Surgery – Endoscope – With means for indicating position – depth or condition of...
Reexamination Certificate
2007-05-04
2010-12-28
Leubecker, John P (Department: 3739)
Surgery
Endoscope
With means for indicating position, depth or condition of...
C600S118000, C600S424000
Reexamination Certificate
active
07857753
ABSTRACT:
A source coil drive circuit section of an endoscope shape detection device includes, an oscillator that generates a sine wave and an amplifier that amplifies the sine wave and generates (drives) an alternating magnetic field to source coils through a switch section. The switch section is configured to switch a direct current to an output of the amplifier and supply to the source coils. In the source coil drive circuit section, a direct current resistance value detection section for measuring a direct current resistance value of the source coils by voltage drop when the switch section is supplying the direct current to the source coils is provided.
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Extended Supplementary European Search Report dated Aug. 5, 2010.
Aizawa Chieko
Miyake Kensuke
Miyoshi Yoshitaka
Niwa Hiroshi
Oda Tomohiko
Candler Samuel
Leubecker John P
Olympus Corporation
Olympus Medical Systems Corp.
Scully , Scott, Murphy & Presser, P.C.
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