Balloon catheter with non-deployable stent
DC CAFCFirst Claim
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1. An angioplasty balloon catheter comprising:
- a catheter shaft carrying an inflatable/deflatable balloon having a proximal end and a distal end; and
a non-deployable radially expansible stent comprising a hypo tube disposed over the balloon and comprising a proximal end;
a distal end; and
at least three longitudinally aligned, radially-spaced struts, wherein each strut extends from the proximal end to the distal end and prior to radial expansion has one or more bends that allow longitudinal expansion of the strut to accommodate radial expansion of the stent upon inflation of the balloon;
wherein the distal end of the hypo tube is attached to the distal end of the catheter shaft and the proximal end of the tube is attached to the proximal end of the catheter shaft and the stent is made of a material having a memory so that the stent radially collapses and the struts longitudinally shorten upon deflation of the balloon.
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Abstract
An angioplasty balloon including a non-deployable stent to prevent or reduce the potential for slippage of the inflated balloon with respect to the vessel wall being treated. The balloon includes a non-deployable stent that is adapted to be secured to the balloon or angioplasty balloon catheter. The stent has a proximal end, a distal end, and at least three radially-spaced struts, each strut connecting the proximal end to the distal end and having one or more bends that allow expansion of the strut to accommodate the inflation of the balloon. The stent is made of a material so that the stent collapses upon deflation or the balloon.
127 Citations
9 Claims
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1. An angioplasty balloon catheter comprising:
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a catheter shaft carrying an inflatable/deflatable balloon having a proximal end and a distal end; and a non-deployable radially expansible stent comprising a hypo tube disposed over the balloon and comprising a proximal end;
a distal end; and
at least three longitudinally aligned, radially-spaced struts, wherein each strut extends from the proximal end to the distal end and prior to radial expansion has one or more bends that allow longitudinal expansion of the strut to accommodate radial expansion of the stent upon inflation of the balloon;
wherein the distal end of the hypo tube is attached to the distal end of the catheter shaft and the proximal end of the tube is attached to the proximal end of the catheter shaft and the stent is made of a material having a memory so that the stent radially collapses and the struts longitudinally shorten upon deflation of the balloon. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification