CN105250055A - Wrist joint prosthesis - Google Patents

Wrist joint prosthesis Download PDF

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Publication number
CN105250055A
CN105250055A CN201510736046.4A CN201510736046A CN105250055A CN 105250055 A CN105250055 A CN 105250055A CN 201510736046 A CN201510736046 A CN 201510736046A CN 105250055 A CN105250055 A CN 105250055A
Authority
CN
China
Prior art keywords
interfacing
broach
carpal joint
radius
wrist joint
Prior art date
Application number
CN201510736046.4A
Other languages
Chinese (zh)
Inventor
史春宝
解凤宝
张朝锋
徐祥祥
裴福兴
Original Assignee
北京市春立正达医疗器械股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority to CN201510069678.XA priority Critical patent/CN104605963A/en
Priority to CN201510069678X priority
Application filed by 北京市春立正达医疗器械股份有限公司 filed Critical 北京市春立正达医疗器械股份有限公司
Priority to CN201510736046.4A priority patent/CN105250055A/en
Publication of CN105250055A publication Critical patent/CN105250055A/en

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Abstract

The invention discloses a wrist joint prosthesis which can be implanted within an injured wrist joint to replace the injured wrist joint. The wrist joint prosthesis includes a wrist joint intramedullary pin (1), wherein one end of the wrist joint intramedullary pin (1) is fixed on the metacarpal bone, and the other end thereof is connected with an interfacing (3); the interfacing (3) is provided with a spherical bulge (32); one end of a radius intramedullary pin (4) is fixed on the radius, and the other end thereof is provided with a spherical groove (41); the spherical groove (41) partially surrounds the bulge (32) of the interfacing (3); the interfacing (3) can rotate in the groove (41) through the bulge (32) and further movably rotate relative to the radius intramedullary pin (4); the radius intramedullary pin (4) can rotate relative to the wrist joint intramedullary pin (1) through the interfacing (3). With the wrist joint prosthesis provided by the invention, the bending, stretching, spreading, withdrawing and circumduction movements of the wrist joint are recovered, and the prosthesis conforms to the physiology of the wrist joint, so that the patient can move freely as usual; as the wrist joint prosthesis intramedullary pin is matched with the wrist joint interfacing, the wrist joint prosthesis has the characteristics of being safe and flexible, simple to mount, stable in structure and high in dislocation resistance.

Description

Carpal joint prosthese

Technical field

The present invention relates to a kind of artificial joint prosthesis, particularly relate to a kind of displacement and there is the carpal carpal joint prosthese of disease.

Background technology

Carpal joint, is also called radiocarpal joint, is typical ellipsoid joint, and by the proximal joint face of the nut bone of hands, lunar and triquetrum as ball and socket joint, the meniscus below the carpal articular surface of radius and head of ulna is formed as glenoid fossa.Loosening of articular capsule, the forward and backward and both sides in joint all have ligament to strengthen, and wherein palmar ligaments is the most tough and tensile, so stretch limitation of movement after wrist.

Radiocarpal joint can be bent, stretch, open up, receive and circumduction, carpal joint is the most complicated joint of human body, numerous disease or wound can cause carpal chronic pain and afunction, as rheumatoid arthritis, traumatic arthritis, osteoarthritis, suppurative arthritis tumor carpal joint etc.Current Therapeutic Method mainly contains fusion of wrist joint, does not have artificial joint for wrist's prosthese to replace joint motion.

Carpal joint needs accurate to install fixing, need identical osteotomy site, otherwise there will be excessive wear and bone resorption during installation, for needing a large amount of amputation radius, all cannot replace carpal joint.

Summary of the invention

The object of the present invention is to provide that a kind of Stability Analysis of Structures, anti-dislocation are strong, the carpal joint prosthese of flexible rotating.

For achieving the above object, the concrete technical scheme of a kind of carpal joint prosthese of the present invention is:

A kind of carpal joint prosthese, for implanting in damage carpal joint, displacement has the carpal joint of disease, and comprise carpal joint broach, one end of carpal joint broach is fixed on metacarpal bone, and the other end is connected with interfacing, and interfacing has hemisphere jut; One end of radius broach is fixed on radius, and the other end has ball recess, and groove part surrounds the projection of interfacing, and interfacing can be rotated relative to the activity of radius broach by protruding rotation in groove, and radius broach rotates mutually by interfacing and carpal joint broach.

The advantage of carpal joint prosthese of the present invention is:

1) can limb be protected, recover carpal and bend, stretch, open up, receive and circumduction, meet carpal physiology, enable patient move freely as original;

2) carpal joint prosthese broach matches with carpal joint interfacing, and safety flexibly;

3) feature such as simple installation, Stability Analysis of Structures, anti-dislocation be strong.

Accompanying drawing explanation

Fig. 1 is the structural representation of carpal joint prosthese of the present invention.

Detailed description of the invention

In order to better understand object of the present invention, structure and function, below in conjunction with accompanying drawing, further detailed description is done to carpal joint prosthese of the present invention.

As shown in Figure 1, it shows for carpal joint prosthese of the present invention, for implanting in damage carpal joint, displacement has the carpal joint of disease, comprise carpal joint broach 1, one end of carpal joint broach 1 is by cement reaction on the metacarpal bone of sufferer, and the other end is fixedly connected with interfacing 3, and interfacing 3 has spherical projection 32; One end of radius broach 4 is fixed on radius, the other end has spherical groove 41, protruding 32 can be contained in groove 41, interfacing 3 rotates can rotate relative to radius broach 4 activity by protruding 32 in groove 41, radius broach 4 rotates mutually by interfacing 3 and carpal joint broach 1, with make carpal joint can do in the wrong, stretch, open up, receive and circumduction, the patient implanting carpal joint prosthese can recover picture originally freely move.It should be noted, in the present invention, interfacing 3 is made up of superhigh molecular weight polyethylene material.

Further, carpal joint broach 1 connect with interfacing 3 contravention both sides on be provided with through hole, the opening of through hole is circular arc, opening is towards interfacing 3, fixture 2 can pass through hole and rotate relative to carpal joint broach 1, to regulate the position of mating with metacarpal joint to be fixed, fixedly secure carpal joint broach 1, ensure prosthese stability.Wherein, interfacing 3 connect with carpal joint broach 1 contravention surface on be provided with shrinkage pool 31, the head of fixture 2 can be held in shrinkage pool 31.Wherein, the fixture in the present invention can select Universal screw nail, but is not limited in Universal screw nail, can reach the fixture being fixedly connected with interfacing 3 and carpal joint broach 1 and all be applicable to the present invention.

Further, carpal joint broach 1 is in cross, carpal joint broach 1 is provided with aciculiform projection 11 away from one end of interfacing 3, carpal joint broach 1 to be inserted in metacarpal bones by aciculiform protruding 11 and by cement reaction to be fixed in sufferer, further, carpal joint broach 1 one end face contacted with interfacing 3 is plane.

In addition, carpal joint broach 1 protrudes near one end of interfacing 3 and is provided with projection 12, projection 12 is for inserting in interfacing 3 by carpal joint broach 1, the outer surface of projection is provided with annular inserted sheet 13, the inner surface of interfacing 3 is provided with the annular groove (not shown) that can hold inserted sheet 13, carpal joint broach 1 and interfacing 3 to be fixed together in the annular groove that the annular inserted sheet 13 of carpal joint broach 1 can insert interfacing 3.

Further, radius broach 4 is in Y type, and the one end near interfacing 3 on radius broach 4 is provided with the groove 41 that can hold interfacing 3 hemisphere jut, and the other end protrudes and is provided with aciculiform projection 42, and radius broach 4 inserts on radius by protruding 42 to be fixed in patient.Wherein, one end near radius broach 4 on interfacing 3 is hemisphere jut 32, sphere in sphere on the groove 41 of radius broach and the projection 32 of interfacing 3 matches, interfacing 3 passes through the groove 41 inward turning phase inversion of projection 32 at radius broach for radius broach 4 rotary motion, interfacing 3 can rotate mutually with radius broach 4, by increasing the range of activity of interfacing and carpal joint broach and radius broach, to expand carpal range of activity, sufferer can be freely movable, unrestricted, meet the range of activity of human synovial.In addition, the hemisphere jut face on interfacing 3 and the groove sphere of radius broach are burnishing surface, reduce the surface roughness of sphere, reduce wear and the generation of wear particle, more flexible to make interfacing 3 rotate in the groove of radius broach 4.

Further, the bore of the projection 32 of interfacing 3 is less than the radius of the groove 41 of radius broach 4, groove 41 part surrounds protruding 32, projection 32 is not all coated in groove 41, groove and projection are concentric circular, groove surrounds protruding according to certain ratio, and the proportion that the groove 41 of radius broach 4 surrounds the projection 32 of interfacing 3 is 1/4-3/4.

Carpal joint prosthese of the present invention, can protect limb, recovers carpal and bend, stretches, opens up, receives and circumduction, meet carpal physiology, enable patient move freely as original; Carpal joint prosthese broach matches with carpal joint interfacing, and safety flexibly; The feature such as simple installation, Stability Analysis of Structures, anti-dislocation are strong.

Further describe invention has been by specific embodiment above; but it should be understood that; here concrete description; should not be construed as the restriction to the spirit and scope of the invention; one of ordinary skilled in the art to the various amendments that above-described embodiment is made, belongs to the scope that the present invention protects after reading this specification.

Claims (10)

1. a carpal joint prosthese, for implanting in damage carpal joint, displacement has the carpal joint of disease, it is characterized in that, comprise carpal joint broach (1), one end of carpal joint broach (1) is fixed on metacarpal bone, and the other end is connected with interfacing (3), and interfacing (3) has hemisphere jut (32); One end of radius broach (4) is fixed on radius, the other end has ball recess (41), groove (41) part surrounds the projection (32) of interfacing (3), interfacing (3) is rotated can be rotated relative to radius broach (4) activity by protruding (32) in groove (41), and radius broach (4) rotates mutually by interfacing (3) and carpal joint broach (1).
2. carpal joint prosthese according to claim 1, it is characterized in that, carpal joint broach (1) connect with interfacing contravention both sides on be provided with through hole, the opening of through hole is curved, fixture (2) can pass through hole and rotate relative to carpal joint broach (1), is fixed to regulate the position of mating with metacarpal bone.
3. carpal joint prosthese according to claim 2, is characterized in that, fixture (2) adopts Universal screw nail.
4. carpal joint prosthese according to claim 1, it is characterized in that, carpal joint broach (1) is in cross, carpal joint broach (1) is provided with aciculiform projection (11) away from one end of interfacing (3), and carpal joint broach (1) to be inserted in metacarpal bone by aciculiform projection (11) and by cement reaction to be fixed in sufferer.
5. carpal joint prosthese according to claim 1, it is characterized in that, the upper one end near interfacing (3) of carpal joint broach (1) is provided with projection (12), projection (12) is for inserting in interfacing (3) by carpal joint broach (1), the outer surface of projection is provided with annular inserted sheet (13), the inner surface of interfacing (3) is provided with the annular groove that can hold inserted sheet (13), so that carpal joint broach (1) and interfacing (3) are fixed together in the annular groove that the annular inserted sheet (13) of carpal joint broach (1) can insert interfacing (3).
6. carpal joint prosthese according to claim 1, it is characterized in that, radius broach (4) is in Y type, the upper one end near interfacing (3) of radius broach (4) is provided with the groove (41) that can hold interfacing (3) hemisphere jut, the other end protrudes and is provided with aciculiform projection (42), and radius broach (4) is inserted on radius by protruding (42) to be fixed in patient.
7. carpal joint prosthese according to claim 6, it is characterized in that, the upper one end near radius broach (4) of interfacing (3) is hemisphere jut (32), sphere in sphere on the groove (41) of radius broach (4) and the projection (32) of interfacing (3) matches, interfacing (3) by protruding (32) at groove (41) the inward turning phase inversion of radius broach for radius broach (4) rotary motion.
8. the carpal joint prosthese according to claim 6 or 7, is characterized in that, the sphere of the hemisphere jut (32) on interfacing (3) and the sphere of radius broach (4) upper groove (41) are burnishing surface.
9. carpal joint prosthese according to claim 1, is characterized in that, interfacing (3) is made up of superhigh molecular weight polyethylene material.
10. carpal joint prosthese according to claim 1, is characterized in that, the aciculiform projection (11) of carpal joint broach (1) by cement reaction on metacarpal bone.
CN201510736046.4A 2015-02-10 2015-11-03 Wrist joint prosthesis CN105250055A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201510069678.XA CN104605963A (en) 2015-02-10 2015-02-10 Wrist joint prosthesis
CN201510069678X 2015-02-10
CN201510736046.4A CN105250055A (en) 2015-02-10 2015-11-03 Wrist joint prosthesis

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510736046.4A CN105250055A (en) 2015-02-10 2015-11-03 Wrist joint prosthesis

Publications (1)

Publication Number Publication Date
CN105250055A true CN105250055A (en) 2016-01-20

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CN201510736046.4A CN105250055A (en) 2015-02-10 2015-11-03 Wrist joint prosthesis

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10485671B2 (en) 2017-03-13 2019-11-26 Ali Moradi Prosthesis for distal radioulnar joint

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4003096A (en) * 1975-06-17 1977-01-18 Sulzer Brothers Limited Wrist joint endoprosthesis
US4784661A (en) * 1985-11-22 1988-11-15 Robert Beckenbaugh Total wrist prosthesis
US5314485A (en) * 1991-09-12 1994-05-24 Etablissements Tornier Total prosthesis of the wrist
US20040117025A1 (en) * 2002-09-18 2004-06-17 Reindel Eric S. Wrist implant apparatus and method
US20050085921A1 (en) * 2003-07-22 2005-04-21 Amitava Gupta Prosthetic wrist implant
US20060161260A1 (en) * 2003-12-23 2006-07-20 Gareth Thomas Total wrist prosthesis
CN101708139A (en) * 2009-05-31 2010-05-19 天津市威曼生物材料有限公司 Ball-and-socket type wrist joint prosthesis device
CN104720938A (en) * 2015-04-09 2015-06-24 徐永清 Artificial total wrist joint prosthesis made of nickel-titanium memory metal

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4003096A (en) * 1975-06-17 1977-01-18 Sulzer Brothers Limited Wrist joint endoprosthesis
US4784661A (en) * 1985-11-22 1988-11-15 Robert Beckenbaugh Total wrist prosthesis
US5314485A (en) * 1991-09-12 1994-05-24 Etablissements Tornier Total prosthesis of the wrist
US20040117025A1 (en) * 2002-09-18 2004-06-17 Reindel Eric S. Wrist implant apparatus and method
US20050085921A1 (en) * 2003-07-22 2005-04-21 Amitava Gupta Prosthetic wrist implant
US20060161260A1 (en) * 2003-12-23 2006-07-20 Gareth Thomas Total wrist prosthesis
CN101708139A (en) * 2009-05-31 2010-05-19 天津市威曼生物材料有限公司 Ball-and-socket type wrist joint prosthesis device
CN104720938A (en) * 2015-04-09 2015-06-24 徐永清 Artificial total wrist joint prosthesis made of nickel-titanium memory metal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10485671B2 (en) 2017-03-13 2019-11-26 Ali Moradi Prosthesis for distal radioulnar joint

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Application publication date: 20160120