JPS61170448A - Treatment jig for endoscope - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a treatment instrument used in an endoscope.

[Conventional technology]

In recent years, by inserting an elongated insertion section into the body cavity,
BACKGROUND OF THE INVENTION Endoscopes that can perform diagnostic or therapeutic procedures within body cavities without requiring incisions from the body surface are widely used. In addition to the observation means, this endoscope is generally equipped with a hollow channel through which various treatment instruments are inserted. It is now possible to perform a variety of therapeutic treatments.

By the way, a treatment tool used for thermal treatment, a cauterizing surface, etc. performs treatment by bringing the distal end into contact with the affected area and heating it. Therefore,
In order to avoid applying more heat than necessary to the affected area and causing burns, it is necessary to control the temperature of the tip of the treatment instrument. For this reason, conventionally, as described in Japanese Patent Application Laid-Open No. 59-17345, a temperature detection element such as a thermocouple is disposed at the distal end of the treatment instrument to control the temperature of the distal end of the treatment instrument.

[Problem that the invention seeks to solve]

As mentioned above, in the conventional technology, in order to arrange a temperature detection element such as a thermocouple at the tip of the treatment instrument, the tip of the treatment instrument must be made large, and in order to insulate it from the heating part, etc. The structure of the tip becomes complicated. Furthermore, with devices such as thermocouples in which the temperature cannot be determined without electrical processing, there is a problem in that the device becomes complicated. The present invention was made in view of these problems, and an object of the present invention is to measure the temperature at the tip of a treatment instrument with a simple structure.

[Means for solving problems]

In this invention, as shown in FIG. 1, a thermovent 32 is coated on the distal end 311C of the treatment tool 3°, which changes color when the set temperature is exceeded.

[For production]

The distal end 31 of the treatment instrument 30 is brought into contact with the affected area and heated. When the set temperature is exceeded, the color of the thermo paint 32 changes to notify the operator.

〔Example〕

Hereinafter, embodiments of the present invention will be described using a cautery hemostasis device.

FIGS. 2 and 3 relate to embodiments of the present invention, with FIG. 2 being a sectional view showing a cautery glove, and FIG. 3 being a perspective view showing the overall configuration of the apparatus.

As shown in FIG. 3, the cautery and hemostasis device 1 includes a power supply box 3 with an operation panel 2 on the front, and a cauterization tool that is detachably connected to the power supply box 3 through an electrical connector 4 and a water supply connector 5. a foot switch 9 which is detachably attached to the power supply box 3 using a connector 8 provided on the cable 7, and a cleaning water tank 10 which is detachably attached to the side surface of the power supply box 3. It is configured.

The ablation probe device 6 includes an elongated and flexible sheath 11, an ablation probe 12 connected to the tip of the sheath 11, and the electrical connector 4 and water supply connector 5 provided on the base side of the sheath 11. The sheath 11 and the cautery glove 12 at its tip can be inserted into a treatment instrument channel of an endoscope (not shown), and the cautery probe 12 is introduced into the body cavity through this channel. A coaxial cable 13 is inserted into the sheath 11 in the axial direction to energize the heating element 14 which is inserted into the ablation probe 12 at the tip. A water supply channel 16 is formed in the cauterization globe 12 to forcefully feed cleaning water to a plurality of nozzles 15 formed on the outer periphery of the cautery globe 12. Then, the electric connector 4 and the water supply connector 5 on the base side of this ablation probe device 6 are connected to the power supply box 3, and the foot switch 9 also connects the connector 8 of the cable 7 to the power supply box 3. At the same time as turning on the main switch 3a, the amount of heating provided on the operation panel 2,
With the cleaning water supply amount setting buttons 2a and 2b selected and set, pressing the cleaning water supply side switch 9a of the foot switch 9 activates the water bonder housed in the power supply box 3 to supply the cleaning water tank 10. Water is sent from the nozzle 15 on the outer periphery of the ablation probe 12 at the tip through the water supply channel 16 in the sheath 11 to the affected area in the body cavity to wash away blood, etc. in the affected area, and the foot switch 9
By pressing the heating switch 9b side, the tip of the cautery glove 1 is
The heating element 14 inside the heating element 2 is energized so that it can be heated to a predetermined temperature.

The details of the ablation probe 12 on the distal end side of the ablation probe device 6 are constructed as shown in FIG. That is, an elongated flexible sheath 11. For example, a main body 18 having a solid axial through hole 17 is connected and fixed to the tip of a Teflon sheath, and a heat transfer surface 19a whose tip is pressed against a wound on the outer periphery of the main body 18 to cauterize and solidify the wound A hollow cylindrical cap 19 having a hemispherical surface (arc surface) and having good heat transfer is attached and fixed thereto. The main body 18
A concave portion 17a connected to the through hole 17 is formed on the tip side of the cap 19, and the tip of the coaxial cable 13 inserted from the sheath 11 side is located therein, and the inner wall opposite the hemispherical heat transfer surface 19a of the cap 19 is filled with solder. At attachment 20, a Zener diode, for example, as the heating element 14 is joined, and the tip of the coaxial cable 13 and the heating element 14 are electrically connected to the power transmission coil 21. Further, the heating element 14 is urged toward the soldering 20 side by a coil spring 23 whose one end is brought into contact with the inner wall of the recess 17 of the main body 18 via an insulating tube 22 such as a glass tube. In addition, since the coil spring 23 biases the heating element 14 toward the soldering 20 side and stabilizes it, the connection between the coaxial cable 13 and the heating element 14 is made using the power transmission coil 21 as described above. Is going.

A plurality of nozzles 15 on the outer periphery of the cautery glove 12 in the illustrated example
... are formed on the straight portions of the main body 18 and the cap 19. This nozzle 15... is formed in a groove shape in the direction of the outer circumferential axis, and its rear end side communicates linearly with a water supply channel 16 formed inside the sheath 11, while its output side extends from the straight part. It rises in a gentle arc shape and has an output angle θ of 15 to 16 degrees. Further, the distance from the nozzle output end to the tip of the 10-bubble 12 is determined to be greater than or equal to the radius of curvature of the hemispherical heat transfer surface 19a of the globe 12.

By forming the nozzles 15 in this way, the cleaning water emitted from the nozzles 15 flows linearly along the outer circumferential axis direction of the cautery globe 12, and the 10-
This allows water to be sent in a straight line to the front of the block 12, which makes it easy to hit the area to be washed, and also prevents the sent washing water from going around the hemispherical heat transfer surface 19a. . Note that the main body 18 is formed with heat radiation grooves 18a for cooling.

Further, a hemispherical transmission surface 19a at the tip of the cap 19 is coated with a non-adhesive coating 24, such as Teflon coach ink (Silno base tone coating), to prevent the cap 19 from sticking to tissue. The circumferential side part 19bK of the cap 19 is coated with thermo paint 2.
5 has been applied.

This thermo paint 25 is reversible, and changes color when the temperature exceeds a certain set temperature, and returns to the original color when the temperature falls below the set temperature. In this case, the set temperature is preferably set to a temperature that may have an adverse effect on the tissue or the heating element.

To describe the operation of the above configuration, the ablation probe 12 of the ablation probe device 6 is inserted into the channel of the endoscope. Then, the heating element 14 generates heat and the heat transfer surface 19a pressed against the wound cauterizes the wound to stop bleeding. In this case, if the heating element 14 heats up too much and exceeds the set temperature,
The color of the thermo paint 25 changes.

Therefore, the surgeon always passes the tI4. It was found that the color of the thermo paint 25 applied to the circumferential side 19b of the cap 19 changed, and countermeasures such as lowering the temperature of the heating element 14 can be taken before it adversely affects the affected tissue or the heating element. .

Alternatively, the thermo paint 25 having different set temperatures may be applied to the cap 19 in a ring shape, for example, so that the user can see that the temperature at the tip of the cap 19 is gradually increasing.

In addition, irreversible thermo paint is applied to the seal,
The seal may be attached to the cap 19.

The non-stick coating 24 may be mixed with thermo paint and applied to the surface.

〔Effect of the invention〕

In the present invention, thermopaint is applied to the tip of the treatment tool, and the color changes when the temperature exceeds a set temperature, so the temperature of the tip can be measured with a simple structure.

[Brief explanation of drawings]

FIG. 1 is a diagram explaining the present invention, FIG. 2 is a diagram showing an embodiment, and FIG. 3 is a perspective view of an apparatus using the present invention. 1... Cautery hemostasis device, 6... Cautery probe device, 1
2... Cautery probe, 19... Cap, 25...
・Thermo paint ′

Claims (1)

[Claims] 1. An endoscopic treatment instrument that is inserted into a body cavity through an endoscope channel and heat-treats an affected area, characterized in that a thermopaint is applied to a distal end of the treatment instrument.