Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical energy applicator
Patent
1998-05-05
2000-04-11
Getzow, Scott M.
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical energy applicator
A61B 500
Patent
active
060497378
ABSTRACT:
An apparatus for delivering energy to a biological site includes a catheter having a plurality of electrodes arranged in a linear array, the electrodes positioned proximal the biological site. A power control system supplies power, each having a controllable duty cycle and phase angle, to each of the electrodes. A backplate is also positioned proximal the biological site so that the biological site is interposed between the electrode device and the backplate. The backplate is maintained at the reference voltage level in relation to the power. The power control system controls the phase angle of each power signal so that current flows between the electrodes and between the electrodes and the backplate results. Temperature sensors are located at the electrodes and each shares a common lead with the power circuitry. The temperature sensor signal is received by the power control system during the off-period of the duty cycle of the particular electrode.
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patent: 5411532 (1995-05-01), Mortazavi
patent: 5542916 (1996-08-01), Hirsch et al.
patent: 5697928 (1997-12-01), Walcott et al.
patent: 5782828 (1998-07-01), Chen et al.
ISHM '87 Proceedings "Taming Thermocouple Voltages in Microelectronics" by Roy Chapel, pp. 104-112.
"The Thermocouple", Omega Catalog, vol. 27, pp. Z9-Z20.
Sherman Marshall L.
Simpson John A.
Cardiac Pacemakers Inc.
Getzow Scott M.
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