Surgery – Diagnostic testing – Measuring anatomical characteristic or force applied to or...
Patent
1996-09-12
1998-06-16
Jaworski, Francis
Surgery
Diagnostic testing
Measuring anatomical characteristic or force applied to or...
73573, 73579, A61B 5103, G01N 338
Patent
active
057661375
ABSTRACT:
A hardness measuring apparatus in which a frequency deviation detecting circuit is used has a contact element, an oscillator, a self-oscillating circuit and a gain variation compensating circuit. The self-oscillating circuit feeds back oscillation information of the oscillator to generate a resonant state. The gain variation compensating circuit is disposed in the self-oscillating circuit. The gain variation compensating circuit has a central frequency different from that of the self-oscillating circuit, and increases gain in response to a change in frequency.
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Technical Digest of the 9th Sensor Symposium, "New Type Tactile Sensor for Sensing Hardness Like the Human Hand and Its Applications for Living Tissue", S. Omata, pp. 257-260.
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Axiom Co., Ltd.
Jaworski Francis
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