JP2746969B2 - 関節補綴 - Google Patents
関節補綴Info
- Publication number
- JP2746969B2 JP2746969B2 JP63508898A JP50889888A JP2746969B2 JP 2746969 B2 JP2746969 B2 JP 2746969B2 JP 63508898 A JP63508898 A JP 63508898A JP 50889888 A JP50889888 A JP 50889888A JP 2746969 B2 JP2746969 B2 JP 2746969B2
- Authority
- JP
- Japan
- Prior art keywords
- joint prosthesis
- pin
- screw
- joint
- pins
- 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.)
- Expired - Lifetime
Links
- 210000000988 bone and bone Anatomy 0.000 claims description 15
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 239000007943 implant Substances 0.000 claims 1
- 210000001145 finger joint Anatomy 0.000 description 6
- 239000013013 elastic material Substances 0.000 description 3
- 239000000560 biocompatible material Substances 0.000 description 2
- 208000015181 infectious disease Diseases 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 208000025747 Rheumatic disease Diseases 0.000 description 1
- 210000003423 ankle Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000001513 elbow Anatomy 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
- 230000000552 rheumatic effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 210000000707 wrist Anatomy 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/42—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
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
- A61F2002/3006—Properties of materials and coating materials
- A61F2002/30069—Properties of materials and coating materials elastomeric
-
- 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
- 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
- A61F2002/30143—Convex polygonal shapes hexagonal
-
- 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
- A61F2002/30159—Concave polygonal shapes
- A61F2002/30177—W-shaped, M-shaped or sigma 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
- 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
- A61F2002/30331—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
- A61F2002/30364—Rotation about the common longitudinal axis
- A61F2002/30367—Rotation about the common longitudinal axis with additional means for preventing said rotation
-
- 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
- A61F2002/30563—Special structural features of bone or joint prostheses not otherwise provided for having elastic means or damping means, different from springs, e.g. including an elastomeric core or shock absorbers
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/30721—Accessories
- A61F2/30734—Modular inserts, sleeves or augments, e.g. placed on proximal part of stem for fixation purposes or wedges for bridging a bone defect
- A61F2002/30738—Sleeves
-
- 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
- A61F2002/3085—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with a threaded, e.g. self-tapping, bone-engaging surface, e.g. external surface
-
- 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
- A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
-
- 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
- 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
- A61F2230/0004—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
- 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
-
- 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
- A61F2230/0028—Shapes in the form of latin or greek characters
- A61F2230/0056—W-shaped, e.g. M-shaped, sigma-shaped
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
- Materials For Medical Uses (AREA)
Description
【発明の詳細な説明】 本発明は関節補綴を設置する骨間に固定する2つの栓
の各々に挿入された2つのピン間の関節部から成る関節
補綴に関する。
の各々に挿入された2つのピン間の関節部から成る関節
補綴に関する。
この種の指関節補綴は米国特許4,352,212に開示され
ている。開示された態様において、関節部は相互に滑っ
て係合する2要素から成り、その1は関節球を形成し、
他の1は該関節球を介して関節式に連結される連結ピン
を形成している。該関節部の2要素上のピンは関節補綴
により相互連結される骨の管に導入されるプラスチック
栓に受けられている。
ている。開示された態様において、関節部は相互に滑っ
て係合する2要素から成り、その1は関節球を形成し、
他の1は該関節球を介して関節式に連結される連結ピン
を形成している。該関節部の2要素上のピンは関節補綴
により相互連結される骨の管に導入されるプラスチック
栓に受けられている。
他の従来関節補綴(米国特許3,875,594)は全体は弾
性材で構成され、関節補綴の一体部を形成するピンによ
り骨管内に固定される。かかる補綴はピンと骨との間に
存在する関節式連結部で磨耗し、その結果、弾性材微粒
子が人体器管に侵入して他の器官で感染、その他トラブ
ルの原因になる。
性材で構成され、関節補綴の一体部を形成するピンによ
り骨管内に固定される。かかる補綴はピンと骨との間に
存在する関節式連結部で磨耗し、その結果、弾性材微粒
子が人体器管に侵入して他の器官で感染、その他トラブ
ルの原因になる。
本発明の目的は上記と同種の関節を提供するものであ
り、米国特許4,352,212のものより相当に簡単な構造で
あり、相互を滑って係合する要素を含まず、かつ該特許
により提案された連結骨に連結できる利点および弾性関
節部により提供される利点を有する。特に、本発明の関
節補綴は構造上、簡単であり、耐久性があり、容易に関
節連結でき、磨耗がなく、安全、永久的、無害の骨連結
を達成する。また、本発明の関節補綴は簡単に交換がで
きる。
り、米国特許4,352,212のものより相当に簡単な構造で
あり、相互を滑って係合する要素を含まず、かつ該特許
により提案された連結骨に連結できる利点および弾性関
節部により提供される利点を有する。特に、本発明の関
節補綴は構造上、簡単であり、耐久性があり、容易に関
節連結でき、磨耗がなく、安全、永久的、無害の骨連結
を達成する。また、本発明の関節補綴は簡単に交換がで
きる。
上記目的は請求項1の特徴部に記載された関節補綴に
関する本発明により達成される。
関する本発明により達成される。
本発明の詳細および利点を添付図面を参照して以下に
説明する。
説明する。
第1図は本発明による指関節補綴の縦部分断面を含む
側面図であり、 第2図は第1図の指関節補綴の横部分断面を含む側面
図であり、 第3図は2骨間に手術により挿入される指関節部を示
す断面図であり、 第4図は1態様のピン取り付け板の端面図であり、 第5図は他の態様のピン取り付け板の端面図であり、
かつ 第6図は第1図と同様の弾性関節部の1態様図であ
る。
側面図であり、 第2図は第1図の指関節補綴の横部分断面を含む側面
図であり、 第3図は2骨間に手術により挿入される指関節部を示
す断面図であり、 第4図は1態様のピン取り付け板の端面図であり、 第5図は他の態様のピン取り付け板の端面図であり、
かつ 第6図は第1図と同様の弾性関節部の1態様図であ
る。
第1から5図において、図示された指関節補綴はシリ
コンゴムまたはポリウレタン等の弾性材による関節部10
を有する。この関節部は生物適合材料、好ましくはチタ
ン、で形成された2つのピン11に連結されている。ピン
11は該ピン上の端フランジ12のまわりに射出成形された
関節部を介して該関節部に固定されていて、該端フラン
ジが該弾性材中に完全に埋入されるようになっている。
該ピンを充分に連結するために該端フランジは第3図の
長孔13または第4図の孔14を形成して射出成形中に弾性
材がそれら開口部へ侵入できるようになっている。該関
節部は該端フランジのまわりに2つの板状矩形拡大部15
を形成するとともに該端フランジ間に相対的に薄く、僅
かに湾曲したウェブ16を形成している。
コンゴムまたはポリウレタン等の弾性材による関節部10
を有する。この関節部は生物適合材料、好ましくはチタ
ン、で形成された2つのピン11に連結されている。ピン
11は該ピン上の端フランジ12のまわりに射出成形された
関節部を介して該関節部に固定されていて、該端フラン
ジが該弾性材中に完全に埋入されるようになっている。
該ピンを充分に連結するために該端フランジは第3図の
長孔13または第4図の孔14を形成して射出成形中に弾性
材がそれら開口部へ侵入できるようになっている。該関
節部は該端フランジのまわりに2つの板状矩形拡大部15
を形成するとともに該端フランジ間に相対的に薄く、僅
かに湾曲したウェブ16を形成している。
各ピン11は管状ねじ17へ挿入され、該ねじは生物適合
材料で形成され、好ましくは該ピンと同一材料、チタン
等で形成されるのがよい。該ねじは端フランジ18を有
し、かつ該端フランジが骨に係合するまで第3図のごと
く骨管内へねじ込んで固定される。該ねじは骨に大きく
影響を与える、即ち、これは骨が不均一な荷量により劣
化せず、かつ有効寿命の長い若者が従来態様の補綴より
も長期間より良く機能する補綴を使用できるように該関
節補綴は長時間の大きな荷重に耐えることのできること
を意味する。ねじ内のボアは充分に長く、該ピンが完全
に該ボアに挿入されたときにその底部に接触しないよう
になっている。該関節補綴の取り付けは骨にねじ17を固
定した後該ねじにピン11を押し込む。この取り付け後、
該ねじ間に設けた弾性関節部10を介して該ピンを該ねじ
内に保持する。該ピンは取り付け後ねじ内に係止されて
よい。関節補綴を使用しているとき該ピンおよび該ねじ
間で移動は生じない。該関節補綴の磨耗最小限に維持さ
れる。つまり、寿命は長く人体組織へ侵入する粒子によ
る感染または刺激の危険は実際に完全に解消されること
を意味する。他の利点はピンに連結された関節部が、例
えば関節補綴がなんらかの理由で満足できる機能をしな
い場合には骨の中に残っているねじを用いて簡単な操作
で容易に交換できる点である。該ピンはねじ内で回転す
るように円筒状であってよく、この場合関節補綴は容易
に調整できるが、使用中に関節補綴が回転する危険もあ
る。仮に回転自在の態様の関節補綴が回転防止手段を有
する態様の関節補綴より安価であったとしても、ピンは
ボア内で回転できないようにボアに誘導されるのが好ま
しい。これはピン上またはボア内で該ピンまたはボアの
溝に転置自在に受けられる突起を設けるまたは該ピンま
たはボアを非丸形にすることにより可能になる。例え
ば、ピンまたはボアを6角形断面形状にすれば、ねじを
該ねじのボアに係合するピンスパナにより締め付けるこ
とができる。または、ねじ内にネジドライバ孔を設ける
か、またはねじを把持して締め付けることのできる6角
形フランジをねじ上に設ける必要がある。
材料で形成され、好ましくは該ピンと同一材料、チタン
等で形成されるのがよい。該ねじは端フランジ18を有
し、かつ該端フランジが骨に係合するまで第3図のごと
く骨管内へねじ込んで固定される。該ねじは骨に大きく
影響を与える、即ち、これは骨が不均一な荷量により劣
化せず、かつ有効寿命の長い若者が従来態様の補綴より
も長期間より良く機能する補綴を使用できるように該関
節補綴は長時間の大きな荷重に耐えることのできること
を意味する。ねじ内のボアは充分に長く、該ピンが完全
に該ボアに挿入されたときにその底部に接触しないよう
になっている。該関節補綴の取り付けは骨にねじ17を固
定した後該ねじにピン11を押し込む。この取り付け後、
該ねじ間に設けた弾性関節部10を介して該ピンを該ねじ
内に保持する。該ピンは取り付け後ねじ内に係止されて
よい。関節補綴を使用しているとき該ピンおよび該ねじ
間で移動は生じない。該関節補綴の磨耗最小限に維持さ
れる。つまり、寿命は長く人体組織へ侵入する粒子によ
る感染または刺激の危険は実際に完全に解消されること
を意味する。他の利点はピンに連結された関節部が、例
えば関節補綴がなんらかの理由で満足できる機能をしな
い場合には骨の中に残っているねじを用いて簡単な操作
で容易に交換できる点である。該ピンはねじ内で回転す
るように円筒状であってよく、この場合関節補綴は容易
に調整できるが、使用中に関節補綴が回転する危険もあ
る。仮に回転自在の態様の関節補綴が回転防止手段を有
する態様の関節補綴より安価であったとしても、ピンは
ボア内で回転できないようにボアに誘導されるのが好ま
しい。これはピン上またはボア内で該ピンまたはボアの
溝に転置自在に受けられる突起を設けるまたは該ピンま
たはボアを非丸形にすることにより可能になる。例え
ば、ピンまたはボアを6角形断面形状にすれば、ねじを
該ねじのボアに係合するピンスパナにより締め付けるこ
とができる。または、ねじ内にネジドライバ孔を設ける
か、またはねじを把持して締め付けることのできる6角
形フランジをねじ上に設ける必要がある。
弾性関節部10により、上記関節補綴はばね弾力を有す
る。これはリューマチ患者を治療する場合に重要であ
る。ばね弾性のない場合患者の指は曲折部位で硬直しや
すい。更に、弾性関節部はショクを吸収し、その結果と
して振動が減衰され、関節補綴およびその取り付け部材
の強度を増す。
る。これはリューマチ患者を治療する場合に重要であ
る。ばね弾性のない場合患者の指は曲折部位で硬直しや
すい。更に、弾性関節部はショクを吸収し、その結果と
して振動が減衰され、関節補綴およびその取り付け部材
の強度を増す。
関節部10は第6図のごとくウェブが薄く該ウェブの下
側をアーチ状に高くした形状であってもよい。この関節
部の方が上記第1態様のものより指関節を形成する自然
の指関節の骨のその部分の交換に適切であるが、組織が
上記下側のアーチ内へ成長し、該組織が該関節部の下に
挟まれて関節と低触すると同時に該ウェブの上側が大き
な緊張ストレスに曝される。しかし該ウェブは指関節補
綴を挿入する部位の条件に適した最良の方法で適用する
ために異なる形状にすることが可能である。
側をアーチ状に高くした形状であってもよい。この関節
部の方が上記第1態様のものより指関節を形成する自然
の指関節の骨のその部分の交換に適切であるが、組織が
上記下側のアーチ内へ成長し、該組織が該関節部の下に
挟まれて関節と低触すると同時に該ウェブの上側が大き
な緊張ストレスに曝される。しかし該ウェブは指関節補
綴を挿入する部位の条件に適した最良の方法で適用する
ために異なる形状にすることが可能である。
上記関節補綴は相互に滑らせて係合す要素を含む補綴
よりも安価かつ簡単な方法で製造できる。このことは該
補綴が高価な関節部よりも色々なタイプの患者に使用で
きることを意味する。
よりも安価かつ簡単な方法で製造できる。このことは該
補綴が高価な関節部よりも色々なタイプの患者に使用で
きることを意味する。
本発明は指関節補綴について説明されたが手関節、肘
関節、および足関節等の蝶番型の他の関節に適用でき
る。
関節、および足関節等の蝶番型の他の関節に適用でき
る。
───────────────────────────────────────────────────── フロントページの続き (72)発明者 ブローネマルク,ペル‐イングバル スウェーデン国,エス‐431 66 モェ ールンダル,オンデルガタン 3
Claims (8)
- 【請求項1】関節補綴を装着する骨間に固定されるべき
2つのピン(11)間の関節部(10)、および上記ピン
(11)間の関節部(10)を形成する弾性ウェブ(16)か
ら成り、上記ピン(11)が上記弾性ウェブへ埋め込まれ
て該ウェブ内に固定されている関節補綴において、上記
各ピン(11)は1端部に上記弾性ウェブ内に埋め込まれ
た横フランジ(12)を有し、かつ上記各ピン(11)には
骨内に固定できる管状ねじ(17)が設けられ、上記ピン
は上記ねじ内に挿入されていて、上記ピンと上記ねじは
生物適合材料から成ることを特徴とする関節補綴。 - 【請求項2】上記ウェブ(16)は湾曲している、請求項
1の関節補綴。 - 【請求項3】上記フランジ(12)は穿孔を有する、請求
項1または2の関節補綴。 - 【請求項4】上記関節部(10)は上記フランジのまわり
に射出成形されている、請求項1から3のいずれか1の
関節補綴。 - 【請求項5】上記ピン(11)は上記ねじ(17)内に回転
自在に設置されている、請求項1から4のいずれか1の
関節補綴。 - 【請求項6】上記ピン(11)は上記ねじ(17)内に回転
しない状態で導入されている、請求項1から4のいずれ
か1の関節補綴。 - 【請求項7】上記ピン(11)および上記ピンを受ける上
記ねじ(17)内のボアは非円形断面形状である、請求項
6の関節補綴。 - 【請求項8】上記ピン(11)および上記ねじ(17)はチ
タン製である、請求項1から7のいずれか1の関節補
綴。
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Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8704211-5 | 1987-10-29 | ||
SE8704211A SE466732B (sv) | 1987-10-29 | 1987-10-29 | Ledprotes, innefattande en ledkropp mellan ett par tappar foer infaestning i ben |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH03501810A JPH03501810A (ja) | 1991-04-25 |
JP2746969B2 true JP2746969B2 (ja) | 1998-05-06 |
Family
ID=20370047
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP63508898A Expired - Lifetime JP2746969B2 (ja) | 1987-10-29 | 1988-10-28 | 関節補綴 |
Country Status (6)
Country | Link |
---|---|
US (1) | US5011497A (ja) |
EP (1) | EP0391932B1 (ja) |
JP (1) | JP2746969B2 (ja) |
DE (1) | DE3874754T2 (ja) |
SE (1) | SE466732B (ja) |
WO (1) | WO1989003663A1 (ja) |
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JPH01136655A (ja) * | 1987-11-24 | 1989-05-29 | Asahi Optical Co Ltd | 人工椎間板 |
-
1987
- 1987-10-29 SE SE8704211A patent/SE466732B/sv not_active IP Right Cessation
-
1988
- 1988-10-28 JP JP63508898A patent/JP2746969B2/ja not_active Expired - Lifetime
- 1988-10-28 US US07/473,992 patent/US5011497A/en not_active Expired - Fee Related
- 1988-10-28 WO PCT/SE1988/000580 patent/WO1989003663A1/en active IP Right Grant
- 1988-10-28 DE DE8888909624T patent/DE3874754T2/de not_active Expired - Fee Related
- 1988-10-28 EP EP88909624A patent/EP0391932B1/en not_active Expired - Lifetime
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WO1989003663A1 (en) | 1989-05-05 |
DE3874754D1 (de) | 1992-10-22 |
SE8704211L (sv) | 1989-04-30 |
EP0391932B1 (en) | 1992-09-16 |
US5011497A (en) | 1991-04-30 |
JPH03501810A (ja) | 1991-04-25 |
SE466732B (sv) | 1992-03-30 |
EP0391932A1 (en) | 1990-10-17 |
SE8704211D0 (sv) | 1987-10-29 |
DE3874754T2 (de) | 1993-03-04 |
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