JPS61141354A - Cauterization hemostatic apparatus - 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 cautery and hemostasis device that is used endoscopically to cauterize and stop bleeding from a bleeding wound.

[Prior art] In recent years, by inserting an elongated insertion section into a 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 tools are inserted, and the operator can visually observe the symptoms using the treatment tools inserted into the channel. Various therapeutic procedures can be performed underneath.

By the way, there are laser treatment devices that irradiate laser beams to coagulate blood as a means to remove tumors in body cavities or to stop bleeding in wounds such as ulcers, but at present, skill is required for laser beam irradiation. , and high cost.

For this reason, there is a device that uses an ablation probe that can be inserted into the channel of an endoscope and coagulates the protruding surface against which the ablation probe is pressed by energizing a heating coil installed at the distal end of the ablation probe. Proposed.

However, with this heating coil type AM, the responsiveness of the rise in temperature when coagulating blood and the fall of temperature after hemostasis is low, so the time required for coagulation or the probe after coagulation is low. There is a problem in that during the time it takes for the wound to cool down, heat conduction to the surrounding tissue causes necrosis of the surrounding tissue other than the target area (wound).

Therefore, Japanese Patent Application Laid-open No. 58-69556 discloses a high-speed heat-generating ablation probe that uses a heat-generating element with good heating and cooling response in an ablation probe that can be inserted into the channel of an endoscope. Committee that has been disclosed. This prior art device is
The probe is equipped with a nozzle and has the function of discharging a cleaning fluid that is pumped through the catheter to wash blood from the wound and make it easier to find bleeding sites that require coagulation.

[Problems to be Solved by the Invention] The conventional technology has a drawback in that when the tip of the probe is lower than the liquid level of the cleaning liquid tank, the cleaning liquid naturally flows out from the tip of the probe due to the siphon principle.

Furthermore, as a result, the probe tip is constantly being cooled with cleaning fluid, which causes problems such as the temperature of the probe tip not rising when necessary, making it impossible to perform the desired treatment, and even after using the device. There were times when the cleaning solution dripped and the floor around the probe became soaked with water.

This invention solves the above problems, and by stopping the operation of the pump that sends the cleaning liquid, the liquid feeding to the probe is reliably stopped.
The purpose is to provide a cautery hemostasis device that is safe and easy to use.

[Means for Solving the Problems] The present invention provides an ablation probe at the tip of an elongated sheath that can be inserted into a treatment instrument insertion channel of an endoscope, and a heating element is disposed within the probe. The tip surface is used as a heat transfer part, L E 70-7 k:, / X /L/
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E' A cautery hemostasis device having a liquid passage for sending a cleaning liquid in the sheath, a waterway system for sending the cleaning liquid to the liquid passageway, and a liquid feeding means, wherein the waterway system is opened at a predetermined pressure or higher (controlled). This is a cautery hemostasis device equipped with a valve.

[How this cautery hemostasis device works] When the fluid delivery means, such as the fluid delivery pump, is not in operation, the control valve installed in the waterway system will not open under pressure equal to the water level difference due to the siphon principle, and the probe will No cleaning fluid is delivered.

[Example] Hereinafter, the present invention will be described in detail with reference to the drawings.

As shown in FIG. 1, the cautery hemostasis device 1 includes a power supply device 3 provided with an operation panel 2 on the front surface, and a cautery probe device detachably connected to the power supply device 3 through an electrical connector 4 and a liquid supply connector 5. 6, a foot switch 9 which is detachably attached to the power supply device 3 via a connector 8 provided on the cable 7, and a cleaning liquid tank 10 which is detachably attached to the side of the power supply device 3.

The ablation probe device 6 includes an elongated and flexible sheath 11, an ablation probe 12 connected to the distal end of the sheath 11, and the electrical connector 4 and liquid delivery connector 5 provided on the base side of the sheath 11. The sheath 11 and the cauterizing probe 12 at its tip can be inserted into a treatment instrument channel of an endoscope (not shown), and the cauterizing probe 12 is introduced into the body cavity through this channel. A coaxial cable is inserted into the sheath 11 in the axial direction to energize a heating element installed inside the cautery probe 12 at the tip, and a coaxial cable is inserted into the sheath 11 in the axial direction around the outer circumference of the coaxial cable. A liquid passage (not shown) is formed for pressure-feeding a cleaning liquid to a plurality of nozzles (not shown) formed on the outer periphery of the ablation probe 12 .

Then, the electrical connector 4 and liquid supply connector 5 on the base side of this ablation probe device 16 are connected to the 'R'#l device 3, and the foot switch 9 also connects the connector 8 of the cable 7 to the power supply device 3. , while turning on the main switch 3a of the power supply device 3 and selecting and setting the heating amount and cleaning liquid feeding amount setting buttons 2a and 2b provided on the operation panel 2, turn on the cleaning liquid feeding side of the foot switch 9. By pressing the switch 9a, the liquid pump installed in the power supply device 3 is activated to direct the cleaning liquid in the cleaning liquid tank 10 through the liquid passage in the sheath 11 from the nozzle on the outer periphery of the ablation probe 12 at the tip to the affected area in the body cavity. to wash away blood, etc. from the affected area, or by pressing the heating switch 9 of the foot switch 9.
By pressing the b side, electricity can be applied to the heating element in the ablation probe 12 at the tip via the coaxial cable in the sheath 11 to heat it to a predetermined temperature.

The inside of the power supply device 3 is constructed as shown in FIG. In other words, electricity? l! The device 3 is divided into an upper chamber and a lower chamber 13b (not shown) by an intermediate chassis (not shown) disposed in the plane of the lower part of the box 13, and supplies electricity to a heating element installed in the ablation probe 12 in the upper chamber. An electrical system consisting of various circuits is provided for this purpose, and a water channel system 16 for pumping cleaning water to the nozzle formed in the ablation probe 12 is provided in the lower chamber 13b. An assembly hole is formed in the intermediate chassis, and the pump device 18 is assembled into this assembly hole. The water channel system 16 includes a water tube 19 that supplies cleaning water from the cleaning liquid tank 10 to the pump device 18, and a liquid feeding path 20 that passes the cleaning water that is pressurized and pumped by the water pump device 18. , both are connected to the lower chamber 13b side of the water pump device 18. Said lower chamber 1
A recess 21 is formed on the side surface of the pock 13 on the 3b side, and the water tube 1 is formed on the wall plate 21a forming the recess 21.
A connector 22 to which 9 is connected is attached.

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A single-shaped water shielding plate 23 is attached, and this water shielding plate 23 forms a liquid supply passage outlet space 24 that is separated from the upper chamber in the box 13, and a lower chamber is formed in this outlet chamber 24. 13b
A liquid supply path 20 is led out from the box and connected to a water supply plug 26 attached to the box front plate 25.

On the other hand, a bracket 27 is attached to the side surface of the box 13 having the concave portion 21, and the cleaning water tank 10 is hung on this bracket 27 with a piece 28.
0 can be hung removably. The cleaning water tank 10 has an outlet 29 and a liquid feeding tube 30 is led out from the opening 29, and the other end of the liquid feeding tube 30 is formed with a mouthpiece 31 that connects to the connector 22. .

Check valves 40, 41 are provided at the inlet and outlet of the pump 18 to regulate the flow of the cleaning liquid. In the liquid feeding path 20,
A pressure detector 42 is provided, the output of which is input to a control circuit 43, and a control valve 44 is provided roughly in the liquid feeding path 2'0.

As shown in FIG. 3 and FIG. 4, the control valve 44 is provided with a spring 45 inside to bias the valve body 46 toward the inlet portion.

The connector 22, as shown in FIG.
2C, and a backing 50 is attached to this connecting pipe 22c. The cap part 31 is provided with a fitting tube 51 and a connecting cap 52, a backing 53 is attached to the connecting cap 52, and a backing 53 similar to that shown in FIGS. 3 and 4 is provided inside the fitting tube 51. A structural control valve 54 is provided.

Further, the liquid feeding tube 30 has an internal tube 30a, and this internal tube is connected to a fitting tube 51.

Next, the operation of this embodiment will be explained based on the drawings.

After the heating treatment is completed, when the liquid feeding switch 9a is pressed, the pump 18 is activated and the liquid feeding tube 3 is discharged from the cleaning liquid tank 10.
0 internal tube 30a, base part 31, connector 22
, the cleaning liquid is sucked into the pump via the water tube 19. At this time, inside the cleaning liquid tank 10, the liquid feeding tube 30
It leaks to the atmosphere through the gap between the inner tube 30a and the inner tube 30a, the notch (not shown) in the European pipe 51, and the opening 60 of the connector body 22a, so even if the cleaning liquid is sucked, it will not leak into the tank 10.
The inside never becomes a negative presence.

The cleaning liquid sucked into the pump 18 is sent to the water supply plug 26 through a check valve 41 provided in the wave transmission path 20, a pressure detection channel 42, and a control valve 44. Since the cleaning liquid under pressure is sent to the control valve 44 from the pump 18, as shown in FIG. 4, the spring 45 and the valve body 46 are retracted by the pressure, allowing the cleaning liquid to pass through. Similarly, the spring 55 of the control valve 54 provided in the mouthpiece 31 is retracted by pressure, allowing the cleaning liquid to pass through.

Further, the pressure detector 42 is activated when the cleaning liquid left reaches a predetermined value or higher, and outputs a signal to the control circuit 43, which stops the operation of the pump 18 and the like to ensure safety.

The cautery hemostasis device of this embodiment has a control valve 4 in the middle of the liquid feeding path.
4, when the pump 18 is not operating, the cleaning liquid will not drip from the tip of the probe, and the probe will not be heated incorrectly or the area around the device will not get dirty. Furthermore, in this embodiment, a control valve 54 is also provided inside the mouthpiece 31 of the tube 30 coming out from the tank 10.
Since this is provided, when the base portion 31 is removed from the connector 22, the control valve 54 is closed, and the cleaning liquid does not drip and the cleaning liquid does not get around the device.

Note that the embodiments of the present invention are not limited to the embodiments described above, and the control valve may be provided at other positions in the waterway system, and the structure of the valve may be such that it opens at a certain pressure or higher. If so, its structure does not matter.

It is also conceivable to provide a solenoid valve that opens in conjunction with the operation of the pump vJ1 as a control valve, but this would make the device complicated and heavy, which is not preferable.

[Effects of the Invention] According to the present invention, when sending washing water to the probe of an ablation hemostasis device, the feeding of the washing water is reliably stopped by stopping the operation of the liquid feeding pump, and unnecessary liquid feeding and washing water from the device are avoided. No more dirt. This enables safe and reliable ablation treatment.

[Brief explanation of drawings]

Fig. 1 is an overall view showing an embodiment of the present invention, Fig. 2 is a sectional view of an embodiment of the invention, and Fig. 3 and 4 are control valves used in an embodiment of the invention. FIG. 5 is a sectional view of a washing water tank and a connector portion used in an embodiment of the present invention. 1... Cauterization hemostasis device, 11... Sheath, 12...
Probe, 16... Channel system, 18... Pump (water feeding means), 20... Liquid feeding path, 44... Control valve Fig. 3 Fig. 4

Claims (1)

[Scope of Claims] An ablation probe having a nozzle inside is provided at the tip of a slender sheath that can be inserted into a treatment instrument channel of an endoscope, and a heating element is disposed within the probe, and a cauterization probe is provided inside the sheath, and a heating element is disposed within the probe. Provide a liquid passageway from the to the nozzle,
A cautery and hemostasis device having a waterway system communicating with the liquid passage and a liquid sending means for supplying cleaning liquid to the waterway system, characterized in that a control valve that opens at a predetermined pressure is provided in the middle of the waterway system. cautery hemostasis device.