JPS63230163A - 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 described in Japanese Patent Application Laid-Open No. 55-70248, a conventional thermotherapy device is equipped with a balloon at the tip of a catheter for inflating a body cavity and transmitting heat to the affected area. There is known a device that includes a fluid supply passage for inflating the skin and transmitting heat to the affected area through the balloon, and a heating electrode that heats the fluid within the balloon.

When a balloon is inserted into a body cavity and fluid is supplied from the fluid supply passage, the balloon inflates and inflates the body cavity and comes into contact with the affected area, thus heating the fluid inside the balloon. Heat treatment can be performed by heating the affected area using electrodes.

It has also been proposed that a temperature measuring means for monitoring the temperature of the fluid is provided inside the balloon and the temperature of the fluid is controlled by this temperature measuring means.

However, the conventional device described above does not have a means for guiding the balloon to a position that correctly faces the affected area within the body cavity, and it is difficult to bring the balloon into reliable contact with the affected area.

An endoscope may be used to introduce the balloon into a position directly facing the affected area. In other words, since the endoscope is equipped with an observation window, it is possible to locate the affected area within the body cavity. Therefore, if the balloon is guided while searching for the location of the affected area using the endoscope, the balloon can be guided. , the balloon can be brought into reliable and correct contact with the affected area.

[Problem that the invention seeks to solve]

However, when a thermotherapy device is inserted close to the affected area along with an endoscope, if the endoscope is left inside the body cavity while the balloon is being used to perform thermotherapy, it may cause pain to the patient. There is a problem that gives .

The present invention aims to provide an intrabody cavity thermotherapy device that can search for an affected area using an endoscope and that can leave only a thermotherapy applicator in the body cavity.

[Means for solving problems]

The present invention provides a thermotherapy applicator that includes an inflatable balloon, a heating electrode, a temperature measuring means, and a supply passage for supplying pressurized fluid to the balloon, which can be detachably attached to an endoscope. It is characterized by being attached.

[Effect]

According to the present invention, the thermotherapy applicator attached to the endoscope can be inserted into the body cavity together with the endoscope, so that the balloon can be reliably guided to the affected area. Moreover, by separating the thermotherapy applicator from the endoscope inside the body cavity and pulling out the endoscope from the body cavity, only the thermotherapy applicator can remain in the body cavity. Therefore, since the endoscope is not inserted into the body cavity during the thermotherapy, there is less pain caused to the patient.

〔Example〕

The present invention will be described below based on a first embodiment shown in FIGS. 1 to 7.

In FIG. 1, the overall configuration is shown, and ■ is an endoscope. The endoscope 1 may be of a conventionally known type, so a detailed explanation of its structure will be omitted, or it may consist of an insertion section 2 inserted into a biological cavity A and an operating section 3 at hand. The insertion section 2 has a distal end connected to a distal end component via a curved section. By operating an angle knob provided on the operating section 3, the curved section can be curved in any direction.

An observation window is formed in the tip component, and this observation window is connected to a viewing window 4 provided in the operating section 3 via a fiber cord. Note that it is preferable that the observation window in this embodiment be of a side viewing type.

Further, the tip end of a light cable is exposed to the tip component, and this light cable is connected to the light source device 5 through the operation section 3.

The light source device 5 is provided with a light source, a suction pump, and an air pump.

Furthermore, as is known in the art, the endoscope 1 is provided with a water injection passage for cleaning an observation window, an air supply passage, a suction passage, a forceps channel (none of which are shown), and the like.

An applicator 10 for thermotherapy is detachably attached to the tip of the insertion section 2 of the endoscope 1.

To explain the applicator 10, as shown in FIG. 2, the applicator 10 of this embodiment has a balloon 12 formed of an elastic body such as rubber at the tip of a probe 11 made of an elongated flexible material. We are prepared.

The balloon 12 has a double structure. That is, 13
is an inner balloon that can be brought into close contact with the outer periphery of the insertion section 2 of the endoscope 1, and has an annular tube shape. On the outer periphery of the inner balloon 13 for adhering to the endoscope, an outer balloon 14 which can be brought into close contact with the inner surface of the body cavity A is formed into an annular tube shape and is integrally joined by means such as heat fusion. Therefore, these inner balloon 13 and outer balloon 14 each serve as mutually independent fluid injection spaces, and have a mutually double structure in the radial direction.

The joining wall between the inner balloon 13 and the outer balloon 14 constitutes an annular partition 15.
For example, an annular intracorporeal high-frequency electrode 16 is provided around the entire circumference.
is buried. The reference diameter of the entire balloon 12 is maintained by this annular intracorporeal high-frequency electrode 16.

Further, a temperature sensor 17 made of a thermal lightning pair or the like is provided on the inner surface, the inner wall thickness, or the outer surface of the outer 1 balloon 14 as a claw tube.

As shown in FIG. 3, inside the probe 11 is an inner balloon water injection passage 1. which communicates with the inside of the inner balloon 13.
8a and an inner balloon drainage passage 18b are provided.
Further, an outer balloon water injection passage 19a and an outer balloon drainage passage 19b are provided to communicate with the inside of the outer balloon 14.

Furthermore, inside the probe 11, the above-mentioned intrabody cavity high frequency electrode 1 is provided.
A lead wire 20 connected to the temperature sensor 17 is inserted therethrough, and a lead wire 21° 21 connected to the temperature sensor 17 is also inserted therethrough.

Such a probe 11 is connected to a heating control device 25 shown in FIG. The heating control device 25 includes a high frequency power source 26. Fluid perfusion pump 27 and temperature measuring device 28
is provided.

Inner balloon water injection passage 1 formed in the probe 11
8a, the inner balloon drainage passage 18b, the outer balloon water injection passage 19a, and the outer balloon drainage passage L9b are each connected to the fluid perfusion pump 27 via a switching valve (not shown).

Further, the lead wire 20 for an intracorporeal high-frequency electrode inserted through the inside of the probe 11 is connected to a high-frequency power source 26, and the lead wires 21 and 21 are connected to a temperature sensor 17.
is connected to a temperature measuring device 28.

In addition, in FIG. 1, 29 is an extracorporeal high frequency electrode,
It is connected to the high frequency power source 26 of the heating control device 25.

The operation of the first embodiment with such a configuration will be explained with reference to FIGS. 4 to 7.

In a state in which pressurized fluid is being sucked out from the inner balloon 13 and the outer balloon 14 by the fluid perfusion pump 27, the inner balloon 13 and the outer balloon 14 are both deflated. In this case, since the reference diameter of the entire balloon 12 is maintained by the annular intracorporeal high-frequency electrode 16, the inner diameter of the inner balloon 13 is expanded and the outer diameter of the outer balloon 14 is reduced.

Therefore, in this state, the distal end of the endoscope 1 is inserted into the inner balloon 13. Pressure fluid is then injected into the inner balloon 13 from the fluid perfusion pump 27.

Then, the inner balloon 13 is inflated. However, since the outer circumferential wall of the inner balloon 13 is prevented from expanding by the annular intracorporeal high-frequency electrode 16, the inner balloon 13 eventually
As shown in FIG. 4, the inner diameter swells to become smaller. Therefore, the inner balloon 13 comes into close contact with the outer circumferential surface of the distal end of the endoscope 1, and therefore the entire balloon 12 is engaged with the distal end of the endoscope 1 by friction.

In this state, the insertion section 2 of the endoscope 1 is inserted into the body cavity A.

In this case, the insertion section 2 is inserted into the body cavity A while emitting light from the light cable facing the tip of the insertion section to illuminate the body cavity A and searching for the affected area using the observation window. This operation is similar to that of a normal endoscope.

When the affected area B of the malignant tumor is found in the body cavity A, the balloon I
Operate so that 2 faces the affected area B.

The endoscope 1 is held still with the balloon 12 facing the affected area B, and fluid is injected into the outer balloon 14 from the fluid perfusion pump 27. Then, the outer balloon 14 is inflated, and as a result, the outer diameter of the outer balloon 14 increases, as shown in FIG. 5, and it comes into close contact with the affected area B.

When the outer balloon 14 is brought into close contact with the affected area B with appropriate pressure,
The fluid perfusion pump 27 pumps out the pressurized fluid within the inner balloon 13 . Then, the inner balloon 13 deflates and expands its inner diameter, as shown in FIG. 6, so that the frictional engagement with the endoscope 1 is released.

In this state, the endoscope 1 can be pulled out of the body cavity A.

Even when the endoscope 1 is pulled out, the outer balloon 14 is in close contact with the affected area B with an appropriate pressure, so the balloon I2 of the applicator 10 remains in contact with the affected area B as shown in FIG. It remains in A.

Next, a high frequency voltage is applied between the intracorporeal high frequency electrode 16 and the extracorporeal high frequency electrode 29 from the high frequency power source 2B.

Then, the fluid injected into the outer balloon 14 is heated.

The temperature of the fluid can be detected by the temperature sensor 17 and detected by the temperature measuring device 28 .

When the fluid in the outer balloon 14 reaches the optimal temperature for treating the affected area B, for example around 42° C., this state is maintained to perform thermal treatment.

The temperature of the fluid during treatment can also be controlled by the temperature sensor 17 and the display of the temperature measuring device 28 .

When the treatment for a predetermined period of time is over, the power supply to the intracorporeal high-frequency electrode 17 and the extracorporeal high-frequency electrode 29 is stopped, and the pressurized fluid in the outer balloon 14 is discharged by the fluid perfusion pump 27. Then, the outer balloon 14 deflates and reduces its outer diameter, so that the tight contact with the body cavity A is released.

Therefore, it can be pulled out of the body cavity A via the probe 11.

According to the first embodiment, when the balloon 12 of the applicator 10 is inserted into the body cavity A, it is locked to the tip of the insertion section of the endoscope 1 and inserted together with the insertion section of the endoscope L. , the original function of the endoscope 1, that is, it can be inserted into the body cavity A while searching for the affected area B through the observation window;
In addition, since the distal end portion can be bent, the balloon 12 can be reliably guided to a position facing the affected area B. Therefore, the insertion operation is easy and the insertion time can be shortened.

Furthermore, the balloon 12 is deflated at the time of insertion, and can be made to have approximately the same thickness as the endoscope insertion portion 2, making insertion easy.

Therefore, there is little pain caused to the patient during insertion.

In addition, since the endoscope 1 is being pulled out of the body cavity A while the affected area B is being treated with the balloon 12, the endoscope 1 is inserted into the body cavity A and left unattended during the heat treatment, which takes a relatively long time. This reduces the amount of pain caused to the patient during treatment.

Note that the present invention is not limited to the above ml example.

That is, in the second embodiment shown in FIGS. 8 and 9, the balloon 1 of the applicator 10 is similar to that of the first embodiment.
2 into the body cavity A, a sliding tube SO is used together with the endoscope I.

The sliding tube 30 is known as an auxiliary tool when inserting the endoscope 1 into the body cavity A. As shown in FIG. The sliding tube 30 is placed over the endoscope 1 as shown in FIG. 8, and the insertion tip of the sliding tube 30 is brought into contact with the balloon 12 as shown in FIG. When the endoscope 1 is pulled out of the body cavity A in this state, the balloon 12 is held down by the insertion tip of the sliding tube 30, so the balloon 12 does not move together with the endoscope 1.

Therefore, the balloon 12 can be kept in proper contact with the affected area B.

It is assumed that the sliding tube 30 is also pulled out of the body cavity A during the thermal treatment.

10 and 11 show a third embodiment of the present invention.

In the third embodiment, an inner balloon 13 for adhering to the endoscope and an outer balloon 14 for adhering to the inner surface of the body cavity are separably formed, and the inner balloon 13 is integrally fixed to the distal end of the endoscope l. ing.

Even in such a configuration, when inserting into the body cavity A, only the inner balloon 13 is inflated and the outer balloon 14 is engaged as shown in FIG. 10, and when inserted into the body cavity A, as shown in FIG. As such, the outer balloon 14 is inflated and the inner balloon 13 is deflated.

Therefore, the inflated outer balloon 14 is in close contact with the inner surface of the body cavity A, and the deflated inner balloon 13 is in close contact with the inner surface of the body cavity A.
Stay away from 4. Therefore, the endoscope 1 and the inner balloon 13 can be pulled out while leaving the outer balloon 14 in place.

A fourth embodiment of the present invention is shown in FIGS. 12 and 13.

In this fourth embodiment, the balloon 12 is of a single-layer type, and C-rings 41, 41 made of a shape memory alloy and capable of elastic expansion and contraction are embedded in the front and rear ends of the balloon 12.

This C ring 41 is made of these shape memory alloys.
．． 41 causes the balloon 12 to be locked to the endoscope 1 as shown in FIG. 12.

When inserted into the body cavity A, warm water is injected into the balloon 12. Then, the balloon 12 inflates due to the injection of hot water and comes into close contact with the body cavity A, and at this time, the C-rings 41 and 41 made of the shape memory alloy are deformed to expand in diameter as shown in FIG. 13 due to the heat of the hot water. As a result, the inner diameter of the balloon 12 also expands, so that it separates from the endoscope 1. Therefore, only the endoscopic ml can be extracted.

A fifth embodiment of the present invention is shown in FIGS. 14 and 15.

This fifth embodiment is a further improvement of the fourth embodiment, in which the intracorporeal electrode 50 is constructed of a coiled or tubular body made of a shape memory alloy.

In this device, the balloon 12 is locked to the endoscope 1 as shown in FIG. 14 by the elastic action of the intracorporeal electrode 5G made of a shape memory alloy.

When inserted into the body cavity A, warm water is injected into the balloon 12. Then, the balloon 12 inflates due to the injection of hot water and comes into close contact with the body cavity, and at this time, the heat of the hot water causes the intrabody cavity type Fi 50 made of the shape memory alloy to expand in diameter as shown in FIG. As a result, the inner diameter of the balloon 12 also expands, so that it separates from the endoscope 1. Therefore, only the endoscope I can be pulled out.

16 to 20 show a sixth embodiment of the present invention.

The applicator 10 in this sixth embodiment has a 17th
As shown in FIG. 18 and FIG.
2 is attached, and a probe 11 is guided out from the base body GO.

As shown in FIGS. 17 and 18, this base body 60 and the distal end of the endoscope 1 are provided with permanent magnets 6 that can be freely attracted to each other.
1.62 (or electromagnets may be used) are attached, and the base body GO is detachably locked to the endoscope 1 by these permanent magnets 61.82.

The probe 11 led out from the base 60 is connected to the heating control device 25 through the channel 9 of the endoscope 1 .

Inside the probe 11, as shown in FIGS. 19 and 20, there is a water injection passage 61 communicating with the inside of the balloon 12.
and a drainage passage 62 are provided, through which a lead wire 20 connected to the intracorporeal high-frequency electrode 16 is inserted, and a lead wire 21.21 connected to the temperature sensor 17 is inserted.
is inserted.

Such a probe 11 has an applicator side connector 6.
3 and a heating control device side connector 64 are connected to the heating control device 25.

These applicator side connector 63 and heating control device side connector 64 have terminals B6a and Hb, respectively.

66b and the receiver are electrically connected by metals 67a, 67b, and 67b, and the connection ports 68a and 88b and the receiver ports 69a and 89b are connected to the water injection passage 61 and the drain passage B2, respectively.

In this case, the outer diameter of the applicator side connector 63 is formed to be thinner than the channel 9 of the endoscope 1, so that the applicator side connector 63 can be inserted into the channel 9 of the endoscope 1. It is configured.

In such a sixth embodiment, the probe 1 of the applicator IO is first inserted outside the body with the balloon 12 deflated.
1 is pulled out from the distal end of the endoscope 1 through the channel 9 to the rear end side, and the base body 60 of the applicator 10 is locked to the distal end of the endoscope 1 by permanent magnets 61 and 62.

In this state, the endoscope 1 is inserted into the body cavity A, and the balloon 1 is inserted into the body cavity A.
2 to face the affected area B.

Next, when a force is applied to push the rear end of the probe 11 into the channel 9, a force is transmitted to the base body 60 to separate it from the distal end of the endoscope 1, thereby causing the permanent magnets 81 and 62 to come off. Therefore, when the endoscope 1 is pulled out of the body cavity A, the balloon 12 is left in the body cavity A. Note that when the endoscope 1 is pulled out from the body cavity, the applicator side connector 63 passes through the channel 9 of the endoscope 1, so the balloon 1
The endoscope 1 can be pulled out while leaving the endoscope 2 in the body cavity A.

Thereafter, the applicator side connector 63 of the probe 11 is connected to the heating control device side connector 64 to connect the balloon 12 to the heating control device 25.

Therefore, thermotherapy can be performed in the same manner as in the first embodiment.

FIG. 21 shows a seventh embodiment of the invention.

This embodiment is a modification of the sixth embodiment, in which the probe 11 is divided near the balloon 12. By using permanent magnets 71a, 71b (or electromagnets) to connect the split probes lla and llb, it is possible to maintain the split probes lla and llb so that they do not separate during treatment.

Note that such a connection using a magnet can also be applied to the connection portion between the applicator side connector 63 and the heating control device side connector 64 in the sixth embodiment.

FIG. 22 shows an eighth embodiment of the invention.

In this device, a sleeve 80 made of insulating synthetic resin or the like is integrally fixed inside the balloon 12, and a locking flange 81 is formed at the tip of the sleeve 80.

The distal end of the endoscope 1 can be inserted into the sleeve 80, and the distal end of the endoscope I is adapted to come into contact with the soil sampling flange 81.

Therefore, the sleeve 80 equipped with the balloon 12 is placed over the distal end of the endoscope 1, and the endoscope 1 is inserted into the body cavity (
arrow direction) and the distal end of the endoscope l is attached to the locking flange 81.
It hits and pushes the balloon 12 forward.

Furthermore, when the endoscope 1 is removed, the distal end of the endoscope 1 separates from the soil sampling flange 81, and the endoscope 1 can be pulled out while leaving the balloon 12 in the body cavity.

FIG. 23 shows a ninth embodiment of the invention.

In this device, a hook ring 90 is provided at the tip of the balloon 12, forceps 91 are inserted into the channel 9 of the endoscope 1, and the hook ring 90 is inserted with the forceps 9■ led out from the tip of the endoscope 1. It is removably hooked.

According to this, by hooking a ring 90 with forceps 91 led out from the tip of the endoscope 1, the balloon 12 can also be introduced together when the tip of the endoscope 1 is inserted into the body cavity. When the balloon 12 is inserted into the desired location, the forceps 91 are opened by an external operation and the hook is removed from the ring 90. If you do this, balloon 1
The endoscopic VTL can be withdrawn while leaving the VTL 2 in the body cavity.

FIG. 24 shows a tenth embodiment of the present invention.

This device is of a type in which the balloon 12 of the applicator 10 surrounds the probe 11, and the hook provided on the balloon 12 is the ninth type in that it uses a ring 90 and a forceps 91 inserted into the channel 9 of the endoscope 1. The same effect as in the embodiment is achieved.

The endoscope of the present invention is not limited to the flexible visual type shown in the embodiments, but can also be implemented as a video monitor type or a rigid type.

〔Effect of the invention〕

As explained above, according to the present invention, since the thermotherapy applicator can be inserted into the body cavity together with the endoscope while attached to the endoscope, the balloon can be reliably guided to the affected area. , allowing rapid insertion into body cavities. Moreover, if the thermotherapy applicator is separated from the endoscope inside the body cavity and the endoscope is pulled out from the body cavity, only the thermotherapy applicator can remain in the body cavity. Since the endoscope is not inserted into the body cavity during treatment, there is less pain caused to the patient.

[Brief explanation of drawings]

1 to 7 show a first embodiment of the present invention, FIG. 1 is a diagram showing the overall structure, FIG. 2 is a sectional view showing the configuration of the tip of the applicator, and FIG. 2, FIGS. 4 to 7 are diagrams for explaining the insertion action, FIGS. 8 and 9 are views, and FIGS. 12 and 13 are views of the fourth embodiment of the present invention. FIG. 14 and FIG. 15 are explanatory diagrams showing a fifth embodiment of the present invention. 16 to 20 show a sixth embodiment of the present invention, FIG. 16 is a diagram showing the overall structure, FIG. 17 is a perspective view showing the configuration of the tip of the applicator, and FIG. Cross section, No. 19
The figure is a perspective view 1 of the connector section, and FIG. 20 is a sectional view thereof. FIG. 21 is an explanatory diagram showing the seventh embodiment of the invention, FIG. 22 is an explanatory diagram showing the eighth embodiment of the invention, and FIG. 23 is an explanatory diagram showing the ninth embodiment of the invention. , FIG. 24 is an explanatory diagram showing a tenth embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Endoscope, 2... Endoscope insertion part, 3... Operation part, 5... Light source device, 9... Channel, 10...
- Applicator, 11... Probe, 12... Balloon, 16... Intrabody cavity high frequency electrode, 17... Temperature sensor, 18a, l'9a... Water injection passage, 1.8b
, L9b...Drain passage, 25...Heating control device, 26...Power supply, 27...Fluid perfusion pump, 28
...Temperature measuring device, 29...Extracorporeal electrode. Applicant's Representative Patent Attorney Jun Tsuboi Figure 1 Figure 3 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14 Figure 15 Figure 16 25 Figure 19 Figure 21 Figure 22 Figure 23

Claims (1)

[Claims] A thermotherapy applicator having an inflatable and deflated balloon, a heating electrode, a temperature measuring means, and a passage for supplying pressurized fluid to the balloon is removably attached to an endoscope. A body cavity thermotherapy device.