Abstract: Actuator (1) for a medical device (100), comprising an electromotor, a mechanical transmission, and magnetic coupling means arranged for transmitting a mechanical torque from the electromotor to the mechanical transmission when said electromotor is powered by an energy source, wherein said electromotor and a first part of the magnetic coupling means kinematically linked to the electromotor are arranged and hermetically sealed in a first casing module, and wherein said mechanical transmission and a second part of the coupling means kinematically linked to said mechanical transmission are arranged in a second casing module, said first and second casing modules comprising each complementary fastening means such that said first and second casing modules can be removably connected to each other in such a way that said first and second parts of the magnetic coupling means magnetically couple together upon connection of said first and second casing modules.

Abstract: Artificial contractile structure (1) for a medical device, said artificial contractile structure (3) comprising: —an elongated member (3) adapted to contact a hollow body organ; —a closure (9) adapted to form the artificial contractile structure (1) into a closed loop around said hollow body organ; —a tension system (11) arranged to be connected to a control unit (28), said tension system (1) being adapted to modify an internal diameter of said closed loop in response to a force applied by said control unit (28). According to the invention, said elongated member (3) comprises a resilient core (5) and a biocompatible outer sheath (7). Said tension system (11) furthermore comprises a first tensile element (13) attached to a first point (3c) of said elongated member, and a second tensile element (15) attached to a second point (3d) of said elongated member, each of said tensile elements (15, 17) passing through an adaptor (17) situated between said first point (3c) and said second point (3d).

Abstract: A medical device has an artificial contractile structure including at least one contractile element adapted to contract a hollow body organ in such a way that said contractile element is adapted to be in a resting position or in an activated position, the activated position being defined with the contractile element constricting the hollow body organ and the resting position being defined with the contractile element not constricting the hollow body organ. The medical device further includes a tensioning device adapted to apply a force so as to tighten the contractile element around the hollow body organ. The medical device further includes a means for eliminating a dead zone of the contractile element when the contractile element is attached around hollow organ with a circumference of the contractile element less than a maximum possible circumference.

Abstract: A medical device is provided including an artificial contractile structure which may be used to assist the functioning of a hollow organ. The medical device includes an artificial contractile structure including at least one contractile element configured to contract an organ, in such way that the contractile element is in a resting or in an activated position, at least one actuator configured to activate the contractile structure, and at least one source of energy to power the actuator. The medical device includes a corrosion reducing system configured to reduce corrosion of the medical device.

Abstract: Medical device including an artificial contractile structure including at least one contractile element adapted to contract a hollow body organ, in such a way that the contractile element is adapted to be in a resting position or in an activated position, the activated position being defined with the contractile element constricting the hollow body organ and the resting position being defined with said contractile element not constricting the hollow body organ. The medical device can include a tensioning device adapted to apply a force so as to tighten the contractile element around said hollow body organ. The tensioning device can be arranged to cause the contractile element to apply a substantially uniform occlusive pressure of at most 8N/cm2, along the circumference of the contact area between the contractile element and the hollow body organ when the contractile element is in its activated position.

Abstract: Medical device including an artificial contractile structure including at least one contractile element adapted to contract a hollow body organ, in such a way that the contractile element is adapted to be in a resting position or in an activated position, the activated position being defined with the contractile element constricting the hollow body organ and the resting position being defined with said contractile element not constricting the hollow body organ. The medical device can include a tensioning device adapted to apply a force so as to tighten the contractile element around said hollow body organ. The tensioning device can be arranged to cause the contractile element to apply a substantially uniform occlusive pressure of at most 8N/cm2, along the circumference of the contact area between the contractile element and the hollow body organ when the contractile element is in its activated position.