JPH06134035A - Hyperthermia device - Google Patents

Abstract

PURPOSE:To enhance the insertion properties of an applicator and to prevent the damage of the wall of the selom by forming a groove part forming a thin- walled part to an elastic bag state covering an electrode part along the axial direction of the applicator. CONSTITUTION:Thermocouples 20a, 20b are provided to the outer surface of an elastic bag 9 as temp. detection means along the axial direction of a multi- lumen tube 2 and the channel holes formed in the multi-lumen tube 2 are allowed to communicate with each other to be connected to a thermocouple connector. Groove parts 22a, 22b are formed to the inner surface of the elastic bag 9 along the axial direction of the multi-lumen tube 2. When cooling water is drained from a cooling water outlet connector, the elastic bag 6 is contracted at the parts of the thin-walled groove parts 22a, 22b being ridgelines and, therefore, the insertion properties of the applicator in the selom can be enhanced without hooking the thermocouples 20a, 20b with the wall of the selom when the applicator is inserted in the selom and the damage of the wall of the selom due to the thermocouples 20a, 20b can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hyperthermia treatment apparatus which is used, for example, to heat and treat cancer cells in a body cavity.

[0002]

2. Description of the Related Art Generally, a thermotherapy device of this type is disclosed, for example, in U.S. Pat. No. 4,662,383 and Japanese Patent Publication No. 2-419.
As described in Japanese Patent Publication No. 71, etc., an elastic bag-shaped body made of silicone rubber or the like is provided on the outer periphery of the tip of an applicator to be inserted into the body cavity of a patient, and the elastic bag-shaped body is inflated with an electrolyte solution. Then, the tip of the applicator is fixed in the body cavity. In addition, this type of hyperthermia treatment apparatus has an electrode section at the tip of an applicator that is covered with an elastic bag-like body, and high-frequency power is applied to this electrode section to bring the affected area in the body cavity to about 43 ° C. It is designed to be heated.

[0003]

By the way, on the surface of the elastic bag-like body of such a thermotherapy device, temperature detecting means such as a thermocouple is arranged along the axial direction of the applicator for the purpose of measuring the temperature of the affected area. It is provided in a straight line. Therefore, in such a thermotherapy device, the elastic bag-shaped body contracts with the temperature detecting means as the apex, so that the temperature detection provided on the surface of the elastic bag-shaped body when the applicator is inserted into the body cavity. There was a problem that the device was easily caught on the wall of the body cavity.

The present invention has been made in view of the above problems, and an object thereof is to provide a hyperthermia treatment apparatus capable of improving the insertability of an applicator into a body cavity.

[0005]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a surface of an elastic bag-like body which encloses an electrode portion provided at the tip of an applicator to be inserted into a body cavity. In a thermotherapy device which is provided with a detecting means in a linear shape along the axial direction of the applicator, a thin-walled portion is provided on the surface portion of the elastic bag-shaped body apart from the temperature detecting means along the axial direction of the applicator. It is characterized in that it is formed into a linear shape.

[0006]

In the present invention having such a structure, the elastic bag-shaped body contracts with the thin portion as the apex, so that the insertability of the applicator into the body cavity can be improved.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The first to third embodiments of the present invention will be described below with reference to FIGS.

FIG. 1 is a view showing a first embodiment of the present invention, in which 1 indicates an applicator of a thermotherapy apparatus according to the first embodiment of the present invention. The applicator 1 is inserted into the body cavity of a patient to heat the affected area to about 43 ° C. The multi-lumen tube 2 forming the applicator body has an electrode portion 3 as a heating means on the outer periphery of the distal end thereof. Is provided.

As shown in FIG. 2, the electrode portion 3 is formed by winding a linear conductor 4 such as a copper wire around the peripheral surface of the multi-lumen tube 2 in a coil shape. Power is supplied to both ends of the linear conductor 4. One end of each of the cables 5 and 5 (see FIG. 1) is connected. These power feeding cables 5 and 5 feed high frequency power from a high frequency power supply device (not shown) to the linear conductor 4, and the other ends of the power feeding cables 5 and 5 led out from the rear end of the multi-lumen tube 2 are connected to the power feeding cables 5 and 5. A high frequency connector 6 is provided. The surface of the linear conductor 4 is shown in FIG.
As shown in, the insulating coating material 8 such as polyparaxylene is 5μ.
It is vacuum-deposited with a certain thickness.

Further, elastic bag-like members 9 made of silicon rubber or the like are provided on the outer peripheral portion of the distal end of the multi-lumen tube 2 with both ends fixed to the peripheral surface of the multi-lumen tube 2. The elastic bag-like body 9 encloses the electrode portion 3, and the cooling water inlet 10 and the cooling water drainage port 11 (see FIG. 3) are provided on the peripheral surface of the multi-lumen tube 2 covered with the elastic bag-like body 9. 1) is formed. The cooling water introducing port 10 and the cooling water draining port 11 are connected to the rear end of the multi-lumen tube 2 and the cooling water introducing tube 12 is provided.
And a cooling water drain tube 13 respectively, and a cooling water inlet connector 14 and a cooling water outlet connector 15 are provided at the rear ends of the cooling water introducing tube 12 and the cooling water drain tube 13.

A linear conductor lead-out hole 16 and a linear conductor lead-in hole 17 are formed on the peripheral surface of the multi-lumen tube 2 covered with the elastic bag-like body 9 as shown in FIG. The linear conductor lead-out hole 16 is closed by a heat-shrinkable tube 18 so that cooling water does not enter inside, and the linear conductor lead-in hole 17 is filled with a filler so that cooling water does not enter inside. Further, the terminal end of the linear conductor 4 is fixed to the peripheral surface of the multi-lumen tube 2 by a heat shrinkable tube 19.

Thermocouples 20a and 20b as temperature detecting means are provided on the outer surface of the elastic bag 9 along the axial direction of the multi-lumen tube 2. These thermocouples 20a and 20b measure the temperature of the affected area, and are inserted into the channel holes formed in the multi-lumen tube 2 and connected to the thermocouple connector 21.

Grooves 22a and 22b are formed on the inner surface of the elastic bag 9 along the axial direction of the multi-lumen tube 2, as shown in FIG. These grooves 22
Reference characters a and 22b are for forming a thin portion on the inner surface of the elastic bag-like body 5, and are provided between the thermocouples 20a and 20b.

The hyperthermia treatment apparatus according to the first embodiment of the present invention having the above-described structure is configured such that the cooling water (not shown) introduced into the elastic bag 9 from the cooling water inlet connector 14 is cooled. When the water is drained from the outlet connector 15 to the outside, the elastic bag-shaped body 9 has thin groove portions 22a and 22b as shown in FIG.
Contract as the ridgeline. Therefore, when the applicator 1 is inserted into the body cavity, the thermocouples 20a and 20b do not get caught on the wall of the body cavity, the insertability of the applicator 1 into the body cavity can be improved, and the thermocouple 20a , 20b to prevent damage to the body cavity wall.

Although the grooves 22a and 22b are provided on the inner surface of the elastic bag-shaped body 9 in the first embodiment described above, the grooves 22a and 22b are formed on the outer surface of the elastic bag-shaped body 9 as shown in FIG. Even if it is provided, the same effect can be obtained.

Further, in the first embodiment described above, the linear conductor 4 forming the electrode portion 3 is wound in a coil shape from the tip side of the multi-lumen tube 2 toward the proximal side.
As shown in FIG. 4, the linear conductor 4 is linearly drawn from the linear conductor drawing hole 16 formed in the peripheral surface of the multi-lumen tube 2 toward the tip side of the multi-lumen tube 2, and then the tip of the multi-lumen tube 2 is drawn. You may wind in a coil shape from the side toward the hand side.

Further, in the first embodiment described above, the linear conductor 4
Although the surface of the linear conductor 4 is insulation-coated with an insulating coating material 8 such as polyparaxylene, the surface of the linear conductor 4 may be coated with a corrosion-resistant conductive material 23 such as gold or stainless steel as shown in FIG.

FIG. 9 is a diagram showing a third embodiment of the present invention. In this third embodiment, groove portions 22a,
22b, 22c, 22d are provided at substantially equal intervals in the circumferential direction of the elastic bag body 9.

In the third embodiment of the present invention thus constructed, when the cooling water (not shown) introduced into the elastic bag-like body 9 is drained to the outside, the elastic bag is formed as shown in FIG. The groove 9a, 22b, 22c, 22d in which the body 9 is thin
Since it contracts with the ridge line as the ridge line, the same effect as that of the first embodiment described above can be obtained. The groove portions 22a, 22
b, 22c and 22d are elastic bag-like members 9 as shown in FIG.
It may be provided on the outer surface of.

[0020]

As described above, according to the present invention, since a plurality of thin-walled portions are linearly formed along the axial direction of the applicator on the surface portion of the elastic bag-like member which is separated from the temperature detecting means, The elastic bag-shaped body can be contracted with the thin-walled portion as the apex, and when the applicator is inserted into the body cavity, the temperature detecting means does not get caught on the body cavity wall, so the applicator can be inserted into the body cavity easily. It is possible to provide a thermotherapy device capable of improving the above.

[Brief description of drawings]

FIG. 1 is a diagram showing a schematic configuration of an applicator of a thermotherapy apparatus according to an embodiment of the present invention.

FIG. 2 is a diagram showing a structure of a tip portion of the applicator shown in FIG.

FIG. 3 is a cross-sectional view orthogonal to the axial direction of the applicator tip portion including the elastic bag-shaped body shown in FIG.

4 is a cross-sectional view of the linear conductor shown in FIG.

5 is a view showing a state in which the elastic bag-shaped body shown in FIG. 3 is contracted.

FIG. 6 is a cross-sectional view showing the second embodiment of the present invention and orthogonal to the axial direction of the applicator tip portion including the elastic bag-shaped body.

FIG. 7 is a diagram showing a modification of the electrode portion shown in FIG.

FIG. 8 is a cross-sectional view showing a modified example of the linear conductor shown in FIG.

FIG. 9 is a cross-sectional view showing the third embodiment of the present invention and orthogonal to the axial direction of the applicator tip portion including the elastic bag-shaped body.

10 is a view showing a state in which the elastic bag-shaped body shown in FIG. 9 is contracted.

FIG. 11 is a cross-sectional view showing a fourth embodiment of the present invention and orthogonal to the axial direction of the applicator tip portion including the elastic bag-shaped body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Applicator, 2 ... Multi-lumen tube (applicator main body), 3 ... Electrode part, 4 ... Linear conductor, 9 ... Elastic bag-shaped body, 20a, 20b ... Thermocouple, 22a-22d ... Groove part.

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[Procedure amendment]

[Submission date] March 17, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction content]

As shown in FIG. 2, the electrode portion 3 is formed by winding a linear conductor 4 such as a copper wire around the peripheral surface of the multi-lumen tube 2 in a coil shape. Power is supplied to both ends of the linear conductor 4. One end of each cable 5 (see FIG. 1) is connected. These power supply cables 5 supply high frequency power from a high frequency power supply device (not shown) to the linear conductor 4, and a high frequency connector 6 is provided at the other end of the power supply cable 5 led out from the rear end of the multi-lumen tube 2. It is provided. As shown in FIG. 4 , an insulating coating material 8 such as polyparaxylene is vacuum-deposited on the surface of the linear conductor 4 with a thickness of about 5 μm.

Claims (1)

[Claims] 1. A surface of an elastic bag-like body that encloses an electrode portion provided at a tip portion of an applicator to be inserted into a body cavity,
In a thermotherapy device which is provided with a temperature detecting means linearly along the axial direction of the applicator, a thin-walled portion is provided in the axial direction of the applicator on a surface portion of the elastic bag-like body which is separated from the temperature detecting means. A thermotherapy device characterized by being formed linearly along the line.