CN104720938A - Artificial total wrist joint prosthesis made of nickel-titanium memory metal - Google Patents
Artificial total wrist joint prosthesis made of nickel-titanium memory metal Download PDFInfo
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- CN104720938A CN104720938A CN201510165245.4A CN201510165245A CN104720938A CN 104720938 A CN104720938 A CN 104720938A CN 201510165245 A CN201510165245 A CN 201510165245A CN 104720938 A CN104720938 A CN 104720938A
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- metacarpal bone
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Abstract
The invention relates to the technical field of body joint prostheses, in particular to an artificial total wrist joint prosthesis made of nickel-titanium memory metal. According to the structure, the artificial total wrist joint prosthesis comprises a radius handle connected with the radius, the upper end of the radius handle is connected with a radius joint surface, and a ball socket is arranged on the radius joint surface and matched with a polyethylene half ball arranged above the ball socket. A universal locking steel plate is arranged above the polyethylene half ball, the lower end of a metacarpal bone handle is clamped into a clamping groove above the polyethylene half ball in an embedded mode, and the upper end of the metacarpal bone handle sequentially penetrates through the universal locking steel plate and the capitate bone to be connected with the third metacarpal bone cavity and is designed to be shaped like the Arabic number 8, wherein the upper portion of the upper end of the metacarpal bone handle is open. The prosthesis can maintain the anatomical structure of the normal wrist joint, is firmly integrated with the soft tissue well, and is closer to the normal wrist joint in function, the biomechanics is more reasonable, the prosthesis is more stable, loosening is reduced, and the service life is prolonged.
Description
Technical field
The present invention relates to human synovial prosthese technical field, particularly the full carpal joint prosthese of a kind of nickel-titanium memory metal artificial.
Background technology
The patient of the carpal joint pain that artificial full carpal joint prosthese is mainly used in various wound, autoimmune disease, degeneration cause, deformity, afunction, especially arthropathy is involved to the patient in multiple joint, carpal joint major part function can be retrieved, reduce disability rate, improve patients ' life quality.Carpal joint be in human body very flexibly and the most complicated joint, the function played in daily life is maximum.The normal accumulation carpal joint of the immune diseases such as rheumatic arthritis, wound and Working Life apply the damage that the degeneration excessively caused all can cause carpal joint serious.And full carpal joint integration technology general at present can make patient lose almost whole carpal function, especially patient's afunction rate in multiple joint accumulated for pathological changes higher.Full wrist displacement can retain most of carpal function, thoroughly solves the pain of patient and lopsided problem.
US Patent No. 8758445B2, disclose a kind of full carpal joint borrowed structure, its material adopts common metal material, although its radius handle and metacarpal bone handle adopt plug-in type, but similar structures is all fixed bad in radius pulp cavity and Metacarpal medullary cavity, easily deviates from.There is no a kind of full carpal joint prosthetic material is at present application NiTi memory metal, and therefore prosthetic loosening rate after full wrist displacement, unstability, fracture probability are high.Since the artificial full carpal joint application of the first generation, exceeded half a century so far, it is the main factor limiting its development that artificial joint is stablized with persistency always.And patient requires day by day to improve for wrist joint function.Therefore, when current prosthese still can not provide good stability, persistency and provide carpal joint good function, carry out design and the invention of the full carpal joint prosthese of novel artificial, patient can be provided better therapeutic modality, alleviate patient suffering, deformity, disabled probability, greatly improve the quality of life of patient, there is higher medical value clinically.Carpal joint disease can cause deformity, and lose labor life ability, the design of this prosthese can reduce the disability rate of patient, improves patients ' life quality, alleviates family and burden on society, have very high social value.
Summary of the invention
In order to solve the problem of prior art, the invention provides the full carpal joint prosthese of a kind of nickel-titanium memory metal artificial, this prosthese can not only maintain the anatomical structure of normal wrist, well firmly integrate with soft tissue, and functionally closer to normal wrist, biomechanics is more reasonable, the more stable and minimizing of prosthese is got loose, extends the practical time limit.
The technical solution adopted in the present invention is as follows:
The full carpal joint prosthese of a kind of nickel-titanium memory metal artificial, comprise the radius handle for connecting radius, the upper end of radius handle connects oar articular surface, the area of described oar articular surface is greater than the area of section of described radius, described oar articular surface is provided with ball-and-socket, the polyethylene hemisphere arranged above described ball-and-socket and ball-and-socket coincide, the upper table plane of described polyethylene hemisphere is provided with three draw-in grooves, the bottom of difference inlay card memorial alloy screw in the draw-in groove of left and right described in two, the bottom of inlay card metacarpal bone handle in a middle draw-in groove, above described polyethylene hemisphere, universal lock steel plate is set, described universal lock steel plate is arranged respectively two, left and right screw lockhole and a middle metacarpal bone delthyrium, in the draw-in groove of described metacarpal bone handle lower end inlay card above polyethylene hemisphere, the upper end of described metacarpal bone handle is successively through universal lock steel plate, magnum connects metacarpal bone,middle pulp cavity, the upper end of described metacarpal bone handle is designed to the figure of eight of upper opening, described metacarpal bone handle upper end width is a bit larger tham metacarpal bone,middle pulp cavity.
Radius handle is made up of the Ultimum Ti handle of two arcs, and the width after two Ultimum Ti handles close up is a bit larger tham radius pulp cavity internal diameter.
Memorial alloy screw can wave left and right flexibly through after described screw lockhole, and locking is fixed in some angles.
Memorial alloy screw upper end is for being fixed on row's carpal bone far away, and be provided with gap in the middle of the rivet nut upper end of described memorial alloy screw, gap length is about 1/2 of rivet nut length.
The full carpal joint prosthese of nickel-titanium memory metal artificial of the present invention, its prosthetic material selects Ultimum Ti, oar articular surface area is greater than radius area of section, radius pulp cavity internal fixtion is designed to two arc memorial alloy handles, two handle normal widths are a bit larger tham radius pulp cavity size, ice is water-treated by stretching for two handles, implants radius pulp cavity, produces and reach stable object to the pressure of radius pulp cavity inwall when recovering normal shape; Oar articular surface is provided with ball-and-socket, and ball-and-socket shape and polyethylene hemisphere coincide, and polyethylene hemisphere cross section is provided with 3 draw-in grooves, and draw-in groove diameter is less than metacarpal bone handle bottom diameter, screw bottom diameter; Universal lock steel plate is respectively equipped with two the screw lockholes in left and right, metacarpal bone delthyrium, screw can wave left and right flexibly through lockhole, and locking is fixed on an angle; Metacarpal bone handle is used for fixing magnum and metacarpal bone,middle, during use, metacarpal bone handle lower end is successively through universal lock steel plate, magnum, upper end is designed to the figure of eight of upper opening, in like manner width is a bit larger tham metacarpal bone,middle pulp cavity, after frozen water process, metacarpal bone,middle pulp cavity is put in distortion, in the shape process that resiles, the pressure of pulp cavity inwall is reached to the object of stable prosthesis.Hold-down screw is fixed on row's carpal bone far away, hold-down screw is similarly Ultimum Ti, rivet nut medium design has gap, gap length is about acrosome 1/2, after cold water treatment, extruding rivet nut makes gap disappear, and can produce pressure by oppose side wall, increase stability after being fixed on row's carpal bone far away in the shape process that resiles.
The beneficial effect that technical scheme provided by the invention is brought is:
Confirm that nickel-titanium memory adds up to and soft tissue has good synergy through a large amount of clinical experience, more add the stability of prosthese, the fusion of row's carpal bone far away, decreases the activity between each carpal bone and pressure load-bearing, ensures the stablizing effect of prosthese.
The disability rate of patient can be reduced by the design of this prosthese, improve patients ' life quality, alleviate family and burden on society, there is very high social value.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the full carpal joint prosthese of nickel-titanium memory metal artificial of the present invention;
Fig. 2 is the installment state schematic diagram of the full carpal joint prosthese of nickel-titanium memory metal artificial of the present invention.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Embodiment one
As accompanying drawing 1, shown in 2, the full carpal joint prosthese of a kind of nickel-titanium memory metal artificial of the present embodiment, comprise the radius handle 2 for connecting radius 8, the upper end of radius handle 2 connects oar articular surface 1, the area of described oar articular surface 1 is greater than the area of section of described radius 8, described oar articular surface 1 is provided with ball-and-socket 3, the polyethylene hemisphere 4 arranged above described ball-and-socket 3 and ball-and-socket 3 is identical, the upper table plane of described polyethylene hemisphere 4 is provided with three draw-in grooves, the bottom of difference inlay card memorial alloy screw 7 in the draw-in groove of left and right described in two, the bottom of inlay card metacarpal bone handle 6 in a middle draw-in groove, above described polyethylene hemisphere 4, universal lock steel plate 5 is set, described universal lock steel plate 5 is arranged respectively two, left and right screw lockhole and a middle metacarpal bone delthyrium, in the draw-in groove of described metacarpal bone handle 6 lower end inlay card above polyethylene hemisphere 4, the upper end of described metacarpal bone handle 6 is successively through universal lock steel plate 5, magnum 9 connects metacarpal bone,middle pulp cavity 10, the upper end of described metacarpal bone handle 6 is designed to the figure of eight of upper opening, described metacarpal bone handle 6 upper end width is a bit larger tham metacarpal bone,middle pulp cavity 10.
Radius handle 2 is made up of the Ultimum Ti handle of two arcs, and the width after two Ultimum Ti handles close up is a bit larger tham radius 8 pulp cavity internal diameter.
Memorial alloy screw 7 can wave left and right flexibly through after described screw lockhole, and locking is fixed in some angles.
Memorial alloy screw 7 upper end is used for being fixed on row's carpal bone 11 far away, and be provided with gap in the middle of the rivet nut upper end of described memorial alloy screw 7, gap length is about 1/2 of rivet nut length.
The full carpal joint prosthese of nickel-titanium memory metal artificial of the present invention, its prosthetic material selects Ultimum Ti, oar articular surface 1 area is greater than radius 8 area of section, radius 8 pulp cavity internal fixtion is designed to two arc memorial alloy handles, two handle normal widths are a bit larger tham radius 8 pulp cavity size, ice is water-treated by stretching for two handles, implants radius pulp cavity, produces and reach stable object to the pressure of radius pulp cavity inwall when recovering normal shape; Oar articular surface 1 is provided with ball-and-socket 3, and ball-and-socket 3 shape and polyethylene hemisphere 4 coincide, and polyethylene hemisphere 4 cross section is provided with 3 draw-in grooves, and draw-in groove diameter is less than metacarpal bone handle 6 bottom diameter, memorial alloy screw 7 bottom diameter; Universal lock steel plate 5 is respectively equipped with left and right two screw lockholes, metacarpal bone delthyriums, memorial alloy screw 7 can wave left and right flexibly through lockhole, and locking is fixed on an angle; Metacarpal bone handle 6 is for fixing magnum and metacarpal bone,middle, during use, metacarpal bone handle 6 lower end is successively through universal lock steel plate 5, magnum 9, upper end is designed to the figure of eight of upper opening, in like manner width is a bit larger tham metacarpal bone,middle pulp cavity 10, after frozen water process, metacarpal bone,middle pulp cavity 10 is put in distortion, in the shape process that resiles, the pressure of pulp cavity inwall is reached to the object of stable prosthesis.Hold-down screw 7 is fixed on row's carpal bone 11 far away, hold-down screw 7 is similarly Ultimum Ti, rivet nut medium design has gap, gap length is about acrosome 1/2, after cold water treatment, extruding rivet nut makes gap disappear, and can produce pressure by oppose side wall, increase stability after being fixed on row's carpal bone 11 far away in the shape process that resiles.
When treatment is installed and used, by the Proximal row carpectomy of wrist, oar articular surface 1 is placed on radius 8, and a plane is also cut at the position that radius 8 contacts with oar articular surface 1.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. the full carpal joint prosthese of nickel-titanium memory metal artificial, comprise the radius handle for connecting radius, it is characterized in that, the upper end of described radius handle connects oar articular surface, the area of described oar articular surface is greater than the area of section of described radius, described oar articular surface is provided with ball-and-socket, the polyethylene hemisphere arranged above described ball-and-socket and ball-and-socket coincide, the upper table plane of described polyethylene hemisphere is provided with three draw-in grooves, the bottom of difference inlay card memorial alloy screw in the draw-in groove of left and right described in two, the bottom of inlay card metacarpal bone handle in a middle draw-in groove, above described polyethylene hemisphere, universal lock steel plate is set, described universal lock steel plate is arranged respectively two, left and right screw lockhole and a middle metacarpal bone delthyrium, in the draw-in groove of described metacarpal bone handle lower end inlay card above polyethylene hemisphere, the upper end of described metacarpal bone handle is successively through universal lock steel plate, magnum connects metacarpal bone,middle pulp cavity, the upper end of described metacarpal bone handle is designed to the figure of eight of upper opening, described metacarpal bone handle upper end width is a bit larger tham metacarpal bone,middle pulp cavity.
2. the full carpal joint prosthese of a kind of nickel-titanium memory metal artificial according to claim 1, it is characterized in that, described radius handle is made up of the Ultimum Ti handle of two arcs, and the width after two Ultimum Ti handles close up is a bit larger tham radius pulp cavity internal diameter.
3. the full carpal joint prosthese of a kind of nickel-titanium memory metal artificial according to claim 1, is characterized in that, described memorial alloy screw can wave left and right flexibly through after described screw lockhole, and locking is fixed in some angles.
4. the full carpal joint prosthese of a kind of nickel-titanium memory metal artificial according to claim 1, it is characterized in that, described memorial alloy screw upper end is for being fixed on row's carpal bone far away, and be provided with gap in the middle of the rivet nut upper end of described memorial alloy screw, gap length is about 1/2 of rivet nut length.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510165245.4A CN104720938A (en) | 2015-04-09 | 2015-04-09 | Artificial total wrist joint prosthesis made of nickel-titanium memory metal |
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| CN201510165245.4A CN104720938A (en) | 2015-04-09 | 2015-04-09 | Artificial total wrist joint prosthesis made of nickel-titanium memory metal |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105078621A (en) * | 2015-09-21 | 2015-11-25 | 徐永清 | Nickel-titanium alloy artificial total-wrist joint prosthesis with intramedullary barb |
| CN105250055A (en) * | 2015-02-10 | 2016-01-20 | 北京市春立正达医疗器械股份有限公司 | Wrist joint prosthesis |
| CN105434086A (en) * | 2016-02-01 | 2016-03-30 | 中南大学湘雅医院 | Wrist joint implant |
| CN106691634A (en) * | 2016-11-18 | 2017-05-24 | 徐永清 | Wrist joint prosthesis with titanium alloy locking plates |
| CN110693630A (en) * | 2019-10-22 | 2020-01-17 | 北京爱康宜诚医疗器材有限公司 | Wrist joint prosthesis |
| CN112137772A (en) * | 2019-06-28 | 2020-12-29 | 青岛大学附属医院 | Artificial scaphoid of bonding type ball socket joint formula |
| CN113633441A (en) * | 2021-09-15 | 2021-11-12 | 上海市浦东新区公利医院(第二军医大学附属公利医院) | Total trans-wrist joint prosthesis with function of lower ulnar joint reserved |
| CN114224572A (en) * | 2021-12-28 | 2022-03-25 | 中国人民解放军联勤保障部队第九二〇医院 | Wrist joint prosthesis with surface hydroxyapatite HA modified microporous titanium |
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| CN204562467U (en) * | 2015-04-09 | 2015-08-19 | 徐永清 | The full carpal joint prosthese of nickel-titanium memory metal artificial |
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| CN1057580A (en) * | 1990-04-26 | 1992-01-08 | 梅德费洛普有限公司 | A kind of system for reconstructing wrist joints |
| DE69205935T2 (en) * | 1991-09-12 | 1996-04-25 | Tornier Sa | Prosthetic wrist. |
| FR2783702A1 (en) * | 1998-09-29 | 2000-03-31 | Maurice Bertholet | Self-locking prosthesis for bone insert has heat activated anchor flanges formed on central core |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105250055A (en) * | 2015-02-10 | 2016-01-20 | 北京市春立正达医疗器械股份有限公司 | Wrist joint prosthesis |
| CN105078621A (en) * | 2015-09-21 | 2015-11-25 | 徐永清 | Nickel-titanium alloy artificial total-wrist joint prosthesis with intramedullary barb |
| CN105078621B (en) * | 2015-09-21 | 2017-03-01 | 徐永清 | A kind of Nitinol with agnail in marrow manually full carpal joint prosthese |
| CN105434086A (en) * | 2016-02-01 | 2016-03-30 | 中南大学湘雅医院 | Wrist joint implant |
| CN105434086B (en) * | 2016-02-01 | 2017-05-17 | 中南大学湘雅医院 | Wrist joint implant |
| CN106691634A (en) * | 2016-11-18 | 2017-05-24 | 徐永清 | Wrist joint prosthesis with titanium alloy locking plates |
| CN112137772A (en) * | 2019-06-28 | 2020-12-29 | 青岛大学附属医院 | Artificial scaphoid of bonding type ball socket joint formula |
| CN110693630A (en) * | 2019-10-22 | 2020-01-17 | 北京爱康宜诚医疗器材有限公司 | Wrist joint prosthesis |
| CN113633441A (en) * | 2021-09-15 | 2021-11-12 | 上海市浦东新区公利医院(第二军医大学附属公利医院) | Total trans-wrist joint prosthesis with function of lower ulnar joint reserved |
| CN114224572A (en) * | 2021-12-28 | 2022-03-25 | 中国人民解放军联勤保障部队第九二〇医院 | Wrist joint prosthesis with surface hydroxyapatite HA modified microporous titanium |
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