CN203303195U - Eccentric lining used for artificial hip joint repairing - Google Patents
Eccentric lining used for artificial hip joint repairing Download PDFInfo
- Publication number
- CN203303195U CN203303195U CN2013203045560U CN201320304556U CN203303195U CN 203303195 U CN203303195 U CN 203303195U CN 2013203045560 U CN2013203045560 U CN 2013203045560U CN 201320304556 U CN201320304556 U CN 201320304556U CN 203303195 U CN203303195 U CN 203303195U
- Authority
- CN
- China
- Prior art keywords
- liner
- heavy burden
- wall
- hip joint
- inner chamber
- 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
Links
Images
Classifications
-
- 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
- A61F2/34—Acetabular cups
-
- 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
Landscapes
- 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 discloses an eccentric lining used for artificial hip joint repairing. The eccentric lining used for the artificial hip joint repairing comprises a lining body. The lining body is provided with a semispherical outer surface; the lining body is provided with a semispherical inner cavity; the sphere center of the semispherical inner cavity and the sphere center of the semispherical outer surface are mutually staggered; the sphere center of the semispherical inner cavity is biased toward one side of a non-load bearing wall of the lining body, so that the thickness of a load bearing wall of the lining body is bigger than that of the non-load bearing wall. According to the eccentric lining used for the artificial hip joint repairing disclosed by the utility model, the wall thickness of the lining in a load bearing area can be increased, so that the lining can be matched with a large-diameter caput femoris, the joint movement degree is increased, and effective bone cement thickness can be obtained in a metal acetabular cup with a limited space.
Description
Technical field
This utility model relates to the artificial prosthesis of a kind of orthopaedics displacement use, particularly relates to a kind of artificial hip joint and overhauls and use eccentric liner, belongs to technical field of medical instruments.
Background technology
At present, Acetabular revision has two kinds of selections: 1, full acetabular revision: be suitable for metal acetabulum when loosening.2, liner is overhauled: be suitable for metal acetabulum stable, but liner wearing and tearing, loosening, the bone dissolving with the Periacetabular degree varies, account for hip revision case 1/3.Liner is overhauled advantage and is that operation wound is little, go out insufficiency of blood, operating time is short, cost economical, retain the acetabular bone amount, and wear debris and limitans tissue are removed in the debridement of can going simultaneously, can dissolve by acetabular bone screw hole bone grafting or the acetabular bone bone grafting treatment bone of windowing, acetabular bone defect, the pelvis of avoiding full acetabular revision to cause are discontinuous, and reducing performs the operation disables, fatality rate, thereby obtain many doctors' favor.
Liner has been overhauled two kinds of modes: 1, changeable liner more merely; 2, bone cement lining technique.More changeable liner is former thereby be difficult to realize because locking device damages, new liner does not mate, is difficult to find former model liner etc. merely.The bone cement lining technique is with bone cement, new liner to be fixed in former mortar cup, has not only solved the problems referred to above, can also adjust liner size and opening direction, selects different model and material liner, use and contain antibiotic-loaded bone cement minimizing overhaul technology postoperative infection.Yet the bone cement lining technique need adopt the bone cement sleeve that 2mm is thick, to obtain desirable constant intensity, need to be with the femoral head of 28mm and above diameter to reduce the postoperative dislocation risk, while in the primary acetabulum allowed band, selecting, the restriction to some extent due to the thickness requirement to liner (8mm at least), for internal diameter, be the metal acetabular cup of 40mm, 42mm, there is no suitable existing liner; Stable for the metal acetabular cup, but position is bad, the case of hyper-abduction, the existing liner bone cement changed course of application is fixing, and because metal acetabular cup and liner are staggered fixing, stationary plane reduces with angle of cut increase, and stability descends thereupon.
The utility model content
For the deficiencies in the prior art, the purpose of this utility model is to use eccentric liner in order to provide a kind of artificial hip joint to overhaul, this liner can increase heavy burden district inner liner wall thickness, make it can mate the major diameter femoral head, increase range of motion, and can in the metal acetabular cup of limited space, obtain effective bone cement thickness.
For achieving the above object, this utility model adopts following technical scheme:
A kind of artificial hip joint is overhauled and is used eccentric liner, comprise the liner body, it is characterized in that: described liner body has exterior semi-spherical surface, described liner main body has the hemispherical inner chamber, the centre of sphere of described hemispherical inner chamber and the centre of sphere of exterior semi-spherical surface stagger mutually, non-heavy burden wall one side of the centre of sphere of described hemispherical inner chamber deflection liner main body, make the thickness of the heavy burden wall of liner main body be greater than the thickness of non-heavy burden wall.
Realize that the purpose of this utility model can also reach by taking following technical scheme:
Realize that a kind of embodiment of the present utility model is: the centre of sphere of described hemispherical inner chamber is to non-heavy burden lateral deviation 2mm, makes the large 4mm of thickness of the non-heavy burden wall of Thickness Ratio of the heavy burden wall of liner main body.
Realize that a kind of embodiment of the present utility model is: described heavy burden wall is concordant with the end face of non-heavy burden wall; The open end of the end face of described heavy burden wall and hemispherical inner chamber is positioned at same plane; The open end of described hemispherical inner chamber is concordant with the end face of non-heavy burden wall, and namely angle is 0 degree.
Realize that a kind of embodiment of the present utility model is: described heavy burden wall has outward extending extension with inclined top surfaces, and the open end of this inclined top surfaces and hemispherical inner chamber is positioned at same plane; Angle between the end face of the open end of described hemispherical inner chamber and non-heavy burden wall is the 1-40 degree.
Realize that a kind of embodiment of the present utility model is: the angle between the end face of the open end of described hemispherical inner chamber and non-heavy burden wall is 10 degree, 20 degree or 30 degree.
Realize that a kind of embodiment of the present utility model is: on the medial wall of non-heavy burden wall, also be provided with arcuate groove, this arcuate groove is communicated with the hemispherical inner chamber.Be conducive to increase the opening amplitude of hemispherical inner chamber.
Realize that a kind of embodiment of the present utility model is: the open end of described liner main body is provided with the frame of gear-like, is attached to the hemisphere on liner main body outer wall below frame, being provided with several.
Realize that a kind of embodiment of the present utility model is: the quantity of described hemisphere is 3, and its radius is 2mm.
Realize that a kind of embodiment of the present utility model is: the external diameter of described liner body is 40mm, 42mm, 44 mm, 46 mm, 48 mm, 50 mm or 52 mm; The internal diameter of described inner chamber is 28mm.
Realize that a kind of embodiment of the present utility model is: described liner body be a kind of by have super wear-resisting, highly crosslinkable can the liner body made of superhigh molecular weight polyethylene material.
The beneficial effects of the utility model are:
1, lining-design advantages of simple described in the utility model, by bias, design, make the thickness of heavy burden district inner liner wall increase, can mate the major diameter femoral head, increase range of motion, and can in the metal acetabular cup of limited space, obtain effective bone cement thickness.
2, this utility model designs by changed course, making the angle between the end face of the open end of described hemispherical inner chamber and non-heavy burden wall is the 10-30 degree, both changed the liner opening direction, increase femoral head at weight loading direction degree of containing, reduce the dislocation risk, eliminate again metal acetabular cup and liner staggered fixing, obtained maximum fixed area, increased interface stability.
3, this utility model, by mid-design, namely is provided with the frame of gear-like by the open end in the liner main body, is attached to the hemisphere on liner main body outer wall below frame, being provided with several; Can guarantee that liner is mid-, obtain the thick even bone cement sleeve of 2mm.Be applicable to that liner wearing and tearing are loosening but the metal acetabular cup is stable, position is bad, hyper-abduction overhaul case, to increase constant intensity, improve mobility, to reduce the dislocation risk.
The accompanying drawing explanation
Fig. 1 is the cut-away view of specific embodiment of the utility model 1 described liner.
Fig. 2 is the top view of specific embodiment of the utility model 1 described liner.
Fig. 3 is the axonometric chart of specific embodiment of the utility model 1 described liner.
Fig. 4 is the upward view of specific embodiment of the utility model 1 described liner.
Fig. 5 is the scheme of installation of the described liner of specific embodiment of the utility model 1 and metal acetabular cup.
Fig. 6 is the cut-away view of specific embodiment of the utility model 4 described liners.
Wherein, 1, the liner body, 2, metal acetabular cup, 11, exterior semi-spherical surface, 12, the hemispherical inner chamber, 13, the heavy burden wall, 14, non-heavy burden wall, 15, frame, 16, hemisphere, the open end of 12-1, hemispherical inner chamber, the end face of 13-1, heavy burden wall, the extension of 13-2, heavy burden wall, the inclined top surfaces of 13-3, heavy burden wall, the end face of 14-1, non-heavy burden wall, 14-2, arcuate groove.
The specific embodiment
Below, by reference to the accompanying drawings and the specific embodiment, this utility model is described further:
Specific embodiment 1:
With reference to Fig. 1-Fig. 4, the described artificial hip joint of the present embodiment is overhauled and is used eccentric liner, comprise liner body 1, described liner body 1 has exterior semi-spherical surface 11, described liner main body 1 has hemispherical inner chamber 12, the centre of sphere of the centre of sphere of described hemispherical inner chamber 12 and exterior semi-spherical surface 11 staggers mutually, and the centre of sphere of described hemispherical inner chamber 12 is to non-heavy burden lateral deviation 2mm, makes the large 4mm of thickness of the non-heavy burden wall 14 of Thickness Ratio of the heavy burden wall 13 of liner main body 1.
Described heavy burden wall 13 has outward extending extension 13-2 with inclined top surfaces 13-3, and the open end 12-1 of this inclined top surfaces 13-3 and hemispherical inner chamber 12 is positioned at same plane; Angle R between the open end 12-1 of described hemispherical inner chamber 12 and the end face 14-1 of non-heavy burden wall 14 is 20 degree.On the medial wall of non-heavy burden wall 14, also be provided with arcuate groove 14-2, this arcuate groove 14-1 is communicated with hemispherical inner chamber 12.Be conducive to increase the opening amplitude of hemispherical inner chamber 12.
With reference to Fig. 1-5, the open end of described liner main body 1 is provided with the frame 15 of gear-like, is attached to the hemisphere 16 on liner main body outer wall below frame 15, being provided with several, can guarantee in liner to be placed in metal acetabular cup 2.The quantity of described hemisphere 16 is 3, and its radius is 2mm.The external diameter of described liner body 1 is 42mm; The internal diameter of described inner chamber 12 is 28mm.Described liner body 1 for a kind of by have super wear-resisting, highly crosslinkable can the liner body made of superhigh molecular weight polyethylene material.
Specific embodiment 2:
The characteristics of the present embodiment are: the angle R between the open end 12-1 of described hemispherical inner chamber 12 and the end face of non-heavy burden wall is 10 degree.Other are identical with specific embodiment 1.
Specific embodiment 3:
The characteristics of the present embodiment are: the angle R between the open end 12-1 of described hemispherical inner chamber 12 and the end face of non-heavy burden wall is 30 degree.Other are identical with specific embodiment 1.
Specific embodiment 4:
With reference to Fig. 6, the characteristics of the present embodiment are: the end face 13-1 of described heavy burden wall 13 is concordant with the end face 14-1 of non-heavy burden wall 14; The end face 13-1 of described heavy burden wall 13 and the open end 12-1 of hemispherical inner chamber 12 are positioned at same plane; The open end 12-1 of described hemispherical inner chamber 12 is concordant with the end face of non-heavy burden wall, and namely angle is 0 degree.The present embodiment need to not established arcuate groove on the medial wall of non-heavy burden wall, other are identical with specific embodiment 1.
Other embodiment:
The external diameter of described liner body 1 is 40mm, 44 mm, 46 mm, 48 mm, 50 mm or 52 mm.Other are identical with specific embodiment 1,2,3 or 4.
For a person skilled in the art, can make other various corresponding changes and distortion according to technical scheme described above and design, and these all changes and the distortion all should belong to the protection domain of this utility model claim within.
Claims (10)
1. an artificial hip joint is overhauled and is used eccentric liner, comprise the liner body, it is characterized in that: described liner body has exterior semi-spherical surface, described liner main body has the hemispherical inner chamber, the centre of sphere of described hemispherical inner chamber and the centre of sphere of exterior semi-spherical surface stagger mutually, non-heavy burden wall one side of the centre of sphere of described hemispherical inner chamber deflection liner main body, make the thickness of the heavy burden wall of liner main body be greater than the thickness of non-heavy burden wall.
2. artificial hip joint according to claim 1 is overhauled and used eccentric liner, it is characterized in that: the centre of sphere of described hemispherical inner chamber is to non-heavy burden lateral deviation 2mm, makes the large 4mm of thickness of the non-heavy burden wall of Thickness Ratio of the heavy burden wall of liner main body.
3. artificial hip joint according to claim 1 is overhauled and used eccentric liner, it is characterized in that: described heavy burden wall is concordant with the end face of non-heavy burden wall; The open end of the end face of described heavy burden wall and hemispherical inner chamber is positioned at same plane; The open end of described hemispherical inner chamber is concordant with the end face of non-heavy burden wall, and namely angle is 0 degree.
4. artificial hip joint according to claim 3 is overhauled and used eccentric liner, it is characterized in that: described heavy burden wall has outward extending extension with inclined top surfaces, and the open end of this inclined top surfaces and hemispherical inner chamber is positioned at same plane; Angle between the end face of the open end of described hemispherical inner chamber and non-heavy burden wall is the 1-40 degree.
5. artificial hip joint according to claim 4 is overhauled and used eccentric liner, it is characterized in that: the angle between the end face of the open end of described hemispherical inner chamber and non-heavy burden wall is 10 degree, 20 degree or 30 degree.
6. artificial hip joint according to claim 4 is overhauled and is used eccentric liner, it is characterized in that: on the medial wall of non-heavy burden wall, also be provided with arcuate groove.
7. artificial hip joint according to claim 1 is overhauled and used eccentric liner, it is characterized in that: the open end of described liner main body is provided with the frame of gear-like, is attached to the hemisphere on liner main body outer wall below frame, being provided with several.
8. artificial hip joint according to claim 7 is overhauled and used eccentric liner, it is characterized in that: the quantity of described hemisphere is 3, and its radius is 2mm.
9. artificial hip joint according to claim 1 is overhauled and used eccentric liner, it is characterized in that: the external diameter of described liner body is 40mm, 42mm, 44 mm, 46 mm, 48 mm, 50 mm or 52 mm; The internal diameter of described inner chamber is 28mm.
10. artificial hip joint according to claim 1 is overhauled and used eccentric liner, it is characterized in that: described liner body is a kind of liner body of being made by superhigh molecular weight polyethylene material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203045560U CN203303195U (en) | 2013-05-29 | 2013-05-29 | Eccentric lining used for artificial hip joint repairing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203045560U CN203303195U (en) | 2013-05-29 | 2013-05-29 | Eccentric lining used for artificial hip joint repairing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203303195U true CN203303195U (en) | 2013-11-27 |
Family
ID=49609437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203045560U Expired - Fee Related CN203303195U (en) | 2013-05-29 | 2013-05-29 | Eccentric lining used for artificial hip joint repairing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203303195U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112998912A (en) * | 2021-03-12 | 2021-06-22 | 浙江大学医学院附属第一医院 | 3D printing acetabular cup prosthesis for artificial hip joint replacement surgery |
| WO2021147789A1 (en) * | 2020-01-21 | 2021-07-29 | 北京纳通医疗科技控股有限公司 | Acetabular cup prosthesis and locking structure therefor |
-
2013
- 2013-05-29 CN CN2013203045560U patent/CN203303195U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021147789A1 (en) * | 2020-01-21 | 2021-07-29 | 北京纳通医疗科技控股有限公司 | Acetabular cup prosthesis and locking structure therefor |
| CN112998912A (en) * | 2021-03-12 | 2021-06-22 | 浙江大学医学院附属第一医院 | 3D printing acetabular cup prosthesis for artificial hip joint replacement surgery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202821719U (en) | Anatomy type double acting whole hip artificial joint | |
| CN201668540U (en) | Biological fixed double-equator anti-dislocation acetabulum prosthesis | |
| CN104546227A (en) | Assembled double-acting acetabulum implant | |
| CN201182659Y (en) | Structure for locking acetabular cup and inner lining in artificial hip joint system | |
| CN203303195U (en) | Eccentric lining used for artificial hip joint repairing | |
| CN105748174A (en) | Non-metal ball hip joint prosthesis | |
| CN101653387B (en) | Force-closed knee replacement prosthesis | |
| CN201668539U (en) | Bone cement fixing type double-equator dislocation prevention acetabular prosthesis | |
| CN106388979A (en) | Novel double-action hip joint prosthesis | |
| CN203790083U (en) | Assembly type acetabulum prosthesis | |
| CN201154007Y (en) | Hip-joint prosthesis with hydroxylapatite coating | |
| CN104434343A (en) | Femoral stem prosthesis | |
| CN206934218U (en) | A kind of metal outer cup and acetabular bone system | |
| CN203861388U (en) | Acetabular prosthesis and hip joint prosthesis | |
| JP2012532659A5 (en) | ||
| CN204521058U (en) | Type femoral bone end prosthesis | |
| KR20180084117A (en) | Annular ceramic inserts for in-tube prosthesis | |
| CN104665959A (en) | Dislocation-free acetabulum lining prosthesis | |
| US20190358043A1 (en) | Artificial hip joint comprising composite ball | |
| CN209253070U (en) | A kind of femur sighting device convenient for adjusting direction | |
| CN211156482U (en) | Acetabular prosthesis | |
| CN203354701U (en) | Axis joint acetabular cup | |
| CN207898564U (en) | A kind of artificial hip joint mortar cup | |
| CN207689118U (en) | Femoral hip stem fatigue test loading device | |
| CN201244102Y (en) | Self-locking type hip-joint acetabulum |
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: 20131127 Termination date: 20150529 |
|
| EXPY | Termination of patent right or utility model |