DE19650816A1 - Künstliches Fingergelenk - Google Patents
Künstliches FingergelenkInfo
- Publication number
- DE19650816A1 DE19650816A1 DE19650816A DE19650816A DE19650816A1 DE 19650816 A1 DE19650816 A1 DE 19650816A1 DE 19650816 A DE19650816 A DE 19650816A DE 19650816 A DE19650816 A DE 19650816A DE 19650816 A1 DE19650816 A1 DE 19650816A1
- Authority
- DE
- Germany
- Prior art keywords
- joint
- finger joint
- finger
- phalanx
- stem
- 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
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
- A61F2/42—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes
- A61F2/4241—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for hands, e.g. fingers
-
- 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
- A61F2002/30004—Material related properties of the prosthesis or of a coating on the prosthesis the prosthesis being made from materials having different values of a given property at different locations within the same prosthesis
- A61F2002/30014—Material related properties of the prosthesis or of a coating on the prosthesis the prosthesis being made from materials having different values of a given property at different locations within the same prosthesis differing in elasticity, stiffness or compressibility
-
- 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
- A61F2002/30108—Shapes
- A61F2002/30199—Three-dimensional shapes
- A61F2002/30224—Three-dimensional shapes cylindrical
-
- 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
-
- 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
- A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
- A61F2002/30354—Cylindrically-shaped protrusion and recess, e.g. cylinder of circular basis
-
- 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
- A61F2002/30462—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements retained or tied with a rope, string, thread, wire or cable
-
- 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
- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30537—Special structural features of bone or joint prostheses not otherwise provided for adjustable
- A61F2002/30546—Special structural features of bone or joint prostheses not otherwise provided for adjustable for adjusting elasticity, flexibility, spring rate or mechanical tension
-
- 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
- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30565—Special structural features of bone or joint prostheses not otherwise provided for having spring elements
- A61F2002/30571—Leaf springs
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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
- A61F2/30767—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
- A61F2002/30795—Blind bores, e.g. of circular cross-section
-
- 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
- A61F2/30907—Nets or sleeves applied to surface of prostheses or in cement
- A61F2002/30909—Nets
-
- 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
- A61F2002/3092—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth having an open-celled or open-pored structure
-
- 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
- A61F2/42—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes
- A61F2/4241—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for hands, e.g. fingers
- A61F2002/4243—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for hands, e.g. fingers for interphalangeal joints, i.e. IP joints
-
- 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
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2002/4631—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor the prosthesis being specially adapted for being cemented
-
- 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
- A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
-
- 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
- A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2220/0033—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
-
- 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
- A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2220/0075—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements sutured, ligatured or stitched, retained or tied with a rope, string, thread, wire or cable
-
- 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
- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2230/0063—Three-dimensional shapes
- A61F2230/0069—Three-dimensional shapes cylindrical
-
- 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
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0004—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof adjustable
- A61F2250/0012—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof adjustable for adjusting elasticity, flexibility, spring rate or mechanical tension
-
- 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
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0014—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
- A61F2250/0029—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in bending or flexure capacity
-
- 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
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)
Description
Die vorliegende Erfindung betrifft ein Fingergelenk zur Überbrückung des
natürlichen, resezierten Fingergelenks zwischen dem Phalanx mediae und dem
Phalanx distalis.
Wird bei einem Patienten ein Strecksehnenanriß diagnostiziert, so äußert sich
dies in der für den Patienten unangenehmen Weise dadurch, daß er zwar das
Endgelenk des betroffenen Fingers beugen kann, allerdings keine Möglichkeit
besteht, den Finger wieder voll zu strecken. Dies eben aufgrund der fehlenden
Zugkräfte der Strecksehne. Eine Wiederanbindung der abgerissenen
Strecksehne ist aber praktisch unmöglich.
Aufgabe der vorliegenden Erfindung ist es daher, ein Fingergelenk der
eingangs genannten Art anzugeben, mit dessen Hilfe ein Finger bei
Strecksehnenabriß wieder in gestreckte Lage gebracht werden kann.
Gelöst wird die Aufgabe durch das Fingergelenk mit den Merkmalen des
Anspruchs 1. Weitere vorteilhafte Weiterbildungen ergeben sich aus den
Unteransprüchen.
Dementsprechend ist vorgesehen, daß das Fingergelenk aus zwei Stielteilen
besteht, die jeweils in den Phalanx mediae bzw. Phalanx distalis setzbar sind
und dort zu verankern sind. Dies kann zementlos oder mittels Knochenzement
geschehen. Beide Stielteile sind untereinander mittels eines biegbaren
Verbindungselementes verbindbar. Dieses Verbindungselement besteht aus
einem Material, das - wenn das Gelenk gebeugt wird - Rückstellkräfte
entwickelt, welche das Gelenk in die gestreckte Lage zurückdrängt.
Die Ruhelage oder die entspannte Lage des erfindungsgemäßen Fingergelenks
ist also die gestreckte Lage. Aufgrund dieser Eigenschaft wird die Funktion
der abgerissenen Strecksehne nachempfunden.
Zur Implantation wird die Gelenkkapsel des betroffenen Endgelenkes reseziert
derart, daß die Kondylen und Laufflächen des natürlichen Gelenks entfernt
werden. Dann werden die Knochen Phalanx mediae und Phalanx distalis zur
Aufnahme jeweils eines der beiden Stielteile präpariert, d. h. ausgefräst. In die
Aushöhlung wird jeweils ein Stielteil gesetzt, entweder unter Anwendung eines
Knochenzements, wie Polymethylmetacrylat oder zementlos, wobei dann die
Oberflächen der Stielteile speziell ausgebildet sein müssen, wie weiter unten
näher erläutert wird.
Gemäß einer besonderen Ausführungsform besteht das biegbare
Verbindungselement aus einer Vielzahl von Silikonstäben, welche in
entsprechende Bohrungen in den Stielteilen setzbar sind. Das Silikon ist in
seiner Shore-Härte so einzustellen, daß es die Rückstellkräfte auf die Beugung
des Gelenkes hin erzeugen kann.
Gemäß einer anderen Ausführungsform besteht das Verbindungselement aus
einer an den Stielteilen angebrachten elastischen Kunststoffbrücke.
Die Stielteile bestehen im übrigen vorzugsweise aus körperverträglichem
Metall.
Für eine zementlose Fixation der Stielteile in den Knochen ist es besonders
vorteilhaft, wenn die Oberfläche der Stielteile zumindest bereichsweise mit
einer dreidimensionalen, offenmaschigen Raumnetzstruktur belegt ist, welche
auch als interkonnektierend bezeichnet wird. Durch diese Oberflächenstruktur
kann Knochenmaterial hindurchwachsen und die Stege oder Maschenwendeln
umwachsen, so daß dementsprechend auch ein Substratfluß in die räumliche
Tiefe der Oberfläche hinein stattfinden kann. Diese Strukturoberfläche dient
zum dauerhaften Hindurchwachsen von Knochenmaterial in die Implantate,
woraus eine hervorragende Langzeitstabilität resultiert.
Die Erfindung wird nun anhand von Ausführungsbeispielen gemäß der
Zeichnungsfiguren näher erläutert. Hierbei zeigt:
Fig. 1 schematisch die Implantationslage der Stielteile in einem Finger,
Fig. 2 eine perspektivische Ansicht eines ersten Ausführungsbeispiels,
Fig. 3 die Aufsicht auf ein zweites Ausführungsbeispiel, und
Fig. 4 die Seitenansicht des Implantates gemäß Fig. 3.
Nachfolgend sind entsprechende Teile beider Ausführungsbeispiele des
künstlichen Fingergelenks mit denselben Bezugszeichen versehen.
Fig. 1 veranschaulicht die Implantationsposition des Fingergelenks in situ. Das
von einem Strecksehnenabriß in Mitleidenschaft gezogenen Fingerendgelenk 10
wird operativ geöffnet und im Phalanx mediae 12 und im Phalanx distalis 11
jeweils eine Ausfräsung vorgenommen. In die Ausfräsungen werden zwei
Stielteile 1 und 2 des Fingergelenkes gesetzt. Diese weisen an ihrer Basis
Bohrungen 5 auf für die Aufnahme von biegsamen Stäben 4 auf (Fig. 2),
welche die benötigten Rückstellkräfte erzeugen, wenn das äußere Fingerglied
angewinkelt wird. Einzelheiten lassen sich aus der Fig. 2 ersehen. Vorliegend
sind vier Stäbe 4 vorgesehen, welche zusammen das Verbindungselement 3
bilden. Die Rückstellkräfte des Fingerendgelenks lassen sich individuell
einstellen durch Auswahl des Materials für die Stäbe 4 sowie durch Wahl von
deren Dicke. Die Stäbe werden in das Innere der Stielteile 1 und 2 in die
Bohrungen 5 gesetzt. Bohrungsdurchmesser und Stabdurchmesser sind so
aufeinander abgestimmt, daß ein dauerhafter Halt gegeben ist.
Eine andere Ausführungsform zeigt Fig. 3. Dort besteht das
Verbindungselement 3 aus einer Kunststoffbrücke 6 zwischen den ansonsten
metallischen Stielteilen 1 und 2. Aus der Seitenansicht gemäß Fig. 4 ist
erkennbar, wie die Kunststoffbrücke 6 im Profil ausgestattet ist, nämlich so,
daß tatsächlich eine Abwinkelung der Stielteile 1 und 2 zueinander möglich ist,
d. h., daß die Kunststoffbrücke 6 profiliert ausgeformt ist.
In diesem Ausführungsbeispiel weisen die Stielteile 1 und 2 eine
dreidimensionale offenmaschige Raumnetzstruktur 7 an ihrer Oberfläche auf,
welche einer interkonnektierende Oberflächenstruktur darstellt, durch welche
die Sekundärfixation durch Hindurchwachsen von Knochenmaterial
sichergestellt ist.
Claims (4)
1. Künstliches Fingergelenk zur Überbrückung des natürlichen, resezierten
Fingerendgelenks zwischen dem Phalanx mediae und dem Phalanx
distalis, bestehend aus einem im Phalanx mediae zu verankernden
Stielteil (1) und einem im Phalanx distalis zu verankernden Stielteil (2),
bei dem beide Stielteile (1, 2) mittels eines biegbaren
Verbindungselementes (3) verbindbar sind, welches - auf eine Beugung
des Gelenkes hin - das Gelenk in gestreckte Lage drängende
Rückstellkräfte entwickelt.
2. Fingergelenk nach Anspruch 1, bei dem das Verbindungselement (3)
aus einer Mehrzahl von Silikonstäben (4) besteht, die in entsprechende
Bohrungen (5) in den Stielteilen (1, 2) setzbar sind.
3. Fingergelenk nach Anspruch 1, bei dem das Verbindungselement (3)
aus einer an den Stielteilen (1, 2) angebrachte elastische
Kunststoffbrücke (6) besteht.
4. Fingergelenk nach einem der Ansprüche 1 bis 3, bei dem die
Oberfläche der Stielteile (1, 2) zumindest bereichsweise mit einer
dreidimensionalen, offenmaschigen Raumnetzstruktur (7) belegt ist.
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19650816A DE19650816B9 (de) | 1996-12-09 | 1996-12-09 | Künstliches Fingergelenk |
AT97953758T ATE201581T1 (de) | 1996-12-09 | 1997-12-09 | Künstliches fingergelenk |
EP97953758A EP0939607B1 (de) | 1996-12-09 | 1997-12-09 | Künstliches fingergelenk |
ES97953758T ES2159156T3 (es) | 1996-12-09 | 1997-12-09 | Articulacion interfalangica artificial. |
JP52619898A JP2001505789A (ja) | 1996-12-09 | 1997-12-09 | 人工指関節 |
DE59703695T DE59703695D1 (de) | 1996-12-09 | 1997-12-09 | Künstliches fingergelenk |
PCT/EP1997/006853 WO1998025551A1 (de) | 1996-12-09 | 1997-12-09 | Künstliches fingergelenk |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19650816A DE19650816B9 (de) | 1996-12-09 | 1996-12-09 | Künstliches Fingergelenk |
Publications (3)
Publication Number | Publication Date |
---|---|
DE19650816A1 true DE19650816A1 (de) | 1998-06-18 |
DE19650816B4 DE19650816B4 (de) | 2004-11-11 |
DE19650816B9 DE19650816B9 (de) | 2005-02-17 |
Family
ID=7813933
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19650816A Expired - Fee Related DE19650816B9 (de) | 1996-12-09 | 1996-12-09 | Künstliches Fingergelenk |
DE59703695T Expired - Fee Related DE59703695D1 (de) | 1996-12-09 | 1997-12-09 | Künstliches fingergelenk |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE59703695T Expired - Fee Related DE59703695D1 (de) | 1996-12-09 | 1997-12-09 | Künstliches fingergelenk |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0939607B1 (de) |
JP (1) | JP2001505789A (de) |
AT (1) | ATE201581T1 (de) |
DE (2) | DE19650816B9 (de) |
ES (1) | ES2159156T3 (de) |
WO (1) | WO1998025551A1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10109804A1 (de) * | 2001-03-01 | 2002-09-26 | Mathys Medizinaltechnik Ag Bet | Gelenkprothese |
EP1438937A1 (de) * | 2003-01-17 | 2004-07-21 | ESKA Implants GmbH & Co. | Fingerprothese |
WO2005087145A1 (en) * | 2004-03-12 | 2005-09-22 | University College London | Prosthetic limb attachment |
DE102005020779B4 (de) * | 2004-12-03 | 2009-11-05 | Aequos Endoprothetik Gmbh | Künstliches Gelenkelement sowie ein damit ausgestattetes Greifwerkzeug |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2252840A1 (de) * | 1971-10-27 | 1973-05-03 | Rhone Poulenc Sa | Gelenkprothese |
DE3021443A1 (de) * | 1979-06-07 | 1980-12-11 | Bristol Myers Co | Gelenkprothese |
EP0396519A1 (de) * | 1989-04-25 | 1990-11-07 | Per-Ingvar Branemark | Verankerungselement zum Halten eines Gelenkteils eines Fingers oder anderer künstlicher Gelenke |
US5011497A (en) * | 1987-10-29 | 1991-04-30 | Atos Medical Ab | Joint prosthesis |
US5491882A (en) * | 1993-12-28 | 1996-02-20 | Walston; D. Kenneth | Method of making joint prosthesis having PTFE cushion |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3990116A (en) * | 1974-10-17 | 1976-11-09 | Fixel Irving E | Pretensioned prosthetic device for skeletal joints |
GB1582450A (en) * | 1978-01-30 | 1981-01-07 | Kearney J A | Polypropylene finger joint implants |
DE3741488A1 (de) * | 1987-12-08 | 1989-06-22 | Roland Man Druckmasch | Gelenkprothese fuer ein hueft- oder kniegelenk |
CA2070586C (en) * | 1991-06-10 | 1995-11-28 | Barry Eppley | Prosthetic implant |
DE19512854C1 (de) * | 1995-04-06 | 1996-08-01 | Eska Medical Gmbh & Co | Fingergelenk |
US5534033A (en) * | 1995-06-05 | 1996-07-09 | Carbomedics, Inc. | Orthopedic prosthetic implants with pyrolytic carbon or ceramic articulating surfaces |
FR2736536B1 (fr) * | 1995-07-11 | 1997-08-22 | Cahlik Marc Andre | Prothese articulaire de doigt |
-
1996
- 1996-12-09 DE DE19650816A patent/DE19650816B9/de not_active Expired - Fee Related
-
1997
- 1997-12-09 AT AT97953758T patent/ATE201581T1/de not_active IP Right Cessation
- 1997-12-09 DE DE59703695T patent/DE59703695D1/de not_active Expired - Fee Related
- 1997-12-09 EP EP97953758A patent/EP0939607B1/de not_active Expired - Lifetime
- 1997-12-09 ES ES97953758T patent/ES2159156T3/es not_active Expired - Lifetime
- 1997-12-09 JP JP52619898A patent/JP2001505789A/ja active Pending
- 1997-12-09 WO PCT/EP1997/006853 patent/WO1998025551A1/de active IP Right Grant
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2252840A1 (de) * | 1971-10-27 | 1973-05-03 | Rhone Poulenc Sa | Gelenkprothese |
DE3021443A1 (de) * | 1979-06-07 | 1980-12-11 | Bristol Myers Co | Gelenkprothese |
US5011497A (en) * | 1987-10-29 | 1991-04-30 | Atos Medical Ab | Joint prosthesis |
EP0396519A1 (de) * | 1989-04-25 | 1990-11-07 | Per-Ingvar Branemark | Verankerungselement zum Halten eines Gelenkteils eines Fingers oder anderer künstlicher Gelenke |
US5491882A (en) * | 1993-12-28 | 1996-02-20 | Walston; D. Kenneth | Method of making joint prosthesis having PTFE cushion |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10109804A1 (de) * | 2001-03-01 | 2002-09-26 | Mathys Medizinaltechnik Ag Bet | Gelenkprothese |
DE10109804C2 (de) * | 2001-03-01 | 2003-04-03 | Mathys Medizinaltechnik Ag Bet | Gelenkprothese |
US7244274B2 (en) | 2001-03-01 | 2007-07-17 | Mathys Medizinaltechnik Ag | Joint prosthesis |
EP1438937A1 (de) * | 2003-01-17 | 2004-07-21 | ESKA Implants GmbH & Co. | Fingerprothese |
WO2005087145A1 (en) * | 2004-03-12 | 2005-09-22 | University College London | Prosthetic limb attachment |
US8268011B2 (en) | 2004-03-12 | 2012-09-18 | University College London | Prosthetic limb attachment |
DE102005020779B4 (de) * | 2004-12-03 | 2009-11-05 | Aequos Endoprothetik Gmbh | Künstliches Gelenkelement sowie ein damit ausgestattetes Greifwerkzeug |
Also Published As
Publication number | Publication date |
---|---|
DE19650816B9 (de) | 2005-02-17 |
ATE201581T1 (de) | 2001-06-15 |
ES2159156T3 (es) | 2001-09-16 |
DE59703695D1 (de) | 2001-07-05 |
JP2001505789A (ja) | 2001-05-08 |
EP0939607A1 (de) | 1999-09-08 |
WO1998025551A1 (de) | 1998-06-18 |
DE19650816B4 (de) | 2004-11-11 |
EP0939607B1 (de) | 2001-05-30 |
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R081 | Change of applicant/patentee |
Owner name: ORTHODYNAMICS GMBH, DE Free format text: FORMER OWNER: ESKA IMPLANTS GMBH & CO.KG, 23556 LUEBECK, DE Effective date: 20110707 |
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