JP2807859B2 - Tympanic anesthesia and treatment device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tympanic anesthesia device and a therapy device which can safely use an iontophoresis type eardrum as a treatment device for otitis media with effusion.

[0002]

2. Description of the Related Art Generally, an ion osmotic tympanic anesthesia machine is
As shown in FIG. 3, an anesthetic solution 12 is brought into contact with the eardrum 11 and is injected up to the entrance of the ear canal 10, and the first ear-mounting electrode 13 on the plus side is inserted into the ear canal 10. The second electrode 14 for mounting the arm on the minus side is the arm 1
5 Wear inside the upper arm. In this state, when the power switch 23 is closed and the start switch 22 is turned on, the constant current circuit 20 is driven by a signal from the timer 21. Then, the current gradually reaches 500 μA in about 15 seconds in the direction of the solid arrow in FIG.
When the set time of 1 (for example, 11 minutes) ends, the current gradually decreases and becomes 0 after about 15 seconds, and the eardrum 11 is anesthetized.

[0003] In recent years, the therapeutic effect of iontophoresis on exudative otitis media has been recognized. For treatment of this otitis media with iontophoresis, a therapeutic solution is applied to the external auditory canal 10.
However, since this treatment liquid is generally negatively charged, the first liquid for the ear mounted on the ear canal 10 is used.
The electrode 13 is set to the minus side, and the second electrode 14 for mounting the arm is set to the plus side. Then, a treatment is performed by flowing a current of about 500 μA for a set time (for example, 15 minutes).

[0004]

As described above, in the tympanic anesthesia machine and the treatment device, the difference between the anesthetic solution 12 and the treatment solution, the first electrode 13 for attaching the ear, and the second electrode for attaching the arm. Even if there is a difference in the polarity of 14, the current value and time to flow are similar, so a device known as a tympanic anesthesia machine,
Polarity inverting circuit 1 such as a two-pole double-throw switch as shown in FIG.
The present inventors have found that it can be used as a therapeutic device for exudative otitis media only by adding 9 to it.

That is, a polarity inversion circuit 19 comprising a first changeover switch 25 and a second changeover switch 26 is provided in the tympanic anesthesia machine.
Is inserted into the eardrum, and the first switching piece 27 and the second switching piece 28 are switched to a solid line state to connect the first electrode 13 connected from the ear electrode terminal 16 via the lead 18. Is set to the plus side, the second electrode 14 connected to the arm electrode terminal 17 is set to the minus side, and when used as a therapeutic device, the first switching piece 27 and the second switching piece 28 are switched to a dotted line state. The second electrode 14 connected to the arm electrode terminal 17 is set to a plus side, and the first electrode 13 connected to the ear electrode terminal 16 is set to a minus side.

However, medical devices for the human body are:
In the unlikely event that there is no misoperation during use, if the direction of the current is reversed as described above, especially when there is a possibility that one device may be used by many people, the previous It is easy to cause an erroneous operation such as flowing a current in reverse in the state of use, and strict management and care in use are required. Improvements such as simply inserting a two-pole double-throw switch as the polarity reversing circuit 19 cannot be achieved. There is a problem that it is extremely dangerous.

According to the present invention, safety is usually set by setting one of the anesthesia machine and the treatment machine, and when used as the other device, the device is forcibly returned to one device after a certain period of time. The purpose is to obtain an even higher one.

[0008]

According to the present invention, a first electrode 13 attached to the ear canal 10, a second electrode 14 attached to other parts, and a predetermined current flowing between these electrodes. In a tympanic anesthesia machine comprising a constant current circuit 20 and a timer 21 for setting an energizing time, the first
A polarity reversing circuit 19 for switching the direction of current flow between the electrode 13 and the second electrode 14, a polarity reversing switch 42 for outputting a polarity reversing signal of the polarity reversing circuit 19, and the constant current according to the polarity reversing signal. Current value of circuit 20, timer 21
And the switching of the polarity inversion circuit 19 is instructed.
And a control circuit 43 for controlling the circuits to return to the original state of the anesthesia machine after a set time has elapsed.

[0009]

When operating as a therapeutic device, a signal from the polarity reversing switch 42 is sent to the control circuit 43, and the timer 21 and the constant current circuit 20 are switched to the therapeutic time Y and the therapeutic current value N by the output. At the same time, the polarity inversion signal output terminal 5
The polarity is inverted by the output from 1 to form a closed circuit for treatment. When the start switch 22 is turned on, a signal of the treatment time Y is sent from the timer 21 to the constant current circuit 20. A constant current flows from the constant current circuit 20, and the treatment ends when the set treatment time Y ends. A reset signal is output from the timer 21 after a lapse of a predetermined time from the end of the treatment, the timer 21 and the constant current circuit 20 return to the state for anesthesia, the polarity returns to the original state, and the operation start state as the original anesthesia machine is started. Return to and wait.

[0010]

An embodiment of the present invention will be described below with reference to the drawings. 1, a timer 21 and a control circuit 43 are connected in parallel to a battery 24 via a power switch 23, and a series circuit of a polarity inversion circuit 19 and a constant current circuit 20 is connected in parallel.

The polarity inversion circuit 19 includes a first switch 5
3, the second switch 54, the third switch 55, and the fourth switch 56, and the first switch 53 and the third switch 55
Are connected to each other, and the input sides of the second switch 54 and the fourth switch 56 are connected to each other. Further, the output side of the first switch 53 and the output side of the fourth switch 56 are connected to each other, and the output side of the second switch 54 and the output side of the third switch 55 are connected to each other. It is connected to the.

The control circuit 43 comprises a register circuit and the like, and includes a key signal input terminal 44, an inversion set signal input terminal 45, a reset signal input terminal 46, a power switching signal output terminal 47, a timer time setting signal output terminal 48, a start signal A switch output terminal 49, a constant current variable signal output terminal 50,
A polarity inversion signal output terminal 51 and a display signal output terminal 57 are provided.

The input circuit 41 is connected to the key signal input terminal 44, the polarity inversion switch 42 is connected between the inverted set signal input terminal 45 and the power supply line, and the reset signal input terminal 46 And a timer time setting signal output terminal 48 are connected to the timer 21, a power switching signal output terminal 47 is connected to open and close the power switch 23, and a start switch output terminal 49 controls opening and closing of the start switch 22. The constant current variable signal output terminal 50 is connected to the constant current circuit 20, and the polarity inversion signal output terminal 51 is connected to the third switch 5.
5 and the fourth switch 56 are opened and closed, and the first switch 53 and the second switch 54
Are connected to control opening and closing of the display signal output terminal 57.
Are connected to the display unit 58.

The input circuit 41 comprises a keyboard, a control button for the power switch 23, and a start switch 22.
Control button, a set button for the timer 21 and the constant current circuit 20, an increase button for the timer 21 and the constant current circuit 20, a decrease button for the timer 21 and the constant current circuit 20, an active current display button on the display unit 58, and a display. A set time display button on the display unit 58, a set current display button on the display unit 58, and the like are provided. In the example of FIG. 1, the start switch 22 is configured to open and close by an output signal from a start switch output terminal 49 of the control circuit 43. However, the present invention is not limited to this. By forming a part of the start switch 22, the start switch 22 in the input circuit 41 may be directly opened and closed without the intervention of the control circuit 43.

The operation of the above configuration will be described with reference to FIG. The setting time of the timer 21 and the constant current circuit 20
For the current value of, standard data is set in advance.
If the set time of each timer 21 and the current value of the constant current circuit 20 are to be newly set or need to be changed when operating as an anesthesia device or when operating as a treatment device, the input circuit 41 Set by the provided control button.

A. When operating as an anesthesia machine (1) As shown in (a) of FIG. 2, when the power switch control button of the input circuit 41 is pressed at t1, the power switch 23 is turned on via the control circuit 43.

(2) As long as the polarity inversion switch 42 is not pressed, the timer 21 and the constant current circuit 20 keep the anesthesia time and the anesthesia current, and output from the polarity inversion signal output terminal 51 of the control circuit 43. Does not appear, and the first switch 5 of the polarity inversion circuit 19
The third switch 54 and the second switch 54 are connected as shown by a solid line, and the third switch 55 and the fourth switch 56 are open as shown by a solid line. Therefore, the battery 24, the power switch 23, the first
The switch 53, the ear electrode terminal 16, the first electrode 13 for mounting the ear, the second electrode 14 for mounting the arm, the arm electrode terminal 17, the second switch 54, the constant current circuit 20, and the solid line arrow leading to the battery 24. A closed circuit as shown is formed.

(3) As shown in FIG. 2 (b), when the start switch control button of the input circuit 41 is pressed at t2, the start switch 22 is turned on via the control circuit 43, and the timer 21 outputs the signal from the timer 21 as shown in FIG. A signal of the anesthesia time X from t2 to t3 as in c) is sent to the constant current circuit 20.

(4) As shown in FIG. 2 (e), it takes T1 seconds to gradually reach MμA from the constant current circuit 20, then a constant current flows, and the time for anesthesia set by the timer 21 at t3. When X ends, the current in the constant current circuit 20 gradually decreases, and becomes zero after T2 seconds. Thus, the eardrum 11 is anesthetized.

(5) At t4 after a predetermined time has elapsed after the anesthetic current has become 0, a reset signal from the timer 21 is output to the reset signal input terminal 46 of the control circuit 43 as shown in FIG. Then, the power switch 23 is turned off via the control circuit 43 to return to the original state of the anesthesia machine.

B. When operating as a therapeutic device (1) As shown in FIG. 2A, when the power switch control button of the input circuit 41 is pressed at t5, the power switch 23 is turned on via the control circuit 43.

(2) As shown in FIG. 2 (f), at time t6, the polarity inversion switch 42 is pressed to output the polarity inversion signal to the control circuit 4.
3, the timer 21 and the constant current circuit 20 use the output signals from the timer time setting signal output terminal 48 and the constant current variable signal output terminal 50 to cause the treatment time Y and the treatment current value N to be output. Switch to. At the same time, the polarity inversion circuit 19
The third switch 55 and the fourth switch 56 are connected as indicated by a dotted line, and the first switch 53
And the second switch 54 opens as indicated by the dotted line. Therefore, the battery 24, the power switch 23, the third switch 55, the arm electrode terminal 17, the second electrode 14 for mounting the arm, the first electrode 13 for mounting the ear, the ear electrode terminal 16, the fourth switch 56, A closed circuit as shown by a dotted arrow extending to the constant current circuit 20 and the battery 24 is formed.

(3) As shown in FIG. 2 (b), when the start switch control button of the input circuit 41 is pressed at t7, the start switch 22 is turned on via the control circuit 43, and the timer 21 is turned on by the timer 21 in FIG. The signal of the treatment time Y from t7 to t8 as in c) is sent to the constant current circuit 20.

(4) As shown in FIG. 2 (e), the constant current circuit 20 gradually reaches NμA in T3 seconds, then a constant current flows, and the treatment time set by the timer 21 at t8. When Y is completed, the current in the constant current circuit 20 gradually decreases, becomes 0 after T4 seconds, and the treatment is completed.

(5) At t9 after a predetermined time elapses after the therapeutic current becomes 0, a reset signal from the timer 21 is output to the reset signal input terminal 46 of the control circuit 43 as shown in FIG. Then, since the timer 21 and the constant current circuit 20 return to the one for anesthesia and the output from the polarity inversion signal output terminal 51 is lost, the first switch 53 and the second switch 54
Is closed, the third switch 55 and the fourth switch 56 are opened,
Further, the power switch 23 is turned off to return to the original operation start state as the anesthesia machine and wait.

By operating the keys of the input circuit 41,
At the time of anesthesia and treatment, the preset data and the changed data of the timer 21 and the constant current circuit 20 are sequentially displayed on the display unit 5.
It is indicated by 8.

[0027]

【The invention's effect】

(1) Since the present invention is configured as described above, the anesthetic solution 12
The first electrode 1 for injecting a therapeutic solution instead of
If the polarity of 3 and the second electrode 14 for arm attachment are reversed, the tympanic anesthesia machine can be used as a treatment device for otitis media with effusion.

(2) The present invention is usually set in an anesthesia machine, and when used as a treatment device, forcibly returns to the anesthesia device after a certain period of time. Thus, even a device that may be used by a large number of people with one device does not cause an erroneous operation such as reverse current flow, and is extremely safe.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of a tympanic anesthesia machine and therapy device according to the present invention.

FIG. 2 is an operation waveform diagram of a case of an anesthesia machine and a case of a treatment device according to the present invention.

FIG. 3 is a block diagram when a conventional eardrum anesthesia machine is used as a treatment device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... ear canal, 11 ... eardrum, 12 ... anesthetic liquid, 13 ... 1st electrode for ear mounting, 14 ... 2nd electrode for arm mounting, 15 ... arm, 16 ... ear electrode terminal, 17 ... arm electrode terminal , 18 lead wire, 19 polarity reversal circuit, 2
0: constant current circuit, 21: timer, 22: start switch, 23: power switch, 24: battery, 25: first switch, 26: second switch, 27: first switch piece, 28: second switch 41, an input circuit, 42, a polarity inversion switch, 43, a control circuit, 44, a key signal input terminal, 45, an inversion set signal input terminal, 46, a reset signal input terminal, 47, a power switching signal output terminal, 48, Timer time setting signal output terminal, 49 start switch output terminal, 50 constant current variable signal output terminal, 51 polarity reversal signal output terminal, 52 inverter, 53 first switch, 54 second switch, 55th 3 switches, 56 ...
Fourth switch, 57: display signal output terminal, 58: display unit.

Claims (2)

(57) [Claims] A first electrode mounted on an ear canal
And a second electrode 14 attached to another site, a constant current circuit 20 for flowing a predetermined current between these electrodes, and a tympanic anesthesia machine including a timer 21 for setting an energization time. The first electrode 13 and the second electrode 1 at the time of a treatment device
4, a polarity inversion switch 42 for outputting a polarity inversion signal of the polarity inversion circuit 19, a current value of the constant current circuit 20 and a timer 21 in response to the polarity inversion signal. And a control circuit 43 for instructing the switching of the set time and the polarity inversion circuit 19 and for returning the circuits to the original state of the anesthesia machine after the set time has elapsed. Tympanic anesthesia and treatment device. 2. An input circuit 41 connected to a control circuit 43.
2. The eardrum anesthesia and treatment device according to claim 1, wherein the current value of the constant current circuit 20 and the time of the timer 21 can be set according to the purpose.