Light delivery system with blood flushing capability
First Claim
Patent Images
1. A light delivery system for irradiating an internal surface of a blood vessel with light energy, comprising:
- (a) an elongated, flexible, tubular body member having a proximal end, a distal end portion and a plurality of lumens extending therebetween;
(b) a hub member connected to the proximal end of the body member and having a plurality of ports connected individually to the plurality of lumens in the body member;
(c) an inflatable member formed from a material generally transparent to light of a predetermined wavelength affixed to the distal end portion of the body member and in fluid communication with a first of the plurality of lumens for receiving an inflation fluid injected into one of the plurality of ports associated with the first of the plurality of lumens, the inflatable member including a plurality of pores for perfusing a portion of the inflation fluid therethrough at a rate sufficient to flush light absorbing substances from a zone in the blood vessel occupied by the inflatable member;
(d) an elongated, flexible, light guide member having a proximal end adapted to be coupled to a source of light energy and a distal end portion having a light diffusing surface joined thereto, said light guide member being of a size to fit through a second of the plurality of lumens, allowing the light diffusing surface to be positionable within the inflatable member; and
(e) means for controllably displacing the light diffusing surface longitudinally within the distal end portion of the tubular body member.
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Accused Products
Abstract
A light delivery system for use in irradiating vascular tissue includes a balloon catheter with a working lumen for receiving an optical fiber therein and an inflation/flushing lumen adapted to receive a liquid at a proximal end and leading to a space defined within the balloon member attached to a distal end of the catheter. The balloon member has a pattern of holes or pores in the wall thereof through which the saline may flow when the balloon is inflated, causing any blood or other absorbing substances that may interfere with good radiant energy transmission to be flushed away from the treatment site.
241 Citations
65 Claims
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1. A light delivery system for irradiating an internal surface of a blood vessel with light energy, comprising:
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(a) an elongated, flexible, tubular body member having a proximal end, a distal end portion and a plurality of lumens extending therebetween; (b) a hub member connected to the proximal end of the body member and having a plurality of ports connected individually to the plurality of lumens in the body member; (c) an inflatable member formed from a material generally transparent to light of a predetermined wavelength affixed to the distal end portion of the body member and in fluid communication with a first of the plurality of lumens for receiving an inflation fluid injected into one of the plurality of ports associated with the first of the plurality of lumens, the inflatable member including a plurality of pores for perfusing a portion of the inflation fluid therethrough at a rate sufficient to flush light absorbing substances from a zone in the blood vessel occupied by the inflatable member; (d) an elongated, flexible, light guide member having a proximal end adapted to be coupled to a source of light energy and a distal end portion having a light diffusing surface joined thereto, said light guide member being of a size to fit through a second of the plurality of lumens, allowing the light diffusing surface to be positionable within the inflatable member; and (e) means for controllably displacing the light diffusing surface longitudinally within the distal end portion of the tubular body member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A light delivery system for irradiating an internal surface of a blood vessel with light energy, comprising:
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(a) an elongated, flexible, tubular body member having a proximal end, a distal end portion and a working lumen and an inflation lumen extending from a hub member on the proximal end to the distal end portion thereof; (b) an expansible, elongated, balloon member coaxially disposed on and bonded to the body member near the distal end portion, with the inflation lumen being in fluid communication with an interior of the balloon member, the balloon member adapted to be inflated by an inflation fluid injected into the inflation lumen, the balloon member including a plurality of pores of a predetermined size extending through a wall surface thereof for permitting a fraction of the inflation fluid to pass therethrough; (c) a waveguide having a proximal end connectable to a source of light energy and a distal end including a light diffusing member, the waveguide sized to fit through the working lumen of the body member such that the light diffusing member can be advanced into the distal end portion of the body member spanned by the balloon member; and (d) means coupled to the hub member and to the waveguide for controlled, step-wise displacement of the light diffusing member within the distal end portion of the body member spanned by the balloon member. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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42. A light delivery system for irradiating an internal surface of a blood vessel with light energy, comprising:
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(a) an elongated, flexible, tubular body member having a proximal end, a distal end portion and a plurality of lumens extending therebetween; (b) a hub member connected to the proximal end of the body member and having a plurality of ports connected individually to the plurality of lumens in the body member; (c) an inflatable member formed from a material generally transparent to light of a predetermined wavelength affixed to the distal end portion of the body member and in fluid communication with a first of the plurality of lumens for receiving an inflation fluid injected into one of the plurality of ports associated with the first of the plurality of lumens, the inflatable member including a plurality of pores for perfusing a portion of the inflation fluid therethrough at a rate sufficient to flush light absorbing substances from a zone in the blood vessel occupied by the inflatable member, said plurality of pores being uniformly distributed in a circumferential band whose width is about one-half of the length dimension of the inflatable member; and (d) an elongated, flexible, light guide member having a proximal end adapted to be coupled to a source of light energy and a distal end portion having a light diffusing surface joined thereto, said light guide member being of a size to fit through a second of the plurality of lumens, allowing the light diffusing surface to be positionable within the inflatable member.
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43. A light delivery system for irradiating an internal surface of a blood vessel with light energy, comprising:
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(a) an elongated, flexible, tubular body member having a proximal end, a distal end portion and a working lumen and an inflation lumen extending from a hub member on the proximal end to the distal end portion thereof; (b) an expansible, elongated, balloon member coaxially disposed on and bonded to the body member near the distal end portion, with the inflation lumen being in fluid communication with an interior of the balloon member, the balloon member including a plurality of pores of a predetermined size extending through a wall surface thereof; (c) a waveguide having a proximal end connectable to a source of light energy and a distal end including a light diffusing member, the waveguide sized to fit through the working lumen of the body member such that the light diffusing member can be advanced into the distal end portion of the body member spanned by the balloon member; and (d) means coupled to the hub and to the waveguide for controlled, step-wise displacement of the light diffusing member within the distal end portion of the body member spanned by the balloon member. - View Dependent Claims (44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58)
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59. A light delivery system for irradiating an internal surface of a blood vessel with light energy, comprising:
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(a) an elongated, flexible, tubular body member having a proximal end, a distal end portion and a working lumen and an inflation lumen extending from a hub member on the proximal end to the distal end portion thereof; (b) an expansible, elongated, balloon member coaxially disposed on and bonded to the body member near the distal end portion, with the inflation lumen being in fluid communication with an interior of the balloon member, the balloon member adapted to be inflated by an inflation fluid injected into the inflation lumen, the balloon member including a plurality of pores of a predetermined size extending through a wall surface thereof, the plurality of pores being normally closed and open when pressure of the fluid injected into the one of the plurality of pores associated with the first lumen exceeds a predetermined value; and (c) a waveguide having a proximal end connectable to a source of light energy and a distal end including a light diffusing member, the waveguide sized to fit through the working lumen of the body member such that the light diffusing member can be advanced into the distal end portion of the body member spanned by the balloon member.
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60. A light delivery system for irradiating an internal surface of a blood vessel with light energy, comprising:
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(a) an elongated, flexible, tubular body member having a proximal end, a distal end portion and a working lumen and an inflation lumen extending from a hub member on the proximal end to the distal end portion thereof; (b) an expansible, elongated, balloon member coaxially disposed on and bonded to the body member near the distal end portion, with the inflation lumen being in fluid communication with an interior of the balloon member, the balloon member adapted to be inflated by an inflation fluid injected into the inflation lumen, the balloon member including a plurality of pores of a predetermined size extending through a wall surface thereof, said plurality of pores being uniformly distributed in a circumferential band whose width is about one-half of a length dimension of the balloon member; and (c) a waveguide having a proximal end connectable to a source of light energy and a distal end including a light diffusing member, the waveguide sized to fit through the working lumen of the body member such that the light diffusing member can be advanced into the distal end portion of the body member spanned by the balloon member.
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61. A light delivery system for exposing the interior wall of a blood vessel to light energy comprising:
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(a) an elongated, optical waveguide adapted to be connected at a proximal end to a source of light energy and having a light energy dispersing element at a distal end thereof; (b) a balloon catheter having an elongated flexible plastic catheter body having a proximal end, a distal end and a plurality of lumens extending therebetween and an inflatable expander member affixed to the catheter body at the distal end thereof, the expander member being in fluid communication with one of the plurality of lumens and the optical waveguide being insertable through another of the plurality of lumens, said means for flushing light absorbing substances comprising a plurality of fluid pervious pores formed in the expander member; and (c) means for flushing light absorbing substances from a zone between the energy dispersing element and the blood vessel wall at the treatment site. - View Dependent Claims (62, 63, 64, 65)
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Specification