Operable implant

An operable implant adapted to be implanted in the body of a patient, the operable implant comprising an operation device and a body engaging portion, the operation device comprises an electrical motor comprising a static part comprising a plurality of coils and a movable part comprising a plurality of magnets, such that sequential energizing of said coils magnetically propels the magnets and thus propels the movable part, wherein the operable implant further comprises a first gear system adapted to receive mechanical work having a first force and velocity as input, from the movable part of the electrical motor, and output mechanical work having a different force and velocity, wherein the first gear system comprises:

• an operable element connected to the movable part and configured to be propelled by the movable part,
• a tint gear having the shape of a hollow cylinder, comprising a first number of teeth, on an outside thereof, and
• a second gear having the shape of a hollow cylinder, comprising a greater number of teeth than the first gear, on an inside surface thereof, wherein the operable element is adapted to engage an inside of the first gear, such that the outside of the first gear is pressed against the inside surface of the second gear such that the teeth of the first gear are interengaged with the teeth of the second gear in at least one engaging position interspaced by at least one position at which the teeth are not interengaged, and wherein the operation of the operable element advances the at least one engaging position and thereby causes relative rotation between the first gear and the second gear,
• wherein the operation device further comprises a second gear system comprising:
• an operable element,
• a first gear having the shape of a hollow cylinder, comprising a first number of teeth, on an outside thereof, and
• a second gear having the shape of a hollow cylinder, comprising a greater number of teeth than the first gear, on an inside surface thereof, wherein the operable element is adapted to engage an inside of the first gear, such that the outside of the first gear is pressed against the inside surface of the second gear such that the teeth of the first gear are interengaged with the teeth of the second gear in at least one engaging position interspaced by at least one position at which the teeth are not interengaged, and wherein the operation of the operable element advances the at least one engaging position and thereby causes relative rotation between the first gear and the second gear, wherein
• the first gear of the first gear system is directly or indirectly connected to the operable element of the second gear system, such that the first gear system is connected in series with the second gear system, such that the first gear system receives mechanical work having a first farce and first velocity and outputs mechanical work having a second, different, force and a second, different, velocity, and the second gear system receives the output mechanical work from the first gear system, as input, and outputs mechanical work with a third different force and third different velocity.

An operable implant adapted to be implanted in the body of a patient, the operable implant comprising an operation device and a body engaging portion, the operation device comprises an electrical motor comprising a static part comprising a plurality of coils and a movable part comprising a plurality of magnets, such that sequential energizing of said coils magnetically propels the magnets and thus propels the movable part, wherein the operable implant further comprises a gear system adapted to receive mechanical work having a first force and velocity as input, from the movable part of the electrical motor, and output mechanical work having a different force and velocity, wherein the gear system comprises:

• an operable element connected to the movable part and configured to be propelled by the movable part,
• a first gear having the shape of a hollow cylinder, comprising a first number of teeth, on an outside thereof, and
• a second gear having the shape of a hollow cylinder, comprising a greater number of teeth than the first gear, on an inside surface thereof, wherein the operable element is adapted to engage an inside of the first gear, such that the outside of the first gear is pressed against the inside surface of the second gear such that the teeth of the first gear are interengaged with the teeth of the second gear in at least one engaging position interspaced by at least one position at which the teeth are not interengaged, and wherein the operation of the operable element advances the at least one engaging position and thereby causes relative rotation between the first gear and the second gear, wherein the operable element comprises at least one of a planet gear, or a structure or wheel at least partly using friction to interconnect with the first gear.