CN2217965Y - Artificial cement hip joint - Google Patents
Artificial cement hip joint Download PDFInfo
- Publication number
- CN2217965Y CN2217965Y CN 94247257 CN94247257U CN2217965Y CN 2217965 Y CN2217965 Y CN 2217965Y CN 94247257 CN94247257 CN 94247257 CN 94247257 U CN94247257 U CN 94247257U CN 2217965 Y CN2217965 Y CN 2217965Y
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- CN
- China
- Prior art keywords
- hip joint
- artificial hip
- handle
- artificial
- none
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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 - Lifetime
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Abstract
The utility model relates to an artificial cement hip joint, characterized in that a handle of the artificial cement hip joint presents a cone shape from upside to downside; a spline shape is arranged on the tail section of the handle; a plurality of zigzag strap slots are arranged on the top of the handle; a plurality of dovetail-shaped strap slots are arranged on the outer surface of a metal acetabulum; hydroxyapatite (the thickness is 50-100 microns) is sintered or sprayed in the zigzag area of the handle and the dovetail-shaped area of the acetabulum. The utility model makes the bone tissue around an artificial joint ossify under the guide of the artificial joint and grow into the slots on the surface of the artificial joint; the shape structure of the neonatal bone is same with the artificial joint so as to form that the neonatal bone enchases and packs the artificial joint and reach the motive of biology fastness, which can avoid the disadvantage that the hydroxyapatite chips and is absorbed.
Description
This utility model relates to a kind of prosthese of medical applications, and feature relates to the artificial hip joint and the semi-artificial hip joint of seriation, belongs to medical apparatus and instruments (1PCA61F2/32).
The artificial joint of clinical practice now divides two big classes, and a class is bone cement workman joint, and another pass is the none-cement artificial joint.For the latter, existing two kinds at present, a kind of is the pore type artificial joint, and another kind is the hydroxyapatite type artificial joint.The latter is common artificial articular surface sintering or spraying last layer hydroxyapatite.It has the guiding bone formation performance hydroxyapatite, promotes surrounding bone to the artificial joint superficial growth, and is fixed, and final bone and artificial joint are linked to be an integral body.This biological fixed form makes artificial joint be hopeful to provide life-time service even uses throughout one's life.
But the hydroxyapatite artificial hip joint relies on osteogenesis and fixes, and its bed knife can change after surgery, so the still generation that has is loosening.A large amount of basic research show that the lip-deep hydroxyapatite thickness of artificial joint is too thick cracked easily, if slowly absorbed easily after the too thin then several years, these two kinds of reasons all can finally be directed at the loosening of artificial hip joint.
The purpose of this utility model is to overcome aforesaid two kinds can cause the loosening reason of hydroxyapatite artificial joint, designs and manufactures the better artificial hip joint of a kind of performance.This novel artificial joint hydroxyapatite thickness on the one hand is moderate, and both non-friable splitting also is difficult for being absorbed.Make great change on the other hand in shape, the artificial joint that changes shape is structurally interlaced with each other with the osseous tissue of new formation on every side, combination closely, even hydroxyapatite is absorbed, artificial joint is by firm fixing can not becoming flexible.This is the maximum characteristics of this novel artificial hip joint, also is the maximum difference with other hydroxyapatite artificial jointes.Can expect that so this novel artificial hip joint can reduce the loosening rate of such artificial hip joint to greatest extent, improve curative effect, to replace existing artificial hip joint.
According to this utility model:
For the artificial hip joint handle, be certain taper from the top down---narrow down by wide, by thick attenuation;
Handle tail has individual spline, and some saw tooth belt ditches are arranged at handle top, and sintering or spray the hydroxyapatite of 50-100 micron thickness.
For the metal acetabular bone, its outer surface has some dovetail band ditches, and sintering or spray the hydroxyapatite of 50-100 micron thickness.In several screw holes of its inner face also sintering or the spraying same thickness hydroxyapatite.
Owing to adopted technique scheme, used utility model to have following outstanding advantage.
(1) taper artificial hip joint handle helps load-bearing;
(2) some of metal acetabular bone outer surface staggered swallow-tail form band ditches, the toothed belt ditch of screw hole and handle has increased the area and the induced osteogenesis ability of hydroxyapatite, in newly bone is grown into groove, screw hole, will firmly inlay fixedly artificial joint;
(3) hydroxyapatite of sintering or spraying is at zigzag, swallow-tail form band ditch and screw hole inwall, and thickness is 50-100 microns, and this thickness is optimum thickness, and the guiding ossification is arranged.Not easily broken again, do not show loosening yet.
(4) spline of handle tail can be guaranteed at middle position when making handle insert femoral bone cavitas medullaris, and can prevent the axial rotation of handle.
Thus, the artificial hip of none-cement of the present invention closes, and more accords with biomechanical principle, and can reduce its loosening rate to greatest extent.
Be described further for this utility model below in conjunction with accompanying drawing:
Fig. 1 is the vertical section structural map of an embodiment of this utility model none-cement artificial hip joint.
Fig. 2 is that the A of Fig. 1 is to view.
Fig. 3 is the partial enlarged view of Fig. 2.
Fig. 4 is the structural representation of the artificial hip joint handle of the non-edema due to wind pathogen of this utility model clay figurine worker hip joint.
With reference to Fig. 1, this utility model none-cement artificial hip joint mainly is made up of metal acetabular bone (1), plastics mortar (2), screw (3), ballhead (4) and artificial hip joint handle (5).
As shown in the figure, its outer surface of metal acetabular bone (1) has some dovetail band ditches, and several screw holes are arranged.Some toothed belt ditches are arranged at its top of artificial hip joint handle (5).Handle tail has spline.And in zigzag, swallow-tail form, screw hole zone sintering or spray 50-100 microns hydroxyapatite.The structure that this is novel make to be installed and to be kept coupling between this metal acetabular bone (1) bone socket (7), make coupling be installed between artificial hip joint handle (5) and femur (6) medullary cavity, thereby the location of having guaranteed artificial hip joint with fix.
With reference to Fig. 1, it is this utility model none-cement artificial hip joint that is in the user mode.Among the figure: metal acetabular bone (1), screw (3), ballhead (4) and artificial hip joint handle (5) close (TC4) by titanium and make, and plastics mortar (2) is made by ultra high molecular polyethylene.
With reference to Fig. 4, be the structural representation of the artificial hip joint handle of this utility model none-cement artificial hip joint.As seen from the figure, be certain taper on this handle people downwards---narrow down by wide, by thick attenuation.Handle tail has individual spline, and some (2 * 0.5mm) toothed belt ditches are arranged at handle top.Middle position can be guaranteed when new structure makes this utility model none-cement artificial hip joint handle insert femoral bone cavitas medullaris, and bigger weight can be born in medullary cavity.
The series of products physical dimension of this utility model none-cement artificial hip joint handle is provided by table 1, and labelling is represented the series of products type in the table.L, φ are the nominal configuration size (mm) of handle.
During clinical use, in the bone socket (7) behind metal acetabular bone (1) implantation surgery, be screwed into 2-3 screws (3) and be fixed on the bone socket, artificial hip joint handle (5) inserts in femur (6) pulp cavity, has the position of hydroxyapatite can be long as a whole with green bone.And the long thickness with 50-100 microns of artificial prosthesis metal acetabular bone (1) and artificial hip joint handle (5) maintenances at green bone of the hydroxyapatite in swallow-tail form, zigzag zone, this is the main purpose of this utility model none-cement artificial hip joint.
Emphasize to be pointed out that through clinical confirmation, the hydroxyapatite of spraying or sintering 50-100 micron thickness will obtain optimum efficiency in swallow-tail form, zigzag zone.
What will further point out emphatically is, more than explanation is not that this utility model is confined to said embodiment, and those skilled in the art can make many remodeling on this basis, but will can not break away from spirit and the scope that following claim limits.
Table 1 (mm of unit)
| Labelling | L | φ |
| 10MM | 140 | φ10 |
| 11MM | 146 | φ11 |
| 12MM | 142 | φ12 |
| 13MM | 147 | φ13 |
| 14MM | 152 | φ14 |
| 15MM | 157 | φ15 |
| 16MM | 161 | φ16 |
Claims (5)
1, a kind of none-cement artificial hip joint comprises metal acetabular bone (1), plastics mortar (2), screw (3), ballhead (4) and artificial hip joint handle (5), it is characterized in that: some zigzag bar ditches are arranged on the handle top of said artificial hip joint handle (5); Metal acetabular bone (1) outer surface has some staggered swallow-tail form bar ditches, inner face has several screw holes, and in zigzag, swallow-tail form bar ditch and screw hole sintering or spraying hydroxyapatite, thickness is 50-100 microns, and these structures are to reduce the loosening rate of none-cement artificial hip joint to greatest extent.
2, none-cement artificial hip joint according to claim 1 is characterized in that said afterbody at artificial hip joint handle (5) has individual spline, and some zigzag bar ditches (2 * 0.5mm) are arranged at top.
3, none-cement artificial hip joint according to claim 1 and 2 is characterized in that the zigzag bar ditch on the top of said artificial hip joint handle (5) is the border, is 90 ° of angles with the spline axis.
4, none-cement artificial hip joint according to claim 1 is characterized in that the swallow-tail form bar ditch of the outer surface of said metal acetabular bone (1) is crisscross.
5, according to claim 1,4 described none-cement artificial hip joints, the selection that it is characterized in that said metal acetabular bone (1), screw (3), ballhead (4) and artificial hip joint handle (5) is titanium alloy (TC4); The selection of said plastics mortar (2) is a ultra high molecular polyethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94247257 CN2217965Y (en) | 1994-12-12 | 1994-12-12 | Artificial cement hip joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94247257 CN2217965Y (en) | 1994-12-12 | 1994-12-12 | Artificial cement hip joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2217965Y true CN2217965Y (en) | 1996-01-24 |
Family
ID=33852527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94247257 Expired - Lifetime CN2217965Y (en) | 1994-12-12 | 1994-12-12 | Artificial cement hip joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2217965Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102813565A (en) * | 2012-08-18 | 2012-12-12 | 深圳清华大学研究院 | Artificial hip joint |
| CN102905649A (en) * | 2010-03-08 | 2013-01-30 | Hip创新科技有限责任公司 | Interlocking reverse hip and revision prosthesis |
| CN103298431A (en) * | 2010-08-13 | 2013-09-11 | 朴智善 | Femoral lesser trochanter securing device for firmly securing the lesser trochanter and the surrounds and stably strengthening the same so as to allow artificial hip replacement surgery |
| CN103892941A (en) * | 2012-12-26 | 2014-07-02 | 北京爱康宜诚医疗器材股份有限公司 | Rolling type bipolar head |
| CN104093379A (en) * | 2011-12-07 | 2014-10-08 | 史密夫和内修有限公司 | Orthopedic implant augments |
| US9814582B2 (en) | 2011-12-07 | 2017-11-14 | Smith & Nephew, Inc. | Orthopedic augments having recessed pockets |
| CN108403262A (en) * | 2017-08-07 | 2018-08-17 | 北京力达康科技有限公司 | A kind of cobra type type femoral bone end prosthesis |
-
1994
- 1994-12-12 CN CN 94247257 patent/CN2217965Y/en not_active Expired - Lifetime
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102905649A (en) * | 2010-03-08 | 2013-01-30 | Hip创新科技有限责任公司 | Interlocking reverse hip and revision prosthesis |
| CN102905649B (en) * | 2010-03-08 | 2015-11-25 | Hip创新科技有限责任公司 | To interlock contrary hip and jointing repair prosthesis |
| CN103298431A (en) * | 2010-08-13 | 2013-09-11 | 朴智善 | Femoral lesser trochanter securing device for firmly securing the lesser trochanter and the surrounds and stably strengthening the same so as to allow artificial hip replacement surgery |
| CN107595438B (en) * | 2011-12-07 | 2020-12-08 | 史密夫和内修有限公司 | Orthopaedic implant augment |
| CN104093379A (en) * | 2011-12-07 | 2014-10-08 | 史密夫和内修有限公司 | Orthopedic implant augments |
| US9707097B2 (en) | 2011-12-07 | 2017-07-18 | Smith & Nephew, Inc. | Orthopedic implant augments |
| US9814582B2 (en) | 2011-12-07 | 2017-11-14 | Smith & Nephew, Inc. | Orthopedic augments having recessed pockets |
| CN107595438A (en) * | 2011-12-07 | 2018-01-19 | 史密夫和内修有限公司 | Orthopaedic implants reinforcer |
| US11344432B2 (en) | 2011-12-07 | 2022-05-31 | Smith & Nephew, Inc. | Orthopedic implant augments |
| US10383744B2 (en) | 2011-12-07 | 2019-08-20 | Smith & Nephew, Inc. | Orthopedic implant augments |
| US11135067B2 (en) | 2011-12-07 | 2021-10-05 | Smith & Nephew, Inc. | Orthopedic augments having recessed pockets |
| CN102813565A (en) * | 2012-08-18 | 2012-12-12 | 深圳清华大学研究院 | Artificial hip joint |
| CN103892941A (en) * | 2012-12-26 | 2014-07-02 | 北京爱康宜诚医疗器材股份有限公司 | Rolling type bipolar head |
| CN108403262B (en) * | 2017-08-07 | 2020-05-08 | 王岩 | Femoral stem prosthesis |
| CN108403262A (en) * | 2017-08-07 | 2018-08-17 | 北京力达康科技有限公司 | A kind of cobra type type femoral bone end prosthesis |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |