Heart-synchronized vacuum-assisted pulsed laser system and method
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United States of America Patent
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Jun 30, 1992
Grant Date -
N/A
app pub date -
Sep 24, 1990
filing date -
Sep 24, 1990
priority date (Note) -
Expired
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Abstract
A heart-synchronized vacuum-assisted pulsed laser technique generates a valve control signal in response to the ECG of a beating heart which is to be synchronized with the laser; the valve control signal is applied to a valve to open it and permit laser gas to be delivered to the gas inlet of the laser assisted by the draw from a vacuum source at the gas outlet of the laser, to produce a predetermined range of laser gas pressure in the laser; the valve control signal is ceased after the predetermined range of laser gas pressure has been reached to end the gas flow through the laser and enable the rebuilding of the vacuum in the vacuum source; and a laser firing signal is generated to fire the laser when the laser gas pressure is in the predetermined range.
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