CN202036368U - Pressurized endosseous implant body in artificial limb bone - Google Patents
Pressurized endosseous implant body in artificial limb bone Download PDFInfo
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- CN202036368U CN202036368U CN2011200742499U CN201120074249U CN202036368U CN 202036368 U CN202036368 U CN 202036368U CN 2011200742499 U CN2011200742499 U CN 2011200742499U CN 201120074249 U CN201120074249 U CN 201120074249U CN 202036368 U CN202036368 U CN 202036368U
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- marrow
- artificial limb
- bone
- endosome
- pressurized
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Abstract
A pressurized endosseous implant body in an artificial limb bone comprises a hollow inner marrow body with internal threads and a lower end having a mushroom-shaped structure. A hollow cavity at the upper end in the inner marrow body is internally provided with a traction rod with a disk spring; one end of the traction rod, extending out of the inner marrow body, is connected with an inner marrow fixing piece by threads; and hole channels which are correspondingly staggered with cortex nails are arranged at the side surface of the inner marrow fixing piece. The pressurized endosseous implant body in the artificial limb bone can be firmly fixed by using a inner pressurized spring, and effectively solves the problem of mechanics compatibility of the bone and an implanting body simultaneously, thus preventing the implanting body from being subject to aseptic loosening caused by a situation that bone absorption can be caused by a stress shielding effect under the condition that the implanting body is in an implanting state for a long time.
Description
Technical field
This utility model 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 purpose of this utility model is to provide a kind of and can overcomes present stage and implant the bone and the difficult problem of implant mechanical compatibility that exists in the property artificial limb, and is 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 adopted in the utility model 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 utility model offers the anti-groove that revolves of umbrella shape; Marrow endosome, marrow internal fixation spare are titanium alloy material.
This utility model 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 utility model.
Fig. 2 is a marrow endosome structural representation of the present utility model.
Fig. 3 is an anchor shape body structure sketch map of the present utility model.
Fig. 4 is a pressurization draw bar structural representation of the present utility model.
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 this utility model is described in further detail.
Referring to Fig. 1,2,3,4, this utility model comprises anchor shape body (being made up of marrow internal fixation spare 2 and cortex nail 4), pressurization draw bar (being made up of draw bar 3 and disk spring 5), the marrow endosome 1 that connects successively.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 |
|---|---|---|---|
| CN2011200742499U CN202036368U (en) | 2011-03-23 | 2011-03-23 | Pressurized endosseous implant body in artificial limb bone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200742499U CN202036368U (en) | 2011-03-23 | 2011-03-23 | Pressurized endosseous implant body in artificial limb bone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202036368U true CN202036368U (en) | 2011-11-16 |
Family
ID=44963843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200742499U Expired - Lifetime CN202036368U (en) | 2011-03-23 | 2011-03-23 | Pressurized endosseous implant body in artificial limb bone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202036368U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102247228A (en) * | 2011-03-23 | 2011-11-23 | 中国人民解放军第四军医大学 | Pressurized endosseous implant prosthesis |
| CN106821473A (en) * | 2017-01-13 | 2017-06-13 | 四川大学华西医院 | Condyle joint supporting device |
-
2011
- 2011-03-23 CN CN2011200742499U patent/CN202036368U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102247228A (en) * | 2011-03-23 | 2011-11-23 | 中国人民解放军第四军医大学 | Pressurized endosseous implant prosthesis |
| CN102247228B (en) * | 2011-03-23 | 2013-03-20 | 中国人民解放军第四军医大学 | Pressurized endosseous implant prosthesis |
| CN106821473A (en) * | 2017-01-13 | 2017-06-13 | 四川大学华西医院 | Condyle joint supporting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20111116 Effective date of abandoning: 20130320 |
|
| RGAV | Abandon patent right to avoid regrant |