POLARIZATION AND TEMPERATURE INSENSITIVE SURGICAL INSTRUMENT FORCE TRANSDUCER
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United States of America Patent
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N/A
Issued Date -
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app pub date -
Jun 20, 2013
filing date -
Mar 30, 2009
priority date (Note) -
Abandoned
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Abstract
A force sensor apparatus, operatively mounted in a surgical instrument includes the force transducer. The force transducer includes a transducer body having a coefficient of thermal expansion, and at least one optic fiber, fixedly attached to the transducer body, including a Bragg grating; and having a coefficient of thermal expansion matched to the coefficient of thermal expansion of the transducer body to mitigate polarization and calibration drift effects on the force transducer. The transducer body comprises a metal transducer body, and the metal transducer body is selected from a group of metal bodies including an aluminum alloy transducer body, a stainless steel alloy transducer body, a maraging steel alloy transducer body, and a titanium alloy transducer body. The at least one optic fiber comprises an optic fiber having a negative thermo-optic coefficient, such as a phosphate glass optic fiber reducing the thermal sensitivity of the transducer.

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- 15 United States
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- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
INTUITIVE SURGICAL OPERATIONS INC | CALIFORNIA USA CALIFORNIA |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
BLUMENKRANZ, STEPHEN J | Los Altos Hills, US | 141 | 27298 |
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