DE3806870A1 - Joint prosthesis intended to be implanted by cementing - Google Patents
Joint prosthesis intended to be implanted by cementingInfo
- Publication number
- DE3806870A1 DE3806870A1 DE19883806870 DE3806870A DE3806870A1 DE 3806870 A1 DE3806870 A1 DE 3806870A1 DE 19883806870 DE19883806870 DE 19883806870 DE 3806870 A DE3806870 A DE 3806870A DE 3806870 A1 DE3806870 A1 DE 3806870A1
- Authority
- DE
- Germany
- Prior art keywords
- joint prosthesis
- joint
- surface layer
- shaft
- end plate
- 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.)
- Granted
Links
- 239000002344 surface layer Substances 0.000 claims abstract description 14
- 210000004394 hip joint Anatomy 0.000 claims abstract description 9
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 5
- 229910001069 Ti alloy Inorganic materials 0.000 claims abstract description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 238000009792 diffusion process Methods 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 239000007943 implant Substances 0.000 description 4
- 230000002028 premature Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
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
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
-
- 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
- A61F2/3662—Femoral shafts
-
- 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
- A61F2/30721—Accessories
- A61F2/30728—Collars; Bone edge protectors
-
- 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
- A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
-
- 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
- A61F2/3662—Femoral shafts
- A61F2/367—Proximal or metaphyseal parts of shafts
-
- 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
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/3082—Grooves
-
- 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
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2002/30922—Hardened surfaces
-
- 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
- A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
- A61F2002/3625—Necks
- A61F2002/3631—Necks with an integral complete or partial peripheral collar or bearing shoulder at its base
-
- 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
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00005—The prosthesis being constructed from a particular material
- A61F2310/00011—Metals or alloys
- A61F2310/00023—Titanium or titanium-based alloys, e.g. Ti-Ni alloys
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)
- Materials For Medical Uses (AREA)
Abstract
Description
Die Erfindung bezieht sich gattungsgemäß auf eine Gelenkpro these, die zum Einbau durch Einzementieren bestimmt ist, ins besondere auf eine Hüftgelenkprothese mit in den Markkanal eines Gelenkknochens einsetzbarem Schaft, Abschlußteller und Gelenkkugelteil oder Gelenkkugelanschlußteil, wobei der Schaft mit dem Abschlußteller aus einer Titanlegierung besteht und wobei der eingebaute Schaft einschließlich des Abschlußtel lers Belastungsbereiche und Bereiche reduzierter Belastung aufweist. - Titanlegierung bezeichnet im Rahmen der Erfindung für Implantate übliche Titanbasislegierungen, insbesondere solche mit Aluminium und/oder Eisen als Legierungselemente.The invention relates generically to a joint pro thesis, which is intended for installation by cementing, ins especially on a hip joint prosthesis in the medullary canal an articulated shaft, end plate and Articulated ball part or articulated ball connection part, the shaft with the end plate consists of a titanium alloy and the built-in shaft including the end tel load areas and areas of reduced load having. - Titanium alloy referred to in the context of the invention Titanium base alloys customary for implants, in particular those with aluminum and / or iron as alloying elements.
Bei der bekannten Gelenkprothese, von der die Erfindung aus geht, ist die Oberfläche unbehandelt, wenngleich sie regel mäßig eine Titanoxidschicht trägt. Nach Einbau durch Zemen tieren zeigt sich im Einsatz erhöhter abrasiver Verschleiß an dem Implantat, sobald eine erste Lockerung im System Knochen/Zement/Implantat aufgetreten ist. Im Anschluß daran tritt eine beschleunigte abrasive Zerstörung ein. Das macht vorzeitige Nachoperationen erforderlich.In the known joint prosthesis, from which the invention the surface is untreated, although it does rule moderately wears a titanium oxide layer. After installation by Zemen animals shows up in the use of increased abrasive wear on the implant as soon as a first loosening in the system Bone / cement / implant has occurred. After that accelerated abrasive destruction occurs. That makes premature follow-up surgery required.
Der Erfindung liegt die Aufgabe zugrunde, eine Gelenkprothese des beschriebenen Aufbaus so weiter auszubilden, daß im Ein satz ein vorzeitiger abrasiver Verschleiß nicht mehr auftritt.The invention has for its object a joint prosthesis of the structure described so that in the one premature abrasive wear no longer occurs.
Zur Lösung dieser Aufgabe lehrt die Erfindung, daß zumindest die Belastungsbereiche eine gehärtete Oberflächenschicht auf weisen. Nach bevorzugter Ausführungsform der Erfindung ist die Oberflächenschicht durch Stickstoffdiffusion gehärtet.To achieve this object, the invention teaches that at least the load areas have a hardened surface layer point. According to a preferred embodiment of the invention the surface layer hardened by nitrogen diffusion.
Im Rahmen der Erfindung liegt es, die gesamte Gelenkprothese in der beschriebenen Weise mit einer gehärteten Oberflächen schicht zu versehen. Im allgemeinen ist es ausreichend, die Anordnung so zu treffen, daß der Schaft im Anschluß an den Abschlußteller über eine Länge von einigen Zentimetern mit der gehärteten Oberflächenschicht versehen ist, was aus wirt schaftlichen Gründen zweckmäßig ist. Es empfiehlt sich, auch den Abschlußteller auf seiner gelenkknochenseitigen Unterseite mit der gehärteten Oberflächenschicht auszurüsten.The entire joint prosthesis is within the scope of the invention in the manner described with a hardened surface layer. In general, it is sufficient that Arrangement to be made so that the shaft following the End plate with a length of a few centimeters the hardened surface layer is provided, what from economic reasons is appropriate. It is recommended, too the end plate on its underside on the side of the joint bone to be equipped with the hardened surface layer.
Die erreichten Vorteile sind darin zu sehen, daß beim Einbau einer erfindungsgemäßen Gelenkprothese durch Einzementieren vorzeitige Nachoperationen, die auf abrasivem Verschleiß des Implantates beruhen, nicht mehr erforderlich sind.The advantages achieved can be seen in the fact that when installing a joint prosthesis according to the invention by cementing premature follow-up operations based on abrasive wear on the Implants are based, are no longer required.
Im folgenden wird die Erfindung anhand einer lediglich ein Ausführungsbeispiel darstellenden Zeichnung ausführlicher er läutert, und zwar am Beispiel einer Hüftgelenkprothese. Es zeigen in schematischer DarstellungIn the following, the invention is based on only one Embodiment representing drawing in more detail he refines, using the example of a hip joint prosthesis. It show in a schematic representation
Fig. 1 einen Längsschnitt durch eine erfindungsgemäße Hüft gelenkprothese, Fig. 1 shows a longitudinal section through a hip joint prosthesis,
Fig. 2 den vergrößerten Ausschnitt A aus dem Gegenstand nach Fig. 1 und Fig. 2 shows the enlarged section A from the object of FIG. 1 and
Fig. 3 in gegenüber der Fig. 1 vergrößertem Maßstab einen Schnitt in Richtung B-B durch den Gegenstand nach Fig. 1. Fig. 3 in comparison with FIG. 1 on an enlarged scale a section along BB by the subject matter of FIG. 1.
Die in den Figuren dargestellte Hüftgelenkprothese ist mit einem in den Markkanal eines nicht dargestellten Hüftgelenk knochens einsenkbaren Schaft 1, mit einem Abschlußteller 2 und einem Gelenkkugelanschlußteil 3 versehen. Der Schaft 1 wird in den Knochen einzementiert. Der Schaft 1 mit dem Ab schlußteller 2 und auch dem Gelenkanschlußteil 3 bestehen aus Titan. Im übrigen tragen der Schaft 1 und andere Bauteile eine gehärtete Oberflächenschicht 4 aus hauptsächlich Titan nitrid. Es versteht sich, daß der eingebaute Schaft 1 ein schließlich des Abschlußtellers 2 bei der Bewegung eines Pa tienten, der mit einer Hüftgelenkprothese versehen ist, be reichsweise unterschiedliche Beanspruchungen erfährt. Deut lich unterschieden werden kann zwischen Belastungsbereichen B und Bereichen reduzierter Belastung R.The hip joint prosthesis shown in the figures is provided with a shaft 1 which can be countersunk into the medullary canal of a hip joint (not shown ) , with an end plate 2 and a joint ball connecting part 3 . The shaft 1 is cemented into the bone. The shaft 1 with the end plate from 2 and also the joint connecting part 3 are made of titanium. Otherwise, the shaft 1 and other components have a hardened surface layer 4 made mainly of titanium nitride. It is understood that the built-in shaft 1 a finally the end plate 2 during the movement of a patient, who is provided with a hip joint prosthesis, experiences a lot of different stresses. A clear distinction can be made between load areas B and areas of reduced load R.
Aus den Fig. 1 und 2 entnimmt man, daß die Oberflächenschicht 4 bereichsweise angeordnet ist. Sie wurde übertrieben dick gezeichnet. Diese Bereiche sind die Belastungsbereiche. Die anderen Bereiche sind die Bereiche reduzierter Belastung.From Figs. 1 and 2, it removes that the surface layer 4 is arranged in regions. It was drawn too thick. These areas are the stress areas. The other areas are the areas of reduced stress.
Im Ausführungsbeispiel und nach bevorzugter Ausführungsform der Erfindung ist jedenfalls der Schaft 1 im Anschluß an den Abschlußteller 2 über eine Länge von einigen Zentimetern mit der Oberflächenschicht 4 versehen. Im Ausführungsbeispiel ist auch der Abschlußteller 2 auf seiner hüftgelenkknochenseitigen Unterseite mit einer gehärteten Oberflächenschicht 4 ausgerüstet.In the exemplary embodiment and according to a preferred embodiment of the invention, the shaft 1 is in any case provided with the surface layer 4 following the end plate 2 over a length of a few centimeters. In the exemplary embodiment, the end plate 2 is also equipped with a hardened surface layer 4 on its underside on the side of the hip joint.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19883806870 DE3806870A1 (en) | 1988-03-03 | 1988-03-03 | Joint prosthesis intended to be implanted by cementing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19883806870 DE3806870A1 (en) | 1988-03-03 | 1988-03-03 | Joint prosthesis intended to be implanted by cementing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3806870A1 true DE3806870A1 (en) | 1989-09-14 |
| DE3806870C2 DE3806870C2 (en) | 1990-11-29 |
Family
ID=6348719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19883806870 Granted DE3806870A1 (en) | 1988-03-03 | 1988-03-03 | Joint prosthesis intended to be implanted by cementing |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE3806870A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4006311A1 (en) * | 1990-03-01 | 1991-09-05 | Peter Brehm Chirurgie Mechanik | Knee-joint prosthesis with plateau part - incorporates recess which receives replaceable bearing plate |
| US5290311A (en) * | 1990-01-21 | 1994-03-01 | Friedrich Baumann | Femoral head shaft prosthesis |
| EP0640323A1 (en) * | 1993-08-23 | 1995-03-01 | Bristol-Myers Squibb Company | Femoral stem prosthesis |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4411974C2 (en) * | 1994-04-07 | 1999-05-20 | Elektrometallurgie Gmbh | Implants made of titanium materials with accelerated bone ingrowth and process for their production |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1943801A1 (en) * | 1968-07-10 | 1970-04-23 | Straumann Inst Ag | Implanted object made of titanium or a titanium-based - alloy for bone surgery |
-
1988
- 1988-03-03 DE DE19883806870 patent/DE3806870A1/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1943801A1 (en) * | 1968-07-10 | 1970-04-23 | Straumann Inst Ag | Implanted object made of titanium or a titanium-based - alloy for bone surgery |
Non-Patent Citations (1)
| Title |
|---|
| Prospekt der Fa.Interplanta "SP-Hüftprothese aus Tilastan" * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5290311A (en) * | 1990-01-21 | 1994-03-01 | Friedrich Baumann | Femoral head shaft prosthesis |
| DE4006311A1 (en) * | 1990-03-01 | 1991-09-05 | Peter Brehm Chirurgie Mechanik | Knee-joint prosthesis with plateau part - incorporates recess which receives replaceable bearing plate |
| EP0640323A1 (en) * | 1993-08-23 | 1995-03-01 | Bristol-Myers Squibb Company | Femoral stem prosthesis |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3806870C2 (en) | 1990-11-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |