Neurosurgical device for thermal therapy

• US 6,648,907 B2
• Filed: 10/04/2001
• Issued: 11/18/2003
• Est. Priority Date: 10/05/2000
• Status: Expired due to Fees

• Current Assignee: Seacoast Technologies, Inc.
• Original Assignee: Seacoast Technologies, Inc.
• Inventors: Sachs, Dan, Larnard, Donald J.
• Primary Examiner(s): Cohen, Lee
• Assistant Examiner(s): Johnson, III, Henry M
• Application Number:
  US09/971,072
• Publication Number:
  US 20020116040A1
• Time in Patent Office: 775 Days
• Field of Search: 607/105, 607/110, 607/112, 607/113, 607/96, 607/108
• US Class Current: 607/105
• CPC Class Codes: A61B 2017/00084 Temperature
• CPC Class Codes: A61F 2007/0054 with a closed fluid circuit, e.g. hot water
• CPC Class Codes: A61F 2007/0056 for cooling
• CPC Class Codes: A61F 2007/0075 using a Peltier element, e.g. near the spot to be heated or cooled
• CPC Class Codes: A61F 2007/101 for cooling organs in the body before or during surgery
• CPC Class Codes: A61F 2007/126 for invasive application, e.g. for introducing into blood vessels
• CPC Class Codes: A61F 7/12 Devices for heating or cooling internal body cavities
• CPC Class Codes: A61F 7/123 using a flexible balloon containing the thermal element

Abstract

A device for thermally affecting tissue of a patient includes a housing defining an interior volume that is at least partially insertable into an exterior opening in a patient. A thermal member positioned within the interior volume of the housing includes a thermal input side and a thermal output side to impart a thermal change to the tissue.

Claims

1. A device for thermally affecting tissue of a patient, comprising:

a housing, the housing defining an interior volume and being at least partially insertable into an exterior opening in the patient;

a thermal member having a thermal input side and a thermal output side, at least a portion of the thermal member being positioned within the interior volume, one of the thermal input side and the thermal output side being arrangable to provide a temperature different than the other of the thermal input side and the thermal output side, the thermal input side imparting a thermal change to the tissue; and

a contact member being in thermal communication with the thermal input side of the thermal member and being in thermal communication with the tissue, wherein the contact member includes an access port, the access port being adapted to be in communication with the tissue.

2. The device of claim 1, further comprising a thermal fluid circulation member, the thermal fluid circulation member provided to circulate thermal fluid across the thermal output side of the thermal member.

4. The device according to claim 1, wherein the contact member is adapted to directly contact tissue to be treated.

5. The device according to claim 1, further comprising a membrane, the membrane being disposed on and being in thermal communication with the contact member.

6. The device according to claim 1, wherein the thermal member removes heat energy from the contact member via the thermal input side and radiates heat energy via the thermal output side.

7. The device according to claim 6, wherein the thermal member is a thermo-electric cooler.

8. The device according to claim 6, further comprising a thermal sink, the thermal sink being in thermal communication with the thermal output side of the thermal member and being operable to radiate heat energy.

9. The device of claim 1, wherein the housing is substantially cylindrical in shape.

10. The device according to claim 9, wherein the housing includes a distal end portion at least partially insertable into the opening, at least a part of the distal end portion being threaded.

3. The device according to claim 3, wherein the thermal fluid circulation member is a fan and the thermal fluid is air.

11. A device for thermally affecting tissue of a patient, comprising:

a housing, the housing defining an interior volume and being at least partially insertable into an exterior opening in the patient; and

a thermal member having a thermal input side and a thermal output side, at least a portion of the thermal member being positioned within the interior volume, one of the thermal input side and the thermal output side being arrangable to provide a temperature different than the other of the thermal input side and the thermal output side, the thermal input side imparting a thermal change to the tissue, wherein the thermal member is adapted to directly contact tissue to be treated.

12. A device for thermally affecting tissue of a patient, comprising:

a housing, the housing defining an interior volume and being at least partially insertable into an exterior opening in the patient;

a thermal member having a thermal input side and a thermal output side, at least a portion of the thermal member being positioned within the interior volume, one of the thermal input side and the thermal output side being arrangable to provide a temperature different than the other of the thermal input side and the thermal output side, the thermal input side imparting a thermal change to the tissue; and

a thermal fluid circulation member, the thermal fluid circulation member provided to circulate thermal fluid across the thermal output side of the thermal member, wherein the thermal fluid circulation member is a pump and the thermal fluid is a liquid.

13. The device of claim 12, further comprising, a contact member being in thermal communication with the thermal input side of the thermal member and being in thermal communication with the tissue.

14. The device according to claim 13, wherein the contact member includes an access port, the access port being adapted to be in communication with the tissue.

15. The device according to claim 12, further comprising a membrane, the membrane being disposed on and being in thermal communication with the thermal member.

16. The device according to claim 12, wherein the thermal fluid circulation member is a fan and the thermal fluid is air, wherein the fan circulates air across a thermal sink to dissipate heat energy.

17. A device for thermally affecting tissue of a patient, comprising:

a housing, the housing defining an interior volume and being at least partially insertable into an exterior opening in the patient, wherein the housing includes a set screw opening and wherein the thermal member is slidable within the housing, and wherein the device further includes a set screw insertable into the set screw opening, the set screw being adjustable to lock the thermal member at a desired position relative to the housing; and

a thermal member having a thermal input side and a thermal output side, at least a portion of the thermal member being positioned within the interior volume, one of the thermal input side and the thermal output side being arrangable to provide a temperature different than the other of the thermal input side and the thermal output side, the thermal input side imparting a thermal change to the tissue.

18. A device for thermally affecting tissue, comprising:

a thermal member having a thermal input side and a thermal output side;

a thermal cartridge, the thermal cartridge having a cartridge wall defining an interior surface for receiving the thermal member; and

an insert housing, the insert housing having an insert wall defining an inner volume configured to slidably receive the thermal cartridge and the insert housing being configured to fit within an opening in a patient.

19. The device according to claim 18, further comprising a longitudinal slot attached to the cartridge wall of the thermal cartridge and a longitudinal groove provided in the insert wall of the insert housing, the longitudinal slot configured to slidably engage the longitudinal groove when the thermal cartridge is inserted in the insert housing.

20. The device according to claim 18, further comprising a set screw provided in communication with the inset housing and the thermal cartridge.

21. The device according to claim 18, further comprising a radial slot attached to the cartridge wall of the thermal cartridge and a radial groove provided in the insert wall of the insert housing, the radial slot configured to slidably engage the radial groove when the thermal cartridge is inserted in the insert housing.

22. The device according to claim 18, further comprising a contact member in thermal communication with the thermal input side of the thermal member.

23. The device according to claim 22, wherein the contact member has a concave contact surface.

24. The device according to claim 18, further comprising a thermal dissipation member in thermal communication with the thermal member.