# US 2014/0194871 A1 · Surgical device

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- Number: US 2014/0194871 A1
- Document ID: US20140194871A1
- Status: Published application
- Kind: A1
- Application number: 14/163,528
- Filed: 2014-01-24
- Published: 2014-07-10
- Earliest claimed: 2012-04-20
- Assignees: Olympus Medical Systems Corp.
- Applicants: Olympus Medical Systems Corp.
- Inventors: Hideo SANAI
- Web page: https://patentgrep.com/patent/US20140194871A1

## CPC

- A61B 18/1445: {at the distal end of a shaft, e.g. forceps or scissors at the end of a rigid rod}
- A61B 2017/00026: {Conductivity or impedance, e.g. of tissue}
- A61B 2017/320094: {additional movable means performing clamping operation}
- A61B 2018/00875: {Resistance or impedance}
- A61B 2218/002: Irrigation
- A61B 2218/007: Aspiration
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

A surgical apparatus includes: a treatment section treating a living tissue; an energy generation section providing high-frequency current to the treatment section; a liquid feeding conduit feeding a liquid to the living tissue; a suction conduit suctioning the liquid; an energy control section that outputs a high-frequency output control signal for controlling the energy generation section; a first pump drive section that feeds the liquid from the liquid feeding conduit while the high-frequency current is output, according to a command of the high-frequency output control signal, and stops feeding of the liquid, according to a command of the high-frequency output control signal; and a second pump drive section that suctions the liquid from the suction conduit for a predetermined period of time or in a predetermined amount, according to a command for stopping the high-frequency output control signal, and stops suction of the liquid after the suction.

## Claims

### Claim 1

A surgical apparatus comprising:
a treatment section for treating a living tissue;
an energy generation section for providing high-frequency current to the treatment section;
a liquid feeding conduit for feeding a liquid to the living tissue;
a suction conduit for suctioning the liquid;
an energy control section that outputs a high-frequency output control signal for controlling the high-frequency current from the energy generation section;
a first pump drive section that feeds the liquid from the liquid feeding conduit while the high-frequency current is output, in response to a command for an output of the high-frequency output control signal from the energy control section, and stops feeding of the liquid from the liquid feeding conduit, in response to a command for stopping the high-frequency output control signal; and
a second pump drive section that suctions the liquid from the suction conduit for a predetermined period of time or in a predetermined amount, in response to a command for stopping the high-frequency output control signal from the energy control section, and stops suction of the liquid from the suction conduit after the suction for the predetermined period of time or in the predetermined amount.

### Claim 2 (depends on 1)

The surgical apparatus according to claim 1, wherein the predetermined period of time or the predetermined amount is stored in a storage section and can be set/changed.

### Claim 3 (depends on 1)

The surgical apparatus according to claim 1, wherein the predetermined period of time or the predetermined amount is set according to a period of time of outputting the energy or a period of time of driving the first pump.

### Claim 4 (depends on 1)

The surgical apparatus according to claim 1, wherein upon receipt of an instruction for generating the energy to the energy generation section after stoppage of the output of the energy, the energy control section stops the second pump.

### Claim 5 (depends on 1)

The surgical apparatus according to claim 1, wherein the energy control section performs control so that driving of the second pump is started so as to perform suction of the liquid via the second pump, in response to the stoppage of the output of the high-frequency output control signal, and the pump is stopped after supply of the liquid via the second pump for the predetermined period of time or in the predetermined amount.

### Claim 6 (depends on 1)

The surgical apparatus according to claim 1, further comprising a liquid suction restricting mechanism arranged at a position midway in the suction conduit, the suction restricting mechanism restricting suction of the liquid flowing in the suction conduit in response to an operation of an operating handle.

### Claim 7 (depends on 1)

The surgical apparatus according to claim 1, comprising an impedance detection section that detects an impedance between two pinching members that pinch the living tissue in the treatment section,
wherein the predetermined period of time or the predetermined amount varies according to the impedance detected by the impedance detection section.