Torque-transmitting, variably-flexible, corrugated insertion device and method for transmitting torque and variably flexing a corrugated insertion device
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United States of America Patent
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Mar 29, 2011
Grant Date -
Aug 20, 2009
app pub date -
Apr 29, 2009
filing date -
Aug 10, 2006
priority date (Note) -
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Abstract
A torque-transmitting, variably-flexible, corrugated insertion device includes a hollow body having a proximal end with an entrance for receiving an instrument and a distal end with a tip for protrusion of the instrument. A vacuum-activated device transitions the hollow body between a relatively flexible condition and a relatively stiff condition. A corrugated tube transmits torque from the proximal end toward the distal end. A method for transmitting torque and variably flexing an insertion device for receiving an instrument includes providing a hollow body, transmitting torque along the hollow body with a corrugated tube, applying suction to create a vacuum in the hollow body for placing the hollow body in a relatively stiff condition, and relieving the vacuum for placing the hollow body in a relatively flexible condition.
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