Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis – Bone
Patent
1991-12-03
1994-02-01
Isabella, David
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
Bone
606 60, 606 61, A61F 244, A61F 504
Patent
active
052828620
ABSTRACT:
A spinal implant that has a rod that connects and stabilizes the vertebrae of a vertebral column. The implant has screws that are attached to the vertebrae. Each screw has a clamp with a first bore that allows the clamp to be placed over the screw. The first bore of the clamp is larger than the major diameter of the screw, so that the clamp can float about the screws. The clamps each have a second bore perpendicular to the first bore, adapted to receive and hold the rod. Integrally formed with the second bore of each clamp are a pair of flanges. When the flanges are deflected inward, the clamp "grabs" the rod. The clamp is placed on a hexagonally shaped shoulder of the screw. A nut is fastened onto the opposite side of the clamp, such that the flanges are pressed between the shoulder and the nut. The diameter of the second bore and rod are approximately the same so that a small deflection of the flanges produces a large clamping force on the rod.
REFERENCES:
patent: 2774350 (1956-12-01), Cleveland, Jr.
patent: 3242922 (1966-03-01), Thomas
patent: 3987499 (1976-10-01), Scharbach et al.
patent: 4636217 (1987-01-01), Ogilvie et al.
patent: 4648388 (1987-03-01), Steffee
patent: 4655199 (1987-04-01), Steffee
patent: 4696290 (1987-09-01), Steffee
patent: 4719905 (1988-01-01), Steffee
patent: 4771767 (1988-09-01), Steffee
patent: 4820305 (1989-04-01), Harms et al.
patent: 4836196 (1989-06-01), Park et al.
patent: 4854304 (1989-08-01), Zielke
patent: 4854311 (1989-08-01), Steffee
patent: 4878915 (1989-11-01), Brantigan
patent: 4887595 (1989-12-01), Heinig et al.
patent: 4946458 (1990-08-01), Harms et al.
patent: 4987892 (1991-01-01), Krag et al.
patent: 5002542 (1991-03-01), Frigg
patent: 5005562 (1991-04-01), Cotrel
patent: 5011484 (1991-04-01), Breard
patent: 5015247 (1991-05-01), Michelson
patent: 5042982 (1991-08-01), Harms et al.
patent: 5047029 (1991-09-01), Aebi et al.
patent: 5084048 (1992-01-01), Jacob et al.
patent: 5084049 (1992-01-01), Asher et al.
patent: 5090854 (1992-02-01), Hafeli et al.
patent: 5092867 (1992-03-01), Harms et al.
Baker Gregg S.
Hafeli Paul B.
Artifex Ltd.
Brittingham Debra S.
Isabella David
LandOfFree
Spinal implant system and a method for installing the implant on does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Spinal implant system and a method for installing the implant on, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spinal implant system and a method for installing the implant on will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-576654