JP2003148998A - Volume mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a volume mechanism which does not require to install a translucent window on a housing and therefor does not causes a malfunction due to some amount of contamination, and which can be cleaned highly. SOLUTION: This volume mechanism is installed on the water-impermeable armor of a medical apparatus. The volume mechanism is provided with an operation knob 2 attachable to and detachable from the armor of the medical apparatus, a rotary magnet 3 mounted on a part displacing with respect to the armor in operating the operation knob 2, a magnetic sensor 8 installed inside the armor for sensing magnetic lines of force generated from the rotary magnet 3, and an output means (a rotation direction detection circuit 9 and a counter 10) for outputting a signal according to the position or the displacement of the rotary magnet 3 based on a magnetic force detection signal sensed by the magnetic sensor 8.

Description

Description: BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention
Related to a volume mechanism provided in the system. [0002] Conventionally, in medical equipment, a continuous amount of
Some items needed to be adjusted. For example, endoscope checkup
Light intensity, color tone of electronic endoscope, output current value of high-frequency ablation device
And insufflation pressure of an insufflation device correspond to this. However, in order to adjust such an amount,
Adopts the volume adjustment mechanism commonly used for
Then, for example, the cleaning and cleaning properties of the medical device itself,
Could cause problems with disinfection and water tightness. Immediately
The knobs that make up the volume adjustment mechanism and the external surface of the medical device
The surface may be clogged with dirt, or such dirt may be removed.
It could be difficult to leave. [0004] Therefore, disinfection and watertightness as described above are required.
In order to solve the problem related to the performance,
Examples such as 1-223197 are disclosed. this
In the example, the displacement of the knob is set in the medical device housing.
Optically detected through the light-transmitting window by the selected optical sensor
And adjust the volume. [0005] However, the above-mentioned problems
In the example disclosed in Japanese Patent Application Laid-Open No.
For example, liquid or bodily fluid is immersed between the knob and the light-transmitting window.
If the light transmissive window enters and becomes dirty, the medical device itself may malfunction or operate incorrectly.
May cause inoperability. Also, configure the translucent window.
Member is formed separately from the housing, so that the light-transmitting window
If it must be joined to the housing in a watertight manner by watertight bonding, etc.
In addition, there is a problem that it takes time and effort in manufacturing. [0006] The present invention focuses on the above problems.
The purpose of the medical device
In the volume mechanism of
Good, so that it does not cause any malfunction even with slight contamination, and
Another object of the present invention is to provide a volume mechanism with high cleaning performance. [0007] In order to achieve the above object,
First, the first invention is provided on a water-impermeable exterior of a medical device.
In the volume mechanism, the outside of the medical device
Operation knob detachable from the device, and operation of the operation knob
A magnetic part provided in a part that is sometimes displaced with respect to the exterior
Material, to detect a magnetic line of force emitted from the magnetic member,
A magnetic force detecting means provided inside the exterior, and the magnetic force
Based on the magnetic force detection signal detected by the detection means,
Output means for outputting a signal corresponding to the position or displacement of the member
And DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) FIG.
The first embodiment of the present invention will be described in detail with reference to FIG.
You. (Structure) FIG. 1 shows a first embodiment of the present invention.
FIG. 2 is an external perspective view of the medical device. Medical device housing 1
Operation knob 2 for volume adjustment on front panel exterior
Is provided. In FIG. 1, the operation knob
Is one, but of course, two or more may be provided. [0010] The medical equipment mentioned here is, for example, an electronic endoscope.
Processor devices in mirror and endoscope imaging devices,
Light source device for endoscope, or high-frequency ablation power supply device, medical use
Laser output device, insufflation device, etc.
The amount that can be adjusted by 2 is, for example, an electronic endoscope imaging element.
Electronic shutter speed, output image color tone, and endoscope illumination
Diagnostic light amount, high frequency output current value, laser output value, insufflation pressure
What is it? FIGS. 2A and 2B show the present embodiment.
FIG. 4 is a diagram showing details of a volume adjustment structure. FIG.
In (A), the operation knob 2 has a rotation axis 5 as a center axis.
Rotating operation is possible, and the surface on the housing 1 side is
A circular recess 4 is provided. The entire circumference of the recess 4
A groove 6 is provided. Surrounding the recess 4
Rotary magnet 3 is built into knob 2
I have. On the other hand, the outer surface of the housing 1 is fitted into the recess 4.
A convex part 7 having a circular shape is provided. Of the projection 7
On the entire circumference, protrusions made of elastic material such as rubber
A member 18 is provided integrally. Also, of the protrusions 7
In the section, for example, a magnetic cell constituted by a Hall IC or the like is used.
The magnetic sensor 8 is provided with a medical device.
It is electrically connected to the inside of the casing 1. FIG. 2 (B)
Has the concave portion 4 of the operation knob 2 fitted to the convex portion 7 of the housing 1.
It is a figure showing a state. The housing 1 is naturally formed to be watertight.
No. In addition, the other portions in the vicinity of the convex portion 7 can be seamlessly formed.
It may be formed. FIG. 3 shows the rotary in the present embodiment.
-The positional relationship between the magnet 3 and the magnetic sensors 8, 8 '
It is a figure which shows typically. Multiple rotary magnets 3
The magnetic sensor, comprising a north pole and a south pole
8, 8 'are located inside the rotary magnet 3
Are provided as shown in FIG. And these two magnetic cells
Sensors 8 and 8 'are N poles in the rotary magnet 3.
The angle θ, which is an odd multiple of 1/2 of the angular pitch between
It is arranged. FIG. 4 shows the magnetic field in the medical device housing 1.
One of the circuit configurations for processing the outputs of the sensors 8, 8 '
FIG. 4 is a block diagram showing an example, and is a illuminating light of an endoscope light source device
Fig. 3 shows a configuration in the case of use for volume adjustment. Of course
However, it may be used for adjusting other medical devices. Two are provided
The outputs of the magnetic sensors 8, 8 'are used as output means.
Input to the rotation direction detection circuit 9 and the counter 10
The output of the rotation direction detection circuit 9 is
The data is input to the counter 10. Soshi
The output of the counter 10 is determined by the memory 11 and the light amount value.
Input to the circuit 12. Also, the output of the memory 11 is
The light amount value is inputted to the light amount determination circuit 12.
You. The output of the light amount determination circuit 12 is used to drive the aperture.
The aperture driving circuit 13 is inputted to a light source device.
The aperture 14 is connected to a stop 14 for reducing the amount of light. Here, the counter 10 has the two
Of the magnetic sensors 8, 8 ', only one output is input
Connection. (Operation) According to the above configuration, medical treatment
Align the concave portion 4 of the operation knob 2 with the convex portion 7 of the device housing 1 and push
The protrusion member 18 is engaged with the groove 6 by inserting
Operation knob 2 centered on rotation axis 5 on outer surface of medical device housing 1
It can be installed so that it can be freely rotated as a shaft
I can do it. An operation knob is provided on the outer surface of the medical device housing 1.
Pull the operation knob 2 with the 2 attached
As a result, the protrusion member 18 is deformed and comes off the groove 6,
The operation knob 2 can be removed from the medical device housing 1
You. Therefore, the operation knob 2 is moved with respect to the outer surface of the medical device housing 1.
It is configured to be detachable and rotatable. Here, the operation knob 2 is positioned outside the medical device housing 1.
Rotate the operation knob 2 in a state of being mounted on the surface.
Then, the magnetism detected by the magnetic sensor 8 is shown in FIG.
It changes as you did. Here, FIG.
5 shows detection contents of the magnetic sensor 8 in FIG.
FIG. 5 shows the magnetic sensor shown in FIGS.
The detection contents of the server 8 'are shown. Here the operation knob
2 is clockwise (CW), the magnetic cell
The detection content of the sensor 8 is as shown in FIG.
The operation direction of the operation knob 2 is counterclockwise (CCW)
Then, the detection content of the magnetic sensor 8 is shown in FIG.
It will be. Of the magnetism detected by the magnetic sensor 8,
The rotation direction is output from the magnetic sensor 8 and the rotation direction is detected.
The signal is input to the circuit 9 and the counter 10. Here before
The rotation direction detection circuit 9 is a magnetic detection pattern shown in FIG.
Rotation of the operation knob 2 based on the arrow (A) or (B).
The operation direction is clockwise (CW) or counterclockwise (CC
W) and outputs it to the counter 10
You. The counter 10 detects whether the magnetic sensor 8 detects
Count how many times the volume changes from N pole to S pole, for example
You. The counter 10 includes the rotation direction detection circuit.
If the input from 9 is clockwise (CW), the previous
When the count is added and it is counterclockwise (CCW)
Subtracts the count. The count amount of the counter 10 is
The data is output to the memory 11 and the light amount determination circuit 12.
The memory 11 stores the count amount.
The counted amount is output to the light amount determination circuit 12.
Note that the count amount stored in the memory 11 is the medical device itself.
May be configured to be maintained even when the power is turned off.
No. The light amount determination circuit 12 is provided with the counter 1
0 and the contents of the count amount input from the memory 11
Based on the above, the illuminating light value of the endoscope light source device is determined. This
At the time, the count amount output from the counter 10 and the
Difference between the count value output from the memory 11
In some cases, the count output from the memory 11
Quantities take precedence. The determined light intensity value is the light
The output from the quantity value determination circuit 12 is sent to the aperture drive circuit 13.
Is entered. The aperture driving circuit 13 is used for determining the light amount value.
The aperture 14 is determined based on the amount of light for illuminating inputted from the road 12.
To adjust the amount of illuminating light emitted from the light source device.
You. (Effect) Configuration and operation as described above
The medical device housing 1 is contaminated with liquid or body fluid
In this case, the operation knob 2 must be removed from the housing 1.
Easily cleans and cleans the operation knob 2 and the outer surface of the housing 1
It can be wiped and disinfected. Also, set the operation knob 2
Adjustment by the operation knob 2 by removing from the housing 1
It is also possible to lock the value and fix it in an unadjustable state.
Memory 1 after the operation knob 2 is removed.
No problem because the volume adjustment amount is maintained by 1.
It is possible to use medical equipment,
If you attach 2, you can adjust the volume again
Noh. The memory 11 is used when the power of the medical device itself is turned off.
Even if it is configured to maintain the volume adjustment amount even if
Good, when turning off the power of the medical device or removing the operation knob
Configured to reset the volume adjustment amount to the initial value
You may. Also, the fact that no optical structure is adopted
When the operation knob 2 and the housing 1 are slightly contaminated,
, The volume can be adjusted. (Second Embodiment) Hereinafter, a second embodiment of the present invention will be described.
An embodiment will be described with reference to FIGS. As shown in FIG. 6, the protrusion 7 is provided on the operation knob 2 side.
And a concave portion 4 is provided on the outer surface of the housing 1. Of operation knob 2
A magnet 17 is built in the protrusion 7 at a position away from the rotation shaft 5.
Have been. A groove 6 is provided on the outer periphery of the convex portion 7.
ing. On the other hand, the concave portion 4 on the outer surface of the housing 1 has an inner peripheral surface.
A projection member 18 is provided on the
An electric board 16 is provided around the section 4. The electric base
Magnetic sensor consisting of three or more Hall elements on plate 16
-15 is provided. FIG. 7 shows the magnet 17 and the magnet in this embodiment.
FIG. 3 is a diagram schematically illustrating a positional relationship of an air sensor. Magnetic
Stone 17 has either north or south pole facing outward
The magnetic sensor 15 is close to the magnet 17.
Center around the rotation axis 5 so that you can detect
Are distributed. FIG. 8 shows a magnetic sensor in the medical device housing 1.
1 shows an example of a circuit configuration for processing the output of a circuit 15
It is a block diagram and the light for endoscopes is similar to 2nd Embodiment.
Shows the configuration when used to adjust the amount of
You. Each magnetic sensor 15 has a magnet 17 near it.
Information as to whether or not it is output to the angular position detection circuit 19. The
The angular position detection circuit 19 detects the magnet 17 based on the input information.
The rotation angle position of the memory 11 and the memory 11
Output to the road 12. Then, the light amount determination circuit 12
The output is input to the aperture driving circuit 13 and the aperture driving circuit
Reference numeral 13 is connected to an aperture 14 for reducing the light amount of the light source device.
You. The magnetic sensor 15 is a hole.
It is also possible to use electromagnetic induction by coils instead of elements
Alternatively, a magnetic diode or the like may be used. (Operation) In this embodiment, the first embodiment
Operation knob 2 can be arbitrarily attached to and detached from housing 1 as in the embodiment.
And can rotate. The angular position detection circuit 1
9, the angular position and displacement of the magnet 17 are stored in the memory 1
1 and the light amount determination circuit 12. The note
The memory 11 stores the angular position and the amount of displacement.
The angular position and the displacement amount are output to the light amount value determination circuit 12.
Power. The angular position and displacement stored in the memory 11
The volume is maintained even when the medical device itself is turned off
You may comprise. The light amount determination circuit 12 detects the angular position.
Output circuit 19 and the angular position input from the memory 11
Based on the amount of light and the amount of displacement
Determine the value. At this time, from the angular position detection circuit 19,
The output angular position and displacement amount and the output from the memory 11
When there is a difference between the applied angular position and displacement
Is the angular position and displacement output from the memory 11
Takes precedence. The determined light intensity value is the light intensity
Output from the value determination circuit 12 and input to the aperture drive circuit 13
Is done. The aperture driving circuit 13 is used for determining the light amount value.
The aperture 14 is determined based on the amount of light for illuminating inputted from the road 12.
To adjust the amount of illuminating light emitted from the light source device.
You. (Effect) The effect of this embodiment is as follows.
Built-in operation knob 2 in addition to the effects already shown in the embodiment
Rotating magnet as in the first embodiment
Since it is possible to use a simple magnet 17 instead of 3,
Operation knob 2 can be configured at a lower cost than in the first embodiment.
It is. Therefore, as if the operation knob 2 was accidentally lost.
Even in the case, arrange the operation knob 2 as a replacement part at low cost
Is possible. Further, as schematically shown in FIG.
An MR element 24 is used instead of the electric substrate 16 in the embodiment.
It may be provided. In this case, the magnet built into the operation knob 2
Is a rotary magnet 25. Generally like this
Rotation angle position of rotary magnet 25
Can be detected as the resistance value of the MR element 24.
Therefore, the MR element 24 is moved to the angular position in the second embodiment.
By connecting to the detection circuit 19, the same as in the first embodiment
Function and effect can be obtained. (Third Embodiment) Hereinafter, a third embodiment of the present invention will be described.
An embodiment will be described in detail with reference to FIG. As shown in FIG.
As shown in FIG.
A magnet 21 is built therein. The magnet 21 is inside the housing 1
And a potentiometer or encoder
Connected to the printer 23. Operation knob 2
As shown in FIG. 10, an elastic member forming the projection member 18
Accordingly, the projection member 18 may be formed integrally with the projection member 18. (Operation) With the above configuration, the operation
When the knob 2 is turned, the metal piece 20 is turned and the magnetic force is
As a result, the magnet 21 rotates, and thus the rotational position of the magnet 21
And potentiometer or encoder 2
3 can be detected. The potentiometer
Alternatively, the output value of the encoder 23 is used in the second embodiment.
Input to the angular position detection circuit 19,
The operation is equivalent to that of the embodiment. (Effect) With the above configuration and operation,
Thus, the same effect as in the second embodiment can be obtained. still,
In this case, what is built into the operation knob 2 is a magnet 17.
Instead of the metal piece 20, which is more than in the second embodiment.
An inexpensive operation knob 2 can be configured. (Fourth Embodiment) Hereinafter, a fourth embodiment of the present invention will be described.
An embodiment will be described with reference to FIGS. FIG.
As shown in FIG.
The push button switch 28 is formed integrally and watertightly,
The magnet 26 is built in the button switch 28. The push
By pressing the button switch 28, the magnet 26 rotates
5 is moved in the direction of the arrow in FIG. On the other hand, a hole is provided on the rotating shaft 5 in the housing 1.
A magnetic sensor 27 such as an element is provided.
The magnetism is detected and output when the magnet 26 moves to the vicinity.
It has become so. (Operation) With the above configuration, the second
In addition to the operation shown in the embodiment, the push button switch 28
Pressing causes the magnet 26 to move in parallel,
By detecting and outputting with the sensor 27,
The switch function to the volume adjustment mechanism
I can do it. (Effect) The volume adjusting mechanism is
By configuring, for example, in an electronic endoscope device
A menu operation as shown in FIG. That is,
Superimposed on the observation image 29 on the monitor by the electronic endoscope device
To display the menu display 38 and rotate the operation knob 2
The cursor 40 is moved up and down on the screen by operating
Menu selection operation, the push button switch 28
The menu can be determined by pressing. (Fifth Embodiment) Hereinafter, a fifth embodiment of the present invention will be described.
An embodiment will be described with reference to FIG. (Structure, Function and Effect) FIG.
(B) shows how to attach the operation knob 2 to the housing 1.
Thus, an example different from the above embodiments will be described. FIG. 13A shows a housing according to the second embodiment.
The protrusion of the operation knob 2 is inserted into the groove 30 provided on the inner periphery of the
The projection 31 provided on the outer periphery of the 7 is fitted and locked. Ma
In addition, a button 32 is provided on the outer periphery of the operation knob 2,
By pressing the button 32, the projection 31 is set in the projection 7.
Will be delivered. The button 32 and the projection 31 are
It may be formed integrally and elastically, or
To provide a mechanism in the operation knob 2
Is also good. According to the above configuration,
When the operation knob 2 is attached to the housing 1
The reliability is increased and the operation knob 2 is accidentally inadvertently
It is less likely to fall out of place. FIG. 13B shows a projection in the second embodiment.
A groove 39 is provided on the outer periphery of the portion 7, and an O-ring is fitted into the groove 39.
33 are provided. On the other hand, the O-ring 33 also
A fitting groove 30 is provided. According to the above configuration, the O-ring 33
As a result, the housing of the operation knob 2 is similar to that of the previous embodiment.
1 and the O-ring 33
It can be removed from the operation knob 2 and the housing 1
Therefore, the cleaning and wiping properties of the operation knob 2 and the housing 1 are improved.
I do. (Sixth Embodiment) Hereinafter, a sixth embodiment of the present invention will be described.
An embodiment will be described with reference to FIG. (Structure) In the sixth embodiment, the fifth embodiment
In the example shown in FIG. 13B in FIG.
As shown in (A), the entire circumference of the groove 30 and the groove 39 is covered.
To provide irregularities. On the other hand, the O-ring 33 is also provided with
You. Further, as shown in FIG.
An elastic projection 36 is provided on the upper side, while
A number of grooves 37 are provided over the entire circumference. (Operation) In the configuration shown in FIG.
Grooves 30 and 39, O-ring 3 with turning operation of knob 2
3 repeats that the projections and depressions provided in 3 are disengaged from the engagement. As well
In addition, in the configuration shown in FIG.
37 is repeatedly disengaged from the engagement. (Effect) With the above configuration, FIG.
(A), the rotation of the operation knob 2 in both examples in (B)
Click feeling can be given in operation. to this
Therefore, the menu operation shown in the fourth embodiment is easier to perform.
There is an effect of becoming. (Seventh Embodiment) Hereinafter, a seventh embodiment of the present invention will be described.
An embodiment will be described with reference to FIGS. (Structure, Function and Effect) FIGS.
As shown in (E), not in the case but in the medical device
Operation knob on the operation part of probes used in the sterilization area
2 can also be provided. In FIG. 15A, an endoscope or an electronic
The operation knob 2 is provided on the operation unit of the endoscope 41. In this example
The functions that can be operated by the operation knob 2 are, for example,
Light intensity, image sensor shutter speed, output image color
Key, enhance, AGC, electric focus, electric zoom
System, electronic zoom, electric angle, air / water supply, etc.
A menu operation of various set values can be considered. In FIG. 15B, the endoscope imaging device 42
An operation knob 2 is provided on the operation unit. Operation in this example
Functions that can be operated by the knob 2 include, for example,
Amount, image sensor shutter speed, color tone of output image, enhancement
Sensing, AGC, electric focus, electric zoom, electronic zoom
Menu operation of various setting values, etc.
You. In FIG. 15C, a high-frequency ablation device or an ultrasonic wave is used.
Output forceps 43 such as treatment devices, terminal probes,
The operation knob 2 is placed on the operation unit such as the toscope handle 44.
Provided. Operable with operation knob 2 in this example
Functions include output current, amplitude, incision / coagulation selection, etc.
Menu operations for selection and other various setting values
You. In FIG. 15D, a shaver such as a joint is shown.
And medical laser output devices, heat probe units
The operation knob 2 is provided on the operation unit of any output probe 45.
I have. It can be operated by the operation knob 2 in this example.
Functions include, for example, menu operations for output values and other various setting values.
A work etc. can be considered. In FIG. 15E, the above-mentioned FIGS.
(D) Other medical devices or some of them
Whether the system 47 is wired or wireless
Washable remote control for remote control
The operation knob 2 is provided on the rule unit 46. In this example
The functions that can be operated by the operating knob 2 are as described above.
In addition to the operation contents according to FIGS.
Operation of image recording devices such as abdominal pressure and VTR, and other various settings
A fixed value menu operation is conceivable. The volume according to the above embodiments
For the method of displaying the adjustment amount to the user, for example,
If multiple LEDs are combined on the outer surface of the medical device 1
May be shown, or the outer surface of the medical device 1
Provide an LCD display panel on the top to display graphs
Is also good. In an example such as an electronic endoscope,
A graph may be displayed on the observation monitor screen. (Eighth Embodiment) Hereinafter, an eighth embodiment of the present invention will be described.
An embodiment will be described in detail with reference to FIG. (Structure, Function and Effect)
The rotation mechanism is a rotation mechanism as described in the above embodiments.
It is not necessary to limit to the rotary operation type knob structure.
As shown in FIG. 6, the groove 49 of the knob 48 is
1 is fitted into a rail-shaped projection 50 provided on the outer surface,
It is good also as composition which moves along rail-shaped projection 50
No. In this case, for example, the configuration shown in the second embodiment
In other words, a magnet (not shown) is provided in the knob 48,
A magnetic cell (not shown) is provided near the rail-shaped protrusion 50 in the housing 1.
Sensors will be provided. With the above configuration, the same configuration as that of the second embodiment is obtained.
By moving the knob 48 by the action,
Volume adjustment becomes possible. In such a configuration,
When there are restrictions on the shape and area of the volume installation location
In any case, it is possible to flexibly respond and set the volume
Become. (Supplementary Note) Volume adjustment mechanism provided on the outer surface of medical equipment
In the knob for volume adjustment,
At the part displaced relatively to the outer surface of the medical device.
Having a magnet placed therein, and within the medical device, within the knob
By detecting the lines of magnetic force of the magnet provided in
A magnetic force detection mechanism for detecting the position or displacement of the magnet is provided.
The knob is detachable from the outer surface of the medical device.
Configured to remove the knob from the medical device.
When the device is removed, at least the
The mounting part of the valve is configured to maintain watertightness to the outside.
A volume adjustment mechanism for medical equipment. 2. Remove the knob from the medical device
The volume adjustment amount adjusted by the knob
Having memory means that can be maintained in the medical device; 1
Volume adjustment mechanism described in 1. 3. The knob has a metal piece inside the knob,
The medical device has a magnet, and the magnetic force of the magnet causes the metal
Detecting the position or displacement of a genus piece
Volume adjustment mechanism. 4. The knob controls the medical
Rotational movement around one point on the outer surface of the device
3. The volume adjustment mechanism according to 1 or 2, which performs the following. 5. The knob controls the medical
Perform an operation along a line provided on the outer surface of the device; 1
3. The volume adjustment mechanism according to any one of items 1 to 3. 6. Magnet or gold provided in the knob
Multiple types of genotypes with various numbers or positions of genera
And the above-mentioned inspection described in 1-3.
The type of knob is detected by the intelligence mechanism, and the detected type of knob is
Depending on the type, the content that can be adjusted by the knob changes
To, volume adjustment mechanism. According to the present invention, the outer surface of a medical device
Volume control mechanism with movable knobs or knobs
In the construction, the knob or knob and the medical device outer surface
Erroneous volume operation even when dirt enters the gap
There is no trouble of cropping. And the knob or the knob
Cleaning or cleaning by removing the
Wiping can be simplified, and the knob or knob
The volume adjustment amount is maintained even when the
When removing the knob or knob, remove the knob or knob.
Volume adjustment starting from the volume adjustment amount before removal
Becomes possible.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an external perspective view of a medical device according to a first embodiment of the present invention. FIG. 2 is a diagram illustrating details of a volume adjustment structure according to the first embodiment. FIG. 3 is a rotary magnet 3 according to the first embodiment.
FIG. 3 is a diagram schematically showing a positional relationship between the magnetic sensors 8 and 8 ′. FIG. 4 shows the magnetic sensor 8 in the medical device housing 1;
It is a block diagram showing an example of a circuit configuration for processing the output of 8 '. FIG. 5 is a diagram showing how the magnetism detected by the magnetic sensor 8 changes when the operation knob 2 is rotated. FIG. 6 is an external perspective view of a medical device according to a second embodiment of the present invention. FIG. 7 is a diagram schematically illustrating a positional relationship between a magnet 17 and a magnetic sensor 15 in a second embodiment. FIG. 8 is a block diagram showing an example of a circuit configuration for processing the output of the magnetic sensor 15 in the medical device housing 1. FIG. 9 is a view showing a modification in which an MR element 24 is provided instead of the electric board 16; FIG. 10 is a diagram illustrating details of a volume adjustment structure according to a third embodiment of the present invention. FIG. 11 is a diagram illustrating details of a volume adjustment structure according to a fourth embodiment of the present invention. FIG. 12 is a diagram illustrating a menu operation in the electronic endoscope apparatus, which is enabled by the configuration of the fourth embodiment. FIG. 13 is a diagram for explaining a fifth embodiment of the present invention. FIG. 14 is a diagram for explaining a sixth embodiment of the present invention. FIG. 15 is a diagram for explaining a seventh embodiment of the present invention. FIG. 16 is a diagram for explaining an eighth embodiment of the present invention. [Description of Signs] 1 Medical device housing 2 Operation knob 3 Rotary magnet 4 Recess 5 Rotation shaft 6 Groove 7 Convex 8, 8 'Magnetic sensor 9 Rotation direction detection circuit 10 Counter 11 Memory 12 Light amount determination circuit 13 Aperture drive circuit 14 Aperture 15 Magnetic sensor 16 Electric board 17 Magnet 18 Projection member 19 Angular position detection circuit 20 Metal piece 21 Magnet 22 Post 23 Encoder 24 MR element 25 Rotary magnet

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G03B 17/02 A61B 17/39 F-term (Reference) 2F077 AA41 CC02 JJ01 JJ08 JJ09 JJ23 NN04 NN24 PP12 QQ05 TT52 VV02 VV03 VV04 2H100 AA18 4C026 AA01 FF01 FF60 HH13 HH22 4C060 KK04 KK23 KK47 4C061 AA24 BB01 CC06 DD00 FF11 GG01 HH57 JJ13 JJ17

Claims (1)

Claims: 1. A volume mechanism provided on a water-impermeable exterior of a medical device, an operation knob detachable from the exterior of the medical device, and the exterior when the operation knob is operated. A magnetic member provided in a portion displaced with respect to the magnetic member, a magnetic force detecting unit provided inside the exterior to detect a magnetic line of force emitted from the magnetic member, and a magnetic force detection signal detected by the magnetic force detecting unit. Based on
Output means for outputting a signal corresponding to the position or displacement of the magnetic member.