CONTINUOUS PASSIVE MOTION DEVICE

• US 20150366736A1
• Filed: 06/18/2015
• Published: 12/24/2015
• Est. Priority Date: 06/18/2014
• Status: Active Grant

• Current Assignee: Ossur hf
• Original Assignee: Ossur hf
• Inventors: CHETLAPALLI, Janaki Ram-srinivasaRao, ROMO, Harry Duane
• Granted Patent: US 10,182,957 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61H 1/0214 by rotating cycling movement
• CPC Class Codes: A61H 1/0237 for the lower limbs
• CPC Class Codes: A61H 1/024 Knee A61H1/0255 takes precedence
• CPC Class Codes: A61H 1/0244 Hip A61H1/0255 takes precedence
• CPC Class Codes: A61H 2201/1215 Rotary drive
• CPC Class Codes: A61H 2201/1642 Holding means therefor
• CPC Class Codes: A61H 2201/1664 linear
• CPC Class Codes: A61H 2201/1671 rotational
• CPC Class Codes: A61H 2201/5058 Sensors or detectors
• CPC Class Codes: A61H 2201/5097 wireless

Abstract

A CPM device includes a support structure arranged to be removably attached to an articulating brace supporting a limb and a joint of a user. One or more rotating members are rotatably connected to the support structure. The rotating members are adapted to contact and roll on an underlying surface that is separate from the CPM device. At least one motor is arranged to apply a torque to the rotating members such that the rotating members roll on the underlying surface. The rolling of the rotating members on the underlying surface causes the support structure to translate over the underlying surface, which, in turn, conveys a bending force to the joint.

Claims

1. A continuous passive motion (“

CPM”

) device comprising;

a support structure arranged to be removably attached to an articulating brace supporting a limb and a joint of a user;

one or more rotating members rotatably connected to the support structure, the one or more rotating members being adapted for contacting and rolling on an underlying surface separate from the CPM device;

at least one motor arranged to apply a torque to the one or more rotating members such that the one or more rotating members roll on the underlying surface, wherein the rolling of the one or more rotating members on the underlying surface causes the support structure to translate over the underlying surface and conveys a bending force to the joint.

2. The CPM device of claim 1, wherein the support structure is removably attached to the articulating brace via a foot support member engaging a top surface of the support structure.

3. The CPM device of claim 1, wherein the articulating brace includes an upper leg support, a lower leg support, and a hinge assembly pivotally connecting the upper and lower leg supports, the lower leg support being operatively attached to the support structure.

4. The CPM device of claim 3, wherein the rolling of the one or more rotating members on the underlying surface varies an angle defined between the upper leg support and the lower leg support.

5. The CPM device of claim 3, wherein the rolling of the one or more rotating members in a first direction causes the support structure to move away from the user until the articulating brace reaches an extension limit.

6. The CPM device of claim 5, wherein the extension limit is defined by one or more operating parameters of the at least one motor.

7. The CPM device of claim 5, wherein the extension limit is defined by the articulating brace.

8. The CPM device of claim 5, wherein the rolling of the one or more rotating members in a second direction opposite the first direction causes the support structure to move toward the user until the articulating brace reaches a flexion limit.

9. The CPM device of claim 1, further comprising a foot support member engaging the support structure and connectable to a lower end portion of the articulating brace.

11. The CPM device of claim 9, wherein the foot support member defines a pair of slots arranged to receive the lower end portion of the articulating brace.

12. The CPM device of claim 1, wherein the underlying surface comprises a bed, a couch, a mat, a floor surface or a ground surface.

13. The CPM device of claim 1, further comprising a control system operatively connected to the at least one motor, and one or more sensors in communication with the control system.

14. The CPM device of claim 13, further comprising a remote controller in communication with the control system, and arranged to transmit user input to the control system.

15. The CPM device of claim 14, wherein the one or more sensors provide position information associated with the limb of the user to the control system.

10. The CPM device of 9, wherein a top of the support structure defines a foot rest and the foot support is removably positioned in the foot rest.

16. A continuous passive motion (“

CPM”

) device comprising;

a support structure adapted to support a limb and a joint of a user;

one or more rotating members rotatably connected to the support structure, the one or more rotating members being adapted for contacting and rolling on an underlying surface separate from the CPM device;

at least one motor arranged to apply a torque to the one or more rotating members such that the one or more rotating members roll on the underlying surface, wherein the rolling of the one or more rotating members on the underlying surface causes the support structure to translate over the underlying surface and conveys a bending force to the joint.

17. The CPM device of claim 16, further comprising an articulating brace removably attached to the support structure, and arranged to support a limb and a joint of a user.

18. The CPM device of claim 17, wherein the at least one motor is connected to the articulating brace.

19. The CPM device of claim 17, wherein the rolling of the one or more rotating members in a first direction causes the support structure to move away from the user until the articulating brace reaches an extension limit.

20. A continuous passive motion (“

CPM”

) system comprising;

an articulating brace including an upper leg support, a lower leg support, and a hinge assembly pivotally connecting the upper leg support and the lower leg support, the articulating brace adapted to receive and support a limb and a joint of a user; and

a CPM device removably attached to a lower end portion of the lower leg support, the CPM device comprising;

a support structure;

one or more rotating members rotatably connected to the support structure, the one or more rotating members adapted for contacting and rolling on an underlying surface separate from the CPM device;

at least one motor arranged to apply a torque to the one or more rotating members such that the one or more rotating members roll on the underlying surface, wherein the rolling of the one or more rotating members on the underlying surface causes the support structure to translate over the underlying surface and conveys a bending force to the joint.