Rapid exchange stent delivery balloon catheter
First Claim
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1. A rapid exchange stent delivery balloon catheter, comprising:
- a catheter shaft defining an inflation lumen, the inflation lumen having a proximal end and a distal end;
an inflatable balloon having a proximal end and a distal end;
a wire guide shaft defining a wire guide lumen, the wire guide shaft having a proximal end and a distal end, wherein the proximal end of the wire guide shaft is proximal to the proximal end of the inflatable balloon; and
a catheter tip having a proximal end and a distal end;
wherein the distal end of the inflation lumen opens into and is in fluid communication with an interior of the inflatable balloon, the distal end of the inflatable balloon is sealed by the proximal end of the catheter tip, and the wire guide shaft is coupled only to the catheter tip completely distally of the distal end of the inflatable balloon.
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Abstract
A rapid exchange stent delivery balloon catheter which allows exchange from a balloon angioplasty catheter to a stent delivery catheter without the need to replace the angioplasty catheter wire guide with an exchange-length wire guide before exchanging the stent delivery catheter for the balloon angioplasty catheter. The stent delivery catheter of the present invention includes a relatively short wire guide shaft which is bonded to the catheter shaft only at a location distal to the inflation lumen.
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Citations
14 Claims
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1. A rapid exchange stent delivery balloon catheter, comprising:
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a catheter shaft defining an inflation lumen, the inflation lumen having a proximal end and a distal end; an inflatable balloon having a proximal end and a distal end; a wire guide shaft defining a wire guide lumen, the wire guide shaft having a proximal end and a distal end, wherein the proximal end of the wire guide shaft is proximal to the proximal end of the inflatable balloon; and a catheter tip having a proximal end and a distal end; wherein the distal end of the inflation lumen opens into and is in fluid communication with an interior of the inflatable balloon, the distal end of the inflatable balloon is sealed by the proximal end of the catheter tip, and the wire guide shaft is coupled only to the catheter tip completely distally of the distal end of the inflatable balloon. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A balloon catheter stent configuration comprising:
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a catheter shaft defining an inflation lumen having a proximal end and a distal end; an inflatable balloon having a proximal end and a distal end; a wire guide shaft defining a wire guide lumen, said wire guide shaft having a proximal end and a distal end, wherein the proximal end of the wire guide shaft is proximal to the proximal end of the inflatable balloon; a catheter tip having a proximal end and a distal end; and a stent mounted on and surrounding said inflatable balloon and wire guide shaft; wherein the distal end of the inflation lumen opens into and is in fluid communication with the inflatable balloon, the distal end of the inflatable balloon is sealed by the proximal end of the catheter tip, and the wire guide shaft is coupled only to the catheter tip completely distally of the distal end of the inflatable balloon.
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Specification