JP4409227B2 - Probe-type observation apparatus and endoscope apparatus - Google Patents

Description

  The present invention relates to a probe-type observation apparatus and an endoscope apparatus.

  Conventionally, histological observation of mucosal epithelium including cells and glandular structures in vivo (while living) has attracted attention as being important for early detection and early diagnosis of cancer. In order to meet such demands, in addition to normal magnification endoscopic observation, magnification observation at a histological observation level (approximately 20 to 1000 times with a general microscope) is necessary. . As an apparatus that meets such demands, an endoscope having a normal magnification imaging optical system (hereinafter referred to as a low magnification optical system) and a high magnification imaging optical system (hereinafter referred to as a high magnification optical system) in parallel. A mirror device is disclosed (for example, refer to Patent Document 1).

According to this endoscope apparatus, while observing a suspicious part such as a cancer cell at a high magnification with a high magnification imaging optical system while observing at a normal magnification with a low magnification optical system, tissue in vivo. Observation is possible.
US Pat. No. 5,846,185

By the way, in the conventional endoscope apparatus described above, all of the illumination optical system that illuminates the imaging target, the processor that captures the captured image signal and generates a video, and the monitor that displays the video generated by the processor are all included. However, it is required for each of the low-magnification optical system and the high-magnification imaging optical system.
Since these incidental devices are relatively large, they have been a major cause of hindering downsizing of the entire endoscope apparatus.

  In addition, having similar accessory devices overlapped between the low-magnification optical system and the high-magnification imaging optical system has been a cause of hindering reduction in manufacturing cost.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide means that can achieve downsizing and cost reduction of the apparatus.

The present invention employs the following means in order to solve the above problems.
That is, the probe-type observation apparatus of the present invention is provided on the distal end side of the probe body inserted into the treatment instrument insertion hole of the endoscope body having the imaging optical system at the distal end, and from the imaging optical system. A high-magnification imaging optical system capable of capturing a high-magnification image and either an image signal from the imaging optical system or an image signal from the high-magnification imaging optical system provided on the rear end side of the probe body And a first switching means for selecting which of the image signals is input to the first processor, the first switching means. The dimming that increases the luminance of the illumination optical system when the high-magnification imaging optical system is selected and driven with respect to the illumination optical system that illuminates the imaging target as compared with the case where the imaging optical system is selected and driven. Send signal Characterized in that that.

According to the probe observation apparatus of this, by the operation of the first switching means, when selecting the image signal from the imaging optical system, only the selected image signal is input to the first processor, the image A signal is generated. By inputting this image signal to, for example, a display device or the like, it is possible to display an image captured by the imaging optical system on the endoscope body side.
On the other hand, when an image signal from the high-magnification imaging optical system is selected by operating the first switching unit, only the selected image signal is input to the first processor and an image signal is generated. By inputting this image signal to, for example, a display device, it is possible to display an image captured by a high-magnification imaging optical system on the probe-type observation device side.
As described above, the processing of the image signal captured by the imaging optical system of the endoscope body and the processing of the image signal captured by the high-magnification imaging optical system of the probe type observation apparatus are performed by a switching operation by the first switching unit. Can be performed by a common first processor.
Furthermore, since it is not necessary to use a plurality of processors as in the prior art, the output destination of the generated image signal (for example, a display device) may be a single unit.

Furthermore , according to this probe-type observation apparatus, when the first switching unit performs selection with the high-magnification imaging optical system, a dimming signal is simultaneously transmitted toward the illumination optical system. The illumination optical system that has received the dimming signal performs dimming that increases the luminance of the illumination that illuminates the imaging target, as compared with the case where the imaging optical system captures an image.

The probe-type observation apparatus of the present invention is provided with a probe main body inserted through a treatment instrument insertion hole of an endoscope main body having an imaging optical system at the distal end, and provided at the distal end side of the probe main body, which is higher than the imaging optical system. A high-magnification imaging optical system capable of capturing a high-magnification image; and provided on the rear end side of the probe main body, generating an image by inputting an image signal from the high-magnification imaging optical system, and from the imaging optical system It comprises the second processor for inputting an image based on the image signal, and a second switching means for selecting whether to output either one of the respective images from the second processor, the second switch The illumination optical switching unit is configured to send an illumination light switching signal for switching a type of illumination light according to which of the images is output from the second processor to the illumination optical system that illuminates the imaging target. And transmits to.

According to the probe observation apparatus of this, by the operation of the second switching means, when you choose to output towards the image signal based on the image signal from the imaging optical system, only the selected image signal Output from the second processor. By inputting this image signal to, for example, a display device or the like, it is possible to display an image captured by the imaging optical system on the endoscope body side.
On the other hand, when the selection of outputting the image signal based on the image signal from the high-magnification imaging optical system by the operation of the second switching means, only the selected image signal is output from the second processor. Is done. By inputting this image signal to, for example, a display device, it is possible to display an image captured by a high-magnification imaging optical system on the probe-type observation device side.
As described above, the output of the image captured by the imaging optical system of the endoscope body and the output of the image captured by the high-magnification imaging optical system of the probe type observation apparatus are simply switched by the switching operation by the second switching unit. This can be done from one second processor. Accordingly, since there are not a plurality of output sources of the generated image signal as in the prior art (the image signals are not output individually from the plurality of processors), the output destination (for example, a display device) of the generated image signal is also It can be done alone.

Furthermore , according to this probe type observation device, when the second switching means performs selection to switch between imaging by the high magnification imaging optical system and imaging by the imaging optical system, the illumination light switching signal is simultaneously illuminated. It is transmitted toward the optical system. The illumination optical system that has received the illumination light switching signal determines the type of illumination that illuminates the imaging target (for example, a surface sequential type or (Simultaneous type) switching.

An endoscope apparatus according to the present invention includes an endoscope main body having an imaging optical system at a distal end, and a probe type observation apparatus having a high-magnification imaging optical system capable of capturing an image with a higher magnification than the imaging optical system. The probe type observation apparatus includes the probe type observation apparatus of the present invention .
According to the endoscope apparatus of this, it is possible to achieve device miniaturization and cost reduction.

Probe observation apparatus of the present invention comprises a probe body which is inserted through the treatment instrument insertion hole of the endoscope body, the high magnification imaging optical system which can image a high magnification image, or the image signal from the imaging optical system A first processor that inputs one of the image signals from the high-magnification imaging optical system and generates an image signal, and a first that selects which of the image signals is input to the first processor A configuration including switching means was adopted.
According to this configuration, it is not necessary to use a plurality of processors as in the prior art, and the number of processors can be reduced. Further, with the reduction in the number of processors, a single output destination (for example, a display device) of the generated image signal is sufficient. Therefore, it is possible to achieve device miniaturization and cost reduction when used as an endoscope device in combination with an endoscope body.

In the probe-type observation apparatus according to the present invention , when the first switching unit selects and drives the high-magnification imaging optical system, the luminance of the illumination optical system is increased more than when the imaging optical system is selected and driven. The configuration that transmits the dimming signal to be used was adopted. According to this configuration, it is possible to substantially match the brightness balance between the image captured by the imaging optical system and the image captured by the high-magnification imaging optical system.

The probe-type observation apparatus of the present invention includes a probe main body that is inserted into the treatment instrument insertion hole of the endoscope main body, a high-magnification imaging optical system that can capture a high-magnification image, and a high-magnification imaging optical system. Select an image signal to be generated by inputting an image signal, and a second processor to which the image signal based on the image signal from the imaging optical system is input, and which of the image signals to be output to the second processor. The structure provided with the 2nd switching means to do was employ | adopted. According to this configuration, the output destination of the generated image signal (for example, a display device) is sufficient, so that the device can be reduced in size and cost when used as an endoscope device in combination with the endoscope body. It becomes possible.

In the probe-type observation apparatus of the present invention , the second switching unit transmits an illumination light switching signal for switching the type of illumination light depending on which of the image signals is output from the second processor. It was adopted. According to this configuration, it is possible to illuminate the image with a type of illumination suitable for each of the imaging with the imaging optical system and the imaging with the high-magnification imaging optical system, so that a good image can be acquired.

In addition, an endoscope apparatus according to the present invention includes an endoscope main body having an imaging optical system, and a probe type observation apparatus having a high magnification imaging optical system capable of capturing a high magnification image, and the probe type observation apparatus As described above, a configuration including the probe type observation device of the present invention was adopted. According to this configuration, it is possible to achieve device miniaturization and cost reduction.

  DESCRIPTION OF EMBODIMENTS Embodiments of an endoscope apparatus provided with a probe type observation apparatus of the present invention will be described below with reference to the drawings, but the present invention is of course not limited to these. .

(First embodiment)
First, the first embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is an explanatory diagram for explaining main components of an endoscope apparatus provided with the probe type observation apparatus of the present embodiment. FIG. 2 is a graph for explaining light amount control of the illumination optical system of the endoscope apparatus, in which the horizontal axis indicates time and the vertical axis indicates a drive current value correlated with the lamp light amount. FIG. 3 is a view showing a modification of the endoscope apparatus, and shows a portion corresponding to part A of FIG. FIG. 4 is a view showing another modification of the endoscope apparatus, and corresponds to FIG.

  As shown in FIG. 1, the endoscope apparatus of the present embodiment includes an endoscope main body 10 that is inserted into a body cavity, and a probe-type observation that is inserted into a treatment instrument insertion hole 11 of the endoscope main body 10. The apparatus 20, the illumination optical system 30 serving as a light source for illuminating the imaging range of the endoscope body 10 and the probe type observation apparatus 20, and an endoscope image signal (image signal) or probe type from the endoscope body 10 A processor 40 that captures any one of the probe image signals (image signals) from the observation device 20, performs image processing on the probe image signal, and generates an image, and a monitor (display device) that captures and displays the image from the processor 40. 50 and is roughly configured.

The endoscope main body 10 is supplied from a long insertion portion 12 that can be bent flexibly, a first imaging means (imaging optical system) 13 for normal observation built in a distal end thereof, and the illumination optical system 30. The illumination means 14 which irradiates the illuminating light from the front-end | tip of the insertion part 12, and the operation part 15 provided in the rear end of the insertion part 12 are provided.
The treatment instrument insertion hole 11 is provided in the endoscope body 10 so as to penetrate in the length direction of the insertion section 12 from the treatment instrument insertion port 11a provided in the vicinity of the operation section 15 to the distal end of the insertion section 12. It has been.

The first imaging means 13 includes, for example, a charge coupled device (hereinafter referred to as a CCD) 13b built in the distal end of the insertion portion 12, and an optical element 13a such as an objective lens disposed in front of the CCD 13b. It is prepared for. The signal cable 13b1 connected to the CCD 13b is pulled out to the operation unit 15 through the insertion unit 12, and further connected to a relay circuit 21 described later through the connection cable 16.
The illumination means 14 includes an illumination lens 14a disposed at the distal end of the insertion portion 12, and a light guide (optical fiber) 14b that guides illumination light supplied from the illumination optical system 30 to the illumination lens 14a.
The operation unit 15 includes a plurality of switches and an operation knob (not shown). These operation knobs bend the insertion portion 12 in an arbitrary direction, and control the opposing direction of the first imaging means 13 and the illumination means 14 arranged at the tip from the rear end side of the insertion portion 12. Yes.

The probe-type observation apparatus 20 includes a long insertion portion (probe main body) 22 that can be bent flexibly, a second imaging means (high-magnification imaging optical system) 23 disposed at the tip of the insertion portion 22, and an insertion. The relay circuit 21 built in the connection connector 22 a provided at the rear end of the unit 22, the observation image changeover switch 24 for switching an image to be displayed on the monitor 50, and the processor 40 are configured. .
The insertion portion 22 can protrude and retract from the distal end surface 10a of the endoscope body 10, and the distal end surface can be brought into close contact with the body cavity surface X when projected from the distal end surface 10a. ing.

  The second image pickup means 23 is an image pickup means capable of picking up an image that is optically higher in magnification than the first image pickup means 13, and has a high magnification such as a high-power objective lens disposed at the distal end of the insertion portion 22. An optical system 23a and a charge coupled device (hereinafter referred to as a CCD) 23b fixed at the imaging position are provided. A signal cable 23b1 is connected to the CCD 23b. The signal cable 23b1 passes through the insertion portion 22 in the longitudinal direction of the insertion portion 22, and is connected to the relay circuit 21 in the connection connector 22a.

The illumination optical system 30 includes a lamp 31 that generates white light, a lamp driving unit 32 that adjusts the illuminance of the white light emitted from the lamp 31, and the rear end of the light guide 14b that emits white light emitted from the lamp 31. And a condensing lens 33 for condensing and entering the light. Therefore, the endoscope apparatus according to the present embodiment is a homogeneous endoscope apparatus.
The processor 40 is connected to the relay circuit 21 in the connection connector 22 a provided on the rear end side of the insertion portion 22. The processor 40 can input an image signal from the first imaging unit 13 or an image signal from the second imaging unit 23 to generate an image.

The processor 40 receives either a CCD driver 41 that drives either the CCD 13b or the CCD 23b, and an endoscopic image signal from the CCD 13b or a probe image signal from the CCD 23b, and performs signal processing on the signal. In response to the input from the observation switch 24 and the video signal circuit 42 for generating an endoscopic image or a probe image, the CCD connected to the CCD driver 41 is switched to either the CCD 13b or the CCD 23b. A switching control unit 43 for supplying a control signal to the relay circuit 21.
Then, a switching means for selecting which one of the endoscopic image and the probe image is input into the processor 40 by the combination of the observation switching switch 24, the switching control unit 43, and the relay circuit 21 (the first switching unit). Switching means). By this switching means, it is possible to operate which of the endoscopic image and the probe image is displayed on the monitor 50.

Further, the switching control unit 43 forming a part of the switching unit selects the second imaging unit 23 by switching the relay circuit 21 and drives the second imaging unit 23 with respect to the lamp driving unit 32 of the illumination optical system 30. Dimming signal is transmitted.
When receiving the light control signal, the lamp driving unit 32 controls the light amount of the lamp 31 so that the luminance of the illumination optical system 30 is higher than when the first imaging unit 13 is selected and driven.

The operation of the endoscope apparatus of the present embodiment having the above-described configuration will be described below.
First, after inserting the insertion part 22 of the probe type observation device 20 into the treatment instrument insertion hole 11 of the endoscope body 10, the insertion part 22 is inserted into the body cavity of the subject. In this state, the illumination optical system 30 and the processor 40 are operated. And the 1st imaging means 13, the 2nd imaging means 23, and the illumination means 14 are orient | assigned to a desired direction by operating the said operation knob provided in the operation part 15 of the endoscope main body 10. FIG. Further, by operating the observation changeover switch 24, it is selected which of the first imaging unit 13 and the second imaging unit 23 is used for imaging.

When the observation changeover switch 24 is operated so as to take an image with the first imaging means 13, a signal from the observation changeover switch 24 is input to the change control unit 43. Then, the switching control unit 43 drives the relay circuit 21 so that the signal cable 13b1 of the first imaging unit 13 is connected to the CCD driver 41. At the same time, the switching control unit 43 transmits a dimming signal for giving the illumination unit 14 a light amount suitable for imaging by the first imaging unit 13 to the lamp driving unit 32.
In the illumination optical system 30, the lamp 31 emits light by driving the lamp driving unit 32, and white light having a light amount suitable for imaging using the first imaging unit 13 is emitted. The white light is condensed and incident on the rear end of the light guide 14 b by the condenser lens 33. And the white light radiate | emitted from the front-end | tip of the light guide 14b illuminates the imaging range of the body cavity surface X through the illumination lens 14a.

On the other hand, the CCD driver 41 drives the CCD 13b via the relay circuit 21 and the signal cable 13b1. Thereby, the CCD 13b transmits the image signal of the image captured through the optical element 13a to the video signal circuit 42 through the signal cable 13b1 and the relay circuit 21.
The video signal circuit 42 performs signal processing on the received image signal to generate an endoscopic image, and then outputs the endoscopic image to the monitor 50. In this way, the endoscopic image captured by the first imaging unit 13 is displayed on the monitor 50.

When the observation changeover switch 24 is operated so as to take an image with the second imaging means 23, a signal from the observation changeover switch 24 is input to the change control unit 43. Then, the switching control unit 43 drives the relay circuit 21 so that the signal cable 23ba1 of the second imaging unit 23 is connected to the CCD driver 41. At the same time, the switching control unit 43 transmits a dimming signal for giving the illumination unit 14 a light amount suitable for imaging by the second imaging unit 23 to the lamp driving unit 32.
In the illumination optical system 30, white light having a light amount suitable for imaging using the second imaging unit 23 is emitted. That is, the lamp drive unit 32 performs dimming control to increase the lamp drive current and increase the light amount of the lamp 31 as shown in FIG.
The white light whose brightness is increased in this way is collected and incident on the rear end of the light guide 14 b by the condenser lens 33. And the white light radiate | emitted from the front-end | tip of the light guide 14b illuminates the imaging range of the body cavity surface X more brightly through the illumination lens 14a.

On the other hand, the CCD driver 41 drives the CCD 23b via the relay circuit 21 and the signal cable 23b1. Thereby, the CCD 23b transmits the image signal of the image captured through the optical element 23a to the video signal circuit 42 through the signal cable 23b1 and the relay circuit 21.
The video signal circuit 42 performs signal processing on the received image signal to generate a probe image, and then outputs the probe image to the monitor 50. In this way, the probe image captured by the second imaging unit 23 is displayed on the monitor 50.
Since the first imaging unit 13 and the second imaging unit 23 have different optical magnifications, the brightness between the endoscopic image and the probe observation image displayed on the monitor 50 can be adjusted by performing such dimming control. It is possible to achieve a balance by making them substantially equal.

According to the endoscope apparatus provided with the probe type observation apparatus of the present embodiment described above, the processing of the image signal captured by the first imaging unit 13 and the processing of the image signal captured by the second imaging unit 23 are performed. The single processor 40 can perform the switching operation by the observation switch 24. That is, it is not necessary to use a plurality of processors as in the prior art, and the number of processors can be reduced.
Furthermore, since it is not necessary to use a plurality of processors as in the prior art, the monitor 50 that is the output destination of the generated image can be used alone.
Therefore, the endoscope apparatus according to the present embodiment can achieve both the size reduction and the cost reduction.

  In the present embodiment, the observation changeover switch 24 is provided on the connection connector 23a. However, the present invention is not limited to this, and the observation changeover switch 24 may be provided on the operation unit 15 side (see reference numeral 24A in FIG. 1). In this case, since it can arrange | position in the location where operation parts, such as the said operation knob, are gathered, it becomes possible to acquire the effect that switching operation of the observation switch 24 is easy to perform. On the other hand, when it is provided on the side of the connection connector 23a as in the present embodiment, it is not necessary to modify the endoscope body 10, so that the effect that the existing endoscope body can be used as it is is obtained. Is possible.

In the present embodiment, the simultaneous optical system in which the illumination optical system 30 emits white light has been described. However, the present invention is not limited to this, and a frame sequential system shown in FIG. 3 may be employed.
That is, in the figure, reference numeral 35 denotes a rotating disk provided with red, green, and blue filters, reference numeral 36 denotes a rotation driving mechanism for rotating the rotating disk 35, and reference numeral 37 denotes a rotation disk. A direct drive mechanism that inserts or retracts the disk 35 between the lamp 31 and the condenser lens 33. Reference numeral 38 denotes a rotary filter that provides control signals to the rotary drive mechanism 36 and the direct drive mechanism 37. It is a control unit.
According to the surface sequential illumination optical system 30, when the rotation filter 35 is inserted between the lamp 31 and the condenser lens 33 and rotated in accordance with the control signal from the rotation filter control unit 38, the light of the three primary colors is obtained. Is intermittently incident on the rear end of the light guide 14b. On the other hand, when the rotary filter 35 is retracted from between the lamp 31 and the condenser lens 33, white light is continuously incident on the rear end of the light guide 14b.
In this way, it is possible to switch the type of light that illuminates the imaging range with the illumination means 14.

  In addition, although the probe type observation apparatus of the present embodiment includes a relay, for example, two CCDs may be simultaneously driven by one CCD driver circuit without a relay (see FIG. 4). In that case, a composite image of the image from the first imaging unit 13 and the image from the second imaging unit 23 is output to the monitor 50.

(Second Embodiment)
Subsequently, a second embodiment of the present invention will be described with reference to FIG. FIG. 5 is a diagram showing an endoscope apparatus provided with the probe-type observation apparatus of the present embodiment, and is an explanatory diagram for explaining main components.
As shown in the figure, the endoscope apparatus according to this embodiment includes an endoscope main body 110 that is inserted into a body cavity, and a probe-type observation that is inserted into a treatment instrument insertion hole 111 of the endoscope main body 110. The apparatus 120, an illumination optical system 130 serving as a light source for illuminating an imaging range of the endoscope main body 110 and the probe type observation apparatus 120, and an endoscope image signal (image signal) from the endoscope main body 110 are captured. The first processor 140A that performs image processing on this and outputs an endoscopic image (image signal) and the probe image signal from the probe-type observation device 120 are captured, and this is subjected to image processing to obtain a probe image (image signal). And a monitor that captures and displays a video signal (either an endoscope image or a probe image or both) from the second processor 140B. It is schematically configured by a display device) 150.

The endoscope main body 110 has substantially the same configuration as the endoscope main body 10 described in the first embodiment, and includes the insertion portion 12, the first imaging means (imaging optical system) 113, and the like. The illumination means 14 and the operation unit 15 are provided.
Similar to the treatment instrument insertion hole 11, the treatment instrument insertion hole 111 penetrates in the length direction of the insertion section 12 from the treatment instrument insertion port 111 a provided near the operation section 15 to the distal end of the insertion section 12. As described above, the endoscope body 110 is provided.

In the first imaging means 13 in the present embodiment, the signal cable 13b1 connected to the CCD 13b is drawn out to the operation part 15 through the insertion part 12, and further passes through the connection cable 116 to the inside of the first processor 140A. Connected to the CCD driver 141a.
In the present embodiment, the rear end of the light guide 14 b of the illuminating unit 14 is guided into the illumination optical system 130.
In addition to the operation knob and the like, the operation unit 15 in this embodiment includes an observation changeover switch 124 described later.

The probe-type observation device 120 includes a long and flexible insertion section (probe main body) 122 that can be bent flexibly, a second imaging means (high-magnification imaging optical system) 123 disposed at the distal end of the insertion section 122, and And a second processor 140B.
The insertion portion 122 can protrude and retract from the distal end surface 110a of the endoscope body 110, and the distal end surface can be brought into close contact with the body cavity surface X when projected from the distal end surface 110a. ing.

  The second image pickup means 123 is an image pickup means capable of picking up an image optically higher in magnification than the first image pickup means 13, and has a high magnification such as a high-power objective lens disposed at the distal end of the insertion portion 122. An optical system 123a and a charge coupled device (hereinafter referred to as CCD) 123b fixed at the imaging position are provided. A signal cable 123b1 is connected to the CCD 123b. The signal cable 123b1 passes through the insertion portion 122 in the longitudinal direction of the insertion portion 122 and is connected to the CCD driver 141b in the second processor 140B.

  The illumination optical system 130 has substantially the same configuration as the illumination optical system 30 described with reference to FIG. 3 as a modification of the first embodiment. Therefore, in the present embodiment, the same reference numerals as those shown in FIG. 3 are used, and the description thereof is omitted. According to the illumination optical system 130, the type of illumination light can be switched between the simultaneous type and the frame sequential type according to which of the CCD 13b and the CCD 123b is driven.

  The first processor 140A captures an endoscope image signal from the CCD driver 141a for the frame sequential type driving the CCD 13b and the CCD 13b, and performs signal processing on the endoscope image signal to generate an endoscope image. 142a and the video signal output from the second processor 140B toward the monitor 150 in accordance with the input from the observation changeover switch 124, an endoscopic image generated by the second processor 140B, or the first processor 140A. And a switching control unit 143 that provides a control signal to the second processor 140B so as to switch between the probe images generated in (1).

Then, switching means (second switching means) for selecting which of the endoscopic image and the probe image is output from the second processor 140B by the combination of the observation switch 124 and the switching control unit 143. It is composed. By this switching means, it is possible to operate which of the endoscopic image and the probe image is displayed on the monitor 50.
In addition, the switching control unit 143 that forms a part of the switching unit controls the illumination light according to which of the endoscopic image and the probe image is output from the second processor 140B to the illumination optical system 130. An illumination light switching signal for switching the type is transmitted.

  That is, when imaging is performed by the first imaging unit 13, this is transmitted to each of the lamp driving unit 32 and the filter control unit 38 through the illumination light switching signal. Then, the lamp driving unit 32 drives the lamp 31 so that the lamp 31 emits a light amount suitable for imaging by the first imaging unit 13. Further, the filter control unit 38 inserts the rotary filter 35 between the condenser lens 33 and the lamp 31 by the direct drive mechanism 37 and rotationally drives the rotary filter 35 by the rotary drive mechanism 36. Thereby, the light of three primary colors (R, G, B) is intermittently incident on the rear end of the light guide 14b with an appropriate amount of light.

  On the other hand, when imaging is performed by the second imaging unit 123, the illumination light switching signal is transmitted to each of the lamp driving unit 32 and the filter control unit 38 through the illumination light switching signal. Then, the lamp driving unit 32 drives the lamp 31 so that the lamp 31 emits light having a higher luminance than when the first imaging unit 13 captures an image. Further, the filter control unit 38 retracts the rotary filter 35 from between the condenser lens 33 and the lamp 31 by the direct drive mechanism 37. Thereby, white light is continuously incident on the rear end of the light guide 14b with an appropriate amount of light.

The second processor 140B includes the simultaneous CCD driver 141b that drives the CCD 123b, and a video signal circuit 142b that takes a probe image signal from the CCD 123b and performs signal processing on the probe image signal to generate a probe image. Yes.
The video signal circuit 142b receives a control signal from the switching control unit 143. The video signal output to the monitor 150 according to the content of the control signal is sent to the video signal circuit 142b. It is possible to switch between the probe image generated by itself and the endoscope image generated and sent by the first processor 140A.
Further, the video signal circuit 142b is adapted to transmit the received light amount level of the CCDs 13b and 123b to the lamp driving unit 32, and feedback for adjusting the light amount of the lamp 31 in accordance with the received light amount of the CCDs 13b and 123b. Control is also possible.

The operation of the endoscope apparatus of the present embodiment having the above-described configuration will be described below.
First, after inserting the insertion portion 122 of the probe type observation device 120 into the treatment instrument insertion hole 111 of the endoscope main body 110, the insertion portion 122 is inserted into the body cavity of the subject. In this state, the illumination optical system 130, the first processor 140A, and the second processor 140B are operated.

As a result, the first image pickup means 13 is driven by the CCD driver 141a and the second image pickup means 123 is driven by the CCD driver 141b. Then, the video signal circuit 142a generates an endoscopic image based on the image signal from the first imaging means 13, and transmits this to the video signal circuit 142b. In the video signal circuit 142b, a probe image is generated based on the image signal from the second imaging unit 123.
And the 1st imaging means 13, the 2nd imaging means 123, and the illumination means 14 are orient | assigned to a desired direction by operating the said operation knob provided in the operation part 15 of the endoscope main body 110. FIG. Further, by operating the observation changeover switch 124, it is selected which of the first imaging unit 13 and the second imaging unit 123 is used for imaging.

When the observation changeover switch 124 is operated so as to take an image with the first imaging means 13, a signal from the observation changeover switch 124 is input to the change control unit 143. Then, the switching control unit 143 transmits a control signal to each of the video signal circuit 142b and the lamp driving unit 32.
The filter control unit 38 that has received this control signal inserts and rotates the rotary filter 35 between the condenser lens 33 and the lamp 31. Further, the lamp driving unit 32 that has received the control signal adjusts the amount of light emitted from the lamp 31. Thereby, the light of three primary colors (R, G, B) is intermittently incident on the rear end of the light guide 14b with an appropriate amount of light. Further, as necessary, the amount of light emitted from the lamp 31 is more appropriately adjusted by performing feedback control from the video signal circuit 142b. And the RGB intermittent light radiate | emitted from the front-end | tip of the light guide 14b illuminates the imaging range of the body cavity surface X through the illumination lens 14a.
On the other hand, the video signal circuit 142b that has received the control signal transmits the endoscope image generated by the first processor 140A to the monitor 150 as it is, instead of the probe image generated by itself. Thereby, an endoscopic image is displayed on the monitor 150.

When the observation changeover switch 124 is operated so as to take an image with the second image pickup means 123, a signal from the observation changeover switch 124 is input to the change control unit 143. Then, the switching control unit 143 transmits a control signal to each of the video signal circuit 142b and the lamp driving unit 32.
The filter control unit 38 that has received this control signal retracts the rotary filter 35 from between the condenser lens 33 and the lamp 31. In addition, the lamp driving unit 32 that has received the control signal performs adjustment to increase the amount of light emitted from the lamp 31. Thereby, white light is continuously incident on the rear end of the light guide 14b with an appropriate amount of light. Further, as necessary, the amount of light emitted from the lamp 31 is more appropriately adjusted by feedback control from the video signal circuit 142b. And the white light radiate | emitted from the front-end | tip of the light guide 14b illuminates the imaging range of the body cavity surface X through the illumination lens 14a.
On the other hand, the video signal circuit 142b that has received the control signal transmits the probe image generated by itself to the monitor 150 instead of the endoscopic image generated by the first processor 140A. Thereby, the probe image is displayed on the monitor 150.

  According to the endoscope apparatus provided with the probe-type observation apparatus of the present embodiment described above, the output of the endoscope image and the output of the probe image are switched to a single second by switching the observation switch 124. This can be done from the processor 140B. Accordingly, since the output source of the generated image signal is not a plurality of sources (not directly output from each of the first processor 140A and the second processor 140B to the individual monitors) as in the conventional case, the output of the generated image signal is not performed. A single monitor 150 is sufficient. Furthermore, since the illumination optical system 130 is a single unit, it is possible to achieve both reduction in size and cost of the endoscope apparatus.

In the present embodiment, the observation changeover switch 24 is provided in the operation unit 15, but the present invention is not limited thereto, and may be provided on the second processor 140B side (see reference numeral 124A in FIG. 5). In this case, since it is not necessary to modify the endoscope main body 110, it is possible to obtain an effect that the existing endoscope main body can be used as it is. On the other hand, when it is provided on the operation unit 15 side as in the present embodiment, it can be arranged at a place where operation parts such as the operation knob are gathered, so that the observation changeover switch 124 can be easily switched. An effect can be obtained.
In the present embodiment, either one of the endoscopic image and the probe image is displayed on the monitor 150. However, the present invention is not limited to this, and one of the images is a large screen and the other is a small screen. The switching control unit 143 may be configured to send a control signal to the video signal circuit 142b so as to be displayed in an overlapping manner.
In the second embodiment, the endoscope main body 110 is a frame sequential method and the probe-type observation device 120 is a homogeneous method. However, the present invention is not limited to this, and vice versa. A simultaneous method or a frame sequential method may be used.

In the first embodiment and the second embodiment, normal light such as white light or RGB intermittent light is illuminated on the imaging range. However, the present invention is not limited to this, and the special light is illuminated on the imaging range. It can also be adopted.
That is, for example, in the case of performing fluorescence observation, blue light for fluorescence observation is irradiated to a site where a lesion is suspected, and the brightness of the emitted fluorescence is observed. More specifically, first, narrow band illumination is performed by the illumination optical system 30 (130), and at the same time, observation by the first imaging unit 13 is performed. While observing the endoscopic image displayed on the monitor 50 (150), it is determined whether this observation site is malignant or benign. As a result, if it is benign, follow-up is performed.
On the other hand, if there is a suspicion of malignancy, the observation is switched to observation by the second imaging means 23 (123), and this observation site is confirmed while observing at the cell level. As a result, if it is benign, follow-up is performed, and if it is malignant, treatment is performed.

  Moreover, in the said 1st Embodiment and 2nd Embodiment, although the said illumination means 14 was single-piece | unit, for example, as shown in FIG. 6, you may provide two (plural). That is, in addition to the illuminating means 14, another annular illuminating means 14B that covers the periphery of the second imaging means 13 in a ring shape is provided, and these illuminating means 14 and 14B are combined into one on the way and the illumination optical system 30 (130) may be connected. In this case, the endoscope main body and the probe type observation device may be configured integrally.

Note that since the imaging target is a living body, the observation site is pulsated. For example, by attaching a cap 200 as shown in FIG. Disturbance can be suppressed. The cap 200 is a cylindrical body made of a soft material. When the cap 200 is attached to the insertion portion 12, the protruding dimension x from the distal end surface 10a substantially matches the protruding dimension of the insertion portion 22 (122). It has become. The protruding portion of the cap 200 can suppress pulsation by pressing the mucous membrane during observation.
The projection dimension x and the inner diameter of the cap 200 are preferably designed so that they do not appear in the field of view of the endoscope 13.

Further, for example, a configuration as shown in FIGS. 8A and 8B is applied to the first embodiment and the second embodiment so that it is possible to grasp which observation site is being observed during observation. You may do it. That is, as shown in FIG. 8A, a plurality of magnetic field generating coils 201 are arranged in each position in the length direction in the insertion portion 22 (122) of the probe type observation apparatus 20.
Then, at the time of observation, by applying a detector that detects the position of each magnetic field generating coil 201 from the outside of the body (living body), for example, as shown in FIG. 8B, the insertion portion 22 (122) is detected. The shape and the position of the CCD 23b (123b) can be displayed on the monitor 50.

It is a figure which shows 1st Embodiment of the endoscope apparatus provided with the probe type observation apparatus of this invention, Comprising: It is explanatory drawing for demonstrating a main component. It is a graph for demonstrating light quantity control of the illumination optical system of the same endoscope apparatus, a horizontal axis shows time and the vertical axis | shaft has shown the lamp light quantity drive voltage. It is a figure which shows the modification of the same endoscope apparatus, Comprising: It is a figure which shows the part corresponded to the A section of FIG. It is a figure which shows the other modification of the same endoscope apparatus, Comprising: It is a figure corresponded in FIG. It is a figure which shows 2nd Embodiment of the endoscope apparatus provided with the probe type observation apparatus of this invention, Comprising: It is explanatory drawing for demonstrating a main component. It is a figure which shows the modification of 1st Embodiment or 2nd Embodiment of the endoscope apparatus of this invention, Comprising: It is the figure which looked at the front end surface of the endoscope main body facing. It is a figure which shows the other modification of 1st Embodiment or 2nd Embodiment of the endoscope apparatus of this invention, Comprising: Sectional drawing at the time of seeing the front-end | tip part of an endoscope main body in the cross section containing the axis line It is. It is a figure which shows the other modification of 1st Embodiment or 2nd Embodiment of the endoscope apparatus of this invention, Comprising: (a) saw the probe main body of the probe type observation apparatus in the cross section containing the axis line (B) is a screen of the display device showing the position information of the probe main body.

Explanation of symbols

10, 110 ... endoscope body 11, 111 ... treatment instrument insertion hole 13 ... first imaging means (imaging optical system)
20, 120... Probe type observation device 21... Relay circuit (first switching means)
22, 122 ... Insertion part (probe body)
23, 123 ... second imaging means (high magnification imaging optical system)
24 ... Observation switch (first switching means)
30, 130 ... Illumination optical system 40 ... Processor (first processor)
43... Switching control unit (first switching means)
124 ... Observation switch (second switching means)
140B ... 2nd processor (2nd processor)
143... Switching control unit (second switching means)

Claims (3)

A probe body inserted through a treatment instrument insertion hole of an endoscope body having an imaging optical system at the tip;
A high-magnification imaging optical system that is provided on the distal end side of the probe main body and can capture an image with a higher magnification than the imaging optical system;
A first processor that is provided on the rear end side of the probe main body and that inputs an image signal from the imaging optical system or an image signal from the high-magnification imaging optical system to generate an image;
First switching means for selecting which of the image signals to be input to the first processor ;
The first switching unit may be configured such that when the high-magnification imaging optical system is selected and driven with respect to the illumination optical system that illuminates the imaging target, the illumination optical system is selected more than when the imaging optical system is selected and driven. A probe-type observation apparatus that transmits a dimming signal for increasing luminance . A probe body inserted through a treatment instrument insertion hole of an endoscope body having an imaging optical system at the tip;
A high-magnification imaging optical system that is provided on the distal end side of the probe main body and can capture an image with a higher magnification than the imaging optical system;
A second processor provided on the rear end side of the probe main body for generating an image by inputting an image signal from the high-magnification imaging optical system and inputting an image based on the image signal from the imaging optical system; ,
Second switching means for selecting which of the images from the second processor to output .
The second switching means outputs an illumination light switching signal for switching the type of illumination light according to which of the images is output from the second processor to the illumination optical system that illuminates the imaging target. A probe-type observation apparatus transmitting to the illumination optical system . An endoscope body having an imaging optical system at the tip, and a probe-type observation device having a high-magnification imaging optical system capable of capturing an image with a higher magnification than the imaging optical system;
An endoscope apparatus comprising the probe-type observation apparatus according to claim 1 or 2 as the probe-type observation apparatus.

Images