Stent delivery catheter and method of use

a catheter and stent technology, applied in the field of angioplasty procedures, can solve the problems of endothelial cell formation, limiting the effect of stent delivery, and trapping enough emboli to adversely affect the flow of blood within the vessel

Inactive Publication Date: 2005-01-27
STACK RICHARD S +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most devices of this type are intended for permanent deployment within the patient's body, and thus pose the risk of trapping sufficient emboli to adversely affect the flow of blood within the vessel in which they are deployed.
Furthermore, any foreign object in the body tends to provoke a response from the immune system and over time can lead to endothelial cell formation.
This device, and others like it, are not adapted for permanent deployment within the body and can only be used for limited periods of time, limiting their efficacy.

Method used

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  • Stent delivery catheter and method of use
  • Stent delivery catheter and method of use
  • Stent delivery catheter and method of use

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Embodiment Construction

[0026] With reference to FIG. 1a, wherein a preferred embodiment of the catheter assembly and expandable sheath device of the present invention is depicted in its operating environment, expandable sheath 100 is comprised of a tubular wall 102 with a proximal end 104 and a distal end 106, and defining an inner lumen 108 extending therebetween. Sheath 100 as depicted in FIG. 1a is in its unexpanded configuration.

[0027] With continued reference to FIG. 1a, sheath 100 preferably is connected to a delivery / deployment device 120 that can introduce the sheath into a patient's body lumen 110 and advance it to the desired deployment site. Insertion device 120 is preferably an elongated tubular member such as catheter 130 depicted in FIG. 1a, with catheter wall 131 defining inner lumen 132 which extends from distal end 134 to a proximal end [not shown] that remains outside of the patient's body. Radiopaque marker 136 is disposed at distal end 134 to enable a physician to precisely position t...

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Abstract

A deformable sheath is attached to a catheter and introduced intravascularly to be expanded against an arterial wall and entrap plaque therebetween. A stent is subsequently deployed within the expanded sheath and the sheath is then withdrawn from within the vasculature to leave the stent expanded against the arterial wall with the plaque entrapped therebetween.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to angioplasty procedures, and more particularly to a device and method to prevent arterial plaque from being dislodged from the arterial wall in procedures such as, for example, percutaneous transluminal coronary angioplasty (PTCA) or percutaneous transluminal angioplasty (PTA), especially carotid PTA, and migrating into the patient's vasculature. [0003] In typical carotid PTA procedures, a guiding catheter or sheath is percutaneously introduced into the cardiovascular system of a patient through the femoral arteries and advanced through the vasculature until the distal end of the guiding catheter is in the common carotid artery. A guidewire and a dilatation catheter having a balloon on the distal end are introduced through the guiding catheter with the guidewire sliding within the dilatation catheter. The guidewire is first advanced out of the guiding catheter into the patient's carot...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61F2/06A61F2/84A61M25/12
CPCA61F2/95A61F2/966A61F2/958
Inventor STACK, RICHARD S.PATEL, UDAYAN G.BOYLE, WILLIAM J.STALKER, KENT C. B.MULLER, PAUL F.
Owner STACK RICHARD S
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