JPH01270844A - Ophthalmologic machine - Google Patents

Abstract

PURPOSE:To securely prevent unnecessary contact to an unanesthetized eye due to the miss of operation in advance by coupling a signal from a checked eye input means, which input the right and left discrimination of a checked eye, and a signal from a right and left eye identifying switch and discriminating whether closed contact to the checked eye of a close contacting part is allowed or prohibited. CONSTITUTION:A checking person pushes an input switch 20 for right eye, for example, after the right eye to be eye-dropanesthetized in a side to be measured is confirmed. Continuously, an operating rod 4 and a dial 5 are operated and a probe 16 is correctly faced to the eye in the side to be measured. Then, a measuring switch 6 is pushed and the start of the measurement is commanded. At such a time, when the signal in the side of the input switch 20 for right eye and the signal of a right and left eye identifying switch 23 by a cam 22 are correctly coupled, a signal is sent to a motor control part 29 by a contact propriety discriminating control part 28 and a motor 9 is revolved. Then, the probe 16 is closed to a checked eye E side through a movable stand 8. At such a time, when a command to the input switch 20 for right eye is not executed or the coupling is unsuitable, since the driving command to the motor 9 is not outputted even in case that the command of the measurement start is given from a measuring switch 6, the probe 16 can be prevented from moving to the checked eye E side.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention is directed to an ultrasonic axial long needle, an applanation type tonometer, etc., in which a close contact part such as a measurement terminal is brought into close contact with the eye to be examined. This relates to an ophthalmological machine designed to perform medical treatment.

[Prior Art] For example, when performing medical treatment by bringing a measurement terminal, etc., such as an ultrasonic ophthalmic long needle, into contact with the eye to be examined, an ophthalmic anesthetic is applied to the cornea, which is sensitive to pain, in advance, and then the measurement terminal is placed in contact with the eye. However, in some cases, the patient may accidentally come into contact with the eye to which the instillation was not applied, causing severe pain to the patient and causing great anxiety and discomfort during subsequent medical treatment. be.

[Purpose of the Invention] The purpose of the present invention is to prevent unnecessary contact with non-anesthetized eyes due to carelessness as described above, and to improve safety so that both the examiner and the patient can perform medical treatment with peace of mind. Our goal is to provide high-quality ophthalmological equipment.

[Summary of the Invention] The gist of the present invention to achieve the above-mentioned object is to provide a close contact section that is mounted on a sliding table and functions by coming into close contact with the eye to be examined, and a system that separates the left and right eyes of the eye to be measured. A test eye input means for inputting an input; a left and right eye detection means for detecting which eye of the test eye is facing the approach contact portion; The sleep medicine machine is characterized in that it is equipped with a close contact regulating means for regulating close contact of the contact portion to the subject's eye.

[Embodiments of the invention] The present invention will be explained in detail based on illustrated embodiments.

FIG. 1 shows an embodiment in which the invention is applied to an ultrasonic ophthalmic needle. Reference numeral 1 denotes a base, and a sliding base 3 on which a device body 2 is mounted is mounted on the base 1 relative to the base l. It is placed so that it can slide within a certain range, and its sliding in the front-rear and left-right directions is performed by tilting the operating ring 4. Furthermore, the device main body 2 can be moved up and down within a certain range by rotating a dial 5 provided at the base of the operating ring 4.
A measurement switch 6 is protruded from the upper end. A movable base 8 that moves back and forth along a guide shaft 7 is provided inside the device main body z, and this movable base 8 is moved by a pulley 1 by rotation of an electric motor 9.
0, Bell) 11. It is movable back and forth within a certain range via pulleys 12a and 12b. The movable base 8 is provided with a slide shaft 14 that guides the probe base 13.
The probe stand 13 fitted on this slide shaft 14 is
Tested 11 by spring 15! It is biased towards the E side. Further, a probe 16 that contacts the eye E to be examined is attached to the tip of the probe stand 13, and a cable 17 is connected to the probe 16. The probe 16 has a built-in vibrator such as a pressure transducer that emits ultrasonic waves for measuring the axial length and detects reflected waves from the main part of the eye E to be examined. On the pillar 18 established on the base l,
A face holder 19 that can move up and down within a certain range is attached, and the subject P places his or her face on this face holder 19 and undergoes the examination. On the front surface of the base 1, as shown in FIG. 2, a right eye input switch 20 and a left eye input switch 21 are provided as test eye input means for inputting the left and right sides of the test eye E to be measured. ing. These input switches 2
0.21 is 1 so that it can be clearly recognized that it has been input
For example, a self-illuminated push button switch is desirable.

FIG. 3 shows left and right eye detection means for detecting whether the eye E to be examined, which the probe 16 faces, is the left or right eye. This left and right eye detection means is incorporated between the base 1 and the sliding table 3, and the sliding table 3 is provided with a cam 22 that switches at approximately the center in the left-right direction of the eye E to be examined. A left/right eye identification switch 23 exclusively for microswitches is attached to the base l, which is opened/closed by the cam 22, and by turning on/off the left/right eye identification switch 23,
It is possible to detect whether the probe 16 is facing the left eye side or the right eye side of the eye E to be examined.

FIG. 4 shows a control system diagram, in which the output of the probe 16 is connected to the axial length measuring section 24 via a cable 17.

The axial length measuring section 24 is provided with a printer 25, a printer switch 261, and a display 27. Inside this axial length measuring section 24.

A drive circuit for a vibrator that emits ultrasonic waves for measuring the axial length, a processing calculation circuit that measures the axial length from the arrival time difference of the reflected waves from the main part of the eye E detected by the vibrator, Input initialization means for clearing the input results of the right-eye input switch 20 or the left-eye input switch 21 is built-in. The output of the axial length measurement section 24 is connected to a contactability determination control section z8 and a motor control section 29, and the contactability determination control section 28 includes a right eye input switch 20, a left eye input switch 21. The output of the left/right eye discrimination switch 23 is connected, the output of the contactability determination control section 28 is connected to the motor control section 29, and the output of the motor control section 29 is further connected to the electric motor 9. Further, the output of the measurement switch 6 is connected to the motor control section 29 .

Next, to explain the operation of the unimplemented example, the examiner confirms the eye on the side to be measured in which the eye drops have been anesthetized as specified in the medical record, and then presses the right dosing input switch 20 or the left eye input switch 20. Next, operate the operation ring 4 and dial 5 to properly face the probe 16 to the eye on the side to be measured, and press the measurement switch 206 to command the start of measurement. At this time, if the signal from the pressed side of the input switch 20 for the right eye or the input switch 21 for the left eye and the signal from the left/right eye discrimination switch 23 by the cam 22 are correctly combined, the contact possibility determination control section 28 is the motor control section 29
By sending a signal to rotate the electric motor 9, the probe 16 can be brought closer to the eye E side via the movable table 8.

Then, when the probe 16 contacts the eye E to be examined and a reflected signal is obtained, the axial length measuring section 24 displays the axial length based on the calculation result on the display 27.

If necessary, press the print switch 26 to print the measurement results on print paper using the printer 25.0 The measurement results are displayed on the display 27, or when the print switch 26 is pressed, the motor control unit A motor reversal signal is sent to the motor 29, and the motor 9 reverses to move the probe 16 back to its original position.On the other hand, the contact possibility determination control unit 28 is sent a right eye user switch 20 or a left eye input switch 21. A clear signal is given to cancel the input from the input, and the input result is erased.

During the above operation, if a command is not given to the right eye input switch 20 or left eye input switch 21, or if the command is given incorrectly and the combination with the signal from the left and right eye discrimination switch 23 is inappropriate. Or, even if the command to the right eye user 20 or cam 22 is valid, if the probe 16 is opposed for reflection and the signals from the left and right eye discrimination switch 23 are reversed. , the contactability determination control unit 28 does not send a signal to the motor control unit 29. Therefore, even if there is a command to start measurement from the measurement switch 6, a drive command to the motor 9 is not output. It is possible to prevent the probe 16 from moving toward the eye E side.

Note that without directly attaching the probe 16 to the movable base 8, the probe base 13, slide shaft 14, spring 15
The reason why the probe 16 is indirectly attached via the spring 15 is to direct the probe 16 toward the eye E side with a weak constant pressure without directly transmitting the rotational force of the electric motor 9 as a pressing force to the eye E. This is to reduce deformation of the eye E by pressing the eye E.

In the above-described embodiment, the examiner cannot perform contact measurement unless he or she operates the right eye input switch 20 or the left eye input switch 21, so the examiner is cautioned to reconfirm the subject's eye E during this operation. Furthermore, if the right eye input switch 20 or the left eye input switch 21 is operated correctly, contact with the eye E on the wrong side can be prevented.

Furthermore, in the above embodiments, the electric 4I!
Although the case where the rotation signal is generated by the rotation signal No. 9 has been described, it goes without saying that other means may be used. for example,
A method such as using a solenoid to retract the bin that restricts the leftward movement of the movable platform 8 shown in FIG. It is also possible to stop the current supply to the motor 9 after a certain period of time due to an excessive current in the motor 9 which causes the motor to slip or its rotation is locked.

The above-mentioned embodiment is a case in which the present invention is applied to an ultrasonic axial length meter, but it is also possible to apply the present invention to an ultrasonic axial length meter. The present invention can also be applied to tonometers, specular microscopes, and the like. In addition, in order to make it easier to confirm the command input to the right-eye input switch 20 or the left-eye input switch 21, it is necessary not only to turn on the self-illuminated switch but also to use other clearer displays, such as a TV monitor. Display on a monitor is also possible in devices that have this.

[Effects of the Invention] As explained above, the ophthalmic machine according to the present invention combines the signal from the eye input means for inputting the left and right eyes of the eye to be measured and the signal from the left/right eye identification switch. This has the effect of being able to reliably prevent unnecessary contact with the non-anesthetized eye due to operational errors, since it is determined whether close contact of the close contact part to the subject's eye is permitted or prohibited. Both the examiner and the patient can perform medical treatment with peace of mind.

[Brief explanation of the drawing]

The drawings show an embodiment of the ophthalmological machine according to the present invention, and FIG. 1 is a configuration diagram in which the present invention is applied to an ultrasonic ophthalmic needle, FIG. 2 is a front view of a part of the base, and FIG. FIG. 4 is a sectional view of the left and right eye discrimination switch, and is a control system diagram. 1 is a base, 2 is a device body, 3 is a sliding table, 8 is a movable table, 9 is a motor, 13 is a probe stand, 16 is a probe, 2
0 is the input switch for the right eye, 21 is the input switch for the left eye,
23 is a left and right eye identification switch 2, 24 is an axial length measurement unit, 2
Reference numeral 8 represents a contact permission determination control section, and reference numeral 29 represents a motor control section. Patent applicant Canon Co., Ltd. Figure 1 Figure 82

Claims (1)

[Claims] 1. A close contact unit mounted on a sliding table and functioning by coming into close contact with the eye to be examined; an eye input means for inputting the left and right eyes of the eye to be measured; left and right eye detection means for detecting whether the eye is facing the close contact portion; and close contact regulation means for restricting close contact of the close contact portion to the eye to be examined based on signals from the eye input means and the left and right eye detection means. An ophthalmological machine characterized by being equipped with.