Selectively expandable, retractable and removable stent

Details Selectively expandable, retractable and removable stent Selectively expandable, retractable and removable stent

1993-07-13

1995-05-02

Shay, Randy C.

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

Arterial prosthesis

Stent structure

623 11, 623 12, 606194, 606195, A61F 206

Patent

active

054115493

ABSTRACT:
An improved stent apparatus for intraluminal use in the body of an animal. The apparatus is of resilient material disposed in a tubular configuration about a central axis, which carries ratchet apparatus in the form of catch and latch apparatus having a selectively removable latch. The stent is expanded through the use of an angioplasty balloon to any selected one of a plurality of dilated positions. As the stent expands, the catches come into contact with the latch to prevent retraction of the stent apparatus. The latch communicates with a point external to the lumen, and is selectively removable from contact with the catches to enable the stent apparatus to return to its original diameter.

REFERENCES:
patent: Re34327 (1993-07-01), Kreamer
patent: 4183102 (1980-01-01), Guiset
patent: 4693249 (1987-09-01), Schenck et al.
patent: 4733665 (1988-03-01), Palmaz
patent: 4740207 (1988-04-01), Kreamer
patent: 4877030 (1989-10-01), Beck et al.
patent: 5007926 (1991-04-01), Derbyshire
patent: 5266073 (1993-11-01), Wall

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