CN203244472U - Hip joint combination handle for medical bone replacement - Google Patents
Hip joint combination handle for medical bone replacement Download PDFInfo
- Publication number
- CN203244472U CN203244472U CN 201320264650 CN201320264650U CN203244472U CN 203244472 U CN203244472 U CN 203244472U CN 201320264650 CN201320264650 CN 201320264650 CN 201320264650 U CN201320264650 U CN 201320264650U CN 203244472 U CN203244472 U CN 203244472U
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- China
- Prior art keywords
- femoral stem
- handle
- hip joint
- thighbone
- joint combination
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- Expired - Fee Related
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Abstract
The utility model relates to a hip joint combination handle for medical bone replacement. The hip joint combination handle for the medical bone replacement comprises a thighbone handle upper end (3), a thighbone handle middle end (2) and a thighbone handle lower end (1). The hip joint combination handle for the medical bone replacement is characterized in that the thighbone handle lower end (1) is a long cylindrical body, the rear end is conical, a tuning-fork-shaped longitudinal decompression groove (13) is formed in the rear end, a plurality of longitudinal grooves (11) are evenly distributed in the circumference of the tuning-fork-shaped longitudinal decompression groove (13), a positioning boss (12) is arranged at one end, connected with the thighbone handle middle end (2), of the thighbone handle lower end (1), the upper end and the lower end of the thighbone handle middle end (2) are respectively provided with a recessed platform (21), the thighbone handle middle end (2) is a multi-hole tantalum workpiece, and a positioning boss (31) is arranged at one end, connected with the thighbone handle middle end (2), of the thighbone handle upper end (3). The hip joint combination handle is stable in structure, similar to human bones in mechanical property and strong in matching with the human bones, and has good biocompatibility at the same time.
Description
Technical field
This utility model relates to medical domain bone displacement transplanting and uses artificial bone, relates in particular to a kind of hip joint combined handle for the displacement of medical science bone.
Background technology
Medical science orthopaedic trauma and surgical clinical are treated various hip joint disease late periods such as femur head necrosis, osteoarthritis, and during a variety of causes hip joint destruction of causing etc., generally adopt the method for hip replacement surgery, body is implanted into made hip joint, 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.Traditional artificial metal hip joint stalk generally adopts the material manufacture such as titanium alloy, vitallium, and these alloys have become one of material that artificial joint the most generally adopts with its good wearability, corrosion resistance and good mechanical characteristic.
Owing to the metal hip joint handle, can not meet the structure of femoral bone cavitas medullaris fully at present, how its matching directly has influence on the surgical effect of hip replacement.Because the increase of the anatomical difference of human femur under loading pulp cavity and various deformity of hip joint and even the operation of more and more hip revision, the demand degree that prosthetic designs is adapted to various deformities is more and more higher.And selecting with structure of hip joint combined handle arrange the certain defective of upper existence, causes it can occur repelling with tissue after long-time the use, and biocompatibility is relatively poor and affect its service life.In addition, traditional metal hip joint handle is after operation, and its metal surface treatment technology is relevant with the degree that bone is grown into, and directly has influence on the fixed effect of hip joint.
The utility model content
The purpose of this utility model is to provide a kind of hip joint combined handle for the displacement of medical science bone, and this hip joint combined handle Stability Analysis of Structures, strong with the skeleton matching has good biocompatibility concurrently.
The purpose of this utility model is achieved in that
A kind of hip joint combined handle for the displacement of medical science bone, it comprises femoral stem upper end, femoral stem middle-end and femoral stem lower end, it is characterized in that: described femoral stem lower end is oval column, far-end is taper and offers the vertical relief groove of tuning fork-like, a plurality of longitudinal grooves evenly distribute on its circumference, strengthening its antitorque and anti-rotational stability, and be provided with positioning boss on described femoral stem lower end and the end that described femoral stem middle-end is connected; Described femoral stem middle-end is provided with recessed platform in two ends up and down, and described femoral stem middle-end is the porous tantalum product; Be provided with positioning boss on described femoral stem upper end and the end that described femoral stem middle-end is connected.
Above-mentioned femoral stem middle-end adopts the porous tantalum product, and its porosity is 60～70%.Above-mentioned femoral stem middle-end after realizing locating with the positioning boss of femoral stem upper end, femoral stem lower end respectively, makes integrated connection together by welding by the recessed platform on it again, and more solid and reliable.Find that through studying for a long period of time the porous tantalum product in the biocompatibility that has greatly improved hip joint combined handle, has also well satisfied its mechanical property, greatly improved its service life and implanted comfort level.Above-mentioned porous tantalum product can adopt the preparations such as foam dipping method, die pressing.
The utlity model has following beneficial effect:
Its femoral stem middle-end of this utility model is to have the porous product structure that bone is grown into, hole on the rough external surface is inwardly grown, the structure of growing in the formation, organically combine as a whole with body bone tissue, not only greatly improved the biocompatibility of this artificial joint, mechanics and the similar people's bone of biological property have well satisfied its mechanical property simultaneously, have greatly improved the service life of this artificial joint and have implanted comfort level.And the vertical relief groove of the tuning fork-like that the femoral stem lower end is offered has reduced the Rigidity and strength of handle body far-end, has alleviated the postoperative thigh pain that causes owing to femoral stem handle body far-end rigidity.Be applicable to the hip replacement that deformity is serious and overhaul, trouble limb length and motor function have been recovered to greatest extent, effectively solve growing in conjunction with unsettled problem with bad the reaching with human bone of human femur under loading matching that the traditional metal hip joint stalk exists, and can reduce the incidence rate of thigh pain.
Description of drawings
Fig. 1 is the structural representation after the hip joint combined handle that is used for the displacement of medical science bone among this utility model embodiment 1 makes up.
Fig. 2 is the structural representation after each structure of hip joint combined handle that is used for the displacement of medical science bone among this utility model embodiment 1 splits.
The specific embodiment
Be this utility model preferred embodiment below, and be not be used to limiting protection domain of the present utility model.
Shown in Fig. 1～2: a kind of hip joint combined handle for the displacement of medical science bone, it comprises femoral stem upper end 3, femoral stem middle-end 2 and femoral stem lower end 1; Femoral stem lower end 1 is oval column, far-end is taper and offers the vertical relief groove 13 of tuning fork-like, a plurality of longitudinal grooves 11 that evenly distribute on its circumference strengthening its antitorque and anti-rotational stability, and are provided with positioning boss 12 on femoral stem lower end 1 and the end that femoral stem middle-end 2 is connected; The femoral stem middle-end is provided with recessed platform 21 in two ends about in the of 2, and femoral stem middle-end 2 is the porous tantalum product, and its porosity is 60～70%; Be provided with positioning boss 31 on femoral stem upper end 3 and the end that femoral stem middle-end 2 is connected; Femoral stem middle-end 2 is by the recessed platform 21 on it, respectively with femoral stem upper end 3, femoral stem lower end 1 on after the corresponding positioning boss 31 that arranges, 12 realizes the location, make integrated connection together by laser weld again, and more solid and reliable.
Claims (2)
1. one kind is used for the hip joint combined handle that the medical science bone is replaced, it comprises femoral stem upper end (3), femoral stem middle-end (2) and femoral stem lower end (1), it is characterized in that: described femoral stem lower end (1) is oval column, far-end is taper and offers the vertical relief groove of tuning fork-like (13), the a plurality of longitudinal grooves (11) that evenly distribute on its circumference, and be provided with positioning boss (12) on described femoral stem lower end (1) and the end that described femoral stem middle-end (2) is connected; Described femoral stem middle-end (2) up and down two ends is provided with recessed platform (21), and described femoral stem middle-end (2) is the porous tantalum product; Be provided with positioning boss (31) on described femoral stem upper end (3) and the end that described femoral stem middle-end (2) is connected.
2. the hip joint combined handle for medical science bone displacement according to claim 1 is characterized in that: described femoral stem middle-end (2), adopt the porous tantalum product, and its porosity is 60～70%; Described femoral stem middle-end (2) after realizing locating with the positioning boss (31,12) of femoral stem upper end (3), femoral stem lower end (1) respectively, makes integrated connection together by welding by the recessed platform (21) on it again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320264650 CN203244472U (en) | 2013-05-16 | 2013-05-16 | Hip joint combination handle for medical bone replacement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320264650 CN203244472U (en) | 2013-05-16 | 2013-05-16 | Hip joint combination handle for medical bone replacement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203244472U true CN203244472U (en) | 2013-10-23 |
Family
ID=49370943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320264650 Expired - Fee Related CN203244472U (en) | 2013-05-16 | 2013-05-16 | Hip joint combination handle for medical bone replacement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203244472U (en) |
-
2013
- 2013-05-16 CN CN 201320264650 patent/CN203244472U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20131023 Termination date: 20190516 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |