Method for intraluminally inducing cardioplegic arrest and catheter for use therein
First Claim
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1. A catheter system for inducing cardioplegic arrest while circulation is supported by cardiopulmonary bypass, the system comprising:
- an aortic catheter having a proximal end and a distal end, a first lumen, a second lumen, and a blood flow lumen each extending distally from the proximal end, a first occluding member coupled to the aortic catheter near the distal end and movable between a collapsed shape and an expanded shape, the first occluding member being configured to occlude a patient'"'"'s ascending aorta when in the expanded shape, a first outlet distal to the first occluding member coupled to the first lumen, a second outlet distal to the first occluding member coupled to the second lumen, and a blood outlet proximal to the first occluding member and coupled to the blood flow lumen, the aortic catheter having a length selected so that the occluding member is positionable in the ascending aorta with the proximal end extending to a peripheral artery;
a source of cardioplegic agent coupled to the first lumen; and
a bypass system having an inlet and an outlet, the outlet being coupled to the blood flow lumen for returning oxygenated blood to the patient.
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Abstract
A process for inducing cardioplegic arrest of a heart in situ in a patient'"'"'s body, comprising maintaining the patient'"'"'s systemic circulation by peripheral cardiopulmonary by-pass, occluding the ascending aorta through a percutaneously placed arterial balloon catheter, venting the left side of the heart, and introducing a cardioplegic agent into the coronary circulation. This procedure readies the heart for a variety of surgical procedures that can be performed percutaneously through lumina in the catheter. An aortic catheter for use in the process is also described.
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Citations
3 Claims
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1. A catheter system for inducing cardioplegic arrest while circulation is supported by cardiopulmonary bypass, the system comprising:
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an aortic catheter having a proximal end and a distal end, a first lumen, a second lumen, and a blood flow lumen each extending distally from the proximal end, a first occluding member coupled to the aortic catheter near the distal end and movable between a collapsed shape and an expanded shape, the first occluding member being configured to occlude a patient'"'"'s ascending aorta when in the expanded shape, a first outlet distal to the first occluding member coupled to the first lumen, a second outlet distal to the first occluding member coupled to the second lumen, and a blood outlet proximal to the first occluding member and coupled to the blood flow lumen, the aortic catheter having a length selected so that the occluding member is positionable in the ascending aorta with the proximal end extending to a peripheral artery; a source of cardioplegic agent coupled to the first lumen; and a bypass system having an inlet and an outlet, the outlet being coupled to the blood flow lumen for returning oxygenated blood to the patient. - View Dependent Claims (2, 3)
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Specification