High frequency treatment apparatus

• US 6,383,183 B1
• Filed: 04/07/1999
• Issued: 05/07/2002
• Est. Priority Date: 04/09/1998
• Status: Active Grant

• Current Assignee: Olympus Optical Corporation Limited (Olympus Corporation)
• Original Assignee: Olympus Optical Corporation Limited (Olympus Corporation)
• Inventors: Takahashi, Hiroyuki, Matsumoto, Hiroaki, Yamauchi, Kouji, Kikuchi, Yasuhiko, Hijii, Kazuya, Kogasaka, Takahiro, Nakamura, Takeaki, Tonomura, Masatoshi, Ohyama, Masahide, Yoshimine, Hideto, Sekino, Naomi, Nakada, Akio
• Primary Examiner(s): GIBSON, ROY DEAN
• Application Number:
  US09/288,579
• Time in Patent Office: 1,126 Days
• Field of Search: 606/32, 606/38-42, 606/45-50, 606/34, 606/37, 607/98, 607/101, 607/102, 607/115, 607/116
• US Class Current: 606/34
• CPC Class Codes: A61B 18/1206 Generators therefor
• CPC Class Codes: A61B 18/1477 Needle-like probes
• CPC Class Codes: A61B 18/1485 having a short rigid shaft for accessing the inner body through natural openings
• CPC Class Codes: A61B 2018/00547 Prostate
• CPC Class Codes: A61B 2018/00577 Ablation
• CPC Class Codes: A61B 2018/0066 without feedback, i.e. open loop control
• CPC Class Codes: A61B 2018/00666 using a threshold value
• CPC Class Codes: A61B 2018/00702 Power or energy
• CPC Class Codes: A61B 2018/00779 Power or energy
• CPC Class Codes: A61B 2018/00791 Temperature
• CPC Class Codes: A61B 2018/00875 Resistance or impedance
• CPC Class Codes: A61B 2018/1425 Needle

Abstract

A high frequency treatment apparatus of the present invention comprises a high frequency generation section for supplying high frequency power, a control section, which is connected to the high frequency generation section, and which controls output of the high frequency generation section, having a first control mode in which the maximal output value of high frequency power supplied from the high frequency generation section is confined to be equal to or less than a first predetermined value and a second control mode in which the maximal output value of high frequency power supplied from the high frequency generation section is confined to be equal to or less than a second predetermined value which is less than the first predetermined value, a treatment tool, which is connected to the high frequency generation section, and which performs a treatment of a diseased part by supplying high frequency power from the high frequency generation section controlled by the control section to the diseased part, and a control mode setting section, which is connected to the control section, for selecting one of the first and second control modes.

Claims

1. A high frequency treatment apparatus comprising:

a high frequency generation section which supplies high frequency power;

a control section which is connected to the high frequency generation section, and which controls output of the high frequency generation section, said control section having;

(i) a first control mode in which the maximal output value of high frequency power supplied from the high frequency generation section is confined to be equal to or less than a first predetermined value, and (ii) a second control mode in which the maximal output value of high frequency power supplied from the high frequency generation section is confined to be equal to or less than a second predetermined value which is less than the first predetermined value;

a treatment tool which is connected to the high frequency generation section, and which performs a treatment of diseased tissue by supplying high frequency power from the high frequency generation section controlled by the control section to the diseased tissue; and

a control mode setting section which is connected to the control section, and which sets one of the first and second control modes;

wherein the first control mode is a high-power mode for performing coagulating and cutting operations, and the second control mode is a low-power mode for performing an ablating operation;

wherein the treatment tool has a plurality of electrodes, to which power is supplied from the high frequency generation section, and by which paracentesis into the diseased tissue is performed;

wherein the control section supplies power from the high frequency generation section to at least one of the plurality of electrodes, and at the same time stops supplying power to at least one other of the plurality of electrodes; and

wherein each of the electrodes has a fore-end which is forked so as to have two needle-like portions.

2. A high frequency treatment apparatus according to claim 6, wherein:

the high frequency generation section supplies a first high frequency power and a second high frequency power whose maximal output power value is less than that of the first high frequency power, and

the control section causes the high frequency generation section to supply the first high frequency power to the treatment tool in the first control mode, and to supply the second high frequency power to the treatment tool in the second control mode.

3. A high frequency treatment apparatus according to claim 1, wherein:

the control section forcibly stops output of the high frequency generation section after a predetermined time elapses in the first control mode.

4. A high frequency treatment apparatus according to claim 1, wherein:

the high frequency generation section has a plurality of output terminals and the electrodes are respectively connected to the output terminals, and

the high frequency generation section supplies power to at least one of the output terminals, and at the same time stops supplying power to at least one other of the output terminals under control of the control section.

5. A high frequency treatment apparatus according to claim 1, wherein:

the control section sequentially supplies power from the high frequency generation section to the electrodes.

6. A high frequency treatment apparatus according to claim 1, further comprising:

a detection section which detects a temperature of a peripheral portion of the diseased tissue or biogenic information which has a correlation with the temperature of the diseased tissue, and

wherein the control section controls output of the high frequency generation section based on detection information from the detection section, and alternately performs power supply to one of the electrodes from the high frequency generation section and reception of detection information input from the detection section.

7. A high frequency treatment apparatus comprising:

a high frequency generation section which supplies high frequency power;

a control section which is connected to the high frequency generation section, and which controls output of the high frequency generation section, said control section having;

(i) a first control mode in which the maximal output value of high frequency power supplied from the high frequency generation section is confined to be equal to or less than a first predetermined value, and (ii) a second control mode in which the maximal output value of high frequency power supplied from the high frequency generation section is confined to be equal to or less than a second predetermined value which is less than the first predetermined value;

a treatment tool which is connected to the high frequency generation section, and which performs a treatment of diseased tissue by supplying high frequency power from the high frequency generation section controlled by the control section to the diseased tissue; and

a control mode setting section which is connected to the control section, and which sets one of the first and second control modes;

wherein the first control mode is a high-power mode for performing coagulating and cutting operations, and the second control mode is a low-power mode for performing an ablating operation; and

wherein the treatment tool comprises;

an insertion section which can be inserted into a biogenic lumen, and which has at least one channel which extends along a lengthwise direction of the insertion section;

a sheath which can be inserted through at least one of said at least one channel of the insertion section;

a first electrode which is provided at a fore-end of the sheath in an exposed manner, and which can be supplied with power from the high frequency generation section;

a second electrode which is provided along an outer periphery of a fore-end portion of the insertion section, and which along with the first electrode is adapted to have a high frequency current supplied therebetween; and

guiding means for guiding the sheath out of the channel through which the sheath is inserted at a predetermined angle to a lengthwise central axis of the insertion section, wherein the guiding means communicates with said channel and has a hole extending through the outer periphery of the fore-end portion of the insertion section where the second electrode is provided, so that the first electrode protrudes from said channel through the hole at the predetermined angle.

8. A high frequency treatment apparatus:

according to claim 7, further comprising;

a balloon which is provided at a fore-end of the insertion section, and which is inflated by fluid with which an interior of the balloon is filled; and

a channel which is formed in the insertion section, and through which the fluid is supplied into the balloon.

9. A high frequency treatment apparatus according to claim 7, wherein:

the sheath is inserted through the channel of the insertion section in a forward and backward movable manner, and the first electrode is inserted through the sheath in a freely forward and backward movable manner and has an electrically insulating section at a fore-end thereof, and

the apparatus further comprises;

a first operation section which is connected to the sheath, and which is used for moving the sheath in the channel forward and backward; and

a second operation section which is connected to the first electrode, and which is used for moving the first electrode in the sheath forward and backward.

10. A high frequency treatment apparatus comprising:

a high frequency generation section which supplies high frequency power;

a control section which is connected to the high frequency generation section, and which controls output of the high frequency generation section, said control section having;

(i) a first control mode in which the maximal output value of high frequency power supplied from the high frequency generation section is confined to be equal to or less than a first predetermined value, and (ii) a second control mode in which the maximal output value of high frequency power supplied from the high frequency generation section is confined to be equal to or less than a second predetermined value which is less than the first predetermined value;

a treatment tool which is connected to the high frequency generation section, and which performs a treatment of diseased tissue by supplying high frequency power from the high frequency generation section controlled by the control section to the diseased tissue; and

a control mode setting section which is connected to the control section, and which sets one of the first and second control modes;

wherein the first control mode is a high-power mode for performing coagulating and cutting operations, and the second control mode is a low-power mode for performing an ablating operation; and

wherein the treatment tool comprises;

a sheath having at least one channel;

an internal needle which is removably insertable in the channel of the sheath, paracentesis into biogenic tissues together with the sheath;

a tissue removal tool which is also removably insertable into the channel of the sheath, said tissue removal tool having an electrode to which power is supplied from the high frequency generation section and being adapted to perform removal of the diseased tissue using the electrode; and

a mandrin which is also removably insertable in the channel of the sheath,

wherein the internal needle, the mandrin and the tissue removal tool are selectively inserted into the sheath.

11. A high frequency treatment apparatus according to claim 10, wherein the tissue removal tool comprises:

an endoscope;

a stabilizer on which the electrode is provided, and which is mounted to the endoscope in a forward and backward movable manner; and

an operation mechanism that moves the stabilizer along a lengthwise direction of the endoscope forward or backward.

12. A high frequency treatment apparatus according to claim 10, wherein the internal needle comprises:

a vibrator which oscillates ultrasonic oscillation;

a hone which is connected to the vibrator, and which amplifies the ultrasonic oscillation; and

a blade portion which is connected to the hone.

13. A high frequency treatment apparatus according to claim 10, wherein:

the sheath is provided with a first channel and a second channel, and

a bridge having mouthpieces which respectively communicate with the channels in the sheath is provided at a base end of the sheath.

14. A high frequency treatment apparatus according to claim 13, wherein:

the tissue removal tool comprises an endoscope which is inserted through the first channel of the sheath, and an operative tool and a suction pipe which are inserted through the second channel of the sheath,

the operative tool comprises a sheath which has a fixation section by which the electrode is fixed in a freely mountable and demountable manner at a fore-end thereof, and a power supply wire which is provided in the sheath and which electrically connects the electrode to the high frequency generation section, and

the operative tool and the suction pipe are selectively inserted through the second channel.

15. A high frequency treatment apparatus according to claim 13, wherein:

the tissue removal tool comprises a first operative tool which is inserted through the first channel of the sheath, and a second operative tool which is inserted through the second channel of the sheath,

the first operative tool comprises a first sheath section which is inserted through the first channel in a forward and backward movable manners, and the electrode which is inserted in the first sheath section in a forward and backward movable manner,

the second operative tool comprises a second sheath section which is inserted through the second channel in a forward and backward movable manner, and a cutter which is provided at a fore-end of the second sheath section,

scale marks which indicate a protruded length of the first sheath section from a fore-end of the first channel are provided in a base end side of the first sheath section,

scale marks which indicate a protruded length of the electrode from a fore-end of the first sheath section are provided in a base end side of the electrode, and

scale marks which indicate a protruded length of the second sheath section from a fore-end of the second channel are provided in a base end side of the second sheath section.