Rehabilitation and Exercise Device
A rehabilitation and exercise device having patient engagement members on opposite sides of a rotary member. The device includes a motor connected to the rotary member by a clutch linked to the motor. The motor is configured to desirably rotate the rotary member so that the device may serve to move the feet/legs or other extremities of a patient through a range of motion, but do not require any application of muscle force by the patient. The clutch is also operable to disconnect the motor so that the only force applied to rotary member is the muscle force of the patient. The clutch is also advantageously operable to provide continuous passive motion and enable powered movement of a desired and adjustable amount provided by the motor, yet enable desired participation by the patient in application of muscle force.
1 . A rehabilitation and exercise device, comprising:
a rotary member mounted for rotary motion and having a patient engagement member operatively associated therewith;
a motor having a force output; and
a clutch having a linkage connecting the motor to the rotary member;
wherein the motor and the clutch are operable to:
(1) apply the force output of the motor to rotate the rotary member at a first motor rotational rate without application of any muscle force by a patient,
(2) not apply the force output of the motor to the rotary member so that muscle force must be applied by the patient to rotate the rotary member at a first patient rotational rate, or
(3) apply the force output of the motor to the rotary member in a varying amount, to provide the output force of the motor in amount to provide a second motor rotational rate to provide continuous passive rotational motion of the rotary member, yet enable desired participation by the patient to apply muscle force to rotate the rotary member, wherein when the patient applies muscle force, the motor and the clutch may be operated to (a) maintain the rate of rotation the rotary member the same as when the patient is not applying muscle force, with the amount the force output of the motor being decreased in an amount corresponding to the amount of muscle force applied by the patient, or enable the rate of rotation of the rotary member to increase corresponding to the amount of muscle force applied by the patient.
2 . The device of claim 1 , wherein the rotary member is a wheel and the patient member is a pedal.
3 . The device of claim 1 , wherein the motor is an electric motor.
4 . The device of claim 1 , wherein the device has a pair of rotary members, each with a patient engagement member, and the patient engagement members are radially adjustable on the rotary members and axially adjustable relative to one another.
5 . The device of claim 1 , further comprising a computer processor in electrical communication with both the motor and a plurality of patient sensors.
6 . The device of claim 1 , further comprising a mount onto which the exercise and rehabilitation device is adjustably positionable to enable the device to be positioned relative to a patient.
7 . A rehabilitation and exercise device, comprising:
a rotary member mounted for rotary motion and having a patient engagement member operatively associated therewith;
a motor having a force output; and
a clutch having a linkage connecting the motor to the rotary member;
wherein the motor and the clutch are operable to:
(1) apply rotational force from the motor to the rotary member without requiring use of muscle power of a patient;
(2) disengage the motor is completely from the rotary member so that the rotary member is capable of free motion; or
(3) apply rotational resistance from the motor to the rotary member to resist muscle powered rotation of the rotary member with a selectable amount of resistance.
8 . The device of claim 7 , wherein the rotary member is a wheel and the patient member is a pedal.
9 . The device of claim 7 , wherein the motor is an electric motor.
10 . The device of claim 7 , wherein the device has a pair of rotary members, each with a patient engagement member, and the patient engagement members are radially adjustable on the rotary members and axially adjustable relative to one another.
11 . The device of claim 7 , further comprising a computer processor in electrical communication with both the motor and a plurality of patient sensors.
12 . The device of claim 7 , further comprising a mount onto which the exercise and rehabilitation device is adjustably positionable to enable the device to be positioned relative to a patient.