Medical procedure
First Claim
1. A coronary bypass procedure comprising:
- positioning a heat transfer element in a blood vessel of a patient, wherein the heat transfer element comprises;
an inlet lumen to introduce a circulating working fluid; and
an outlet lumen to extract a circulating working fluid, the outlet lumen having a helical shape to induce turbulence in blood flowing past the outlet lumen and in the working fluid;
cooling the body of the patient to less than 35°
C. using said heat transfer element; and
forming a fluid communicating graft between an arterial blood supply and the coronary artery;
wherein the patient'"'"'s blood is oxygenated with the patient'"'"'s lungs and wherein blood is circulated using the patient'"'"'s heart or using an intracorporeal pump.
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Accused Products
Abstract
The use of an intravascular cooling element to induce hypothermia in connection with a medical procedure. According to a first aspect of the present, invention, a coronary bypass procedure is conducted in which a patient'"'"'s blood is oxygenated with the patient'"'"'s lungs and in which blood is circulated using the patient'"'"'s heart or using an intracorporeal pump. The procedure preferably comprises: (a) positioning a heat transfer element in a blood vessel of a patient; (b) cooling the body of the patient to less than 35° C., more preferably 32±2° C., using the heat transfer element; and (c) forming a fluid communicating graft between an arterial blood supply and the coronary artery. The body of the patient is preferably heated to about 37° C. using the heat transfer element subsequent to the step of forming the fluid communicating graft. According to a further aspect of the invention, a hypothermic medical procedure is provided while a patient is in a conscious or semiconscious state, comprising (a) administering a beta-blocking drug to the patient; (b) delivering a heat transfer element to a blood vessel of the patient; and (c) cooling a region of the patient or the body of the patient to less than 35° C. using the heat transfer element.
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Citations
43 Claims
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1. A coronary bypass procedure comprising:
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positioning a heat transfer element in a blood vessel of a patient, wherein the heat transfer element comprises;
an inlet lumen to introduce a circulating working fluid; and
an outlet lumen to extract a circulating working fluid, the outlet lumen having a helical shape to induce turbulence in blood flowing past the outlet lumen and in the working fluid;
cooling the body of the patient to less than 35°
C. using said heat transfer element; and
forming a fluid communicating graft between an arterial blood supply and the coronary artery;
wherein the patient'"'"'s blood is oxygenated with the patient'"'"'s lungs and wherein blood is circulated using the patient'"'"'s heart or using an intracorporeal pump. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A hypothermic medical procedure comprising:
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administering a beta-blocking drug to a patient;
delivering a heat transfer element to a blood vessel of the patient, wherein the heat transfer element comprises;
an inlet lumen to introduce a circulating working fluid; and
an outlet lumen to extract a circulating working fluid, the outlet lumen having a helical shape to induce turbulence in blood flowing past the outlet lumen and in the working fluid; and
cooling a region of the patient or the body of the patient to less than 35°
C. using said heat transfer element while said patient is in a conscious or semiconscious state. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43)
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Specification