JP2017000378A - Endoscope device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an endoscope device including configuration capable of easily visualizing a position of a suction port on a display part and allowing a suction object in an analyte to approach the suction port and thereby performing reliable suction even if the endoscope device has a structure that a subject image acquisition part acquiring a subject image in the analyte in a wide angle and the suction port are positioned while separated in a longitudinal direction from each other and the position of the suction port cannot be observed for arranging an illumination window out of a field of view.SOLUTION: An endoscope device includes: an insertion part; a projection part; a subject image acquisition part acquiring a subject image from a predetermined area in an analyte containing a peripheral direction of the projection part; an illumination window arranged on a peripheral side face of the projection part so as to be positioned out of a field of view of the subject image acquisition part on a rear side of the subject image acquisition part and emitting illumination light illuminating an area of the analyte; a suction port arranged out of the field of view of the subject image acquisition part at least partially on the rear side of the subject image acquisition part; and an image generation part generating an image 82 based on the subject image and an index 50 indicating a direction in which the suction port is positioned to be displayed on a display part.SELECTED DRAWING: Figure 6

Description

  The present invention relates to an endoscope apparatus including an image generation unit that generates an image based on a subject image acquired from within a subject and displays the image on a display unit.

  In recent years, endoscopes are widely used in the medical field and the industrial field. The endoscope can observe the inside of the subject by inserting an elongated insertion portion into the subject.

  As an endoscope, an observation lens or illumination is provided on the distal end surface of the distal end portion provided on the distal end side (hereinafter simply referred to as the distal end side) of the insertion portion in the longitudinal direction (hereinafter simply referred to as the longitudinal direction). A known direct-view type endoscope provided with an observation lens, or a known side-view type endoscope provided with an observation lens or illumination lens on a part of the outer peripheral side surface of the distal end portion of the insertion portion. It is well known.

  Further, Patent Document 1 discloses a field in a radial direction, that is, a lateral region of the distal end portion in the insertion portion of the endoscope and a region in the longitudinal direction in the insertion portion of the endoscope (hereinafter simply referred to as the front). An endoscope system is disclosed that expands the observation range in a subject by simultaneously observing the visual field with a display unit.

  The endoscope apparatus disclosed in Patent Document 1 has a protruding portion that protrudes forward from the distal end surface of the distal end portion of the insertion portion of the endoscope, and is longer in the longitudinal direction than the front observation lens in the protruding portion. A peripheral direction observation lens that is a subject image acquisition unit that acquires a subject image located in a region in the peripheral direction on the side of the outer peripheral side surface of the protruding portion is provided (hereinafter simply referred to as the rear).

  In addition, a front observation lens that is another subject image acquisition unit that acquires another subject image located in a region in front of the projection surface is provided so as to face the projection surface of the projection portion in the projection portion. .

  Furthermore, a lens group is located behind the peripheral direction observation lens in the distal end portion, and an imaging unit such as a CCD is located at the condensing position of the lens group.

  Therefore, in the endoscope apparatus disclosed in Patent Document 1, a subject in another region positioned in front of the distal end surface of the distal end portion of the insertion portion is acquired as another subject image by the front observation lens. The light incident on the front observation lens passes through the peripheral direction observation lens and is imaged on the imaging surface of the imaging unit by the rear lens group. In addition, a subject in a predetermined region positioned in the peripheral direction of the protruding portion is acquired as a subject image by the peripheral direction observation lens, and light incident on the peripheral direction observation lens is reflected in the lens. After that, the rear lens group forms an image on the imaging surface of the imaging unit.

  Note that, on the display unit of the endoscope apparatus, the subject image ahead of the projecting surface is displayed in a substantially circular shape by the image generating unit electrically connected to the imaging unit, and the subject image on the side of the projecting surface is displayed. It is displayed in a substantially annular shape so as to surround the outer periphery of the subject image ahead of the protruding surface.

  Thus, the operator can simultaneously observe the visual field in the peripheral direction of the distal end portion of the insertion portion and the visual field in front of the distal end surface of the distal end portion from the display unit. That is, a wide range of observation can be performed in the subject.

Patent International Publication No. WO2011 / 055641

  By the way, the distal end surface of the distal end portion of the insertion portion in a general direct-view type endoscope has a distal end opening of an aspiration channel for aspirating an object to be aspirated such as a body fluid in the subject or a cleaning liquid supplied into the subject. The suction port is located.

  Also in the endoscope apparatus described in Patent Document 1 described above, the suction port is located on the distal end surface of the distal end portion of the insertion portion of the endoscope.

  Here, in a general direct-view endoscope, an observation lens and the like are positioned on the distal end surface as described above in addition to the suction port. Therefore, the suction port is provided on the same surface as the observation lens on the front end surface, and is located close to the observation lens.

  Therefore, the operator can perform suction within the observation range of the observation lens in the subject even if the suction port located outside the observation range of the observation lens is not displayed on the display unit and the position of the suction port is unknown. By bringing the observation lens closer to the object to be sucked, as a result, the object to be sucked comes close to the suction port, so that the suction operation of the object to be sucked can be reliably performed.

  However, in an endoscope having a configuration as disclosed in Patent Document 1 and capable of wide-range observation, as described above, the observation lens for observing the inside of the subject is not provided on the same plane as the suction port. First, the suction port provided on the distal end surface of the insertion portion is located farther rearward than each observation lens.

Furthermore, in the endoscope configured as disclosed in Patent Document 1, an illumination window that illuminates a region in the peripheral direction of the protrusion is provided behind the side observation lens in the protrusion. If the image of the illumination unit enters the observation region, it causes halation.
Therefore, in the endoscope having the configuration disclosed in Patent Document 1, the field of view is set so that the illumination window is out of the field of view, that is, the blind spot with respect to the side observation region.
When the field of view of the side observation lens is set as described above, the suction port provided on the distal end surface of the insertion portion is positioned outside the field of view.

  Therefore, when the operator sucks the suction object in each observation range of the front observation lens and the peripheral direction observation lens from the suction port, the operator is positioned outside the observation range of the front observation lens and the peripheral direction observation lens. If the suction port to be displayed is not displayed on the display unit and the position of the suction port is unknown, as described above, the suction port is located behind the front observation lens and the peripheral direction observation lens in the longitudinal direction. For this reason, there is a case where the suction target object cannot be reliably performed by the proximity of the front observation lens or the peripheral direction observation lens close to the suction target, because the suction target does not come close to the suction port. There was a problem.

  The present invention has been made in view of the above problems, and a subject image acquisition unit that acquires a wide-angle subject image from the inside of a subject and a suction port are located apart from each other in the longitudinal direction, and the illumination window is out of the field of view. Therefore, even if the position of the suction port cannot be observed, the position of the suction port can be easily seen from the display unit, and the suction target in the subject can be reliably sucked close to the suction port. An object of the present invention is to provide an endoscopic device provided.

  In order to achieve the above object, an endoscope apparatus according to an aspect of the present invention includes an insertion portion that is inserted into a subject, and protrudes forward in the longitudinal direction from a distal end surface of the insertion portion in the longitudinal direction. A columnar protruding portion provided; a subject image acquiring portion that is provided on a peripheral side surface of the protruding portion and acquires a subject image from a predetermined region in the subject including a circumferential direction of the protruding portion; and the protruding portion An illumination window that is provided outside the field of view of the subject image acquisition unit behind the subject image acquisition unit and emits illumination light that illuminates the region of the subject; A suction port at least a part of which is located outside the field of view of the subject image acquisition unit behind the subject image acquisition unit in the longitudinal direction, an image based on the subject image, and a direction in which the suction port is located. Generate and display metrics Comprising an image generator for displaying, to.

  According to the present invention, the subject image acquisition unit that acquires a wide-angle subject image from within the subject and the suction port are located apart in the longitudinal direction, and the position of the suction port cannot be observed because the illumination window is out of the field of view. Provided is an endoscope apparatus having a configuration in which the position of the suction port can be easily visually recognized from the display unit even if the structure is configured, and the suction target in the subject can be reliably sucked close to the suction port. be able to.

The perspective view which shows roughly an example of the endoscope apparatus which shows 1st Embodiment The partial perspective view which expands and shows the front-end | tip part of FIG. The top view which looked at the front-end | tip part of FIG. 2 from the III direction in FIG. The figure which shows schematically the structure in the front-end | tip part and protrusion part of FIG. The figure which shows the state in which the 1st subject image and the 2nd subject image were displayed on the monitor of FIG. The figure which shows an example comprised from the display which the parameter | index displayed on the monitor of FIG. 5 shows the suckable range of a suction object The figure which shows an example comprised from the display in which the parameter | index displayed on the monitor of FIG. 5 shows the position of a suction port. The figure which shows an example comprised from the display which the direction displayed of the parameter | index displayed on the monitor of FIG. The figure which shows an example comprised from the display by which the parameter | index displayed on the monitor of FIG. 5 was united with the mask. The fragmentary perspective view which expands and shows the front-end | tip part of the insertion part of the endoscope in the endoscope apparatus of 2nd Embodiment. FIG. 10 is a diagram illustrating a state in which a part of the suction port is displayed together with the first subject image and the second subject image on the monitor of the endoscope apparatus of FIG. 10. The fragmentary perspective view which shows the modification in which the protrusion which protrudes ahead was provided in the circumference | surroundings of the suction opening in the front end surface of the front-end | tip part of FIG. FIG. 12 is a diagram showing a state in which the projections of FIG. 12 are displayed together with the first subject image and the second subject image on the monitor of the endoscope apparatus of FIG. The figure which shows the modification by which the parameter | index was superimposed and displayed also on the 1st to-be-photographed image displayed on the monitor of an endoscope apparatus. The figure which shows an example in which the parameter | index displayed on the monitor of FIG. 5 is comprised from the pseudo image which shows the shape of a part of suction port with respect to the part in which the mask process was performed. 10 is a diagram showing a modification in which the index itself is superimposed and displayed on the first subject image as the direction in which the suction port is located on the monitor of the endoscope apparatus of FIG.

Embodiments of the present invention will be described below with reference to the drawings.
(First embodiment)
FIG. 1 is a perspective view schematically showing an example of an endoscope apparatus showing the present embodiment.
As shown in FIG. 1, the endoscope apparatus 1 includes an endoscope 2 and a peripheral device 100.

  The endoscope 2 includes an insertion portion 4 to be inserted into a subject, an operation portion 3 connected to a proximal end in the longitudinal direction N of the insertion portion 4 (hereinafter simply referred to as a proximal end), and the operation The main part is configured by including a universal cord 5 extending from the portion 3 and a connector 32 provided at an extended end of the universal cord 5.

  The peripheral device 100 electrically connects the keyboard 31, the light source device 33, the video processor 34 that is an image signal generation unit (image generation unit), the light source device 33, and the video processor 34 that are mounted on the gantry 30. A connection cable 35 to be connected and a monitor 36 as a display unit are provided.

  Further, the endoscope 2 and the peripheral device 100 having such a configuration are connected to each other by a connector 32.

  The connector 32 is connected to the light source device 33 of the peripheral device 100, for example. A base (not shown) in which a proximal end of a treatment instrument insertion channel (hereinafter simply referred to as a channel) also serving as a suction channel (not shown) provided in the insertion portion 4, the operation portion 3, and the universal cord 5 is connected to the connector 32. Etc. are provided.

  The insertion portion 4 of the endoscope 2 includes a distal end portion 6 positioned on the distal end side of the insertion portion 4, a bending portion 7 connected to the proximal end of the distal end portion 6, and a proximal end of the bending portion 7. It is comprised by the flexible tube part 8 provided continuously.

  The bending portion 7 is operated to bend in four directions, for example, up, down, left, and right by a bending operation knob 9 provided in the operation unit 3.

  The operation unit 3 is provided with a treatment instrument insertion port 3s for communicating with the above-described channel and for inserting various treatment instruments into the channel.

  Further, a suction device is connected to the operation unit 3 to the above-mentioned channel cap provided on the connector 32, and the suction target in the subject is sucked through the suction port 17 (see FIG. 2), which will be described later, and the channel. A suction button 3b that is operated at the time is provided.

  Next, the structure of the front-end | tip part 6 is demonstrated using FIGS. 2 is an enlarged partial perspective view of the tip portion of FIG. 1, FIG. 3 is a plan view of the tip portion of FIG. 2 viewed from the direction III in FIG. 2, and FIG. 4 is a tip portion of FIG. FIG. 5 is a diagram schematically showing the internal configuration, and FIG. 5 is a diagram showing a state in which the first subject image and the second subject image are displayed on the monitor of FIG.

  As shown in FIG. 2, a protruding portion 10 that protrudes forward from the tip surface 6 s is provided on the tip surface 6 s of the tip portion 6.

The projecting portion 10 includes a columnar cylindrical portion and a support portion 18 adjacent to the cylindrical portion in the radial direction K.
A columnar shape is a shape obtained by extending a shape such as a letter D in which a part of a cylinder or a circle is cut in the longitudinal direction N, a shape obtained by stretching a combination of a polygon and a circle in the longitudinal direction N, and a cone shape. Various shapes such as a shape obtained by removing the front end portion of the cylindrical portion 11 are included.

  As shown in FIGS. 2 to 4, the cylindrical portion 11 is exposed circumferentially along the outer peripheral side surface 11 g of the cylindrical portion 11, and the cylindrical portion from the radial direction K that intersects the longitudinal direction N. 11 is a side subject image acquisition unit (second subject image acquisition unit, hereinafter referred to as a peripheral direction) that acquires a subject image 82 (see FIG. 5) from a predetermined region in the subject including 11 sides. (Referred to as an observation lens) 13 is provided.

  The subject image 82 is a subject image (second subject image) of a second subject located in the circumferential direction (second region that is a predetermined region) that is the radial direction K of the cylindrical portion 11.

  Moreover, as shown in FIGS. 2-4, in the cylindrical part 11, another area | region (1st area | region) different from the 2nd area | region in the subject containing the front rather than the protrusion surface 11s of the cylindrical part 11 is shown. The other subject image acquisition unit (first subject image acquisition unit; hereinafter referred to as a front observation lens) 12 which is a front image acquisition unit that acquires another subject image 81 (see FIG. 5) from the protruding surface 11s. It is provided to be exposed.

  The other subject image 81 is a subject image (first subject image) of the first subject located in the first region including the front side of the protruding surface 11s.

  That is, the endoscope 2 according to the present embodiment has a wide-angle visual field that can acquire the peripheral visual field observed by the peripheral observation lens 13 and the forward visual field observed by the front observation lens 12.

  In the cylindrical portion 11, as shown in FIG. 4, the peripheral direction observation lens 13 is located behind the front observation lens 12.

  Also, in the cylindrical portion 11, as shown in FIG. 4, a rear lens group 40 composed of a plurality of lenses is provided behind the peripheral direction observation lens 13, and the rear lens group 40 is connected. An imaging unit 41 such as a CCD having an imaging surface 41s is provided at the image position.

  The imaging unit 41 is arranged to photoelectrically convert the subject image 82 acquired by the peripheral direction observation lens 13 and the subject image 81 acquired by the front observation lens 12 on the same imaging surface 41s. It is electrically connected to the video processor 34 by a signal line that is not connected.

  Incidentally, the light incident configuration of the first subject through the front observation lens 12, the surrounding direction observation lens 13, and the rear lens group 40 on the imaging surface 41 s of the imaging unit 41, the surrounding direction observation lens 13, and the rear lens Since the light incident configuration of the second subject via the group 40 is well known, detailed description thereof will be omitted.

  In addition, the subject image 82 and the subject image 81 captured by the imaging unit 41 are generated as image signals (images) by the video processor 34.

  Specifically, after being output to the monitor 36, as shown in FIG. 5, a subject image 81 is displayed in a substantially circular shape at the center of the monitor 36, and the subject image 82 surrounds the periphery of the subject image 81. The video processor 34 generates an image signal so that the image signal is displayed in a substantially annular shape.

  Note that when the video processor 34 generates an image signal for displaying the subject image 82 and the subject image 81 on the monitor 36, the subject image 82 and the subject image 81 are displayed so that the subject image 82 and the subject image 81 are continuously displayed. Boundary processing for removing each overlapping region at the boundary with 81 is performed.

As shown in FIGS. 2 and 3, illumination light is supplied (emitted) in the radial direction K on the outer peripheral side surface 11 g of the cylindrical portion 11 of the projecting portion 10 to illuminate a region observed by the peripheral direction observation lens 13. Illumination lenses 24 and 25 that are illumination windows are provided.
As shown in FIG. 3, two illumination lenses 24 and 25 are provided behind the circumferential direction observation lens 13 in the longitudinal direction N of the insertion portion 4, for example, by being shifted by approximately 180 ° in the circumferential direction C.
The number of illumination lenses is not limited to two as long as it is provided on the outer peripheral side surface 11g so as to surround the periphery of the cylindrical portion 11. Even if three or more illumination lenses are provided, an annular portion is provided. One illumination lens having the above may be provided.

  As shown in FIG. 4, each illumination lens 24, 25 is inserted into the insertion portion 4, the operation portion 3, the universal cord 5, and the connector 32, and a light guide 55 into which illumination light is introduced from the light source device 33. Illumination light is supplied from.

Further, an illumination lens 15 that supplies (emits) illumination light ahead of the projection surface 18s is provided on the projection surface 18s. Illumination light is supplied from the light guide 55 to the illumination lens 15.
Furthermore, an illumination lens 16 that supplies (emits) illumination light forward of the front end surface 6s may be provided on the front end surface 6s. Illumination light is supplied from the light guide 55 to the illumination lens 16.

  For example, two peripheral observation window nozzles 22 for supplying fluid toward the peripheral direction observation lens 13 are provided on the outer peripheral side surface 18 g of the support portion 18. The number of surrounding observation window nozzles 22 is not limited to two.

  Further, as shown in FIGS. 2 and 3, a direct-view observation window nozzle portion 19 that supplies fluid toward the front observation lens 12 is provided on the projecting surface 18 s of the support portion 18.

  The support 18 is included in the observation range Q (see FIG. 4) of the circumferential observation lens 13 having a circumferential shape. Therefore, a part of the image of the support unit 18 is displayed on the subject image 82 on the monitor 36, but the video processor 34 covers the portion of the image of the subject image 82 where the image of the support unit 18 appears. Hide masking. As a result, as shown in FIG. 5, the mask M is displayed in a substantially trapezoidal shape, for example, on the monitor 36 where the support unit 18 is displayed with respect to the subject image 82.

  Further, a suction port 17 is formed on the distal end surface 6s of the distal end portion 6 to be the distal end in the longitudinal direction N of the channel (hereinafter simply referred to as the distal end).

As described above, the illumination lenses 24 and 25 that supply illumination light in the outer circumferential direction of the cylindrical portion 11, that is, in the radial direction K of the cylindrical portion 11, are more on the outer circumferential side surface 11 g of the cylindrical portion 11 than the peripheral direction observation lens 13. It is provided in the rear.
However, halation may occur if the images of the illumination lenses 24 and 25 enter the subject image 82 acquired by the side subject image acquisition unit, that is, the observation range Q (within the visual field) of the peripheral direction observation lens 13. Therefore, the visual field range Q of the peripheral direction observation lens 13 is set so that the illumination lenses 24 and 25 are excluded from the range that can be observed by the side subject image acquisition unit.
As shown in FIG. 2, the suction port 17 is located behind the peripheral direction observation lens 13 and the front observation lens 12, so that the illumination lenses 24 and 25 of the illumination direction 24 are viewed from the peripheral direction observation lens 13. The illumination light is arranged in a range that affects the visual field in the peripheral direction of the cylindrical portion 11.
Therefore, the suction port 17 is not displayed on the monitor 36 as shown in FIG. 5 because it is located outside the field of view of the peripheral direction observation lens 13 (outside the observation range Q).

  Here, the video processor 34 has a function of generating not only an image signal based on the subject image 82 and the subject image 81 but also an index 50 indicating the direction in which the suction port 17 is located and displaying it on the monitor 36.

  Specifically, the video processor 34 has a function of superimposing and displaying the index 50 on the image signal of the subject image 82 on the monitor 36.

  Next, examples of indices displayed on the monitor of FIG. 5 will be described with reference to FIGS. FIG. 6 is a diagram showing an example in which the index displayed on the monitor of FIG. 5 is composed of a display showing the suctionable range of the suction target object, and FIG. 7 is a diagram showing that the index displayed on the monitor of FIG. The figure which shows an example comprised from the display which shows a position, FIG. 8 is the figure which shows an example comprised from the display which shows the direction of the suction | inhalation target object by which the parameter | index displayed on the monitor of FIG. FIG. 9 is a diagram showing an example in which the indicator displayed on the monitor of FIG. 5 is composed of a display integrated with the mask.

As shown in FIG. 6, the index 50 displayed on the monitor 36 is an object to be sucked by the video processor 34 in the direction in which the suction port 17 is located in the subject image 82, specifically, in the position adjacent to the mask M. May be displayed as a suckable range H, or may be displayed as an arrow Y indicating the position of the suction port 17 as shown in FIG.
FIG. 15 is a diagram illustrating an example in which the index displayed on the monitor in FIG. 5 is configured from a pseudo image showing a shape of a part of the suction port with respect to a portion where the mask process is performed.
The index 50 may be formed in a shape that the mask M itself simulates the suction port 17 by cutting out the mask M by the video processor 34. As shown in FIG. For example, the video processor 34 may superimpose various indexes 50 such as a simulated shape X representing a partial shape of the suction port 17 on the portion subjected to the above processing.

In addition, the index 50 is sent from the suction port 17 to the direction in which the suction port 17 is located in the subject image 82 on the monitor 36, specifically, to a position adjacent to the mask M as shown in FIG. You may make it show the direction of the suction | inhalation target object attracted | sucked.
That is, the index 50 may be displayed as, for example, an arrow Z that indicates the flow of the suction object to the suction port 17.
Further, as shown in FIG. 9, the index 50 may be formed integrally with the mask M and displayed as a part of the mask M by the video processor 34.

  That is, the index 50 is not limited to the display shown in FIGS. 6 to 9 and 15 as long as it allows the operator to visually recognize the position of the suction port 17, and any display may be used.

  The index 50 may be always displayed on the monitor 36. A switch sensor (not shown) is provided in the operation unit 3, and an index display switch (not shown) provided on the operation unit 3 is pressed by the operator. Only when the switch is pressed, the switch sensor may detect the pressing and transmit the pressing signal to the video processor 34.

  In addition, since the index 50 is provided with a switch sensor (not shown) in the operation unit 3, the switch sensor detects the pressing and transmits a pressing signal to the video processor 34 only when the suction button 3 b is pressed by the operator. May be displayed by being operated, or may be displayed by the operation of the foot switch by the operator.

  Further, only when the pressure sensor is provided in the channel and the pressure sensor detects the suction of the suction object in the subject through the channel by the suction port 17 after the suction button 3b is pressed, the pressure signal is transmitted to the video processor 34. The index 50 may be displayed by being transmitted.

  If the index 50 is unnecessary by the operator, the video processor 34 may be configured to remove the index 50 from the monitor 36 by pressing the display switch provided in the operation unit 3. .

  Thus, in the present embodiment, the video processor 34 displays at least the image signal of the subject image 82 from the peripheral direction observation lens 13 on the monitor 36 and is behind the peripheral direction observation lens 13. The field of view of the peripheral direction observation lens 13 is located in a range that affects the field of view of the peripheral direction of the cylindrical portion 11 by the illumination light of the illumination lenses 24 and 25 when viewed from the peripheral direction observation lens 13. It is indicated that an index 50 indicating the position of the suction port 17 located outside (outside the observation range Q) is displayed.

  According to this, the peripheral direction observation lens 13 (and the front observation lens 12) has a structure in which the position of the suction port 17 cannot be observed by the peripheral direction observation lens 13 in order to make the illumination window out of the field of view. In addition, the operator can easily visually recognize the position of the suction port 17 from the index 50 displayed on the monitor 36.

  Therefore, the operator can easily bring the aspiration object in the subject close to the aspiration port 17 based on the index 50 displayed on the monitor 36 by operating the insertion unit 4. Therefore, the suction object can be sucked reliably and easily.

  Note that the operator holds the operation unit 3 when the suction object passes through a portion located in the operation unit 3 in the channel that the suction object is sucked through the suction port 17 described above. It can be easily recognized by transmitting vibration to the operator's hand, vibration of the tube connecting the connector 23 and the suction device, and visually confirming passage of the suction object in the tube. Further, the suction state of the suction object may be displayed on the monitor 36.

  Further, not only when the aspiration object is aspirated, but also when the treatment site is treated by causing a treatment tool or the like to protrude into the subject through the aspiration port 17, the operator positions the aspiration port 17. If it is known, since the distance between the suction port 17 and the test site can be recognized, the treatment tool or the like projected from the suction port 17 can be easily brought close to the test site, and the treatment performance is improved.

  As described above, the position of the suction port 17 is monitored 36 even when the position of the suction port 17 cannot be observed in the peripheral direction observation lens 13 (and the front observation lens 12) that acquires the subject image from within the subject. Therefore, it is possible to provide an endoscope apparatus 1 that has a configuration that can be easily visually recognized and can reliably aspirate an aspiration object in a subject close to the aspiration port 17.

(Second Embodiment)
FIG. 10 is a partial perspective view showing an enlarged distal end portion of the insertion portion of the endoscope in the endoscope apparatus of the present embodiment. FIG. 11 is a diagram showing a first example of the monitor of the endoscope apparatus shown in FIG. It is a figure which shows the state by which a part of suction port was displayed with the to-be-photographed image and the 2nd to-be-photographed image.

  Compared with the endoscope apparatus of the first embodiment shown in FIGS. 1 to 9 described above, the configuration of the endoscope apparatus of the second embodiment has a part of the suction port for observation in the peripheral direction. The difference is that it is provided at a position included in the observation range of the lens.

  Therefore, only this difference will be described, the same reference numerals are given to the same components as those in the first embodiment, and the description thereof will be omitted.

  As shown in FIG. 10, in the present embodiment, the suction port 17 is arranged in a region where a part of the suction port 17 is blocked from the observation range Q of the peripheral direction observation lens 13 on the distal end surface 6 s.

  Specifically, a part 6d of the entire front end surface 6s formed with the suction port 17 protrudes forward so as to be physically included in at least the observation range Q of the peripheral direction observation lens 13. The processor 34 generates a part 6d in which the suction port 17 is formed as an index 50 and displays it on the monitor 36 as shown in FIG. Other configurations are the same as those in the first embodiment described above.

  According to such a configuration, the operator can easily visually recognize the position of the suction port 17 from the part 6d where the suction port 17 displayed on the monitor 36 is formed. The same effect as that of the embodiment can be obtained.

  Hereinafter, a modification will be described with reference to FIGS. 12 is a partial perspective view showing a modification in which a protrusion protruding forward is provided around the suction port on the distal end surface of the distal end portion of FIG. 10, and FIG. 13 is a monitor of the endoscope apparatus of FIG. FIG. 13 is a diagram showing a state in which the protrusions of FIG. 12 are displayed together with the first subject image and the second subject image.

  As in the present embodiment described above, a part 6d formed with the suction port 17 on the front end surface 6s does not protrude forward so as to be included in the observation range Q of the peripheral direction observation lens 13, but is shown in FIG. As shown, a protrusion 70 is provided on the distal end surface 6 s so as to protrude forward around the suction port 17 and is included in the observation range Q of the peripheral direction observation lens 13. The protrusion 70 is used as an index 50. As shown in FIG. 13, the video processor 34 may be displayed on the monitor 36.

  According to this, since the operator can easily visually recognize the position of the suction port 17 by visually recognizing the protrusion 70 from the monitor 36, an effect similar to that of the above-described embodiment can be obtained. it can.

  Hereinafter, another modification will be described with reference to FIG. FIG. 14 is a diagram illustrating a modification in which an index is also superimposed on the first subject image displayed on the monitor of the endoscope apparatus.

  In the first and second embodiments described above, the index 50 is shown to be superimposed and displayed on the subject image 82 on the monitor 36 by the video processor 34.

14, the video processor 34 overlaps the subject image 81 with respect to the image signal of the subject image 81 displayed on the monitor 36, that is, the suction included in the observation range of the front observation lens 12. The central axis L (see FIG. 2) along the longitudinal direction N of the mouth 17 may be further superimposed and displayed as an index 50 composed of a virtual straight line L ′ indicating the direction in which the suction mouth 17 is located in the subject image 81. .
FIG. 16 is a diagram illustrating a modification in which the index itself is superimposed and displayed on the first subject image in the direction in which the suction port is located on the monitor of the endoscope apparatus of FIG.
Furthermore, as shown in FIG. 16, the video processor 34 may display the index 50 (W) itself so as to be applied to the subject image 81 on the monitor 36 in the direction in which the suction port 17 is located.

According to such a configuration, in addition to the effects of the first and second embodiments described above, the operator can easily visually recognize the position where the suction port 17 is extended forward from the subject image 81. While viewing, the position of the suction port 17 can be easily recognized, so that it is easier to align the suction port 17 with respect to the suction target. Furthermore, since the projection direction of the treatment tool or the like through the suction port 17 in the subject image 81 can be easily recognized, the treatment property of the test site is improved.
The present invention is not limited to the above-described embodiments, and various changes and modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Endoscope apparatus 4 ... Insertion part 6d ... Part of the front end surface in which the suction port was formed 6s ... Front end surface 10 ... Projection part 11g ... Outer peripheral side surface (side surface) of cylindrical part
11s ... projecting surface 12 ... front observation lens (other subject image acquisition unit) (first subject image acquisition unit) (front image acquisition unit)
13. Lens for observing the surrounding direction (subject image acquisition unit) (second subject image acquisition unit) (side image acquisition unit)
17 ... Suction port 24 ... Lighting lens (lighting window)
25 ... Lighting lens (lighting window)
34 ... Video processor (image generator)
36 ... Monitor (display unit)
DESCRIPTION OF SYMBOLS 41 ... Imaging part 41m ... Imaging surface 50 ... Index | index 70 ... Protrusion 81 ... 1st object image (other object image)
82 ... Second subject image (subject image)
H: Suction possible range K: Radial direction (direction intersecting the longitudinal direction)
L ... Center axis N ... Longitudinal direction Q ... Observation range of the lens for observation in the peripheral direction Z ... Arrow

Claims (11)

An insertion part to be inserted into the subject;
A columnar projecting portion provided to project forward in the longitudinal direction from the distal end surface of the insertion portion in the longitudinal direction;
A subject image acquisition unit that is provided on a peripheral side surface of the protrusion and acquires a subject image from a predetermined region in the subject including a circumferential direction of the protrusion;
Illumination that is provided on the peripheral side surface of the protrusion so as to be positioned outside the field of view of the subject image acquisition unit behind the subject image acquisition unit and that illuminates the region of the subject. Windows,
A suction port disposed at least partially outside the field of view of the subject image acquisition unit behind the subject image acquisition unit in the longitudinal direction;
An image generation unit that generates an image based on the subject image and an index indicating a direction in which the suction port is located, and causes the display unit to display the image generation unit;
An endoscope apparatus comprising: Other subject image acquisition for acquiring another subject image from another region in the subject including the front of the projecting surface provided on the projecting surface of the projecting portion and at least partially different from the predetermined region Further comprising
The endoscope apparatus according to claim 1, wherein the image generation unit further generates an image based on the other subject image and displays the image on the display unit.   The endoscope apparatus according to claim 1, wherein the image generation unit superimposes and displays the index on the image based on a subject image in a circumferential direction of the protrusion in the display unit.   A mask that covers at least a part of the area of the field of view of the subject image acquisition unit by the projecting portion and covers image information of the region blocked by the image generation unit from the image based on the subject image. The endoscope apparatus according to claim 1, wherein processing is performed and displayed on the display unit.   The endoscope apparatus according to claim 4, wherein the image generation unit superimposes the index on a portion where the mask processing is performed. A part of the front end surface portion where the suction port is formed protrudes forward so as to be included in at least the observation range of the subject image acquisition unit,
The endoscope apparatus according to claim 1, wherein the image generation unit generates an image of the portion of the distal end surface where the suction port is formed as the index and displays the image on the display unit. A protrusion included in at least the observation range of the subject image acquisition unit is formed around the suction port on the distal end surface,
The endoscope apparatus according to claim 1, wherein the image generation unit generates at least the projection as the index and displays the projection on the display unit.   The image generation unit displays, as the index, either a range in which the suction target in the subject at the suction port can be sucked or an arrow indicating the flow of the suction target to the suction port. The endoscope apparatus according to claim 1, wherein the endoscope apparatus is displayed on a part. The subject image acquisition unit is a side subject image acquisition unit that acquires the subject image on the side of the protrusion that intersects the longitudinal direction of the insertion unit,
The other test image acquisition unit is a front subject image acquisition unit that acquires the other subject image in front of the protrusion along the longitudinal direction of the insertion unit,
The image generation unit displays the image based on the other subject image in a substantially circular shape on the display unit, and the image based on the subject image displays the display in a substantially annular shape surrounding an image based on the other subject image. The endoscope apparatus according to claim 2, wherein the image is generated so as to be displayed on a unit.   The image generation unit indicates a central axis along the longitudinal direction of the suction port that overlaps the subject image with respect to the image of the subject image in the display unit, and indicates the position of the suction port in the subject image The endoscope apparatus according to claim 9, further superimposing and displaying as an index.   The subject image from the subject image acquisition unit and the other subject image from the other subject image acquisition unit are arranged to photoelectrically convert on the same imaging surface, and electrically to the image generation unit The endoscope apparatus according to claim 2, further comprising an imaging unit to be connected.

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