Triple-lumen intra-aortic catheter
First Claim
1. A method for reducing release of embolized air and particulate matter from a heart into general body circulatory system during cardiac surgery, comprising the steps of:
- (a) providing a triple-lumen intra-aortic catheter that comprises;
(1) an inflation lumen having a distal end and a proximate end connected to an inflation source,(2) an occlusive balloon connected to the inflation lumen distal end receiving fluid from the inflation lumen proximate end which is connected to the inflation source to inflate the occlusive balloon to occlude an artery,(3) a suction lumen having a distal end with a suction opening and a proximate end connected to a suction source, and,(4) a perfusion lumen having a distal end with a perfusion opening downstream of the suction opening and a proximate end connected to a cardiopulmonary bypass machine;
(b) inserting the triple-lumen intra-aortic catheter into an insertion point in the body and navigating the occlusive balloon to a position in the vicinity of a proximal end of an aortic root;
(c) stopping heart operation while a patient is connected to the cardiopulmonary bypass machine and the triple-lumen intra-aortic catheter is inserted;
(d) inflating an occlusive balloon with a fluid to block blood flow from the heart through an aortic artery into the general body circulatory system;
(e) perfusing oxygenated blood from the cardiopulmonary bypass machine into the aorta downstream of the occlusive balloon during heart surgery to supply the general body circulatory system with oxygenated blood;
(f) performing surgical procedures on the heart while the heart is stopped and the triple-lumen intra-aortic catheter is inserted in the vicinity of the proximal end of the aortic root, the occlusive balloon is inflated and the perfusion lumen is perfusing oxygenated blood from the cardiopulmonary bypass machine into the aorta downstream of the occlusive balloon;
(g) restarting heart operation after surgical procedures on the heart have been completed and the occlusive balloon continues to be inflated and the perfusion lumen continues to perfuse oxygenated blood;
(h) suctioning blood from an initial heart pumping by applying the suction source through the suction lumen to draw the blood into a receptacle so the release of embolized air and particulate matter into the body general circulatory system during cardiac surgery is reduced which decreases end organ injury complications following cardiac surgery;
(i) deflating the occlusive balloon by removing fluid from the occlusive balloon through the inflation lumen; and
,(j) removing the triple-lumen intra-aortic catheter from the proximal end of the aortic root and navigating the triple-lumen intra-aortic catheter out of the body through the insertion point.
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Accused Products
Abstract
A method and apparatus used during cardiac surgery for reducing release of embolized air and particulate matter into general body circulatory system are disclosed. The method uses a catheter apparatus having an inflation lumen, an occlusive balloon, a suction lumen and a perfusion lumen. The catheter is inserted or navigated to into an aortic root and positioned so a suction opening communicates upstream of the aortic root and a perfusion opening communicates downstream of the suction opening. The patient'"'"'s heart is stopped and the occlusive balloon is inflated to occlude the aorta. Cardiac surgery is performed and when the patient'"'"'s heart is restarted the blood pumped by the heart during its first few contractions is suctioned through the suction opening. This initial blood pumped by the heart often contains embolized air and particulate matter which can cause a stroke or subtle cognitive changes if allowed to enter the general circulatory system.
166 Citations
24 Claims
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1. A method for reducing release of embolized air and particulate matter from a heart into general body circulatory system during cardiac surgery, comprising the steps of:
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(a) providing a triple-lumen intra-aortic catheter that comprises; (1) an inflation lumen having a distal end and a proximate end connected to an inflation source, (2) an occlusive balloon connected to the inflation lumen distal end receiving fluid from the inflation lumen proximate end which is connected to the inflation source to inflate the occlusive balloon to occlude an artery, (3) a suction lumen having a distal end with a suction opening and a proximate end connected to a suction source, and, (4) a perfusion lumen having a distal end with a perfusion opening downstream of the suction opening and a proximate end connected to a cardiopulmonary bypass machine; (b) inserting the triple-lumen intra-aortic catheter into an insertion point in the body and navigating the occlusive balloon to a position in the vicinity of a proximal end of an aortic root; (c) stopping heart operation while a patient is connected to the cardiopulmonary bypass machine and the triple-lumen intra-aortic catheter is inserted; (d) inflating an occlusive balloon with a fluid to block blood flow from the heart through an aortic artery into the general body circulatory system; (e) perfusing oxygenated blood from the cardiopulmonary bypass machine into the aorta downstream of the occlusive balloon during heart surgery to supply the general body circulatory system with oxygenated blood; (f) performing surgical procedures on the heart while the heart is stopped and the triple-lumen intra-aortic catheter is inserted in the vicinity of the proximal end of the aortic root, the occlusive balloon is inflated and the perfusion lumen is perfusing oxygenated blood from the cardiopulmonary bypass machine into the aorta downstream of the occlusive balloon; (g) restarting heart operation after surgical procedures on the heart have been completed and the occlusive balloon continues to be inflated and the perfusion lumen continues to perfuse oxygenated blood; (h) suctioning blood from an initial heart pumping by applying the suction source through the suction lumen to draw the blood into a receptacle so the release of embolized air and particulate matter into the body general circulatory system during cardiac surgery is reduced which decreases end organ injury complications following cardiac surgery; (i) deflating the occlusive balloon by removing fluid from the occlusive balloon through the inflation lumen; and
,(j) removing the triple-lumen intra-aortic catheter from the proximal end of the aortic root and navigating the triple-lumen intra-aortic catheter out of the body through the insertion point. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A triple-lumen intra-aortic catheter, comprising:
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(a) an inflation lumen having a distal end and a proximate end connected to an inflation source; (b) an occlusive balloon connected to the inflation lumen distal end receiving fluid from the inflation lumen proximate end connected to the inflation source to inflate the occlusive balloon to occlude an artery and to reduce the movement of particulates around the balloon; (c) a perfusion lumen having a distal end with a perfusion opening downstream of the occlusive balloon and a proximate end connected to a cardiopulmonary bypass machine; and
,(d) a suction lumen having a distal end with a suction opening upstream of the occlusive balloon and perfusion opening and a proximate end connected to a suction source. - View Dependent Claims (21, 22, 23, 24)
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Specification