CN203252770U - Low-elasticity-modulus medical bone replacement hip joint grip - Google Patents
Low-elasticity-modulus medical bone replacement hip joint grip Download PDFInfo
- Publication number
- CN203252770U CN203252770U CN 201320289903 CN201320289903U CN203252770U CN 203252770 U CN203252770 U CN 203252770U CN 201320289903 CN201320289903 CN 201320289903 CN 201320289903 U CN201320289903 U CN 201320289903U CN 203252770 U CN203252770 U CN 203252770U
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- CN
- China
- Prior art keywords
- handle body
- bone
- bone replacement
- grip
- handle
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- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
- Materials For Medical Uses (AREA)
Abstract
The utility model relates to a low-elasticity-modulus medical bone replacement hip joint grip which comprises a head (1), a neck (2) and a grip body (3). The utility model is characterized in that the grip body (3) is in a hollow structure, the surface of the grip body (3) is provided with a plurality of through hole structures (4), and the hollow part in the grip body (3) is communicated with the outside of the grip body (3) through the through hole structures (4); and the grip body (3) is provided with a porous tantalum part. The utility model is provided with the porous tantalum part structure which can enable the bone to grow inward, so that the internal growth structure can be conveniently formed in the later period and organically combined with the human bone tissue into an integral body; and the total elasticity modulus of the grip is very close to that of the human bone, thereby postponing or avoiding the degeneration of the bone more effectively, and further preventing the looseness between the artificial hip joint grip and the bone.
Description
Technical field
This utility model relates to medical domain bone displacement transplanting and uses artificial bone, relates in particular to a kind of medical science bone replacement hip joints handle of low elastic modulus.
Background technology
Clinical medicine is treated hip joint that various hip joint disease late periods such as a variety of causes such as femur head necrosis, osteoarthritis cause when destroying, generally adopt the method for hip replacement surgery, the hip joint made of implantable artificial in vivo, to rebuild the anatomical structure of human hip, and make it obtain normal mechanical property to finish certain physiological function, reach thus alleviating pain, improve the purpose of function.Artificial hip joint is to be made of the first-class parts of femoral stem, acetabular cup and femur, wherein femoral stem is as the link that connects human femur under loading and human body far-end, play fixing and supporting role in human body, its structural design and material property are directly connected to the therapeutic effect of hip replacement surgery.But material used in the prior art mostly is rustless steel, titanium alloy etc., there is common defective in arranging like this: 1, existing selecting with structure of artificial hip joint stem arranges the certain defective of upper existence, cause it can occur repelling with tissue after long-time the use, biocompatibility is relatively poor and affect its service life.2, elastic modelling quantity is too high, is 110～120GPa such as titanium alloy, and rustless steel is then up to more than the 200GPa; But the elastic modelling quantity of cortical bone and spongy bone only has respectively about 15GPa and 1.5GPa.Therefore, the prothesis implant body mechanical property and the osseous tissue that adopt above-mentioned material to make can't mate mutually, and high elastic modulus can make implant, and the load that the Periprosthetic osseous tissue bears is too small, and then cause and bone resorption, osteanabrosis and disuse osteoporosis finally cause prosthetic loosening.
The utility model content
The purpose of this utility model is to provide a kind of medical science bone replacement hip joints handle of low elastic modulus, and the elastic modelling quantity of this hip joint stalk and people's bone are very approaching, and be strong with the skeleton matching, Stability Analysis of Structures, has good biocompatibility concurrently.
The purpose of this utility model is achieved in that
A kind of medical science bone replacement hip joints handle of low elastic modulus, it comprises head, cervical region and handle body, it is characterized in that: described handle body is hollow structure, and the handle surface is provided with a plurality of through-hole structures, keeps being communicated with by this through-hole structure with the handle external body to guarantee handle body inner hollow part; Described handle body is set to the porous tantalum product.
Above-mentioned head and above-mentioned cervical region are that titanium alloy is one-body molded, and realize and being fixedly connected with of handle body by welding.
Above-mentioned handle body adopts the porous tantalum product, and its porosity is 60～70%.This porous tantalum product can adopt the preparations such as foam dipping method, die pressing.Find that through studying for a long period of time the porous tantalum product in the biocompatibility that has greatly improved artificial hip joint stem, has also well satisfied its mechanical property, greatly improved its service life and implanted comfort level.
Be filled with the broken osseous granules from body or allosome in the hollow structure of above-mentioned handle body, the broken osseous granules fusion growth of filling in outside osseous tissue and the handle body is integral when to be used, its overall elastic modelling quantity can be very approaching with people's bone, and then more effectively delay or avoid sclerotin to degenerate to prevent between artificial hip joint stem and sclerotin to occur loosening.
The surfaces externally and internally of above-mentioned handle body has hydroxyapatite coating layer, so that it has the function of inducing bone cell growth.
The utlity model has following beneficial effect:
The medical science bone replacement hip joints handle of the low elastic modulus in this utility model, has the porous tantalum product structure that bone is inwardly grown into, be beneficial to the later stage structure of growing in forming, organically combine as a whole with body bone tissue, and its overall elastic modelling quantity can be very approaching with people's bone, and then more effectively delay or avoid sclerotin to degenerate to prevent between artificial hip joint stem and sclerotin to occur loosening.In addition, the coarse coefficient of friction of its outer surface is high, and stable connection between the human body bone structure, not only greatly improved the biocompatibility of this artificial joint, while mechanics and the similar people's bone of biological property, well satisfied its mechanical property, greatly improved the service life of this artificial joint and implanted comfort level.
Description of drawings
Fig. 1 is the structural representation of the medical science bone replacement hip joints handle of the low elastic modulus among this utility model embodiment 1.
Fig. 2 is the structural representation of hollow structure of the medical science bone replacement hip joints handle of low elastic modulus among this utility model embodiment 1.
The specific embodiment
Be this utility model preferred embodiment below, and be not be used to limiting protection domain of the present utility model.
Embodiment 1
Shown in Fig. 1～2: a kind of medical science bone replacement hip joints handle of low elastic modulus, it comprises head 1, cervical region 2 and handle body 3; Handle body 3 is hollow structure, and handle body 3 surfaces are provided with a plurality of through-hole structures 4, keeps being communicated with by this through-hole structure 4 with handle body 3 outsides to guarantee handle body 3 inner hollow part; Handle body 3 is set to the porous tantalum product, and its porosity is 60～70%; Head 1 and cervical region 2 are that titanium alloy is one-body molded, and realize and being fixedly connected with of handle body 3 by laser weld; Be filled with the broken osseous granules from body or allosome in the hollow structure of handle body 3, the broken osseous granules fusion growth of filling in outside osseous tissue and the handle body 3 is integral, its overall elastic modelling quantity can be very approaching with people's bone, and then more effectively delay or avoid sclerotin to degenerate to prevent between artificial hip joint stem and sclerotin to occur loosening; The surfaces externally and internally of handle body 3 has hydroxyapatite coating layer, so that it has the function of inducing bone cell growth.
Claims (5)
1. the medical science bone replacement hip joints handle of a low elastic modulus, it comprises head (1), cervical region (2) and handle body (3), it is characterized in that: described handle body (3) is hollow structure, handle body (3) surface is provided with a plurality of through-hole structures (4), and handle body (3) inner hollow part keeps being communicated with by this through-hole structure (4) with handle body (3) is outside; Described handle body (3) is set to the porous tantalum product.
2. the medical science bone replacement hip joints handle of low elastic modulus according to claim 1 is characterized in that: described head (1) and described cervical region (2) are one-body molded for titanium alloy, and being fixedly connected with by welding realization and described handle body (3).
3. the medical science bone replacement hip joints handle of low elastic modulus according to claim 1 and 2 is characterized in that: described handle body (3) adopts the porous tantalum product, and its porosity is 60～70%; Be filled with the broken osseous granules from body or allosome in the hollow structure of described handle body (3).
4. the medical science bone replacement hip joints handle of low elastic modulus according to claim 1 and 2, it is characterized in that: the surfaces externally and internally of described handle body (3) has hydroxyapatite coating layer.
5. the medical science bone replacement hip joints handle of low elastic modulus according to claim 3, it is characterized in that: the surfaces externally and internally of described handle body (3) has hydroxyapatite coating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320289903 CN203252770U (en) | 2013-05-24 | 2013-05-24 | Low-elasticity-modulus medical bone replacement hip joint grip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320289903 CN203252770U (en) | 2013-05-24 | 2013-05-24 | Low-elasticity-modulus medical bone replacement hip joint grip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203252770U true CN203252770U (en) | 2013-10-30 |
Family
ID=49465382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320289903 Expired - Fee Related CN203252770U (en) | 2013-05-24 | 2013-05-24 | Low-elasticity-modulus medical bone replacement hip joint grip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203252770U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107080606A (en) * | 2017-05-22 | 2017-08-22 | 北京爱康宜诚医疗器材有限公司 | Low elastic modulus femoral stem |
-
2013
- 2013-05-24 CN CN 201320289903 patent/CN203252770U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107080606A (en) * | 2017-05-22 | 2017-08-22 | 北京爱康宜诚医疗器材有限公司 | Low elastic modulus femoral stem |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131030 Termination date: 20190524 |