JPH119612A - Microscope for medical operation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a part to be examined or an object to be examined from receiving bad influence due to the unnecessary irradiation of light by eliminating the complexity of operating the ON-OFF of an illuminating switch when a doctor being an examining person illuminates and magnify-observes the part to be examined and the object to be examined taken out from the patient at the time of the medical operation of opthalmology and otolaryngology. SOLUTION: A proximity switch 3 ON/OFF-controlling the flickering of the light source of illuminating light transmitted through a light guide 4 corresponding to the approach/separation of an observer is provided at a part of the microscope for medical operation A so as to oppose the observer. Then the light source is turned on or off by the approach of the observer to an eye piece part 2 to illuminate the part to be examined and the light source is turned off by the separation of the user to the part 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surgical microscope provided with means for illuminating a patient's subject to be used during an ophthalmic or otolaryngological operation, and more particularly to an illumination for illuminating a patient's subject. The present invention relates to a surgical microscope capable of rationally controlling lighting of a light source for use.

[0002]

2. Description of the Related Art Conventionally, at the time of an ophthalmological or otolaryngological operation, a surgical microscope provided with an illuminating means for a test portion has been used in order to magnify and observe the test portion to be operated. In this type of microscope, the flickering of the light source of the illuminating means is performed by using a foot switch because the doctor who is the examiner is sterilizing during the operation, or the assistant blinks.

[0003]

Conventionally, when a patient's subject is illuminated with a surgical microscope having illuminating means for enlarged observation, for example, in the case of ophthalmology, the subject does not suffer from glare or the like during lighting. Pleasure was inevitable. On the other hand, as an application of the surgical microscope, when inspecting an object such as an eyeball or a cornea taken out of a patient that has been stored in a cold state by enlarging and observing the object, the surface temperature of the object increases due to the heat of the illumination light. There were problems such as deterioration of the inspection. Therefore, the doctor who is the examiner turns on / off the switch of the light source for illumination during the operation or observation of the test object.
FF had to be performed frequently. Furthermore, if the lighting is continued during the operation or the inspection of the test object, the test subject or the test object is irradiated with unnecessary light, and there is a problem such as power consumption and heat generation from the device.

[0004] The present invention has been made in view of the above circumstances, and a doctor, who is an examiner, has a subject to be examined or a specimen which has been taken out and cooled and stored during ophthalmic or otolaryngological surgery. Lighting switch ON when magnifying observation by illuminating
-Eliminates the complexity of operating OFF, turns on only when necessary, eliminates the adverse effects of unnecessary light irradiation on the test section and test object, and further reduces power consumption and heat generation of the equipment. It is an object of the present invention to provide a surgical microscope capable of suppressing and efficiently illuminating a test part of a patient or the test object and performing a magnified observation.

[0005]

In order to achieve the above-mentioned object, the present invention provides a surgical microscope provided with illumination means for a part to be inspected. A proximity switch controlled by the approach / separation of the observer, that is, a proximity switch that is turned on when the observer approaches and turned off when the observer leaves, is provided so that the observer faces at the time of observation. It is characterized by the following.

Thus, the observer (a doctor who usually performs an operation: an operator) can avoid the troublesome operation of flashing the switch for illuminating the test portion, and the light source is turned on only when necessary for observation. Therefore, the life of the light source lamp can be extended. In addition, the subject and the subject can be illuminated by suppressing the adverse effects without receiving unnecessary light irradiation, and the power consumption and heat generation of the device can be reduced.

Further, the proximity switch is provided at a position close to the eyepiece of the microscope or any other part of the microscope that can detect the approach / separation of the observer when the observer looks into the microscope. However, it is preferable to provide the unit so as to face the viewer.

As the proximity switch, an optical type, that is, a reflection type fiber photoelectric switch which emits detection light to a test object and detects its reflected light can be suitably used because of its small size. A magnetic proximity switch that detects the proximity of the test object by a change, a capacitance proximity switch that detects the proximity of the test object by a change in the capacitance formed between the test object, and others. An ultrasonic proximity switch using the reflection of ultrasonic waves can also be used.

It is advantageous that the turning off of the light source due to the separation of the observer can be adjusted with a delay as the blinking control of the light source of the illuminating means. Accordingly, when the observer repeats approaching / separating at short time intervals for observation, by adjusting and setting the delay time of turning off the light, it is possible to eliminate the troublesome blinking of the light source as the continuous lighting for a necessary time. .

It is very effective to enable or disable the blinking control of the light source of the illuminating means by the proximity switch. That is, by switching to the operation of the blinking control of the light source, the light source of the illuminating means of the microscope is set to the automatic blinking mode, so that the observer does not have to perform the complicated blinking operation of the lighting switch when the observer approaches or leaves the microscope. On the other hand, by switching the blinking control to the inoperative state, the microscope can be used in the following cases in the forced lighting mode. (1) When a video camera is attached to a microscope and observed on a video monitor. (In an ophthalmic operating room, etc.) (2) When using an assistant scope attached to a microscope for multiple observations. (In the ophthalmic surgery room) (3) When observing with the viewfinder of a 35mm camera.
(In an ophthalmic operating room, etc.) (4) When the assistant assists the patient near by the illumination light. (In an ophthalmic operating room) (5) When the optical axis of a surgical microscope is roughly adjusted using illumination light. (6) When the patient changes frequently and the fluctuation of light intensity when the lamp is turned on becomes a problem. (For outpatient otolaryngologists, etc.) (7) When the main lighting is turned off during surgery and observation is performed with auxiliary lighting such as a slit light. As a result, the surgical microscope can be advantageously used with versatility.

Further, when other observation means such as a video camera can be mounted on the microscope image forming section as described above, the blinking control of the light source of the illumination means may be disabled in conjunction with the mounting of the observation means. . Thereby, the switching operation of the blinking control of the light source to the inoperative state can be omitted, and the observation can be efficiently performed by the other attached observation means.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the accompanying drawings in the case of a surgical microscope used in ophthalmology. FIG. 1 is a side view of a main part of the operation microscope according to a preferred embodiment in a use state, and FIG. 2 is a perspective view showing a state where the microscope is supported by a supporting device.

The operating microscope A is attached to a lift holder 5 which is suspended from the tip of an articulated arm 7 (see FIG. 2) attached to a column (not shown) of a stand (floor stand or table stand). The eyeballs of the patient can be observed from a pair of observation objective lenses (not shown) provided at predetermined positions in the lens barrel 1 by freely provided and binocular eyepieces 2 and 2 (see FIG. 2). . The optical system in the lens barrel 1 is a zoom lens type in this embodiment, and the observation magnification and the field of view can be adjusted by the lever 1a. The barrel openings of the lower part from the observation objective lens at a predetermined distance and the objective lens L ₁ having a large diameter so as to cover the inside of the optical system is arranged, the objective for the pair of observation on the inside illumination lens L ₂ having an optical axis substantially parallel to the optical axis and the large diameter optical axis of the objective lens L ₁ position equally dividing between optical axes of the pair of observation objective lens equidistant from the lens arrangement is, the illumination light is introduced through the light guide 4 a bundle of optical fibers from an external light source (not shown), the lens L _3, so that the illumination light beam from the illumination lens L ₂ via the optical path conversion mirror 10 is irradiated to the eyeball of the patient It has become.

[0014] One of the eyepiece second prism box 2 ₁ of the upper surface of the binocular eyepiece 2,2 (prism box 2 ₁ of the upper surface of the right eyepiece in FIG. 2), the proximity switch 3 is the detection unit It is arranged so as to face the operator's face while observing. As the proximity switch 3, a reflection type optical fiber photoelectric switch having a light emitting unit and a light receiving unit in a detection head is used because of its small size and easy mounting. May be provided so as to face the observer.

Thus, when the operator brings his / her face close to the eyepiece unit 2 of the microscope for observing the patient's subject, light emitted from the light emitting unit of the photoelectric switch 3 used as the proximity switch is reflected by the face and received. The blinking of the illumination light source is controlled by an electric circuit, which will be described later, depending on the magnitude of the output when entering the unit. In this case, when the observer's face approaches the eyepiece 2, the illumination light source is turned on, and the illumination light is transmitted from the light guide 4 connected to the lower side of the lens barrel 1 of the microscope to the lens L ₃ , the mirror 10, and the illumination. from the lens L ₂ through a large lens L ₁ is irradiated with the eyeball surface is test region of the patient,
The reflected light makes it possible to observe the spherical surface of the subject to be inspected, and the illumination light source can be turned off by separating the face of the observer from the eyepiece 2.

In this embodiment, the microscope body A
In this case, other observation members such as a video camera and a 35 mm camera can be mounted on the microscope main body A so that the observation can be performed not only from the eyepiece 2 but also from the other. That is, a beam splitter (not shown) is built in the upper part of the lens barrel in the magnifying optical system inside the microscope so as to be able to branch off from the eyepiece optical system, and the video camera or 3
A 5mm camera or the like can be attached via an adapter. FIG. 2 shows a state in which the video camera 8 is mounted on the mount 9 by an adapter 8a which also serves as an optical path conversion. When a 35 mm camera is mounted, the camera is mounted on the mount 9 using an adapter. In addition, a posture operation such as elevating and lowering of the surgical microscope A is performed using a posture operation grip 6 on a side portion of the elevating holder 5 on which the microscope A is mounted.

The blinking control of the illumination light source by the proximity switch 3 attached to the operation microscope is performed by an electric circuit shown in FIG. In FIG. 3, a control circuit (CONT) 12 for controlling an illumination light source 14 includes a power source 1.
3 and the proximity switch 3
Are amplified and input to the amplifier (AMP) 11. The control circuit 12
The switch ON / OFF signal of the switch SW1 (16) for blinking the illumination lamp set on the operation panel 15 is input, and the switch SW2 (17) for automatically controlling the blinking of the illumination lamp 14 is input to the switch SW1 (16). ON-OF of automatic control
The F signal is switched and input, and the OFF signal for turning off the illumination lamp is adjusted so that the delay can be adjusted.
A turn-off delay signal by the DISPLAY adjustment volume 18 can be input.

The switch SW2 for automatically turning on and off the illumination lamp can be manually switched between an automatic ON-OFF control ON and an automatic ON-OFF control OFF. ON-O
It is also possible to switch off the FF control and disable the blinking control of the illumination light source due to the approach / separation of the observer. In this case, the illumination lamp is turned on, and the operator can observe an enlarged image of the patient's subject on a monitor connected to a video camera without turning off the light even when the operator separates from the eyepiece of the microscope.

Next, the procedure for enlarging and observing the patient's subject using the microscope will be described with reference to the flowchart shown in FIG. In this case, prior to the observation, the surgical operation microscope 6 is operated above the eye to be examined by operating the posture operation grip 6 of the elevating holder 5 suspended from the front end of the articulated arm 7 of the stand (not shown) with respect to the face of the patient in the supine state. Bring the observation optical axis of A. And a switch SW for turning on and off the lamp.
Turn 1 ON. By doing so, the preparation posture for lamp lighting by the detection of the proximity switch is set. Next, it is determined whether or not to perform automatic ON-OFF control of lighting of the illumination lamp by the proximity switch. When performing automatic blinking control of the illumination light source in the automatic blinking mode, a switch SW for automatic ON-OFF control is used.
2 is turned on. Subsequently, the OFF-DRAY adjustment volume is operated to set a light-off delay time after the operator leaves, such as 2 to 3 seconds. This can eliminate the hassle of turning off and lighting the illumination due to short separation.

When the above-mentioned switches are set, when the operator who is the observer approaches the eyepiece 2 of the operation microscope A, the proximity switch 3 operates, and the output from the proximity switch 3 increases, and the illumination light source 14 is provided. The lamp lights up. Also, when the operator who is the observer stops observation and separates from the eyepiece unit 2, the output from the proximity switch 3 becomes low, and the OFF signal for turning off the light after the operator separates is set, for example, for 2 to 3 seconds. Working after the delay time,
The lamp goes off. In this way, the lamp is turned on during the observation by the operator, and the lamp is turned off a little after the separation, so that the operator is troublesome when observing the target part while repeatedly approaching and separating from the eyepiece. This makes it possible to automatically and efficiently turn on and off the light source for illumination. In this way, the observation by the operator is completed, but when the observation is completed, SW1 is turned off.
To turn off the lamp. When the observation is not completed, the next observation is performed as it is based on the presence or absence of the switch setting change, and when the switch setting is not changed, the switch setting change, that is, the automatic ON-OFF control is determined, and ONN / OFF is determined. In the case of selecting, or in the case of performing readjustment of OFF-DRAY when ON, the above operation is repeated from the beginning.

On the other hand, when the automatic blinking control of the illumination light source is not performed, for example, when the operator attaches a video camera to the microscope image forming section and observes the image on the video monitor instead of observing with the microscope eyepiece, Since the patient's subject needs to be illuminated irrespective of the operator's approach / separation from the eye, automatic ON-O is set as the forced lighting mode.
The switch SW2 for FF control is turned off. This SW
The switch 2 may be turned off manually or, when a video camera is mounted, the SW2 may be turned off in conjunction with the video camera mounting. Thereby, the lamp of the illumination light source 14 is turned on by a signal from the control circuit (CONT) 12, and when the observation is completed, the SW1 is turned off to turn off the lamp.
Note that the automatic ON-OFF control is deactivated by turning off the SW2 and the forced lighting mode is set, as described above, in addition to observation with a video monitor, observation with an assistant scope, observation with a 35 mm camera viewfinder, and the like. It can be used as appropriate.

As described above, the operation of the proximity switch attached to the operation microscope can be switched between operation and non-operation, so that the observer can observe the object to be inspected from the microscope eyepiece during operation. The value of the use of a surgical microscope, such as avoiding the complexity of the blinking operation of the switch of the head illumination light source, and enabling the switch to be inoperative when it is switched off, can be observed with other observation means such as a video monitor other than the eyepiece. It greatly contributes to the improvement of

[0023]

According to the operation microscope of the first aspect of the present invention, a proximity switch for controlling the blinking of the light source of the illuminating means of the patient's part to be examined by controlling the approach / separation of the observer is observed in a part of the microscope. Since it is provided so as to face the observer, the operator who is the observer can avoid the trouble of the blinking operation of the switch for illuminating the part to be inspected, and the lamp of the light source can be turned on only when necessary for observation. Life can be extended. In addition, the patient who is the subject and the test object taken out of the patient are not irradiated with unnecessary light, and can efficiently illuminate the test portion of the subject, thereby reducing the power consumption of the device and the power consumption of the device. Heat generation of the device can be reduced.

According to the second aspect of the present invention, the blinking control of the light source of the illuminating means of the object to be inspected can be delayed by adjusting the turning off of the light source due to the separation of the observer. In the case of repeating approach / separation, the delay time of turning off the light is adjusted and set, so that it is possible to eliminate the complication caused by the blinking of the light blinking as the continuous lighting when necessary.

According to the third aspect of the present invention, the blinking control of the light source of the illuminating means by the proximity switch can be switched between operation and non-operation. When the observer approaches or moves away from the microscope, the observer can avoid the trouble of the blinking operation of the illumination switch, and by switching the blinking control to the inoperative state, the microscope is set to the forced lighting mode, and the ophthalmologic operation room is turned on. When a video camera is attached to a microscope and observed with a video monitor, the assistant scope is attached to a microscope, observed with a 35 mm camera, or a patient is frequently changed in otolaryngology outpatients, etc. It can be used advantageously with versatility when the light quantity fluctuation at the time becomes a problem.

According to the fourth aspect of the present invention, it is possible to mount another observation means such as a video camera on the microscope image forming portion, and to control the blinking of the light source of the illumination means in conjunction with the mounting of the observation means. By disabling, the operation of switching the blinking control of the light source to the inoperative state can be omitted, and the observation can be efficiently performed by another observation unit.

[Brief description of the drawings]

FIG. 1 is a side view of a main part in a use state of an operation microscope according to an embodiment of the present invention.

FIG. 2 is a perspective view of a surgical microscope showing a video camera mounted state.

FIG. 3 is a block diagram of an electric circuit for controlling flickering of a light source of a lighting unit.

FIG. 4 is a flowchart illustrating a procedure of observation of a test portion.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Barrel of surgical microscope, 2 ... Eyepiece part, 3 ... Proximity switch, 4 ... Light guide, 5 ... Lifting holder, 8
... Video camera, 9 ... Mounting mount for other observation means, 14 ... Illumination light source (illumination lamp), 16 ... Illumination lamp blinking switch SW1, 17 ... Illumination lamp automatic blinking control switch SW2, 18 ... OFF-DRAY
Adjuster, A ... surgical microscope, L ₂ ... illumination lens.

Claims (4)

[Claims] In a surgical microscope provided with illumination means for a part to be inspected, a proximity switch for controlling blinking of a light source of the illumination means by approach / separation of the observer is provided on a part of the microscope. An operating microscope characterized by being provided as such. 2. The operating microscope according to claim 1, wherein the blinking control of the light source of the illuminating means enables delay adjustment of turning off the light source due to separation of the observer. 3. The operating microscope according to claim 1, wherein the blinking control of the light source of the illuminating means by the proximity switch can be switched between operation and non-operation. 4. A method according to claim 1, wherein another observation means such as a video camera can be mounted on the microscope image-forming portion, and the blinking control of the light source of the illumination means is disabled in conjunction with the mounting of the observation means. The surgical microscope according to claim 3, wherein