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US 5,817,101 AGranted
Fluid actuated stent delivery system
AssigneeSchneider (USA) Inc.
InventorGary R. Fiedler
Life of this patent
Estimating the term…
Abstract
A delivery system for procuring implantation of an expandable stent into a bodily lumen of interest is disclosed including a fluid-operated moving cylinder sleeve for retaining the stent in place during delivery. The sleeve to release a stent at the implantation site. A fluid driven bellows may be employed to retract the sleeve.
Claims11
A delivery system for implanting an expandable stent in a bodily lumen of interest comprising:
- (a) an elongate flexible catheter having distal and proximal ends;
- (b) at least one moveable fluid-operated, generally cylindrical tubular sleeve for placement over and retention of a stent in a delivery configuration prior to release, said sleeve being axially adjustable relative to said catheter and said stent, and having a closed end and an open end for release of a contained stent;
- (c) an expandable stent having a proximal and distal end and being collapsible about said catheter to a delivery configuration of reduced diameter along the length thereof;
- (d) a fluid driven hollow bellows mechanism for axially moving said sleeve comprising a bellows having a fixed seal and a moveable seal, said moveable seal being axially moveable by the extension of said bellows with the movement of said sleeve;
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- (e) a fluid supply system for supplying fluid to extend said bellows mechanism to operate said sleeve.
3 more elements
A method of deploying an expandable stent in a body lumen of interest for procuring implantation of the stent comprising the steps of:
- (a) Providing a delivery system for implanting an expandable stent in a body lumen of interest comprising:
- (1) an elongate flexible catheter having distal and proximal ends;
- (2) at least one moveable fluid-operated, generally cylindrical tubular sleeve for placement over and retention of a stent in a delivery configuration prior to release, said sleeve being axially adjustable relative to said catheter and said stent;
- (3) an expandable stent having a proximal and distal end and being collapsible about said catheter to a delivery configuration of reduced diameter along the length thereof;
- (4) a fluid driven bellows mechanism for axially moving said sleeve comprising a bellows having a fixed seal and a moveable seal, said moveable seal being axially moveable by said bellows with the movement of said sleeve;
- and
- (5) a fluid supply system for supplying fluid to said bellows mechanism to operate said sleeve;
- (b) intraluminally navigating said catheter to place said stent at a deployment site of interest;
- and
- (c) infusing fluid into said bellows mechanism in said sleeve to retract said sleeve axially in a direction to release said stent in situ.
7 more elements
Dependencies are inferred from the claim text.