High frequency cauterizing apparatus

• US 5,540,683 A
• Filed: 07/12/1994
• Issued: 07/30/1996
• Est. Priority Date: 11/08/1993
• Status: Expired due to Term

• Current Assignee: Olympus Optical Company Ltd. (Olympus Corporation)
• Original Assignee: Olympus Optical Company Ltd. (Olympus Corporation)
• Inventors: Hijii, Kazuya, Ichikawa, Yoshito
• Primary Examiner(s): Sykes, Angela D.
• Assistant Examiner(s): PEFFLEY, MICHAEL F
• Application Number:
  US08/273,910
• Time in Patent Office: 749 Days
• Field of Search: 606/1, 606/32-35, 606/38-42, 606/45-52, 604/20, 604/21
• US Class Current: 606/40
• CPC Class Codes: A61B 18/12 by passing a current through the tissue to be heated, e.g. high-frequency current
• CPC Class Codes: A61B 18/1206 Generators therefor
• CPC Class Codes: A61B 18/1233 with circuits for assuring patient safety
• CPC Class Codes: A61B 18/14 Probes or electrodes therefor
• CPC Class Codes: A61B 18/1402 Probes for open surgery
• CPC Class Codes: A61B 18/1492 having a flexible, catheter-like structure, e.g. for heart ablation A61B18/1477 takes precedence
• CPC Class Codes: A61B 2017/00482 with a code
• CPC Class Codes: A61B 2018/00178 Electrical connectors
• CPC Class Codes: A61B 2018/0066 without feedback, i.e. open loop control
• CPC Class Codes: A61B 2018/00988 Means for storing information, e.g. calibration constants, or for preventing excessive use, e.g. usage, service life counter
• CPC Class Codes: A61B 2018/141 Snare

Abstract

A high-frequency cauterizing apparatus comprises a high-frequency power supply device, having a plurality of high-frequency output modes, for generating a high-frequency current, at least one medical treatment instrument to be connected to the high-frequency power supply device, a detector for detecting connection of the medical treatment instrument to the high-frequency power supply device, a control signal generator for identifying the type of the medical treatment instrument on the basis of a detection signal from the detector and generating a control signal, and a controller for controlling a high-frequency output from the high-frequency power supply device on the basis of the control signal generated from the control signal generator.

Claims

1. A high-frequency cauterizing apparatus comprising:

a high-frequency power supply device, having a plurality of high-frequency output modes, for generating a high-frequency current;

at least one medical treatment instrument to be connected to said high-frequency power supply device;

said at least one medical treatment instrument to be connected to said high-frequency power supply device comprising an endoscope and a high-frequency medical treatment instrument carried by said endoscope, said high-frequency medical treatment instrument having two electrodes, said two electrodes of said high-frequency medical treatment instrument including;

a living body-side electrode for performing a cauterizing treatment for a living body tissue by a high-frequency current produced by said high-frequency power supply device, said living body-side electrode being arranged to be put in contacts with the living body, and

a medical instrument-side electrode arranged to be put in contact with an affected part of a living body;

detection means for detecting connection of said medical treatment instrument to said high-frequency power supply device;

control signal generating means for identifying the type of the medical treatment instrument responsive to a detection signal from said detection means, and for generating a control signal; and

control means for controlling a high-frequency output from said high-frequency power supply device on the basis of said control signal generated from said control signal generating means;

said endoscope including a leak current feedback cord electrically connected to a body portion of said endoscope; and

said high-frequency power supply device including means for equalizing a potential of the living body-side electrode of said high-frequency medical treatment instrument to that of the body portion of said endoscope via said leak current feedback cord.

2. The apparatus according to claim 1, wherein said detection means is provided at a connection unit between said high-frequency power supply device and said high-frequency medical treatment instrument.

3. The apparatus according to claim 2, wherein said detection means comprises:

an identifying connector provided on said high-frequency medical treatment instrument and having an identification key representing predetermined high-frequency characteristics of the high-frequency medical treatment instrument;

an electrode connector provided at an end portion of a connection cable connected electrically to said high-frequency power supply device and having an identification key groove in which said identification key of said identifying connector is to be inserted; and

a detection unit for detecting said predetermined high-frequency characteristics of said high-frequency medical treatment instrument by electrically detecting a connection state between said identifying connector and said electrode connector.

4. The apparatus according to claim 3, wherein said detection unit includes two electrical contact points which are provided within said identification key groove and which are electrically connected to each other by said identification key of said identifying connector when said identification key is inserted into the identification key groove.

5. The apparatus according to claim 2, wherein said detection means comprises:

an identifying connector provided on an end portion of a connection member mechanically connected to said high-frequency medical treatment instrument and having an identification pin representing predetermined high-frequency characteristics of the high-frequency medical treatment instrument;

an electrode connector connected electrically to said high-frequency power supply device and having an identification hole in which said identifying pin of said identifying connector is to be inserted; and

a detection unit for detecting said predetermined high-frequency characteristics of said high-frequency medical treatment instrument by electrically detecting a connection state between said identifying connector and said electrode connector.

6. The apparatus according to claim 5, wherein said detection unit includes two electrical contact points which are provided within said identification hole of said electrode connector and which are electrically connected to each other by said identification pin of said identifying connector when said idenification pin is inserted into the identification hole.

7. The apparatus according to claim 6, wherein said high-frequency power supply device includes a spray coagulation mode for performing spray coagulation capable of performing blood coagulation while generating a high voltage and electric discharge, while said instrument-side electrode is near but not in contact with the affected part of the living body.

8. The apparatus according to claim 1, wherein:

said detection means includes a detection unit for detecting connection of said leak current feedback cord; and

said control means controls an output in at least a spray coagulation mode among said plurality of high-frequency output modes of said high-frequency power supply device, on the basis of a detection signal from said detection unit for detecting the connection of said leak current feedback cord.

9. The apparatus according to claim 8, wherein said control means forcibly prohibits use of the spray coagulation mode on the basis of the detection signal from said detection unit for detecting the connection of said leak current feedback cord.

10. The apparatus according to claim 8, wherein said control means forcibly prohibits use of the spray coagulation mode on the basis of the detection signal from said detection unit for detecting the connection of said leak current feedback cord, and lowers maximum output values in the other high-frequency output modes.

11. The apparatus according to claim 8, wherein said control means forcibly prohibits use of the spray coagulation mode on the basis of the detection signal from said detection unit for detecting the connection of said leak current feedback cord, and sets to a coagulation mode in which blood coagulation is performed at a lower voltage than in the spray coagulation.

12. A high-frequency cauterizing apparatus comprising:

a high-frequency power supply device, having a plurality of high-frequency output modes including a spray coagulation mode for performing spray coagulation capable of performing blood coagulation while generating a high voltage and electric discharge, for generating a high-frequency current;

a high-frequency medical treatment instrument, connected to said high-frequency power supply device, and comprising a living body-side electrode arranged to be put in contact with a living body and a medical instrument-side electrode arranged to be put in contact with an affected part of the living body;

an endoscope connected to said high-frequency power supply device and carrying said high-frequency medical treatment instrument;

a leak current feedback cord, electrically connected to a body portion of the endoscope, for connecting the body portion of the endoscope and said high-frequency power supply device;

means for equalizing a potential of the body portion of the endoscope to that of the living body-side electrode of said medical treatment instrument via said leak current feedback cord;

detection means for detecting a connection of said leak current feedback cord to said high-frequency power supply device; and

control means for controlling an output in at least a spray coagulation mode among said plurality of high-frequency output modes of said high-frequency power supply device, on the basis of a detection signal from said detection means for detecting the connection of said leak current feedback cord to said high-frequency power supply device.

13. A high-frequency cauterizing apparatus comprising:

a high-frequency power supply device, having a plurality of high-frequency output modes, for generating a high-frequency current;

at least one medical treatment instrument to be connected to said high-frequency power supply device;

said at least one medical treatment instrument to be connected to said high-frequency power supply device comprising an endoscope and a high-frequency medical treatment instrument carried by said endoscope, said high-frequency medical treatment instrument having two electrodes,

a living body-side electrode for performing a cauterizing treatment for a living body tissue by a high-frequency current produced by said high-frequency power supply device, said living body-side electrode being arranged to be put in contact with the living body, and

a medical instrument-side electrode to be put in contact with an affected part of a living body;

detection means for detecting mechanical connection of said medical treatment instrument to said high-frequency power supply device;

control signal generating means for identifying the type of the medical treatment instrument responsive to a detection signal from said detection means, and for generating a control signal; and

control means for controlling a high-frequency output from said high-frequency power supply device on the basis of said control signal generated from said control signal generating means; and

said endoscope including a leak current feedback cord electrically connected to a body portion of said endoscope; and

said high-frequency power supply device including means for equalizing a potential of the living body-side electrode of said high-frequency medical treatment instrument to that of the body portion of said endoscope via said leak current feedback cord.

14. The apparatus according to claim 13, wherein said high-frequency power supply device has a spray coagulation mode for performing spray coagulation capable of performing blood coagulation while generating a high voltage and electric discharge, while said instrument-side electrode is near but not in contact with the affected part of the living body.

15. The apparatus according to claim 14, wherein;

said detection means includes a detection unit for detecting connection of said leak current feedback cord; and

said control means controls an output in at least a spray coagulation mode among said plurality of high-frequency output modes of said high-frequency power supply device, on the basis of a detection signal from said detection unit for detecting the connection of said leak current feedback cord.

16. The apparatus according to claim 15, wherein said control means forcibly prohibits use of the spray coagulation mode on the basis of the detection signal from said detection unit for detecting the connection of said leak current feedback cord.

17. The apparatus according to claim 15, wherein said control means forcibly prohibits use of the spray coagulation mode on the basis of the detection signal from said detection unit for detecting the connection of said leak current feedback cord, and lowers maximum output values in the other high-frequency output modes.

18. The apparatus according to claim 15, wherein said control means forcibly prohibits use of the spray coagulation mode on the basis of the detection signal from said detection unit for detecting the connection of said leak current feedback cord, and changes the spray coagulation mode to a coagulation mode in which blood coagulation is performed at a lower voltage than in the spray coagulation.