JPH01209062A - Foot switch for ophthalmologic operation - Google Patents

Abstract

PURPOSE:To facilitate an operation and to safely and surely execute an operation by executing the setting of a stepping quantity, the changeover of on/off with the stepping, and the selection of other operational functions by means of one foot switch. CONSTITUTION:A foot switch 40 has a first switch 50, a second switch 60 and a foot rest 70, and by the states of the switches 50 and 60, an object to be controlled is decided. The first switch 50 is operated by a first stage operation to execute the on/off changeover by the stepping and second stage operation to decide a control quantity according to the stepping quantity. The second switch 60 is arranged in the vicinity of the first switch 50 so that the on/off changeover can be executed while the first switch 50 is operated.

Description

[Detailed Description of the Invention] Field of Use on G-beams This invention relates to a foot switch used in ophthalmic surgery.
Ru.

Conventional technology Ophthalmic surgery devices are mainly used to perform vitreous surgery.

Explain a typical example.

In vitrectomy, for example, the cloudy part of the gel-like vitreous body (hereinafter referred to as the aspirated material) located between the crystalline lens of the eyeball and the retina is removed, suctioned, and removed to the outside, and replaced with a clear liquid. This allows light to pass through the crystalline lens and reach the retina, improving vision.

A cutter is used for this removal and suction.

This cutter has a part that is inserted into the eyeball, and the tip of the insertion part cuts off the object while suctioning it. The excised object to be aspirated is removed to the outside.

Furthermore, if the object to be aspirated does not cut properly and gets stuck while cutting with the cutter, the cutter is operated in the opposite direction to prevent the cut.

Notes and decisions 1 This J: Sea urchin cutter operation includes cutter drive, cutter drive and suction drive, suction drive, reverse drive of the saw blade, and adjustment of suction power. It must be possible to switch between actions.

Conventionally, a knot switch is used to switch this cutter. This is because the cutter is held in hand to cover the surgery.
This is because you have to use your feet to switch.

Conventionally, in order to perform such various operations, for example, two
Two foot switches were placed side by side. However, this makes the legs tired, makes it easy to make mistakes, and makes long surgeries difficult. In addition, time costs are incurred when replacing the leg, which affects the surgeon's concentration during surgery.

The object of the present invention is to provide a knot switch for ophthalmic surgery that facilitates switching operations in ophthalmic surgery and enables safe and reliable surgery.

1 bean 11 The invention is summarized in the claims.

'fU- to decide the issue See Figures 2 and 3.

The first switch 50 is composed of a first step operation for switching on/off in each step, and a second step operation for deciding whether or not to control depending on the amount of the step.

The second switch 60 is located near the first switch, which can be turned on and off while operating the first switch 50.

The knot switch 40 of the present invention includes the above-mentioned first switch 50.
The configuration is such that the object to be controlled is determined depending on the state of the second switch 60.

Function: Press to set the maximum setting, switch on/off by pressing the button, and select other operating functions using a single switch (4).
Do it with 0.

1. [Ophthalmic surgery device] The ophthalmic surgery device includes a suction section 1, a cutter drive], a needle 1, a light source unit 3, an irrigation bottle 4, a cutter 5 with a suction function, a lie l-guide 6, an irrigation plug 7, It has a knot switch 40.

The journal cutter 5 has an insertion portion 5a. This insertion portion 5a is inserted into the inside of the eyeball 13 through the sclera 15 of the eyeball 13.

A suction port 30 is provided at the tip of the human part 5a. The cutter 5 cuts the suction object 3 that has entered the suction port 30.
4 can be removed. This excised object to be aspirated 34 can be suctioned into the insertion section 5a and the first passage 8 toward the sutra suction section 1 side.

A compressed air tube 9 is connected to the cutter drive unit 2. Compressed air is sent to the cutter 5 through the tube 9, and the cutter 5 is actuated by the compressed air to cut off the object to be sucked 34.

The light source unit 3 has an optical fiber 1 connected to the light source 1 to the blade 6.
It is now possible to send light through 1. Beyond Light Guide 6! ! It is inserted into the eyeball 13. Soshi-
(The light guide 6 directs light near (=J) of the suction port 30.
It is something that can be done.

Irrigation fluid is stored in irrigation bottles 1 to 4.

This irrigation fluid is adapted to be delivered into the eyeball 13 via irrigation tube 12 and irrigation bluff 7. After the object to be aspirated 34 is excised and suctioned, this irrigation fluid instead fills the inside of the eyeball 13 to restore intraocular pressure.

[Futtle 1 - Switch 40] There is a hook 1 located at the suction part 1 and the cutter drive unit 2.
A switch 40 is electrically connected to the switch 40 .

Please refer to FIGS. 2 and 3.

The knot switch 40 has a rectangular shape when viewed from above. Huh 1
- The switch 40 is a first switch 50 and a second switch 60.
and a footrest 70.

[First switch 50] Please refer to Figures 3 and 4.

The first switch 50 includes a switch 39, a foot plate 41, a side plate 42, a variable resistor 43, a spring 44, and an operating member 45.
, the moving rod 46, the restoring springs 7I7, 48, and the support base 49 are damaged.

The footboard 41 is a square board, and one end is a fulcrum pin 41a.
It is connected to the stationary stand 70 via.

The upper part of the side plate 42 is a slope portion 42a. As shown in FIG. 3, the side portion of the other end of the footboard 41 rests on this slope portion 42a. In this state, the footboard 41 is supported by the restoring spring 47 against the bottom plate 41b. Marj side plate 42
is supported by the outer frame portion 42b via a restoring spring 48.

The support stand/19 in FIG. 3 is fixed to the bottom plate 41b. A moving rod 46 is sandwiched between the slope 49a and the operating member 45. The operating member 45 is supported by a spring 44 with respect to the outer plate 41c. Variable resistor 43
The resistance value changes in accordance with the amount of movement of the moving rod 46.

In the state shown in FIG. 3 (initial state), the footboard 41 and the moving bar 4 are
6 is far away. FIG. 5 shows that part enlarged. When the footboard 41 rotates in the direction of the arrow by this gap d, the variable resistor 43 retains its original value.

By changing the value of the variable resistor 43, the suction capacity of the suction unit 1 shown in FIG. 1 can be adjusted.

The more you press, the greater the suction power.

In FIG. 4, when the side plate 42 moves by a sliding amount S (indicated by a broken line), three switches are turned on. Otherwise, the switch 39 is off.

[Second switch 60] FIG. 6 shows part A of FIG. 2.

The second switch 60 has a restoring spring 61 as shown in FIG.
, a switch 62, and a horizontal push plate 63. Horizontal push plate 63
One end is a portion 63a that can be pressed in the direction of arrow B with a foot. In addition, the other end of the horizontal pushing plate 63 is restored to the fixed base 70.
〇 - Connected by spring 61. A switch 62 is provided inside the footrest 70. When you push the pushing part of the horizontal push plate 63 with your foot in the direction of arrow B, the shaft 64 moves against the restoring spring 61.
Rotate in the direction of arrow C around . When rotated, the switch 62 is turned on. If you release the foot pressure, you will return to the state shown in Figure 6.

FIG. 7 shows the circuit.

A power source 2 is connected to a suction section 1 and a cutter drive unit 1. The cutter drive unit 2 is connected to three switches via a switch 62. The suction section 1 is connected via a variable resistor 43.

[Work] Refer to Table 1 and cover.

The initial state is shown in Figure 3. Both the first switch 50 and the second switch 60 are in an off state.

[First Step Operation] First, the horizontal push plate 63 of the second switch 60 is pressed to turn on the switch 62. When the footboard 41 of the first switch 50 in FIG. 3 is stepped on, the side plate 42 in FIG. 4 moves by a sliding amount S, turning on the three switches. As a result, only the cutter 5 shown in FIG. 1 is driven.

[Second stage operation] Push the horizontal push plate 63 to turn on the switch 62. Tread 4
1 is pushed deeper than the range of the gap d shown in FIG. As the resistance value of the variable resistor 43 changes and the amount of depression increases, the suction capacity of the suction unit 1 shown in Fig. 1 increases linearly.In other words, the cutter drive and suction drive are performed simultaneously.

In the first stage operation shown above, if the switch 62 is turned off without pressing the horizontal push plate 63 of the second switch 60 in Fig. 6, the cutting drive of the cutter 5 in Fig. 1 is reversely activated. . As a result, the object to be aspirated that has become stuck can be temporarily separated from the cutter 5 for the safety of the surgery.

Further, in the second stage operation, when the switch 62 shown in FIG. 6 is turned off, only the suction drive can be performed.

In this way, four functions can be performed with one foot switch. It can be done with a small amount of leg movement.

When the surgery is to be interrupted or terminated, the user can return to the state shown in FIG. 3 by the force of the restoring spring 47 by removing his or her foot from the footboard 41 (or horizontal pusher board 63 if necessary). The side plate 42 also returns to its original position by the force of the restoring spring 48. The horizontal push plate 63 also returns to its original position.

However, the present invention is not limited to the above-described embodiments.

By changing the functional layout of the foot switch, you can create a combination that suits your purpose.

Eight different functions can be provided by adding another third switch similar to the second switch on the opposite side.

It is also possible to turn on and off the switch 39 by directly contacting the footboard without using the side plate 42, and maintain this state electrically with a latch or the like.

Optical switches such as phototubes may be used instead of the three switches.

For the switches 39 and 62, in addition to an electric switch, a fiber or the like may be used, and the light source and light receiving section may be arranged in a part other than the foot switch. A similar function can be obtained by using a linear fiber or the like as the switch 43.

As explained above, the various functions required during ophthalmic surgery can be performed with only one foot switch. This eliminates the hassle of having to replace the left leg with the right leg during surgery. Eliminate erroneous movements, perform surgery safely and reliably, and concentrate on the surgery.

[Brief explanation of the drawing]

Fig. 1 is a diagram of an ophthalmic surgical device equipped with the foot switch of the present invention, Fig. 2 is a plan view showing an embodiment of the foot switch, Fig. 3 is a sectional view of the embodiment, and Fig. 4 is a tread plate and a top view of the foot switch. 5 is an enlarged view of the portion shown in FIG. 3, FIG. 6 is a view of portion A in FIG. 2, and FIG. 7 is a view showing an example of the circuit. 40...Foot switch 50-...First switch 60...Second switch 1 Table 1, 11, 2, 3, 5, 7

Claims (1)

[Scope of Claims] A first switch (50) configured with a first stage operation that performs on/off switching by depressing the pedal, and a second stage operation that determines a control amount according to the amount of depressing; The second switch is placed near the first switch so that it can be turned on and off while operating the switch.
A foot switch for ophthalmic surgery, characterized in that a switch (60) is provided, and an object to be controlled is determined by the states of the first switch (50) and the second switch (60).