Stent delivery system
First Claim
Patent Images
1. A catheter system comprising:
- a catheter comprising an expandable distal portion constructed and arranged for expanding the outer diameter of said catheter from a contracted state to an expanded state, the expandable distal portion having a first end, a second end and a center portion between the first and second ends;
a stent positioned around said distal portion of said catheter, said stent having a contracted condition and being expandable to an expanded condition, and being sized in said contracted condition to closely surround said catheter in the contracted state, said stent having at least an end portion lying over said expandable portion of said catheter; and
a stent retaining sleeve in the region of the distal portion of the catheter and positioned around the catheter, having a first end connected to the catheter, and a second end, the first end of the stent retaining sleeve being axially fixed relative to the first end of the expandable distal portion and the second end of the stent retaining sleeve lying over said end portion of said stent, wherein the stent retaining sleeve comprises;
a first sleeve in the region of said distal portion of said catheter and positioned around said catheter, having a first end connected to said catheter, and a second end; and
a first band bonded to the first sleeve, wherein a portion of the first sleeve is positioned between the first band and the expandable distal portion of the catheter, the first band being positioned entirely between the first end and the second end of the first sleeve.
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Accused Products
Abstract
This invention relates to catheters used for delivering medical devices. The catheter incorporates sleeves which aid in containing the medical device on the catheter, wherein the sleeves have portions comprising high modulus material to aid in the function of the sleeves.
212 Citations
23 Claims
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1. A catheter system comprising:
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a catheter comprising an expandable distal portion constructed and arranged for expanding the outer diameter of said catheter from a contracted state to an expanded state, the expandable distal portion having a first end, a second end and a center portion between the first and second ends;
a stent positioned around said distal portion of said catheter, said stent having a contracted condition and being expandable to an expanded condition, and being sized in said contracted condition to closely surround said catheter in the contracted state, said stent having at least an end portion lying over said expandable portion of said catheter; and
a stent retaining sleeve in the region of the distal portion of the catheter and positioned around the catheter, having a first end connected to the catheter, and a second end, the first end of the stent retaining sleeve being axially fixed relative to the first end of the expandable distal portion and the second end of the stent retaining sleeve lying over said end portion of said stent, wherein the stent retaining sleeve comprises;
a first sleeve in the region of said distal portion of said catheter and positioned around said catheter, having a first end connected to said catheter, and a second end; and
a first band bonded to the first sleeve, wherein a portion of the first sleeve is positioned between the first band and the expandable distal portion of the catheter, the first band being positioned entirely between the first end and the second end of the first sleeve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
a second sleeve in the region of said distal portion of said catheter and positioned around said catheter, having a first end connected to said catheter, and a second end lying over an end portion of said stent, the second sleeve opposingly situated relative to the first sleeve; and
a second band bonded to the sleeve, wherein a portion of the second sleeve is positioned between the second band and the expandable distal portion of the catheter, wherein the second band comprises a high modulus material relative to the second sleeve material and said second sleeve covering said end of said stent on said catheter when said catheter is in the contracted state, said catheter and stent cooperatively constructed and arranged for expansion of said catheter from said contracted state to said expanded state and to cause said second sleeve and second band to recede relatively axially, drawing said second sleeve from over said stent, thereby releasing said end of the stent from said catheter.
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17. The catheter system of claim 1, wherein first end of the stent retaining sleeve is bonded to the first end of the expandable distal portion.
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18. A catheter system comprising:
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a catheter comprising an expandable distal portion constructed and arranged for expanding the outer diameter of said catheter from a contracted state to an expanded state, said expandable distal portion being a balloon having at least one cone portion;
a first sleeve in the region of said distal portion of said catheter and positioned around said catheter, having a first end gripped to said catheter, and a second end, said first sleeve comprising a first member and a second member, said members both having first and second ends, the first sleeve further comprising a first band of high modulus material relative to the members, wherein the first end of the first member is gripped to the catheter and the second end of the first member is connected to the first band and wherein the first end of the second member is connected to the first band, whereby the first band is between the first and second members. - View Dependent Claims (19, 20, 21, 22, 23)
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Specification