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US 6,517,569 B2Granted
Insertion device for stents and methods for use
AssigneeEndocare, Inc.
InventorsPaul W. Mikus, Jay J. Eum, Dennis Bui, Gregory Kelly
Life of this patent
Estimating the term…
Abstract
Two embodiments for a stent delivery catheter are disclosed. In the first embodiment, the stent delivery catheter comprises an outer sheath, a peel-away sheath, and an inner sheath. In the second embodiment, the stent delivery catheter comprises an outer sheath and an inner tubular member which distally ends in a tongue having an arcuate cross section.
Claims7
A stent delivery catheter, comprising:
- an outer sheath having a distal and proximal end and a lumen therethrough;
- a peel-away sheath having a distal and proximal end and a lumen therethrough, said peel-away sheath slidably disposed within the lumen of said outer sheath, said peel-away sheath possessing at least one slit extending longitudinally from the distal end of said peel-away sheath and ending substantially at the proximal end of said peel-away sheath;
- and
- an inner sheath having a distal and proximal end and a lumen therethrough, said inner sheath slidably disposed within the lumen of said peel-away sheath, said inner sheath having a distal portion proximally extending from the distal end of said inner sheath to a proximal end of said distal portion, said distal portion adapted to receive at least a portion of a stent.
1 more element
A method of placing a stent within a prostatic urethra, said method comprising:
- providing a stent delivery catheter comprising:
- an outer sheath having a distal and a proximal end and a lumen therethrough;
- a peel-away sheath having a distal and a proximal end and a lumen therethrough, said peel-away sheath slidably disposed within the lumen of said outer sheath;
- said peel-away sheath possessing at least one slit extending longitudinally from the distal end of said peel-away sheath and ending substantially at the proximal end of said peel-away sheath;
- an inner sheath having a distal and proximal end and a lumen therethrough, said inner sheath slidably disposed within the lumen of said peel-away sheath, said inner sheath having a distal portion proximally extending from the distal end of said inner sheath to a proximal end of said distal portion, said distal portion adapted to receive at least a portion of a stent;
- a stent having a distal end and a proximal portion received by said distal portion of said inner sheath, said stent enclosed within the lumen of said peel-away sheath whereby the distal end of said stent is substantially aligned with the distal end of said peel-away sheath and with the distal end of said outer sheath, wherein said peel-away sheath has a proximal extension proximally extending from the proximal end of said outer sheath, and wherein said inner sheath has a proximal extension proximally extending from the proximal end of said peel-away sheath;
- inserting the catheter through the urethra into the prostatic urethra;
- proximally displacing the outer sheath with respect to said peel-away sheath along the proximal extension of the peel-away sheath whereby a distal portion of the outer sheath is exposed within the prostatic urethra;
- distally displacing the inner sheath with respect to the peel-away sheath along the proximal extension of the inner sheath whereby a distal portion of the stent is deployed within the prostatic urethra and resists further displacement;
- and
- proximally retracting the inner sheath and the peel-away sheath from the stent whereby the stent is fully deployed within the prostatic urethra.
8 more elements
Dependencies are inferred from the claim text.