Non-compliant balloon with compliant top-layer to protect...

Details Non-compliant balloon with compliant top-layer to protect... Non-compliant balloon with compliant top-layer to protect...

2006-07-04

2006-07-04

Stewart, Alvin J. (Department: 3738)

Prosthesis (i.e., artificial body members), parts thereof, or ai

Arterial prosthesis

Stent combined with surgical delivery system

C606S192000

Reexamination Certificate

active

07070613

ABSTRACT:
In order to minimize the potential for damage to bio-compatible and/or therapeutic-containing stent coatings, there is provided a compliant elastic sheath over layer between a non-compliant stent expansion balloon and an unexpanded stent, which is secured over the balloon with a securing crimp. This stent deployment assembly, which is mounted on a catheter, is maneuvered through a patient's body to a desired deployment site and then inflated to expand the stent to the desired diameter. During expansion, the compliant elastic material between the stent and the non-compliant balloon prevents non-compliant balloon-induced damage to the stent's coating, as well as preventing degradation of the non-compliant balloon by, for example, stent-caused punctures. The deflated non-compliant stent expansion balloon and compliant elastic sheath are then withdrawn from the patient's body, leaving the deployed stent at the desired implantation site with its coating substantially intact.

REFERENCES:
patent: 4950227 (1990-08-01), Savin et al.
patent: 5116318 (1992-05-01), Hillstead
patent: 5409495 (1995-04-01), Osborn
patent: 5843089 (1998-12-01), Sahatjian et al.
patent: 6544222 (2003-04-01), Yang
patent: 6660034 (2003-12-01), Mandrusov et al.
patent: 6852116 (2005-02-01), Leonhardt et al.

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