Stock material or miscellaneous articles – Structurally defined web or sheet – Continuous and nonuniform or irregular surface on layer or...
Reexamination Certificate
2005-06-28
2005-06-28
Ahmed, Shamim (Department: 1765)
Stock material or miscellaneous articles
Structurally defined web or sheet
Continuous and nonuniform or irregular surface on layer or...
C216S011000, C216S041000
Reexamination Certificate
active
06911249
ABSTRACT:
An attachment surface for an implantable device has an irregular pattern formed through a process including masking, chemical or electrochemical etching, blasting and debris removal steps. Surface material is removed from the implant surface without stress on the adjoining material and the process provides fully dimensional fillet radii at the base of the surface irregularities. This irregular surface is adapted to receive the ingrowth of bone material and to provide a strong anchor for that bone material which is resistant to cracking or breaking. The surface is prepared through an etching process which utilizes the random application of a maskant and subsequent etching in areas unprotected by the maskant. This chemical etching process is repeated a number of times as necessitated by the nature of the irregularities required in the surface. The blasting and debris removal steps produce microfeatures on the surface that enhance the ingrowth of bone material.
REFERENCES:
patent: 4818572 (1989-04-01), Shimamune et al.
patent: 5258098 (1993-11-01), Wagner et al.
patent: 5411629 (1995-05-01), Warfield
patent: 5507815 (1996-04-01), Wagner et al.
patent: 5639536 (1997-06-01), Yamazaki et al.
patent: 5705082 (1998-01-01), Hinson
patent: 5922029 (1999-07-01), Wagner et al.
patent: 6193762 (2001-02-01), Wagner et al.
patent: 0947 605 (1999-10-01), None
Bristol Rodney
Wagner Donald J.
Wagner, II Donald J.
Ahmed Shamim
Friedman Barry I.
MedSource Technologies Pittsburgh, Inc.
Metz Lewis LLC
LandOfFree
Surface for use on implantable device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Surface for use on implantable device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Surface for use on implantable device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3484025