Heat-emitting treatment device

• US 7,108,694 B2
• Filed: 11/05/2003
• Issued: 09/19/2006
• Est. Priority Date: 11/08/2002
• Status: Active Grant

• Current Assignee: Olympus Corporation
• Original Assignee: Olympus Corporation
• Inventors: Miura, Keisuke, Hareyama, Norihiko
• Primary Examiner(s): Peffley, Michael
• Assistant Examiner(s): Toy, Alex B.
• Application Number:
  US10/701,927
• Publication Number:
  US 20040092923A1
• Time in Patent Office: 1,049 Days
• Field of Search: 606 27- 31
• US Class Current: 606/31
• CPC Class Codes: A61B 18/085 Forceps, scissors
• CPC Class Codes: A61B 2017/00084 Temperature
• CPC Class Codes: A61B 2017/00132 Setting operation time of a device A61B2017/00123 takes precedence

Abstract

Treatment equipment for treating body tissue comprises heater elements which are heated by electric power supplied from an electric power supply circuit, and the heat of the heater elements is provided to the body tissue through a heat transmitting member. The state of thermal connection between the heater elements and the heat transmitting member is determined by a determining device for determining the thermal connection state.

Claims

1. A heat-emitting treatment device comprising:

heater elements for emitting heat to treat body tissue;

an electric power supplying circuit for supplying electric power so that the heater elements emit heat;

a heat-transmitting member connected with the heater elements so as to provide the heat from the heater elements, heated by supplying electric power thereto, to the body tissue; and

a determining device for determining the heat connection state of the heater elements and the heat-transmitting member;

wherein the determining device is configured for detecting an amount of change in a temperature during a predetermined period of time of the heater elements, determining the heat connection state of the heater elements and the heat transmitting member, and comparing the detected amount of change in a temperature and a preset threshold value.

2. A heat-emitting treatment device according to claim 1, further comprising a control circuit for controlling the electric power supplying circuit, based on the determination results of the determining device.

3. A heat-emitting treatment device according to claim 1, further comprising a notification circuit for notifying, based on the determination results of the determining device.

4. A heat-emitting treatment device according to claim 1, wherein the determining device detects the amount of change in the temperature during a predetermined period of time of the heater elements based on the electric power supplied from the electric power supplying circuit to the heater elements.

5. A heat-emitting treatment device according to claim 1, further comprising a conditions determining device for determining whether or not conditions enabling determination of the connection state are satisfied.

6. A heat-emitting treatment device according to claim 4, wherein the determining device determines the thermal connection state between the heater elements and the heat-transmitting member, by comparing a value of the electric power supplied to the heater element with a preset threshold value.

7. A heat-emitting treatment device according to claim 4, wherein the determining device determines the thermal connection state between the heater elements and the heat-transmitting member, by comparing a value of the electric power supplied to the heater element following a predetermined time period elapsing from starting output from the electric power supplying circuit, with a preset threshold value.

8. A heat-emitting treatment device according to claim 1, wherein the determining device determines the thermal connection state between the heater elements and the heat-transmitting member, based on the change in temperature of the heater elements from the start of output from the electric power supplying circuit.

9. A heat-emitting treatment device according to claim 1, wherein the determining device determines the thermal connection state between the heater elements and the heat-transmitting member, based on the change in temperature of the heater elements after ending output from the electric power supplying circuit.

10. A heat-emitting treatment device according to claim 1, wherein the determining device determines the thermal connection state between the heater elements and the heat-transmitting member, based on the rate of change in temperature among the heater elements.

11. A heat-emitting treatment device according to claim 1, wherein the determining device detects the amount of change in the temperature during a predetermined period of time of the heater elements based on the change in resistance of the heater elements.

12. A heat-emitting treatment device according to claim 2, wherein, in the event that the determination results from the determining device show that the connecting state is low, the control circuit effects control such that the electric power supplied from the electric power supply circuit is increased.

13. A heat-emitting treatment device according to claim 1, further comprising a control circuit for determining the temperature of the heater elements before determining the connection state with the determining device.

14. A heat-emitting treatment device according to claim 13, wherein the control circuit determines the temperature under a weak electric power supply.

15. A heat-emitting treatment device according to claim 1, wherein the heater elements and heat transmitting member are provided on a treatment instrument, with a connector of the treatment instrument comprising a detection circuit for detecting the connection or non-connection to a connector receptacle of the main device unit where the electric power supply circuit is provided.

16. A heat-emitting treatment device according to claim 15, wherein determining actions of the connection state by the determining device are activated by the results of detecting connection by the detecting circuit.

17. A control method for a heat-emitting treatment device comprising heater elements for emitting heat to treat body tissue and a heat-transmitting member for transmitting heat from the heater elements to body tissue, the method comprising:

an electric power supplying step for supplying electric power so that the heater elements emit heat;

a determining step for detecting an amount of change in a temperature during a predetermined period of time of the heater elements and determining the connection state of the heater elements and the heat-transmitting member by comparing the detected amount of change in a temperature and a preset threshold value; and

an electric power changing step for changing the electric power supplied, based on the determination results of the determining step.

18. A control method for a heat-emitting treatment device according to claim 17, wherein in the determining step, a thermal connection state between the heater elements and the heat-transmitting member is determined based on the electric power supplied to heat the heater elements.

19. A control method for a heat-emitting treatment device according to claim 18, wherein in the determining step, a thermal connection state between the heater elements and the heat-transmitting member is determined, based on the change in temperature of the heater elements from the start of the electric power supplying to heat the heater elements.

20. A control method for a heat-emitting treatment device according to claim 18, wherein in the determining step, a thermal connection state between the heater elements and the heat-transmitting member is determined, based on the change in temperature of the heater elements after ending of the electric power supplying to heat the heater elements.

21. A control method for a heat-emitting treatment device according to claim 17, wherein in the determining step, a thermal connection state between the heater elements and the heat-transmitting member is determined, based on the change in resistance of the heater elements.

22. A control method for a heat-emitting treatment device comprising heater elements for emitting heat to treat body tissue and a heat-transmitting member for transmitting heat from the heater elements to body tissue, the method comprising:

an electric power supplying step for supplying electric power so that the heater elements emit heat;

a determining step for detecting an amount of change in a temperature during a predetermined period of time of the heater elements and determining the connection state of the heater elements and the heat-transmitting member by comparing the detected amount of change in a temperature and a preset threshold value; and

a notifying step for notifying, based on the determination results of the determining step.

23. A control method for a heat-emitting treatment device according to claim 22, wherein in the determining step, a thermal connection state between the heater elements and the heat-transmitting member is determined based on the electric power supplied to heat the heater elements.

24. A control method for a heat-emitting treatment device according to claim 23, wherein in the determining step, a thermal connection state between the heater elements and the heat-transmitting member is determined, based on the change in temperature of the heater elements from the start of the electric power supplying to heat the heater elements.

25. A control method for a heat-emitting treatment device according to claim 23, wherein in the determining step, a thermal connection state between the heater elements and the heat-transmitting member is determined, based on the change in temperature of the heater elements after ending of the electric power supplying to heat the heater elements.

26. A control method for a heat-emitting treatment device according to claim 22, wherein in the determining step, a thermal connection state between the heater elements and the heat-transmitting member is determined, based on the change in resistance of the heater elements.

27. A program storage device readable by a machine, tangibly embodying a program of instructions executable by the machine to perform method steps for controlling a heat-emitting treatment device comprising heater elements for emitting heat to treat body tissue and a heat-transmitting member for transmitting heat from the heater elements to body tissue, method steps including the steps of:

supplying electric power so that the heater elements emit heat;

detecting an amount of change in a temperature during a predetermined period of time of the heater elements; and

determining the connection state of the heater elements and the heat-transmitting member by comparing the detected amount of change in a temperature and a preset threshold value.

28. The program storage device readable by a machine, tangibly embodying a program of instructions according to claim 27, further including the step of changing the electric power supplied, based on the determination results of the determining step.

29. The program storage device readable by a machine, tangibly embodying a program of instructions according to claim 27, further including the step of notifying, based on the determination results of the determining step.