. Attached Figure Description

[0023] Figure 1 This is an exploded structural diagram of the artificial shoulder joint prosthesis component of this utility model;

[0024] Figure 2 This is a cross-sectional structural diagram of the artificial shoulder joint prosthesis component of this utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the looped titanium plate in the artificial shoulder joint prosthesis component of this utility model;

[0026] Figure 4 This is a schematic diagram of the connection structure of the connecting band and the annular coil in an optional embodiment of the artificial shoulder joint prosthesis component of this utility model.

[0027] In the diagram: 1. Shoulder ball head; 2. Locking screw; 3. Shoulder back plate; 31. Nail hole; 32. Wire hole; 321. Through hole; 322. Partition; 4. Connecting strip; 5. Circular coil; 61. Plate-shaped body; 62. Perforation; 63. Partition; 7. Circular connecting line. Detailed Implementation

[0028] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0029] Please see Figures 1 to 4 As shown, this embodiment provides an artificial shoulder joint prosthesis assembly, including: a glenoid head 1, and a glenoid back plate 3 connected to the glenoid head 1 by a locking screw 2. Preferably, the locking screw 2 penetrates the center of the glenoid head 1 to reliably fix the glenoid head 1 to the glenoid back plate 3. Regarding the glenoid head 1 used in this embodiment, its specific structure and implementation principle are not modified, and therefore its specific application is not limited.

[0030] Based on the above, it should be noted that the shoulder back plate 3 used in this embodiment is as follows:

[0031] Generally, the glenoid plate 3 is adapted to be fixed to the scapula by at least two straps.

[0032] More specifically, to achieve the above effects, firstly, the shoulder back plate 3 is provided with at least two threading holes 32 suitable for one-to-one connection of two wires; referring to the attached drawings, in one example, the shoulder back plate 3 adopts a circular structure; and the center of the shoulder back plate 3 is provided with a nail hole 31 for fitting a locking screw 2. Four threading holes 32 are evenly provided on the circumference of the shoulder back plate 3 around the nail hole 31.

[0033] Each threaded hole 32 includes two adjacent through holes 321 extending axially along the back plate 3 of the shoulder girder and a partition 322 located between the two through holes 321. Optionally, and for ease of manufacturing, each through hole 321 is a circular hole. The connecting band 4 is adapted to pass through a pair of through holes 321 simultaneously so that one end of the ring connecting band 4 is restricted by the partition 322; and the other end of the connecting band 4 is adapted to be tightened and fixed to the side of the back plate 3 facing the shoulder girder ball head 1.

[0034] Secondly, the cable includes a connecting band 4 connected to the back plate 3 of the shoulder girder, an annular coil 5 connected to the end of the connecting band 4 located on the side of the back plate 3 facing away from the head 1 of the shoulder girder, and a looped titanium plate connected to the end of the annular coil 5 away from the connecting band 4.

[0035] The connecting band 4 here can be knotted. However, for the sake of simplifying the operation, the connecting band 4 here can be a wire loop with a nested structure. It is roughly a wire bundle forming a loop, and then two pairs of wire holes are set on the loop. Each pair of wire holes includes two wire holes spaced apart along the enclosing direction of the loop. The two ends of the wire bundle after forming the loop are crossed, so that one end passes around the loop coil 5. Then the two ends are folded back in the opposite direction of forming the loop. During the folding back, each end passes through a pair of wire holes. At this point, the loop can be tightened by pulling the two ends that have passed through a pair of wire holes. This tightening achieves self-locking and prevents the connecting band 4 from loosening from the loop coil 5.

[0036] Based on the above structure, it should also be noted that the looped titanium plate in this embodiment can be directly connected to the annular coil 5, or it can be connected to the annular coil 5 via an annular connecting line 7. This embodiment will be described with reference to the accompanying drawings, taking the case where the looped titanium plate is connected to the annular coil 5 via an annular connecting line 7 as an example. Specifically, the looped titanium plate includes a plate-shaped body 61 and a pair of adjacent through holes 62 disposed on the plate-shaped body 61, and a partition portion 63 located between the pair of through holes 62; the annular connecting line 7 is adapted to pass through both through holes 62 simultaneously, so that one end of the annular connecting line 7 is constrained by the partition portion 63.

[0037] Based on the above, it is also necessary to explain that the looped titanium plate of this embodiment can be hung on the other side of the bone to achieve fixation. As for how the looped titanium plate is hung on the other side of the bone, any mature method in the existing surgical procedure can be used. This embodiment does not make an absolute limitation on this, so the specific operation method in the surgical procedure will not be described.

[0038] In summary, the artificial shoulder joint prosthesis component of this embodiment, through the improvement and optimization of the glenoid structure, can be fixed to the scapula using a cable tie, replacing the screw-fastening method of the prior art. Furthermore, the cable tie, together with the looped titanium plate, can be hung on the other side of the bone to achieve fixation, avoiding the difficulty of installing components on the glenoid side during artificial shoulder joint installation, and also avoiding the problems of screw dislodgement and unreliable fixation caused by traditional structures.

[0039] The above specific embodiments further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above are only specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0040] In the description of this utility model, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0043] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0044] In this invention, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

Claims

1. An artificial shoulder joint prosthesis assembly, characterized in that, include: A shoulder ball head, and a shoulder back plate connected to the shoulder ball head by a locking screw; in The glenoid backplate is adapted to be fixed to the scapula by at least two straps. The shoulder plate is provided with at least two thread holes suitable for one-to-one mating of two wires; The cable includes a connecting strip connected to the back plate of the glenoid fossa, an annular coil connected to the end of the connecting strip on the side of the back plate of the glenoid fossa facing away from the glenoid head, and a looped titanium plate connected to the end of the annular coil away from the connecting strip.

2. The artificial shoulder joint prosthesis assembly according to claim 1, characterized in that, The shoulder girder backplate adopts a circular structure; and The shoulder plate has a screw hole at its center for a locking screw.

3. The artificial shoulder joint prosthesis assembly according to claim 2, characterized in that, The shoulder plate has four threading holes evenly arranged around the circumference of the nail hole.

4. The artificial shoulder joint prosthesis assembly according to claim 1 or 3, characterized in that, Each of the said threading holes includes two adjacent through holes that extend axially along the back plate of the shoulder and a partition between the two through holes.

5. The artificial shoulder joint prosthesis assembly according to claim 4, characterized in that, Each of the aforementioned through holes is a circular hole.

6. The artificial shoulder joint prosthesis assembly according to claim 4, characterized in that, The connecting band is adapted to pass through a pair of through holes simultaneously so that one end of the ring connecting band is restricted by the partition; and The other end of the connecting strap is adapted to be tightened and fixed to the side of the glenoid fossa facing the glenoid ball.

7. The artificial shoulder joint prosthesis assembly according to claim 1, characterized in that, The looped titanium plate is connected to the looped coil via a looped connecting wire.

8. The artificial shoulder joint prosthesis assembly according to claim 7, characterized in that, The looped titanium plate includes a plate-shaped body and a pair of adjacent perforations arranged on the plate-shaped body and a partition located between the pair of perforations; The loop connecting wire is adapted to pass through a pair of holes simultaneously so that one end of the loop connecting wire is restricted to the partition.

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