CN102247228A - Pressurized endosseous implant prosthesis - Google Patents
Pressurized endosseous implant prosthesis Download PDFInfo
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- CN102247228A CN102247228A CN2011100716253A CN201110071625A CN102247228A CN 102247228 A CN102247228 A CN 102247228A CN 2011100716253 A CN2011100716253 A CN 2011100716253A CN 201110071625 A CN201110071625 A CN 201110071625A CN 102247228 A CN102247228 A CN 102247228A
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- marrow
- implant
- endosome
- draw bar
- pressurized
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Abstract
The invention discloses a pressurized endosseous implant prosthesis, which comprises a hollow in-marrow body with internal threads, wherein the lower end of the in-marrow body has a mushroom-like structure; a draw bar with a belleville spring is arranged in a hollow cavity in the upper end of the in-marrow body; the end, which extends out of the in-marrow body, of the draw bar is connected with an in-marrow fixing piece through threads; and the side face of the in-marrow fixing piece has staggered pores matched with a cortical nail. In the invention, the pressurized endosseous implant prosthesis is firmly fixed by an internal pressurizing spring, the mechanical compatibility problem of the bone and the implant is solved effectively, and thus, the sclerotin absorption by the implant in a long-term implant state due to a stress shielding effect leads to sterile looseness of the implant is solved.
Description
Technical field
The invention belongs to biomedical engineering field, be specifically related to a kind ofly can solve bone after adult's limbs amputation and implant the pressing type artificial limb endosteal implant that the property artificial limb is rebuild bone and an implant mechanical compatibility difficult problem in the deformed limb technology, making amputation is not only the operation of a damage type but beginning that function is reproduced.
Background technology
When having to amputation because of infection, wound, malignant tumor etc., it is the first-selection of patients with amputation that artificial limb is rebuild deformed limb.Yet modern accept the cavate prosthesis technique and exist the defective that some are difficult to overcome self, be connected as negative-pressure type between deformed limb and the receptive cavity and make receptive cavity and deformed limb interface breathability difference easily produce abnormal flavour; Friction causes the deformed limb ulceration to cause infection owing to bear a heavy burden; And the load-bearing mode does not meet the body biomechanics feature, artificial limb gait difference etc.
The property implanted artificial limb has been broken away from traditional receptive cavity mode, by endosteal implant the mechanical loading under the human physiological activity is directly delivered to the stump bone, its biomechanical characterization more approaches naturalness, be to recover human body deformed limb function comprehensively, most promising new design is the focus of area researches such as present biomaterial, plastic surgery, orthopaedics.But the mechanical compatibility problem of bone and implant especially shows under the life-time service because stress shielding causes the absorption of sclerotin to cause the difficult problem in the implant failure still unresolved.
Summary of the invention
The object of the present invention is to provide a kind ofly can overcome present stage and implant the bone and the difficult problem of implant mechanical compatibility that exists in the property artificial limb, and be applicable to that adult thighbone amputation bone implants the pressing type artificial limb endosteal implant of property artificial limb reconstruction deformed limb function.This pressing type endosteal implant can well solve the problem that the stress occlusion effect causes the absorption of sclerotin to lead to the failure in the implant life-time service process.
For achieving the above object, the technical solution used in the present invention is: comprise that the lower end is the hollow tapped marrow endosome of mushroom-shaped structure, be provided with the draw bar of band disk spring in the hollow cavity in the upper end of marrow endosome, the end that draw bar stretches out the marrow endosome links to each other with marrow internal fixation spare through screw thread, and the side of marrow internal fixation spare offers the staggered duct that adapts with the cortex nail.
The upper end of mushroom-shaped structure of the present invention offers the anti-groove that revolves of umbrella shape; Marrow endosome, marrow internal fixation spare are titanium alloy material.
The present invention is provided with the pressue device that a disk spring combines in mushroom marrow endosome inside, can be when providing endosteal implant instant stable, make and produce a permanent pressure load between implant-bone interface, reproducing of stimulation interface osseous tissue with moulding, it has solved the difficult problem of bone and implant mechanical compatibility significantly effectively in addition, thereby the long-time stability and the practicality of this implant have further been improved, for condition has been created in the application and the popularization of the bone property implanted artificial limb.
Description of drawings
Fig. 1 is an overall structure sketch map of the present invention.
Fig. 2 is a marrow endosome structural representation of the present invention.
Fig. 3 is an anchor shape body structure sketch map of the present invention.
Fig. 4 is a pressurization draw bar structural representation of the present invention.
1. marrow endosomes among the figure, 2. marrow internal fixation spare, 3. draw bar, 4. cortex nail, 5. disk spring, 6. mushroom-shaped structure, the 7. anti-groove that revolves of umbrella shape.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
Referring to Fig. 1,2,3,4, the present invention includes the anchor shape body (forming), pressurization draw bar (forming), the marrow endosome 1 that connect successively by draw bar 3 and disk spring 5 by marrow internal fixation spare 2 and cortex nail 4.Wherein the cylindrical marrow internal fixation spare 2 in subsidiary five parallel staggered ducts, side is fixed in the femoral bone cavitas medullaris by the cortex nail 4 composition anchor shape bodies that penetrate the bilateral cortical bone.Marrow endosome 1 lower end is a mushroom-shaped structure 6, and marrow endosome 1 is hollow tapped structure, be provided with the draw bar 3 of band disk spring 5 in the hollow cavity in the upper end of marrow endosome 1, the end that draw bar 3 stretches out marrow endosome 1 links to each other with marrow internal fixation spare 2 through screw thread, and the side of marrow internal fixation spare 2 offers the staggered duct that adapts with cortex nail 4.Draw bar 3 with marrow endosome 1 be fixed in anchor shape bulk phase in the pulp cavity and connect pressurization and fixing marrow endosome 1, the umbrella shape channel form structure and the bone stump of marrow endosome 1 are joined, one permanent pressure load between marrow endosome 1-bone interface is provided, stimulate reproducing and plasticity of interface osseous tissue, organize much smaller than surrounding bone because of the elastic modelling quantity of its internal pressurization spring simultaneously, so when being subjected to axial load, stress is born by the high cortical bone of elastic modelling quantity, thereby avoid the generation of stress shielding, fundamentally solved the problem of bone and implant mechanical compatibility.
Claims (3)
1. pressing type artificial limb endosteal implant, it is characterized in that: comprise that the lower end is the hollow tapped marrow endosome (1) of mushroom-shaped structure (6), be provided with the draw bar (3) of band disk spring (5) in the hollow cavity in upper end of marrow endosome (1), the end that draw bar (3) stretches out marrow endosome (1) links to each other with marrow internal fixation spare (2) through screw thread, and the side of marrow internal fixation spare (2) offers the staggered duct that adapts with cortex nail (4).
2. pressing type artificial limb endosteal implant according to claim 1 is characterized in that: the upper end of described mushroom-shaped structure (6) offers the anti-groove (7) that revolves of umbrella shape.
3. pressing type artificial limb endosteal implant according to claim 1 is characterized in that: described marrow endosome (1), marrow internal fixation spare (2) are titanium alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110071625 CN102247228B (en) | 2011-03-23 | 2011-03-23 | Pressurized endosseous implant prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110071625 CN102247228B (en) | 2011-03-23 | 2011-03-23 | Pressurized endosseous implant prosthesis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102247228A true CN102247228A (en) | 2011-11-23 |
| CN102247228B CN102247228B (en) | 2013-03-20 |
Family
ID=44975045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110071625 Expired - Fee Related CN102247228B (en) | 2011-03-23 | 2011-03-23 | Pressurized endosseous implant prosthesis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102247228B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106618816A (en) * | 2016-11-22 | 2017-05-10 | 中国人民解放军第四军医大学 | Novel prosthetic limb connecting device |
| CN108670502A (en) * | 2018-05-24 | 2018-10-19 | 大博医疗科技股份有限公司 | A kind of femoral stem and femoral hip joint prosthesis of femoral hip joint prosthesis |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5389107A (en) * | 1992-05-11 | 1995-02-14 | Antoine A. Nassar | Shock absorbent prosthetic hip joint |
| US6447295B1 (en) * | 1999-04-15 | 2002-09-10 | Nobel Biocare Ab | Diamond-like carbon coated dental retaining screws |
| US20080058957A1 (en) * | 2004-03-12 | 2008-03-06 | Newcombe Lindsay K | Prosthetic Limb Attachment |
| US20100010629A1 (en) * | 2008-07-08 | 2010-01-14 | Bhansali Sanjay A | Dynamic Ossicular Prosthesis |
| CN202036368U (en) * | 2011-03-23 | 2011-11-16 | 中国人民解放军第四军医大学 | Pressurized endosseous implant body in artificial limb bone |
-
2011
- 2011-03-23 CN CN 201110071625 patent/CN102247228B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5389107A (en) * | 1992-05-11 | 1995-02-14 | Antoine A. Nassar | Shock absorbent prosthetic hip joint |
| US6447295B1 (en) * | 1999-04-15 | 2002-09-10 | Nobel Biocare Ab | Diamond-like carbon coated dental retaining screws |
| US20080058957A1 (en) * | 2004-03-12 | 2008-03-06 | Newcombe Lindsay K | Prosthetic Limb Attachment |
| US20100010629A1 (en) * | 2008-07-08 | 2010-01-14 | Bhansali Sanjay A | Dynamic Ossicular Prosthesis |
| CN202036368U (en) * | 2011-03-23 | 2011-11-16 | 中国人民解放军第四军医大学 | Pressurized endosseous implant body in artificial limb bone |
Non-Patent Citations (1)
| Title |
|---|
| 陈国景等: "钛合金经皮植入式假肢骨内固定植入体表面经生物陶瓷改性后与骨整合的研究", 《科学技术与工程》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106618816A (en) * | 2016-11-22 | 2017-05-10 | 中国人民解放军第四军医大学 | Novel prosthetic limb connecting device |
| CN108670502A (en) * | 2018-05-24 | 2018-10-19 | 大博医疗科技股份有限公司 | A kind of femoral stem and femoral hip joint prosthesis of femoral hip joint prosthesis |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102247228B (en) | 2013-03-20 |
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