JPH0532086Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a switch electrode, and particularly to a switch electrode that has a switch function and has improved adhesion and tactility to the skin of a living body.

[Prior Art] (1) Background of the invention In general, electrodes include induction electrodes for deriving electrical phenomena from inside a living body to the outside, and conversely stimulation electrodes for introducing electrical stimulation from outside into a living body. It is well known that there are electrodes.

For example, induction electrodes are used to derive an electric potential corresponding to the action potential of the heart in a living body from the body surface and input it into an electrocardiograph to take an electrocardiogram, while stimulation electrodes are used to derive an electric potential corresponding to the action potential of the heart in a living body and input it into an electrocardiograph to take an electrocardiogram. It is used to introduce pulsed current into the living body to relieve stiff shoulders.

Electrocardiographs and low-frequency therapy devices that use these electrodes have a power switch to operate the built-in circuit, and in the case of electrocardiographs,
An STD switch is provided, and until the STD switch is pressed, the electrocardiograph amplifier is grounded to prevent noise from being input.

In addition, looking at medical equipment as a whole, not just the electrocardiographs and low-frequency treatment devices mentioned above, there are also switches to change the energy once set midway through, and switches to generate electronic sounds in synchronization with the heart rate. Various switches are provided.

However, for those who operate medical devices,
Having a large number of switches means that the burden of operation increases, and the number of times you forget to turn them on or turn them off increases proportionately, which may make it impossible to operate medical equipment accurately.

Therefore, in medical devices that use electrodes, if the structure is such that the above-mentioned switch is automatically turned on as soon as the electrode is brought into close contact with the living body's skin surface, and automatically turned off as soon as it is removed from the living body's skin surface, The above-mentioned problems such as forgetting to turn on or turn off the switch can be minimized.

On the other hand, as mentioned above, electrodes are brought into close contact with the skin of a living body to derive a predetermined potential or introduce a pulse current with a predetermined energy, so it is better to improve the degree of adhesion in medical devices. It is clear that the intended purpose can be achieved.

Furthermore, since the electrode is a conductor for the above-mentioned potential and pulsed current, it is made of a conductive metal as a whole. Therefore, from the patient's side, where the electrode must be brought into close contact with the living body's skin surface, it will be easier to fit into the medical device if the cold sensation characteristic of metal is alleviated as much as possible and the tactility is improved.

(2) Conventional Example A typical example of a medical device that conventionally uses an inductive electrode is an electrocardiograph.

Turn on the power switch, place the electrode in close contact with the patient's biological skin, and then turn on the STD switch.
The patient's electrocardiogram is recorded on recording paper.

As mentioned above, this STD switch is a switch for opening the electrocardiograph amplifier.

That is, if the amplifier of the electrocardiograph is left open from the beginning, as soon as the power switch is turned on, the electrodes become an antenna and noise enters from the outside, causing malfunction.

In order to eliminate this situation, ground the input side of the amplifier in advance to prevent noise from entering, place the electrode in close contact with the skin surface of the living body, turn on the STD switch, open the amplifier, and perform the electrocardiogram. It's starting to record.

Further, a typical example of a medical device using a stimulation electrode is a low frequency treatment device.

When the power switch is turned on and the electrode is brought into close contact with the living body's skin surface, a low-frequency pulse current flows into the living body from a pulse oscillator built into the low-frequency treatment device. The pulsed current that flows into the living body is designed to relieve muscle stiffness and pain due to its relaxing effect. After treatment, turn off the power switch again.

[The problem that the idea attempts to solve]

(1) Electrocardiographs that use the above-mentioned inductive electrodes usually:
Handled by a doctor.

However, for doctors who have to diagnose many heart disease patients a day, having to operate the STD switch in addition to the power switch each time is complicated and cumbersome, and they often forget to turn on the STD switch. Sometimes I forget to turn it off.

Furthermore, low-frequency therapy devices using the above stimulation electrodes are used not only by doctors but also by patients and the general public, and among the general public, a very wide range of people from the young to the elderly use them.

However, unlike doctors, patients and the general public are not experts when it comes to medical equipment.

Therefore, patients and the general public, in particular, sometimes forget to turn on the power switch even after the stimulation electrode is brought into close contact with the living body's skin surface, or conversely, forget to turn off the power switch even after treatment.

Many low-frequency treatment devices operate only on dry batteries, so if you forget to turn off the power switch,
This contributes to shortening the life of the power supply.

Generally, medical equipment including electrocardiographs and low-frequency treatment devices are equipped with various switches, and the problem is that the more switches there are, the more burdensome it becomes to operate them.

(2) Furthermore, in the case of an induction electrode, it is the electrode plate that directly contributes to, for example, deriving the potential on the surface of a living body's skin, and in the case of a resource electrode, it directly contributes to introducing, for example, a low-frequency pulse current. be.

Conventional electrode plates, regardless of whether they are induction electrodes or stimulation electrodes, have a flat surface in contact with the skin and have no elasticity as a whole.

However, it can be said that the skin surface itself does not have any flat spots; it has some kind of unevenness. Even when a conventional flat, non-elastic electrode plate is brought into contact with the uneven skin, a gap is formed between the electrode plates, making it difficult to make a close contact.

(3) Furthermore, conventional electrode plates are entirely made of conductive metal.

Therefore, in the case of medical devices in which the electrode plates are brought into direct contact with the skin of a living body, such as a heartna, which is a type of electrocardiogram recorder, and a handy type monitor that has triangular electrodes with electrodes arranged at each vertex of a triangle, Gives the patient a cooling sensation unique to metal.

For this reason, there is a problem that the patient feels extremely uncomfortable.

An object of the present invention is to provide a switch electrode that has a switch function and has improved adhesion and tactility to the skin of a living body.

[Means to solve the problem]

The above problem is solved by the input terminal as shown in Figure 1.
It has a lid plate 1 provided with an IN, a bottom plate 7 in which an opening 2 is formed, and a side plate 8 connecting the lid plate 1 and the bottom plate 7, and has a hemisphere projecting outward from the opening 2. An insulating electrode plate guiding cylinder 4 for guiding the shaped electrode plate 5 along the side plate 8 is formed, and an insulating member 50 and an inner surface 55 to an outer surface 5 of the insulating member 50 are formed.
The electrode plate 5 is formed of the metal member 51 coated over the entire length of the metal member 51, and the electrode plate 5 is connected to the input terminal IN.
The conductive elastic member 6 compressed between and connected to the metal member 51 causes the electrode plate 5 to contact the grounding metal fitting 3 provided on the bottom plate 7, and when pressed from the outside, the electrode plate 5 contacts the grounding metal fitting 3. As shown in FIG.
Switch terminal SW1 and second switch terminal SW2
a lid body 100 provided with an opening 200, a bottom plate 700 with an opening 200 formed therein, and the lid plate 100 and the bottom plate 700.
and a side plate 800 connecting the opening 20.
An insulating electrode plate guiding cylinder 400 is formed that guides the hemispherical electrode plate 500 protruding outward from the side plate 800 along the side plate 800, and an insulating member 51 is formed.
0 and the inner surface 550 to the outer surface 56 of the insulating member 510
The electrode plate 500 is formed by a first metal member 511 that is coated over 0 and a second metal member 512 that covers the inner surface 550 and is insulated from the first metal member 511. An electrically conductive elastic member 600 compressed between the first switch terminal SW1 and the second metal member 512 and connected thereto causes the electrode plate 500 to come into contact with the bottom plate 700, and when pressed from the outside, the electrode plate 500 is released from the bottom plate 700. Separately, the first metal member 511 connects to the input/output terminal IOT,
The second metal member 512 is the second switch terminal SW
The present invention is solved by the switch electrodes, which are characterized in that they can come into contact with each other.

[Effect]

As described above, according to the present invention, as shown in FIG.
and an insulating electrode plate guide cylinder 4 that guides the hemispherical electrode plate 5 protruding outward from the opening 2 along the side plate 8. , an insulating member 50 and a metal member 5 coated from the inner surface 55 to the outer surface 56 of the insulating member 50.
1 to form the electrode plate 5, and the electrode plate 5 is formed by:
A conductive elastic member 6 compressed between the input terminal IN and the metal member 51 and connected to the metal member 51 causes the electrode plate 5 to come into contact with the grounding fitting 3 provided on the bottom plate 7, and when pressed from the outside. A switch electrode is characterized in that it can contact the cover plate 1 apart from the grounding metal fitting 3, and as shown in FIG. 4, an input/output terminal IOT, a first switch terminal SW1, and a second switch terminal SW2. a bottom plate 700 in which an opening 200 is formed;
0 and a bottom plate 700, and an insulating electrode plate guiding cylinder 400 that guides the hemispherical electrode plate 500 protruding outward from the opening 200 along the side plate 800. and an insulating member 510 and an inner surface 5 of the insulating member 510.
a first metal member 511 that covers the outer surface 560 from 50 and a second metal member 512 that covers the inner surface 550 and is insulated from the first metal member 511;
The electrode plate 500 is formed by
0 is brought into contact with the bottom plate 700 by a conductive elastic member 600 compressed between the first switch terminal SW1 and the second metal member 512 and connected to both, and when pressed from the outside, the electrode plate 500 is separated from the bottom plate 700, the first metal member 511 becomes the input/output terminal IOT, and the second metal member 512 becomes the second
A switch electrode is provided, which is characterized in that it can come into contact with the switch terminal SW2.

(1) Therefore, according to the invention of claim 1 (FIG. 1), when the electrode plate 5 that is in contact with the grounding fitting 3 due to the action of the resilient member 6 is pressed from the outside,
For example, when pressed against the skin surface of a living body, the elastic member 6
It rises inside the electrode plate guiding cylinder 4 against the action of , moves away from the grounding fitting 3, and comes into contact with the cover plate 1.

As a result, the electrocardiogram amplifier ECA (Fig. 3)
It becomes open and an electrocardiogram can be taken via the input terminal IN.

Moreover, when the electrode plate 5 is peeled off from the biological skin surface,
Due to the action of the resilient member 6, it comes into contact with the grounding metal fitting 3 again.

As a result, the electrocardiogram amplifier ECA is grounded.

Therefore, when the electrode plate 5 is pressed against the living body's skin surface, the STD switch is automatically turned on, and when it is removed from the living body's skin surface, the STD switch is automatically turned off, making the conventional STD switch unnecessary and extremely easy to operate. It got easier.

Furthermore, according to the invention of claim 9 (FIG. 6),
When the electrode plate 500 that is in contact with the bottom plate 700 due to the action of the elastic member 600 is pressed from the outside, for example, when pressed against the skin surface of a living body, the electrode plate guide cylinder 500 will move against the action of the elastic member 600. 4
00, the first metal member 511 forming the electrode plate 500 apart from the bottom plate 700 contacts the input/output terminal IOT, and the second metal member 512 contacts the second switch terminal SW2.

Conversely, when the electrode plate 500 is peeled off from the biological skin surface, the elastic member 600 causes the bottom plate 70 to peel off again.
Touches 0.

Therefore, when the electrode plate 500 is pressed against the skin surface of the living body, the first switch terminal SW1 and the elastic member 6
and a second switch terminal SW2, such as a power switch (FIG. 6), is automatically turned on, and when it is removed from the biological skin surface, the power switch is automatically turned off.

As described above, according to the present invention, the burden of switch operation is significantly reduced compared to the conventional method.

(2) Next, in both claims 1 and 9, when the hemispherical contact surface of the electrode plate 5,500 is pressed against the biological skin surface, it resists the action of the elastic member 6,600, It gradually sinks into the electrode plate guiding cylinder 4,400 through the opening 2,200.

Therefore, regardless of the unevenness of the biological skin surface,
The form of contact has changed from the conventional point contact to surface contact, making it much easier to make close contact.

(3) Furthermore, in both the inventions of claims 1 and 9, the electrode plate 5,500 is not entirely made of metal; The electrode plate 500 according to the invention of claim 9 has an insulating member 510 and an insulating member 5 covered with the metal member 51 covering the outer surface 56.
The first metal member 511 covers the inner surface 550 to the outer surface 560 of the 10, and the second metal member 512 covers the inner surface 550.

Therefore, according to the present invention, the cold sensation peculiar to conventional metals is significantly alleviated, and the sensation when the electrode plate is brought into close contact with the skin surface of a living body is extremely improved.

〔Example〕

Hereinafter, the present invention will be explained by way of examples and with reference to the accompanying drawings.

(1) Description of the present invention of claim 1.

FIG. 1 is a diagram showing an embodiment of the present invention according to claim 1.

The electrode plate guide cylinder 4 is a generally flat cylinder that serves as a guide for the electrode plate 5, and is made of an insulating material such as plastic. and a side plate 8.

The cover plate 1 has a disk shape, and a through hole 11 is formed in the center thereof, and an input terminal IN is provided through the through hole 11 by printed wiring technology, so that it has a double-sided layered structure.

For example, the input terminal IN can be connected via the wire 14 to
Connected to the electrocardiograph amplifier.

The end face of this cover plate 1 has tightening notches 12, 1.
3 are formed facing each other, and a male screw 15 is formed on the entire end surface (FIG. 2A).

A female screw 85 is formed on the upper part of the inner wall surface of the side plate 8 in correspondence with the male screw 15 (FIG. 2C), so if you insert your fingers into the tightening notches 12 and 13 and tighten, , the lid plate 1 can be easily attached to the side plate 8, and conversely can be easily removed from the side plate 8. With this configuration, maintenance inspection or replacement of the input terminal IN provided on the cover plate 1, the electrode plate 5 provided inside the electrode plate guide cylinder 4, the resilient member 6, etc. can be easily performed. can.

The bottom plate 7 also has a disc shape like the lid plate 1, and an opening 2 corresponding to a hemispherical electrode plate 5, which will be described later, is formed in the center of the bottom plate, and around the periphery of the opening 2, A grounding fitting 3 is provided.

In this embodiment, the grounding metal fitting 3 is composed of a first grounding metal fitting 31 and a second grounding metal fitting 32, but it may also be formed of a continuous band-shaped metal so as to surround the periphery of the opening 2. good.

The side plate 8 has a flat cylindrical shape, and through holes 81 and 82 for ground wiring are formed in the lower part of the side plate 8.
For example, the ground wire 9 is connected to the first ground fitting 31 by solder 10 through the ground wiring through holes 81 and 82 (FIG. 2C).

Furthermore, guide protrusions 83 and 84 are formed on the inner wall surface 86 of the side plate 8, facing each other at positions at 90 degrees with respect to the straight line connecting the ground wiring through holes 81 and 82.

On the other hand, as mentioned above, the electrode plate 5 is hemispherical and has a bowl-like shape as a whole.
By the insulating member 50 and the metal member 51 covering from the inner surface 55 to the inner surface 55 of the insulating member 50,
For example, in this embodiment, the entire surface of the insulating member 50 is formed by metal plating.

The end face of the collar 57 of the electrode plate 5 has cutout portions 61 and 62 for ground wiring and the cutout portion 6 for ground wiring.
Guide notches 53 and 54 are formed at 90 degrees with respect to the straight line connecting the points 1 and 62.

Furthermore, the metal member 51 on the inner surface 55 side of this electrode plate 5
A conductive elastic member 6, such as a metal coil spring, attached to the support fittings 9 and 10 is compressed between the part and the input terminal IN described above, and the elastic force of the coil spring 6 causes , collar 57 of electrode plate 5
is in contact with the grounding metal fitting 3.

In this case, the guide notch 5 of the collar 57 of the electrode plate 5
3 and 54 are guide projections 8 on the inner wall surface 86 of the side plate 8
The electrode plate 5 is arranged so that the ground wiring notches 61 and 62 of the collar 57 face the ground wiring through holes 81 and 82 in the lower part of the side plate 8.

Therefore, the ground wire 9 is soldered 10 to the grounding fitting 3.
Even if the connection is made with
The electrode plate 5 is in close contact with the grounding fitting 3 without any gaps, and the vertical movement of the electrode plate 5 within the electrode plate guide cylinder 4 is prevented by the guiding notches 53 and 54 of the collar 57 being in close contact with the inner wall surface 86 of the side plate 8. It is designed to be carried out smoothly along the guiding protrusions 83 and 84.

FIG. 3 is a diagram showing an example of application of the present invention according to claim 1.

This application example is based on the switch electrode (first
This is an example in which the electrocardiograph (Fig. 2) is used as the induction electrode of an electrocardiograph.

In the same figure, the switch electrode according to the present invention is shown in the first
Three induction electrodes, a second induction electrode, and a third induction electrode are provided, and the input terminal IN of the first induction electrode is connected to the first buffer amplifier BA1, and the input terminal IN of the second induction electrode is connected to the second buffer amplifier BA2, respectively. At the same time, all the second grounding fittings 32 from the first induction electrode to the third induction electrode are grounded.

Hereinafter, the operation of the present invention will be explained based on FIG. 1 together with an application example of FIG. 3.

In the state shown in Fig. 3, each induction electrode,
is in the off state as a switch (Fig. 1 A, 3
(solid line in the figure)), the electrocardiogram amplifier ECA is in a grounded state, that is, the STD switch is not turned on. Therefore, even if the power switch is turned on, only the baseline will be displayed on the electrocardiograph monitor MON and the recording paper REP.

However, when each induction electrode is brought into close contact with the living body's skin surface, each electrode plate 5 separates from the second grounding metal fitting 32 against the force of the elastic member 6, and turns on as a switch (the second (Figure 1B, dashed line in Figure 3).

This means that the STD switch is turned on, and the electrocardiogram amplifier ECA becomes open.

Then, the electric potentials at two points on the biological skin surface ECG1,
The ECG 2 passes through the first induction electrode, the electrode plate 5 of the second induction electrode, the resilient member 6, and the input terminal IN to the first buffer amplifier BA1 and the second buffer amplifier.
It is input to BA2, and the difference between the two potentials ECG1 and ECG2 is amplified by the electrocardiogram amplifier ECA, and the electrocardiogram waveform V is displayed on the monitor MON and recorded on the recording paper REP.

As each induction electrode is pressed against the skin surface of the living body, the flange 57 of the electrode plate 5 that was in contact with the grounding metal fitting 3 comes into contact with the back surface 16 of the cover plate 1, but as soon as it separates from the grounding metal fitting 3, the flange 57 of the electrode plate 5 comes into contact with the The electric amplifier ECA will be open, so you can connect it from that point on and take an electrocardiogram.

After taking the electrocardiogram, each dielectric electrode,
, when removed from the living body's skin surface, the electrode plate 5 returns to its original position due to the difference in the elastic member 6, and its collar 57 contacts the second grounding metal fitting 32 again, and the switch is turned off. (Figure 1 A, 3
solid line in the figure).

This means that the STD switch is turned off, and the electrocardiogram amplifier ECA becomes grounded.
No noise is input.

Finally, turn off the power switch to end all operations.

As explained above, when the electrode plate 5 is pressed against the living body's skin surface, the STD switch is automatically turned on, and when it is removed from the living body's skin surface, the STD switch is automatically turned off, so the conventional STD switch is no longer necessary. Operation has become extremely easy.

In addition, when the hemispherical contact surface of the electrode plate 5 is pressed against the skin surface, it sinks into the electrode plate guiding cylinder 4 against the action of the elastic member 6, so that the unevenness of the skin surface Regardless of the situation, the form of contact has changed from the conventional point contact to surface contact, which allows for close contact without any gaps.

Furthermore, since the electrode plate 5 is no longer entirely made of metal, the cold sensation characteristic of conventional metals is significantly alleviated, and the tactile sensation when the electrode plate 5 is brought into close contact with the skin of a living body is greatly improved.

(2) Description of the present invention of claim 9.

FIG. 4 is a diagram showing an embodiment of the present invention according to claim 9.

Since the embodiment of the present invention shown in FIG. 1 has the same overall shape and structure regarding the electrode plate guiding cylinder 400, only the differences will be described below.

The lid plate 100 has through holes 110, 140, and 160 formed in its center and on both sides, and the first switch terminal SW1, input/output terminal IOT, and second switch terminal are connected through each through hole.
SW2 is provided by printed wiring technology and has a double-sided layered structure.

For example, the input/output terminal IOT is connected to a low frequency oscillator via a wire 151 (FIG. 5A), the first switch terminal SW1 is connected to a power source via a wire 152, and the second switch terminal SW2 is connected to a wire 153. to a circuit that is powered by that source through
each connected.

Unlike claim 1, the opening 200 of the bottom plate 700
No grounding fitting is provided on the periphery, and accordingly, there is a through hole for the ground wiring in the lower part of the side plate 800, and also a notch for the ground wiring in the end face of the collar 570 of the electrode plate 500. However, they are not formed.

The electrode plate 500 includes an insulating member 510, a first metal member 511 covering the insulating member 510 from an inner surface 550 to an outer surface 560, and a second metal member 511 covering the inner surface 550 and insulated from the first metal member 511.
It is formed of a metal member 512.

Therefore, when viewed from the inner surface 550 side (FIG. 5B),
Unlike claim 1 (FIG. 2B), the first metal member 5
11 and the second metal member 512.
0 surface is exposed, and the first metal member 511 and the second metal member 512 are not electrically connected even at the end surface of the collar 570.

These first metal member 511 and second metal member 51
2 is actually formed by metal plating on a part of the insulating member 510, but the reason why the entire insulating member 510 is not made of metal plating as in the invention of claim 1 is because the first metal member 511 is not electrically stimulated, e.g. This is because the two metal members have different roles, such as being used for inputting and outputting pulse current, and the second metal member 512 being used as a switch, for example, a power switch.

FIG. 6 is a diagram showing an example of application of the present invention according to claim 9.

This application example is based on the switch electrode (fourth electrode) according to the present invention.
5) is used as a stimulation electrode for a low-frequency treatment device.

In the figure, two switch electrodes according to the present invention are provided as a first stimulation electrode and a second stimulation electrode.

The input/output terminal IOT of the first stimulation electrode is connected to the low frequency oscillator LPO, the first switch terminal SW1 is connected to the power supply E,
The second switch terminal SW2 is connected to a circuit including the low frequency oscillator LPO, which is supplied with power from the power source E.
The input/output terminal IOT of the second stimulation electrode is a low frequency oscillator
Each is connected to LPO.

Hereinafter, the operation of the present invention will be explained based on FIG. 4 as well as an application example of FIG. 6.

In the state shown in Fig. 4, each stimulation electrode is
The switch is in the OFF state (solid line in FIG. 4A and FIG. 6), and the power switch consisting of the first switch terminal SW1, the elastic member 600, the second metal member 512, and the second switch terminal SW2 is turned on. Not yet. Therefore, no power is supplied to the low frequency oscillator LPO, and no pulse current LP is output.

However, when each stimulation electrode is brought into close contact with the biological skin surface, each electrode plate 500 separates from the bottom plate 700 against the force of the resilient member 600, and when further force is applied, the first metal member 511 is inserted. To the output terminal IOT,
The second metal member 512 is the second switch terminal SW2
(B in FIG. 4, broken lines in FIG. 6), respectively.

As a result, the above-mentioned first switch terminal SW1
Then, the power switch consisting of the resilient member 600, the second metal member 512, and the second switch terminal SW2 is turned on, and at the same time, the input/output switch consisting of the input/output terminal IOT and the first metal member 511 is also turned on.

Then, the low frequency oscillator LPO operates, and a pulse current LP is output, which is introduced into the living body through the input/output terminal IOT of the first stimulation electrode and the first metal member 511, as shown in the figure. the first of
It passes through the metal member 511 and the input/output terminal IOT and returns to the low frequency oscillator LPO.

After the treatment is finished, when each stimulation electrode is peeled off from the living body's skin surface, the electrode plate 500 returns to its initial position due to the action of the elastic member 600, and its collar 570 contacts the bottom plate 700 again, and the switch is turned off. As shown in FIG. 4A, the solid line in FIG. 6 is in the off state.

As a result, both the power switch and the input/output switch mentioned above are automatically turned off, and all operations are completed.

As explained above, when the electrode plate 500 is pressed against the biological skin surface, the power switch is automatically turned on.
The power switch is automatically turned off when removed from the biological skin surface, making the conventional power switch unnecessary and extremely easy to operate.

Furthermore, when the hemispherical contact surface of the electrode plate 500 is pressed against the biological skin surface, the resilient member 60
Since the electrode plate guide cylinder 400 sinks into the electrode plate guiding cylinder 400 against the action of Summer.

Furthermore, since the electrode plate 500 is no longer entirely made of metal, the cold sensation characteristic of conventional metals is significantly alleviated, and the tactile sensation when the electrode plate 500 is brought into close contact with the skin of a living body is greatly improved.

The present invention of claims 1 and 9 explained above is based on STD
It is applicable not only to switches and power switches but also to all switches, and it goes without saying that the principle can be applied not only to medical devices but also to device switches in all other industries.

[Effect of idea]

As described above, according to the present invention, as shown in FIG.
and an insulating electrode plate guide cylinder 4 that guides the hemispherical electrode plate 5 protruding outward from the opening 2 along the side plate 8. , an insulating member 50 and a metal member 5 coated from the inner surface 55 to the outer surface 56 of the insulating member 50.
1 to form the electrode plate 5, and the electrode plate 5 is formed by:
A conductive elastic member 6 compressed between the input terminal IN and the metal member 51 and connected to the metal member 51 causes the electrode plate 5 to come into contact with the grounding fitting 3 provided on the bottom plate 7, and when pressed from the outside. A switch electrode is characterized in that it can touch the cover plate 1 apart from the grounding metal fitting 3, and as shown in FIG. 4, an input/output terminal IOT, a first switch terminal SW1, and a second switch terminal SW2. a bottom plate 700 in which an opening 200 is formed;
0 and a bottom plate 700, and an insulating electrode plate guiding cylinder 400 that guides the hemispherical electrode plate 500 protruding outward from the opening 200 along the side plate 800. and an insulating member 510 and an inner surface 5 of the insulating member 510.
a first metal member 511 covering the outer surface 560 from 50 and a second metal member 512 covering the inner surface 550 and insulated from the first metal member 511;
The electrode plate 500 is formed by
0 is brought into contact with the bottom plate 700 by a conductive elastic member 600 compressed between the first switch terminal SW1 and the second metal member 512 and connected to both, and when pressed from the outside, the electrode plate 500 is separated from the bottom plate 700, the first metal member 511 becomes the input/output terminal IOT, and the second metal member 512 becomes the second
A technical measure has been taken in which switch electrodes are capable of coming into contact with the switch terminals SW2.

(1) Therefore, according to the invention of claim 1 (FIG. 1), when the electrode plate 5 that is in contact with the grounding fitting 3 due to the action of the resilient member 6 is pressed from the outside,
For example, when pressed against the skin surface of a living body, the elastic member 6
It rises inside the electrode plate guiding cylinder 4 against the action of , moves away from the grounding fitting 3, and comes into contact with the cover plate 1.

As a result, the electrocardiogram amplifier ECA (Fig. 3)
It becomes open and an electrocardiogram can be taken via the input terminal IN.

Moreover, when the electrode plate 5 is peeled off from the biological skin surface,
Due to the action of the resilient member 6, it comes into contact with the grounding metal fitting 3 again.

As a result, the electrocardiogram amplifier ECA is grounded.

Therefore, when the electrode plate 5 is pressed against the living body's skin surface, the STD switch is automatically turned on, and when it is removed from the living body's skin surface, the STD switch is automatically turned off, making the conventional STD switch unnecessary and extremely easy to operate. It got easier.

Furthermore, according to the invention of claim 9 (FIG. 6),
When the electrode plate 500 that is in contact with the bottom plate 700 due to the action of the elastic member 600 is pressed from the outside, for example, when pressed against the skin surface of a living body, the electrode plate guide cylinder 500 will move against the action of the elastic member 600. 4
00, the first metal member 511 forming the electrode plate 500 apart from the bottom plate 700 contacts the input/output terminal IOT, and the second metal member 512 contacts the second switch terminal SW2.

Conversely, when the electrode plate 500 is peeled off from the biological skin surface, the elastic member 600 causes the bottom plate 70 to peel off again.
Touches 0.

Therefore, when the electrode plate 500 is pressed against the skin surface of the living body, the first switch terminal SW1 and the elastic member 6
and a second switch terminal SW2, such as a power switch (FIG. 6), is automatically turned on, and when it is removed from the living body's skin, the power switch is automatically turned off.

As described above, the present invention has the technical effect of significantly reducing the burden of switch operation compared to the conventional method.

(2) Next, in both claims 1 and 9, when the hemispherical contact surface of the electrode plate 5,500 is pressed against the biological skin surface, it resists the action of the elastic member 6,600, It gradually sinks into the electrode plate guiding cylinder 4,400 through the opening 2,200.

Therefore, regardless of the unevenness of the biological skin surface,
The contact form has changed from the conventional point contact to a surface contact, which has the technical effect of making it much easier to make close contact.

(3) Furthermore, in both the inventions of claims 1 and 9, the electrode plate 5,500 is not entirely made of metal; The electrode plate 500 according to the invention of claim 9 has an insulating member 510 and an insulating member 5 covered with the metal member 51 covering the outer surface 56.
The first metal member 511 covers the inner surface 550 to the outer surface 560 of the 10, and the second metal member 512 covers the inner surface 550.

Therefore, according to the present invention, the cold sensation peculiar to conventional metals is significantly alleviated, and the technical effect is that the sensitivity when the electrode plate is brought into close contact with the biological skin surface is greatly improved. .

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an embodiment of the present invention according to claim 1;
FIG. 2 is a detailed view of an embodiment of the present invention as claimed in claim 1, FIG. 3 is a diagram showing an example of application of the present invention as claimed in claim 1, and FIG.
The drawings are diagrams showing an embodiment of the present invention as claimed in claim 9, FIG. 5 is a detailed diagram of an embodiment of the present invention as claimed in claim 9, and FIG. . In FIG. 1, 1...lid plate, 2...opening,
3...Grounding metal fitting, 4...Cylinder for electrode plate guide, 5...
... Electrode plate, 6 ... Resilient member, 7 ... Bottom plate, 8 ...
Side plate, 50... Insulating member, 51... Metal member, 5
5...Inner surface, 56...Outer surface, IN...Input terminal. In FIG. 4, 100...cover plate, 200...
Opening portion, 400... Cylindrical body for electrode plate guide, 500...
... Electrode plate, 600 ... Resilient member, 700 ... Bottom plate, 800 ... Side plate, 510 ... Insulating member, 51
1...First metal member, 512...Second metal member,
550...inner surface, 560...outer surface, IOT...input/output terminal, SW1...first switch terminal, SW2...
...Second switch terminal.

Claims (1)

[Claims for Utility Model Registration] (1) It has a cover plate 1 in which an input terminal IN is provided, a bottom plate 7 in which an opening 2 is formed, and a side plate 8 that connects the cover plate 1 and the bottom plate 7. An insulating electrode plate guiding cylinder 4 for guiding the hemispherical electrode plate 5 protruding outward from the opening 2 along the side plate 8 is formed, and an insulating member 50 and the insulating member 5 are formed.
The electrode plate 5 is formed of a metal member 51 coated from the inner surface 55 to the outer surface 56 of the input terminal IN, and the electrode plate 5 is compressed between the input terminal IN and the metal member 51 and connected to the conductive electrode plate 5. The resilient member 6 allows the electrode plate 5 to come into contact with the ground fitting 3 provided on the bottom plate 7, and when pressed from the outside, the electrode plate 5 can separate from the ground fitting 3 and come into contact with the cover plate 1. switch electrode. (2) The switch electrode according to claim 1, wherein the cover plate 1 and the bottom plate 7 are formed by disks, and the side plate 8 is formed by a flat cylinder. (3) The switch electrode according to claim 1, wherein the input terminal IN is formed by a double-sided layered structure with respect to the cover plate 1. (4) Tightening notches 12 and 13 on the end surface of the cover plate 1
The switch electrode according to claim 1, wherein a male screw 15 is formed, and the switch electrode is made detachable by being screwed into a female screw 85 formed on the upper inner wall surface of the side plate 8. (5) Connect the metal member 51 of the electrode plate 5 to the insulating member 5.
1. The switch electrode according to claim 1, which is formed by plating the entire surface with metal. (6) Notch 6 for ground wiring on the end face of the electrode plate 5
1 and 62, and the ground wiring notch 6
1 and 62, the switch electrode according to claim 1, which is opposed to the ground wiring through holes 81 and 82 formed in the lower part of the side plate 8, corresponding to Nos. 1 and 62. (7) Guide notches 53, 5 on the end surface of the electrode plate 5
4 and engaged with guide protrusions 83 and 84 formed on the inner wall surface 86 of the side plate 8 in correspondence with the guide notches 53 and 54, according to claim 1 of the utility model registration claim. electrode. (8) The switch electrode according to claim 1, wherein the grounding metal fitting 3 is formed from a first grounding metal fitting 31 and a second grounding metal fitting 32. (9) Cover plate 1 provided with input/output terminal IOT, first switch terminal SW1, and second switch terminal SW2
00 and a bottom plate 700 in which an opening 200 is formed.
and a side plate 800 connecting the lid plate 100 and the bottom plate 700, and a hemispherical electrode plate 500 protruding outward from the opening 200 is attached to the side plate 80.
An insulating member 510 and a first metal member 511 and an inner surface 5 covered from an inner surface 550 to an outer surface 560 of the insulating member 510 are formed.
50 and is insulated from the first metal member 511 to form the electrode plate 500, and the electrode plate 500 is connected to the first switch terminal.
Due to the conductive elastic member 600 compressed between SW1 and the second metal member 512 and connected to both,
When brought into contact with the bottom plate 700 and pressed from the outside, the electrode plate 500 separates from the bottom plate 700, the first metal member 511 becomes the input/output terminal IOT, and the second metal member 512 becomes the second switch terminal SW2. A switch electrode characterized in that it can be brought into contact. (10) The lid plate 100 and the bottom plate 700 are connected by a disk,
The switch electrode according to claim 9, wherein each of the side plates 800 is formed of a flat cylinder. (11) Above input/output terminal IOT and first switch terminal SW
The switch electrode according to claim 9, wherein the switch terminal SW 1 and the second switch terminal SW 2 are formed by a double-sided layered structure with respect to the cover plate 100. (12) Tightening notch 12 on the end face of the cover plate 100
9. The switch electrode according to claim 9, which is a registered utility model, wherein a male screw 150 is formed with a 0.0. (13) The switch electrode according to claim 9, wherein the first metal member 511 and the second metal member 512 of the electrode plate 500 are formed by partially metal plating the insulating member 510. (14) A guide notch 53 is provided on the end surface of the electrode plate 500.
0,540, and the guide notch 530,
540, the inner wall surface 86 of the side plate 800
A switch electrode according to claim 9 of the utility model registration, which is engaged with guide protrusions 830 and 840 formed at 0.