WO2001003613A1 - Prothese metatarsophalangienne - Google Patents

Prothese metatarsophalangienne Download PDF

Info

Publication number
WO2001003613A1
WO2001003613A1 PCT/GB2000/002715 GB0002715W WO0103613A1 WO 2001003613 A1 WO2001003613 A1 WO 2001003613A1 GB 0002715 W GB0002715 W GB 0002715W WO 0103613 A1 WO0103613 A1 WO 0103613A1
Authority
WO
WIPO (PCT)
Prior art keywords
component
face
relative
implant
curved surface
Prior art date
Application number
PCT/GB2000/002715
Other languages
English (en)
Inventor
Elmo Mohan Emmanuel
Original Assignee
Implants International Limited
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 Implants International Limited filed Critical Implants International Limited
Publication of WO2001003613A1 publication Critical patent/WO2001003613A1/fr

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
    • A61F2/4225—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for feet, e.g. toes
    • 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
    • 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
    • A61F2002/30138—Convex polygonal shapes
    • A61F2002/30153—Convex polygonal shapes rectangular
    • 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
    • A61F2002/30205—Three-dimensional shapes conical
    • A61F2002/3021—Three-dimensional shapes conical frustoconical
    • 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
    • A61F2002/30332—Conically- or frustoconically-shaped protrusion and recess
    • 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
    • A61F2002/30362—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 with possibility of relative movement between the protrusion and the recess
    • A61F2002/30364—Rotation about the common longitudinal axis
    • 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
    • A61F2002/30362—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 with possibility of relative movement between the protrusion and the recess
    • A61F2002/30369—Limited lateral translation of the protrusion within a larger recess
    • 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
    • A61F2002/30383—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by laterally inserting a protrusion, e.g. a rib into a complementarily-shaped groove
    • A61F2002/3039—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by laterally inserting a protrusion, e.g. a rib into a complementarily-shaped groove with possibility of relative movement of the rib within the groove
    • 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
    • A61F2002/30383—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by laterally inserting a protrusion, e.g. a rib into a complementarily-shaped groove
    • A61F2002/3039—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by laterally inserting a protrusion, e.g. a rib into a complementarily-shaped groove with possibility of relative movement of the rib within the groove
    • A61F2002/30398—Sliding
    • 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
    • A61F2002/30574—Special structural features of bone or joint prostheses not otherwise provided for with an integral complete or partial collar or flange
    • 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
    • A61F2002/30604—Special structural features of bone or joint prostheses not otherwise provided for modular
    • 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
    • A61F2002/30604—Special structural features of bone or joint prostheses not otherwise provided for modular
    • A61F2002/30606—Sets comprising both cemented and non-cemented endoprostheses
    • 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
    • A61F2002/30604—Special structural features of bone or joint prostheses not otherwise provided for modular
    • A61F2002/30616—Sets comprising a plurality of prosthetic parts of different sizes or orientations
    • 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
    • A61F2/4225—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for feet, e.g. toes
    • A61F2002/4233—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for feet, e.g. toes for metatarso-phalangeal joints, i.e. MTP 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
    • 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
    • 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
    • A61F2230/0017—Angular shapes
    • A61F2230/0019—Angular shapes rectangular
    • 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
    • A61F2230/0067—Three-dimensional shapes conical

Definitions

  • the present invention relates to an implant device.
  • Preferred embodiments relate to an anatomical first metatarsal Phalangeal total implant system which can be used as a press-fit system when the bone interface is coated with any of the recognised osseo-intergratable material such as plasma sprayed commercially pure titanium, vacuum fused CP titanium beads, Hydroxyapatite or other similar Bio-sympatic coatings.
  • the implants could also be used as a cemented system, when the bone interface is coated with titanium nitride using a physical vapour deposition (PVD) process.
  • PVD physical vapour deposition
  • an orthopaedic implant device for providing an orthopaedic joint, the device comprising a first component arranged to be secured relative to, preferably in, a proximal bone and a second component arranged to be secured relative to, preferably in, a distal bone, wherein the second component is arranged to rotate and be capable of translational movement relative to the first component.
  • Said first component suitably includes first securement means for securing it into a proximal bone.
  • Said first securement means is preferably an elongate member having a first elongate axis.
  • Said first member may be a stem.
  • Said first securement means preferably tapers inwardly on moving towards a free end thereof.
  • Said first component suitably includes a first cooperation means which may be a head part thereof for cooperation with the proximal bone within which it may be secured and/or for use in the provision of rotational and/or translational movement.
  • a first cooperation means which may be a head part thereof for cooperation with the proximal bone within which it may be secured and/or for use in the provision of rotational and/or translational movement.
  • Said first cooperation means preferably includes a curved, more preferably a part circularly cylindrical, surface for use in the provision of rotational and/or translational movement.
  • Said surface suitably curves through an angle of at least 30°, preferably at least 60°, more preferably at least 90°, especially at least 120°.
  • Said surface suitably curves through an angle of less than 210°, preferably less than 180°, more preferably less than 170°, especially less than 160°.
  • said first securement means is preferably fixed relative to said first cooperation means and is more preferably immovably fixed relative thereto.
  • Said first elongate axis preferably defines an angle of a least 3°, preferably at least 5°, more preferably at least 6°, especially about 7° to a radius of the curved, for example cylindrical, surface of said first component, when measured in the direction of the elongate extent of the curved, for example cylindrical, surface.
  • Said angle is suitably less than 20°, preferably less than 15°, more preferably less than 10°, especially less than 8°.
  • Said first securement means preferably extends from a rear face of said first cooperation means. More preferably, it extends from a main dorsal face of said first cooperation means which main dorsal face is a part, suitably a major part, of said rear face.
  • Said main dorsal face is preferably defined on a chord of the curved, for example circularly cylindrical, surface of the first cooperation means.
  • Said chord suitably subtends an angle of at least 40°, preferably at least 50°, more preferably at least 55° at the centre of the curved, for example circularly cylindrical, surface of the first cooperation means.
  • Said angle is suitably less than 100°, preferably less than 90°, more preferably less than 80°, especially less than 70°.
  • the elongate axis of the first securement means preferably extends substantially centrally from said main dorsal face.
  • Said rear face of said first cooperation means preferably includes an anterior dorsal face which suitably extends laterally to the main dorsal face, suitably so that it defines a smaller angle with the elongate axis than said chord defines with said elongate axis.
  • Said first component preferably includes a first guide element which is a component of a guide means for guiding movement, for example translational movement of the second component relative to the first component.
  • Said guide means is preferably arranged to guide relative sliding movement, suitably across the curved surface of the first component (preferably with substantially no component in the direction of the elongate axis of the curved surface).
  • Said first component may include a projecting or recessed member arranged to cooperate with the other one of a projecting or recessed member fixed relative to the second component.
  • said first component includes a projecting member for example a circumferentially extending rib.
  • Said second component (which may be a Phalangeal implant as hereinafter described) preferably includes second securement means, for example a male element for securement into a bone.
  • Said second securement means is preferably provided with a friction reducing surface.
  • Said male element preferably tapers outwardly towards an end of the second component which is nearest the first component in use.
  • Said second component preferably includes a head part which is suitably a flange, extending laterally to an elongate axis of the second securement means.
  • Said second component preferably includes an opening, for example a conical cavity, for receiving an intermediate means which is suitably arranged to connect the first and second components together.
  • a surface of the second component which faces, and preferably contacts, the intermediate means is preferably non-angular in front view.
  • Said surface preferably has an endless, curved, non-angular boundary wall and is, more preferably, ovaloid in shape.
  • the surface is preferably provided with a friction reducing surface.
  • Said intermediate means preferably includes a male element, for example a conical stem, for engagement in said opening, for example said conical cavity, of said second component.
  • Said male element and said opening are preferably arranged such that, when engaged, said second component can move laterally relative to an elongate axis of the male element of the intermediate means.
  • a face of said intermediate means which suitably has a friction reducing surface makes face-to-face contact with a face of said second component (which suitably also has a friction reducing surface).
  • Said respective faces which make face-to-face contact are preferably substantially planar.
  • Said intermediate means suitably includes a component of said guide means (when provided) (for example a projecting or recessed member) for guiding movement of the second component relative to the first component.
  • said intermediate means includes a recessed member.
  • Said intermediate means preferably makes face-to-face contact with said curved surface of said first component (when provided) and said intermediate means has a complex curved surface which is substantially complementary to that of said first component.
  • Said complex curved surface is preferably substantially convex in profile when viewed along said guide means associated with said intermediate means; and said curved surface is concave when viewed in a direction which is perpendicular to the extent of said guide means.
  • Said surface of said intermediate means which makes face-to face contact as aforesaid is preferably non-angular, but suitably include a continuously curved outer surface.
  • Said surface is preferably substantial ovaloid in front view.
  • Said orthopaedic implant device suitably includes five or less, preferably four or less, more preferably three or less elements. Preferably, said device includes only three elements.
  • an assembly of an orthopaedic implant device comprising a first component arranged to be secured relative to the proximal bone and a second component arranged to be secured in a distal bone, wherein the first and second components are operatively connected to one another so that the second component is rotatable and capable of translational movement relative to the first component.
  • a first component of an orthopaedic implant device per se.
  • a fourth aspect of the invention there is provided a second component of an orthopaedic implant device per se.
  • a collocation comprising one or a plurality of first components, one or a plurality of second components and, optionally, one or a plurality of intermediate means.
  • a method of providing an orthopaedic joint comprising securing a first component in a proximal bone and securing a second component in a distal bone, wherein the second component is arranged to rotate and be capable of translational movement relative to the first component.
  • Figures 1(a) to (d) are various three-dimensional views of the left small metatarsal implant.
  • Figures 2(a) to (d) are various three-dimensional views of the small sliding meniscus.
  • Figure 3 is a three-dimensional view of the small sliding meniscus of Figure 2 illustrating the geometry of the articular profile surface and the lateral stability track.
  • Figures 4(a) to (d) are various three-dimensional views of the small Phalangeal implant.
  • Figure 5 is a three-dimensional lateral (side) view of the total implant assembly using the components of figures 1 to 3.
  • Figure 6 is a three-dimensional lateral cross section of the complete assembly.
  • Figure 7 is a three-dimensional view of the metatarsal bone interface surfaces.
  • Figure 8 is a three-dimensional view of the Phalangeal bone interface surfaces.
  • Figure 9 is a two-dimensional lateral view of the assembly inset in first metatarsal joint (Figure 9(a)), illustrating the perceived re-section of the bone post re-section with implant in-situ ( Figure 9(b)).
  • Figures 10(a) to (c) are two-dimensional lateral views of the assembly inset in the first metatarsal joint illustrating the anatomical range of motion wherein Figure 10(a) illustrates dorsi-flexion, Figure 10(b) illustrates a neutral position and Figure 10(c) illustrates plan tar- flexion.
  • Figure 1 1 is a two-dimensional lateral view of the assembly illustrating the anatomical disposition of the assembly and showing a 7° anatomical bend.
  • preferred embodiments of the invention consist essentially of three elements:
  • This system may be used as a primary implant or as a revision system where a previous surgical procedure has failed.
  • These implants have been designed to provide a flexible, yet stable system, which will preserve as much original bone stock as possible and in particular but not limited to the sesamoids.
  • the design is also intended to facilitate but not limited to the preservation of essential soft tissue such as the Flexor Hallucis Brevis attachment which then will be used to assist in the balance of the eventual kinematics of the joint.
  • our system has been designed to assist in indications in which there is a painful loss of motion in the first metatarsal Phalangeal joint and where restoration of motion and weight bearing is considered desirable in cases such as rheumatoid arthritis, traumatic arthritis, osteoarthritis and cases of severe hallux rigidus e.g. but not limited to hallux abducto valgus.
  • Non-anatomical Phalangeal component in two sizes and small and medium.
  • Non-anatomical sliding meniscus with a complementary lateral stability track in two sizes and two thicknesses small and medium and 3mm and 4mm thickness.
  • Our system may either be used as a primary implant or as a revision system, where a previous surgical procedure has failed.
  • the metatarsal component has an articular surface with numeral 15 which is a defined concave cylindrical geometry and is equally bisected by the defined concave cylindrical geometry of the lateral stability rib 16.
  • the dorsal face 17 of this implant is angled at 60° to the centre line of the component so as to encourage Dorsiflexion.
  • the posterior profile 18 of this implant is designed so as to preserve the sesamoids 37 ( Figure 10).
  • the anterior aspect of this dorsal face 19 is angled at around 29° in order to provide anchorage and stability with the bone interface.
  • the anatomical tapered stem 20 enamates from the centre of the dorsal face 17 and is angled at 7° to the medial/lateral plane 21, which then determines the anatomical orientation of the implant.
  • the bone interface ( Figure 7) which is the entire surface of the implant in direct contact with the bone will be coated for either cemented or un-cemented use.
  • the articular feature of this implant described with the numeral 15 will be surface engineered and surface treated so as to minimise the friction coefficiency between this and its mating surface numeraled 22 and 23 in Figure 2.
  • the articular geometry of 15 has been designed to promote the desired Dorsiflexion and Plantarflexion.
  • the sliding meniscus component has been designed with a complementary defined convex cylindrical articular geometry which will interface with the articular face 15 of the metatarsal implant shown in Figure 1.
  • the articular face of the meniscus will also be designed with a complimentary defined convex cylindrical lateral stability groove 23, which will act together with the lateral stability rib 16 of Figure 1. Acting together they will provide a degree of stability and kinematic balance in the joint. Further this rib will be instrumental in transferring torsional loads between the metatarsal and the Phalanx by allowing the sliding meniscus to glide and rotate on faces marked 24 and 25.
  • the Phalangeal implant will have a tapered rectangular stem 30 to promote good fixation and resist residual torsional forces in the joint.
  • the stem 30 may be a tapered conical arrangement.
  • the surface of the tampered stem 30 and the dorsal part of the flange 31 both of which represent the bone interface element will be surface coated for use as either cemented or un-cemented prostheses.
  • the profile of this component has been designed so as to preserve as much bone stock as is possible.
  • the front face of the flange 128 together with the conical cavity 29 will be surface engineered and surface treated so as to minimise the friction between the mating faces of the sliding meniscus 24 and 25, ( Figure 2).
  • the spherical or ovaloid shape of the flange 33 has been designed to be low profile 32 and to stabilise the implant against the bone and to evenly transfer loads.
  • the ovaloid shape is designed to be bone preserving.
  • Anatomical First Metatarsal and Phalangeal joints as illustrated in Figure 5, means a primary or revision total implant system comprising three individual implants working in unison to provide a fundamental range of motion such as but not limited to Dorsiflexion plantarflexion and residual rotation.
  • the metatarsal implant is of an anatomic design and is offered in a range of four sizes in small, medium, large and x- large.
  • the anatomic design of this component is meant to mimic the natural anatomic disposition of this joint and therefore, provides a flexible, compliant, ergonomic platform from which the sliding meniscus and the Phalangeal implant will contribute to the natural kinematics of the reconstructed joint.
  • the design and attitude of the bone interface of the metatarsal implant is meant to be minimally bone sacrificing and could be implanted as either a press-fit or cemented device.
  • the second element in the system is referred to as the sliding meniscus, Figured 2 and 3, which is non-anatomical and is offered in a range of two sizes namely small and medium and in two thicknesses 28 to facilitate surgery and promote good kinematics and soft tissue balance.
  • the defined convex cylindrical articular surface of the sliding meniscus has been designed with a defined convex cylindrical complimentary wear track and lateral stabilising groove /track which acts in unison with the complimentary features of the metatarsal component.
  • the articular sliding and rotating surfaces of the sliding meniscus, Figure 2, parts 22, 23, 24 and 25 have been surface engineered to enhance the tribology of this wear couple.
  • this component has been designed to contribute to the preservation of good original bone stock.
  • the dorsal face 24 and conical stem of sliding meniscus 25 has been surface engineered to enhance tribology between this surface and the complimentary surfaces of the Phalangeal components.
  • the intersect point between the stem and the dorsal face of the flange 38 has been designed with a smaller radius so as not to interfere with the top profile radius of the Phalangeal cavity 39.
  • the wear couple surfaces of the sliding meniscus and the Phalangeal implant act together in a non- constrained environment and within the range of motion of the first metatarsal and Phalangeal joint. It is further perceived that this type of non-constrained wear couple has efficacy applications in other orthopaedic joints.
  • the third element in this system is referred to as the Phalangeal implant ( Figure 4).
  • the flange and ovaloid profile 32 and 33 of the Phalangeal implant has once again been designed to be bone preserving whilst yet providing a stable load bearing and transfer platform. A larger radius has been chosen for the profile between the cavity and the front face 39 so as not to contribute any shear forces.
  • the dorsal face 31 and tapered rectangular stem 30 have been designed to provide stable, secure fixation within the phalanx whilst resisting any natural torsion forces acting through the natural kinematics of the joint.
  • the bone interface surface of this implant ( Figure 8) is offered with two surface treatments for use as either cemented or as a non-cemented device.
  • the Phalangeal implant is non-anatomical and is offered in two sizes, small and medium and is meant to be of bone preserving designs. 4.
  • the implant may incorporate the engineered "void" Figure 6, component
  • the implant may incorporate the engineered "fit" Figure 6, component
  • the implant may incorporate the engineered "void" Figure 5, component 36 between the lateral stability rib located in the articular surface of the first metatarsal implant and its mating surface of the track of the sliding meniscus.
  • the implant may incorporate the special engineered surface on the entire surface of the sliding meniscus (Figure 3 component) which has been developed to enhance tribology in this wear couple.

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)

Abstract

L'invention concerne une prothèse destinée à constituer une articulation orthopédique. La prothèse est constituée d'un implant métatarsien (200) présentant une surface articulaire (15) et une nervure de stabilité latérale (16), d'un implant phalangien présentant une cavité conique et, entre les deux implants, d'un ménisque coulissant muni d'une rainure de stabilité latérale (23) coopérant avec la nervure (16) et avec une tige conique logée dans la cavité conique de l'implant phalangien (204). L'implant métatarsien est conçu de manière à se fixer dans un os proximal, et l'implant phalangien est conçu de manière à se fixer dans un os distal. L'élément phalangien ainsi obtenu est arrangé de façon à pouvoir effectuer une rotation et un mouvement de translation relativement à l'implant métatarsien grâce à sa coopération avec le ménisque coulissant.
PCT/GB2000/002715 1999-07-14 2000-07-14 Prothese metatarsophalangienne WO2001003613A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9916376.8 1999-07-14
GBGB9916376.8A GB9916376D0 (en) 1999-07-14 1999-07-14 Implant device

Publications (1)

Publication Number Publication Date
WO2001003613A1 true WO2001003613A1 (fr) 2001-01-18

Family

ID=10857143

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2000/002715 WO2001003613A1 (fr) 1999-07-14 2000-07-14 Prothese metatarsophalangienne

Country Status (2)

Country Link
GB (1) GB9916376D0 (fr)
WO (1) WO2001003613A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004026185A1 (fr) * 2002-09-19 2004-04-01 Malan De Villiers Implant arthroplastique
FR2858545A1 (fr) * 2003-08-06 2005-02-11 Depuy France Prothese totale metatarso-phalangienne, et ancillaires pour la mise en place de cette prothese.
DE102004043700A1 (de) * 2004-09-09 2006-03-16 Plus Endoprothetik Ag Endoprothese für ein Metatarsophalangealgelenk
US7291175B1 (en) 2005-01-06 2007-11-06 David J Gordon Metatarsal phalangeal implant with locking screw

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4242759A (en) * 1979-03-12 1981-01-06 Ontario Research Foundation M.C.P. Joint replacement
WO1991004718A1 (fr) * 1989-10-09 1991-04-18 Neoligaments Limited Articulation de doigt prothetique
FR2697155A1 (fr) * 1992-10-23 1994-04-29 Gaffuri Jean Gilles Prothèse totale métatarso-phalangienne de surfaçage.
US5387240A (en) * 1990-11-14 1995-02-07 Arch Development Corporation Floating bearing prosthetic knee
FR2724310A1 (fr) * 1994-09-09 1996-03-15 Medinov Sa Ensemble prothetique modulaire pour articulations d'os courts de la main ou du pied
FR2728783A1 (fr) * 1994-12-30 1996-07-05 Diebold Patrice Francois Prothese d'articulation metatarso-phalangienne totale du premier rayon du pied
FR2734150A1 (fr) * 1995-05-17 1996-11-22 Smith And Nephew Richards Fran Protheses articulaires interphalangiennes et metacarpo-phalangiennes
US5658342A (en) * 1992-11-16 1997-08-19 Arch Development Stabilized prosthetic knee
US5674297A (en) * 1995-12-08 1997-10-07 Lane; Lewis B. Metacarpophalangeal prosthesis

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4242759A (en) * 1979-03-12 1981-01-06 Ontario Research Foundation M.C.P. Joint replacement
WO1991004718A1 (fr) * 1989-10-09 1991-04-18 Neoligaments Limited Articulation de doigt prothetique
US5387240A (en) * 1990-11-14 1995-02-07 Arch Development Corporation Floating bearing prosthetic knee
FR2697155A1 (fr) * 1992-10-23 1994-04-29 Gaffuri Jean Gilles Prothèse totale métatarso-phalangienne de surfaçage.
US5658342A (en) * 1992-11-16 1997-08-19 Arch Development Stabilized prosthetic knee
FR2724310A1 (fr) * 1994-09-09 1996-03-15 Medinov Sa Ensemble prothetique modulaire pour articulations d'os courts de la main ou du pied
FR2728783A1 (fr) * 1994-12-30 1996-07-05 Diebold Patrice Francois Prothese d'articulation metatarso-phalangienne totale du premier rayon du pied
FR2734150A1 (fr) * 1995-05-17 1996-11-22 Smith And Nephew Richards Fran Protheses articulaires interphalangiennes et metacarpo-phalangiennes
US5674297A (en) * 1995-12-08 1997-10-07 Lane; Lewis B. Metacarpophalangeal prosthesis

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004026185A1 (fr) * 2002-09-19 2004-04-01 Malan De Villiers Implant arthroplastique
FR2858545A1 (fr) * 2003-08-06 2005-02-11 Depuy France Prothese totale metatarso-phalangienne, et ancillaires pour la mise en place de cette prothese.
EP1508316A1 (fr) * 2003-08-06 2005-02-23 Depuy France Prothèse totale métatarso-phalangienne, et ancillaires pour la mise en place de cette prothèse
AU2004201647B2 (en) * 2003-08-06 2010-08-19 Depuy (Ireland) Limited Total metatarso-phalangeal prosthesis, and ancillary devices for fitting this prosthesis
DE102004043700A1 (de) * 2004-09-09 2006-03-16 Plus Endoprothetik Ag Endoprothese für ein Metatarsophalangealgelenk
US7291175B1 (en) 2005-01-06 2007-11-06 David J Gordon Metatarsal phalangeal implant with locking screw

Also Published As

Publication number Publication date
GB9916376D0 (en) 1999-09-15

Similar Documents

Publication Publication Date Title
US11399950B2 (en) Implant for a bone joint
US20040186585A1 (en) Sphere-on-sphere ankle prosthesis
US7578850B2 (en) Unicondylar knee implant
EP0854695B1 (fr) Implant pour articulation carpometacarpienne du pouce
EP1203569B1 (fr) Prothèse d'articulation métacarpo-phalangienne
US8118876B2 (en) Prosthetic wrist implant
CA2839706C (fr) Implant prothetique et son procede d'implantation
US9358116B2 (en) Elbow replacement apparatus and methods
US20040167631A1 (en) Fixation surface for ankle prosthesis
US20080009950A1 (en) Prosthetic Knee
US20050004675A1 (en) Method and apparatus for wrist arthroplasty
JP2011514193A (ja) 関節人工器官
CA2173581A1 (fr) Prothese articulaire permettant la circumduction rotative
JP2008253771A (ja) 可動式支持アセンブリ
GB2223950A (en) Knee prosthesis
WO2001003613A1 (fr) Prothese metatarsophalangienne
O’Driscoll Design Considerations in Radial Head Arthroplasty
WO2004000175A1 (fr) Prothese unicompartimentale du genou
Stauffer Current status of total ankle replacement
AU2005325056A1 (en) Prosthetic knee

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
WWE Wipo information: entry into national phase

Ref document number: 2000946101

Country of ref document: EP

122 Ep: pct application non-entry in european phase
WWW Wipo information: withdrawn in national office

Ref document number: 2000946101

Country of ref document: EP

122 Ep: pct application non-entry in european phase