CN203291077U - Medical hip joint prosthesis - Google Patents
Medical hip joint prosthesis Download PDFInfo
- Publication number
- CN203291077U CN203291077U CN2013203373851U CN201320337385U CN203291077U CN 203291077 U CN203291077 U CN 203291077U CN 2013203373851 U CN2013203373851 U CN 2013203373851U CN 201320337385 U CN201320337385 U CN 201320337385U CN 203291077 U CN203291077 U CN 203291077U
- Authority
- CN
- China
- Prior art keywords
- joint
- medical
- mortar
- hip
- boss
- 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
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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
-
- 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)
Abstract
The utility model relates to a medical hip joint prosthesis which comprises a hip joint handle (1) and a bionic joint capsule (2). The medical hip joint prosthesis is characterized in that the lower end of the hip joint handle (1) is connected with a ball head (4), the ball head (4) is matched with a joint (3) to form a joint friction pair, the bionic joint capsule (2) is a bowl-shaped capsule, a center hole is formed in the top of the bionic joint capsule (2) to enable the bionic joint capsule (2) to be fixedly connected with the hip joint handle (1) in a sleeved mode, the periphery of the bowl opening is attached to and fixedly connected with the top face of the joint (3), and therefore joint cavities (6) are formed between the bionic joint capsule (2) and the hip joint handle (1), and between the ball head (4) and the joint (3), a metal joint (5) is arranged on the outer layer of the joint (3) in a matched mode, an annular boss (7) is attached to the surface of the metal joint (5), and the boss (7) is arranged to be a multi-hole tantalum part. The medical hip joint prosthesis is reasonable in structure, capable of effectively retaining synovial fluid and good in biocompatibility.
Description
Technical field
This utility model relates to the bone displacement of medical domain to be transplanted, and relates in particular to a kind of medical hip prosthesis.
Background technology
The various hip joint terminal illness of clinical medicine treatment, during as femur head necrosis etc., generally adopt the method for hip replacement surgery, body is implanted into made hip prosthesis, to play fixing and supporting role, and the anatomical structure of rebuilding human hip, and make it obtain normal mechanical property to complete certain physiological function, reach thus alleviating pain, improve the purpose of function.
Known artificial joint is the friction pair that has replaced ossa articularia (comprising articular surface and cartilage) to form with the friction pair that metal, macromolecular material or ceramic material form, and artificial joint also lacks the secretion that has in human synovial and the joint capsule of storing synovial fluid.For this reason, in existing design, done large quantity research, pair is joined in expectation by changing joint design, material improve the artificial joint lubrication state, but all significantly improve, and relevant issues still exist in a large number.
The utility model content
The purpose of this utility model is to provide a kind of medical hip prosthesis, and this hip prosthesis is rational in infrastructure, can effectively possess synovial fluid, and has good biocompatibility concurrently.
The purpose of this utility model is achieved in that
A kind of medical hip prosthesis, it includes hip joint stalk and bionic joint capsule, it is characterized in that: the lower end of described hip joint stalk connects a bulb, and this bulb and the mortar formation joint-friction that is complementary is joined pair; Described bionic joint capsule is bowl shaped bag, its top has centre bore to be set with and to be fixedly connected with described hip joint stalk, and the rim of a bowl periphery posts and fixes and is connected with the end face of described mortar, thereby forms articular cavity between described bionic joint capsule and described hip joint stalk, described bulb and described mortar; Described mortar skin also mates a metal acetabular, and the surface attachment of this metal acetabular has circular boss, and this boss is set to the porous tantalum product.
Above-mentioned boss is set to 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.Through the discovery that studies for a long period of time: the boss that adopts this porous tantalum product, the structure of growing in bone being grown into form, in the biocompatibility that has greatly improved this artificial joint, also well met its mechanical property, greatly improved its service life and implanted comfort level, having increased stability and anti-verticity after prosthese is implanted.
Above-mentioned bulb is metal ball-head or ceramic bulb, and this bulb is that the Wedge insertion formula is connected with hip joint stalk.
Above-mentioned mortar is set to polyethylene mortar or ceramic mortar.
Above-mentioned bionic joint capsule is viscoelasticity medical macromolecular materials products, can be specifically silica gel, polyvinyl alcohol, medical nylon, chitosan or other biological material, or by wherein two kinds and two or more composites.
In above-mentioned articular cavity, store synovial fluid.
Above-mentioned boss exceeds 5～10 millimeters, above-mentioned metal acetabular surface, to increase its contact area, and then stable connection.
The utlity model has following beneficial effect:
This utility model is provided with the boss of porous tantalum product on the surface of metal acetabular, the structure of growing in bone being grown into formed, in the biocompatibility that has greatly improved this artificial joint, also well met its mechanical property, greatly improved its service life and implanted comfort level, having increased stability and anti-verticity after prosthese is implanted.In addition, the setting of its bowl type bionic joint capsule, avoided when reality is on active service and between mortar having the possible of contact friction, wearing and tearing, effectively possessed synovial fluid, has good biocompatibility concurrently.
The accompanying drawing explanation
Fig. 1 is the structural representation of the medical hip prosthesis in this utility model embodiment 1.
Fig. 2 is the upward view of 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 bionic hip-joint, it includes hip joint stalk 1 and bionic joint capsule 2; The lower end of its hip joint stalk 1 is connected with a titanium alloy bulb 4 by the Wedge insertion formula, and this titanium alloy bulb 4 and polyethylene mortar 3 are complementary and form joint-friction and join pair; Bionic joint capsule 2 is bowl shaped bag, adopt the silica gel product, its top has centre bore and hip joint stalk 1 to be set with and bonds fixing, and the rim of a bowl periphery is fitted and bonds fixing with the end face of polyethylene mortar 3, thereby between bionic joint capsule 2 and hip joint stalk 1, titanium alloy bulb 4 and polyethylene mortar 3, form articular cavity 6, in this articular cavity 6, store synovial fluid; Polyethylene mortar 3 skins also mate and are provided with a titanium alloy mortar 5, and the surface attachment of this titanium alloy mortar 5 has 3 circular boss 7, and this boss 7 is set to the porous tantalum product, and its porosity is 60～70%, and this boss 7 exceeds 6 millimeters, titanium alloy mortar 5 surface.
In this example, bionic joint capsule 2 is connected at end face with polyethylene mortar 3, and then make the size of bionic joint capsule 2 less, and bionic joint capsule 2 does not structurally have the tendency of contact friction, wearing and tearing, and has overcome the problem of the assembling difficulty that exists because of the little imitative capitate bionic joint capsule in two broad in the middle.In addition, the boss of the porous tantalum product that arranges on the surface of metal acetabular, the structure of growing in bone being grown into formed, in the biocompatibility that has greatly improved this artificial joint, also well met its mechanical property, greatly improved its service life and implanted comfort level, having increased stability and anti-verticity after prosthese is implanted.
Claims (9)
1. medical hip prosthesis, it includes hip joint stalk (1) and bionic joint capsule (2), it is characterized in that: the lower end of described hip joint stalk (1) connects a bulb (4), and this bulb (4) and a mortar (3) are complementary and form joint-friction and join pair; Described bionic joint capsule (2) is bowl shaped bag, its top has centre bore to be set with and to be fixedly connected with described hip joint stalk (1), and the rim of a bowl periphery posts and fixes and is connected with the end face of described mortar (3), thereby forms articular cavity (6) between described bionic joint capsule (2) and described hip joint stalk (1), described bulb (4) and described mortar (3); Described mortar (3) skin also mates a metal acetabular (5), and the surface attachment of this metal acetabular (5) has circular boss (7), and this boss (7) is set to the porous tantalum product.
2. medical hip prosthesis according to claim 1, it is characterized in that: described boss (7) is set to the porous tantalum product, and its porosity is 60～70%.
3. medical hip prosthesis according to claim 1 and 2, it is characterized in that: described bulb (4) is metal ball-head or ceramic bulb, and this bulb (4) is connected for the Wedge insertion formula with described hip joint stalk (1).
4. medical hip prosthesis according to claim 1 and 2, it is characterized in that: described mortar (3) is set to polyethylene mortar or ceramic mortar; Described bionic joint capsule (2) is viscoelasticity medical macromolecular materials products; Described articular cavity stores synovial fluid in (6).
5. medical hip prosthesis according to claim 3, it is characterized in that: described mortar (3) is set to polyethylene mortar or ceramic mortar; Described bionic joint capsule (2) is viscoelasticity medical macromolecular materials products; Described articular cavity stores synovial fluid in (6).
6. medical hip prosthesis according to claim 1 and 2 is characterized in that: described boss (7) exceeds 5～10 millimeters, described metal acetabular (5) surface.
7. medical hip prosthesis according to claim 3 is characterized in that: described boss (7) exceeds 5～10 millimeters, described metal acetabular (5) surface.
8. medical hip prosthesis according to claim 4 is characterized in that: described boss (7) exceeds 5～10 millimeters, described metal acetabular (5) surface.
9. medical hip prosthesis according to claim 5 is characterized in that: described boss (7) exceeds 5～10 millimeters, described metal acetabular (5) surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203373851U CN203291077U (en) | 2013-06-13 | 2013-06-13 | Medical hip joint prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203373851U CN203291077U (en) | 2013-06-13 | 2013-06-13 | Medical hip joint prosthesis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203291077U true CN203291077U (en) | 2013-11-20 |
Family
ID=49567126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203373851U Expired - Fee Related CN203291077U (en) | 2013-06-13 | 2013-06-13 | Medical hip joint prosthesis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203291077U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103655006A (en) * | 2013-12-08 | 2014-03-26 | 无锡蚂蚁微威科技有限公司 | Hip joint prosthesis |
| CN103720526A (en) * | 2013-12-08 | 2014-04-16 | 无锡伊诺永利文化创意有限公司 | Hip joint prosthesis |
-
2013
- 2013-06-13 CN CN2013203373851U patent/CN203291077U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103655006A (en) * | 2013-12-08 | 2014-03-26 | 无锡蚂蚁微威科技有限公司 | Hip joint prosthesis |
| CN103720526A (en) * | 2013-12-08 | 2014-04-16 | 无锡伊诺永利文化创意有限公司 | Hip joint prosthesis |
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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: 20131120 Termination date: 20190613 |