Shock wave curing apparatus capable of correcting phase shifts c

Details Shock wave curing apparatus capable of correcting phase shifts c Shock wave curing apparatus capable of correcting phase shifts c

1993-04-02

1995-01-17

Pfaffle, K. M.

Surgery

Truss

Pad

601 4, A61B 1722

Patent

active

053817923

ABSTRACT:
In a shock wave generating apparatus, phase shifts contained in echo signals reflected from a calculus are corrected in order to clearly judge whether or not such a calculus is actually present at a focal point or a near region. The shock wave generating apparatus includes: a shock wave producing unit constructed of at least two transducer elements, for producing shock wave pulses used to disintegrate an object located near a focal point of said shock wave producing unit within a biological body under medical examination upon receipt of first drive pulses having first energy levels, and also for producing ultrasonic pulses used to obtain echo pulses reflected from said object near the focal point, as echo signals, upon receipt of second drive pulses having second energy levels lower than said first energy levels of the first drive pulses; an analog type phase-shift correcting unit for correcting phase shifts contained in the echo signals reflected from the object near the focal point by making respective phases of the echo signals coincident with each other as to a time domain of the analog echo signals, thereby obtaining an analog phase-corrected echo signal; a peak detecting unit for detecting a peak value of the analog phase-corrected echo signal; and a controlling unit for controlling the shock wave producing unit based on the peak value of the analog phase-corrected echo signal to determine whether or not the shock wave pulses are produced in order to destroy the object near the focal point.

REFERENCES:
patent: 4542746 (1985-09-01), Takamizawa
patent: 4862892 (1989-09-01), Green
patent: 5009232 (1991-04-01), Hassler et al.
patent: 5065763 (1991-11-01), Green et al.
patent: 5076277 (1991-12-01), Iwama et al.
patent: 5105814 (1992-04-01), Drukarey et al.
patent: 5179954 (1993-01-01), Arima
patent: 5186175 (1993-02-01), Hirama et al.
patent: 5215091 (1993-06-01), Ishida

Affiliated with

Also associated with

Rating

Shock wave curing apparatus capable of correcting phase shifts c does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Shock wave curing apparatus capable of correcting phase shifts c, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shock wave curing apparatus capable of correcting phase shifts c will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-741929