CN210277412U - Medical artificial ulnar and radial joint prosthesis - Google Patents
Medical artificial ulnar and radial joint prosthesis Download PDFInfo
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- CN210277412U CN210277412U CN201920234205.4U CN201920234205U CN210277412U CN 210277412 U CN210277412 U CN 210277412U CN 201920234205 U CN201920234205 U CN 201920234205U CN 210277412 U CN210277412 U CN 210277412U
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Abstract
The utility model relates to a medical artificial ulna-superior radial joint prosthesis, which comprises a ulna-superior radial joint base, a radius head liner support, an artificial radius head and an artificial radius prosthesis handle; the upper ulnar joint base is used for being connected and fixed with an ulna, and the upper end of the upper ulnar joint base is provided with a first accommodating groove matched with the radial head gasket support; the radius head gasket support is embedded in the accommodating groove, and the upper end of the radius head gasket support is provided with a second accommodating groove corresponding to the artificial radius head; the artificial radius head is arranged in the second accommodating groove and can rotate relative to the radius head gasket support; the artificial radius prosthesis handle is of a vertically arranged rod-shaped structure, the upper end of the artificial radius prosthesis handle penetrates through the ulnar joint base and the radius head liner support in sequence and then is detachably connected with the middle of the lower end of the artificial radius head, and the lower end of the artificial radius prosthesis handle is used for being inserted along a radius medullary cavity and being connected and fixed with a radius. The advantages are that: the structural design is reasonable, and the device can be effectively used for the congenital ulnar and radial joint fusion surgical treatment, and can reconstruct the ulnar and radial joint and recover the forearm rotation function.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, in particular to medical artificial ulnar and radial joint prosthesis.
Background
Congenital ulnar-radial joint fusion is a rare disease which is mainly characterized in that the proximal ends of the radius and the ulna are in bony connection, so that the forearm is fixed in the antepronation position and can not be supinated. Described first by Sani ford in 1973. The disease is a congenital disease with unknown reason, and patients often combine congenital dysgenesis of the supinator muscle and even lack the congenital dysgenesis of the supinator muscle, so the effect of a simple separation operation is not satisfactory, and the re-fusion is easy to occur. The existing operation modes can not restore the normal ulnar and radial joint structure, and a few scholars can only restore partial functions or have the problems of unstable joints and the like by adopting operation treatment.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a medical artificial ulnar and radial joint prosthesis, which effectively overcomes the defects of the prior art.
The utility model provides an above-mentioned technical problem's technical scheme as follows: a medical artificial ulnar joint prosthesis comprises an ulnar joint base, a radius head pad support, an artificial radius head and an artificial radius prosthesis handle; the upper ulnar joint base is used for being connected and fixed with an ulna, and the upper end of the upper ulnar joint base is provided with a first accommodating groove matched with the radial head pad support; the radius head gasket support is embedded in the accommodating groove, and the upper end of the radius head gasket support is provided with a second accommodating groove corresponding to the artificial radius head; the artificial radius head is arranged in the second accommodating groove and can rotate relative to the radius head gasket support; the artificial radius prosthesis handle is of a vertically arranged rod-shaped structure, the upper end of the artificial radius prosthesis handle penetrates through the ulnar joint base and the radius head gasket support in sequence and then is detachably connected with the middle of the lower end of the artificial radius head, and the lower end of the artificial radius prosthesis handle is used for being inserted along a radius medullary cavity and being connected and fixed with a radius.
The utility model has the advantages that: the structural design is reasonable, and the device can be effectively used for the congenital ulnar and radial joint fusion surgical treatment, and can reconstruct the ulnar and radial joint and recover the forearm rotation function.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
Further, the upper ulnar joint base is of a cylindrical structure, a connecting strip extending outwards along the horizontal direction is integrally formed on the outer side wall of the upper ulnar joint base, a plurality of hole sites are arranged on the connecting strip at intervals along the extending direction of the connecting strip, each hole site is fixedly connected with an ulna through a medical screw penetrating through the hole site, the first accommodating groove is a cylindrical groove coaxially arranged with the upper ulnar joint base, and the corresponding radial head gasket support is of a cylindrical structure.
The beneficial effect of adopting above-mentioned further scheme is that can make the radius joint base realize good, stable location with the size fixedly.
Further, above-mentioned second holding tank is the round platform shape cell body of holding in the palm coaxial setting with above-mentioned radius head liner, and its cross sectional area is crescent from bottom to top, and above-mentioned artificial radius head is the cylinder structure to with the coaxial setting of above-mentioned second holding tank.
The beneficial effects of adopting the above-mentioned further scheme are that reasonable in design does benefit to the rapid Assembly of artifical radius head.
Further, a threaded hole is coaxially formed in the middle of the lower end of the artificial radius head, the artificial radius prosthesis handle is a round rod, threads are formed in the periphery of the upper end of the artificial radius prosthesis handle, and the upper end of the artificial radius prosthesis handle is detachably screwed with the threaded hole.
The beneficial effects of adopting above-mentioned further scheme are that reasonable in design can realize the quick assembly disassembly combination of artificial radius head and artificial radius false body handle.
Further, the ulnar joint base is a titanium alloy base.
The further scheme has the advantages of high specific strength, mechanical property close to that of human bones, strength far superior to that of pure titanium, fatigue resistance, corrosion resistance, excellent biocompatibility and the like.
Further, the radius head gasket support is made of high polymer polyethylene material.
Adopt the beneficial effect of above-mentioned further scheme to be wearability and self-lubricating nature performance preferred.
Further, the artificial radius head is a nano ceramic bone.
The further scheme has the advantages that the affinity with biological tissues is excellent; anti-thrombosis; has good sterilization performance and good physical and chemical stability.
Further, the artificial radius prosthesis handle is a titanium alloy prosthesis.
The further scheme has the advantages of high specific strength, mechanical property close to that of human bones, strength far superior to that of pure titanium, fatigue resistance, corrosion resistance, excellent biocompatibility and the like.
Drawings
FIG. 1 is an exploded view of the artificial superior ulnar radial joint prosthesis for medical use according to the present invention;
fig. 2 is a schematic structural view of the artificial ulnar-radial joint prosthesis for medical use of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. the artificial radius prosthesis comprises an ulnar radial joint base, 2 a radius head gasket support, 3 an artificial radius head, 4 an artificial radius prosthesis handle, 11 and a connecting strip.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
Example (b): as shown in fig. 1 and 2, the medical artificial ulnar joint prosthesis of the present embodiment includes an ulnar joint base 1, a radius head spacer 2, an artificial radius head 3, and an artificial radius prosthesis stem 4; the upper ulnar joint base 1 is used for being connected and fixed with an ulna, and the upper end of the upper ulnar joint base is provided with a first accommodating groove matched with the radius head gasket support 2; the radius head gasket support 2 is embedded in the accommodating groove, and the upper end of the radius head gasket support is provided with a second accommodating groove corresponding to the artificial radius head 3; the artificial radius head 3 is arranged in the second accommodating groove and can rotate relative to the radius head gasket support 2; the artificial radius prosthesis handle 4 is a vertically arranged rod-shaped structure, the upper end of the artificial radius prosthesis handle penetrates through the ulnar joint base 1 and the radius head gasket support 2 in sequence and then is detachably connected with the middle of the lower end of the artificial radius head 3, and the lower end of the artificial radius prosthesis handle is used for being inserted along a radius medullary cavity and being connected and fixed with a radius.
Whole structure includes artificial radius head 3 and artificial radius false body handle 4 from forearm near-end to distal end, and artificial radius head 3 holds in radius head liner holds in the palm 2, and radius head liner holds in the palm 2 gomphosis in ulnar joint base 1 to artificial radius head 3 replaces human radius front end joint, is connected with the radius through artificial radius false body handle 4, with this normal rotation that realizes whole radius, can effectually be used for congenital operation treatment of ulnar joint fusion, and can rebuild the ulnar joint and resume forearm rotation function.
Preferably, the upper radius joint base 1 is a cylindrical structure, the outer side wall of the upper radius joint base is integrally formed with a connecting strip 11 extending outwards along the horizontal direction of the upper radius joint base, the connecting strip 11 is provided with a plurality of hole sites at intervals along the extending direction of the connecting strip, each hole site is fixedly connected with the ulna through a medical screw penetrating through the hole site, the first accommodating groove is a cylindrical groove coaxial with the upper radius joint base 1, and the corresponding radius head gasket support 2 is of a cylindrical structure, so that the design is favorable for stable connection and fixation of the upper radius joint base 1 and the ulna.
The connecting strip 11 is generally a strip-shaped and vertically arranged sheet-shaped structure, and is fixed on the front side and the ulnar side of the ulna.
The preferred, above-mentioned second holding tank is the round platform shape cell body with the coaxial setting of above-mentioned radius head liner support 2, and its cross sectional area is crescent from bottom to top, above-mentioned artificial radius head 3 is the cylinder structure, and with the coaxial setting of above-mentioned second holding tank, during the installation, whole artificial radius head 3 holds in the second holding tank of radius head liner support 2 from the top down, the round platform shape design of radius head liner support 2 does benefit to artificial radius head 3's quick installation combination, it is rotatory for the ulna also to do benefit to follow-up artificial radius head 3 agent radius front end joint.
Preferably, the middle part of the lower end of the artificial radius head 3 is coaxially provided with a threaded hole, the artificial radius prosthesis handle 4 is a round rod, the periphery of the upper end of the artificial radius prosthesis handle is provided with threads, the upper end of the artificial radius prosthesis handle 4 is detachably screwed with the threaded hole, and the design is favorable for quick assembly and disassembly combination of the artificial radius head 3 and the artificial radius prosthesis handle 4.
Preferably, the ulnar joint base 1 is a titanium alloy base, has high specific strength, mechanical properties close to those of human bones, strength far superior to that of pure titanium, fatigue resistance, corrosion resistance, excellent biocompatibility and the like.
Preferably, the radius head gasket support 2 is made of a high-molecular polyethylene material, and has good wear resistance and self-lubricating performance.
Preferably, the artificial radius head 3 is a nano ceramic bone body, and has excellent affinity with biological tissues; anti-thrombosis; has good sterilization performance and good physical and chemical stability.
Preferably, the artificial radius prosthesis handle 4 is a titanium alloy prosthesis, has high specific strength, mechanical properties close to those of human bones, strength far superior to that of pure titanium, fatigue resistance, corrosion resistance, excellent biocompatibility and the like.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (8)
1. A medical artificial ulnar-radial joint prosthesis is characterized in that: comprises an ulnar joint base (1), a radius head pad support (2), an artificial radius head (3) and an artificial radius prosthesis handle (4);
the upper ulnar joint base (1) is used for being connected and fixed with an ulna, and the upper end of the upper ulnar joint base is provided with a first accommodating groove matched with the radial head lining support (2);
the radius head gasket support (2) is embedded in the accommodating groove, and the upper end of the radius head gasket support is provided with a second accommodating groove corresponding to the artificial radius head (3);
the artificial radius head (3) is arranged in the second accommodating groove and can rotate relative to the radius head gasket support (2);
the artificial radius prosthesis handle (4) is of a vertically arranged rod-shaped structure, the upper end of the artificial radius prosthesis handle penetrates through the upper ulnar joint base (1) and the radius head gasket support (2) in sequence and then is detachably connected with the middle of the lower end of the artificial radius head (3), and the lower end of the artificial radius prosthesis handle is used for being inserted along a radius medullary cavity and is fixedly connected with a radius.
2. The medical artificial ulnar joint prosthesis according to claim 1, wherein: go up ulnar joint base (1) is cylindric structure, integrated into one piece is equipped with along its level outside extending connecting strip (11) on its lateral wall, connecting strip (11) are gone up and are equipped with a plurality of hole sites along its extending direction interval, every hole site department all is connected fixedly with the ulna through the medical screw that runs through it, first holding tank be with go up the cylindric groove of ulnar joint base (1) coaxial setting, corresponding radius head liner holds in the palm (2) and is cylindric structure.
3. The medical artificial ulnar joint prosthesis according to claim 2, wherein: the second holding tank is a circular truncated cone-shaped tank body which is coaxial with the radius head gasket support (2), the cross section area of the second holding tank is gradually increased from bottom to top, and the artificial radius head (3) is of a cylindrical structure and is coaxial with the second holding tank.
4. The medical artificial ulnar joint prosthesis according to claim 3, wherein: the middle part of the lower end of the artificial radius head (3) is coaxially provided with a threaded hole, the artificial radius prosthesis handle (4) is a round rod, the periphery of the upper end of the artificial radius prosthesis handle is provided with threads, and the upper end of the artificial radius prosthesis handle (4) is detachably screwed with the threaded hole.
5. The medical artificial ulnar joint prosthesis according to any one of claims 1 to 4, wherein: the ulnar joint base (1) is a titanium alloy base.
6. The medical artificial ulnar joint prosthesis according to any one of claims 1 to 4, wherein: the radius head gasket support (2) is made of high-molecular polyethylene.
7. The medical artificial ulnar joint prosthesis according to any one of claims 1 to 4, wherein: the artificial radius head (3) is a nano ceramic bone body.
8. The medical artificial ulnar joint prosthesis according to any one of claims 1 to 4, wherein: the artificial radius prosthesis handle (4) is a titanium alloy prosthesis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920234205.4U CN210277412U (en) | 2019-02-25 | 2019-02-25 | Medical artificial ulnar and radial joint prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920234205.4U CN210277412U (en) | 2019-02-25 | 2019-02-25 | Medical artificial ulnar and radial joint prosthesis |
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| CN210277412U true CN210277412U (en) | 2020-04-10 |
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| CN201920234205.4U Active CN210277412U (en) | 2019-02-25 | 2019-02-25 | Medical artificial ulnar and radial joint prosthesis |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109745154A (en) * | 2019-02-25 | 2019-05-14 | 唐欣 | A kind of medical artificial proximal radioulnar joint prosthese |
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2019
- 2019-02-25 CN CN201920234205.4U patent/CN210277412U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109745154A (en) * | 2019-02-25 | 2019-05-14 | 唐欣 | A kind of medical artificial proximal radioulnar joint prosthese |
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