Ultrasound energy delivery system and method

Details Ultrasound energy delivery system and method Ultrasound energy delivery system and method

1996-09-09

1998-04-07

Manuel, George

Surgery

Truss

Pad

601 2, 607 97, A61B 800

Patent

active

057352801

ABSTRACT:
An energy delivery system and method controls the frequency of the power driving an ultrasonic device to achieve more efficient power delivery. During operation of the ultrasonic device to deliver power to a patient site, the system and method automatically sweeps the drive power through a frequency range, locates the series and parallel resonance frequencies, calculates the average of those frequencies and locks the power generator at that average frequency to drive the crystal. This frequency sweep procedure occurs automatically when the ultrasonic crystal is located at the patient site and the power generator operator presses the power-on switch to apply power. The method of tuning the power generator thus occurs when the crystal is at the site temperature and is transparent to the operator. The application of an external bio-layer to the crystal increases its bandwidth and its robustness. Mounting a temperature sensor or sensors at the crystal permits monitoring of the crystal temperature and allows drive level control over the power generator to control the temperature at the crystal.

REFERENCES:
patent: 4706681 (1987-11-01), Breyer et al.
patent: 5295484 (1994-03-01), Marcus et al.
patent: 5304214 (1994-04-01), DeFord et al.
patent: 5431664 (1995-07-01), Ureche et al.
patent: 5447509 (1995-09-01), Mills et al.
patent: 5456682 (1995-10-01), Edwards et al.

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