Intravascular systems for corporeal cooling
First Claim
1. A catheter for intravascular corporeal cooling comprising:
- an elongated tubular member having proximal and distal sections, an outer surface, and at least one lumen extending therethrough, and annular insulation having proximal and distal ends and arranged concentrically around the outer surface of the elongated tubular member, wherein at least one lumen in the tubular member can provide externally cooled blood in the direction of the distal section of the elongated tubular member and wherein externally cooled blood flowing through one or more lumens within the elongated tubular member is insulated from fluid or tissue external to the annular insulation to maintain the temperature of the cooled blood.
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Accused Products
Abstract
A catheter for intravascular corporeal cooling comprises an elongated tubular member having at least one lumen extending therethrough for providing cooled blood, an inflatable annular balloon positioned on the outer surface of the elongated tubular member, and a pressure reliever positioned in the external wall of the elongated tubular member and proximal to the annular inflatable balloon, wherein when the pressure of blood within a lumen reaches a predetermined value, the pressure reliever opens to permit fluid to be released from the elongated tubular member. In other embodiments of the invention the catheter may have two or more inflatable annular balloons that are separately inflatable and/or the catheter has an insulative outer annular member.
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Citations
28 Claims
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1. A catheter for intravascular corporeal cooling comprising:
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an elongated tubular member having proximal and distal sections, an outer surface, and at least one lumen extending therethrough, and annular insulation having proximal and distal ends and arranged concentrically around the outer surface of the elongated tubular member, wherein at least one lumen in the tubular member can provide externally cooled blood in the direction of the distal section of the elongated tubular member and wherein externally cooled blood flowing through one or more lumens within the elongated tubular member is insulated from fluid or tissue external to the annular insulation to maintain the temperature of the cooled blood. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A catheter for corporeal cooling and maintaining the temperature of fluid flowing through the catheter, comprising:
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an elongated tubular member having proximal and distal sections, an outer surface, and at least one lumen extending therethrough, and annular insulation having proximal and distal ends and arranged concentrically around the outer surface of the elongated tubular member, wherein externally cooled blood flowing through one or more lumens within the elongated tubular member is insulated from fluid or tissue external to the annular insulation so that the temperature of the cooled blood is substantially unchanged as it flows through the catheter. - View Dependent Claims (16, 17, 18, 19, 20)
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15. An insulated catheter for maintaining the temperature of fluid flowing through the catheter, comprising:
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an elongated tubular member having proximal and distal sections, an outer surface, and at least one lumen extending therethrough, and annular insulation having proximal and distal ends and arranged concentrically around the outer surface of the elongated tubular member, wherein fluid flowing through one or more lumens within the elongated tubular member is insulated from fluid or tissue external to the annular insulation so that the temperature of the fluid is substantially unchanged as it flows through the catheter.
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21. A catheter set for intravascular corporeal cooling comprising:
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a first elongated tubular member having proximal and distal ends, and a second tubular member arranged concentrically around the proximal end of the first elongated tubular member and having proximal and distal portions, wherein the distal portion of the second elongated tubular member has openings. - View Dependent Claims (22, 23)
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24. A method of treating, minimizing, or avoiding renal failure in a patient, comprising the steps of
positioning the distal portion of an intravascular corporeal cooling catheter into a renal artery of the patient, and providing cooled blood through said catheter into the renal artery.
Specification