Intra-aortic balloon pump apparatus and method of using same
First Claim
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1. A method of disposing a balloon inside an aorta, comprising the steps of:
- disposing at least a pair of spaced electrodes inside a thoracic aorta near a patient'"'"'s heart;
sensing a R-wave and a P-wave by said electrodes,andusing the P-wave and R-wave morphologies and their related magnitude to determine the optimal placement of the balloon pump, as close as possible to the atria.
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Abstract
An apparatus and method for placing an aortic balloon catheter is provided wherein a pair of spaced electrodes on the distal end of the catheter assembly are disposed inside a thoracic aorta near a patient'"'"'s heart and are used to sense R-waves and P-waves in an ECG signal. The electrodes are moved to an ideal intra-aortic position where the R-waves and P-waves are sensed to have the same magnitude. The P-wave, occurring earlier than the R-wave, serves to accurately predict theoccurrence of the R-wave. The balloon of the catheter is deflated upon sensing the R-wave.
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Citations
9 Claims
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1. A method of disposing a balloon inside an aorta, comprising the steps of:
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disposing at least a pair of spaced electrodes inside a thoracic aorta near a patient'"'"'s heart; sensing a R-wave and a P-wave by said electrodes, and using the P-wave and R-wave morphologies and their related magnitude to determine the optimal placement of the balloon pump, as close as possible to the atria. - View Dependent Claims (2)
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3. A method of disposing a balloon inside as aorta, comprising the steps of:
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disposing at least a pair of spaced electrodes and at least one pressure transducer inside a thoracic aorta near a patient'"'"'s heart; sensing a R-wave and a P-wave by said electrodes, inserting a balloon into the throracic aorta up to a position at which the R- and P-waves are equal in magnitude; and deflating the balloon when the R-wave occurs following sensing of the P-wave, sensing a dicrotic notch in aortic blood pressure by said pressure transducer, and inflating the balloon in response to sensing of the dicrotic notch.
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4. An intra-aortic balloon apparatus comprising:
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a tubular catheter assembly having a distal end and a proximate end, said proximate end being fixedly sucured to a coupling having a gas feed port for feeding a gas into said catheter; a balloon provided on said catheter assembly at the distal end thereof for receiving the gas fed into said catheter assembly, said balloon having a distal end and a proximate end; said catheter assembly and said balloon interiorly defining a passageway for the gas; at least a pair of electrodes provided on the distal end of said catheter assembly; and electrical terminals provided on the coupling and adapted to receive electric signals from said electrodes. - View Dependent Claims (5, 6)
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7. An intra-aortic balloon apparatus comprising:
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a tubular catheter assembly having a distal end and a proximate end, said proximate end being fixedly secured to a coupling having a gas feed port for feeding a gas into said catheter; a balloon provided on said catheter assembly at the distal end thereof for receiving the gas fed into said catheter assembly, said balloon having a distal end and a proximate end; said catheter assembly and said balloon interiorly defining a passageway for the gas; at least a pair of electrodes provided on the distal end of said catheter assembly; a pressure transducer provided on the distal end of said catheter assembly; and electrical terminals provided on the coupling and adapted to receive electric signals from said electrodes and said pressure transducer. - View Dependent Claims (8, 9)
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Specification