JP2003225195A - Monitor device of flexible endoscope - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a monitor device of a flexible endoscope capable of safely confirming the shape of an organ into which the endoscope is inserted and the state of the endoscope inside the organ without using the fluoroscopy. <P>SOLUTION: The monitor device of the flexible endoscope has bending state display means 21 and 30 for detecting the bending state of a flexible inserting part 1 and displaying the bending state on a monitor screen 9. The monitor device also has an organ shape display means 40 for displaying the shape 100 of the target organ into which the insertion part 1 is inserted together with the bending state 1' of the inserting part 1 on the monitor screen 9, and organ shape correcting means 99 and 40 for correcting the shape 100 of the organ displayed on the monitor screen 9 according to the output from outside. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible endoscope monitor device for observing the inside of the gastrointestinal tract.

[0002]

2. Description of the Related Art An endoscope can be used to observe an image of the mucosal surface inside a body organ. However, since the shape of the organ into which the endoscope is inserted cannot be known by the endoscope, it is difficult for even a doctor with considerable experience to make an accurate judgment of the insertion state and identify the position of the lesion found. There are many cases.

Therefore, when it is necessary to confirm the insertion state of the endoscope, the endoscopic examination is carried out while carrying a set of endoscope devices to an X-ray room and seeing through with X-rays.

[0004]

However, when an endoscopic examination is performed under fluoroscopy, yellowing of the optical fiber bundle used in the endoscope and the health of patients who are directly exposed to X-rays are observed. In addition to adverse effects, the doctor who operates the endoscope repeatedly
As it will be exposed to the rays, its health will have serious adverse effects.

Therefore, the present invention provides a flexible endoscope capable of safely confirming the shape of the organ into which the endoscope is inserted and the state of the endoscope inside the organ without using fluoroscopy. It is an object to provide a mirror monitor device.

[0006]

In order to achieve the above object, a flexible endoscope monitor device of the present invention is configured to detect a bending state of a flexible insertion portion and display the bending state on a monitor screen. In a monitor device for a flexible endoscope provided with a status display means, an organ shape display means for displaying on the monitor screen the shape of an organ to be inserted into the insertion part together with the bending state of the insertion part, and the display on the monitor screen The organ shape correcting means for correcting the shape of the organ being formed according to an external input is provided.

The organ shape correcting means may correct the display position and the shape of the organ shape displayed on the monitor screen according to an external input. Further, the organ shape display means may read out the template shape of the organ prepared in advance from the storage means and display it on the monitor screen, or alternatively, the shape of the actual organ which is the insertion target of the insertion part may be displayed in advance. The organ shape collecting means for collecting may be provided, and the organ shape collected by the organ shape collecting means may be displayed on the monitor screen by the organ shape display means.

As the bending state detecting portion of the bending state displaying means, a plurality of flexible bending detecting optical fibers provided with a bending detecting portion in which the amount of transmitted light changes according to the size of the bent angle are provided. By disposing each bending detection unit in the insertion unit in a distributed manner, the bending state of the insertion unit may be detected based on the detection value obtained from the plurality of bending detection units. The bending shape of the insertion portion may be displayed by displaying the three-dimensional data in two dimensions.

[0009]

Embodiments of the present invention will be described with reference to the drawings. FIG. 3 shows the distal end portion of the insertion portion 1 of the electronic endoscope, and the distal end body in which the observation window 11, the illumination window 12, the treatment tool projecting opening 13 and the like are arranged at the distal end of the flexible insertion portion 1. 4 are arranged. In the observation window 11, a solid-state image sensor or the like for picking up an endoscopic observation image is arranged.

On the upper surface of the insertion portion 1, a flexible synthetic resin belt-shaped member 20 on which a plurality of bend detecting optical fibers 21 are arranged is attached over the entire length.

The plurality of bend detecting optical fibers 21 are sequentially changed in position and bent back in a smooth U shape, and a bend detecting portion 22 is formed in the vicinity of the bend returning portion of each bend detecting optical fiber 21. ing.

The bending detection portions 22 are arranged in the axial direction of the insertion portion 1 at intervals of, for example, about several centimeters, and for example, about 10 to 30 bending portions are arranged over the entire length of the insertion portion 1.

The bend detecting section 22 is a bend detecting optical fiber 2 in which a plastic core is covered with a clad.
The light absorbing portion is formed only in a predetermined direction (for example, upward or downward) in the middle of 1.

The bend detecting section 22 detects the bending angle of the portion where the bend detecting section 22 is arranged by detecting the change in the amount of transmitted light depending on the degree of bending. can do. The principle is as described in US Pat. No. 5,633,494 and the like, but a brief description will be given below.

In FIG. 4, reference numerals 21a and 21b denote a core and a clad of one bend detecting optical fiber 21, and the bend detecting section 22 totally reflects the light passing through the inside of the core 21a into the core 21a. The light absorbing portion 22a that is absorbed without being formed is formed in a portion of the cladding 21b in a specific direction (here, "downward").

Then, as shown in FIG. 5, when the bend detecting optical fiber 21 is bent upward, the core 2
Since the amount (area) of the light that reaches the light absorbing portion 22a of the light passing through the inside of 1a is increased, the bend detecting optical fiber 21
The light transmission amount of is reduced.

On the contrary, as shown in FIG. 6, when the bend detecting optical fiber 21 is bent downward, the core 21
Since the amount (area) of the light that passes through the inside of a and hits the light absorbing portion 22a decreases, the amount of light transmission of the bend detection optical fiber 21 increases.

Since the bending amount and the light transmitting amount of the bending detecting optical fiber 21 in the light absorbing portion 22a have a constant relationship (for example, a linear function relation), the light transmitting amount of the bending detecting optical fiber 21 is By detecting, the bend detecting section 22 in which the light absorbing section 22a is formed
The bending angle of the part can be detected.

Therefore, when a plurality of bend detecting sections 22 are arranged at intervals in the axial direction of the insertion section 1, the intervals between the bend detecting sections 22 and the detected bend angle of each bend detecting section 22. From the degree, it is possible to detect the bending state of the entire insertion portion 1 in the vertical direction.

Then, as schematically shown in FIG. 7A, a second bending detecting portion 22 'is provided on the flexible band member 20 in parallel with the bending detecting portion 22 as described above.
Is arranged, and the two bend detectors 22 and 2 arranged side by side are arranged.
Comparing the amounts of light transmission of 2 ', when there is no twist in the left and right directions, there is no difference in the amounts of light transfer between the two, and the difference in the amounts of light transfer between the two increases according to the amount of twist in the left and right directions.

Therefore, each bend detecting section 22, 22 '
It is possible to detect the amount of twist in the left-right direction of the portion where the bend detecting portions 22 and 22 'are arranged by measuring the amount of light transmission of the above and comparing the measured values. This principle is as described in US Pat. No. 6,127,672.

Further, as shown in FIG. 7B, the two belt-shaped members 2 in which the bend detecting portions 22 are arranged in a line.
Even if 0 ′ and 20 ″ are arranged in a right-angled positional relationship, a three-dimensional bent state can be detected in the same manner.

Therefore, a plurality of bend detecting portions 22 are arranged at a predetermined interval in the axial direction of the insertion portion 1, and a second plurality of bend detecting portions 22 'are arranged in parallel with the bend detecting portions 22, and each bend detecting portion 22 is arranged. , 22 ', the three-dimensional bending state of the entire insertion portion 1 can be detected by detecting and comparing the amount of transmitted light.

In the flexible endoscope apparatus of this embodiment,
As shown in FIG. 8, a plurality of bend detection optical fibers 21 are attached to the front surface side of the belt-shaped member 20 so that the bend detection portions 22 are located at regular intervals in the longitudinal direction of the belt-shaped member 20, and each of the front-side bending optical fibers 21. A second plurality of bend detecting optical fibers 21 'are provided on the back surface side of the belt-shaped member 20 so that the second bend detecting portions 22' are arranged beside the bend detecting portion 22.
Is attached.

In addition, at least one simple reference optical fiber 21R having no light absorbing portion 22a is arranged, and the optical transmission amount of each bend detecting optical fiber 21 is compared with that of the reference optical fiber 21R. Therefore, bend detection optical fiber 2
It is possible to eliminate the influence of temperature, deterioration over time, etc. on the light transmission amount of 1.

FIG. 1 schematically shows the overall structure of an apparatus for displaying an endoscopic observation image and a bent shape 1'of an insertion portion 1 by using the above-mentioned electronic endoscope, which is imaged by a solid-state imaging device. The endoscopic observation image is processed by the endoscopic processor 7 and displayed on the observation image display monitor 8.

An output signal from the optical signal input / output device 30 connected to the proximal end side of the bend detecting optical fiber 21 is sent to the computer 40, and the bending shape of the insertion portion 1 is generated by the signal output from the computer 40. 1'is displayed on the insertion state display monitor 9.

FIG. 9 shows an example of the optical signal input / output device 30 used therein, in which the light emitted from one light emitting diode 31 is all the optical fibers 21, 21 ',.
It is incident on 21R. Reference numeral 32 is a drive circuit for the light emitting diode 31.

Then, each optical fiber 21, 21 ', 2
A photodiode 33 that converts the intensity level of light into a voltage level and outputs the voltage level is provided for each of the 1R emission ends.
The output from each photodiode 33 is amplified by an amplifier 34 and then converted into a digital signal by an analog / digital converter 35.

Next, the signals output in parallel from the plurality of analog / digital converters 35 are converted into serial signals in the parallel / serial converter 36 and sent out from the connector 6.

When the insertion portion 1 is inserted into the body, as shown in FIG. 1, the insertion portion guide member 50 is attached to the entrance portion (for example, mouth or anus) into the body,
The insertion section 1 is passed through the insertion section guide member 50.

The insertion portion guide member 50 is provided with an encoder 60 or the like for detecting the insertion length L of the insertion portion 1 (that is, the passage length with respect to the insertion portion guide member 50), and an output signal from the encoder 60. Are sent to the computer 40.

FIG. 10 shows such an insertion portion guide member 50.
An example is shown, and a plurality of rotatable spherical members 51 urged by a compression coil spring 52 are arranged so as to sandwich the insertion portion 1 from the surroundings.

Therefore, each spherical member 51 rotates in proportion to the insertion length L of the insertion portion 1 and outputs to one of the spherical members 51 a number of pulses proportional to the insertion length L of the insertion portion 1. The encoder 60 is connected.

However, the insertion length L of the insertion portion 1 in the insertion portion guide member 50 can be detected by, for example, Japanese Unexamined Patent Publication No. 56-9742.
As described in No. 9, JP-A-60-217326 and the like, light reflection from the surface of the insertion portion 1 may be used, and other means may be used.

In this way, as shown in FIG.
From the optical signal input / output device 30 (via the endoscope processor 7) and the encoder 60 to the computer 40, the insertion unit 1
The bending state detection signal and the insertion length detection signal are input, and the image 50 'of the insertion portion guide member 50 and the bending shape 1'of the insertion portion 1 are input.
And are displayed on the insertion state display monitor 9.

FIG. 11 is a flow chart showing the outline of the contents of software of the computer 40 for displaying such an image on the insertion state display monitor 9, and S in the figure shows a processing step.

In order to display the accurate bent state on the insertion state display monitor 9, first, before the insertion section 1 is inserted into the body, the bending angle and bending of the insertion section 1 of the endoscope actually used are detected. The detection signal obtained from the optical fiber 21 is compared with the bending shape coordinate system (x
It is preferable to perform calibration in advance so that both coordinates of (yz) and the coordinate of the organ shape coordinate system (XYZ) have a correlation (S1). The organ shape coordinate system (XYZ) may be defined, for example, in a state where an upright human body is viewed from the front, the horizontal direction is the X axis, the vertical direction is the Z axis, and the depth is the Y axis.

When the insertion section 1 is inserted into the body, a detection signal of the insertion length L of the insertion section 1 is input from the encoder 60 (S2), and at which position of the insertion section guide member 50 the insertion section 1 is located. Is calculated (S3).

Next, each bend detecting optical fiber 21
Detection signal V ₁ ... by entering from (S4), and converts the detection signal V ₁ ... the skew angle based on the calibration data (S5), the bending angle of the bending detection section 22 portion, three-dimensional Each bend detection unit 22 on coordinates
The position of is calculated (S6).

Then, on the insertion state display monitor 9, the position of the image 50 'of the insertion portion guide member 50 is not moved, and the positions of the respective bend detection portions 22 are smoothly connected to each other to be displayed. The bending state is displayed (S
7) Return to S2 and repeat S2 to S7.

When performing such a display, the display on the insertion state display monitor 9 is a two-dimensional image, but since three-dimensional data about the position of each bend detecting portion 22 is obtained, "upward". Not only that, the bending state of the insertion portion 1 in an arbitrary rotation direction can be displayed.

FIG. 2 shows the entire configuration of the apparatus including the internal configurations of the computer 40 and the endoscope processor 7 which are not shown in FIG. 1, and only the reference numerals are given to the portions already described. Is attached and the description thereof is omitted.

The computer 40 includes a central processing unit (C
PU) 41, input / output circuits 42 and 43 for inputting / outputting signals to / from the outside, an image capture 44 for receiving an image signal from the outside, a storage device 45 for storing software and various other data, and a video display Video display circuit 4
Circuits such as 6 are arranged, and the coordinate calculation 47 and the composite image construction 48 are performed by executing software.

Of these, the storage device 45 stores the model shapes of various organs into which the endoscope is inserted, and an instruction signal input from the instruction input device 99 connected to the input / output circuit 42. With this, an appropriate organ shape 100 can be displayed on the insertion state display monitor 9 together with the bent shape 1'of the insertion portion 1.

The display on the insertion state display monitor 9 may be only the one in which the organ shape 100 and the bent shape 1'of the insertion portion 1 are superposed as shown in FIG. As shown, such a superimposed image (two-dimensional image) may be displayed side by side next to the bent shape 1 ′ of the insertion portion 1 (a two-dimensional display of a three-dimensional image).

Returning to FIG. 2, the endoscope processor 7 includes
In addition to the system control circuit 71, the storage device 72, and the like, a light source section 73 and the like for supplying illumination light to the light guide of the endoscope are provided side by side.

The video signal of the endoscopic observation image output through the preprocessing circuit 74 and the signal processing unit 75 is
The video display circuit 76 outputs not only the observation image display monitor 8 but also the image capture 44 of the computer 40.

As a result, as shown in FIG. 13, an image of only the bent shape 1'of the insertion portion 1 and the organ shape 100 and the bent shape 1'of the insertion portion 1 are superimposed on the insertion state display monitor 9. It is also possible to display the combined image and the endoscopic observation image V side by side.

However, since the shape and size of the organs of the living body generally vary from person to person, the standard template organ shape often does not match the shape of the organ into which the endoscope is actually inserted.

Therefore, in this embodiment, the organ shape 10 is provided at a plurality of locations where the operator can easily recognize from the endoscopic observation image which location the tip position of the insertion portion 1 of the endoscope is currently located.
The operator marks on the screen where 0 is displayed, and the position and shape of the organ shape 100 is corrected based on the information,
The relationship between the bent shape 1'of the insertion portion 1 and the organ shape 100 is accurately displayed.

14 to 17 are flow charts showing the contents of software of the computer 40 for executing such processing. Here, first, as shown in FIG. The bending shape 1'of the insertion portion 1 of the endoscope is plotted according to the insertion (S11). This is performed by the subroutine processing of S1 to S7 described above.

When the tip position of the insertion portion 1 of the endoscope comes to the first point A (for example, the cardia) where the operator can easily recognize it from the endoscopic observation image, the instruction input device 99 is used. As shown in FIG. 19, an identification mark is input at that position.

The instruction input device 99 may be a mouse, a keyboard, or an endoscope operation button to which a cursor moving function is assigned. If the first point A is determined in advance, the instruction input device 99 will be displayed on the endoscope observation screen. You can also perform a simple operation such as pressing the return key when you come to the site (S1
2).

The plot of the bent shape 1'of the insertion portion 1 is repeated until the first point A is selected. Then, when the first point A is selected, the coordinate position of the identification mark is stored (S13).

The bending shape coordinate system of the insertion portion 1 is (xy
z) It is a three-dimensional coordinate system, and the organ shape 100 is also made of three-dimensional elements, but the monitor display is a two-dimensional image display for the sake of simplification of processing and speedup.

Next, the coordinates at the first point A are acquired and the coordinate conversion subroutine processing (S141 to S141) is performed.
144) is performed to display the composite image at the first point A (S14).

In the subroutines S141 to S143, the following coordinate conversion processing is performed. Since the bending shape coordinate system (xyz) of the insertion portion 1 and the organ shape coordinate system (XYZ) are different from each other, the coordinate transformation of the organ shape coordinate system (XYZ) is performed so that they coincide with each other at the first point A. .

Point A (XA, YA, ZA on the organ shape coordinate system
), The position of the tip of the insertion part in the bending shape coordinate system of the insertion part 1
(Xa, ya, za), and the deviations of the coordinate values of the point A and the point a are tx, ty, and tz.

Then, the point A (XA, YA, ZA) is tx,
By translating by ty and tz, the point a (xa, y
a, za), this relationship can be expressed by the following equation.

[0061]

[Equation 1]

Therefore, in S144, the first point A and the bent shape 1'of the insertion portion 1 matched with the first point A are superimposed and displayed on the insertion state display monitor 9 in a superimposed manner. As a result, at this point, the bending shape 1'of the insertion portion 1 is
And the first point A mark is displayed on the insertion state display monitor 9.

Then, the insertion of the insertion portion 1 of the endoscope is further advanced (S15). Since the bending shape coordinates of the insertion portion 1 and the organ shape coordinates coincide with each other at the first point A, there is no error between the bending shape and the organ shape of the insertion portion 1 in the vicinity thereof except the setting error of the operator.

When the insertion section 1 is further inserted into the body and the operator can easily recognize the tip position of the insertion section 1 of the endoscope from the endoscopic observation image, for example, at the pylorus, the second point B ( The point on the bending shape coordinate system of the insertion section 1 is set by the instruction input device 99 (S16), and the coordinates of the second point B '(pyloric part on the organ shape coordinate) on the organ coordinate system are acquired (S16). S17).

Next, the coordinate conversion subroutine process (S1
81 to S184), and as shown in FIG.
Coordinate conversion is performed so that the second point B designated from the tip position of the insertion portion 1 coincides with the point B ′ on the organ formation side (S18).

Since the first point A is fixed, the body organ shape coordinates (XYZ) are XYZ so that the point B ′ moves to the point B with the first point A as the reference point.
Coordinate conversion is accomplished by performing scale conversion on the coordinate axes.

Here, the scale conversion rates for the X-axis, the Y-axis, and the Z-axis are d, e, and f, respectively. Taking the Y-axis as an example in FIG. 20, the first reference points A to B are used.
The distance to the point is YA-B, and the first point is A to B '.
If the distance to the point is YA-B ', the scale conversion rate e for the Y axis is e = YA-B / YA-B', and similarly the scale conversion rates d, f for the X axis and the Z axis are also You can ask.

Point B (xB, yB) of the bending shape coordinate of the insertion portion 1
, zB) and the point B '(XB', YB ', ZB' of the organ shape coordinate)
), The conversion matrix when matching is used using the scale conversion rates d, e, f

[0069]

[Equation 2]

It can be expressed as Therefore, as shown in FIG. 21, the bending shape 1'of the insertion portion 1 in which the second point B'is matched with B is displayed in an overlapping manner on the organ shape screen (S184).

Then, the bending process 1'of the insertion portion 1 is further plotted by the subroutine processing of S1 to S7 described above (S19). However, the bending shape coordinates of the insertion portion 1 and the organ shape coordinates have already almost coincided with each other, but the original organ shape and the actual living body part may differ in shape due to individual differences between patients. Therefore, the composite image correction subroutine (S201 to S204) corrects the composite image to a more practical natural state (S20).

Here, first, the insertion portion 1 at that position
The coordinates of the bent shape are acquired (S201), the contour coordinate values of the organ shape on the XYZ axes are acquired, and the maximum value and the minimum value are obtained (S202).

If the coordinate values of the bend detecting section 22 arranged in the insertion section 1 are within the maximum and minimum values of the organ shape contour, it is determined that the bending shape of the insertion section 1 is within the organ shape contour, and in S21. (S203).

When the coordinate value of the bend detecting section 22 deviates from the maximum value or the minimum value of the organ shape contour, the organ of the coordinate of the bend detecting section 22 deviates from the organ shape contour with the line segment connecting the points AB as the fixed axis. Scale conversion is performed so as to absorb the difference from the shape contour (S204).

Specifically, after the rotational coordinate conversion is performed so that the line segment connecting the points AB becomes a new coordinate axis, scale conversion is performed on the new coordinate axis so that the sensor position is located inside the organ shape contour. Image correction as follows,
Proceed to S21.

In this way, the shape of the organ to be inserted by the insertion section 1 is displayed on the insertion state display monitor 9 together with the bent shape 1'of the insertion section 1, and the organ shape displayed on the screen is externally displayed. According to the input, the shape can be corrected to a shape close to the actual organ shape, and the endoscopic examination can be safely performed without using X-ray fluoroscopy or the like together.

The shape data of the observed region of the patient is acquired in advance by using an organ shape sampling means such as a CT scanner, and instead of the model shape of the organ, the patient's own organ shape diagram and endoscope are used. The bending shape of the insertion portion 1 may be combined and displayed as an image. In that case, it is easy to understand by combining with a tissue shape image whose contour is extracted from a CT scanner image or the like by image processing.

In the above embodiment, the composite image display is described as being displayed from the one-viewpoint direction. However, the composite image display may display a front image and images in two directions from the side at the same time, or three-dimensionally. It may be displayed as an image.

Although the stomach is taken as an example of the organ, various organ data may be prepared in advance and a desired organ shape may be used from the data. Furthermore, by printing a composite image with the organ shape at the same time as the endoscopic image, it becomes possible to easily determine which part of the image is the image later, which is effective in post-examination diagnosis and examination. .

[0080]

According to the present invention, the shape of the organ to be inserted into the insertion portion of the endoscope is displayed on the monitor screen together with the bending state of the insertion portion, and the shape of the organ displayed on the monitor screen is displayed. Since the shape can be corrected to a shape close to the actual organ shape according to an external input, the shape of the organ into which the endoscope is inserted and the state of the endoscope inside the endoscope can be confirmed at a glance. The endoscopy can be safely performed without using fluoroscopy or the like.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing the overall configuration of a flexible endoscope monitor device according to an embodiment of the present invention in use.

FIG. 2 is a block diagram showing an overall configuration of a monitor device for a flexible endoscope according to an embodiment of the present invention.

FIG. 3 is a perspective view of the vicinity of the tip of the insertion portion of the electronic endoscope according to the embodiment of the present invention.

FIG. 4 is a schematic sectional view of a bend detecting portion of the bend detecting optical fiber used in the embodiment of the present invention.

FIG. 5 is a schematic cross-sectional view showing a state in which the bend detecting portion of the bend detecting optical fiber used in the embodiment of the present invention is bent.

FIG. 6 is a schematic cross-sectional view showing a state in which the bend detecting portion of the bend detecting optical fiber used in the embodiment of the present invention is bent in the opposite direction.

FIG. 7 is a schematic diagram for explaining the principle of three-dimensional bending state detection by the bending detection optical fiber used in the embodiment of the present invention.

FIG. 8 is a plan view of a belt-shaped member to which a bend detecting optical fiber according to an embodiment of the present invention is attached.

FIG. 9 is a circuit diagram of an optical signal input / output device according to an embodiment of the present invention.

FIG. 10 is a front sectional view of an insertion portion guide member according to the embodiment of the present invention.

FIG. 11 is a flow chart schematically showing the contents of software of the computer of the embodiment of the present invention.

FIG. 12 is a schematic view showing an example of a monitor screen display according to the embodiment of the present invention.

FIG. 13 is a schematic view showing an example of a monitor screen display according to the embodiment of the present invention.

FIG. 14 is a flow chart schematically showing the contents of software of the computer of the embodiment of the present invention.

FIG. 15 is a flow chart schematically showing the contents of software of the computer of the embodiment of the present invention.

FIG. 16 is a flowchart schematically showing the contents of software of the computer of the embodiment of the present invention.

FIG. 17 is a flow chart schematically showing the contents of software of the computer of the embodiment of the present invention.

FIG. 18 is a coordinate diagram for explaining the operation of the embodiment of the present invention.

FIG. 19 is a coordinate diagram for explaining the operation of the embodiment of the present invention.

FIG. 20 is a coordinate diagram for explaining the operation of the embodiment of the present invention.

FIG. 21 is a coordinate diagram for explaining the operation of the embodiment of the present invention.

[Explanation of symbols]

1 Insert Bent shape of 1'insertion part 9 Insertion status display monitor 21 Optical fiber for bend detection 22 Bending detector 30 Optical signal input / output device 40 computers 99 instruction input device A first point B second point 100 organ shape

Continued front page    (72) Inventor Takayuki Enomoto             2-36 Maeno-cho, Itabashi-ku, Tokyo Asahikou             Gaku Kogyo Co., Ltd. (72) Inventor Minoru Matsushita             2-36 Maeno-cho, Itabashi-ku, Tokyo Asahikou             Gaku Kogyo Co., Ltd. F-term (reference) 4C061 CC06 DD03 FF46 HH51 LL02                       NN05 VV04 WW10 WW20

Claims (6)

[Claims] 1. A monitor device for a flexible endoscope provided with a bending state display means for detecting a bending state of a flexible insertion portion and displaying the bending state on a monitor screen, which is an insertion target of the insertion portion. An organ shape display means for displaying the shape of the organ on the monitor screen together with the bending state of the insertion portion, and an organ shape correction means for correcting the shape of the organ displayed on the monitor screen according to an external input are provided. A monitor device for a flexible endoscope, characterized in that 2. The monitor device for a flexible endoscope according to claim 1, wherein the organ shape correction means corrects the display position and shape of the organ shape displayed on the monitor screen in accordance with an external input. 3. The monitor device for a flexible endoscope according to claim 1, wherein the organ shape display means reads out a template shape of an organ prepared in advance from the storage means and displays it on the monitor screen. 4. An organ shape collecting means for collecting in advance the shape of an actual organ to be inserted into the insertion part is provided, and the organ shape collected by the organ shape collecting means is displayed by the organ shape display means. The monitor device for a flexible endoscope according to claim 1, which is displayed on the monitor screen. 5. A plurality of flexible bend detecting optical fibers formed as bend detecting portions of the bend indicating means, wherein bend detecting portions are formed so that the amount of transmitted light changes according to the size of the bent angle. Is provided, the bending detection sections are arranged in a distributed manner in the insertion section, and the bending state of the insertion section is detected based on detection values obtained from the plurality of bending detection sections. 3. The monitor device for a flexible endoscope according to 3 or 4. 6. The flexible endoscope according to claim 5, wherein the bending shape of the insertion portion is displayed on the monitor screen by the bending state display means by displaying three-dimensional data in two dimensions. Monitor device.