Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis – Bone
Patent
1997-07-29
1999-04-27
Shay, Randy C.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
Bone
606 61, 606 73, 470198, 408207, 408220, A61C 244
Patent
active
058975934
ABSTRACT:
A lordotic implant has a frusto-conical shape with external threads. Prior to placement of the implant, vertebrae are distracted in a manner to provide a desired lordosis between the vertebrae. The pre-distracted vertebrae are then tapped to provide a tapped bore having a geometry matching the conical geometry of the implant. The threaded implant is then placed within the pre-tapped conical bore.
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Publication entitled "Ray Cervical Threaded Fusion Cage" of Surgical Dynamics, Concord, California, dated 1994.
Publication entitled "Varlock" of Biomat, dated Nov. 1994.
Bernardt, Normal Spinal Anatomy: Normal Sagittal Plan Alignment, Textbook of Spinal Surgery, Second Edition, Chapter 16 (pp. 185-191), Bridwell et al. editors, Lippincott-Raven Publishers, 1997.
Kohrs Douglas W.
Sand Paul M.
Shay Randy C.
Sulzer Spine-Tech Inc.
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