CN104434344A - Bendable joint prosthesis - Google Patents
Bendable joint prosthesis Download PDFInfo
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- CN104434344A CN104434344A CN201410838010.2A CN201410838010A CN104434344A CN 104434344 A CN104434344 A CN 104434344A CN 201410838010 A CN201410838010 A CN 201410838010A CN 104434344 A CN104434344 A CN 104434344A
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- prosthesis
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- prosthesis head
- handle
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Abstract
The invention discloses a bendable joint prosthesis. The joint prosthesis is used in digital joint or toe joint operation and comprises an implantation body (1), a thick and large prosthesis head (11) is formed at the middle position of the implantation body (1), conical prosthesis handles (12) are formed at two ends of the prosthesis head (11), abrasion-resisting washers (2) are arranged at the connecting positions of the prosthesis head (11) and the conical prosthesis handles (12) in the implantation body (1), are arranged on the prosthesis handles (12) in a sleeving mode and cover the connecting faces between the prosthesis head (11) and the conical prosthesis handles (12) so as to prevent a bone bed from abrading the prosthesis head (11). The washers are arranged between the human body bone and the prosthesis, have a good abrasion-resisting characteristic and can protect the prosthesis and prevent the prosthesis from being scratched by the bond, and meanwhile produced abrasion particles are also decreased.
Description
Technical field
The present invention relates to a kind of artificial joint prosthesis, particularly relate to a kind of for point or toe can flexing articular prosthesis.
Background technology
Human body finger joint prosthesis is used to carry out metacarpophalangeal joints, proximal interphalangeal joint and the plastic operation of far-end articulations digitorum manus.As shown in Figure 1, a kind of existing finger joint prosthesis, this finger joint prosthesis is the single part be made up of silicone rubber.
Although above-mentioned existing finger joint prosthesis structure is simple, uses reliable, also there is many defects.Specifically, when implanting above-mentioned finger joint prosthesis, easily wear and tear between prosthese and sclerotin, thus produce prosthese granule.We know, when movable implanting prosthetic contacts with sclerotin, wearing and tearing to a certain degree will occur.Under the External Force Acting of normal biomechanical, will there is clinical visible heavy wear in prosthese, and under improper or excessive External Force Acting, its degree of wear also can increase further.
Summary of the invention
The object of the present invention is to provide a kind of safe and reliable, practical, anti abrasive can flexing articular prosthesis.
For achieving the above object, of the present inventionly can the concrete technical scheme of flexing articular prosthesis be:
One can flexing articular prosthesis, be used in reference in joint or toe joint operation, comprise implantation body, the middle position implanting body is formed with thick prosthesis head, the two ends of prosthesis head are formed with tapered prosthesis handle, prosthesis head in implantation body and the junction of prosthesis handle are provided with wear washer, and wear washer is set on prosthesis handle and the composition surface covered between prosthesis head and prosthesis handle, to prevent bone bed to the wearing and tearing of prosthesis head.
Of the present inventionly can to have the following advantages by flexing articular prosthesis:
1) prosthetic material in implanted human body is silicone rubber and titanium alloy material, and these materials have good biocompatibility;
2) between human body bone and prosthese, arrange packing ring, packing ring has good wear-resistant property, can protect prosthese, avoids prosthese to be scratched by sclerotin, decreases the generation of wear particle simultaneously;
3) prosthese and packing ring do not need closely to fix with sclerotin, the prosthese of flexing can easily reach good rotation axis and stress distribution;
4) medical silicone elastomeric material has very low elastic modelling quantity, can reduce the untoward reaction such as osteonecrosis or bone resorption, and after surgery, the bone density of cortical bone generally all can increase;
5) hinge arrangement in prosthese has the equilibrium response of intensity and bendable curvature, has suitable pressure-connect stress distribution in the middle part of prosthese.
Accompanying drawing explanation
Fig. 1 is the front view of existing finger joint prosthesis;
Fig. 2 be of the present invention can the front view of flexing articular prosthesis;
Fig. 3 be of the present invention can the side view of flexing articular prosthesis.
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 can be done by flexing articular prosthesis to one of the present invention.
As shown in Figures 2 and 3, of the present inventionly can be used in reference in joint or toe joint operation by flexing articular prosthesis, comprise and implant body 1, implant the middle position of body 1 and be formed with thick prosthesis head 11, the two ends of prosthesis head 11 are formed with tapered prosthesis handle 12.Wherein, the prosthesis head 11 implanted in body 1 is provided with wear washer 2 with the junction of prosthesis handle 12, and wear washer 2 is set on the prosthesis handle 12 and composition surface covered between prosthesis head 11 and prosthesis handle 12.In addition, preferably, the prosthesis head 11 implanted in body 1 is respectively provided with a wear washer 2 with the junction of the prosthesis handle 12 at two ends.Thus, implantation body 1 can be isolated with human body bone by wear washer 2, causes wearing and tearing to prevent bone bed to prosthesis head 11.
Further, implant body 1 and be preferably made up of silicone rubber, wear washer 2 is preferably made up of titanium alloy material, and wherein, silicone rubber and titanium alloy all have good biocompatibility, to adapt to human internal environment.In addition, the implantation body 1 in the present invention is made up of the silicone rubber of low elastic modulus, and do not formed closely fixing with sclerotin, stress can be distributed to osteotomy end and backbone effectively, thus protection sclerotin and cortex backbone.
Because prosthese is not fixed on sclerotin in the present invention, therefore on the compression stress end that directly acts on sclerotin and cortical bone, thus contribute to the normal reconstruction of sclerotin, the length maintaining bone, the profile keeping bone and cortical thickness, also be conducive to Periprosthetic and form new bone, and overhaul, prosthese take out, joint strengthen or absent-mindedness, rebuild joint capsule-ligamentary system all become be easy to operation.In addition, packing ring in the present invention and human body osteotomy are not what grow together, therefore compressive stress can well be delivered to osteotomy end, simultaneously, use packing ring also can not affect the function of prosthese, indication and the contraindication of operation can not be changed, also can not reduce the requirement to arthroplasty surgical technic.
Further, implant in the prosthesis head 11 in body 1 and the buckling structure that promising implantation body 1 provides flex ability is set.In the present embodiment, implant body 1 and there is elasticity, the sidewall of the prosthesis head 11 in implantation body 1 is formed with curved slot 13, implant body 1 to bend from the curved slot 13 in prosthesis head 11, specifically, curved slot 13 extends from the side wall surface of prosthesis head 11 to the inner transverse of prosthesis head 11, and development length crosses the longitudinal centre line implanting body 1.Certainly, the buckling structure in the present invention also can adopt other warp architectures conventional in this area, as hinge arrangement etc., as long as can realize the flex of implanting body 1.
The slight flex of the implantation body in the present invention is conducive to the normal distribution of stress, and be also beneficial to the buckling structure implanting body simultaneously and reach suitable rotation axis measurement, thus can increase service life, the untoward reaction of prosthese-bone interface also can reduce.
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 (6)
1. one kind can flexing articular prosthesis, be used in reference in joint or toe joint operation, comprise and implant body (1), the middle position implanting body (1) is formed with thick prosthesis head (11), the two ends of prosthesis head (11) are formed with tapered prosthesis handle (12), it is characterized in that, implant the prosthesis head (11) in body (1) and the junction of prosthesis handle (12) is provided with wear washer (2), wear washer (2) is set in prosthesis handle (12) and goes up and cover the composition surface between prosthesis head (11) and prosthesis handle (12), to prevent bone bed to the wearing and tearing of prosthesis head (11).
2. according to claim 1 can flexing articular prosthesis, it is characterized in that, implant the prosthesis head (11) in body (1) and be respectively provided with a wear washer (2) with the junction of the prosthesis handle (12) at two ends.
3. according to claim 1 can flexing articular prosthesis, it is characterized in that, implant in the prosthesis head (11) in body (1) and the buckling structure that promising implantation body (1) provides flex ability is set.
4. according to claim 3 can flexing articular prosthesis, it is characterized in that, implant body (1) and there is elasticity, the sidewall of the prosthesis head (11) in implantation body (1) is formed with curved slot (13), and implanting body (1) can bend from the curved slot (13) in prosthesis head (11).
5. according to claim 4 can flexing articular prosthesis, it is characterized in that, curved slot (13) extends from the side wall surface of prosthesis head (11) to the inner transverse of prosthesis head (11), and development length crosses the longitudinal centre line implanting body (1).
6. according to claim 1 can flexing articular prosthesis, it is characterized in that, implant body (1) and be made up of silicone rubber, wear washer (2) is made up of titanium alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410838010.2A CN104434344A (en) | 2014-12-29 | 2014-12-29 | Bendable joint prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410838010.2A CN104434344A (en) | 2014-12-29 | 2014-12-29 | Bendable joint prosthesis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104434344A true CN104434344A (en) | 2015-03-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410838010.2A Pending CN104434344A (en) | 2014-12-29 | 2014-12-29 | Bendable joint prosthesis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104434344A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106344218A (en) * | 2016-08-31 | 2017-01-25 | 嘉思特华剑医疗器材(天津)有限公司 | Buckling digit joint prosthesis assembly |
| CN110368145A (en) * | 2019-08-05 | 2019-10-25 | 北京爱康宜诚医疗器材有限公司 | Finger joint prosthesis |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3739403A (en) * | 1970-10-09 | 1973-06-19 | F Nicolle | Prosthetic joint having a tissue ingrowth preventive capsule |
| US4246662A (en) * | 1979-06-07 | 1981-01-27 | Zimmer Usa, Inc. | Prosthetic joint |
| EP0042808A1 (en) * | 1980-06-19 | 1981-12-30 | Georges Gauthier | Prosthetic joint |
| CN1047025A (en) * | 1989-04-25 | 1990-11-21 | 佩-英格瓦·布兰尼马克 | Be used to support finger-joint or other is repaired the retaining element of the articulation mechanism in joint |
| US5824095A (en) * | 1996-04-26 | 1998-10-20 | E. I. Du Pont De Nemours And Company | Anatomically neutral joint |
| US6319284B1 (en) * | 2000-05-31 | 2001-11-20 | Futura Biomedical Llc | Toe implant |
| WO2005067822A1 (en) * | 2004-01-17 | 2005-07-28 | Gareth Thomas | A flexible finger implant |
| CN1964680A (en) * | 2004-06-01 | 2007-05-16 | Pios生物技术有限公司 | A joint prosthesis, use of such and a method for the application of a joint prosthesis |
| WO2009112865A1 (en) * | 2008-03-14 | 2009-09-17 | Invibio Limited | Implantable prosthesis |
| CN204521060U (en) * | 2014-12-29 | 2015-08-05 | 北京市春立正达医疗器械股份有限公司 | Can flexing articular prosthesis |
-
2014
- 2014-12-29 CN CN201410838010.2A patent/CN104434344A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3739403A (en) * | 1970-10-09 | 1973-06-19 | F Nicolle | Prosthetic joint having a tissue ingrowth preventive capsule |
| US4246662A (en) * | 1979-06-07 | 1981-01-27 | Zimmer Usa, Inc. | Prosthetic joint |
| EP0042808A1 (en) * | 1980-06-19 | 1981-12-30 | Georges Gauthier | Prosthetic joint |
| CN1047025A (en) * | 1989-04-25 | 1990-11-21 | 佩-英格瓦·布兰尼马克 | Be used to support finger-joint or other is repaired the retaining element of the articulation mechanism in joint |
| US5824095A (en) * | 1996-04-26 | 1998-10-20 | E. I. Du Pont De Nemours And Company | Anatomically neutral joint |
| US6319284B1 (en) * | 2000-05-31 | 2001-11-20 | Futura Biomedical Llc | Toe implant |
| WO2005067822A1 (en) * | 2004-01-17 | 2005-07-28 | Gareth Thomas | A flexible finger implant |
| CN1964680A (en) * | 2004-06-01 | 2007-05-16 | Pios生物技术有限公司 | A joint prosthesis, use of such and a method for the application of a joint prosthesis |
| WO2009112865A1 (en) * | 2008-03-14 | 2009-09-17 | Invibio Limited | Implantable prosthesis |
| CN204521060U (en) * | 2014-12-29 | 2015-08-05 | 北京市春立正达医疗器械股份有限公司 | Can flexing articular prosthesis |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106344218A (en) * | 2016-08-31 | 2017-01-25 | 嘉思特华剑医疗器材(天津)有限公司 | Buckling digit joint prosthesis assembly |
| CN110368145A (en) * | 2019-08-05 | 2019-10-25 | 北京爱康宜诚医疗器材有限公司 | Finger joint prosthesis |
| CN110368145B (en) * | 2019-08-05 | 2024-04-12 | 北京爱康宜诚医疗器材有限公司 | Finger joint prosthesis |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150325 |