CN106456332A - Surface replacement prosthesis for natural femur head - Google Patents
Surface replacement prosthesis for natural femur head Download PDFInfo
- Publication number
- CN106456332A CN106456332A CN201580019636.3A CN201580019636A CN106456332A CN 106456332 A CN106456332 A CN 106456332A CN 201580019636 A CN201580019636 A CN 201580019636A CN 106456332 A CN106456332 A CN 106456332A
- Authority
- CN
- China
- Prior art keywords
- replacement prosthesis
- surface replacement
- guide finger
- section
- accommodating 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.)
- Pending
Links
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
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3601—Femoral heads ; Femoral endoprostheses for replacing only the epiphyseal or metaphyseal parts of the femur, e.g. endoprosthetic femoral heads or necks directly fixed to the natural femur by internal fixation devices
- A61F2/3603—Femoral heads ; Femoral endoprostheses for replacing only the epiphyseal or metaphyseal parts of the femur, e.g. endoprosthetic femoral heads or necks directly fixed to the natural femur by internal fixation devices implanted without ablation of the whole natural femoral head
-
- 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
- A61F2/28—Bones
- A61F2002/2825—Femur
- A61F2002/2828—Femoral head
-
- 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
- A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
- A61F2002/3006—Properties of materials and coating materials
-
- 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
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30433—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using additional screws, bolts, dowels, rivets or washers e.g. connecting screws
Abstract
The invention relates to a surface replacement prosthesis (1) for the natural femur head (2), comprising an outer spherical surface and an inner receiving space (3) having an inner lateral face and a guide pin (4) on said inner lateral face, which pin projects from the receiving space (3). In order to exclude the risk of micromovements and the resulting destruction of the cement mantle, the guide pin (4) has an out-of-round cross-section at least in sections of its length.
Description
Technical field
The present invention relates to a kind of be used for innately capital surface replacement prosthesis, this surface replacement prosthesis carries outside ball
The surface of shape and internal accommodating chamber, this accommodating chamber carries on internal side face and side face internally from leading that accommodating chamber is stretched out
To pin.
Background technology
Surface replacement prosthesis are also referred to as repairing surface head, hip cover (H ü ftkappe) or cover prosthese.
In the case of the abrasion of born femoral head or hip head (Caputfemoris), according to known in the art
It is to fix by being placed on femoral head by the surface replacement prosthesis that metal or pottery form and using bone binding agent.Surface
Replacement prosthesises are only replaced capital articular cartilage and are not substantially had in shape or structure in the femur under articular cartilage
Have and used during damage.
Or that the outer surface of this surface replacement prosthesis constructs globulate and be directly placed in born pelvis
It is placed in artificial acetabular bone, this acetabular bone is fixed in born pelvis again.
The surface replacement prosthesis of pottery so far largely rely on the design of known metal and substantially by
Bonding.The internal circumferential surface in inner containment chamber is provided with binding agent recess and guide finger.
In the case of repairing complex surface, the surface forming joint is replaced.Acetabular bone is utilized metal-back displacement, and it is directly
Grow in the bone of basin bone and have the polished metal surface as articular surface.Contrary with traditional mode, in thigh
The hip head at place and neck of femur will not be removed, but such finishing, you can a small amount of bone is utilized by the metal cap with guide finger
Head binding agent is placed.
This guide finger has rotational symmetric geometry according to prior art.This pin is currently only used for guiding.Rotation
Stability only to be realized by bonding.The breaking-up of the dynamic risk of micro-shifting and consequent binding agent side face is using mode now
Can not be excluded.
Content of the invention
It is an object of the invention to, the surface replacement prosthesis of preamble according to claim 1 are so modified, that is,
The dynamic risk of micro-shifting and the breaking-up of consequent binding agent side face are excluded.
According to the present invention, this purpose is realized by the surface replacement prosthesis of feature according to claim 1.
By make guide finger be configured in cross-section at least in the subregion of its length non-round so that this implantation
Surface replacement prosthesis can not rotate again, therefore ensure that rotational stabilization and the thus exclusion risk of micromotion and thus producing
Binding agent side face breaking-up.
Guide finger is preferably configured to non-round over the whole length in cross-section.Thus can compensate for higher torsion
And ensure to repair the rotational stabilization of surface head.
In preferred form of implementation guide finger be configured in cross-section ellipse or have corner angle, preferably rectangle
's.The material of surface replacement prosthesis is preferably metal or pottery.Pottery is to be difficult human relations due to the friction of its hardness and shortage
Ratio and be more and more used to and for required for market.
Specific embodiment
Next the present invention is expanded on further with reference to the accompanying drawings.
The born femoral head 2 with the people being placed with surface replacement prosthesis 1 is respectively illustrated in Fig. 1 a and 1b.Surface is put
Change prosthese 1 to be made up of metal in fig 1 a and be made up of pottery in Figure 1b.Can be seen that guide finger 4 in fig 1 a, it is from table
Accommodating chamber 3 in face replacement prosthesises 1 is stretched out.Surface replacement prosthesis 1 are also known as repairing surface head.According to the present invention, guide finger 4
It is configured to non-round at least in the subregion of its length in cross-section.Although the cross section of guide finger 4 ellipse or
The design of person's rectangle is preferred, but rotational stabilization can pass through arbitrary non-round being designed to ensure that.
Fig. 3 a to 3d shows the cross section through different guide fingers 4.Fig. 3 a shows leading with triangular cross section
To pin 4.Fig. 3 b shows the guide finger 4 with oval cross section.Fig. 3 c shows the guide finger with square cross section
4.Fig. 3 d shows the guide finger 4 with rectangular cross section.
Fig. 2 b shows the roentgen's photography with the surface replacement prosthesis 1 being placed on born femoral head 2, and this femoral head is again
It is presented in metal-back 5.Metal-back 5 is implanted in the born pelvis 6 of patient.Can well identify, guide finger 4 has not
The cross section (see Fig. 3) of circle.
Fig. 2 a shows the surface replacement prosthesis 1 according to the present invention, and this surface replacement prosthesis carries outside spherical table
Face and internal accommodating chamber 3, this accommodating chamber carries the guide finger stretching out on internal side face and side face internally from accommodating chamber 3
4.The cross section of guide finger 4 is configured to non-round.Surface replacement prosthesis 1 are presented to metal-back 5 using its spherical surface
Ball cap in.
Fig. 2 c shows the femur of the femoral head 2 of the patient with Fig. 2 b, and wherein surface replacement prosthesis 1 are placed to femur
On 2.Surface replacement prosthesis 1 are made up of ceramic material.
Claims (4)
1. a kind of surface replacement prosthesis (1) for born femoral head (2), described surface replacement prosthesis carry the spherical of outside
Surface and internal accommodating chamber (3), described accommodating chamber carry internal side face and from described accommodating chamber (3) stretch out described interior
Guide finger (4) on the side face in portion it is characterised in that described guide finger (4) at least in the subregion of its length transversal
It is configured to non-round in face.
2. surface replacement prosthesis (1) according to claim 1 are it is characterised in that described guide finger (4) is in its whole length
On be configured in described cross section non-round.
3. surface replacement prosthesis (1) according to claim 1 and 2 are it is characterised in that described guide finger (4) is in cross section
In be configured to ellipse or having corner angle it is therefore preferable to rectangle.
4. the surface replacement prosthesis according to any one of Claim 1-3 (1) are it is characterised in that described surface replacement is false
The material of body (1) is metal or pottery.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014207136 | 2014-04-14 | ||
| DE102014207136.4 | 2014-04-14 | ||
| PCT/EP2015/056678 WO2015158526A1 (en) | 2014-04-14 | 2015-03-27 | Surface replacement prosthesis for natural femur head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106456332A true CN106456332A (en) | 2017-02-22 |
Family
ID=52781073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580019636.3A Pending CN106456332A (en) | 2014-04-14 | 2015-03-27 | Surface replacement prosthesis for natural femur head |
Country Status (6)
| Country | Link |
|---|---|
| KR (1) | KR20160145111A (en) |
| CN (1) | CN106456332A (en) |
| BR (1) | BR112016023830A2 (en) |
| DE (1) | DE102015205583A1 (en) |
| RU (1) | RU2016144388A (en) |
| WO (1) | WO2015158526A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU176945U1 (en) * | 2017-07-31 | 2018-02-02 | Ильдар Фуатович Ахтямов | TOTAL HIP JOINT SPACER |
| RU2663628C1 (en) * | 2017-08-25 | 2018-08-07 | Денис Игоревич Варфоломеев | Hip joint spacer |
| WO2019057434A1 (en) | 2017-09-21 | 2019-03-28 | Ceramtec Gmbh | Replacement prosthesis for natural femur head |
| RU2680771C1 (en) * | 2018-05-10 | 2019-02-26 | Денис Игоревич Варфоломеев | Hip joint spacer |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT471394B (en) * | 1950-12-04 | 1952-05-14 | ||
| US2679245A (en) * | 1950-03-20 | 1954-05-25 | Timmermans Frans Donatus | Prosthesis for femoral heads |
| EP2621410A1 (en) * | 2010-09-29 | 2013-08-07 | Zimmer, Inc. | Pyrolytic carbon implants with porous fixation component and methods of making the same |
-
2015
- 2015-03-27 RU RU2016144388A patent/RU2016144388A/en unknown
- 2015-03-27 BR BR112016023830A patent/BR112016023830A2/en not_active IP Right Cessation
- 2015-03-27 CN CN201580019636.3A patent/CN106456332A/en active Pending
- 2015-03-27 DE DE102015205583.3A patent/DE102015205583A1/en not_active Withdrawn
- 2015-03-27 WO PCT/EP2015/056678 patent/WO2015158526A1/en active Application Filing
- 2015-03-27 KR KR1020167031566A patent/KR20160145111A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| RU2016144388A (en) | 2018-05-18 |
| KR20160145111A (en) | 2016-12-19 |
| DE102015205583A1 (en) | 2015-10-15 |
| BR112016023830A2 (en) | 2017-08-15 |
| WO2015158526A1 (en) | 2015-10-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170222 |
|
| WD01 | Invention patent application deemed withdrawn after publication |