EP0637232A1 - Composant de prothese du femur depourvu de ciment et son procede de production - Google Patents

Composant de prothese du femur depourvu de ciment et son procede de production

Info

Publication number
EP0637232A1
EP0637232A1 EP93909839A EP93909839A EP0637232A1 EP 0637232 A1 EP0637232 A1 EP 0637232A1 EP 93909839 A EP93909839 A EP 93909839A EP 93909839 A EP93909839 A EP 93909839A EP 0637232 A1 EP0637232 A1 EP 0637232A1
Authority
EP
European Patent Office
Prior art keywords
prosthesis
bone
section
cross
femoral
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.)
Withdrawn
Application number
EP93909839A
Other languages
German (de)
English (en)
Inventor
Klaus Dr.Med. Draenert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0637232A1 publication Critical patent/EP0637232A1/fr
Withdrawn legal-status Critical Current

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
    • A61F2/3094—Designing or manufacturing processes
    • A61F2/30942—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
    • 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
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/4097—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by using design data to control NC machines, e.g. CAD/CAM
    • G05B19/4099—Surface or curve machining, making 3D objects, e.g. desktop manufacturing
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
    • A61B34/10—Computer-aided planning, simulation or modelling of surgical operations
    • 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
    • A61F2002/3011—Cross-sections or two-dimensional shapes
    • A61F2002/30112—Rounded shapes, e.g. with rounded corners
    • A61F2002/30131—Rounded shapes, e.g. with rounded corners horseshoe- or crescent- or C-shaped or U-shaped
    • 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
    • A61F2/3094—Designing or manufacturing processes
    • A61F2/30942—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
    • A61F2002/30952—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques using CAD-CAM techniques or NC-techniques
    • 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
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0004—Rounded shapes, e.g. with rounded corners
    • A61F2230/0013—Horseshoe-shaped, e.g. crescent-shaped, C-shaped, U-shaped
    • 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
    • A61F2250/0018—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 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
    • 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
    • A61F2310/00017—Iron- or Fe-based alloys, e.g. stainless steel
    • 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
    • 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
    • A61F2310/00029—Cobalt-based alloys, e.g. Co-Cr alloys or Vitallium
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S623/00—Prosthesis, i.e. artificial body members, parts thereof, or aids and accessories therefor
    • Y10S623/901—Method of manufacturing prosthetic device
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S623/00—Prosthesis, i.e. artificial body members, parts thereof, or aids and accessories therefor
    • Y10S623/912—Method or apparatus for measuring or testing prosthetic
    • Y10S623/914—Bone

Definitions

  • the invention relates to a cemented-in-place female prosthesis component and a method for its manufacture.
  • the invention has for its object to provide a cementless anchored femoral prosthesis component that can be expected good long-term results during implantation.
  • each bone has an individual
  • the dimensions and / or stiffness of the femoral prosthesis component according to the invention can be adjusted to the individual properties of the bone.
  • the bending stiffness of the prosthesis is the decisive factor.
  • tensile stresses occur in the distal as well as in the proximal area, so that the tensile strength of the prosthesis also plays a role there.
  • Tensile strength is particularly important in the distal area. Because of the muscle attachments that leave the femoral neck and femoral neck free, torsional forces also occur.
  • the material properties discussed above are usually summarized in the present application as "rigidity".
  • the stiffness of the prosthesis and / or its mass is adapted to the individual properties of the bone.
  • the adaptation can be carried out in different ways, for example the material of the prosthesis can be selected according to the individual properties of the bone. In the case of a dense bone, a material with a higher specific mass and higher stiffness can be selected, whereas a material with a lower specific mass and stiffness is selected accordingly for a bone with low density.
  • CoCrMo alloys, Ti, Ti alloys, steel, plastic or composite materials for example, can be used as prosthesis material. It is also possible to make the material for the prosthetic component inhomogeneous, in the sense that a material with a higher specific mass and / or stiffness is used in areas with higher bone density than in areas with lower bone density.
  • the bone density can vary very greatly and in the cancellous area can only be 15 to 20% of the density of the compact bone.
  • the desired inhomogeneity of the material can be produced, for example, by varying the pore size when using a porous material and setting it smaller in the region of higher bone density.
  • Composite materials can also be used as material for the prosthesis component, the fiber content of the composite material, for example, being able to vary over the length of the prosthesis component. In this way, the rigidity of the prosthesis component in particular can be varied and adapted to the bone density.
  • the adaptation of the mass and / or stiffness of the prosthesis component to the individual properties of the bone can also be carried out by a suitable choice of the shape of the prosthesis component, in particular the cross section of the prosthesis component in different bone sections.
  • the cross section of the femoral prosthesis component is U-shaped or horseshoe-shaped at least over a substantial part of its length, as proposed in WO 90/02533, the.
  • Cross-sectional area and thus the prosthesis mass in different sectional planes can be adjusted by suitable choice of the size and depth of the channel or the slot between the two arms of the U-shaped cross section.
  • a transition from a full shaft to a U-shaped cross section with very thin arms is conceivable.
  • the prosthesis component forms a closed surface in the media, dorsomedial and anteromedial area.
  • Changes in mass and / or rigidity can also be achieved, for example, by making partially through bores, such as blind bores, or completely through bores in the prosthesis socket, in particular in order to reduce the mass and / or rigidity.
  • applied strips and / or reinforcements on the outer and / or inner contour of the prosthesis for example a U-shaped prosthesis socket, can increase the mass and / or the rigidity of the prosthesis component. This can be carried out either in sections or continuously over the entire length of the prosthesis component.
  • the adaptation of the mass and / or stiffness of the prosthesis component to the bone density is preferably carried out by providing a linear correlation between the bone density and the mass or stiffness of the prosthesis component, i.e. that, for example, when the bone density is doubled, the mass or stiffness of the prosthesis in the corresponding area of the. Prosthese component is strengthened as a percentage.
  • a patient with a deformed and arthrotically altered hip joint is examined in the computer tomograph, and stacked images of both hip joints are digitized and saved as cross-sectional images.
  • So-called binary images, ie black-and-white contrast images, which can be captured with their inner and outer contours and depict the femur, are generated from the cross-sectional images using image analysis methods.
  • the inner contour is put together in a 3-D model.
  • the center of rotation is determined from the hip joint and, with the help of the image analysis, as a The center point is shown together with the contour model (see figure).
  • the shape of the stem of the prosthetic component can then be adapted to the shape of the medullary cavity.
  • the surface density of the bone is determined on the binary image and compared to a corresponding section of a previously determined normal shape. From this comparison, a correlation factor results as a measure of the strength of the individual bone, on the basis of which the ratio of the prosthesis to the medullary cross-section is determined.
  • the contour model of the medullary cavity is eccentrically and / or concentrically reduced by 1 to 20%, preferably 5 to 10%, in order to determine the cross section of the prosthesis component in the relevant sectional plane. If the specific bone density is smaller than that of the normal bone, the contour model is correspondingly reduced in size in order to determine the cross section of the prosthesis.
  • the values can be interpolated between the individual cutting planes.
  • the data record of the contour model is passed on to a CAD unit together with the rotation center.
  • the axis of the contour model is determined in the CAD unit and undercuts in the design are corrected in such a way that the prosthetic component can be inserted into the medullary cavity in a straight line and / or with a slight screwing movement.
  • the construction obtained in this way is returned to the image analysis unit, where a double contour model with the outer and inner contour of the femur is generated, into which the prosthetic component can be fitted.
  • the prosthesis component is finally projected into the ap x-ray image (anterior-posterior beam path) and axial x-ray image and each inserted along its implantation axis.
  • the mass and / or stiffness of the pro- This is determined in proportion to the bone density.
  • the CAD data set is completed with the standard construction data of the neck cone for the ball head receptacle and for the implantation instruments (drive in / out of the prosthesis) and passed on to a milling unit.
  • the denture component is milled from a blank in the milling unit, for example in V 4 A steel. After the surface has been processed, the prosthesis component is washed and sterilized and is then ready for use.
  • FIG. 1 shows an embodiment of the prosthesis component according to the invention, cross-sections of the prosthesis and of the inner and outer contour model of the femur being shown in different sectional planes for a more detailed explanation.
  • the prosthesis is shown as a front view (in the implanted state).
  • the prosthesis shown schematically in the femur bone has an attachable spherical head 1, which is seated on the cone 2 of the prosthesis neck 3.
  • the rotation center is designated by the reference number 4.
  • the neck 3 is firmly connected to a shaft 5 of the prosthesis.
  • the optimal shaft cross sections 5 * resulting in the manner described above are shown.
  • eight shank cross sections 5 ' are shown hatched and, in addition, three shank cross sections are drawn out for clarification.
  • the bone density and the resulting optimum shaft cross section are preferably determined in six to ten, for example nine, sectional planes.
  • the outer contour model with reference number 6 and the inner contour model of the femur with reference number 7 are examples in the individual Section planes are shown, which each result from the image analysis.
  • the mass and / or rigidity of the prosthesis in the individual sectional planes can be adjusted by suitable design of the shaft cross sections 5 '. If, for example, a low mass is desired, the slot or the recess in the U-shaped cross section of the shaft is correspondingly enlarged, the largest possible surface being available for the force transmission between the prosthesis and bone in the medial region of the prosthesis.
  • the stiffness of the prosthesis component generally also changes in this area.
  • the reference number 8 designates the construction axis of the prosthesis, which at the same time also represents the medullary cavity axis and the implantation axis.

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Manufacturing & Machinery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Transplantation (AREA)
  • Physics & Mathematics (AREA)
  • Cardiology (AREA)
  • Geometry (AREA)
  • Human Computer Interaction (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Prostheses (AREA)

Abstract

L'invention concerne un composant de prothèse de fémur à ancrer sans ciment et son procédé de production. Le composant de prothèse produit par un procédé de conception assistée par ordinateur et d'analyse des images offre la plus grande surface possible de transmission de forces, sa masse et sa rigidité pouvant être adaptées aux caractéristiques individuelles de l'os.
EP93909839A 1992-04-24 1993-04-26 Composant de prothese du femur depourvu de ciment et son procede de production Withdrawn EP0637232A1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE4213598 1992-04-24
DE4213597A DE4213597A1 (de) 1992-04-24 1992-04-24 Mit Knochenzement zu verankernde Femurprothesenkomponente und Verfahren zu ihrer Herstellung
DE4213599A DE4213599A1 (de) 1992-04-24 1992-04-24 Prothesenkomponente und Verfahren zu ihrer Herstellung
DE4213598A DE4213598A1 (de) 1992-04-24 1992-04-24 Zementfreie Femurprothesenkomponente und Verfahren zu ihrer Herstellung
PCT/EP1993/001003 WO1993021864A1 (fr) 1992-04-24 1993-04-26 Composant de prothese du femur depourvu de ciment et son procede de production

Publications (1)

Publication Number Publication Date
EP0637232A1 true EP0637232A1 (fr) 1995-02-08

Family

ID=27203664

Family Applications (3)

Application Number Title Priority Date Filing Date
EP93909838A Withdrawn EP0637231A1 (fr) 1992-04-24 1993-04-26 Composants de prothese et leur procede de fabrication
EP93909839A Withdrawn EP0637232A1 (fr) 1992-04-24 1993-04-26 Composant de prothese du femur depourvu de ciment et son procede de production
EP93909837A Withdrawn EP0637230A1 (fr) 1992-04-24 1993-04-26 Composants de protheses femorales a ancrer avec du ciment osseux et leur procede de fabrication

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP93909838A Withdrawn EP0637231A1 (fr) 1992-04-24 1993-04-26 Composants de prothese et leur procede de fabrication

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP93909837A Withdrawn EP0637230A1 (fr) 1992-04-24 1993-04-26 Composants de protheses femorales a ancrer avec du ciment osseux et leur procede de fabrication

Country Status (5)

Country Link
US (1) US5554190A (fr)
EP (3) EP0637231A1 (fr)
JP (3) JPH07508189A (fr)
DE (3) DE4213599A1 (fr)
WO (3) WO1993021862A1 (fr)

Families Citing this family (135)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4304570A1 (de) * 1993-02-16 1994-08-18 Mdc Med Diagnostic Computing Vorrichtung und Verfahren zur Vorbereitung und Unterstützung chirurgischer Eingriffe
WO1995007509A1 (fr) * 1993-09-10 1995-03-16 The University Of Queensland Procede de modelisation anatomique stereolithographique
DE4406230C1 (de) * 1994-02-25 1995-08-31 Fehling Medical Ag Hüfttotalendoprothese
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DE4213599A1 (de) 1993-10-28
JPH07508191A (ja) 1995-09-14
JPH07508189A (ja) 1995-09-14
WO1993021863A1 (fr) 1993-11-11
EP0637231A1 (fr) 1995-02-08
EP0637230A1 (fr) 1995-02-08
WO1993021862A1 (fr) 1993-11-11
US5554190A (en) 1996-09-10
WO1993021864A1 (fr) 1993-11-11
DE4213597A1 (de) 1993-10-28
JPH07508190A (ja) 1995-09-14
DE4213598A1 (de) 1993-10-28

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