Thermal pumps with features

• US 8,257,414 B2
• Filed: 11/28/2006
• Issued: 09/04/2012
• Est. Priority Date: 11/28/2006
• Status: Active Grant

• Current Assignee: C2Dx, Inc.
• Original Assignee: Stryker Corporation
• Inventors: Kelner, William J., Stewart, Thomas P.
• Primary Examiner(s): Gibson, Roy
• Assistant Examiner(s): SMITH, KAITLYN ELIZABETH
• Application Number:
  US11/604,914
• Publication Number:
  US 20080125839A1
• Time in Patent Office: 2,107 Days
• Field of Search: 607/104
• US Class Current: 607/104
• CPC Class Codes: A61F 2007/0001 Body part
• CPC Class Codes: A61F 2007/0054 with a closed fluid circuit, e.g. hot water
• CPC Class Codes: A61F 2007/0295 for heating or cooling or use at more than one temperature
• CPC Class Codes: A61F 7/02 Compresses or poultices for effecting heating or cooling

Abstract

The present invention is directed to a thermal pump for controlling air bubbles, thermal therapy to allow the patient to perceive that the thermal therapy is constantly being applied, and ensure the appropriate amount of water flows through the thermal pump.

Claims

1. A thermal pump system comprising:

a pump container having a dry compartment that contains a motor, a wet compartment that contains a propeller, and a shaft system that interconnects the motor to the propeller;

the wet compartment has a water inlet;

the propeller pulls water from a water bath into the wet compartment through the water inlet and pushes the water into a conduit toward a heating block and to a patient application device;

the heating block has a heating pad and/or a cooling pad; and

a therapy management device that controls the thermal energy provided by the heating pad and/or the cooling pad to

(a) direct the water'"'"'s temperature toward a first predetermined temperature at a first rate that can be sensed by a patient when the patient application device is applied to the patient, wherein the first rate is more than 1.5 degrees Fahrenheit per minute,

(b) direct the water'"'"'s temperature toward a second predetermined temperature at a second rate that is not normally sensed by the patient when the patient application device is applied to the patient, wherein the second rate has a magnitude less than said first rate, and wherein

(i) if the first predetermined temperature is obtained by raising the water'"'"'s temperature then the second predetermined temperature is obtained by lowering the water'"'"'s temperature and

(ii) if the first predetermined temperature is obtained by lowering the water'"'"'s temperature then the second predetermined temperature is obtained by raising the water'"'"'s temperature; and

(c) repeat step (a).

2. The thermal pump system of claim 1 wherein the water inlet does not protrude away from the pump container.

3. The thermal pump system of claim 1 wherein the heating block has a heating pad that warms the water.

4. The thermal pump system of claim 1 wherein the heating block has a cooling pad that cools the water.

5. The thermal pump system of claim 1 wherein between step (a) and step (b), the heating block maintains the water'"'"'s temperature at the first predetermined temperature for a predetermined time frame.

6. The thermal pump system of claim 5 wherein the predetermined time frame ranges from 0 seconds to 10 minutes.

7. The thermal pump system of claim 5 wherein the difference between the first predetermined temperature and the second predetermined temperature ranges from 5 to 25 degrees Fahrenheit, and wherein the second rate is 0.01 to about 2.0 degrees Fahrenheit per minute.

8. The thermal pump system of claim 1 wherein between step (b) and step (c), the heating block maintains the water'"'"'s temperature at the second predetermined temperature for a predetermined time frame.

9. The thermal pump system of claim 1 wherein the shaft system is a single shaft.

10. The thermal pump system of claim 1 wherein the shaft system comprises a first shaft positioned exclusively in the dry compartment and having a first proximal end and a first distal end wherein the first proximal end connects to the motor and the first distal end (a) extends toward the propeller and (b) has a first magnet, and a second shaft positioned exclusively in the wet compartment and having a second proximal end and a second distal end wherein the second proximal end connects to the propeller and the second distal end (a) extends toward the motor, and (b) has a second magnet.

11. The thermal pump system of claim 1 wherein the difference between the first predetermined temperature and the second predetermined temperature ranges from 5 to 25 degrees Fahrenheit.

12. A thermal pump system comprising:

a pump container that contains a propeller that pushes water toward a heating block and to a patient application device;

the heating block has a heating pad and/or a cooling pad; and

a therapy management device that controls the thermal energy provided by the heating pad and/or the cooling pad to

(a) direct the water'"'"'s temperature toward a first predetermined temperature at a first rate that can be sensed by a patient when the patient application device is applied to the patient,

(b) direct the water'"'"'s temperature toward a second predetermined temperature at a second rate that is not normally sensed by the patient when the patient application device is applied to the patient, wherein the second rate is 0.01 to about 2.0 degrees Fahrenheit per minute and the second rate has a magnitude less than the first rate, and wherein

(i) if the first predetermined temperature is obtained by raising the water'"'"'s temperature then the second predetermined temperature is obtained by lowering the water'"'"'s temperature and

(ii) if the first predetermined temperature is obtained by lowering the water'"'"'s temperature then the second predetermined temperature is obtained by raising the water'"'"'s temperature; and

(c) repeat step (a).

13. The thermal pump system of claim 12 wherein the pump container has a dry compartment that contains a motor, a wet compartment that contains the propeller, and a shaft system that interconnects the motor to the propeller;

the wet compartment has a water inlet; and

the propeller pulls water from a water bath into the wet compartment through the water inlet and pushes the water into a conduit toward the heating block and to the patient application device.

14. The thermal pump system of claim 13 wherein the water inlet does not protrude away from the pump container.

15. The thermal pump system of claim 12 wherein the heating block has a heating pad that warms the water.

16. The thermal pump system of claim 12 wherein the heating block has a cooling pad that cools the water.

17. The thermal pump system of claim 12 wherein the first rate is more than 1.5 degrees Fahrenheit per minute

18. The thermal pump system of claim 12 wherein between step (a) and step (b), the heating block maintains the water'"'"'s temperature at the first predetermined temperature for a predetermined time frame.

19. The thermal pump system of claim 18 wherein the predetermined time frame ranges from 0 seconds to 10 minutes.

20. The thermal pump system of claim 12 wherein between step (b) and step (c), the heating block maintains the water'"'"'s temperature at the second predetermined temperature for a predetermined time frame.

21. The thermal pump system of claim 12 wherein the difference between the first predetermined temperature and the second predetermined temperature ranges from 5 to 25 degrees Fahrenheit.

22. A thermal pump system comprising:

a pump container that contains a propeller that pushes water toward a heating block and to a patient application device;

the heating block has a heating pad and/or a cooling pad; and

a therapy management device that controls the thermal energy provided by the heating pad and/or the cooling pad to

(a) direct the water'"'"'s temperature toward a first predetermined temperature at a first rate that can be sensed by a patient when the patient application device is applied to the patient, wherein the first rate is more than 1.5 degrees Fahrenheit per minute,

(b) direct the water'"'"'s temperature toward a second predetermined temperature at a second rate that is not normally sensed by the patient when the patient application device is applied to the patient, said second rate having a magnitude less than said first rate, wherein

(i) if the first predetermined temperature is obtained by raising the water'"'"'s temperature then the second predetermined temperature is obtained by lowering the water'"'"'s temperature and

(ii) if the first predetermined temperature is obtained by lowering the water'"'"'s temperature then the second predetermined temperature is obtained by raising the water'"'"'s temperature; and

(c) repeat step (a).

23. The thermal pump system of claim 22 wherein the heating block has a heating pad that warms the water.

24. The thermal pump system of claim 23 wherein between step (a) and step (b), the heating block maintains the water'"'"'s temperature at the first predetermined temperature for a predetermined time frame.

25. The thermal pump system of claim 24 wherein the pump container has a dry compartment that contains a motor, a wet compartment that contains the propeller, and a shaft system that interconnects the motor to the propeller;

the wet compartment has a water inlet; and

the propeller pulls water from a water bath into the wet compartment through the water inlet and pushes the water into a conduit toward the heating block and to the patient application device.

26. The thermal pump system of claim 25 wherein the water inlet does not protrude away from the pump container.

27. The thermal pump system of claim 24 wherein the predetermined time frame ranges from 0 seconds to 10 minutes.

28. The thermal pump system of claim 22 wherein the heating block has a cooling pad that cools the water.

29. The thermal pump system of claim 22 wherein between step (b) and step (c), the heating block maintains the water'"'"'s temperature at the second predetermined temperature for a predetermined time frame.