Medical-grade actuator having a modular structure and medical device comprising same

A medical device, comprising an artificial contractile device and an actuator, the artificial contractile device comprising at least one contractile element comprising a flexible strip extending in a longitudinal direction and a closure for forming the at least one contractile element into a closed loop around a hollow body organ, the closure being situated at a first extremity of the flexible strip, the at least one contractile element being adapted to contract a hollow body organ, in such a way that said at least one contractile element is adapted to be in a resting position or in an activated position, the activated position being defined with said at least one contractile element constricting the hollow body organ and the resting position being defined with said at least one contractile element not constricting the hollow body organ, characterized in that the artificial contractile device further comprises:

• a flexible transmission comprising a tensioning element being anchored at a first end to a first anchoring point on the flexible strip, said flexible transmission being adapted to tighten the at least one contractile element formed in the closed loop around said hollow body organ upon application of a traction force at an end of the tensioning element by the actuator, and a connector adapted to connect the flexible transmission to said actuator, a second end of said tensioning element being anchored in said connector,
• the actuator comprising a connection socket configured for a push-fit connection with said connector, wherein said connector comprises a helicoidal spring or an o-ring linking a first annular groove provided in one of said actuator and said connector and providing a kinematic link with a further annular groove provided in an other of said actuator and said connector, said actuator comprising an actuating mechanism arranged to apply a tensile force to said tensioning element of the flexible transmission when said connector is connected into said socket.