Patent ID: 11925321
Assignee: CANON U.S.A., INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 4:
5. The steerable catheter according to claim 4,
wherein, at the distal end of the catheter body, the tool channel includes a cylindrical surface that extends through the distal portion in a lengthwise direction, and the one or more keyways include linear keyways formed in the lengthwise direction on the cylindrical surface of the tool channel,
wherein the one or more keying tabs of the anti-twist feature include one or more arcuate tabs protruding radially from the housing portion and extending in the lengthwise direction of the tool channel, and
wherein, when the positioning mechanism coupled to the imaging device is inserted into the tool channel, at least one arcuate tab of the anti-twist feature fits into one of the linear keyways formed in the cylindrical surface of the tool channel thereby interlocking the imaging device to the catheter body.