Patent ID: 11872172
Assignee: LIKO RESEARCH & DEVELOPMENT AB
Field: Medical technology (Instruments)
Classification: CPC A  F  G | IPC A  F  G

Claim 12:
13. A selectably driven movement system comprising:
a motor;
a drive shaft operatively coupled to the motor;
a brake hub coupled to the drive shaft, the brake hub having an outer cylindrical surface and configured to be driven by the drive shaft to rotate in one of a clockwise direction and a counter-clockwise direction;
a control hub having an outer cylindrical surface, the control hub being concentrically aligned with and operatively coupled to the brake hub, wherein the control hub is selectively driven by the brake hub;
a wrap spring operatively coupling the control hub to the brake hub; and
an actuation mechanism operatively coupled to the wrap spring to urge the wrap spring to expand in a radial direction with respect to a longitudinal axis of the brake hub to allow the control hub to rotate with respect the brake hub, the actuation mechanism comprising:
a ratchet; and
a ratchet wheel including one or more ramped gear teeth engageable with the ratchet in one direction to expand the wrap spring in the radial direction.