Device for imparting continuous passive motion to human joints

• US 4,716,889 A
• Filed: 08/22/1985
• Issued: 01/05/1988
• Est. Priority Date: 10/23/1981
• Status: Expired due to Term

• Current Assignee: OrthoRehab, Inc.
• Original Assignee: Toronto Medical Corp (Capstone Therapeutics Corp.)
• Inventors: Saringer, John H.
• Primary Examiner(s): Apley, Richard J.
• Assistant Examiner(s): Welsh, J.
• Application Number:
  US06/768,518
• Time in Patent Office: 866 Days
• Field of Search: 128/25 R, 128/25 B, 128/26, 128/24 R, 128/51, 128/52
• US Class Current: 601/33
• CPC Class Codes: A61F 5/3738 Slings
• CPC Class Codes: A61H 1/02 Stretching or bending or torsioning apparatus for exercising
• CPC Class Codes: A61H 1/0259 moved by translation
• CPC Class Codes: A61H 1/0274 for the upper limbs
• CPC Class Codes: A61H 1/0288 Fingers
• CPC Class Codes: A61H 2201/1215 Rotary drive
• CPC Class Codes: A61H 2201/163 holding means therefor
• CPC Class Codes: A61H 2201/1638 Holding means therefor
• CPC Class Codes: A61H 2201/1671 rotational
• CPC Class Codes: A61H 2203/0406 Standing on the feet
• CPC Class Codes: Y10T 74/18648 Carriage surrounding, guided by, and primarily supported by member other than screw [e.g., linear guide, etc.]
• CPC Class Codes: Y10T 74/18688 Limit stop

Abstract

An apparatus for imparting back and forth motion in a slow rhythmic cycle for mobilizing a human joint. An elongated support is provided with a traveller mounted thereon for reciprocating linear movement relative thereto. The traveller is provided with a connector for operatively engaging a limb of the body adjacent to the joint to be mobilized. A reversible motor is provided for driving the traveller through a reciprocating linear stroke and for reversing the direction of travel of the traveller at any point in its path of travel in response to a sensed predetermined load.

Claims

1. A continuous passive motion apparatus for mobilizing a human joint, comprising,

an elongated support,

traveller means on the support for reciprocating linear movement relative thereto, and means connected to the traveller means for operatively engaging a limb of the body adjacent to a joint to be mobilized,

motor means for driving the traveller means back and forth through a reciprocating linear stroke in a slow rhythmic cycle;

and,

for reversing the direction of travel of the traveller means at any point in its path of travel in response to a predetermined load.

2. An actuator for imparting back and forth motion in a slow rhythmic cycle, comprising,

an elongated support,

traveller means on the support for reciprocating linear movement relative thereto provided with a connector for connecting to means for operatively engaging a limb of a body adjacent to a joint to be mobilized,

motor means for driving the traveller means,

transmission means acting between the motor means and the traveller means for driving the traveller means back and forth through a reciprocating linear stroke in a slow rhythmic cycle;

and,

for reversing the direction of travel of the traveller means at any point in its path of travel in response to a predetermined load.