Method of perfusing the coronary vasculature
First Claim
1. A method of inducing cardioplegic arrest in a heart of a patient, the heart having a coronary vasculature, comprising the steps of:
- a) introducing at least one distal end of at least one perfusion catheter into a peripheral artery of said patient;
b) advancing said distal end of said perfusion catheter from said peripheral artery into at least one coronary ostium of a coronary artery communicating with said coronary vasculature of said patient;
c) occluding said coronary ostium of the coronary artery with an occlusion device mounted to said perfusion catheter;
d) arresting the heart.
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0 Petitions
Accused Products
Abstract
A catheter system is provided for accessing the coronary ostia transluminally from a peripheral arterial access site, such as the femoral artery, and for inducing cardioplegic arrest by direct infusion of cardioplegic solution into the coronary arteries. In a first embodiment, the catheter system is in the form of a single perfusion catheter with multiple distal branches for engaging the coronary ostia. In a second embodiment, multiple perfusion catheters are delivered to the coronary ostia through a single arterial cannula. In a third embodiment, multiple perfusion catheters are delivered to the coronary ostia through a single guiding catheter. In a fourth embodiment, multiple catheters are delivered to the coronary ostia through a single guiding catheter which has distal exit ports that are arranged to direct the perfusion catheters into the coronary ostia. In each embodiment, the catheters are equipped with an occlusion means at the distal end of the catheter for closing the coronary ostia and isolating the coronary arteries from the systemic blood flow. The occlusion means can take the form of an inflatable occlusion balloon cuff, a tapered occlusion device or an O-ring encircling the distal end of the catheter. An optional ventricular venting catheter can be included in the system for venting blood and fluids from the left ventricle of the heart. The catheter system is combined with a femoral-to-femoral cardiopulmonary bypass system to provide a system for cardioplegic arrest and total cardiopulmonary support during minimally invasive cardiac surgical procedures.
216 Citations
20 Claims
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1. A method of inducing cardioplegic arrest in a heart of a patient, the heart having a coronary vasculature, comprising the steps of:
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a) introducing at least one distal end of at least one perfusion catheter into a peripheral artery of said patient; b) advancing said distal end of said perfusion catheter from said peripheral artery into at least one coronary ostium of a coronary artery communicating with said coronary vasculature of said patient; c) occluding said coronary ostium of the coronary artery with an occlusion device mounted to said perfusion catheter; d) arresting the heart. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 18, 20)
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17. The method of claim l further comprising the step of:
i) performing coronary artery bypass graft surgery on the arrested heart of the patient.
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19. A method of cooling myocardial tissue in a heart of a patient, the heart having a coronary vasculature, comprising the steps of:
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a) introducing a distal end of at least one catheter into a peripheral artery of said patient; b) advancing said distal end of said at least one catheter from said peripheral artery into at least one coronary ostium of a coronary artery communicating with said coronary vasculature of said patient; c) occluding said coronary ostium of the coronary artery with an occlusion device mounted to the at least one catheter; d) infusing a cold fluid into said coronary vasculature through a first lumen; e) withdrawing fluid from said coronary vasculature through a second lumen.
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Specification