Technicare Corporation

Unirad Corporation

Other

Dale C Rudolph

Michael D Ray

Paul W Daugherty

Richard L Hansher

Disclosed is a system for identifying which one of a plurality of interchangeable transducer heads is connected with an ultrasonic scanner. The system includes a unique impedance mounted on each transducer head and an impedance determining circuit in the scanner for determining the impedance of the interconnected transducer head. The impedance determination circuit is connected to a character generator for producing an alpha-numeric representation of the transducer head designation along the margin of a cathode ray tube on which an ultrasonic image is displayed. Also disclosed is an improved resolver mounting in which a cylindrical axle is used as a pivot pin between two scan arms of the ultrasonic scanner. A potentiometer for resolving the angle between pivotally connected arms is mounted on one arm with its shaft resiliently connected with the axle for rotation with the axle and other scan arm.

Interchangeable component identification system

An overhead arm assembly particularly suited for selectively positioning ultrasonic medical diagnostic equipment. The assembly is comprised of three interconnected pivot arms having both dynamic and static counterweights and arranged so that the outermost or third arm is always vertically oriented. A work element manipulation assembly is rotatably mounted to the third arm adjacent the distal end thereof and a scan arm assembly is mounted to the manipulation assembly. The manipulation assembly includes means for setting the angular orientation of a plane in which the scan arm assembly is constrained and means for selectively shifting the scan arm assembly to other, parallel planes of constraint. The scan arm assembly is dynamically counterweighted and is comprised of pivotally interconnected scan arms which carry a work element such as an ultrasonic transducer.

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Parker, CO, United States of America

Dale C Rudolph