Endocardial device for producing reversible damage to heart tissue
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United States of America Patent
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Aug 22, 2000
Grant Date -
N/A
app pub date -
Sep 30, 1998
filing date -
Sep 30, 1997
priority date (Note) -
Expired
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Abstract
A minimally invasive medical or surgical device creates holes in heart tissue utilizing a needle connected to an energy source, such a radio frequency generator, a resistive heating source, or a microwave energy source. The needle is inserted into heart tissue from an interior of the heart and activated to heat the surrounding tissue in order to produce reversible tissue damage. The device consists of an energy source and regulator, electric contacts to the energy source, a catheter, and a needle at the distal end of the catheter for delivering energy to the heart tissue. The catheter is fed through the vasculature into the interior of the heart. A temperature sensor may be positioned on the needle for sensing a temperature of the heart tissue in which the needle has been inserted. Preferably, a regulator is connected to the energy source and to the temperature sensor for controlling the temperature of the heart tissue in which the needle has been inserted to about 40.degree. C. to about 60.degree. C. as sensed by the temperature sensor.
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