Mechanical type ultrasonic scanner

Details Mechanical type ultrasonic scanner Mechanical type ultrasonic scanner

1987-02-03

1989-02-28

Jaworski, Francis J.

Surgery

Truss

Pad

A61B 1000

Patent

active

048076341

ABSTRACT:
A mechanical type ultrasonic scanner has a housing which includes an insertion hole and a window member. The window member possesses ultrasonic transmission properties. The housing is filled with an acoustic liquid medium. A vibrator and a scanning mechanism are also accommodated in the housing. The vibrator generates ultrasonic waves. The scanning mechanism mechanically moves the vibrator, to scan the ultrasonic waves generated thereby. A rotating shaft is inserted in the housing, through the insertion hole. The rotating shaft transmits the driving force of a motor to a scanning mechanism. A seal member is inserted between the housing and the rotating shaft in the insertion hole. A partition wall is formed in the housing, to partition it into a first liquid medium chamber and an adjacent second liquid medium chamber. The first liquid medium chamber accommodates the vibrator and the scanning mechanism. The partition wall guides bubbles, undesirably inserted into the acoustic liquid medium, from the first liquid medium chamber to the second liquid medium chamber, and prevents the bubbles from returning to the first liquid medium chamber.

REFERENCES:
patent: 4316271 (1982-02-01), Evert
patent: 4418698 (1983-12-01), Dory
patent: 4424813 (1984-01-01), Havlice et al.
patent: 4432371 (1984-02-01), McAusland
patent: 4517985 (1985-05-01), Teslowski et al.
patent: 4558706 (1985-12-01), Nakada et al.
patent: 4567895 (1986-02-01), Putzke
patent: 4601292 (1986-07-01), Fidel et al.
Gardiner, B. G. "Low Pressure Fluid-Filled UTS Transmission Chamber", Europ. Pat Appln No. 0089 131 published 21-09-83, FIG. 1 only.

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