Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis
Reexamination Certificate
2006-11-01
2009-11-10
Tsang, Cecilia (Department: 1654)
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
C420S416000, C423S263000
Reexamination Certificate
active
07615075
ABSTRACT:
A plastic implant device for a mammal that contains a rare earth metal compound tracer and a method for detecting degradation such as wear of the implanted device are disclosed. The tracer can also be present with a separate antioxidant or the tracer compound can be can be the salt of a C6-C22unsaturated carboxylic acid. The rare earth metal compound tracer is released when the prosthetic is worn down or otherwise degraded in the mammalian body in which it was implanted. The presence and amount of released tracer present in a body fluid or tissue sample measured and is proportional to the degree of degradation of the implant.
REFERENCES:
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patent: 5858700 (1999-01-01), Ausich et al.
patent: 6169217 (2001-01-01), Cheryan
patent: 6784351 (2004-08-01), Hauptmann et al.
patent: 2003/0012325 (2003-01-01), Kernert et al.
patent: 2003/0208096 (2003-11-01), Tam et al.
RD 484072—Derwent abst, Aug. 2004, anonymous.
Kunze Achim
Wimmer Markus
Bradley Christina
Husch Blackwell Sanders Welsh & Katz
Rush University Medical Center
Shekleton Gerald T.
Tsang Cecilia
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