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1. WO2005037147 - HIGH FLEXION ARTICULAR INSERT

Publication Number WO/2005/037147
Publication Date 28.04.2005
International Application No. PCT/US2004/033721
International Filing Date 13.10.2004
Chapter 2 Demand Filed 02.05.2005
IPC
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
F
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
2
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
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
F
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
2
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
02
Prostheses implantable into the body
30
Joints
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
F
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
2
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
02
Prostheses implantable into the body
30
Joints
38
for elbows or knees
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
F
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
2
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
02
Prostheses implantable into the body
30
Joints
46
Special tools for implanting artificial joints
A61F 2/00 (2006.01)
A61F 2/30 (2006.01)
A61F 2/38 (2006.01)
A61F 2/46 (2006.01)
CPC
A61F 2/30942
A61F 2/3886
A61F 2002/30133
A61F 2002/30387
A61F 2002/30604
A61F 2002/30616
Applicants
  • SMITH & NEPHEW, INC. [US/US]; 1450 BrooKs Road Memphis, TN 38116, US (AllExceptUS)
  • CARSON, Christopher, P. [US/US]; US (UsOnly)
Inventors
  • CARSON, Christopher, P.; US
Agents
  • PRATT, John, S., Esq.; Kilpatrick Stockton LLP Suite 2800 1100 Peachtree Street Atlanta, GA 30309-4530, US
Priority Data
60/512,45717.10.2003US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) HIGH FLEXION ARTICULAR INSERT
(FR) IMPLANT ARTICULAIRE A FLEXION ELEVEE
Abstract
(EN)
A knee prosthesis (100) is provided that allows for increased flexion. The knee prosthesis includes (a) a femoral component (200) adapted to fit on a distal end of the femur which includes a lateral condylar structure and a medial condylar structure (202) and (b) an intermediate structure (400) configured to cooperate with a femoral component of a knee prosthesis. The intermediate structure includes at least one surface (402) for contacting the femoral component and a transition (432, 436) of a sagittal curvature of the at least one contact surface from a concave surface into a convex surface at the contact interface of the femoral component and the intermediate structure when the knee is flexed at approximately 120° to 140°. The knee prosthesis minimizes impingement on the femoral posterior cortex in deep flexion, increases the dislocation safety factor and allows for easier reengagement of the articular surface should the femoral component externally rotate off of the tibial plateau.
(FR)
L'invention concerne une prothèse (100) du genou autorisant une flexion accrue. Cette prothèse de genou comprend (a) un composant fémoral (200) conçu pour venir s'adapter sur l'extrémité distale du fémur, et comprend une structure condylienne latérale et une structure (202) condylienne médiale, et (b) une structure intermédiaire (400) conçue pour coopérer avec un composant fémoral de la prothèse. La structure intermédiaire comprend au moins une surface (402) entrant en contact avec le composant fémoral, et une transition (432, 436) de la courbure sagittale de la/des surfaces de contact, reliant une surface concave à une surface convexe au niveau de l'interface de contact entre le composant fémoral et la structure intermédiaire lorsque le genou est fléchi à un angle approximatif de 120° à 140°. Cette prothèse de genou permet de réduire l'impact sur le cortex fémoral postérieur lors d'une flexion prononcée, d'augmenter le facteur de sécurité concernant les dislocations, et autorise une réinsertion plus aisée de la surface articulaire si le composant fémoral devait sortir plateau tibial par rotation externe.
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