Rolling socks
AssigneeSciMed Life Systems, Inc.
InventorScott M. Hanson
Life of this patent
Estimating the term…
Abstract
A rolling retractable stent retaining sleeve for retaining a stent on a balloon catheter comprising a tubular sleeve. The tubular sleeve having a double walled construction which comprises an first layer and an second layer. A first portion of the first layer is constructed and arranged to engage at least a portion of a catheter. A second portion of the first layer is constructed and arranged to overlie an end of a stent prior to delivery of the stent. The first layer is everted such that it folds back upon itself to form the second layer. The double walled sleeve constructed and arranged to roll off of the stent during stent delivery.
Claims40
A stent delivery system comprising:
- a stent delivery catheter, the stent delivery catheter having a stent retaining region;
- a stent disposed about at least a portion of the stent retaining region, the stent having an unexpanded state and being expandable to an expanded state;
- at least one stent retaining sleeve, the at least one sleeve having a tubular double walled construction comprising a first layer and a second layer, a lubricant between the first layer and the second layer, a first portion of the first layer engaging at least a portion of the stent delivery catheter, a second portion of the first layer overlying an end of the stent when the stent is in the unexpanded state, the at least one stent retaining sleeve constructed and arranged to rollingly retract off of the stent when the stent is expanded to the expanded state, whereby during expansion of the stent the at least one sleeve retracts off of the stent.
A rolling retractable stent retaining sleeve for retaining a stent on a balloon catheter comprising:
- a tubular double walled sleeve, the tubular double walled sleeve comprising a first layer and a second layer, a lubricant between the first layer of material and the second layer of material, a first portion of the first layer constructed and arranged to engage at least a portion of the balloon catheter, a second portion of the first layer constructed and arranged to overlay an end of the stent prior to stent delivery, the tubular double walled sleeve constructed and arranged to rollingly retract off of the stent when the stent exerts an outwardly acting radial pressure on the first portion, whereby during stent delivery the tubular double walled sleeve is fully retracted off of the stent.
A method of delivering a stent comprising the steps of:
- providing a stent delivery catheter wherein the stent delivery catheter includes characterized as having:
- an inflatable region,
- an expandable stent disposed about the inflatable region, the stent having an unexpanded state and an expanded state,
- and at least one tubular double walled sleeve, the at least one tubular double walled sleeve comprising a first layer and a second layer, a lubricant between the first layer of material and the second layer of material, a first portion of the first layer constructed and arranged to engage at least a portion of the catheter, a second portion of the first layer constructed and arranged to overlay an end of the stent prior to stent delivery, the at least one tubular double walled sleeve constructed and arranged to rollingly retract off of the stent when the stent is expanded to the expanded state, whereby during stent delivery the at least one tubular double walled sleeve is fully retracted off of the stent;
- inserting the stent delivery catheter into a body vessel;
- advancing the balloon catheter to a predetermined delivery location;
- inflating the inflatable portion thereby expanding the stent from the unexpanded state to the expanded state and
- rollingly retracting the at least one sleeve off of the at least a portion of the stent thereby exposing the stent for delivery;
- and
- retracting the stent delivery catheter from the body vessel.
Dependencies are inferred from the claim text.