CN203468800U

CN203468800U - Hinge-type shoulder joint prosthesis

Info

Publication number: CN203468800U
Application number: CN201320530260.0U
Authority: CN
Inventors: 于刚
Original assignee: Beijing AK Medical Co Ltd
Current assignee: Beijing AK Medical Co Ltd
Priority date: 2013-08-28
Filing date: 2013-08-28
Publication date: 2014-03-12
Anticipated expiration: 2023-08-28

Abstract

The utility model provides a hinge-type shoulder joint prosthesis. The hinge-type shoulder joint prosthesis comprises a humerus handle and a humeral head, wherein the humerus handle comprises a humerus handle far-end part and a humerus handle near-end part; the humerus handle far-end part is hinged to the humerus handle near-end part; and the humeral head is connected with the humerus handle near-end part. According to the hinge-type shoulder joint prosthesis employing the technical scheme of the utility model, the humerus handle is formed by hinging and connecting the humerus handle far-end part with the humerus handle near-end part and angles of the humerus handle near-end part and the humerus handle far-end part can be adjusted freely, so that the adjustment of angles of the humeral head and the humerus handle can be realized. In other words, the adjustment of the collodiaphyseal angle can be realized. The collodiaphyseal angle can be adjusted freely as required, thereby enabling the prosthesis to be closer to the anatomical structure of the human shoulder joint, making the postoperative effect better, and allowing the shoulder activity range to be larger.

Description

Hinge type shoulder joint prosthesis

Technical field

This utility model relates to bone surgery implant, in particular to the hinge type shoulder joint prosthesis using in a kind of shoulder joint replacement operation.

Background technology

Omarthritis, head of humerus necrosis, serious fracture of the humeral head are common shoulder joint orthopaedic diseases, and it is quite ripe with the technology for the treatment of right-hand man head necrosis, omarthritis, fracture of the humeral head that modern medicine is implemented shoulder joint replacement operation.In the early-stage cases of shoulder joint displacement, because the collodiaphyseal angle between old-fashioned artificial head of humerus and humerus handle prosthese is nonadjustable, this makes the prosthese of replacing can better not realize dissection performance, thereby affects the mobility of shoulder joint after Rehabilitation.

Medical circle has several method for addressing the above problem, as carried out better Design by iconography, design more rational implant angle more similar to human dissection form by effect after selecting the humeral head replacement etc. of eccentric function to realize to implant again.But the angle that still can not realize between head of humerus and humerus handle can free adjustment.

Utility model content

This utility model aims to provide a kind of hinge type shoulder joint prosthesis, can not free adjustment to solve collodiaphyseal angle between artificial head of humerus of the prior art and humerus handle prosthese, and make the prosthese of displacement can better not realize the problem of dissecting performance.

To achieve these goals, this utility model provides a kind of hinge type shoulder joint prosthesis, comprising: humerus handle, comprise humerus handle far-end part and humerus handle near-end part, and humerus handle far-end part and humerus handle near-end part are hinged; Head of humerus, is connected with humerus handle near-end part.

Further, on humerus handle near-end part, offer column pin hole, on humerus handle far-end part, offer hinge hole, pin is hinged by humerus handle far-end part and humerus handle near-end part through column pin hole and hinge hole.

Further, on humerus handle far-end part, slot is set, the projection coordinating with slot is set on humerus handle near-end part.

Further, also comprise that screw connects humerus handle near-end part and humerus handle far-end part, the relative position of fastening humerus handle near-end part and humerus handle far-end part.

Further, screw is through humerus handle near-end part butt humerus handle far-end part.

Further, the hole that column pin hole and screw pass is separately positioned on the opposite end of humerus handle near-end part.

Further, head of humerus is connected by taper hole with humerus handle near-end part.

Further, the projection of taper type is set on humerus handle near-end part, the taper hole coordinating with projection is set on head of humerus.

Further, on humerus handle far-end part, offer the elongated slot with screw fit.

Further, between the centre of sphere of head of humerus and the axis extended line of humerus handle near-end part, there is offset distance.

The hinge type shoulder joint prosthesis of application the technical solution of the utility model, humerus handle is formed by humerus handle far-end part and humerus handle near-end part chain connection, humerus handle near-end part and humerus handle far-end part angle can free adjustment, and the adjusting that realizes head of humerus and humerus handle angle is the adjusting of collodiaphyseal angle.Collodiaphyseal angle is free adjustment as required, makes prosthese more approach the anatomical structure of patient's shoulder joint, makes postoperative effect better, and shoulder activity reaches larger scope.

Accompanying drawing explanation

The Figure of description that forms the application's a part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining this utility model, does not form improper restriction of the present utility model.In the accompanying drawings:

Fig. 1 shows the combination schematic diagram of hinge type shoulder joint prosthesis of the present utility model; And

Fig. 2 shows the decomposing schematic representation of hinge type shoulder joint prosthesis of the present utility model.

Description of reference numerals: 1, hinge type shoulder joint prosthesis; 2, humerus handle; 3, humerus handle far-end part; 4, humerus handle near-end part; 5, pin; 6, screw; 7, head of humerus.

The specific embodiment

It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments this utility model in detail.

Shown in Fig. 1 and Fig. 2, this utility model provides a kind of hinge type shoulder joint prosthesis that can be used for shoulder joint displacement.Hinge type shoulder joint prosthesis comprises humerus handle 2 and head of humerus 7, humerus handle 2 is comprised of pin 5 chain connections humerus handle far-end part 3 and humerus handle near-end part 4, head of humerus 7 is joined locking with humerus handle near-end part 4 by cone and is fixed together, screw 6 is connected with humerus handle near-end part 4, through hole and humerus handle far-end part 3 butts on humerus handle near-end part 4, the angle of lockable humerus handle far-end part 3 and humerus handle near-end part 4, prevents relative sliding.Degree of tightness by screw 6 at diverse location, can regulate the angle between humerus handle near-end part 4 and humerus handle far-end part 3, thereby realize head of humerus 7, is the adjusting of collodiaphyseal angle with the adjusting of humerus handle 2 angles.This kind of prosthese can, better according to different patients' physiological structure, regulate the angle of head of humerus and humerus handle to make prosthese more approach the anatomical structure of patient's shoulder joint.Make postoperative effect better, shoulder activity reaches larger scope.

Shown in Figure 2, particularly, on humerus handle near-end part 4, offer column pin hole, in the position away from column pin hole, offer screw hole.On humerus handle far-end part 3, have hinge hole, pin 5 is through the column pin hole on humerus handle near-end part 4 and the hinge hole on humerus handle far-end part 3, and humerus handle far-end part 3 and humerus handle near-end part 4 is hinged.Hole and humerus handle far-end part 3 butts that screw 6 passes on humerus handle near-end part 4, the angle of lockable humerus handle far-end part 3 and humerus handle near-end part 4.Column pin hole and be separately positioned on the opposite end of humerus handle near-end part 4 through the hole of screw 6.Preferably, on humerus handle far-end part 3, can offer an elongated slot, coordinate with screw 6.

Preferably, in order firmly coordinating, can on humerus handle near-end part 4, projection to be set, and on humerus handle far-end part 3, slot to be set, projection and slot form fit.

Preferably, head of humerus 7 inner conical surfaces of this utility model hinge type shoulder joint prosthesis and humerus handle 2 upper end cone match, tapering is 5 ° 46 ', this tapering can be realized head of

humerus

7 and 2 lockings of humerus handle, the taper type projection with certain taper is stretched out in humerus handle near-end part 4 upper ends, joins locking with the internal taper hole cone on head of humerus 7.The centre of sphere of head of humerus 7 is not on the axis of head of humerus 7 taper holes, and with certain offset distance, when head of humerus 7 is rotated, head of humerus 7 has multiple relative position with humerus handle 2.

Described hinge type shoulder joint prosthesis adopts medical metal to make, and described medical metal includes but not limited to titanium or titanium alloy, cobalt alloy, rustless steel and tantalum metal, magnesium alloy.

The processing method of hinge type shoulder joint prosthesis 1 of the present utility model is: hot investment casting, welding, machine cut, electric discharge machine-shaping etc.

As can be seen from the above description, this utility model has been realized following technique effect:

1. humerus handle is formed by pin chain connection by humerus handle far-end part and humerus handle near-end part, head of humerus and humerus handle near-end are joined locking by cone, screw is connected with humerus handle near-end part, the angle of lockable humerus handle far-end part and humerus handle near-end part, the adjusting that the adjusting by humerus handle near-end part and humerus handle far-end part angle can realize head of humerus and humerus handle angle is the adjusting of collodiaphyseal angle.

2. hinge type shoulder joint prosthesis of the present utility model, the upper end cone match of head of humerus inner conical surface and humerus handle, tapering is 5 ° 46 ', this tapering can be realized head of humerus and the locking of humerus handle, the centre of sphere of head of humerus is not on the axis of head of humerus taper hole, with certain offset distance, when head of humerus is rotated, head of humerus and humerus handle have multiple relative position.

The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model, for a person skilled in the art, this utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.

Claims

1. a hinge type shoulder joint prosthesis, is characterized in that, comprising:

Humerus handle (2), comprises humerus handle far-end part (3) and humerus handle near-end part (4), and described humerus handle far-end part (3) is hinged with described humerus handle near-end part (4);

Head of humerus (7), is connected with described humerus handle near-end part (4).

2. hinge type shoulder joint prosthesis according to claim 1, it is characterized in that, on described humerus handle near-end part (4), offer column pin hole, on described humerus handle far-end part (3), offer hinge hole, pin (5) is hinged by described humerus handle far-end part (3) and described humerus handle near-end part (4) through described column pin hole and described hinge hole.

3. hinge type shoulder joint prosthesis according to claim 2, is characterized in that, on described humerus handle far-end part (3), slot is set, at the upper projection coordinating with described slot that arranges of described humerus handle near-end part (4).

4. hinge type shoulder joint prosthesis according to claim 2, it is characterized in that, also comprise, screw (6), connect described humerus handle near-end part (4) and described humerus handle far-end part (3), the relative position of fastening described humerus handle near-end part (4) and described humerus handle far-end part (3).

5. hinge type shoulder joint prosthesis according to claim 4, is characterized in that, described screw (6) is through humerus handle far-end part (3) described in described humerus handle near-end part (4) butt.

6. hinge type shoulder joint prosthesis according to claim 5, is characterized in that, the hole that described column pin hole and described screw (6) pass is separately positioned on the opposite end of described humerus handle near-end part (4).

7. hinge type shoulder joint prosthesis according to claim 1, is characterized in that, described head of humerus (7) is connected by taper hole with described humerus handle near-end part (4).

8. hinge type shoulder joint prosthesis according to claim 7, is characterized in that, the projection of taper type is set on described humerus handle near-end part (4), the upper taper hole coordinating with described projection that arranges of described head of humerus (7).

9. hinge type shoulder joint prosthesis according to claim 4, is characterized in that, offers the elongated slot coordinating with described screw (6) on described humerus handle far-end part (3).

10. hinge type shoulder joint prosthesis according to claim 1, is characterized in that, between the centre of sphere of described head of humerus (7) and the axis extended line of described humerus handle near-end part (4), has offset distance.