Multi-lumen fluted balloon radiation centering catheter
First Claim
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1. A multi-lumen balloon radiation centering catheter assembly, comprising:
- a multi-lumen balloon having a plurality of inflatable outer lumens disposed around a central lumen, the plurality of outer lumens integrally coupled with the central lumen so as to form the multi-lumen balloon with a continuous perimeter; and
a catheter shaft disposed proximate to the balloon, the catheter shaft including an inner lumen longitudinally extending through at least a portion of the catheter shaft proximate the balloon and connected to the central lumen, the inner lumen adapted for receiving a radiation source lumen, the inner lumen further adapted for receiving a guidewire lumen for positioning the multi-lumen balloon radiation centering catheter within a body vessel, wherein the guidewire lumen extends lengthwise through one of the plurality of outer lumens, and wherein slideable seals are provided to seal both ends of the multi-lumen balloon where the guidewire is received.
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Abstract
A multi-lumen balloon for use in a fluted balloon centering catheter and method for providing the same. The multi-lumen balloon maintains a radiation source at the center of a cardiovascular artery, has improved blood perfusion capability, and has improved balloon refolding characteristics. The method of fabricating a multi-lumen balloon designed for a radiation centering catheter uses an improved extrusion process that allows the manufacture of the multi-lumen balloon sub-assembly to be done separately from the catheter shaft assembly.
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Citations
79 Claims
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1. A multi-lumen balloon radiation centering catheter assembly, comprising:
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a multi-lumen balloon having a plurality of inflatable outer lumens disposed around a central lumen, the plurality of outer lumens integrally coupled with the central lumen so as to form the multi-lumen balloon with a continuous perimeter; and a catheter shaft disposed proximate to the balloon, the catheter shaft including an inner lumen longitudinally extending through at least a portion of the catheter shaft proximate the balloon and connected to the central lumen, the inner lumen adapted for receiving a radiation source lumen, the inner lumen further adapted for receiving a guidewire lumen for positioning the multi-lumen balloon radiation centering catheter within a body vessel, wherein the guidewire lumen extends lengthwise through one of the plurality of outer lumens, and wherein slideable seals are provided to seal both ends of the multi-lumen balloon where the guidewire is received. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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12. The multi-lumen balloon radiation centering catheter of claim assembly 1, further comprising a soft tip coupled to a distal end of the guidewire lumen.
- 13. The multi-lumen balloon radiation centering catheter of claim assembly 8, further comprising a distal marker and a proximal marker coupled with the radiation source lumen and disposed within the balloon distal seal and the balloon proximal seal.
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27. A multi-lumen balloon radiation centering catheter assembly, comprising:
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a multi-lumen balloon having a plurality of inflatable outer lumens disposed around a central lumen, the plurality of outer lumens integrally coupled with the central lumen so as to form the multi-lumen balloon with a continuous perimeter; and a catheter shaft disposed proximate to the balloon, the catheter shaft including an inner lumen longitudinally extending through at least a portion of the catheter shaft proximate the balloon and connected to the central lumen, the inner lumen adapted for receiving a radiation source lumen, the inner lumen further adapted for receiving a guidewire lumen for positioning the multi-lumen balloon radiation centering catheter within a body vessel, wherein the guidewire lumen is positioned distal to the multi-lumen balloon, and wherein slideable seals are provided to seal both ends of the catheter shaft where a guidewire is received. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53)
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38. The multi-lumen balloon radiation centering catheter of claim assembly 27, further comprising a soft tip coupled to a distal end of the guidewire lumen.
- 39. The multi-lumen balloon radiation centering catheter of claim assembly 34, further comprising a distal marker and a proximal marker coupled with the radiation source lumen and disposed within the balloon distal seal and the balloon proximal seal.
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54. A multi-lumen balloon radiation centering catheter assembly, comprising:
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a multi-lumen balloon having a plurality of inflatable outer lumens disposed around a central lumen, the plurality of outer lumens integrally coupled with the central lumen so as to form the multi-lumen balloon with a continuous perimeter and having a slideable proximal seal end and a distal seal end to seal a lumen capable of receiving a guidewire; and a catheter shaft having a proximal end and a distal end, the catheter distal end coupled with the balloon proximal seal end, the catheter shaft comprising an inner tubular member which extends coaxially within an outer tubular member, the inner tubular member adapted for receiving a radiation source lumen, the inner tubular member further adapted for receiving at least one inflation lumen that is in fluid communication with the plurality of outer lumens to allow an inflation medium to inflate the plurality of outer lumens so as to cause the radiation source lumen to be centered within a body vessel. - View Dependent Claims (55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79)
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Specification