Continuous passive motion shoulder unit
First Claim
1. A portable device which can be worn by a user to impart continuous passive motion to the user'"'"'s shoulder, comprising:
- a base including a housing which engages an adjacent lateral portion of the user'"'"'s torso;
an arm support pivotally joined to the base comprising an upper arm support which engages an adjacent portion of the user'"'"'s upper arm, a lower arm support which engages an adjacent portion of the user'"'"'s lower arm, and a shaft, the upper arm support having a longitudinal axis and extending from the base to form an angle whereby the angle of the upper arm support relative to the base defines an angle of abduction corresponding to the degree of abduction of the user'"'"'s shoulder, the shaft being supported by and extending from the upper arm support along the longitudinal axis and being rotatable relative to the upper arm support about the longitudinal axis, the forearm support being pivotally mounted on the shaft to link the forearm support and the upper arm support in selectable positions and forming an angle of the forearm support relative to the base whereby the angle of the forearm support relative to the base defines an angle of rotation corresponding to the degree of rotation of the user'"'"'s shoulder;
a drive mechanism including an actuator operatively joined between the base and the arm support to cause the upper arm support to pivot relative to the base and to displace the angle of abduction and define a range of abduction when the drive mechanism is activated, the actuator being contained within the housing; and
a rigid link having first and second ends and operatively joined at the first end to the shaft and at the second end to the base to optionally cause the shaft and the forearm support to rotate about the longitudinal axis to displace the angle of rotation and define a range of rotation when the device mechanism is activated to displace the angle of abduction.
2 Assignments
0 Petitions
Accused Products
Abstract
A lightweight portable device is provided to impart continuous passive motion to a user'"'"'s shoulder. The device causes abduction and adduction and has the option of causing simultaneous rotation as well through use of a single actuator. The base of the device is curved to fit against a lateral portion of the user'"'"'s torso and the device is held in position by a harness. An upper arm support is pivotally connected to and extends laterally from the base. A linear actuator extends between and is linked to the upper arm support and the base to cause abduction and adduction of the arm. A forearm support which is pivotally connected to the upper arm support and is also angularly adjustable relative to the upper arm support is linked to the base to cause rotation of the forearm support as the upper arm support is pivoted. The range of rotation can be varied or eliminated. The degree and speed of abduction and adduction can also be varied. The device is contained in a housing having a chamber with an extendable, two-part cover so that the operating mechansim is concealed.
73 Citations
19 Claims
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1. A portable device which can be worn by a user to impart continuous passive motion to the user'"'"'s shoulder, comprising:
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a base including a housing which engages an adjacent lateral portion of the user'"'"'s torso; an arm support pivotally joined to the base comprising an upper arm support which engages an adjacent portion of the user'"'"'s upper arm, a lower arm support which engages an adjacent portion of the user'"'"'s lower arm, and a shaft, the upper arm support having a longitudinal axis and extending from the base to form an angle whereby the angle of the upper arm support relative to the base defines an angle of abduction corresponding to the degree of abduction of the user'"'"'s shoulder, the shaft being supported by and extending from the upper arm support along the longitudinal axis and being rotatable relative to the upper arm support about the longitudinal axis, the forearm support being pivotally mounted on the shaft to link the forearm support and the upper arm support in selectable positions and forming an angle of the forearm support relative to the base whereby the angle of the forearm support relative to the base defines an angle of rotation corresponding to the degree of rotation of the user'"'"'s shoulder; a drive mechanism including an actuator operatively joined between the base and the arm support to cause the upper arm support to pivot relative to the base and to displace the angle of abduction and define a range of abduction when the drive mechanism is activated, the actuator being contained within the housing; and a rigid link having first and second ends and operatively joined at the first end to the shaft and at the second end to the base to optionally cause the shaft and the forearm support to rotate about the longitudinal axis to displace the angle of rotation and define a range of rotation when the device mechanism is activated to displace the angle of abduction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification