CN203388966U - Femoral component prosthesis for hip joint of human body - Google Patents

Femoral component prosthesis for hip joint of human body Download PDF

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Publication number
CN203388966U
CN203388966U CN201320337504.3U CN201320337504U CN203388966U CN 203388966 U CN203388966 U CN 203388966U CN 201320337504 U CN201320337504 U CN 201320337504U CN 203388966 U CN203388966 U CN 203388966U
Authority
CN
China
Prior art keywords
prosthesis
human
handle
cervical region
femoral
Prior art date
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
Application number
CN201320337504.3U
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Chinese (zh)
Inventor
叶雷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chongqing Runze Pharmaceutical Co Ltd
Original Assignee
Chongqing Runze Pharmaceutical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Chongqing Runze Pharmaceutical Co Ltd filed Critical Chongqing Runze Pharmaceutical Co Ltd
Priority to CN201320337504.3U priority Critical patent/CN203388966U/en
Application granted granted Critical
Publication of CN203388966U publication Critical patent/CN203388966U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/32Joints for the hip
    • A61F2/36Femoral heads ; Femoral endoprostheses
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof

Abstract

The utility model relates to a femoral component prosthesis for the hip joint of a human body. The femoral component prosthesis comprises a head (1), a neck (2), a component body (3) and a tail (4) and is characterized in that the head (1) and the neck (2) are arranged into porous tantalum parts and integrally formed; a screw locking shaft (8) is additionally arranged at the tail end of the neck (2); transversely-penetrating through holes (5) are formed in the component body (3); meshes (7) are formed in the component body (3); a thread hole is formed in one end of the component body (3), which is connected with the neck (2) and is matched with the screw locking shaft (8) arranged on the neck (2), so that the component body (3) is connected with the neck (2); the tail (4) is also arranged into a porous tantalum part. The femoral component prosthesis for the hip joint is simple in structure and is good in biocompatibility and is stably and firmly connected with the human body.

Description

A kind of human hip type femoral bone end prosthesis
Technical field
This utility model relates to medical domain artificial joint, relates in particular to a kind of human hip type femoral bone end prosthesis.
Background technology
Artificial hip joint femoral shaft is a kind of need to carry out orthopaedics replacement operation for human hip pathological changes time, and the alternative of implant into body medullary cavity plays fixing and supporting role in vivo.It can make patient recover to a certain extent the physiological function of hip joint, and alleviating pain, improves motion and quality of life.It consists of the first-class parts of femoral stem, acetabular cup and femur, and its femoral stem is as the link that connects human femur under loading and human body far-end.
But the hip prosthesis overwhelming majority used in the prior art is external import prosthese.Through repeatedly clinical experiment checking, there is following weak point in the artificial marrow joint handle of this known structure: first biomechanics distributes uneven, and local area easily produces stress concentration, and femur bears gravity and is difficult to equilibrium, causes bone dissolving to produce loosening; It two is to be difficult to fix with femur in clinical practice, easily occurs looseningly between femoral stem and sclerotin, can not reach good coupling, causes postoperative easy generation handle to sink; It three is that artificial hip joint stem biocompatibility is poor, thereby there will be repulsion to affect its service life with tissue after long-time use, has increased the turnover rate of femoral stem.
Utility model content
The purpose of this utility model is to provide a kind of human hip type femoral bone end prosthesis, and this femoral hip stem is simple and reasonable, it is efficient and convenient to assemble, and is connected firmly stablely with human body, and has good biocompatibility concurrently.
The purpose of this utility model is achieved in that
A type femoral bone end prosthesis, it includes head, cervical region, handle body and afterbody, it is characterized in that: described head and described cervical region are set to porous tantalum product, adopts one-body moldedly, and described neck finish has additional screw lock axle; In described handle body, be provided with the through hole of lateral direction penetrating, on described handle body, be provided with mesh, and the one end being connected with described cervical region on described handle body is provided with screwed hole, the connection that realizes the two to coordinate the screw lock axle that cervical region is installed; Described afterbody is also set to porous tantalum product.
Above-mentioned head, above-mentioned cervical region and above-mentioned afterbody are all set to porous tantalum product, and its porosity is 60~70%.These porous tantalum products, can adopt the preparations such as foam dipping method, die pressing.Through the discovery that studies for a long period of time: adopt the femoral hip stem of this porous tantalum product when greatly having improved its biocompatibility, also well met its mechanical property, greatly improve service life and implanted comfort level, and the porous tantalum product structure that can make bone grow into, hole on rough external surface is inwardly grown, the structure of growing in formation, organically combine as a whole with body bone tissue, after can making femoral stem implant pulp cavity and between spongy bone, mutually embed, can increase on the one hand the stability after prosthese is implanted, can increase on the other hand the anti-verticity of prosthese, the final prosthese stability at a specified future date that increases.
In above-mentioned through hole, be provided with screw, this screw adopts conventional medical metal product ,Qie Qi two ends to stretch out the handle body of this femoral hip stem, to increase this femoral hip stem, is connected with the firm of human femur under loading.
The quantity of above-mentioned through hole and above-mentioned screw is set to two, further to guarantee firm connection.
The utlity model has following beneficial effect:
This femoral hip stem has the porous tantalum product structure that bone is grown into, hole on rough external surface is inwardly grown, the structure of growing in formation, organically combining with body bone tissue is a relative fixing integral body, make femur bear gravity balance, prevented from long-term effectively occurring to become flexible between artificial hip joint femoral shaft and sclerotin, extended the service life of femoral stem, reduce the turnover rate of femoral stem, made discarded femoral stem minimizing.In addition, it also has simple in structure, compact and rationally, assembles efficient and conveniently, connects the beneficial features such as reliable.
Accompanying drawing explanation
Fig. 1 is the structural representation of the human hip type femoral bone end prosthesis in this utility model embodiment 1.
Fig. 2 is the head of human hip type femoral bone end prosthesis and the structural representation of cervical region in Fig. 1.
The specific embodiment
Be below this utility model preferred embodiment, and be not intended to limit protection domain of the present utility model.
Embodiment 1
As shown in Fig. 1~2: a kind of human hip type femoral bone end prosthesis, it includes head 1, cervical region 2, handle body 3 and afterbody 4, and the size of its overall dimensions and existing artificial hip joint stem is basic identical; Its head 1 and cervical region 2 are set to porous tantalum product, adopt one-body moldedly, and its porosity is 60~70%, and cervical region 2 ends have additional screw lock axle 8; In handle body 3, be provided with the through hole 5 of two lateral direction penetratings, in this through hole 5, be provided with screw 6; This screw 6 adopts conventional medical titanium alloy product ,Qie Qi two ends to stretch out the handle body 3 of this femoral hip stem; On its handle body 3, be also provided with mesh 7, and the corresponding screwed hole that is provided with in one end connecting with cervical region 2 on handle body 3, the connection that realizes the two to coordinate the screw lock axle 8 that cervical region 2 is installed; Afterbody 4 is also set to porous tantalum product, and its porosity is 60~70%.
Femoral hip stem in this example has the porous tantalum product structure that bone is grown into, hole on rough external surface is inwardly grown, the structure of growing in formation, organically combining with body bone tissue is a relative fixing integral body, make femur bear gravity balance, prevented from long-term effectively occurring to become flexible between artificial hip joint femoral shaft and sclerotin, extended the service life of femoral stem, reduce the turnover rate of femoral stem, made discarded femoral stem minimizing.

Claims (4)

1. a human hip type femoral bone end prosthesis, it includes head (1), cervical region (2), handle body (3) and afterbody (4), it is characterized in that: described head (1) and described cervical region (2) are set to porous tantalum product, adopt one-body moldedly, and described cervical region (2) end has additional screw lock axle (8); In described handle body (3), be provided with the through hole (5) of lateral direction penetrating; On described handle body (3), be provided with mesh (7), and the upper one end being connected with described cervical region (2) of described handle body (3) is provided with screwed hole, the connection that realizes the two to coordinate the screw lock axle (8) that cervical region (2) is installed; Described afterbody (4) is also set to porous tantalum product.
2. human hip type femoral bone end prosthesis according to claim 1, is characterized in that: described head (1), described cervical region (2) and described afterbody (4) are all set to porous tantalum product, and its porosity is 60~70%.
3. human hip type femoral bone end prosthesis according to claim 1 and 2, is characterized in that: in described through hole (5), be provided with screw (6), this screw (6) adopts medical metal product ,Qie Qi two ends to stretch out the handle body (3) of this femoral hip stem.
4. human hip type femoral bone end prosthesis according to claim 3, is characterized in that: the quantity of described through hole (5) and described screw (6) is set to two.
CN201320337504.3U 2013-06-13 2013-06-13 Femoral component prosthesis for hip joint of human body Expired - Fee Related CN203388966U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320337504.3U CN203388966U (en) 2013-06-13 2013-06-13 Femoral component prosthesis for hip joint of human body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320337504.3U CN203388966U (en) 2013-06-13 2013-06-13 Femoral component prosthesis for hip joint of human body

Publications (1)

Publication Number Publication Date
CN203388966U true CN203388966U (en) 2014-01-15

Family

ID=49900530

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320337504.3U Expired - Fee Related CN203388966U (en) 2013-06-13 2013-06-13 Femoral component prosthesis for hip joint of human body

Country Status (1)

Country Link
CN (1) CN203388966U (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104970902A (en) * 2014-04-04 2015-10-14 宝楠生技股份有限公司 Feather quantized femoral stem
CN106880419A (en) * 2015-12-16 2017-06-23 重庆润泽医药有限公司 A kind of hip prosthesis
CN106880424A (en) * 2015-12-16 2017-06-23 重庆润泽医药有限公司 A kind of artificial shoulder joint prosthesis
CN106880421A (en) * 2015-12-16 2017-06-23 重庆润泽医药有限公司 A kind of artificial hip joint
CN106913397A (en) * 2015-12-25 2017-07-04 重庆润泽医药有限公司 A kind of Simple hip joint
TWI634881B (en) * 2015-04-21 2018-09-11 寶楠生技股份有限公司 Femoral stem with cushion

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104970902A (en) * 2014-04-04 2015-10-14 宝楠生技股份有限公司 Feather quantized femoral stem
TWI634881B (en) * 2015-04-21 2018-09-11 寶楠生技股份有限公司 Femoral stem with cushion
CN106880419A (en) * 2015-12-16 2017-06-23 重庆润泽医药有限公司 A kind of hip prosthesis
CN106880424A (en) * 2015-12-16 2017-06-23 重庆润泽医药有限公司 A kind of artificial shoulder joint prosthesis
CN106880421A (en) * 2015-12-16 2017-06-23 重庆润泽医药有限公司 A kind of artificial hip joint
CN106880421B (en) * 2015-12-16 2019-02-26 重庆润泽医药有限公司 A kind of artificial hip joint
CN106913397A (en) * 2015-12-25 2017-07-04 重庆润泽医药有限公司 A kind of Simple hip joint

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140115

Termination date: 20190613

CF01 Termination of patent right due to non-payment of annual fee