JP2001104329A - Electrical output device for medical use - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electrical output device for medical use capable of preventing unexpected malfunctioning by disabling the operation of an output circuit even if a power switch means is turned on while switch means are on. SOLUTION: When a power switch 13 is turned on while operating switches 16, 18a, 18b, 19a, 19b are on, a CPU 41 actuates and lights an alarm indicating part 14 and outputs an off signal to a transistor TR3. The transistor TR3 is turned off and a transistor TR2 is also turned off. Then, because power from a battery 31 is not supplied, the CPU 41 is stopped to stop the electric circuit of a high frequency generator 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medical electric output device such as an electric output device for supplying a high-frequency current to an electric scalpel or the like in a surgical operation.

[0002]

2. Description of the Related Art Conventionally, there is a handy type electric scalpel high frequency generator used for a surgical operation or the like.

[0003] The high frequency generator includes a power switch,
It includes a test switch, an output level changeover switch, an output switch, a battery, a battery storage room, an electric circuit, and an output terminal.

A power switch, a test switch,
Output level switch and output switch (hereinafter power switch, test switch, output level switch,
The output switches are collectively referred to as switches 51. ) Is turned on, and a high-frequency current is supplied to an electric knife electrically connected to an output terminal via an electric circuit.
Here, the structure of the conventional switch 51 will be described.

FIGS. 8A and 8B show a conventional switch 5.
1, an arc-shaped through hole 56 is formed in the upper side wall of the case body 55, and a slit 57 is cut out from both ends of the through hole 56 in a substantially radial direction of the center O of the arc. ing. A pressing portion 58 is cantilevered inside the through hole 56 via a bending portion 53. The pressing part 5
An indenter portion 52 is formed downward from the lower end surface of the base 8, and the portion of the indenter portion 52 on the upper surface of the substrate 59 provided in the case body 55 is provided with the actuator 5.
The switch unit 54 having the switch 4a is disposed. When the pressing portion 58 is pressed against the elasticity of the bending portion 53, the indenter portion 5
Numeral 2 presses the actuator 54a of the switch section 54. When the pressing on the pressing portion 58 is stopped, the pressing portion 58 returns to the original position due to the elasticity of the bending portion 58, and the indenter portion 52 is separated from the actuator 54a.

The case main body 55 has a battery storage chamber for storing a plurality of batteries. On both sides of the battery storage chamber, the plus connection terminal and the minus connection terminal are arranged by the number of batteries so as to face each other. The negative terminal is formed in a spring shape and has elasticity. Each battery is arranged such that the positive and negative electrodes of the battery correspond to the positive and negative connection terminals of the battery storage chamber, respectively, against the bias of each of the negative connection terminals.

[0007]

However, in the conventional high-frequency generator, when the switches 51 other than the power switch are turned on due to a failure inside the device or an object placed on the high-frequency generator, etc. When the power switch is turned on, a sudden output may occur.

Further, for example, when one of the four batteries is stored in the battery storage chamber in a state opposite to the normal storage state, a voltage lower than a predetermined voltage is supplied to the high frequency generator, thereby causing malfunction. Could happen.

A first object of the present invention is to provide a power supply switch which is turned on while the switch is on.
It is an object of the present invention to provide a medical electric output device that can disable the operation of an output circuit and prevent an unexpected malfunction.

A second object of the present invention is to provide a medical electric output device capable of stopping the operation of the output circuit when the power switch is kept on for a predetermined time or more, thereby preventing the malfunction from continuing. To provide.

A third object of the present invention is to provide a medical electric output device which suppresses an indenter portion from being pressed against a switch portion in a relative direction and an overload from being applied to the switch portion.

A fourth object of the present invention is to provide a medical electric output device in which a battery is not electrically connected to a power supply circuit even if a positive pole and a negative pole of a battery are arranged opposite to each other.

[0013]

In order to achieve the above object, the invention according to claim 1 is based on a power switch, an externally operable output switch, and an ON operation of the power switch. Control means for supplying power and inputting an input signal based on the ON operation of the output switch means, and outputting a predetermined control signal to an output circuit corresponding to the output switch means based on the input signal. In the medical output device provided, the control unit includes:
A first determination unit that determines whether the output switch unit is in an on state when the power switch unit is turned on, and a first determination unit that determines that the output switch unit is in an on state.
A first control unit that disables output of a predetermined control signal to the output circuit;
The gist is that it includes disabling means.

According to a second aspect of the present invention, in the medical electric output device according to the first aspect, the control means further determines whether or not the output circuit is abnormally operated.
The gist of the invention is that it includes a determination unit, and includes a second disabling unit that disables the operation of the output circuit when the second determination unit determines that the output circuit is abnormally operating.

According to a third aspect of the present invention, in the medical electric output device according to the first or second aspect, a warning means is connected to the control means, and the first disabling means or the second disabling means is provided. When the disabling means performs the disabling operation, the gist is that the control means causes the warning means to perform a warning operation.

According to a fourth aspect of the present invention, there is provided the medical electric output device according to any one of the first to third aspects, wherein the control means and the output circuit are operated based on an on operation of the power switch means. A power supply circuit capable of supplying electric power to the power supply circuit, wherein the first disabling means or the second disabling means actuates a cutoff means for cutting off the power supply to the control means of the power supply circuit. I do.

According to a fifth aspect of the present invention, in the medical electric output device according to any one of the first to fourth aspects, the power switch means or the output switch means can be operated externally. An indenter portion that is supported at both ends of the case body via a bending portion, and a switch that is disposed to face the indenter portion and that can be turned on and off by the indenter portion when the indenter portion is externally operated. The present invention is characterized in that the gist comprises a portion and an overload prevention portion for suppressing an overload on the switch portion by an external operation of the indenter portion.

According to a sixth aspect of the present invention, in the medical electric output device according to any one of the first to fifth aspects, the medical electric output device includes means having various functions. A case body for housing, the case body includes a battery housing space constituting a part of the power supply circuit, and the battery housing space includes a protruding positive electrode protruding from one end surface of the battery; A pair of plus and minus connection terminals respectively contacting the minus pole provided on the end face are provided, and the periphery of the plus connection terminal is brought into contact with the end of the battery to form a connection between the plus connection terminal and the minus pole. The gist of the present invention is to form a positive electrode selection shape portion that disables contact and allows contact with the positive electrode.

According to the first aspect of the present invention, when the power switch is turned on, the first determination means of the control means:
It is determined whether or not the output switch is on.
If it is determined by the first determining means that the output switch means is in the ON state, the first disabling means disables output of a predetermined control signal to the output circuit.

According to the invention of claim 2, in addition to the effect of the invention of claim 1, the second determination means of the control means determines whether or not the output circuit is operating abnormally. When it is determined that the output circuit is operating abnormally by the determination of the second determination means, the second
The disabling means disables the operation of the output circuit.

According to the third aspect of the present invention, in addition to the operation of the first or second aspect, a warning is issued when the first disabling means disables the output of the predetermined control signal to the output circuit. Activate the warning means. When the operation of the output circuit is disabled by the second determination means, the warning means is activated.

According to a fourth aspect of the present invention, in addition to any one of the first to third aspects, when the power switch is turned on, the output switch is turned on by the first determination means. When the determination is made, the first disabling means activates the cutoff means, and the cutoff means cuts off the power supply to the control means of the power supply circuit.

On the other hand, when the second determining means determines that the output circuit is abnormally operating, the second disabling means activates the interrupting means, and the interrupting means supplies power to the control means of the power supply circuit. Shut off supply.

According to a fifth aspect of the present invention, in addition to the function of any one of the first to fourth aspects of the present invention, in the power switch means or the output means switch, the indenter portion resists the elasticity of the bending portion. When the switch is externally operated, the switch is turned on and off by the indenter. The overload prevention unit suppresses an overload due to an external operation of the indenter unit when the switch unit is turned on and off.

According to a sixth aspect of the present invention, in addition to the operation of any one of the first to fifth aspects, when the battery is stored in the battery storage space, the positive and negative poles of the battery are connected. It is arranged to correspond to the positive connection terminal and the negative connection terminal of the battery storage space, respectively. Then, the positive electrode selection shape portion on the periphery of the positive connection terminal and the positive electrode side end of the battery are brought into contact with each other.
Since the positive electrode protrudes from the end face, the positive electrode and the positive connection terminal are in contact with each other.

On the other hand, the positive pole and the negative pole of the battery are arranged so as to correspond to the negative connection terminal and the positive connection terminal of the battery storage space, respectively. Then, the positive pole selection shape part on the periphery of the positive connection terminal is brought into contact with the negative pole side end of the battery. Therefore, a space is formed between the plus connection terminal and the minus pole, and the plus connection terminal and the minus pole are not contacted.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) An embodiment of a medical electric output device embodying the present invention will be described below with reference to the drawings.

As shown in FIG. 1, a high-frequency generator 11 as a medical electric output device has a rectangular box-shaped case body 1.
2, a power switch 13 as power switch means,
A warning display unit 14 as a warning unit and a load state display unit 1
5a to 15c and a test switch 16 as output switch means. Also, the high frequency generator 11
Output level display sections 17a to 17e, output level changeover switches 18a and 18b as output switch means, and output switches 19a and 19b as output switch means
And output terminals 20a and 20b and an electric circuit.

The power switch 13 and the warning display unit 14
Is provided on the upper part of the case body 12. Below the warning display section 14, the load state display section 1 is arranged in order from the top.
5a to 15c, test switch 16, output level display sections 17a to 17e, output level changeover switches 18a and 18
b, output switches 19a and 19b are provided. The output terminals 20 a,
20b are provided.

Next, the configuration of the power switch 13 will be described. The other switches 16, 18a, 18b, 19
Since the configurations of a and 19b are the same, the same reference numerals are given to the respective members, and description thereof will be omitted.

As shown in FIG. 2, a through hole 26 for the switch 13 is formed in the upper side wall of the case body 12 in a circular shape, and the periphery of the through hole 26 is chamfered.

As shown in FIG. 3, a pressing portion 22 is supported at the center of the through hole 26 via a pair of bending portions 21 at both ends. Each bending portion 21 projects substantially in an S shape from the inner peripheral surfaces of the through holes 26 facing each other, and is arranged along the through hole 26 to near the base end of another facing bending portion 21. The flexible portion 21 has elasticity and is formed to be thinner than the upper side wall of the case main body 12, and the lower side surface of the flexible portion 21 is located above the lower side surface of the upper side wall of the case main body 12. ing.

As shown in FIG. 2, the upper portion of the pressing portion 22 protrudes from the case body 12. An indenter portion 23 is formed to protrude downward from the lower surface of the pressing portion 22, and a tip of the indenter portion 23 is a switch as a switch portion on a substrate 27 provided on the upper surface of the lower side wall of the case body 12. The main body 24 is opposed to the actuator 24a with a slight gap.

On the lower surface of the upper wall of the case body 12,
Overload prevention pieces 25 as overload prevention portions are formed on the periphery of the through hole 26 so as to face each other, and the front end thereof extends below the lower surface of the pressing portion 22.

Then, on the upper surface of the upper side wall of the case body 12,
The seal part 28 is adhered, and the seal part 28 is
Except for the warning display section 14, the load state display sections 15a to 15c, and the output level display sections 17a to 17e, the upper surface of the upper wall of the case main body 12 is covered.

As shown in FIG. 1 and FIG.
On the lower surface of 2, a battery storage chamber 30 for storing batteries 31 as four batteries is recessed (only one battery 31 is shown in FIG. 4).

The battery compartment 30 has four battery compartments 3
0a are arranged side by side, and a positive connection terminal 32 and a negative connection terminal 34 are alternately arranged on one side of the battery storage chamber 30 corresponding to the battery compartment 30a, and the other side is oppositely arranged. Negative connection terminal 34, negative connection terminal 3
They are arranged in the order of 2.

In the battery compartment 30a, a pair of protruding portions 33 as a positive pole selection shape portion protrude toward the other side on both sides surrounding each positive connection terminal 32. The both protruding portions 33 are formed so that the positive electrode 31a of the battery 31 properly accommodated in the battery compartment 30a is inserted therein and can be connected to the positive connection terminal 32. In other words, the distance between the opposing side surfaces of both protruding portions 33 is slightly longer than the diameter of the positive electrode 31a and
It is shorter than the diameter of one body.

As shown in FIG. 4, each battery compartment 30
The battery 31 is accommodated in a. A positive pole 31 a protruding from the center of one side of each battery 31 is inserted between the protruding portions 33 and abuts on each positive connection terminal 32.

On the other hand, the negative pole 31b on the other side of each battery 31 is abutted against the bias of the spring-like negative connection terminal 34 inside the battery storage chamber 30. Next, the electrical configuration of the high frequency generator 11 will be described with reference to FIG.
3 is an electric circuit diagram of the high frequency generator 11. FIG.

In FIG. 5, the high frequency generator 11 includes a power supply circuit 49, a switch circuit, a CPU 41, a display circuit, and an output circuit 39. The emitter / collector of the transistor TR1 is connected between the plus terminal of the battery 31 as a battery and the input terminal of the output generator 42. Base of transistor TR1 and battery 3
The resistor R1 is connected between the positive terminal 1 and the positive terminal. A resistor R2 is connected between the base of the transistor TR1 and the output terminal of the CPU 41.

The emitter / collector of the transistor TR2 and the three-terminal regulator 43 are connected between the plus terminal of the battery 31 and the input terminal of the CPU 41. The output terminal of the three-terminal regulator 43 is connected to the minus terminal ( In FIG. 5, it is shown by a ground symbol and will be described in the same manner.).

A resistor R3 is connected between the base of the transistor TR2 and the plus terminal of the battery 31, and the base of the transistor TR2 is connected to the minus terminal of the battery 31 via the resistor R4 and the collector / emitter of the transistor TR3. It is connected to the. The base of the transistor TR3 is connected to the output terminal of the CPU 41 via the resistor R5, and the resistor R6 is connected between the base of the transistor TR3 and the resistor R4.

The power supply circuit 49 includes a transistor TR
1, TR2, TR3, resistors R1 to R6, and a three-terminal regulator 43. Resistance R4 and battery 31
The diode D1 and the power switch 13 are connected between the minus terminals of the switch. A resistor R7 and a diode D2 are connected between the input terminal of the CPU 41 and the power switch 13.

Each of the switches 16, 18a, 18 is connected between each input terminal of the CPU 41 and the minus terminal of the battery 31.
b, 19a and 19b are connected respectively. The switch circuit includes switches 13, 16, 18a, 18b,
19a and 19b.

Display units (illustrated by light-emitting diode symbols in FIG. 5) 14, 15a to 15c and 17a to 17e are connected between the output terminals of the CPU 41 and the CPU 41, respectively. The terminal is a battery 31
Connected to the negative terminal of The display circuit includes display units 14, 15a to 15c, and 17a to 17e.

The output terminal and the input terminal of the CPU 41 are connected to the input terminal and the output terminal of the output generator 42, and the output terminal of the output generator 42 is connected to the minus terminal of the battery 31. A primary side coil 45 of the transformer 44 is provided between the two input / output terminals of the output generator 42.
Is connected.

Between the pair of output terminals 20a and 20b,
The capacitor C1, the secondary coil 46 of the transformer 44, and the capacitor C2 are connected, and one end of the secondary coil 46 is connected to the input port of the CPU. The output circuit 39 includes an output generator 42, a transformer 44, a capacitor C
1 and C2.

The CPU 41 includes a ROM, a RAM (not shown)
And the ROM stores a control program.
In the present embodiment, the CPU 41 constitutes a control means and constitutes a first judging means, a first disabling means, a second judging means, and a second disabling means. Further, the transistor TR3 constitutes a cutoff means.

Next, the operation of the high-frequency generator 11 of this embodiment will be described. First, the switches 13, 16, 18a, 18b, 19a, 19b of the high frequency generator 11
The operation of will be described.

When the pressing portion 22 is pressed toward the switch main body 24 together with the seal portion 28, the pressing portion 22 moves toward the switch main body 24 against the elasticity of the bending portions 21. Then, the tip of the indenter portion 23 is
actuator 2 while maintaining a parallel state to
Press 4a. Thereafter, when the pressing portion 22 is further pressed together with the seal portion 28, the lower surface of the pressing portion 22 and the overload prevention piece 2 are pressed.
5 The upper surface near the tip is in contact with the upper surface.

Therefore, the actuator 24a is not pushed further at the tip of the indenter portion 23. Then, when the pressing on the pressing portion 22 is released, the pressing portion 22 is returned to the original state by the elasticity of the bending portion 21, the tip of the indenter portion 23 is separated from the actuator 24a, and the actuator 24a is returned to the original position. .

Next, the battery storage room 3 of the high frequency generator 11
The operation of 0 will be described. As shown in FIG.
When the battery 1 is stored in the battery storage chamber 30, the positive electrode 31 a and the negative electrode 31 b of the battery 31 are disposed so as to correspond to the positive connection terminal 32 and the negative connection terminal 34 of the battery storage chamber 30, respectively. And each connection terminal 32,
34 is electrically connected.

On the other hand, as shown by a two-dot chain line in FIG. 4, the positive pole 31a and the negative pole 31b of the battery 31 are connected to the negative connection terminal 34 of the battery compartment 30a of the battery housing 30.
If an attempt is made to store the battery 31 by mistake so as to correspond to the positive connection terminal 32, the end of the battery 31 on the negative pole 31b side is brought into contact with the tip of a pair of protrusions 33, so that the battery 31 and the connection terminal 32 , 34 are not electrically connected.

Next, the operation of the electric circuit of the high-frequency generator 11 will be described with reference to the flowchart of FIG. 6 and the circuit diagram of FIG. First, when the power switch 13 is turned on, the transistor TR2 is turned on, and power is applied to the CPU 41 via the three-terminal regulator 43.

The CPU 41 to which the power is applied starts up,
The control program stored in the OM is read, and the processing according to the flowchart of FIG. 6 is executed based on the control program.

In step (hereinafter, step is referred to as S) 1, a check process is performed. First, the CPU 41 causes the transistor TR3 to apply an ON signal. Transistor T
R3 is turned on based on the on signal. Then, the transistor TR3 holds the ON operation of the transistor TR2, and holds the power supply applied to the CPU 41. Then, the CPU 41 resets the first to third counters, resets the flag, checks the internal circuit, switches 16, 18a, 18b, 19a, and 19b.
Is turned on, and the process proceeds to S2.

In S2, it is determined whether or not there is an abnormality in the check processing in S1. For example, it is determined whether or not the switches 16, 18a, 18b, 19a, and 19b in the check processing in S1 are turned on. The switches 16, 18a, 18
If b, 19a, and 19b are already on before the power switch 13 is turned on, the CPU 41
Each switch 16, 18a, 18b, 19a, 19
Since an ON signal is input from b, determination is made based on the presence or absence of the ON signal. If it is determined in S2 that the switch is on, the process proceeds to S3. If it is determined that the switch is not on, the process proceeds to S5.

In the warning process of S3, the CPU 41
A control signal is applied to the warning display unit 14 to turn on the warning display unit 14. Then, in the power-off processing of S4, C
The PU 41 applies an off signal to the transistors TR1 and TR3, and exits this flowchart. Since the transistor TR1 is turned off based on the off signal from the CPU 41, the power supply to the output generator 42 is cut off. When the power is turned on, S1, S2 and S1, S2,
When the process proceeds to S3 via S5, the transistor TR
1 is not originally turned on, the output generator 42
No power is supplied to the

The transistor TR3 is connected to the CPU 41
Of the transistor TR2
However, since the transistor TR3 is turned off based on the turning-off operation of the transistor TR3, the power supply to the CPU 41 is cut off.

After shifting from S2 to S5, it is determined in S5 whether the power switch 13 is on. That is, the determination is made based on whether or not the input board connected to the power switch 13 is at the LO potential. That is, when the ON operation of the power switch 13 is released, the power switch 13 is released.
Returns to the off position when the power switch 13 is normal, but the power switch 13 is turned off by assuming that the power switch 13 does not return to the off position even if the on operation of the power switch 13 is canceled for some reason. It is determined whether or not there is.

If it is determined that the power switch 13 is turned on, in this case, it is determined that the power switch 13 is in an abnormal state in which the power switch 13 is not turned off, and the process proceeds to S3. If it is determined that the power switch 13 is not in the ON state, it is determined that the power switch 13 has normally returned to the OFF position, and the process proceeds to S6.

In S6, the CPU 41 executes a main program process. Here, when a switch other than the power switch 13 is turned on / off, processing is performed based on the operation. First, the transistor T
An on signal is applied to R1 to turn on transistor TR1. Then, power is supplied from the battery 31 to the output generation device 42.

Then, a corresponding process is performed based on a normal process, that is, a necessary switch-on operation. For example, when the output switch 19b is turned on, the CPU 41 applies a control signal to the output generator 42 based on the on operation. Then, the output generator 42 outputs a high frequency from the output terminals 20a and 20b via the transformer 44.

When the output switch 19a is turned on,
Via a CPU 41, an output generator 42, and a transformer 44,
The output of the high frequency from the output terminals 20a and 20b is stopped.
Similarly, when the output level changeover switches 18a and 18b are turned on, a high frequency of a level based on the on operation is output from the output terminals 20a and 20b via the CPU 41, the output generator 42, and the transformer 44. . When the test switch 16 is turned on, the CPU 41
Perform a test based on that operation. Then, the process proceeds to S7.

In S7, input / output check processing is performed.
The CPU 41 includes a first counter that measures an elapsed time since the activation of the CPU 41. The first counter measures the elapsed time since the activation of the CPU 41. This first counter includes switches 16, 18a,
When any one of 18b, 19a, and 19b is turned on, the elapsed time is reset to 0, and counting is started again.

The CPU 41 operates the switches 16, 1
A second counter is provided for measuring an elapsed time after one of 8a, 18b, 19a, and 19b is turned on. Each switch 16,
The elapsed time from when any one of 18a, 18b, 19a, and 19b is turned on is measured. This second counter is provided for each of the switches 16, 18a, 18b, 19
When any one of a and 19b is turned on again, the elapsed time is reset to 0 and counting is started again.

Further, the CPU 41 has a third counter for measuring an elapsed time from a change in the potential of the input port connected to one end of the secondary coil 46 of the transformer 44. That is, the CPU 41 detects whether or not the potential of the input port connected to one end of the secondary coil 46 has changed. Note that the change in the potential means a change from the LO potential to the HI potential or from the HI potential to the LO potential. This third counter includes output terminals 20a, 20
Each time the output b changes, the elapsed time is reset to 0 and counting is started again. Then, the process proceeds to S8.

In S8, it is determined whether or not the elapsed time of each of the first to third counters measured in S7 has exceeded the corresponding predetermined time. If it is determined that at least one of the first to third counters has elapsed for a predetermined time, S
Move to 3.

That is, when the time measured by the first counter has exceeded the predetermined time, it is determined that the time elapsed since the activation of the CPU 41 is too long and that the abnormality is abnormal. If the time measured by the second counter has passed the predetermined time, the elapsed time since the operated switch was turned on is too long, and it is determined that the switch is abnormal. If the time measured by the third counter has passed the predetermined time, it is determined that the time elapsed since the output change from the output generator 42 disappeared is too long, and that the abnormality is abnormal.

On the other hand, if it is determined that none of the first to third counters has elapsed for the predetermined time or more, it is determined that the counter is normal and the process returns to S6 to repeat the same loop. According to the high frequency generator 11 of the present embodiment, the following effects can be obtained.

(1) According to the present embodiment, the CPU 41
Are switches 16, 18a, 18b, 1
When it is determined that at least one of 9a and 19b is on (S2), the CPU 41 turns on the warning display unit 14 (S3). Then, the CPU 41 outputs an off signal to the transistor TR3, and outputs
R3 is turned off (S4). By turning off the transistor TR3, the electric circuit of the high-frequency generator 11 stops. In this way, when the power switch 13 is turned on, the other switches 16, 18a, 18b, 19
When at least one of a and 19b is in the ON state, the electric circuit of the high-frequency generator 11 is stopped without applying power to the output generator 42. Therefore, it is possible to prevent sudden output from occurring at the output terminals 20a and 20b.

Therefore, it is possible to prevent the output terminals 20a and 20b from generating a sudden output and to prevent the circuit from being damaged. Further, since no power is supplied to the output generator 42, malfunction can be prevented when, for example, an electric scalpel is connected to the output terminals 20a and 20b. Further, the user can know the abnormal state by turning on the warning display unit 14.

(2) According to the present embodiment, after the transistor TR3 is turned on, the CPU 41 determines that the power switch 13 is turned on to determine that there is an abnormality (S5), and turns on the warning display unit 14. (S3). Then, the CPU 41 turns off the transistor TR2,
The transistor TR3 is turned off along with the transistor TR2 being turned off (S4). As described above, when both the transistor TR3 and the power switch 13 are turned on, it is determined that the power switch 13 is turned on abnormally, and by turning off the transistors TR2 and TR3, the electric circuit of the high frequency generator 11 is turned off. To stop. Thus, the electric circuit can be stopped without applying power to the output generator 42.

Therefore, since no power is supplied to the output generator 42, for example, the electric scalpel is connected to the output terminals 20a and 20a.
When connected to b, malfunction can be prevented.
Further, the user can know the abnormal state by turning on the warning display unit 14.

(3) According to the present embodiment, the pressing portion 22
Are supported at both ends by a pair of flexures 21. Further, the movement of the pressing portion 22 in the direction of the switch main body 24 is restricted by the overload prevention piece 25.

Therefore, when the pressing portion 22 is pressed toward the switch body 24, the tip of the indenter portion 23 is
It does not hit against a. When the pressing portion 22 is pressed toward the switch main body 24 with an excessive force, the pressing portion 22 is pressed.
Of the indenter part 2 because the lower surface of the
3 is restricted from moving toward the switch body 24.

Accordingly, even if the pressing portion 22 is pressed toward the switch main body 24 with an excessive force, the indenter portion 23 does not press the actuator 24a more than necessary, so that an excessive load is suppressed on the switch main body 24. be able to.
Further, since the overload is suppressed from being applied to the switch main body 24, the life of the switch main body 24 can be extended.

(4) According to the present embodiment, a pair of projecting portions 33
When the battery 31 is to be stored in the battery compartment 30a in a state opposite to the normal storage state, the protrusion 3
3 interfered with the negative pole 31b, thereby making the connection with the positive connection terminal 32 impossible.

Therefore, even if the battery 31 is mistakenly placed, power is not supplied to the electric circuit of the high-frequency generator 11, so that malfunction and failure of the electric circuit can be prevented. (5) According to the present embodiment, the CPU 41
When the CPU 41 determines that the elapsed time after the activation has elapsed for a predetermined time or more (S8), the CPU 41 turns on the warning display unit 14. (S3). And the CPU 41
Turns off the transistor TR1 and turns off the transistor T1.
TR3 is turned off together with R1 being turned off (S
4). For this reason, after the power switch 13 is turned on, the switches 16, 18a, 18b, 19
a and 19b are not turned on, the high frequency generator 1
1 turns off. Therefore, it is possible to prevent unnecessary consumption of power due to, for example, a case where the power is turned on accidentally.
In addition, the user can know that the power has been turned off by lighting the warning display unit 14.

(6) According to the present embodiment, the CPU 41
Are the switches 16, 18a, 18b, 19a, 19b
And a second counter for measuring an elapsed time from when any one of them is turned on. It is determined whether the elapsed time of the second counter has exceeded a predetermined time (S
8) If the predetermined time has elapsed, the CPU 41
The warning display unit 14 is turned on (S3). And CPU4
1 turns off the transistor TR1, and turns off the transistor TR3 together with the turning off of the transistor TR1 (S
4). Therefore, when the high-frequency generator 11 is in use, the switches 16, 18a, 1
When 8b, 19a and 19b are not turned on, the power supply of the high frequency generator 11 is turned off. Therefore, unnecessary consumption of power due to forgetting to turn off the power can be prevented. In addition, the user can know that the power has been turned off by lighting the warning display unit 14.

(7) According to the present embodiment, the CPU 41
Is provided with a third counter that measures the elapsed time after the output of the output terminals 20a and 20b changes, that is, the potential of the input port connected to one end of the secondary coil 46 changes. It is determined whether the elapsed time of the third counter has elapsed a predetermined time or more (S8). If the predetermined time has elapsed, the CPU 41 turns on the warning display unit 14 (S8).
3). Then, the CPU 41 turns off the transistor TR1 and turns off the transistor TR3 together with the turning off of the transistor TR1 (S4). Therefore, if the output of the output terminals 20a and 20b does not change even after the predetermined time has elapsed while the high-frequency generator 11 is in use,
The power of the high frequency generator 11 is turned off. Therefore, unnecessary consumption of power due to forgetting to turn off the power can be prevented.
In addition, the user can know that the power has been turned off by lighting the warning display unit 14.

The above embodiment may be modified as follows. -Each switch 13, 16, 18a, 18 of this embodiment
A pair of overload prevention pieces 25 of b, 19a and 19b are integrally formed on the lower surface of the upper side wall of the case main body 12, and the front ends thereof extend below the lower surface of the pressing portion 22.

As shown in FIG. 7, a cylindrical overload preventing portion 48 having a diameter smaller than that of the through hole 26 and having the same height as the lower surface of the upper wall of the case main body 12 is projected into the shape of the substrate 27. It may be fixed. By doing so, the pressing portion 2
When the switch 2 is pressed toward the switch body 24, the lower surface of the bending portion 21 comes into contact with the upper surface of the overload prevention portion 48. Therefore, it is possible to prevent the tip of the indenter portion from coming into contact with the actuator 24a and prevent the actuator 24a from being overloaded.

[0085]

As described above in detail, according to the first aspect of the present invention, when the output switch means is turned on and the power switch means is turned on in a state where the inside of the device has failed, a predetermined signal to the output circuit is supplied to the output circuit. It is possible to disable the output of the control signal and prevent malfunction.

According to the invention of claim 2, in addition to the effect of the invention of claim 1, when the output circuit is abnormally operated, the operation of the output circuit is disabled, and malfunction can be prevented.
According to the third aspect of the present invention, in addition to the effects of the first or second aspect of the present invention, when the operation of the output circuit is disabled, a warning operation is performed by the warning means. You can tell if it has become inoperable.

According to a fourth aspect of the present invention, in addition to the effects of any one of the first to third aspects of the present invention, in addition to the effects of the first aspect, the power supply switch means is provided in a state where the switch means is in an on state and a state in which the inside of the device has failed. The power supply to the control means of the power supply circuit is shut off when the switch is turned on and when the output circuit is abnormally operated. Therefore, erroneous operation can be prevented and damage to the circuit can be suppressed.

According to the fifth aspect of the present invention, in addition to the effects of any one of the first to fourth aspects, the indenter of the power switch means or the output switch means is bent with respect to the case body. It is supported on both sides through the part. At the same time, the power switch means or the output switch means is provided with an overload prevention section for suppressing an overload on the switch section.

Accordingly, it is possible to prevent the indenter portion from pressing in the direction relative to the switch portion and to prevent the switch portion from being overloaded by an external operation. According to the invention of claim 6, in addition to the effect of the invention of any one of claims 1 to 5, a positive electrode selection shape is provided on the periphery of the positive connection terminal of the battery storage space of the case body. Part is formed. The positive pole selection shape part disables contact between the positive connection terminal and the negative pole, and allows contact with the positive pole.

Therefore, even if the positive and negative poles of the battery are arranged to correspond to the negative and positive connection terminals of the battery storage space, the battery is not electrically connected to the power supply circuit.

[Brief description of the drawings]

FIG. 1 is a front view of a medical electric output device according to an embodiment.

FIG. 2 is a sectional view of the switch unit.

FIG. 3 is a front view of the switch unit.

FIG. 4 is an explanatory view of a battery storage space.

FIG. 5 is a circuit diagram showing an electrical configuration of the medical electrical output device.

FIG. 6 is a flowchart showing the processing operation of the central processing unit.

FIG. 7 is a sectional view of another example of the switch unit.

FIG. 8A is a front view of a conventional switch unit;
(B) Sectional drawing of the switch part of a prior art.

[Explanation of symbols]

12 case main body, 13 power switch as power switch means, 14 warning display section as warning means, 16
... test switch as output switch means, 18a,
18b: output level changeover switch as output switch means, 19a, 19b: output switch as output switch means, 21: flexure section, 23: indenter section, 24: switch body as switch section, 25: as overload prevention section Overload prevention piece, 30 ... battery storage chamber as battery storage space, 31 ... battery as power supply means and battery, 3
1a ... plus pole, 31b ... minus pole, 32 ... plus connection terminal, 33 ... projection part as plus pole selection shape part, 3
4 ... Negative connection terminal, 48 ... Overload prevention section, 49 ... Power supply circuit, TR3 ... Transistor as cutoff means.

Claims (6)

[Claims] A power switch unit; an externally operable output switch unit; and an electric power supplied based on an ON operation of the power switch unit, and an input signal based on an ON operation of the output switch unit. A medical output device including a control unit that outputs a predetermined control signal to an output circuit corresponding to the output switch unit based on the input signal; First determining means for determining whether the output switch means is on, and first determining means for disabling output of a predetermined control signal to the output circuit when determining that the output switch means is on. A medical electrical output device including disabling means. 2. The control unit further includes a second determination unit that determines whether the output circuit is operating abnormally,
2. The medical electrical output device according to claim 1, further comprising a second disabling unit that disables the operation of the output circuit when the second determination unit determines that the output circuit is abnormally operating. 3. A warning means is connected to the control means, and when the first disabling means or the second disabling means performs the disabling operation, the control means performs a warning operation on the warning means. The medical electrical output device according to claim 1 or 2. 4. A power supply circuit capable of supplying power to a control means and an output circuit based on an ON operation of the power switch means, wherein the first disabling means or the second disabling means controls the power circuit. The medical electric output device according to any one of claims 1 to 3, wherein a cut-off unit that cuts off power supply to the unit is operated. 5. The power switch means or the output switch means is in opposition to the indenter part which is operably supported externally via a bending part with respect to the case body via a bending part, and is opposed to the indenter part. The indenter portion comprises: a switch portion that can be turned on and off by the indenter portion when the indenter portion is externally operated; and an overload prevention portion that suppresses an overload on the switch portion by the external operation of the indenter portion. The medical electrical output device according to any one of claims 1 to 4. 6. The medical electric output device includes a case main body that stores means having various functions, the case main body includes a battery storage space that forms a part of the power supply circuit, The storage space is provided with a protruding positive electrode protruding from one end surface of the battery and a pair of positive and negative connection terminals respectively contacting the negative electrode provided on the other end surface, and a peripheral portion of the positive connection terminal is provided. And a positive electrode selection shape portion which is in contact with an end of the battery to disable contact between the positive connection terminal and the negative electrode and allow contact with the positive electrode. The medical electrical output device according to claim 5.