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US 7,001,419 B2Granted
Stent delivery system with membrane
AssigneeBoston Scientific Scimed, Inc.
InventorsFernando DiCaprio, Jan Seppala, Raed Rizq
Life of this patent
Estimating the term…
Abstract
A stent delivery system comprising a catheter. The catheter having a catheter shaft, and a balloon mounted thereto. A stent is disposed about at least a portion of the balloon. The stent having an unexpanded state and an expanded state. The stent being retained on the balloon in the unexpanded state by at least one sleeve. The at least one sleeve having a first portion engaged to the catheter and a second portion at least partially overlaying an end of the stent when the stent is in the unexpanded state. At least one membrane is disposed about a portion of the stent. The at least one membrane constructed and arranged to prevent portions of the stent thereunder from flaring out during advancement of the catheter.
Claims15
A stent delivery system comprising:
- a catheter, the catheter having a catheter shaft, the catheter shaft having a balloon mounted thereto;
- a stent, the stent disposed about at least a portion of the balloon, the stent having an unexpanded state and an expanded state;
- at least one sleeve, the at least one sleeve having a first portion and a second portion, the first portion being engaged to at least a portion of the catheter shaft adjacent to the stent, the second portion at least partially overlaying an end of the stent when the stent is in the unexpanded state;
- at least one membrane, at least a portion of the membrane disposed beneath at least a portion of the at least one sleeve, the at least one membrane disposed about at least a portion of the stent, the at least one membrane constructed and arranged to prevent the at least a portion of the stent from flaring outward during advancement of the catheter through a vessel.
1 more element
A stent delivery system comprising:
- a catheter, the catheter having a catheter shaft, the catheter shaft having a balloon mounted thereto;
- a stent, the stent disposed about at least a portion of the balloon, the stent having an unexpanded state and an expanded state;
- at least one sleeve, the at least one sleeve having a first portion and a second portion, the first portion being engaged to at least a portion of the catheter shaft adjacent to the stent, the second portion at least partially overlaying an end of the stent when the stent is in the unexpanded state;
- at least one membrane, the at least one membrane disposed about at least a portion of the stent, the at least one membrane constructed and arranged to prevent the at least a portion of the stent from flaring outward during advancement of the catheter through a vessel;
- wherein the at least one membrane is a thermoplastic elastomer.
2 more elements
A stent delivery system comprising:
- a catheter, the catheter having a catheter shaft, the catheter shaft having a balloon mounted thereto;
- a stent, the stent disposed about at least a portion of the balloon, the stent having an unexpanded state and an expanded state;
- at least one sleeve, the at least one sleeve having a first portion and a second portion, the first portion being engaged to at least a portion of the catheter shafi adjacent to the stent, the second portion at least partially overlaying an end of the stent when the stent is in the unexpanded state;
- at least one membrane, the at least one membrane disposed about at least a portion of the stent, the at least one membrane constructed and arranged to prevent the at least a portion of the stent from flaring outward during advancement of the catheter through a vessel;
- wherein the at least one membrane is manufactured from at least one material selected from the group consisting of KRATON, polystyrene, polyurethanes and any combinations thereof.
2 more elements
A stent delivery system comprising:
- a catheter, the catheter having a catheter shall, the catheter shall having a balloon mounted thereto;
- a stent, the stent disposed about at least a portion of the balloon, the stent having an unexpanded state and an expanded state;
- at least one sleeve, the at least one sleeve having a first portion and a second portion, the first portion being engaged to at least a portion of the catheter shaft adjacent to the stent, the second portion at least partially overlaying an end of the stent when the stent is in the unexpanded state;
- at least one membrane, the at least one membrane disposed about at least a portion of the stent, the at least one membrane constructed and arranged to prevent the at least a portion of the stent from flaring outward during advancement of the catheter through a vessel;
- wherein the at least one membrane is a drug delivery device.
2 more elements
A stent delivery system comprising:
- a catheter, the catheter having a catheter shaft, the catheter shaft having a balloon mounted thereto;
- a stent, the stent disposed about at least a portion of the balloon, the stent having an unexpanded state and an expanded state;
- at least one sleeve, the at least one sleeve having a first portion and a second portion, the first portion being engaged to at least a portion of the catheter shaft adjacent to the stent, the second portion at least partially overlaying an end of the stent when the stent is in the unexpanded state;
- at least one membrane, the at least one membrane disposed about at least a portion of the stent, the at least one membrane constructed and arranged to prevent the at least a portion of the stent from flaring outward during advancement of the catheter through a vessel;
- wherein the at least one membrane has a predetermined membrane thickness and the at least one sleeve has a predetermined sleeve thickness, the predetermined membrane thickness being less than or equal to the predetermined sleeve thickness;
- wherein the predetermined membrane thickness is less than 0.005 inches thick.
3 more elements
A stent delivery system comprising:
- a catheter, the catheter having a catheter shaft, the catheter shaft having a balloon mounted thereto;
- a stent, the stent disposed about at least a portion of the balloon, the stent having an unexpanded state and an expanded state;
- at least one sleeve, the at least one sleeve having a first portion and a second portion, the first portion being engaged to at least a portion of the catheter shaft adjacent to the stent, the second portion at least partially overlaying an end of the stent when the stent is in the unexpanded state;
- at least one membrane, at least a portion of the membrane disposed beneath at least a portion of the at least one sleeve, the at least one membrane disposed about at least a portion of the stent, the at least one membrane constructed and arranged to prevent the at least a portion of the stent from flaring outward during advancement of the catheter through a vessel;
- wherein the at least one sleeve further comprises a first sleeve and a second sleeve, the stent further comprising a first end and a second end, the second portion of the first sleeve at least partially overlapping the first end of the stent, and the second portion of the second sleeve at least partially overlapping the second end of the stent;
- and
- wherein the at least one membrane is a plurality of membranes spaced apart axially along the stent.
4 more elements
Dependencies are inferred from the claim text.