MODULAR AND LIGHTWEIGHT MYOELECTRIC PROSTHESIS COMPONENTS AND RELATED METHODS
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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.
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Citations
38 Claims
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1-18. -18. (canceled)
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19. A transmission for an elbow joint of a prosthetic limb, the transmission comprising:
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a motor, a gear set comprising at least one gear, a non-backdrivable clutch, and a screw, adapted to be housed in a frame pivotally attached to a second portion of the limb; the screw adapted to be coupled to a nut and a first portion of the limb that is pivotable with respect to the second portion of the limb; the screw adapted to receive a rotational force in a first direction from the clutch, and in response to the rotational force in the first direction, extend the nut linearly with respect to the transmission; and the screw further adapted to receive a rotational force in a second direction from the clutch, and in response to the rotational force in the second direction, retract the nut linearly with respect to the transmission. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A transmission for an elbow joint of a prosthetic upper limb configured to pivot a first portion of the limb relative to a second portion of the limb, the transmission comprising:
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a motor; a gear set comprising at least one gear in mechanical communication with the motor; a non-backdrivable clutch in mechanical communication with the at least one gear; a screw having a first end and a second end, the first end in mechanical communication with the clutch; and a nut in mechanical communication with the second end of the screw wherein the motor, the gear set, the non-backdrivable clutch and the screw are configured to be housed with a frame that is configured to be pivotally attached to the second portion of the limb, wherein the screw is configured to be coupled to the first portion of the limb that is pivotable with respect to the second portion of the limb, wherein the screw is configured to receive a first rotational force in a first direction from the clutch, and, in response to the first rotational force in the first direction, extend the nut linearly with respect to the transmission, and wherein the screw is further configured to receive a second rotational force in a second direction from the clutch, and, in response to the second rotational force in the second direction, retract the nut linearly with respect to the transmission. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38)
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Specification