JP2823452B2 - Ultra-high frequency heating treatment equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ultra-high frequency heating treatment apparatus utilizing heat generated by dielectric loss in a high-frequency electric field.

[0002]

2. Description of the Related Art As an effective treatment method for an affected part composed of abnormal cell tissues of a living body such as cancer or other tumors,
Heating therapy using high frequency (hyperthermia) is known. This high-frequency heating therapy, as shown in FIG.
A pair of disk-shaped electrode plates 41 and 42 are attached to the affected part 7 inside the living body 7.
1 is mounted outside the living body so as to sandwich the electrode plates 41 and 4.
The high-frequency energy is supplied from the high-frequency energy generator 15 between the two, and the affected part 71 is heated by the dielectric heating of the affected part 71.
Is to heat.

[0003] In the conventional ultra-high frequency heating treatment apparatus, for example, cooling pads 61 and 62 are provided on the electrode surfaces of the electrode plates 41 and 42 so that the portions of the living body 7 in contact with the electrode plates 41 and 42 are not burned by dielectric heating. Is attached, and another pad configured to circulate a low-loss saline solution from the outside is attached to radiate heat.

[0004]

By the way, the electrode plate 4
When a high-frequency voltage is applied between the electrode plates 41 and 42,
Although a high-frequency electric field is generated between the electrodes 42 and 42, the electrode plates 41 and 42 are disc-shaped and finite, so that the electric flux density of the high-frequency electric field is not uniform on the electrode surface. Is larger than the center of the electrode (hereinafter referred to as an edge effect). For this reason, the heat generation temperature of the part of the living body that is in contact with the peripheral edge of the electrode is higher than that of the part of the living body that is in contact with the central part of the electrode.

[0005] In the conventional ultra-high frequency heating treatment apparatus, when the electrode plates 41, 42 are set on the living body 7, the electrode plates 41, 42 are set during treatment.
42 is fixed in this state, so that the temperature of the living body part in contact with the peripheral edge of the electrode plate via the pads 61 and 62 is 4 times lower than the temperature of the living body part in contact with the center part of the electrode. The temperature may increase by about 5 ° C., and during the warming treatment, the patient may feel unpleasant itching or pain in the living body part in contact with the periphery of the electrode plate, and may change his / her posture. Therefore, the living body 7
And the matching between the load circuit including the HF heating device and
The supply efficiency of high-frequency energy is reduced, and the electric field distribution between the electrode plates 41 and 42 changes, making it difficult to effectively heat and treat only abnormal cell tissue of the diseased part 71.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and suppresses a temperature rise of a living body portion in contact with the peripheral portion of an electrode to reduce discomfort of the living body portion, thereby enabling stable ultra-high frequency heating treatment. It is an object of the present invention to provide an ultra-high frequency heating treatment apparatus.

[0007]

According to the present invention, there is provided an ultrashort-wave heating treatment apparatus for generating a high-frequency electric field between both electrode plates sandwiching a living body, wherein at least one of the two electrode plates is provided with a substantially razor movement mechanism. (Claim 1).

Further, in the above-mentioned ultrashort-wave heating treatment apparatus, the substantially oscillating movement mechanism is supported at a middle position on a base via a spherical bearing so as to be swingable, and at a tip end in an axial direction. A support leg vertically attached with the electrode plate,
Regulating means for regulating the rotation of the electrode plate, and an engaging hole with which the base end of the support leg engages in a state where the support leg is inclined with respect to the normal direction of the base surface, An engaging means comprises an engaging means provided in the base so as to be able to circularly move around the center axis in the normal direction, and a driving means for rotating and driving the engaging means. ).

Further, the present invention provides the above-mentioned ultra-short wave heating treatment apparatus, wherein the above-mentioned substantially oscillating movement mechanism is provided so as to protrude perpendicularly to the surface of the base, and the center of the above-mentioned electrode plate is swingably attached to the tip. A supporting leg, a restricting means for restricting the rotation of the electrode plate, a cylindrical shaft protruding substantially coaxially with the supporting leg substantially at the center of the electrode plate, and an eccentric position with respect to the axis of the supporting leg. An engagement hole for engaging a base end of the cylindrical shaft, the engagement hole being provided in the base so as to be able to circularly move around the axis of the support leg; Driving means for rotating the means (claim 3).

It is preferable that the engaging means is provided so that the eccentric position of the engaging hole with respect to the center of the circular movement can be changed.

Further, in the above-mentioned ultra-short-wave heating treatment apparatus, the above-mentioned substantially oscillating movement mechanism is provided so as to project perpendicularly to the surface of a base, and the center of the above-mentioned electrode plate is swingably attached to the tip. A supporting leg, regulating means for restricting the rotation of the electrode plate, and protrudingly provided on the surface of the base so as to be capable of circular movement around the supporting leg. It comprises contact means which is in contact with the electrode plate in a state inclined with respect to the direction, and driving means for rotating the contact means (claim 5).

[0012]

According to the first aspect of the present invention, at least one of the electrode plates is driven so as to perform a substantially oscillating motion while high-frequency energy is supplied, and the peripheral portion of the electrode plate is close to the living body. Are sequentially reciprocated in the direction of coming and coming from the living body while moving in the circumferential direction. Due to the reciprocating motion of the peripheral edge of the electrode plate, the electric field at the peripheral edge of the electrode plate is disturbed, and the electric field concentration on the peripheral edge of the electrode plate due to the edge effect is prevented. This suppresses a temperature rise in a portion of the living body where the peripheral edge of the electrode plate is in contact, makes the temperature rise uniform in this portion, and prevents the occurrence of unpleasant itching and pain.

According to the second aspect of the present invention, when the engagement means is driven to rotate, the base end of the support leg engaged with the engagement hole is positioned around the center axis in the normal direction on the surface of the base (this support leg). Around the axial direction when the is perpendicular to the base surface),
Thus, the electrode plate at the tip of the support leg performs a circular motion around the central axis in a state of being inclined with respect to the vertical direction of the central axis.
Since the rotation of the electrode plate is restricted with respect to the support leg, the electrode plate performs a substantially oscillating motion by the circular motion of the base end of the support leg. In other words, each point on the peripheral edge of the electrode plate reciprocates in the direction of approaching and separating from the living body while sequentially moving in the circumferential direction at the position closest to the living body without changing the relative position with respect to the living body.

According to the third aspect of the invention, when the engagement means is driven to rotate, the base end of the cylindrical shaft engaged with the engagement hole makes a circular motion around the support leg. Since the rotation of the electrode plate at the tip of the support leg is restricted with respect to the support leg, the electrode plate makes a substantially sneaking motion by the circular motion of the base end of the cylindrical shaft. That is,
Each point on the peripheral edge of the electrode plate reciprocates in a direction approaching and separating from the living body while sequentially moving in a circumferential direction from a position closest to the living body without changing a relative position with respect to the living body.

According to the fourth aspect of the present invention, by changing the eccentric position of the engaging hole with respect to the center of the circular motion, the inclination angle of the support leg or the cylindrical shaft is changed, and thereby the living body of the electrode peripheral portion is changed. The width of the reciprocating motion in the direction of coming and going with respect to changes.

According to the fifth aspect of the present invention, when the abutting means is driven to rotate, the tip of the abutting means abutting on the electrode plate inclined with respect to the vertical direction of the support leg is brought into contact with the electrode plate. Sliding in the circumferential direction. Since the electrode plate is restricted from rotating with respect to the supporting leg, the contact plate performs a substantially wiping motion by sliding the electrode plate in the circumferential direction. In other words, each point on the peripheral edge of the electrode plate reciprocates in the direction of approaching and separating from the living body while sequentially moving in the circumferential direction at the position closest to the living body without changing the relative position with respect to the living body.

[0017]

FIG. 1 is a diagram showing a circuit configuration of an ultra-high frequency heating treatment apparatus according to the present invention. In the figure, 1 is a power supply circuit for supplying power, 2 is a self-excited oscillation type high-frequency oscillation circuit for generating high-frequency energy, 3 is a tuning circuit for tuning with a load, and 41 and 42 are at least peripheral parts of a living body. A disk-shaped electrode plate capable of oscillating or substantially oscillating so as to reciprocate in a direction of coming and going with respect to 7;
Reference numerals 1 and 52 denote drive mechanisms for driving the electrode plates 41 and 42, respectively. Reference numerals 61 and 62 denote cooling pads attached so as to cover the entire electrode surfaces of the electrode plates 41 and 42. Reference numeral 7 denotes heating treatment. The living body to be treated, 71 is the living body 7
The affected area inside. Reference numeral 8 denotes a temperature sensor for detecting the temperature of the affected part 71, and reference numeral 9 denotes a control circuit for controlling the driving of the power supply circuit 1 and the driving mechanisms 51 and 52.

The temperature information detected by the temperature sensor 8 is input to the control circuit 9, and the control circuit 9 controls on / off driving of the power supply circuit 1 based on the temperature information.
The temperature of the affected part 71 during the heating treatment is maintained at around 45 ° C.
Further, the control circuit 9 controls the driving of the drive mechanism units 51 and 52, and causes the electrode plates 41 and 42 to make a sneaking movement or a substantially sleaking movement.

FIG. 2 shows the electrode plate 41 and the drive mechanism 5.
FIG. 2 is a cross-sectional view showing the structure of FIG. The electrode plate 41 supports the support leg 1.
0 is attached to the holder 10a at the tip of
Numeral 0 is attached to the tip of the cylindrical base 20.
A large-diameter support member 11 is concentrically fixed substantially at the center of the support leg 10, and the support leg 10 is swung by fitting the support member 11 into a spherical bearing 21 provided at the center of the distal end of the base 20. It is movably mounted.

A hole 10b is formed in a side surface of the holder 10a.
The connecting rod 12 is swingably attached to the side plate 20a of the base 20 via a spherical bearing 13 so that the electrode plate 41 does not rotate during the squirting movement.
Is loosely fitted.

A clamp 22 having a circular cross section for holding an engaging member 23 with which the rear end of the support leg 10 engages is provided inside the front end surface of the base 20. The above clamp 2
2 is a clamp housing 221 and a clamp clutch 2
The clamp housing 221 is rotatably mounted on the inside of the distal end of the base 20 via an angular ball bearing 24 in a horizontal plane.

A drive shaft 25 is fixed to the center of the upper surface of the clamp clutch 222, and a drive gear 26 is mounted at an intermediate position of the drive shaft 25. Further, the drive gear 26 is meshed with a gear 27 fixed to the tip of a rotary shaft 281 of a hydraulic motor 28, and the rotational force of the hydraulic motor 28 is transmitted to the clamp clutch 2 via the gear 27 and the drive gear 26.
22 and the clamp 22 is driven to rotate. The hydraulic motor 28 is connected to a drive source (not shown), and the drive is controlled by the control circuit 9.

The engaging member 23 is a donut-shaped disk having an engaging hole 23a having a diameter slightly larger than the diameter of the support leg 10, and a tapered taper 231 is formed on the inner peripheral surface. Is formed with a friction portion 232. The coupling member 23 has a smaller diameter than the inner diameter of the clamp clutch 222, so that the mounting position in the clamp 22 can be changed in the horizontal direction.

The engaging member 23 is mounted in the clamp 22 such that the engaging hole 23a is shifted from the central axis M of the clamp 22 by a predetermined dimension. For example, 10
It is supported by the base 20 in a state of being inclined at a minute angle θ of about ± °.

When the support leg 10 is not inclined, the center axis of the support leg 10 coincides with the center axis M of the clamp 22. Further, by changing the mounting position of the engaging member 23 in the clamp 22, the distance of the engaging hole 23a from the central axis M is changed, and the inclination angle θ is adjusted. The change of the attachment position of the engagement member 23 will be described later.

A hydraulic cylinder 29 is mounted at the rear end of the base 20 and above the clamp 22. The rod 29 of this hydraulic cylinder 29
A distal end fitting 31 is fixed to the distal end of the drive shaft 25 with a screw 32 via a spring washer 30. The distal end of the drive shaft 25 of the clamp clutch 222 is rotatably connected to the distal end fitting 31 via a thrust ball bearing 33. ing. A guide 292 for guiding the reciprocating movement of the rod 291 of the hydraulic cylinder 29 has a step 292 a, and a flat spring 34 is provided between the step 292 a and the spring washer 30.

Under normal conditions, the hydraulic cylinder 2
9 is in an off state, the clamp clutch 222 is urged toward the clamp housing 221 by the spring force of the flat spring 34, and the engaging member 23 is disengaged from the clamp clutch 22.
2 and the housing 221. Since the friction portions 232 are formed on the front and back surfaces of the engagement member 23, the engagement member 23 is immovably held in the clamp 22.

On the other hand, when the hydraulic cylinder 29 is turned on, the rod 291 moves upward and the clamp housing 221 of the clamp clutch 222 is driven by the spring 34.
Is released, and in this state, the mounting position of the engaging member 23, that is, the inclination angle θ of the support member 10 can be adjusted.

In the above configuration, when the hydraulic motor 28 is driven, the torque is transmitted to the drive shaft 25 via the gear 27 and the drive gear 26, and the clamp 22 rotates. The rotation of the clamp 22 causes the rear end of the support leg 10 engaged with the engagement hole 23a of the engagement member 23 to make a circular motion around the central axis M, and the holder 10a of the support leg 10 corresponding to this circular motion. The electrode plate 41 attached to the center axis M
Make a circular motion around. As a result, the peripheral edge of the electrode plate 41 reciprocates in a direction approaching and separating from the living body 7 while sequentially moving in a circumferential direction at a position close to the living body 7.

In this embodiment, since the electrode plate 41 is rotated about the central axis M in a state where the electrode plate 41 is inclined, the electrode plate 41 is brought into and away from the living body 7 (hereinafter referred to as a vertical direction). Direction) and a direction perpendicular to the contact / separation direction (hereinafter, referred to as a lateral direction), and does not strictly move the electrode plate 41 in a slidable manner, but the inclination angle θ is a small angle. Therefore, the amount of movement of the central portion of the electrode plate 41 in the lateral direction is very small, and it can be considered that the electrode plate 41 is substantially slid.

FIG. 3 shows the electrode plate 41 and the drive mechanism 5.
FIG. 4 is a sectional view of a main part showing a structure of a second embodiment of FIG. In the second embodiment, a drive mechanism similar to the drive mechanism of FIG. 2 is used to move the electrode plate 41 in a shaking motion. Since only the structure for attaching the electrode plate 41 to the base 20 is different from the mechanism shown in FIG. 2, the structure for attaching the electrode plate 41 will be described here.

In FIG. 3, members having the same numbers as those shown in FIG. 2 perform the same functions. Also, the electrode plate 4
A holder 35 is provided at the center of the lower surface of the device 1. A support shaft 37 is attached to the center of the holder portion 35 via a spherical bearing 36 so as to be swingable, and a cylindrical shaft 38 is provided outside and coaxially with the support shaft 37. The tip of the support shaft 37 is connected to the clamp clutch 222.
Of the cylindrical shaft 38 is engaged with the engaging hole 23a of the engaging member 23, and the electrode plate 41 is inclined at a predetermined angle with respect to the central axis M. Angle θ
And is supported by the base 20 in an inclined state.

The upper surface of the electrode plate 41 is connected by a telescopic arm 39 which is hung from an appropriate position on the tip end surface of the base 20, so that the electrode plate 41 is prevented from rotating during a shaking motion. ing.

In the above configuration, when the hydraulic motor 28 is driven, the torque is transmitted to the drive shaft 25 via the gear 27 and the drive gear 26, and the clamp 22 rotates. Due to the rotation of the clamp 22, the tip of the cylindrical shaft 38 engaged with the engaging hole 23a of the engaging member 23 makes a circular motion around the central axis M, and the electrode plate 41 performs a wiping motion corresponding to the circular motion. . That is, the electrode plate 41 swings while rotating the direction of its inclined surface with the base end of the support shaft 37 (the support point by the spherical bearing 36) as a fulcrum. Thus, the peripheral portion of the electrode plate 41 is sequentially moved while changing the position of the living body 7.
Reciprocate in the direction of coming and going.

FIG. 4 shows the electrode plate 41 and the drive mechanism 5.
1A and 1B are diagrams showing a structure of a third embodiment, in which FIG. 1A is a sectional view of a main part, and FIG.

The third embodiment is another embodiment in which the electrode plate 41 is moved in a shaking motion. In FIG. 4A, the base 2
A support shaft 37 'extending downward on the center axis M of the leading end surface of 0'
Is provided, and an electrode plate 41 is swingably attached to the tip of the support shaft 37 'via a spherical bearing 36'. Further, a contact member 43 is provided between the base 20 ′ and the electrode plate 41. The spherical bearing 36 'is connected at an appropriate position by a telescopic arm 39' suspended from a base 371 'of the support shaft 37' so that the electrode plate 41 is prevented from rotating during a sleaking motion. It has become.

The contact member 43 includes a disk-shaped base 431 rotatably mounted on the base 371 'of the support shaft 37' via an angular ball bearing 44, and the center shaft M.
A contact ring 4 having a smaller diameter than the electrode plate 41, which is in contact with the upper surface of the electrode plate 41 while being inclined at a predetermined angle θ with respect to
32, and four support portions 433a to 433d (see FIG. 4B) for supporting the contact ring 432 in a state of being inclined at the predetermined angle θ.

A gear portion 431a is provided on a side surface of the base portion 431.
The gear portion 431a is meshed with the gear 27 fixed to the tip of the rotating shaft 281 of the hydraulic motor 28, and the rotational force of the hydraulic motor 28 is applied to the gear 27 and the gear portion 431a.
Is transmitted to the base 431 via the.

The support portions 433a to 433d are
The contact ring 432 is attached at a position where the contact ring 432 is divided into four equal parts, and the length of each of the support portions 433a to 433d is set such that the contact ring 432 is inclined at a predetermined angle θ with respect to the central axis M. 41 is set so as to be in contact with the upper surface.

A bearing 45 is rotatably embedded in the lower surface of the contact ring 432.
Is slidably in contact with the upper surface of the electrode plate 41 via the bearing 45.

In the above configuration, when the hydraulic motor 28 is driven, the rotational force is applied to the gear 27 and the gear portion 431a.
Is transmitted to the base portion 431 of the contact member 43 via the contact member 43, and the contact ring 432 of the contact member 43 is rotated around the central axis M at an inclination angle θ. Slides on the upper surface of the electrode plate 41 while changing the inclination direction of the ring surface, that is, the inclination direction of the contact surface to the electrode plate 41. As a result, the peripheral portion of the electrode plate 4 reciprocates in a direction approaching and separating from the living body 7 while sequentially moving the position close to the living body 7 in the circumferential direction, and performs a wiping motion.

In the third embodiment, the contacting portion with the electrode plate 41 is constituted by the contact ring 432,
1 but linearly abut against the support 4
The tips of 33a to 433d may be brought into contact with the electrode plate 41 via the bearing 45. In this case, it is preferable that the four support portions 433a to 433d be in contact with each other, but at least the tip of the longest support portion 433a is in contact with the support portion 433a and the support portion 433a is circularly moved around the central axis M. Accordingly, the electrode plate 41 can be slid and moved.

Next, the operation of the ultra-high frequency heating treatment apparatus according to the present invention will be described. The two electrode plates 41 and 42 are attached to the surface of the living body 7 via the pads 61 and 62 so that the diseased part 71 is sandwiched between the electrode plates 41 and 42 from the outside of the living body 7 (see FIG. 1). Next, when the power is turned on, power is supplied from the power supply circuit 1 to the high-frequency oscillation circuit 2, and the high-frequency voltage generated by the high-frequency oscillation circuit is applied to the electrode plates 41 and 42. A high-frequency electric field is generated between the electrode plates 41 and 42 to which the high-frequency voltage is applied, and the affected part 71 is dielectrically heated to a predetermined temperature due to the dielectric loss of the high-frequency energy, and is necrotized and destroyed.

When a high-frequency voltage is applied to the electrode plates 41 and 42, the electrode plates 41 and 42 generate heat due to resistance loss. At this time, if the electrode plates 41 and 42 are stationary, the electric flux density on the surface of the electrode plates 41 and 42 becomes higher at the peripheral edge of the electrode plates than at the center of the electrode plates due to the edge effect. Also, the density of the current flowing through the electrode plate 42 is higher at the periphery of the electrode plate than at the center of the electrode plate.
The exothermic temperature of 42 becomes higher toward the periphery.

However, the electrode plates 41 and 42 perform the oscillating motion or the substantially oscillating motion by the above-mentioned mechanism, and the periphery thereof moves the position close to the living body 7 sequentially in the circumferential direction while moving the living body 7 in the circumferential direction. The pads 61 and 62 are deformed accordingly, and the thicknesses of the pads 61 and 62 on the peripheral edge of the electrode sequentially change. As a result, the electric field distribution on the surfaces of the electrode plates 41 and 42 is disturbed, the electric field concentration on the electrode plate peripheral edge due to the edge effect is instantaneously dispersed, and the rise of the heat generation temperature at the electrode plate peripheral edge is suppressed. Therefore, the temperature rise in the portion of the living body 7 where the electrode plates 41 and 42 are in contact is relatively uniform.

Although the impedance of the load fluctuates due to the shaking motion of the electrode plates 41 and 42, the self-oscillation type high-frequency oscillation circuit 2 is used in this embodiment, so that the oscillation frequency f Continuously changes to the frequency f 'tuned by the tuning circuit 3 in accordance with the variation of the load impedance, and the required power is supplied to the load without lowering the efficiency.

FIG. 5 is a diagram showing temperature characteristics of a portion of the living body where the electrode plates 41 and 42 are in contact.

In the figure, the horizontal axis represents the temperature measurement position of the living body, and the vertical axis represents the temperature difference. Is the electrode plate 41
Shows the temperature difference between when no razor motion is performed and when the razor motion is performed, and shows the temperature distribution at each temperature measurement position as a temperature difference with respect to the maximum temperature. The effect of cooling the electrode plate 41 by the pad 61 is substantially uniform on the electrode plate surface.

As shown in the figure, when the electrode plate 41 is moved in a shaking motion, a temperature difference hardly occurs at the central portion A of the electrode plate 41, but decreases by 4 to 6 ° C. at the peripheral portions BE. . This means that the peripheral portion of the electrode plate 41 is higher by about 5 ° C. than the center portion when the electrode plate 41 is not slid, so that the temperature rise of the portion of the living body 7 in contact with the electrode plate 41 is averaged. This is supported by the fact that the temperature difference between the temperature measurement positions A to E is within about 2 ° C. as shown in FIG.

In the above embodiment, the case where the self-excited oscillation type high-frequency oscillation circuit 2 is used has been described. However, the present invention uses the separately-excited oscillation type high-frequency oscillation circuit having a fixed oscillation frequency f. The case can also be applied.

[0051]

As described above, according to the present invention,
In an ultrashort-wave heating treatment device in which a diseased part inside a living body is placed in a high-frequency electric field and the diseased part is necrotic and destroyed by dielectric heating, at least one of a pair of electrode plates attached to the living body in order to generate the high-frequency electric field is rubbed. Alternatively, it is possible to perform a substantially oscillating movement, and the peripheral edge of the electrode plate reciprocates in a direction in which it comes into contact with or separate from the living body, and the position of the peripheral edge of the electrode plate close to the living body moves in the circumferential direction. The electric field concentration is disturbed, and a temperature rise in a portion of the living body near the peripheral edge of the electrode plate is suppressed. This equalizes the temperature rise of the part where the electrodes of the living body come into contact,
The occurrence of unpleasant itching and pain due to the temperature rise in this part is prevented.

[Brief description of the drawings]

FIG. 1 is a diagram showing a circuit configuration of an ultrahigh-frequency heating treatment apparatus according to the present invention.

FIG. 2 is a sectional view showing a structure of an electrode plate and a driving member.

FIG. 3 is a sectional view of a main part showing the structure of a second embodiment of an electrode plate and a driving member.

FIGS. 4A and 4B are diagrams showing a structure of an electrode plate and a driving member according to a third embodiment, wherein FIG. 4A is a sectional view of a main part, and FIG.

FIG. 5 is a diagram showing a temperature characteristic of a portion of the living body in contact with the electrode plate.

FIG. 6 is a diagram showing a schematic configuration of a conventional microwave heating treatment apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Power supply circuit 2 High frequency oscillation circuit 3 Tuning circuit 7 Living body 71 Diseased part 8 Temperature sensor 9 Control circuit 10 Support leg 10a Holder part 10b Hole 11 Support member 12 Connecting rod 20, 20 'Base 20a Side plate 21 Spherical bearing 22 Clamp 221 Clamp housing 222 Clamp clutch 23 Engagement member 23a Engagement hole 231 Taper 232 Friction part 24 Angular ball bearing 25 Drive shaft 26 Drive gear 27 Gear 28 Hydraulic motor 29 Hydraulic cylinder 291 Rod 30 Spring washer 31 Tip fitting 32 Screw 33 Thrust ball bearing 34 Sarah spring 35 Holder 36, 36 'Spherical bearing 37, 37' Support shaft 38 Shaft 39, 39 'Arm 41, 42 Electrode plate 43 Contact member 431 Base 431a Gear 432 Contact ring 433a to 433d Support 44 a Gyular ball bearing 45 Bearing 51, 52 Drive mechanism 61, 62 Pad

Claims (5)

(57) [Claims] 1. Both electrodes sandwiching a living bodyBoardEmit high frequency electric field between
LiveSuper shortIn the wave heating treatment device, the two electrodesBoard
Means that at least one of them has a sneaking motion mechanism
An ultra-high frequency heating treatment apparatus characterized by the above-mentioned. And a support leg having an intermediate position supported by a base via a spherical bearing so as to be swingable, and having the electrode plate attached to a tip thereof in a direction perpendicular to an axial direction. Regulating means for regulating the rotation of the electrode plate,
When the support legs are tilted with respect to the
It has an engagement hole with which the base end of the support leg engages, and this engagement hole
Circular movement around the center axis in the normal direction
2. The apparatus according to claim 1 , further comprising an engaging means provided, and a driving means for rotating and driving the engaging means . 3. The quasi-slipping motion mechanism is mounted on a surface of a base.
Vertically projecting, the center of the above electrode plate can swing at the tip
The rotation of the support plate attached to the
Control means, and the support legs substantially at the center of the electrode plate.
Eccentric with respect to the cylindrical shaft protruding from the shaft and the shaft of the support leg
At the position, an engagement hole with which the base end of the cylindrical shaft engages.
The base has the engagement hole of the base capable of circular movement around the axis of the support leg.
2. The ultra-high-frequency heating treatment apparatus according to claim 1, further comprising: an engaging means provided in the inside; and a driving means for rotating the engaging means . 4. The method according to claim 1, wherein the engaging means is provided with respect to a center of the circular motion.
The ultrashort-wave heating treatment apparatus according to claim 2 , wherein an eccentric position of the engagement hole is provided so as to be changeable. 5. The mechanism for substantially oscillating movement is provided on a surface of a base.
Vertically projecting, the center of the above electrode plate can swing at the tip
The rotation of the support plate attached to the
Regulating means for controlling the support legs,
The electrode plate is protruded so that it can move
Contact this electrode plate while tilting it with respect to the vertical
2. The apparatus according to claim 1, further comprising: a contacting means which is in contact with the driving means; and a driving means for rotating the contacting means .