JP2000271144A - Surgery instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply and easily improve operability. SOLUTION: A drive circuit 8 comprises a signal detection part 19 to detect the force quantity detected by a force quantity detection part as the signal, a drive part 20 to drive an ultrasonic oscillator 9, a control circuit 21 to control the drive part 20 based on the signal detected by the signal detection part 19, and a buzzer 22 to generate the sound corresponding to the output level of the drive part 20 controlled by the control circuit 21, and the control circuit 21 outputs the sound signal to the buzzer 22 corresponding to the energy quantity to be outputted to the drive part 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surgical tool, and more particularly to a surgical tool characterized by a control portion of energy applied to tissue for treatment.

[0002]

2. Description of the Related Art Conventionally, various surgical systems have been known. For example, an ultrasonic surgical apparatus that uses an ultrasonic vibration to vibrate a treatment tool to incise or coagulate a living tissue, There is an electrosurgical unit that cuts and coagulates the living tissue to be operated by the thermal action of the scalpel, and a power treatment tool that finely crushes unnecessary living tissue by rotational force.

[0003] Further, as disclosed in Japanese Patent Publication No. 2-43501, for example, a device has been proposed in which the operability is improved by using a battery-operated system and making it wireless. In the surgical apparatus disclosed in Japanese Patent Publication No. 2-43501, the power is turned on and off by an operation unit provided by a drive switch.

[0004]

However, in an apparatus such as an ultrasonic coagulation and incision apparatus for setting the output amount variably and outputting, it is necessary to perform the variable setting by means different from the operation. There is a problem that the operation becomes complicated.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a surgical instrument which can easily and easily improve operability.

[0006]

A surgical instrument according to the present invention provides a distal end for applying energy to tissue for treatment, an operating section for grasping and operating the tissue, and the distal end supplies energy for performing treatment. Energy supply means, grip force detection means for detecting a grip force amount when performing an operation by gripping the operation unit, and controlling the output energy amount of the energy supply means by the grip force amount detected by the grip force amount detection means Output energy control means.

In the surgical instrument according to the present invention, the output energy control means controls the output energy amount of the energy supply means based on the gripping force amount detected by the gripping force amount detecting means, thereby improving the operability easily and easily. It is possible to make.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 5 relate to a first embodiment of the present invention. FIG. 1 is a configuration diagram showing a configuration of a battery-type ultrasonic coagulation incision tool, and FIG. 2 is a configuration diagram of a drive circuit in FIG. FIG. 3 is a diagram showing a relationship between an output amount from the control circuit of FIG. 2 to the drive unit and an output sound frequency of the buzzer, FIG. 4 is a diagram showing a first modification of the cylinder of FIG. 1, and FIG. FIG. 4 is a view illustrating a second modification of the cylinder in FIG. 1.

(Structure) As shown in FIG. 1, a battery-type ultrasonic coagulation / incision tool 1 as a surgical instrument according to the present embodiment has an insertion portion 2 inserted into a body cavity and a proximal end of the insertion portion 2. The operation unit 5 includes a fixed handle 3 and a movable bundle 4. A cylindrical cylinder 6 is provided on the base end side of the operation unit 5 along the insertion shaft. Inside the cylinder 6, a battery 7, a drive circuit 8, and an ultrasonic vibrator 9 are incorporated. Note that the output energy of the drive circuit 8 is supplied by the battery 7.

A treatment section 10 is provided on the distal end side of the insertion section 2, and the treatment section 10 includes a probe 11 and a movable section 12. A drive shaft 13 for transmitting the operation of the movable handle 4 to the movable portion 12 is inserted through the inside of the insertion portion 2. The movable handle 5 is movable starting from a shaft 15 provided on the fixed handle 3.

The fixed handle 3 is provided with a force detecting unit 14 for detecting a force transmitted to the drive shaft 13. The force detection unit 14 is, for example, a capacitance-type force detector that detects a force by a change in capacitance by changing a distance between the electrodes, but is not limited to this. The used strain gauge or the like can also be used.

As shown in FIG. 2, the driving circuit 8 includes a signal detecting section 19 for detecting the power detected by the power detecting section 14 as a signal, a driving section 20 for driving the ultrasonic vibrator 9, a signal detecting section. A control circuit 21 for controlling the drive unit 20 based on the signal detected by the control unit 19 and a buzzer 22 for generating a sound corresponding to the output level of the drive unit 20 controlled by the control circuit 21
The control circuit 21 outputs a sound signal to the buzzer 22 in accordance with the amount of energy output to the drive unit 20.

The frequency of the sound signal changes in accordance with the output amount. FIG. 3 shows the relationship between the amount of output from the control circuit 21 to the drive unit 20 and the output sound frequency of the buzzer 22.

The surgeon can recognize the change in the output energy amount by recognizing the change in the sounding frequency of the buzzer 22 with his ear.

(Operation) Next, the operation of the battery-type ultrasonic coagulation / incision instrument 1, which is the surgical instrument of the present embodiment, will be described.

When a living tissue is coagulated and dissected using the battery-type ultrasonic coagulation and incision tool 1, the tissue is gripped between the probe 11 and the movable portion 12 of the treatment section 10 by operating the movable handle 4, and the grip is held. The power detection unit 14 detects the power,
The output signal is transmitted to the drive circuit 8, and the drive circuit 8 controls the drive unit 20 by the control circuit 21, and drives the ultrasonic transducer 9 with output energy according to the output signal of the force detection unit 14.

Here, the relationship between the detected power of the power detector 14 and the output energy of the drive circuit 8 will be described.

The amount of force (no-load force) when the operation unit 5 is moved without holding anything is f0 (N), the maximum amount of force when the operation unit 5 is squeezed is Fmax (N) (constant), the maximum amount of force When the maximum set value of the output energy of the drive circuit 8 when the operation unit 5 is squeezed is set to Pmax (W) (constant), the force detection unit 14 detects when the tissue is gripped by the operation of the operation unit 5. If the amount of force obtained is F (N), the output energy P (W) of the drive circuit 8 becomes P = Pmax × (F−f0) / (Fmax−f0), and the output energy value of P (W) The ultrasonic transducer 9 is driven.

(Effect) As described above, in the battery-type ultrasonic coagulation / incision tool 1 of the present embodiment, the force detection unit 14 detects the force when the tissue is grasped by operating the operation unit 5, and the drive circuit 8 Since the control circuit 21 controls the driving unit 20 and drives the ultrasonic vibrator 9 with output energy according to the output signal of the force detection unit 14, the operation of the operation unit 5 only requires the operation of the ultrasonic vibrator 9. Since an appropriate output energy can be given to the tissue, there is no need to set the output energy of the ultrasonic transducer 9 during the operation of the operation unit 5, and the operability can be easily and easily improved.

Although the cylinder 6 has a cylindrical shape, the present invention is not limited to this. The cylinder 6 may have a box cylinder shape. When the cylinder 6 has a box cylinder shape, as shown in FIG.
By providing the indicator 31 composed of D, the amount of energy output by the drive circuit 8 according to the amount of force detected by the amount of force detection unit 14 may be displayed as a bar graph. Thus, the operator can perform an operation while checking the amount of energy displayed on the indicator 31. The indicator 31 displays, for example, a ratio (%) of the output power with respect to the maximum output power (eg, a maximum output of 300 W) or an amplitude of the ultrasonic wave (a ratio% with respect to the maximum amplitude) as a bar graph as an energy amount.

In place of the indicator 31,
As shown in FIG. 5, the numerical display LE is provided on the upper surface of the cylinder 6.
A display unit 32 constituted by D may be provided, and the amount of energy output from the drive circuit 8 according to the amount of power detected by the amount of power detection unit 14 is displayed as a numerical value. In this case as well, the surgeon uses the display unit 3
Surgery can be performed while checking the amount of energy displayed in 2. The display unit 32 displays, for example, an output power (W: for example, a maximum output of 300 W) or an amplitude of an ultrasonic wave (a ratio% to the maximum amplitude) as a numerical value as an energy amount.

FIG. 6 is a configuration diagram showing a configuration of a battery-type ultrasonic coagulation / cutting instrument according to a second embodiment of the present invention.

Since the second embodiment is almost the same as the first embodiment, only different points will be described, and the same components will be denoted by the same reference numerals and description thereof will be omitted.

(Structure) In the present embodiment, the force detection unit 1
6, a torque sensor 41 is provided on the shaft 15 serving as a starting point of the movable handle 4 provided on the fixed handle 3, and the torque applied to the shaft 15 is measured. The torque sensor 41 is constituted by a torque sensor using a strain gauge. The output signal of the torque sensor 41 is transmitted to the drive circuit 8 as the amount of gripping force by the movable handle 4.

(Operation) When the living tissue is coagulated and incised using the battery-type ultrasonic coagulation and incision tool 1, the probe 11 of the treatment section 10 and the movable section 12 are operated by operating the movable handle 5.
The tissue is gripped between the two, and the amount of the gripping force is
Is detected, the output signal is transmitted to the drive circuit 8, and the drive circuit 8 drives the ultrasonic vibrator 9 with the output energy corresponding to the output signal.

(Effects) As described above, also in the present embodiment, the same effects as in the first embodiment can be obtained.

[Supplementary note] (Supplementary note 1) A battery-operated surgical instrument having a battery as a driving power source in the surgical instrument, and a distal treatment section for performing treatment by the output of a battery provided at the distal end of the insertion section. ,
An operation unit for remotely operating the distal treatment unit, an energy supply unit for supplying energy for performing a treatment with the distal treatment unit, and an operation force detection unit for detecting a grip force amount of the operation unit. A battery-operated surgical instrument comprising: a control unit that changes an output energy amount of the energy supply unit according to the amount of force detected by the operation force amount detection unit.

(Additional Item 2) The battery-operated surgical instrument according to Additional Item 1, further comprising a notifying means for allowing a user to recognize a change in the amount of output energy.

(Additional Item 3) The battery-operated surgical instrument according to Additional Item 2, wherein the notification means is based on a change in output sound in accordance with an amount of output energy.

(Additional Item 4) The battery-operated surgical instrument according to Additional Item 2, wherein the notification means is a visual display means corresponding to an output energy amount.

[0032]

As described above, according to the surgical instrument of the present invention, the output energy control means controls the output energy amount of the energy supply means based on the gripping force amount detected by the gripping force amount detecting means, so that it is simple and easy. There is an effect that operability can be improved.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a configuration of a battery-type ultrasonic coagulation and incision tool according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram showing a configuration of a drive circuit of FIG. 1;

FIG. 3 is a diagram showing a relationship between an output amount from a control circuit of FIG. 2 to a driving unit and an output sound frequency of a buzzer.

FIG. 4 is a view showing a first modification of the cylinder of FIG. 1;

FIG. 5 is a view showing a second modification of the cylinder of FIG. 1;

FIG. 6 is a configuration diagram showing a configuration of a battery-type ultrasonic coagulation incision device according to a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Battery type ultrasonic coagulation incision tool 2 ... Insertion part 3 ... Fixed side handle 4 ... Movable side bundle 5 ... Operation part 6 ... Cylinder 7 ... Battery 8 ... Drive circuit 9 ... Ultrasonic vibrator 10 ... Treatment part 11 ... Probe DESCRIPTION OF SYMBOLS 12 ... Movable part 13 ... Drive shaft 14 ... Force detection part 15 ... Axis 19 ... Signal detection part 20 ... Drive part 21 ... Control circuit 22 ... Buzzer

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tomohisa Sakurai 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Industrial Co., Ltd. (72) Inventor Akira Shiga 2-43-2 Hatagaya, Shibuya-ku, Tokyo No. Within Olympus Optical Co., Ltd. (72) Katsumi Sasaki 2-43-2 Hatagaya, Shibuya-ku, Tokyo In-house Olympus Optical Co., Ltd. (72) Masaru Karasawa 2-43, Hatagaya, Shibuya-ku, Tokyo No. 2 Inside Olympus Optical Industrial Co., Ltd. (72) Inventor Takeaki Nakamura 2-43-2 Hatagaya, Shibuya-ku, Tokyo F-term inside Olympus Optical Industrial Co., Ltd. (reference) 4C060 GG02 GG28 JJ17 JJ25 KK04 KK04 KK23

Claims (1)

[Claims] A tip for applying energy to tissue for treatment; an operating unit for gripping and operating the tissue; an energy supply means for supplying energy for the tip to perform a treatment; Gripping force detecting means for detecting the amount of gripping force when performing an operation by using the gripping force, and output energy control means for controlling the output energy amount of the energy supply means based on the amount of gripping force detected by the gripping force amount detecting means. Surgical tools characterized.