JP2002011021A - Thermotherapy device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a thermotherapy device which can heat even a wide tissue area evenly, effectively and easily. SOLUTION: The thermotherapy device is provided with a guide sheath 2 having an inside opening part 2a enabled to be inserted into, and opening toward, inside of a cerebral ventricle 1 as well as an outside opening part 2b opening toward outside of a body, a tube 3 with a balloon enabled to be inserted into this guide sheath and a microwave radiation probe 6 enabled to be inserted into the guide sheath 2. The tube with a balloon 3 and the microwave radiation probe 6 can be separately inserted from the outside opening part 2b of the guide sheath 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat treatment apparatus for heat treatment of an affected tissue located inside a living body.

[0002]

2. Description of the Related Art Conventionally, a microwave probe used for heat treatment of an affected part in a living body is formed in a hard or flexible rod or cable shape, and the rod or cable probe covers the periphery of a microwave radiating portion. Thus, the balloon is integrally attached. Such a conventional microwave probe, alone or through a channel of an endoscope, is inserted into a body lumen, body cavity, or tissue, and emits microwaves to a desired site, The affected tissue was heat-treated.

[0003]

The conventional microwave probe is very effective in heating a narrowed stenotic lumen, a solid organ tissue or a part of the inner wall of a body cavity. However, when heating the entire inner wall of the body cavity that forms a certain amount of internal space such as the ventricle, bladder, or uterus, it is necessary to change the position of the probe many times and repeat heating multiple times . Therefore, the procedure is complicated, time-consuming, and inefficient. In addition, it was burdensome for the surgeon to perform heating evenly so as to prevent uneven heating.

[0004] The present invention has been made in view of the above circumstances, and has as its object to provide a heat treatment apparatus that can efficiently and uniformly heat even a wide tissue surface. I do.

[0005]

SUMMARY OF THE INVENTION A heat treatment apparatus according to the present invention has a tubular body which can be inserted into a living body cavity and has an inner opening opening into the living body cavity and an outer opening opening outside the body. And a tube with a balloon that can be inserted into the cylindrical body, and a microwave radiating probe that can be inserted into the cylindrical body, and the tube with a balloon and the microwave radiating probe are individually separated from the outer opening. It can be inserted. This microwave radiation probe
It may have a plurality of microwave radiating parts.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment (Configuration) FIG. 1 shows a first embodiment of the present invention. The first embodiment forms a heat treatment device suitable for heat treatment of the surface of the ventricle. This heat treatment device includes a guide sheath 2 which is a cylindrical body that penetrates a scalp and a skull H as a body surface and is inserted into a body cavity, that is, into the ventricle 1. 1 inside opening 2a
And an outer opening 2b opening outside the body. Further, the heat treatment apparatus includes a tube 3 with a balloon which is inserted into the ventricle 1 from the outer opening 2b of the guide sheath 2, and the tube 3 with the balloon is
The relay tube 4 is connected to the proximal end of the balloon tube 3 ′, and the balloon tube 3 ′ is connected to the relay tube 4 by the liquid injection pump 5 connected to the proximal end of the relay tube 4. The liquid can be injected into and drained from. Further, the heat treatment apparatus includes a microwave probe 6 formed separately from the tube 3 with the balloon and inserted from the outer opening 2b of the guide sheath 2 similarly to the tube 3 with the balloon. The wave probe 6 is connected to a microwave oscillator 8 via a relay cable 7, and radiates microwaves from an antenna portion 6 ', which is a microwave radiating portion formed at a distal end portion.

(Function) When the heat treatment apparatus according to the first embodiment is used to perform heat treatment on the affected part 9 located on the inner wall surface or inner surface of the ventricle 1, the skull H on the surface of the head body is used.
The guide sheath 2 is inserted through the inner opening 2
a is placed in the ventricle 1. Thereafter, the balloon-equipped tube 3 is inserted through the outer opening 2b of the guide sheath 2, and the balloon portion 3 'provided at the distal end is placed in the ventricle 1. Subsequently, the liquid injection pump 5 is started, and the conductive liquid is injected from the pump 5 into the balloon portion 3 ′ via the relay tube 4. The injection of the conductive liquid is performed until the balloon portion 3 ′ inflates and comes into close contact with the surface of the lumen of the ventricle 1. Further, it is preferable that the conductive liquid be injected while being heated to, for example, about 42 ° C.

Subsequently, the microwave probe 6 is inserted into the ventricle 1 through the guide sheath 2, and the antenna portion 6 'at the distal end portion is pushed into the balloon portion 3' arranged earlier from outside. Since the balloon portion 3 'is formed of a sufficiently inflatable flexible material, the outer peripheral surface of the balloon portion 3' comes into close contact with the outer peripheral portion of the antenna portion 6 '. When the microwave oscillator 8 is operated in this state, the microwave is transmitted to the microwave probe 6 via the relay cable 7, and the microwave is radiated from the antenna portion 6 'formed at the tip.

In the first embodiment of the heat treatment apparatus, the affected area 9 formed in a wide area such as the entire surface of the lumen surface of the ventricle 1, for example.
The balloon portion 3 'is in close contact with the entire surface. Further, the balloon portion 3 'itself functions as a heating element by the heated conductive liquid. As a result, the entire affected area 9 over a wide area is uniformly heated. Further, the conductive liquid in the balloon portion 3 'is continuously heated for a desired time by the radiation of the microwave, and the microwaves passing through the conductive liquid heat the tissue of the affected area 9 uniformly. Therefore, it is possible to heat the wide inner surface of the ventricle 1 very efficiently and uniformly.

Further, since the balloon-attached tube 3 and the microwave probe 6 are formed in separate structures that can be individually inserted, even if the balloon portion 3 'is damaged due to deterioration or the like, only this balloon-attached tube 3 is used. Need only be replaced, and the expensive microwave probe 6 can be used repeatedly, which is extremely economical.

[Embodiment 2] (Configuration) FIG. 2 shows a second embodiment of the heat treatment apparatus according to the present invention which is suitable for heat treatment of the inner uterus. The heat treatment apparatus according to the present embodiment has an inner opening 2 in the uterus 11 which is a body cavity through the vagina and the cervix which are lumens opened to the body surface.
a guide sheath 2 into which a is inserted, and the guide sheath 2
And a tube 3 with a balloon inserted from the outside opening 2b. The balloon-attached tube 3 has a balloon portion 3 'at the distal end, the relay tube 4 is connected to the proximal end, and the liquid injection connected to the proximal end of the connection tube 4 as in the first embodiment. By means of the pump 5, liquid can be injected into the balloon 3 'and discharged therefrom.

Further, the heat treatment apparatus includes an endoscope 12 together with the microwave probe 6 inserted through the outer opening 2b of the guide sheath 2. The microwave probe 6 has an antenna section 6 'at the tip and an antenna section 6'
And a microwave shield 13 disposed on the outer peripheral surface on the opposite side of the microwave radiating surface. The microwave is transmitted from the microwave oscillator 8 via the relay cable 7 connected to the base end. Further, the endoscope 12 is connected to a light source device 15 via a cable extending from the vicinity of the eyepiece unit 14 disposed at the base end, and can illuminate the inner surface of the uterus. For this reason, it is preferable that the balloon portion 3 'and the liquid injected into the balloon portion 3' are transparent.

(Function) When performing heat treatment on the inner surface of the uterus by the heat treatment apparatus of the present embodiment, the guide sheath 2 is inserted through the vagina, and the inner opening 2 a is arranged in the uterus 11. Thereafter, the balloon-equipped tube 3 is inserted into the lumen of the guide sheath 2 from the outer opening 2b, and the balloon 3 'is placed in the uterus 11. Subsequently, the liquid injection pump 5 is started, and the balloon portion 3 'is inflated by injecting a transparent conductive liquid into the balloon portion 3', and the uterus 11
In close contact with the inner wall surface or lumen surface. At this time, the conductive liquid is injected while being heated to, for example, about 42 ° C.

Subsequently, the endoscope 12 is inserted into the uterus 11 through the outer opening 2b of the guide sheath 2, and is pushed into the balloon portion 3 'which has been inflated with the conductive liquid from the outside. Further, the microwave probe 6 is connected to the guide sheath 2.
Is inserted into the uterus 11 through the outer opening 2 b of the endoscope 12.
Similarly, the tip is pushed into the balloon portion 3 '.
The microwave probe 6 is pushed into the previously inserted balloon portion 3 ', and is closely attached so that the outer peripheral surface is covered with the balloon portion 3'. At this time, the position of the diseased part 9 is confirmed through the eyepiece part 14 of the endoscope 12, and the antenna part 6 '
Is directed toward the affected part 9.

In this state, the microwave oscillator 8 is operated to transmit the microwave to the microwave probe 6, and the microwave is radiated toward the affected part 9 from the antenna 6 ′ formed at the tip of the microwave probe 6. . The microwave shield 13 disposed on the opposite side of the microwave radiating surface of the antenna section 6 ′ prevents the other side, for example, a normal site from being irradiated with the microwave.

According to the heat treatment apparatus of the present embodiment, the balloon 3 'in close contact with the surface of the uterine cavity including the diseased part 9 generates heat at a higher temperature, particularly in the conductive liquid at the part in contact with the diseased part 9, and As a result, the tissue of the diseased part 9 is heated to a higher temperature than the normal part. Further, similarly to the first embodiment, the conductive liquid is continuously heated for a desired period of time by the radiation of the microwave, and the affected part 9 is heated by the microwave passing through the conductive liquid. Can be efficiently and easily heated. Since the balloon-attached tube 3 and the microwave probe 6 are formed in separate structures that can be inserted individually, when the balloon portion 3 'is damaged, only the balloon-attached tube 3 can be replaced.

In FIG. 2, a perspective rigid endoscope is described as the endoscope 12. However, the present invention is not limited to this, and an endoscope of an appropriate type such as a side-view type or a direct-view type may be used. Is possible.

Third Embodiment (Configuration) FIG. 3 shows a third embodiment of the present invention. As shown in the figure, the heat treatment apparatus of the present embodiment is suitable for heat treatment of the bladder inner cavity surface, and is inserted through a lumen, ie, a urethra, toward a bladder 21 which is a body cavity; And a microwave probe 6 also inserted from the outer opening 2b. The balloon-attached tube 3 is connected to a liquid injection pump 5 via a relay tube 4, and the microwave probe 6 is connected to a microwave transmitter 8 via a relay cable 7.
It has two antenna sections 6 '.

(Function) When the heat treatment apparatus of the present embodiment is used to heat the bladder lumen surface, the guide sheath 2 is inserted into the bladder through the urethra. Thereafter, the tube 3 with a balloon is inserted into the lumen of the guide sheath 2 through the outer opening 2b, and is protruded from the inner opening 2a of the balloon portion 3 'to be disposed in the bladder 21.

Subsequently, the liquid injection pump 5 is activated to inject the conductive liquid into the balloon portion 3 ', so that the balloon portion 3' is inflated and brought into close contact with the bladder lumen surface. At this time, the conductive liquid is injected while being heated to a desired temperature of, for example, 42 ° C. Then microwave probe 6
Is inserted into the bladder 21 from the outer opening 2b of the guide sheath 2, and is pushed into the balloon portion 3 'arranged earlier.
The microwave probe 6 is pushed into the previously inserted balloon 3 ', and adheres closely so that the outer peripheral surface of the antenna section 6' is covered with the balloon section 3 '. In this state, the microwave oscillator 8 is operated to transmit the microwave to the microwave probe 6, and the microwave is radiated from the antenna 6 'formed at the tip of the microwave probe 6.

According to the heat treatment apparatus of the present embodiment, the balloon portion 3 'is in close contact with the entire affected area 9, for example, over the entire surface of the bladder cavity, and the balloon portion 3' is heated to a conductive property. Heat is generated by the liquid, whereby the affected area 9 is uniformly heated. In addition, the conductive liquid is continuously heated for a desired time by the radiation of the microwave, and the affected part 9 is heated by the microwave passing through the conductive liquid.

Since the microwave probe 6 branches the microwave transmission line at the distal end to form two antenna portions 6 ', the entire liquid in the balloon portion 3' is uniformly and efficiently heated. Furthermore, microwave radiation to the affected part 9 can be performed more efficiently.

The number of branches of the antenna section 6 'may be three or more. As in the case of the second embodiment, the position of the affected part 9 may be confirmed using an appropriate endoscope, and the arrangement position of the antenna unit 6 ′ may be adjusted according to the position of the affected part 9.

In each of the above embodiments, the microwave probe is pushed into the balloon 3 'after the conductive liquid is injected into the balloon 3'. However, the present invention is not limited to this. If the balloon portion 3 'can be tightly covered by covering the outer peripheral surface of, for example, after the antenna portion 6' is arranged at a required position, the pump 5 can be started to inject a liquid into the balloon portion 3 '. It is.

[0025]

As is clear from the above, according to the heat treatment apparatus of the present invention, the balloon inserted into the living body cavity through the cylindrical body is brought into close contact with the entire inner wall of the cavity, so that the inside of the balloon is radiated by microwave radiation. Is uniformly heated, and a part of the radiated microwave penetrates the entire wall tissue using the liquid as a medium, so that a wide area of the cavity wall can be easily and uniformly heated at once. Thereby, the operation time is shortened, and the burden on the patient and the operator is reduced.

Further, since the balloon and the microwave probe have a separate structure in which they can be inserted separately, even if the balloon is damaged due to deterioration, only the tube with the balloon is replaced, and an expensive microwave probe can be used. It can be used repeatedly and is very economical.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a heat treatment apparatus according to a first embodiment of the present invention.

FIG. 2 is an explanatory view of a heat treatment apparatus according to a second embodiment of the present invention.

FIG. 3 is an explanatory view of a heat treatment apparatus according to a third embodiment of the present invention.

[Explanation of symbols]

2 ... guide sheath, 3 ... tube with balloon, 3 '...
Balloon part, 5 ... pump for liquid injection, 6 ... microwave probe, 6 '... antenna part.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takeaki Nakamura 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Industrial Co., Ltd. (72) Inventor Satoshi Homma 2-43-2 Hatagaya, Shibuya-ku, Tokyo No. Within Olympus Optical Co., Ltd. (72) Inventor Masaaki Ueda 2-43-2 Hatagaya, Shibuya-ku, Tokyo F-term within Olympus Optical Co., Ltd. (reference) 4C060 JJ29 4C082 MC01 ME05 ME24 4C099 AA01 CA13 CA16 EA08 GA30 JA11 LA03 LA07

Claims (2)

[Claims] 1. A tubular body having an inner opening that can be inserted into a living body cavity and opens into the living body cavity and an outer opening that opens outside the body, and a balloon that can be inserted into the tubular body. A heat treatment apparatus comprising: a tube; and a microwave radiating probe that can be inserted into the cylindrical body. The balloon-equipped tube and the microwave radiating probe can be individually inserted from the outer opening. . 2. The heat treatment apparatus according to claim 1, wherein the microwave radiation probe has a plurality of microwave radiation parts.