The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 08, 2000
Filed:
Mar. 16, 1998
Applicant:
Inventors:
Robert L Assell, Mendota Heights, MN (US);
Charles D Ray, Williamsburg, VA (US);
Assignee:
RayMedica, Inc., Bloomington, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61F / ;
U.S. Cl.
CPC ...
623 17 ;
Abstract
A capsule-shaped prosthetic spinal disc nucleus for implantation into a human intradiscal space, made of a substantially inelastic constraining jacket surrounding an amorphous polymer core. The constraining jacket has a generally fixed maximum volume and defines a height. The amorphous polymer core fills an initial volume of the constraining jacket and develops an internal pressure. In response to the internal pressure, the constraining jacket transitions toward the maximum volume, increasing substantially in height.
Published as:
CA2323922A1; WO9947082A1; AU3007699A; US6022376A; EP1063948A1; KR20010041891A; BR9908824A; AU742901B2; JP2002506678A; ZA200005580B; EP1063948A4; CA2323922C; JP2006116327A; KR100647762B1; EP1063948B1; ATE355802T1; DE69935425D1; ES2283108T3; DE69935425T2; JP2007289728A; JP4105721B2;