JPS63230162A - Hyperthermia apparatus in body cavity - 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 [Field of Industrial Application] The present invention relates to a device for heating and treating an affected area within a body cavity.

[Conventional technology]

It is known that malignant tumors occurring within body cavities are sensitive to temperatures of around 42° C., and that thermotherapy is effective as a means of treating such affected areas.

As shown in Japanese Unexamined Patent Application Publication No. 55-70248, a conventional thermotherapy device uses a probe for thermotherapy to be inserted into the affected area using a channel for inserting forceps in an endoscope, and the probe is used to touch the affected area. Heat treatment is known.

[Problem that the invention seeks to solve]

However, with this device, the tip of the endoscope must first be inserted close to the affected area, and the probe must be guided to the affected area using the endoscope's channel for passing the forceps. Following the insertion operation of the probe, it is necessary to insert the probe into the body cavity, and it takes time and effort to insert the probe into the body cavity.

Furthermore, in the case of colon endoscopes, etc., a sliding tube may be used to assist the insertion of the endoscope into a body cavity; When inserting an endoscope into a body cavity and then guiding the probe to the affected area using the forceps insertion channel of this endoscope, it is necessary to insert the endoscope and the sliding tube. In addition, the probe needs to be inserted, and it takes a lot of time to insert the probe into the body cavity, which causes pain to the patient during insertion.

The present invention aims to provide an intrabody cavity thermotherapy device in which insertion of a thermotherapy section is facilitated and pain caused to the patient is reduced by ρ1.

[Means for solving problems]

The present invention provides a sliding tube that assists in inserting an endoscope into a body cavity, and includes an inflatable and deflated balloon for inflating the body cavity and transmitting heat to the affected area.
The sliding tube is characterized in that a supply passage for supplying pressurized fluid to the balloon is provided, and a heating electrode is provided for heating the pressurized fluid injected into the balloon.

[Effect]

According to the present invention, a sliding tube is inserted into a body cavity without inflating the balloon, and at this time, an endoscope inserted through the sliding tube is used to search for the affected area and the balloon can be opposed to the affected area, Fluid can be supplied to the balloon near the affected area to inflate it, and then the heating electrode can be energized to heat the pressurized fluid injected into the balloon. Therefore, the members necessary for thermotherapy can be easily inserted into the body cavity.

〔Example〕

The present invention will be described below based on a first embodiment shown in FIGS. 1 to 4.

In FIG. 1, reference numeral 1 denotes a sliding tube, which is made of an elastic material such as rubber or resin and has a hollow cylindrical shape, and has an insertion hole 2 therein through which a distal end insertion portion 21 of an endoscope 20 is inserted. A large-diameter grip portion 3 is provided at the proximal end of the sliding tube 1.

As shown in FIG. 2, a balloon 4 is provided at the insertion tip of the sliding tube 1 that is inserted into the living body cavity A. As shown in FIG. The balloon 4 is made of an elastic tube made of rubber or the like, and both ends thereof are fixed to the insertion tip of the sliding tube 1 in a fluid-tight manner. Therefore, when the pressure inside the balloon 4 is increased, the balloon 4 is inflated.

Located inside the balloon 4, at the insertion tip of the sliding tube l, a coiled intracavity high-frequency electrode 5, for example, is provided. The intracorporeal high-frequency electrode 5 is connected to a lead wire 6 inserted through the thick wall of the sliding tube 1.

As shown in FIG. 4, this lead wire 6 is connected to a high frequency power source 11 of a heating control device 10 provided outside.

Furthermore, a temperature sensor 7 made of a thermal lightning pair or the like is attached to the inner or outer surface or within the thickness of the balloon 4. This temperature sensor 7 is also connected to the temperature measuring device 12 of the two-legged heating control device 10 via a lead wire 8 inserted through the thick part of the sliding tube l.

Also, in the thick part of the sliding tube l,
” Balloon water injection passage 9a connected to the inside of the bipedal balloon 3
and a drainage passage 9b (shown in FIG. 3) are provided, and these water injection passage 9a and drainage passage 9b are connected to the fluid perfusion pump 13 of the heating control device IO.

In FIG. 4, reference numeral 15 denotes an extracorporeal high-frequency electrode, which is connected to the high-frequency power source 11 of the heating control device 10.

The endoscope 20 may be of a known type as shown in FIG. 4, so a detailed explanation thereof will be omitted, but the distal end insertion section 21 and the operating section 22 at the hand are offset. The tip insertion portion 21 normally has a curved portion 23 and a tip component 24, and the tip component 24 has an observation window 25, a light cable 26, a water supply port 27, and a suction port 2, as shown in FIG.
8th grade is provided.

The observation window 25 is connected to a viewing window 29 of the operation unit 22 by a fiber cable, and the inside of the body cavity A can be visually checked through the viewing window 29 through the bipedal observation window 2-5. Note that this observation window 25 is of a perspective type that allows viewing in an oblique direction.

The light cable 2B is connected to a light source device 30 provided outside the endoscope 20, and the light cable 26 guides the light generated by the light source device 30 to illuminate the inside of the body cavity A.

The water supply port 27 and the suction port 28 are connected to an air supply pump, a water supply pump, and a suction pump (not shown) provided in the light source device 30.

The operation of the embodiment with such a configuration will be explained.

To perform thermal treatment on the affected area B of the body cavity A, the sliding tube 1 is inserted into the body cavity A, and then the endoscope 20 is introduced into the body cavity A through the insertion hole 2 of the sliding tube 1.

When inserting the sliding tube 1 into the body cavity A, it goes without saying that the balloon 4 should be inserted in a deflated state.

When the endoscope 20 is inserted into the sliding tube 1, the affected area B of the body cavity A is searched for using the endoscope 20.

That is, light is emitted from the light cable 26 facing the distal end component 24 to illuminate the body cavity A, and the patient is inserted into the body cavity A while searching for the affected area through the observation window 25.

When the affected area B of the malignant tumor is found within the body cavity A, the position of the sliding tube 1 is corrected and the balloon 4 is operated so as to face the affected area B.

When the balloon 4 faces the affected area B, in this state, i4i and the body are injected into the balloon 4. The fluid is injected into the balloon 4 from the fluid flow pump 13 provided in the heating control device 10 through the balloon water injection passage 9a.

This inflates the balloon 4, and the outer surface of the balloon 4 is pressed against the affected area B.

When the balloon 4 comes into close contact with the affected area B with appropriate pressure, the sliding tube 1 is stopped by the friction between the balloon 4 and the body cavity, and in this state, water injection is stopped and the endoscope 20 is pulled out, leaving the sliding tube 1 alone. put.

Next, a high frequency voltage is applied between the intracorporeal high frequency electrode 5 and the extracorporeal high frequency electrode 15 from the high frequency power source L1.

As a result, the fluid within the balloon 4 is heated.

The temperature of the fluid is detected by a temperature sensor 7, and this 7H degree is displayed by a temperature measuring device 12.

The fluid in the balloon 4 is brought to an optimal temperature for treating the affected area B, for example around 42°C; once this is complete, this state is maintained and heat treatment is performed.

The temperature of the fluid during treatment can be known from the display of the temperature measuring device 12 through detection by the temperature sensor 7, and it can be confirmed whether or not an appropriate temperature is being maintained.

When the treatment for a predetermined period of time is over, the high frequency power source 11 is turned off, and the application of voltage to the intracorporeal high frequency electrode 5 and the extracorporeal high frequency electrode 15 is stopped.

Next, the fluid in the balloon 4 is discharged. This discharge is carried out by the operation of the fluid perfusion pump I3.
done through.

Therefore, the balloon 4 is harvested and becomes approximately the same thickness as the sliding tube 1, so it can be pulled out from inside the body 1 holder A.

According to such an embodiment, the sliding tube 1
A balloon 4, an intracorporeal high-frequency electrode 5, and a temperature sensor 7 are installed at the distal end insertion portion of the body.
Necessary members are introduced into the body cavity A simultaneously with the insertion of the sliding tube 1.

Therefore, it can be inserted in a short time.

Therefore, in this case, it is possible to insert the endoscope 20 into the sliding tube 1 and use the endoscope 20 to search for the affected area B of the body cavity A. iE L can be made to face the affected area B.

For this reason, the insertion process takes less time and causes less pain to the patient.

Note that the present invention is not limited to the first embodiment described above.

That is, -1-2 In the case of the first embodiment, the case where the sliding tube 1 is a rigid type that does not curve in the middle is explained, but in the present invention, the sliding tube 1 is a rigid type that does not curve in the middle. and 8? as shown in the third embodiment?
J/F sliding tubes 40 and 50
It's good.

Curved type sliding tube 40 not shown in Fig. 5
In this example, an angle knob 42 is attached to an operating portion 41, and a bending portion 43 is operated to bend using an operating wire (not shown) inserted into a sliding tube 40.

Curved type slide, Ingnajub 5 not shown in Figure 6
0 is equipped with a shape memory alloy energizing switch 52 in the operation part 51, and by operating this switch 52, the curved part 5 is turned on.
A shape memory alloy (not shown) embedded in the shape memory alloy 3 is deformed by self-heating, and the curved portion 53 is bent by this deformation.

Furthermore, the present invention may be implemented in a fourth embodiment shown in FIG.

In FIG. 7, two balloons 80. 61
These balloons are equipped with 80. 81 partitions off the affected area B within the body cavity A.

And body cavity A surrounded by these balloons 60 and 61
Inject saline or the like into the space 62 of the electrode C.
It is designed to heat at 3. Note that it is desirable to form a closed window 64 in the wall of the sliding tube 1 between the front and rear two balloons [io, G1] so that the affected area B can be observed with the endoscope 20.

Furthermore, if the electric conductor 1flea is embedded in the wall of the sliding tube 1, the diameter of the insertion portion of the sliding tube 1 can be made smaller than when it is arranged in a coil shape around the sliding tube 1.

Furthermore, instead of providing the electrodes 5 and 63, the fluid injected into the balloon 4 may be a conductive fluid, such as a magnetic fluid, and if the conductive fluid is energized, the conductive fluid functions as an intracorporeal electrode. Therefore, special electrodes 5 and 63
is omitted.

Furthermore, in the first embodiment, the shape of the balloon 4 is
Although a case has been described in which the balloon 70 is shaped like a tube that covers the circumference of the sliding tube 1, the balloon 70 may also be shaped like a bag that covers the tip of the sliding tube 1, as in the fifth embodiment shown in FIG. . When using such a bag-shaped balloon 70, the balloon 70 is made of a transparent material, and the balloon is inserted into the sliding tube l through the observation window 25 of the endoscope 20. The inner surface of body cavity A can be observed through 70.

Then, the endoscope 2 inserted into the sliding tube 1
0, as shown by the imaginary line, to move the affected part B of the body cavity A.
This causes the balloon 70 to face the affected area B. After this, the water supply port 27 (
(See Figure 1), and using a channel for inserting forceps (not shown) to insert an intracorporeal high-frequency electrode 71 and a temperature sensor (not shown) into the balloon 70.
You may also insert . In addition, drainage is done through the suction port 28.
This shall be done according to the following.

Further, the sliding tube 1 may be of a type that has a cut in the axial direction and opens left and right. In this case, the endoscope 20 is first inserted into the body cavity A, and then the sliding tube 1 is inserted into the body cavity A. It can be attached so as to cover 20.

Further, the endoscope 20 may be of a rigid type or a video monitor type.

〔Effect of the invention〕

As explained above, according to the present invention, a sliding tube that assists in inserting an endoscope into a body cavity is provided with an inflatable and deflated balloon for inflating the body cavity and transmitting heat to the affected area. A supply passage for supplying pressurized fluid to the balloon is provided in the sliding tube,
In addition, since an electrode was provided to heat the pressurized fluid injected into the balloon, the sliding tube was inserted into the body cavity without inflating the balloon, and at this time, the endoscope inserted through the sliding tube The balloon can be placed opposite the affected area while searching for the affected area, inflate the balloon by supplying fluid near the affected area, and then energize the heating electrode to inject pressurized fluid into the balloon. can be heated. Therefore, the members necessary for thermotherapy can be easily and quickly inserted into the body cavity, thereby reducing the pain caused to the patient.

[Brief explanation of drawings]

1 to 4 show a first embodiment of the present invention, in which FIG. 1 is a perspective view of a sliding tube, FIG. 2 is a sectional view of the tip of the sliding tube, and FIG. 3 is a 4 is an explanatory diagram showing the overall connection state, and FIGS. 5 and 6 are explanations of a sliding tube and an endoscope showing the second and third embodiments of the present invention, respectively. FIG. 7 is a sectional view of the tip of a sliding tube showing a fourth embodiment of the present invention, and FIG. 8 is a sectional view of the tip of a sliding tube showing a fifth embodiment of the invention. 1...Slide ink tube, 2...Insertion hole, 4
, Go, 61.70...Balloon, 5, 83
．． 71... Intrabody cavity high frequency electrode, 7... Temperature sensor,
9a...Water injection passage, 9b...Drainage passage, 10...
Heating control device, 11... High frequency power source, 12... Temperature measuring device, 13... Perfusion pump, 20-9. Endoscope, 2
DESCRIPTION OF SYMBOLS 1... Tip insertion part, 22... Operation part, 23... Curved part, 24... Tip structure part, 30... Light source device. Applicant's agent Patent attorney Jun Tsuboi 20 Fj:J'! IJL Theory Figure 1 Figure 2

Claims (1)

[Claims] A sliding tube that assists in inserting an endoscope into a body cavity is provided with a balloon that can be inflated and deflated, and a supply passage for supplying pressurized fluid to the balloon is provided in the sliding tube, and the fluid is injected into the balloon. An intrabody cavity thermotherapy device characterized by being provided with an electrode that heats a pressurized fluid.