JPS622964A - Applicator for warming medical treatment - 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 Application of Industry-1-] The present invention relates to an applicator for heating therapy, and particularly to an applicator for heating therapy for heating a predetermined location of a living body using electromagnetic waves. [Conventional technology] In recent years, heating therapy

A treatment method using ``hyperthermia-1'' has been in the spotlight, in particular, by continuously heating malignant tumors at around 43℃ for 1 to 2 hours, and repeating this with ``Ashidama-1''. There have been several research reports showing that this can inhibit the regenerative function of cancer cells and at the same time kill many of them (total of 41) 1 and control vol. 1.. 22. No. 10
>. This type of heating therapy includes a general heating method and a local heating method. Among these, methods using electromagnetic waves, methods using electromagnetic induction, methods using ultrasonic waves, etc. have been proposed as local heating methods for selectively warming only the cancerous tissue and its surroundings. On the other hand, Invention 4y et al. have proposed and are conducting research on the effectiveness of heating treatment for cancer not only on the surface of a cow's body but also deep within the body using electric theta waves. In this case, and <
a:= Regarding the heating applicator for sending electromagnetic waves into the living body, the inventors have discovered that the energy of electromagnetic waves is 11
Due to the necessity of making 7 bundles, we have traditionally installed a radio wave lens (1
iii. Specifically, as shown in FIG. 13, the applicator 1 is
A case body 3 that functions as an m-wave tube, and an electromagnetic wave power supply part 2 provided in a part of the case body 3.
and a radio wave lens section 4 provided in the other end.The output stage of this radio wave lens section 4 is equipped with a cooling plate 5 to prevent the surface of the living body A from overheating.
At the same time, the cooling plate 5 can be cooled by cooling water W. [Problems to be Solved by the Invention] However, in such a conventional example, the energy loss of electromagnetic waves within the applicator 1 is relatively large. For this reason, the inventors have already proposed filling the applicator with oil that reduces the attenuation of electromagnetic waves (Japanese Patent Application No. 59-8G92-1Y). On the other hand, even in this oil-filled applicator, reflection of electromagnetic waves occurs due to impedance mismatch with the radio lens part, cooler + part, and even the hot part side of the force 11.
As a result, a standing wave is generated in the MT, the 11-wave power feeding unit, and the landmine magnetic wave transmission system, which causes the electromagnetic wave transmission system to overheat and generate a significant amount of energy (111). In order to improve this inconvenience, some attempts have been made to fill a matching member between the radio wave lens section and the electromagnetic wave power supply section. However, even in this case, since the matching member is fixed, it is difficult to deal with impedance changes at multiple locations and impedance changes due to shape changes that occur with selective use of the radio wave 1771 portion. The impedance matching cannot be achieved, which results in the inconvenience. [Object of the Invention] The present invention improves the disadvantages of the conventional example, and makes impedance matching particularly between the electromagnetic wave power supply section and the radio wave lens section compatible with changing conditions when impedance mismatching occurs at multiple locations. The first objective of the present invention is to provide an applicator for heating therapy that is easy to operate and can be used in a sufficient manner. , a case body is provided with an electromagnetic wave feeding part at one end, and a radio wave lens part and an electromagnetic wave emitting end part at the other part. In addition to filling an insulating oil with low attenuation, a fluid storage means (jt) is provided on the - part of the inner wall of the case body in the part filled with this insulating oil, and a fluid storage means (jt) is installed to connect the electromagnetic wave power supply part and the radio wave lens part of the case body. A stub matching means is provided between the two, and a stub matching means is provided between the
- A cylinder part with an open end, a piston member that reciprocates inside this cylinder part and has a suitable oil hole, and a part of this piston member that is fixed. A predetermined I! formed on the case body. l
A stub bar is attached so that it can be loosely inserted into the case body and protruded into the case body, and a stub bar is installed in the former part of the cylinder part so that it rotates and urges the piston part A to reciprocate. The structure is such that it is formed by a waterproof screw-type drive machine (1 motor), and this aims to achieve the above-mentioned objective II. The electromagnetic wave propagates inside the case body and goes to the outside from the end of the electromagnetic wave; In this case, according to the present invention, the adjustable stub matching means forms a reflected wave r' with respect to the electromagnetic wave feeding section, and the stub matching means is adjusted so that r
'·-r (equal amplitude and opposite phase). In this way, the reflections r and r' cancel each other out, so that there is no reflection when viewed from the electromagnetic wave feeding section, and impedance matching to the load side is completely established. Therefore, reflected waves are almost eliminated, and the accompanying energy 1.5 is also significantly suppressed. In this case, impedance matching is achieved by rotating the screw-type clothing mechanism. Specifically, when the screw-type forcing mechanism is rotated by an external force, the piston member within the cylinder portion moves together with the stub bar without pushing out the oil. In this case, the screw-type forcing mechanism is kept rotating at a fixed position, and the oil flow i[tl hole acts to prevent almost any oil from flowing into the GJ gauge body in the cylinder section. Further, since the screw type clothing mechanism is waterproof, even during operation 1, if oil leaks to the outside, it is effectively rain-proofed. [Embodiment of the Invention] An embodiment of the present invention will be described below with reference to FIGS. 1 to 12. First, in FIG. 1, numeral 10 indicates a case body having a function as a waveguide. This case body 10 has a box shape as is clear from FIGS. 2 and 3, and has an electromagnetic wave power supply unit 11 at one end thereof, and a radio wave lens unit 12 at the other end. Further, a stub tuner mechanism 63 as a stub matching means for electromagnetic wave matching is provided in the intermediate portion. Furthermore, the right end of the radio wave lens section 11i in the position O in FIG.
, a cooling mechanism 15 for cooling the surface of the living body is installed so as to cover the electromagnetic wave radiation end 14 from the outside. A waveguide 10A, an excitation antenna 11Δ protruding from the center of the feeder waveguide 10, and a waterproof coaxial connector 113 for electromagnetic waves connected to the excitation antenna IIA. As a result, the electromagnetic waves sent through the coaxial connector 11.8 are efficiently introduced into the case body]0. , 1j; Insulating oil with low attenuation of electromagnetic waves (hereinafter referred to as 1-oil-1)) is filled with IOC, including the installation location of 1. 1. OD is , shows an oil-filled partition plate made of a dielectric material that seals in the oil IOC.
6, and each stuff bar 66 is connected to the case body 1.
The appropriate hi is formed to be able to protrude individually from within 0. To explain this in more detail, each of the two stub tuner mechanisms of the stub tuner mechanisms 63 has one end opened 1-1.
A predetermined through hole 10S formed in the case body 10, which is fixed to a part of the cylinder part 64 and a screw member 65 that reciprocates within the cylinder part 64, is loosely inserted into the case body. It is constituted by a stub bar 66 that is protruded from WfIt, and a screw-type loading mechanism 67 that is rotatably installed in the opening of the cylinder portion 64 and urges the piston member to reciprocate. Of these, the screw mechanism 67 fixes the drive screw portion 67Δ and locks the drive portion +A67B which is allowed to rotate and is attached to the cylinder portion 64, and this drive portion 4A6713 from detaching to the outside. and a seal member 67I attached to the drive member 6713. As shown in FIG. 14, two drive small holes 67 formed in the drive member 67T3
When the drive member 67B is rotated through B and 67E, the drive screw portion 67A integrated therewith rotates without changing its position, so that the piston member 65 is moved into the cylinder by the rotational reaction force. The protruding amount of the stub bar 66 integrated with the piston member 65 into the case body 10 is adjusted appropriately. 64A, 65
A indicates each oil flow hole. Further, a fluid storage means 76 is provided at the left end portion of the case body 10 as viewed from LJ in FIG. This fluid storage means 76 is located at the left end of the case body 10 in FIG. Cut a 1"1 fine gold MM76Δ between the storage part 10F and the introduction part 377-wave 9γi'I OA part, and insert it from the outside into the fluid storage ζB1+10E (
Then, a cup-shaped section 1llj with a concave cross-section with a convex part in the center: material ζ1 (4476B and the central part of this cup-shaped soft part +476B from the I side to the n"I RL electromagnetic power supply part 11 side Coil spring 76C that gently presses constantly
And, this ':1 is +14 by applying the force 7 [i C and the above-mentioned force + 4' 7 (lid part A761 that attaches i B to the case body 10)] has been completed. 76Ei indicates the coil spring 76C, and 76F indicates the hole formed in the lid member 76D. Here, the gold 1i'176A is the electromagnetic wave power feeding part 1]
Therefore, if it is functionally equivalent to this, even if a plurality of small holes are installed directly on the inner wall of the electromagnetic wave power supply section 11, there are countless holes. A plate-like metal part (which may be replaced with a fin) having a small through hole. Therefore, the stub 1-1, the
: In the case of impedance matching based on two factors, 1. For example, even if the filling oil 100 expands in volume due to heat, the fluid accommodation means 7 (i) immediately acts to accommodate the increase in the filling oil IOC. Specifically, the central part of the cup-shaped soft member 76 is compressed by the oil pressure, and the fluid storage part 101 is expanded by this. The cooling mechanism 15 installed in the electromagnetic wave radiation section 14 of the case body 10 efficiently cools the surface of the heating section. To explain the dirt in more detail, there is a cooling mechanism of 1.5 iJ, a retaining board 30 that is integrally fixed to the case body 10,
A cooling liquid inlet 308 in the shape of a ke Ij formed in a part 11 of this retaining board 30 and a corresponding part 2 corresponding to the kneading
The coolant outflow r''T3()B of the same shape formed on the other part of the pg board 30, each of these coolant inflow/outflow D30A, 30B, and the electromagnetic wave radiation end 1
[Opening rl of 4 ] 30C of the waterproof insulation disengagement groove 11-groove 30C carved so as to surround the OE, and each of these coolant inflow LI30A and cold Jirl liquid outflow L]30r
coolant guides 31 and 32 that are connected and fixed to each other, a flat insulating film member 33 that is disposed so as to cover substantially the entire surface of the electromagnetic wave radiation end 14, and this insulating film member 33.
and a frame plate 34 that is detachably attached to the anchoring board 30 with its surroundings waterproofed. Among these, the insulating film member 33 has a dish shape with a convex shape on the outside and an opening L1 on the inside, and is made of a film-like dielectric material with low attenuation of electromagnetic waves. Then, coolant inlet 3OA
The cooling water flowing in from the insulating film member 33 flows inside the insulating film member 33 and is sent out to the cooling liquid outlet 30B as indicated by the arrow f in FIG. In this embodiment, the radio wave lens section 12 installed at the right side of the case main body 10 in the right part of FIG. It is formed into a box shape with two sides facing each other open]3I'', and the entire body is housed in the case main body 10 in a detachable manner.To describe this further, the radio wave lens Part 12 is
A plurality of metal plates 4 (1, 40...
1- and a frame body 41. As shown in the figure, the distance between each of the metal plates 40 is a dimensional width α at the center. is the maximum dimension, and the side wall 41A of the frame 41! α1゜α2. Dimension width of α3 (
However, α0〉α1 〉α2〉α,) is arranged, and as a result, each metal plate 40 as a whole exerts a predetermined lens effect in one direction against incoming electromagnetic waves as shown by the dotted line in FIG. It is set up so that it can be done. Moreover, each of the metal plates 40 has a shape in which the center of the end of the electromagnetic wave power supply section 11 is cut into a bow shape. Therefore, a predetermined lens effect can also be exerted in the other direction, as shown in FIG. 10, for the same incoming electromagnetic waves as described above. It is set to 1. FIG. 12 shows the right side view of FIG. 33 is removed). In this case, [1; 1 radio wave receiver] 2 is the
〃The wave incidence side and the electromagnetic wave emission side are both open, and the front j4\L7 cold J, 11 aircraft 1; f& 1
．． The cooling liquid in 5 flows into and out of the radio lens part very easily. Further, in FIG. 1, 42 does not indicate +t-to for connecting the radio wave lens portion I2 to 11. The box-shaped radio wave lens part 12, which is formed to be detachable as described above, is actually made up of several tens (lU (+iii)) depending on the affected area.
It is planned that J5E will be used as appropriate. Furthermore, the electromagnetic wave power supply section 11 of the radio wave lens section 12
On the side, there is a cooling liquid guide connected to the cooling liquid guide 1'32 for flowing out the cooling liquid.
Equipped with a bubble escape means L7 and a piping 39 with a relatively small diameter, air bubbles generated during treatment are directly sucked out from the coolant pipe F32 by negative pressure accompanying the flow of the coolant. It is now possible to The applicator 50 for heating therapy in this embodiment is formed as shown in steps 1 and 2, and the support members 1 (1G, ) on both sides are shown in FIG. 12 (
, As shown, the inverted U-shaped applicator holding stage 5]
The up and down rotational movement is maintained as shown by arrows C and D. This applicator holding means 51 is supported by a support device 114 (not shown) and is configured to be rotatable as indicated by arrows E and F, thereby allowing it to take any posture suitable for the heating section. It looks like this. Next, the overall operation of the first embodiment will be explained. First, one excitation antenna 1. The electromagnetic waves outputted from the IA into the case body 10 by bending are sent directly to the radio receiver section 12 without being attenuated in the oil IOC. Then, in the process of propagating through this radio wave lens section 12, the phase of the outer part advances from that of the central part, so that when it is radiated from the radio wave lens section 12, it becomes an electromagnetic wave and a source effect is observed. It will be done at the end of the year or at the same time. The electromagnetic waves 5 generated by this lens are transmitted inside the cooling machine 15.
t(t) After that, it is propagated from the surface to the living body side, or during this time, there is a partial violation on the surface of the body 71, and then the heating of the surface and deep part of the body is started.In this case, the surface of the body 71 is heated as described above. The cooling mechanism 15 that has On the other hand, the anti'1I=1 wave on the surface of the 4f body described in ttii is due to the difference in impedance of the electromagnetic wave transmission system.
Such impedance changes also occur on the incident side of the radio wave reflection section 12. Therefore, the excitation antenna] ], A
When viewed from the side, reflection of electromagnetic waves from both the aforementioned radio wave lens section 12 and the surface of the heating section can be detected. in this case,
By appropriately adjusting the squib tuner mechanism 63, impedance matching to the radio wave 1771 section 12 and the heating section side described above can be immediately achieved, and this suppresses the generation of reflected electromagnetic waves, resulting in the highest electromagnetic energy efficiency. It is often sent into the heating section. In other words, for electromagnetic waves that propagate within the case body 10 as a waveguide from the electromagnetic wave power supply part j1 and are radiated to the outside from the electromagnetic wave radiation end part 14, the electromagnetic waves are first transmitted to the radio wave lens part 12.
Then, from the biological surface. A counterwave r is generated based on each impedance mismatch. In this case, according to the present invention, the reflected wave r'
At the same time, by adjusting Miki's stabilization mechanism 63, it is set to r'--r (equal amplitude, <opposite phase). In this way, the reflections r and r' cancel each other out, so that there is no reflection when viewed from the electromagnetic wave power supply section 11, and impedance matching to the load side is completely established. Therefore, there are almost no reflected waves, and the energy loss associated with it is also greatly suppressed. In this case, impedance matching is performed by rotating the screw drive mechanism 67. Specifically, 6 years old, evening.
When the screw type drive mechanism 67 is rotated by the hand, the piston part inside the cylinder part fi d) (
i 5 moves with the stub bar fi 6. In this case, since the screw type drive unit I467 is kept rotating at a fixed position, almost no oil in the cylinder portion 64 flows into the case body 10. Further, since the screw type drive mechanism 67 is waterproof, oil leakage to the outside even during operation can be effectively prevented. Here, the impedance matching by the stub tuner mechanism 13 is specifically displayed on the first stage of reflected electromagnetic wave display (not shown) of the directional coupler used in connection with the rotation shaft ML connector 11-3. The ratio of reflexes is determined by the power of
This is done by the operator. Apart from the impedance matching by the stub chip and inner mechanism 63, the impedance of the ita wave transmission system, which is slightly charged inside the case body 10, is matched. 16 energy per member is 41'', and as a result of continuous use of the applicator, the case body 10 and the filled oil 10C are constantly heated, resulting in thermal expansion of 9. This will become a problem. If you leave this unattended, for example, oil dog partition 1 x 1, 0 D
However, the above-mentioned lower fluid storage stage 76 acts on this, and the heat 11fi; Easily store increased oil IOC 1. t,j
i. Therefore, in this embodiment, i; l, , I, l; It is possible to set a sufficient heating time for that amount, and it is possible to set a sufficient amount of heating time.
Since there is no need to spend 100 yen, the entire device can be obtained relatively inexpensively.1) Moreover, in this embodiment, especially the stub matching means 63! Since the amount of filled oil 1.0 C pushed out into the case body 10 during the 11 adjustment is a small amount, it is possible to downsize the fluid storage means 76.
There is an advantage that it is possible to completely seal the filled oil, and it is possible to obtain a sealant that is easy to handle as a whole. Note that each of the above embodiments ε. ! :=Tree-&fI stubchi j
, Na Jlt + & 63 has been exemplified, but the present invention does not necessarily apply to this [; [Effects] The present invention is configured and functions as follows.According to this, even if erroneous electromagnetic waves propagate from a plurality of locations toward the electromagnetic wave power feeding section, they can be transferred to the stub matching means Q,
2. It becomes possible to achieve alignment extremely easily, and therefore, even when heating the deep part of a living body, electromagnetic wave energy can be efficiently focused and sent, and therefore deep part heating can be carried out efficiently. Since the stub matching means is waterproof, it is possible to easily and smoothly perform impedance matching while preventing oil leakage inside the case body.Furthermore, the protrusion amount of the stub bar required for impedance matching can be adjusted using a screw type. Since the drive mechanism allows fine adjustment, it is possible to achieve sufficient impedance matching in response to changing conditions.Also, since the screw-type drive mechanism that drives the stub bar is fixed, the oil in the cylinder part is kept within the case body. It is possible to extremely reduce the amount of fluid flowing out to
Introducing an unprecedented and innovative heating therapy applicator in one (
J (can.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view including a coolant guide portion showing an embodiment of the present invention, Fig. 2 is an enlarged detailed view of the stub chner mechanism portion from Fig. 1, and Fig. 3 is the left side of Fig. 1. 4 is a plan view of FIG. 1, FIGS. 5 and 6 are perspective views showing the radio lens part used in FIG. 1, and FIG. 7 is a top view of FIG. The front view from the side, Figure 8 is the ■-■ of Figure 7.
9 is a sectional view taken along line IX-IX in FIG. 8, and FIGS.
12 is an explanatory diagram showing the operation of the first part; FIG. 12 is a perspective view showing the state when the applicator of FIG. 1 is used;
The figure is a perspective view showing a conventional example. 10... Case body, IOC... Insulating oil, 11... Electromagnetic wave power supply section, 12...
Radio waves 1. /ance part, 14... Electromagnetic wave emission i,
74j part, 63... Metabutton 1 nare 1 as stub alignment lower stage 2; ν structure, 64... Syringe part, 6
5...Bis 1 part month, fi 5 A...
・Oil flow hole, 66...Stazohar, 67
・・・・・・(1,'i R movement mechanism, 76...
-Fluid containment means. Patent applicant Makoto Kikuchi (n.) Marmata No. 7F Fig. 8■ No.'?

Claims (1)

[Claims] (1) A case body is provided with an electromagnetic wave feeding section at one end and a radio wave lens section and an electromagnetic wave emitting end at the other end,
In other parts of the case body except for the radio lens part,
Insulating oil with low attenuation of electromagnetic waves is filled, and a part of the inner wall of the case body filled with this insulating oil is provided with a fluid storage means between the electromagnetic wave power supply part and the radio wave lens part of the case body. The stub alignment means is equipped with a cylinder portion having an open end, a piston member that reciprocates within the cylinder portion and is provided with a suitable oil flow hole, and the piston member is provided with a stub alignment means. A stub bar is fixed to a part of the case body and is installed so as to be protruded into the case body by loosely inserting it into a predetermined through hole formed in the case body, and a stub bar is rotatably installed in the opening part of the cylinder part and is attached to the piston. An applicator for heating therapy characterized by being formed with a waterproof screw type drive mechanism that urges a member to reciprocate.