Heart examination by means of ultrasound waves

Details Heart examination by means of ultrasound waves Heart examination by means of ultrasound waves

1984-11-30

1987-01-06

Kamm, William E.

Surgery

Truss

Pad

A61B 1000

Patent

active

RE0323233

ABSTRACT:
An examination of the human heart is carried out by means of ultrasound waves emitted by piezo-electric crystals. The crystals are inserted in a holder adapted to be placed on the body of a patient; they are arranged in a row and have parallel axes of radiation. The crystals are cyclically excited at a high scanning frequency, and the echo signals reflected by the heart walls and received by the crystals are displayed on the screen of a cathode ray tube to obtain a cross-sectional picture of the heart. In a modification of the invention, the holder comprises two or more rows of crystals radiating at different angles; in this case the echo signals related to a common point of the heart wall are superposed on the screen of the cathode ray tube by means of a coordinate transformation.

REFERENCES:
patent: 2628335 (1953-02-01), Drake
patent: 2700895 (1955-02-01), Carson
patent: 3279242 (1966-10-01), Megoloff
patent: 3548642 (1970-12-01), Flaherty et al.
patent: 3561430 (1971-02-01), Filler, Jr. et al.
patent: 3577772 (1971-05-01), Perilhou
patent: 3605724 (1971-09-01), Flaherty
patent: 3624744 (1971-11-01), Munger
Buschmann, "Ultrasonics", Jan-Mar. 1965, pp. 21-25.

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