Method and apparatus for phased array coupling ultrasonic energy

Details Method and apparatus for phased array coupling ultrasonic energy Method and apparatus for phased array coupling ultrasonic energy

1994-12-19

1996-04-23

Manuel, George

Surgery

Truss

Pad

A61B 812

Patent

active

055094171

ABSTRACT:
A method and apparatus for coupling ultrasonic energy into a clad or unclad waveguide include using phased array techniques to increase the area and intensity of radiation into the waveguide. An array of ultrasound transducers is positioned at the exterior of the waveguide and at dissimilar distances from the end of the waveguide. The transducers are individually fired by applying separate phase-shifted excitation signals. The phase shifting achieves a selected phase-differential relationship with respect to signals applied to adjacent transducers. The selected phase-differential relationship defines an angle of radiation into the waveguide. In the preferred embodiment, the apparatus is a medical device, such as an angioplasty device or ultrasound imaging device.

REFERENCES:
patent: 4870953 (1989-10-01), DonMichael et al.
patent: 5284148 (1994-02-01), Dias et al.
patent: 5304115 (1994-04-01), Pflueger et al.
patent: 5400788 (1995-03-01), Dias et al.

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