JPH11203978A - Medical care foot switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a medical care foot switch in which an operational signal is not outputted even if a pedal is moved other than a state in which a medical care foot switch is routinely used. SOLUTION: In a frame 2 of a foot switch 1, a light shield plate 17 is provided at a tip end of a switching arm 15 turning around an axis 16 by pedal stepping operation, and if this light shield plate 17 slips off downward from between a light emitting element and a light receiving element of a photo interrupter 18 forming an incorporated switch, it is switched ON. Switches 22 are provided respectively at each corner part of a bottom face, in a state in which the foot switch 1 is placed on a floor 25, it is turned ON by its self-weight, in a state in which it is not placed on the floor 25 it is turned OFF, when this switch is ON, an ON output signal is outputted when the incorporated switch is operated, but when OFF, it is inhibited.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medical foot switch used for turning on / off a power supply in a medical device such as an electric scalpel.

[0002]

2. Description of the Related Art When using a medical device such as an electrocautery device or an ultrasonic suction device, a surgeon operates a handpiece by hand, and outputs ON / OFF of a medical device connected to a device main body by a cable. This is done by stepping on the foot switch pedal.

[0003] This medical foot switch has a mechanism in which when a pedal supported by a spring is depressed, a lever inside the medical foot switch is operated to activate a built-in switch and output.

[0004]

However, when a conventional medical foot switch is installed on the floor, the pedal may move unintentionally when a shock such as vigorously placing, falling, or dropping is applied. If the output of the apparatus is not set, a warning is output each time, and there is a problem that it is troublesome.

[0005] In addition, the above problem also occurs when the pedal is accidentally pressed during storage.

(Object of the Invention) The present invention has been made in view of the above points, and the output of the built-in switch can be obtained even when the pedal is moved in a state other than a state where the medical foot switch is normally used, that is, a state where the foot switch is placed on the floor. An object of the present invention is to provide a medical foot switch that can be prevented.

[0007]

In a medical foot switch having a structure in which a built-in switch is turned on and off by depressing a pedal, means for preventing output from the built-in switch in a state other than a normal use state is provided. In a state other than the normal use state, even if the pedal is pressed, the output by the built-in switch can be prevented, so that the troublesome operation of canceling the warning output issued by the medical device when the output is not set can be eliminated.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. (First Embodiment) FIGS. 1 to 5 relate to a first embodiment of the present invention, and FIG. 1 is a plan view of a medical foot switch according to the first embodiment as viewed from above. FIG. 2 shows FIG.
3 shows the internal structure from the back side, FIG. 4 shows the internal structure from the back side, FIG. 4 shows the BB cross section in FIG. 1 in a state away from the floor, and FIG. 5 depresses each pedal. 1 shows an equivalent circuit of a switch circuit including a built-in switch that is turned on / off.

The purpose of the present embodiment is to prevent the operation signal from being output from the built-in switch in a state other than the normal use state, and more specifically, to operate the built-in switch in a state other than the normal use state placed on the floor. An object of the present invention is to provide a medical foot switch that does not output an operation signal even when it is operated.

A medical foot switch (hereinafter simply referred to as a foot switch) 1 according to a first embodiment of the present invention shown in FIG.
The three pedals 3A, 3B, 3C are arranged in the longitudinal direction, and the operation of depressing each pedal 3I (I represents A, B, C) turns off a built-in switch provided inside the pedal.
(Cut) to ON (enter) or vice versa
F.

A partition plate 4 for partitioning is provided between the adjacent pedals 3A and 3B and between the pedals 3B and 3C so as to protrude upward, thereby preventing an operator from simultaneously stepping on a plurality of pedals by mistake. doing.

A cable 5 is connected to a medical device such as an electric scalpel from the front of the foot switch 1 (upward in FIG. 1).
Pedal 3 connected by and set to different functions
By operating A, 3B and 3C, operations such as power ON / OFF of the medical device can be controlled.

As shown in FIG. 2, the upper surface of the frame 2 is formed, for example, in such a manner that the front side is high and the rear side is low so as to be easily operated by a foot. Pedal cover 7 provided with free bellows 7A
Is fixed to the frame 2 around its opening by screws 8.

A chassis 9 formed of a rectangular metal plate is housed inside the ceiling covered with the pedal cover 7, and the chassis 9 is moved, for example, by springs 11 provided at two front and rear portions so that the pedal cover 7 is located on the upper side of the opening. It is urged to protrude. In FIG. 2, a cross section taken along line AA in FIG.
FIG. 4 shows the internal structure of the pedal 3C.
As shown in FIG. 7, the other pedals 3A and 3B have basically the same structure as the pedal 3C.

Each end of each spring 11 is fixed to the chassis 9 of the pedal 3I and the frame 2 and always exerts a force in a direction to separate them. Therefore, in a state where the operation of depressing the pedal 3I is not performed, the bellows portion 7A of the pedal cover 7 extends along with the chassis 9 as shown in FIG.
The ceiling of the pedal 3I protrudes above the opening. The portion of the pedal cover 7 outside the chassis 9 is made thick, and its outer surface is formed with anti-slip irregularities.

Each chassis 9 constituting the pedal 3I includes:
A pedal arm 12 that supports the pedal 3I to rotate by pressing is mounted. The base end of the pedal arm 12 is centered on a shaft 13 fixed to the front end side of the frame 2 (usually the front side of the operator when performing an operation of stepping on the pedal 3I; upper side in FIG. 1, left side in FIG. 2). It is rotatably mounted.

A connecting member 14 is attached to the pedal arm 12 at a position spaced rearward from the shaft 13 at a position facing the vicinity of the center of the chassis 9. Therefore, the connecting member 14 is interlocked with the pedal arm 12. .

As shown in FIG. 3, the connecting member 14 extends in the axial direction of the shaft 13 and is engaged in a hole provided in a switching arm 15 for performing switching (of a built-in switch). . This switching arm 15
Is mounted at a position separated from the shaft 13 so as to be rotatable about a shaft 16 parallel to the shaft 13.

The connecting member 14 has a shaft 13
Side, i.e., the front end side, is engaged with the hole of the switching arm 15, so that when the pedal 3 </ b> I is pressed downward, the pedal arm 12 rotates together with the chassis 9 around the axis 13, Accordingly, the connecting member 14 also rotates, and the switching arm 15 in which the end of the connecting member 14 is engaged with the hole rotates downward around the shaft 16 opposite to the shaft 13. I have.

As shown in FIGS. 3 and 4, a light-shielding plate 17 is attached to the other end of the switching arm 15. The light-shielding plate 17 includes a light-emitting element 18A and a light-receiving element 18.
B (see FIG. 5) facing each other
The light emitting element 1 which is inserted from below into the light emitting element 18A and the light receiving element 18B and constitutes the photo interrupter 18
8A is blocked from reaching the light receiving element 18B.

That is, the built-in switch built in the foot switch 1 is a photo interrupter 18, a light shielding plate 17 for blocking light from the light emitting element 18A from reaching the light receiving element 18B, and a light shielding element 17 for the light emitting element 18A. Light receiving element 1
8B.

The ON state of the built-in switch of the foot switch 1 means that the light of the light emitting element 18A of the photo interrupter 18 is changed from the OFF state in which the light shielding plate 17 is interposed between the photo interrupters 18. 18B.

As shown in FIG. 4, the photointerrupter 18 is mounted on a circuit board 19, and the circuit board 19 is fixed to the frame 2 via a spacer 20 with screws or the like. The opening at the bottom of the frame 2 is
Covered with.

In the present embodiment, as described below,
If the built-in switch is not in a normal use state, more specifically, if the foot switch 1 is not placed on the floor, the built-in switch itself is turned off even when the built-in switch is operated.
The switch circuit includes means for preventing the operation signal corresponding to ON from being output even when the signal becomes N.

In other words, the foot switch 1 has a means for detecting a normal use state mounted on the floor, and an operation signal is output when the built-in switch is operated only in the normal use state. I have.

At each corner of the bottom of the foot switch 1,
A mechanical switch 22 is attached to each. Each switch 22 is connected to the board 19 by a harness (not shown).

Each switch 22 is a bellows 2 made of a rubber member.
3, a plate 24 for pressing the push button 22A of the switch 22 is fixed to the bottom of the bellows 23.
Then, as shown in FIG.
5, the plate 24 presses the push button 22A by the weight of the foot switch 1, the output of each switch 22 is turned on, and the detecting means for the state where the foot switch 1 is placed on the floor is formed. I have.

Each of the switch circuits of the foot switch 1 has a circuit configuration in which no output is produced even when the pedal is depressed unless both switches 22 on the diagonal are turned on. FIG. 5 shows an example of the configuration of the switch circuit.

The anode of the light emitting element 18A has a power supply terminal of + Vc.
Supplies a current through the resistor R1 and emits light constantly. In a state where the pedal 3I is not pressed, the light is in a light-shielded state where the light is shielded by a light-shielding plate 17 interposed therebetween as shown by a solid line, and does not reach the opposing light receiving element 18B.

The light receiving element 18B is composed of, for example, a phototransistor, the collector of which is connected to the power supply terminal + Vc, and the emitter of which is connected to the ground via the resistor R2. In the light-shielded state, the output of the light-receiving element 18B is “L”, and the light from the light-emitting element 18A reaches the light-receiving element 18B by pressing the pedal 3I to move the light-shielding plate 17 downward.
In the non-light-shielded state shown by the dashed line, the output of the light receiving element 18B becomes "H". That is, the built-in switch is turned ON.

The output of the light receiving element 18B and the outputs of the two diagonally located switches 22 and 22 constitute a switch circuit for driving a relay switch 27 through an AND circuit 26. The contact on the AND circuit 26 side of each switch 22 is connected to the ground by a resistor R3, and is pulled down to “L” level. The other contact is the power supply terminal +
Vc, and the contacts on the AND circuit 26 side are set to "H" level when each switch 22 is turned on.

Next, the operation of the present embodiment will be described. In the foot switch 1 having such a configuration, if the operation of depressing the pedal 3I is not performed, as shown in FIG. 4, the light shielding plate 17 provided at the tip of the switching arm 15 is connected to the light emitting element of the photo interrupter 18 constituting the built-in switch. This is a light-shielding state in which light is inserted between elements to shield light.

In this light shielding state, as shown in FIG. 5, the output of the light receiving element 18B of the photo interrupter 18 is "L", and the built-in switch is in the OFF state.

When the foot switch 1 is placed on the floor 25 as shown in FIG. 2, each switch 22 is turned on by the push button being pressed by the plate 24 under its own weight. Becomes In this state, the switch 22 is turned on as shown by a two-dot chain line in FIG. 5, and the output of the switch 22 to the AND circuit 26 becomes "H".

Therefore, in this state, the pedal 3I is depressed, the chassis 9 is lowered, the pedal arm 12 is rotated about the shaft 13 as a fulcrum, and the switching arm 15 with the coupling member 14 engaged in the hole is pivoted. By rotating the light shielding plate 16 around the light shielding plate 16, the light shielding plate 17 is disengaged downward from between the light emitting element and the light receiving element of the photo interrupter 18, and is brought into a state shown by a two-dot chain line in FIG.

Then, the light receiving element 18B is replaced with the light emitting element 18A.
, The output of the light emitting element 18A becomes "H", and the built-in switch is turned on. Since each switch 22 is ON, the AND circuit 26 passes the output of the light receiving element 18B constituting the built-in switch. That is, when the foot switch 1 is placed on the floor 25, the pedal 3
By operating I, an operation signal of the built-in switch is output.

That is, when the operation of depressing the pedal 3I is performed in a normal use state, an operation signal for turning on the built-in switch is driven via the AND circuit 26 to drive the relay switch 27 and is output from the switch circuit.

On the other hand, the foot switch 1 is
5, the contacts of the switches 22 are OFF as shown by the solid line in FIG.
The output to the AND circuit 26 is "L".

In this state, even if an operation for turning on the built-in switch is applied by applying a force to the pedal 3I, the output to the AND circuit 26 remains "L", and the pedal 3I is erroneously erroneous in a normal use state. No operation signal is output even if 3I is operated.

Therefore, according to the present embodiment, if the foot switch 1 is not placed on the floor, no operation signal is output even if a force is applied to the pedal 3I, so that a warning is issued even if the pedal 3I is depressed during installation. It is not necessary to perform a troublesome operation or the like for canceling the operation. In FIG. 5,
Instead of providing the relay switch 27, the output of the AND circuit 26 may be a switch output by operating each pedal of the foot switch 1.

In FIG. 5, two switches 22 are ON.
In this case, the operation signal is output from the built-in switch. However, the present invention is not limited to this. For example, if all four switches 22 are not turned on, the operation is not performed even when the pedal 3I is depressed. A simple switch circuit configuration or a switch circuit configuration in which no output is produced even when the pedal 3I is depressed unless the three switches 22 are turned on may be used. One switch 22 is ON
Otherwise, a switch circuit configuration that does not output even if the pedal 3I is depressed may be used.

(Second Embodiment) Next, a second embodiment of the present invention will be described with reference to FIGS. FIG.
FIG. 7 shows a side cross section of a central portion of the foot switch according to the second embodiment in the longitudinal direction. FIG. 7 shows a structure of the tilt sensor.
FIG. 8 is a diagram illustrating the operation of the tilt sensor. The purpose of this embodiment is the same as that of the first embodiment.

FIG. 6 is a side sectional view of the central portion in the longitudinal direction, showing the internal structure of the pedal 3B in the foot switch 31 of the second embodiment. In the first embodiment, the switches 22 are provided at the corners of the bottom surface of the frame 2. However, in the present embodiment, the inclination sensor 32 is provided in the frame 2.

For example, as shown in FIG.
A screw 34 is attached to the mounting member 33 in the space above the shaft 13.
The tilt sensor 32 is mounted on a substrate 36 fixed horizontally by the and the spacer 35.

The details of the tilt sensor 32 are shown in three views of FIG. FIG. 7A is a plan view, and FIG.
7A is a sectional view, and FIG. 7C is a right side view of FIG. The tilt sensor 32 is provided between a photo interrupter 41 (a light emitting element and a light receiving element are opposed to each other) and a transparent box 38.
And a ball 39 made of a non-transparent member that moves according to the inclination is stored in the box 38. In FIG. 7, the side of the substrate 36 and the photo interrupter 41 is indicated by a two-dot chain line, and a box indicated by a solid line is shown. The structure on the 38 side is easily identified.

As shown in FIG. 7, a ball 39 made of a non-transparent material is placed in a box 38 made of a transparent material having legs 37. A lid 40 which is not limited to a transparent material is provided on the upper part of the box 38.
Is fixed so that the ball 39 does not come out of the box 38.

A photo-interrupter 41 mounted on a substrate 36 is arranged outside the bottom of the box 38. In this case, the light-emitting element and the light-receiving element of the photointerrupter 41 are arranged such that the central portion in the longitudinal direction of the box 38 is located between the two opposing elements.

The bottom surface 38A of the box 38 has an arc shape. When the substrate 36 is horizontal, the ball 39 is located at the lowest position of the center of the bottom surface 38A. In this state, as shown in FIG. The ball 39 is in the detection area 41A where the light emitting element and the light receiving element face each other, and shields the light of the light emitting element from reaching the light receiving element. In such a state, the tilt sensor 32 is attached to the frame 2. The photo interrupter 41 constituting the tilt sensor 32 is a harness (not shown) and a board 24 inside the foot switch 31.
(See FIGS. 3 and 4).

When the tilt sensor 32 tilts and the ball 39 moves to a position outside the detection area 41A, the output of the light receiving element is inverted from "H" to "L", for example.

When the built-in switch of the foot switch 31 is not in a normal use state by the tilt sensor 32, more specifically, when the built-in switch is operated and turned on when the foot switch 31 is tilted. Also constitute a switch circuit that does not output an operation signal.

For example, the switch circuit in this case uses one tilt sensor 32 in place of the two switches 22 in the switch circuit of FIG. 5, and outputs the output of the built-in switch and the tilt sensor 32 (of the 3-input AND circuit 26). Instead, it is configured to pass an AND circuit with two inputs. The other configuration is the same as that of the first embodiment, and the same members are denoted by the same reference numerals and description thereof will be omitted. Next, the operation of the present embodiment will be described.

When the foot switch 31 is not inclined with respect to the longitudinal direction, the ball 39 is in the detection area 41A as shown in FIG. In this state, the output of the tilt sensor 32 is "H". Referring to FIG. 5, two switches 22
Is turned on, and the AND circuit 26 is in a state of passing the signal of the built-in switch.

Therefore, when the built-in switch is turned on by depressing the pedal 3I, an operation signal of the ON is output. Also, when the switch is turned off, the operation signal is turned off.

On the other hand, when the foot switch 31 is tilted in the direction along the longitudinal direction, the bottom surface 38A of the box 38 has an arc shape with the detection area 41A of the photo interrupter 41 as the bottom. As shown in FIG. 8, the ball 39 is separated from the detection area 41A of the photo interrupter 41 by the action of gravity. In FIG. 8, reference numeral 42 indicates a horizontal plane in the longitudinal direction (this direction is a direction perpendicular to the plane of FIG. 6).

Then, the output of the inclination sensor 32 becomes "L". Referring to FIG. 5, two switches 22 are turned off.
In this case, the AND circuit 26 does not pass the signal of the built-in switch.

Therefore, even if the operation of depressing the pedal 3I to turn on the built-in switch does not output the operation signal.
That is, even if the built-in switch is operated by mistake, the operation signal is prevented from being output.

The foot switch 31 is denoted by reference numeral 4 in FIG.
When tilted in the direction of 3, since the side portion 38B of the box 38 has an arc shape with the detection area 41A of the photointerrupter 41 as an apex, the ball 39 also comes off the detection area 41A by the action of gravity. . Also in this case, even if the built-in switch is operated, the operation signal is not output.

The tilt sensor 3 according to the present embodiment
2 only needs to detect the inclination, and is not limited to the structure described with reference to FIG.

According to the present embodiment, the foot switch 3
If the pedal 1I is not in the horizontal state, the operation signal is not output even if the pedal 3I is operated. Therefore, the operation signal is not output even if the pedal 3I is pressed by mistake at the time of installation or storage. No more hassle.

(Third Embodiment) Next, a third embodiment of the present invention will be described with reference to FIGS. FIG.
FIG. 10 shows the structure of a foot switch according to the third embodiment of the present invention in a cross section of a pedal portion and a switching arm portion. That is, FIG. 9 corresponds to the cross-sectional position along the line AA in FIG. 1, and FIG. 10 corresponds to the cross-sectional position along the line BB in FIG. An object of the present embodiment is to provide a foot switch that does not output even when an impact is applied.

The foot switch 51 of the present embodiment is
In the foot switch 1 of the embodiment, the switch 2
2, the shock absorbing member 52 is provided on the bottom cover 21.
Is provided.

That is, in the foot switch 51, a plate-like shock absorbing member 52 is fixed to the back surface of the bottom cover 21. The configuration of the other parts is the same as that of the first embodiment, and the same members are denoted by the same reference numerals and description thereof will be omitted.

It should be noted that the shock absorbing member 52 in the present embodiment may be any material that absorbs the energy of a shock, and is made of a material such as silicon rubber or foam material, or a coil spring other than neoprene rubber. Mechanism. In addition, the chassis 2 of the foot switch 51 may be entirely made of a shock absorbing material.

Next, the operation of the present embodiment will be described. In a normal operation of stepping on the normal pedal 3I, since a force for continuously pressing the pedal arm 12 is applied, members such as the chassis 9 held by the spring 11 and the pedal arm 12 rotating around the shaft 13 are provided. Due to the inertia of these members, those members fall toward the bottom cover 21 and the connecting member 19 fixed to the pedal arm 12 also moves down.

The switching arm 15 rotating about the shaft 16 is also lowered, and the switching arm 1
When the light-shielding plate 17 fixed to one end of 5 is pulled down from the photo-interrupter 18, the built-in switch is turned on, and the operation signal is output.

In this case, the continuous pressing force is hardly attenuated by the shock absorbing member 52 (more specifically, the shock absorbing member 52 is contracted by the continuous pressing force,
Thereafter, the pressing force is not attenuated).

On the other hand, it is assumed that an impact is applied to the foot switch 51 by dropping or falling down, instead of a force for continuously pressing the pedal arm 12 as in a normal operation of depressing the pedal 3I.

Even if such an impact is applied, the impact is attenuated by the impact absorbing member 52, so that the lowering of the chassis 9 is prevented. Similarly, when the switching arm 15 is independently rotated, the built-in switch of the foot switch 51 is not turned ON by the energy of the shock attenuated by the shock absorbing member 52. With the above operation, it is possible to prevent the built-in switch which is not intended by the operator from being turned on by the impact applied to the foot switch 51.

This embodiment has the following effects. Foot switch 51 is ON even for unexpected fall or side-down
Since there is no danger that the foot switch 51 can be handled somewhat roughly, preparation and clearing can be speeded up.

The foot switch 51 of the present embodiment
Although the shock absorbing member 52 is attached to the bottom cover 21 in the embodiment, the shock absorbing member 52 may be detachably attached.

In other words, a concave portion is provided which substantially fits into the bottom shape of the existing foot switch (more precisely, is slightly smaller than the bottom shape and can be elastically pushed open and removably attached). For example, a shock absorbing member 52 made of a rubber member or the like integrally provided with a mountable portion may be mounted. In this way, by attaching to the existing foot switch, the third
The foot switch having the same effect as that of the embodiment can be realized.

(Fourth Embodiment) Next, a fourth embodiment of the present invention will be described with reference to FIGS. FIGS. 11 and 12 show the structure of a foot switch according to a fourth embodiment of the present invention in a cross section of a pedal portion and a switching arm portion. That is, FIG. 11 corresponds to the cross-sectional position along the line AA in FIG. 1, and FIG. 12 corresponds to the cross-sectional position along the line BB in FIG. The purpose of this embodiment is the same as that of the third embodiment. In this embodiment, for example, a damper means is further provided in the frame 2 in the third embodiment.

As shown in FIG. 11, in the foot switch 61 of the present embodiment, dampers 62 for absorbing an impact force are arranged inside each spring 11 for urging the pedal 3I upward, and each damper 62 and spring 11 connects the chassis 9 and the frame 2 around the opening below the chassis 9.

Each damper 62 is not limited to a general viscous damper, but may be any member that prevents the chassis 9 from moving unless a certain force or more is continuously applied. Also,
As shown in FIG. 12, a coil spring 63 is attached to an end 15A of the switching arm 15 opposite to the light shielding plate 17. 1 along the axis of the spring 63
1, a damper 64 is attached. The configuration of other parts is the same as that of the third embodiment.

Next, the operation of the present embodiment will be described. In a normal operation of depressing the normal pedal 3I, a force for continuously pressing the pedal arm 12 is applied, so that the operation is almost the same as in the third embodiment, and the built-in switch is turned on.

In this case, the shock absorbing member 52, the damper 6
2, 64 absorbs the continuous pressing force in the process of contracting, but does not absorb the pressing force in the contracted state, so that the rotation of the pedal arm 12, the lowering of the connecting member 19, and the shaft 16 as the center. When the switching arm 15 is lowered and the light-shielding plate 17 fixed to one end of the switching arm 15 is pulled down from the photo-interrupter 18, the built-in switch is turned on, and the operation signal is output.

On the other hand, it is assumed that an impact is applied to the foot switch 51 by dropping or falling down, instead of a force for continuously pressing the pedal arm 12 as in a normal operation of depressing the pedal 3I. Then, the impact force is
The shock energy is attenuated by the shock absorbing member 52 and the dampers 62 and 64, and the built-in switch is not turned on.

Therefore, the present embodiment can further prevent the built-in switch from being turned on in response to an impact force as compared with the third embodiment. In the present embodiment, a configuration in which the shock absorbing member 52 is not provided may be adopted. Alternatively, only one of the dampers 62 and 64 may be used.
In this case, the operation and effects are almost the same as those of the third embodiment.

(Fifth Embodiment) Next, a fifth embodiment of the present invention will be described with reference to FIG. An object of the present embodiment is to provide a medical foot switch that does not operate even when an impact is applied during installation or the like.

FIG. 13 shows a circuit configuration of the switch board 72 inside the foot switch 71. In the switch board 72, the output of a built-in switch 73 that is turned on / off by pedal operation is input to an AND circuit 74, and the one-shot multivibrator activated in response to the output of a shock sensor 75 that detects a shock force (in FIG. The output of a shot 76) is input to an AND circuit 74, and the output of the AND circuit 74 constitutes a switch circuit that controls the operation of the electric scalpel device 77.

The shock sensor 75 generates a signal when it receives a shock, and the one-shot multivibrator 76 receiving the signal outputs a signal of "L" for a certain period of time.
In the meantime, even if the switch 73 is operated (even if it becomes “H”), the signal of the switch 73 is not output to the electric scalpel device 77 until the signal from the one-shot multivibrator 76 returns to “H”. Configuration.
Other configurations are the same as in the first embodiment.

According to the present embodiment, since the switch 73 does not function for a certain period of time after the impact is detected,
When the foot switch 71 is installed on a floor or the like in order to use it, the troublesome operation of the switch 73 which is meaningless due to the impact and the trouble of canceling the warning output are improved.

(Sixth Embodiment) Next, a sixth embodiment of the present invention will be described with reference to FIGS. FIG. 14 shows the configuration of the switch circuit on the switch board, and FIG.
Reference numeral 5 denotes a structure near the impact detection switch. The purpose of this embodiment is the same as that of the fifth embodiment. In the foot switch 71 'of the sixth embodiment shown in FIG. 14, a switch board 72' inside thereof uses a shock detection switch 78 instead of the shock sensor 75 in FIG. The one-shot multivibrator (abbreviated as one-shot in FIG. 14) 76 is activated by the output of the sensor 78. Otherwise, it has the same circuit configuration as FIG.

FIG. 15 shows a configuration in the vicinity of the impact detection switch 78. The impact detection switch 78 is rotated by the photo interrupter 79 and the shaft 16 to rotate the photo interrupter 7.
9 and a light-blocking lever 80 that urges the rear end of the light-blocking lever 80 so as to be pushed up by a spring 81 (on the opposite side of the spring 81 with respect to the shaft 16). The photo interrupter 79 is held so as to always block the photo interrupter 79 at the end of the photo interrupter 80.

The elasticity of the spring 81 is set so that when a shock is applied to the foot switch 71, the spring 81 is faster than the lever (not shown) of the switch 73, and the light-blocking lever 80 of the shock detection switch 78 is operated. Other configurations are the same as those of the first embodiment.

Next, the operation of the present embodiment will be described. FIG.
The switch circuit shown in FIG. 4 generates a signal from the photo-interrupter 79 when the light-blocking lever 80 of the shock detection switch 78 rotates and separates from the photo-interrupter 79. When the signal is received from the one-shot multivibrator 76 for a predetermined time "L" Is output.

While the signal of “L” is output, even if the switch 73 is operated (even if it is set to “H”), the time until the signal from the one-shot multivibrator 76 returns to “H”, The signal of the switch 73 is not output to the electric knife device 77. This embodiment has the same effects as the fifth embodiment.

(Seventh Embodiment) Next, a seventh embodiment of the present invention will be described with reference to FIGS. FIG. 16 shows an endoscope system provided with the seventh embodiment, and FIG. 17 shows a storage box for storing a foot switch body. An object of the present embodiment is to provide a foot switch that does not output an operation signal in a stored state.

The endoscope system 82 shown in FIG. 16 has endoscope peripheral devices such as a light source device, an image processing device, and an electric scalpel device built in an endoscope housing device main body 83. At the lower end of the front end of the main body 83 of the endoscope housing device, a floor portion 84 on which a cable is wired on the back surface is laid forward, and is electrically connected to a monitor device 85 for displaying an endoscope image. Have been.

The floor 84 is used to move the endoscope housing device main body 83
The other end of the cable 86 whose one end is connected is exposed and connected to the foot switch body 87. Further, a storage box 88 for storing a foot switch main body 87 when not used is fixed to a lower end of a front portion of the endoscope main body 83.

The foot switch according to the present embodiment is composed of the foot switch main body 87 and a storage box 88 for storing the foot switch when not in use. This foot switch body 87 is, for example, the foot switch 51 of FIG.
It is configured by removing the shock absorbing member 52. That is, the foot switch body 87 may be an existing foot switch.

FIG. 17 shows details of the storage box 88 stored when the foot switch body 87 is not used.
Optical sensors 91 and 92 are attached to the storage box 88 so as to face each other. The optical sensors 91 and 92 are connected to an output control circuit of the electric scalpel device of the endoscope system 82 by a harness (not shown). When the foot switch main body 87 is stored in the storage box 88 and the optical path 93 of the optical sensors 91 and 92 is shut off, the output control circuit of the electrosurgical device does not output even if the pedal of the foot switch main body 87 is depressed. Circuit configuration. Although an optical sensor is used in the present embodiment, the same effect can be obtained with an ultrasonic sensor and a weight sensor.

According to the present embodiment, since no signal is output during storage, even if the pedal is pressed during storage, no signal is output, and there is an effect that a warning output and the trouble of canceling the warning are eliminated. Further, according to the present embodiment, there is an effect that it can be applied to an existing foot switch.

(Eighth Embodiment) Next, an eighth embodiment of the present invention will be described with reference to FIG. FIG.
2 shows a foot switch body according to the embodiment. The purpose of this embodiment is the same as that of the seventh embodiment.

The foot switch body 101 according to the eighth embodiment of the present invention shown in FIG. 18 is connected to an output control circuit of an electric scalpel device (not shown) by a cable 105. The switch 102 is fixed to a surface (a side surface in a normal use state) serving as a bottom surface when the foot switch body 101 is stored in a storage box (not shown). The switch 102 is connected to a board inside the foot switch body 101 by a harness.

The structure of the switch 102 is the same as that of the switch 22 of the first embodiment, but the switch 102 is turned on when not pressed and turned off when pressed.

When one of the switches 102 is pressed, the foot switch body 101 is
The circuit is configured not to output even if I is pressed. Other configurations of the foot switch body 101 include, for example, the foot switch 51 of the third embodiment,
This is the same as the internal configuration from which No. 2 is removed. This embodiment has the same effect as the seventh embodiment.

Note that embodiments and the like constituted by partially combining the above-described embodiments and the like also belong to the present invention. For example, the foot switch 1 of the first embodiment is used as the foot switch body 101 of the eighth embodiment.
A switch provided with a switch 102 may be employed. In this case, the operation and effect of the eighth embodiment are obtained in addition to the operation and effect of the first embodiment. In addition,
Embodiments configured by partially combining the above-described embodiments and the like also belong to the present invention.

[Supplementary Notes] A medical foot switch having a structure in which a built-in switch is turned on / off by depressing a pedal, wherein a means for preventing output from the built-in switch in a state other than a normal use state is provided. 2. 2. The medical foot switch according to claim 1, wherein the means for preventing output by the built-in switch in a state other than the normal use state is performed by detecting a state of being placed on a floor.

3. The medical foot switch according to claim 2, wherein the means for detecting the state of being placed on the floor is performed by a switch provided on a bottom surface of the medical foot switch. 4. 2. The medical foot switch according to claim 1, wherein the means for preventing output from the built-in switch in a state other than the normal use state is performed by detecting that the switch is horizontal.

5. The medical foot switch according to claim 4, wherein the means for detecting the horizontal state is performed by an inclination sensor. (Purpose of Supplementary Notes 1 to 5) It is an object of the present invention to provide a medical foot switch which does not output an operation signal by a switch even when a pedal is moved except in a state where the medical foot switch is normally used, that is, when the pedal is moved on the floor. . (Functions of Supplementary Notes 1 to 5) According to this configuration, when the foot switch is not placed on the floor, the pedal is pressed and the switch is turned on, so that the warning output issued by the apparatus body when the output is not set is troublesome. Is improved.

6. In a medical foot switch having a structure in which a built-in switch is turned on and off by depressing a pedal,
A medical foot switch having means for not outputting even if an impact is applied. 7. 7. The medical foot switch according to claim 6, wherein the means that does not output even when the impact is applied is performed by an impact absorbing member provided on the exterior of the medical foot switch.

8. 7. The medical foot switch according to claim 6, wherein the means that does not output even when the impact is applied is performed by an impact absorbing member provided in a pedal of the medical foot switch. 9. 7. The medical foot switch according to claim 6, wherein the means for not outputting even when the impact is applied is performed by detecting the impact and prohibiting the output for a predetermined time after receiving the impact.

10. The medical foot switch according to claim 9, wherein the means for detecting the impact comprises a shock sensor. (Purposes of Supplementary Notes 6 to 10) It is an object of the present invention to provide a foot switch that does not output even when an impact is applied. (Functions of Supplementary Notes 6 to 10) According to this configuration, when the foot switch is installed on the floor, the switch is turned on by the impact thereof, so that the trouble of canceling the warning output issued by the apparatus main body when the output is not set is improved. You.

11. In an endoscope system having a foot switch having a structure for turning on / off a built-in switch by depressing a pedal and a storage portion thereof, the endoscope system has a means for detecting that the switch is stored, so that output is not performed in a stored state. An endoscope system characterized by the following. 12. 12. The endoscope system according to claim 11, wherein the means for detecting the storage is performed by an optical sensor provided in the storage box.

13. 12. The endoscope system according to claim 11, wherein the means for detecting the storage is performed by a switch provided at a location that becomes a bottom surface of the foot switch at the time of storage. (Purpose of Supplementary Notes 11 to 13) An object of the present invention is to provide an endoscope system provided with a foot switch which detects a stored state and does not output in the stored state. (Operation of Supplementary Notes 11 to 13) According to this configuration, when the foot switch is retracted, the pedal is pressed and the switch is turned on, so that the trouble of canceling the warning output issued by the apparatus main body when the output is not set is improved. Is done.

[0107]

As described above, according to the present invention, in a medical foot switch having a structure in which a built-in switch is turned on / off by depressing a pedal, an output of the built-in switch in a state other than a normal use state is obtained. Since there is a means to prevent it, even if the pedal is pressed outside of normal use,
Since it is not output to the medical device, malfunction can be effectively prevented.

[Brief description of the drawings]

FIG. 1 is a plan view of a (medical) foot switch according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a rear view showing the internal structure of the foot switch.

FIG. 4 is a cross-sectional view taken along the line BB of FIG. 1 in a state away from the floor.

FIG. 5 is an equivalent circuit diagram of a pedal section in the foot switch.

FIG. 6 is a sectional view of a foot switch according to a second embodiment of the present invention.

FIG. 7 is a diagram showing a structure of a tilt sensor.

FIG. 8 is a diagram illustrating the operation of the tilt sensor.

FIG. 9 is a sectional view of a pedal portion of a foot switch according to a third embodiment of the present invention.

FIG. 10 is a sectional view of a switching arm of the foot switch.

FIG. 11 is a sectional view of a pedal portion of a foot switch according to a fourth embodiment of the present invention.

FIG. 12 is a sectional view of a switching arm portion of the foot switch.

FIG. 13 is a diagram illustrating a circuit configuration of a switch board according to a fifth embodiment of the present invention.

FIG. 14 is a diagram illustrating a circuit configuration of a switch board according to a sixth embodiment of the present invention.

FIG. 15 is a sectional view showing a structure near an impact detection switch in the foot switch.

FIG. 16 is a perspective view of an endoscope system including a seventh embodiment of the present invention.

FIG. 17 is a perspective view showing a storage box.

FIG. 18 is a plan view showing a foot switch body according to an eighth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... (Medical) foot switch 2 ... Frame 3A, 3B, 3C ... Pedal 4 ... Partition plate 5 ... Cable 7 ... Pedal cover 7A ... Bellows part 8 ... Screw 9 ... Chassis 11 ... Spring 12 ... Pedal arm 13, 16 ... Shaft 14 ... Connecting member 15 ... Switching arm 17 ... Light shielding plate 18 ... Photo interrupter 19 ... Circuit board 20 ... Spacer 21 ... Bottom cover 22 ... Switch 23 ... Folder 24 ... Plate 25 ... Floor surface 26 ... And circuit 27 ... Relay switch

Claims (1)

[Claims] 1. The built-in switch is turned on by depressing a pedal.
A medical foot switch having a structure for turning off, wherein a means for preventing output from the built-in switch in a state other than a normal use state is provided.