Modular and lightweight myoelectric prosthesis components and related methods
AssigneeRehabilitation Institute of Chicago
InventorsJames Lipsey, Jon Sensinger
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Abstract
Prosthetic devices and, more particularly, modular myoelectric prosthesis components and related methods, are described. In one embodiment, a hand for a prosthetic limb may comprise a rotor-motor; a transmission, comprising a differential roller screw; a linkage coupled to the transmission; and at least one finger coupled to the linkage. In one embodiment, a component part of a wrist of a prosthetic limb may comprise an exterior-rotor motor, a planetary gear transmission, a clutch, and a cycloid transmission. In one embodiment, an elbow for a prosthetic limb may comprise an exterior-rotor motor, and a transmission comprising a planetary gear transmission, a non-backdrivable clutch, and a screw.
Claims24
A component part of a wrist of a prosthetic limb, comprising an exterior-rotor motor comprising a rotor and a stator;
- a planetary gear transmission comprising a plurality of planetary gears and a sun gear, the sun gear being fastened to the stator and engaged with the plurality of planetary gears;
- a clutch;
- and a cycloid transmission;
- in a transmission arrangement such that actuation of the exterior-rotor motor causes movement through the planetary gear transmission, clutch, and cycloid transmission to cause rotation of the wrist;
- wherein the rotor is positioned on the outside of the stator.
A wrist of a prosthetic limb, comprising:
- a wrist rotator comprising a first exterior-rotor motor comprising a first stator;
- a first planetary gear transmission comprising a first plurality of planetary gears and a first sun gear, the first sun gear being fastened to the first stator and engaged with the first plurality of planetary gears;
- a first clutch and a first cycloid transmission, in a transmission arrangement such that actuation of the first exterior-rotor motor causes movement through the first planetary gear transmission, first clutch, and first cycloid transmission to cause rotation of the wrist;
- a wrist flexor comprising a second exterior-rotor motor comprising a second stator;
- a second planetary gear transmission comprising a second plurality of planetary gears and a second sun gear, the second sun gear being fastened to the second stator and engaged with the second plurality of planetary gears;
- a second clutch;
- and a second cycloid transmission, in a transmission arrangement such that actuation of the second exterior-rotor motor causes movement through the second planetary gear transmission, second clutch, and second cycloid transmission to cause flexion of the wrist;
- the first clutch comprising a non-backdrivable mechanism for preventing output motion of the first clutch to be transmitted to the first cycloid transmission;
- and
- the second clutch comprising a non-backdrivable mechanism for preventing output motion of the second clutch to be transmitted to the second cycloid transmission;
- wherein each of the first exterior-rotor motor and the second exterior-rotor motor further comprises a rotor, the rotor of each motor being positioned on the outside of the stator of the motor.
Dependencies are inferred from the claim text.