JP2008302242A - Endoscope - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To allow changing the direction of an observation optical system by bending a bendable part as a projection, thinner than an insertion part, and projectingly provided at the distal end of the insertion part. <P>SOLUTION: In an endoscope 1 provided with an insertion part 10 and a handle 11, an airtight channel is provided in the insertion part 10, and also a bendable part 45 as a projection, thinner than the insertion part 10 is provided at the distal end so that the bendable part 45 can project from it. Further, an observation optical system 17 is provided at the distal end of the bendable part 45. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a video endoscope which is inserted into the anus, for example, to observe / diagnose and treat the anus / rectum.

In the conventional anal video endoscope described in JP-T-6-506855, a video camera is detachably attached so that it can move along a track provided on one of the two blades. It has been.
JP-T 6-506855

  Conventional video endoscopes have blades above and below the field of view of the observation optical system, so it is possible to observe the lesion in front, but the distance between the observation optical system and the lesion is sufficient. As a result, when the treatment is performed, the lesioned part to be treated can be captured only by a small part of the visual field of the video camera. For this reason, it is very difficult to perform a treatment operation that requires a particularly fine operation.

  The present invention has been made in view of the above problems, and a bending portion as a projection portion narrower than the insertion portion is provided protruding from the distal end of the insertion portion, and an observation optical system is provided on the bending portion to bend the bending portion. An object of the present invention is to provide an endoscope that can change the direction of an observation optical system.

The invention according to claim 1 is an endoscope having an insertion portion and a gripping portion, wherein a channel is provided in the insertion portion, and a curved portion as a projection portion narrower than the insertion portion is protruded at the distal end of the insertion portion. And an observation optical system is further provided at the tip of the bending portion.
The invention according to claim 2 is the endoscope according to claim 1, wherein a channel opening of the channel is provided at a distal end of the insertion portion.
The invention according to claim 3 is characterized in that an insertion port for the channel is provided in the grip portion, and a forceps plug for detaching the channel is provided in the insertion port. The endoscope according to claim 2.

  In the present invention, since the bending portion as the projection portion thinner than the insertion portion is provided protruding from the distal end of the insertion portion and the observation optical system is provided at the bending portion, the bending portion is bent to change the direction of the observation optical system. be able to. Therefore, it is easy to observe and treat easily.

  An anal video endoscope system according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 5. FIG. 1 shows the entire system of the anal video endoscope and its peripheral devices. The anal video endoscope 1 includes an endoscope main body 2, a universal cord 3, and a connector 4, and the connector 4 is connected to a light source device 5. A camera control unit 7 is connected to the connector 4 via an electric cable 6. The camera control unit 7 is connected to a monitor 8 via a cable 9.

  The light from the light source device 5 is transmitted from the connector 4 through the universal cord 3 to the endoscope main body 2 through a fiber (not shown) arranged inside them, and is irradiated into the body cavity. An image signal obtained by the anal video endoscope 1 is transmitted from the endoscope body 2 to the connector 4 via the universal cord 3, and is transmitted from the connector 4 to the camera control unit 7 via the electric cable 6. . The camera control unit 7 transmits the video signal obtained by processing the transmitted image signal to the monitor 8 via the cable 9 and displays it as an image there.

  FIG. 2 shows an endoscope main body 2 of the anal video endoscope 1, and the endoscope main body 2 includes an insertion portion 10 and a grip portion (hand portion) 11. The insertion portion 10 includes an outer tube 12 and an insertion portion 13, and the insertion portion 13 is provided with a protrusion 14 protruding forward and a channel opening 15 located on the base side of the protrusion 14. It has been. The channel opening 15 opens to the front end wall surface of the insertion portion 13 from which the protrusion 14 protrudes toward the front while avoiding the protrusion 14. The protrusion 14 is arranged to be offset toward the lower side of the channel opening 15, and the channel opening 15 is arranged to be offset to the upper side of the protrusion 14.

  An observation part 16 is provided at the tip of the protrusion 14 so as to be inclined obliquely toward a portion located in front of the channel opening 15. As shown in FIGS. 2 and 3, the observation unit 16 is provided with an observation optical system 17, an illumination optical system 18, and an air / water supply nozzle 19.

  FIG. 3 shows a cross-sectional view in which the portion of the observation section 16 is vertically cut. The observation optical system 17 includes a lens unit 20 and a CCD unit 21, and transmits an image captured by the lens unit 20 to the CCD unit 21. The CCD unit 21 converts the image into an imaging signal. This signal is guided to the connector 4 through the signal cable 22 and the universal cord 3 as described above.

  The air / water supply nozzle 19 is provided toward the outer surface of the lens unit 20. And the surface can be wash | cleaned by supplying water toward the outer surface of the lens unit 20, and supplying air as needed.

  The outer cylindrical tube 12 of the insertion portion 10 is made of a transparent member such as glass and plastic in a cylindrical shape, and a portion of the outer cylindrical tube 12 at the tip is formed in a bullet shape. A side hole 23 is provided in the upper portion of the side wall of the outer tube 12. The outer tube 12 is fitted and connected to the outer periphery of the base portion of the insertion portion 13 at the proximal end of the insertion portion 10.

  FIG. 4 is a vertical cross-sectional view schematically showing a state in which the outer tube 12 is connected to the insertion portion 13 at the proximal end portion of the insertion portion 10. A convex portion 24 is provided on the inner periphery of the proximal end portion of the outer tube 12, and this is detachably engaged with a concave portion 25 provided on the outer periphery of the insertion portion 13. Thereby, the outer tube 12 is connected to the insertion portion 13 at a fixed position in the axial direction of the insertion portion 10.

  FIG. 5 shows a cross section of a portion along the line AA in FIG. An anti-rotation convex portion 26 is provided on the inner periphery of the outer tube 12, and the anti-rotation convex portion 26 is fitted with an anti-rotation concave portion 27 provided on the outer periphery of the insertion portion 13. In this connected state, the channel opening 15 is located on the proximal end side of the protrusion 14 and is disposed toward the space between the side hole 23 of the outer tube 12 and the observation portion 16. Moreover, the channel opening 15 is provided so as to be retracted from the space in the axial direction of the insertion portion 10.

  On the other hand, as shown in FIG. 2, the grip portion 11 includes a grip 28 portion that is actually gripped by a hand and a base portion 29 portion that is integrally formed with the insertion portion 10. The universal cord 3 is connected to the lower end of the grip 28. The grip portion 11 is oriented in a direction that forms a right angle or an obtuse angle with respect to the insertion portion 10. Between the universal cords 3, a buckling prevention elastic member 30 for preventing the universal cord 3 from buckling is provided.

  A suction button 31 is provided on the side wall portion located in the insertion direction of the upper portion of the grip 28 to perform the operation when sucking dirt and the like from the channel opening 15. An air / water supply button 32 is provided for performing operations of air supply and water supply from the air / water supply nozzle 19. A forceps insertion port 33 that communicates linearly with the channel opening 15 is provided in a portion of the base portion 29 that is located on the opposite side of the insertion portion 10. A forceps plug 34 for ensuring airtightness is detachably connected to the forceps insertion opening 33.

  Further, FIG. 2 shows a case where the vagina is excised at high frequency by using the video endoscope 1 for anus. That is, the insertion portion 10 with the outer tube 12 attached to the insertion portion 13 is inserted into the anus 50, and the high-frequency snare 35 inserted from the forceps plug 34 is protruded from the channel opening 15 into the outer tube 12, so that the outer tube It is hung from the side hole 23 of the tube 12 to the portion of the flange 51 that has entered the outer tube 12 and is cut off at high frequency.

  According to the first embodiment, the following various effects can be obtained. Since the observation optical system 17 is formed in the protrusion 14 away from the front portion of the channel opening 15, the affected part (痔) protruding into the outer tube 12 from the side hole 23 provided in the outer tube 12. The observation optical system 17 can be directed close to and the observation optical system 17 is not in close contact with the affected part (the eyelid), so that a sufficient field of view is generally obtained in the narrow outer tube 12. The affected area can be observed while ensuring.

  Since the treatment instrument channel opening 15 is provided toward the region between the affected area and the observation optical system 17, the affected area and the treatment instrument can be observed at the same time, and it is easy to perform treatment. Since the affected part is put into the side hole 23 of the outer tube 12 and the affected part is treated, there is no influence on the healthy part other than the affected part, and it is safe and can be performed quickly. Since the affected part protrudes into the outer tube 12 of the insertion part 10, it is easy to snare. Since the outer tube 12 is detachable from the endoscope main body 2, it is easy to clean and disinfect them, and hygienic management is easy.

  An anal video endoscope according to a second embodiment of the present invention will be described with reference to FIG. Since the basic configuration of the anal video endoscope is substantially the same as that of the first embodiment described above, differences from the first embodiment are mainly shown here.

  That is, the present embodiment is different in the portion corresponding to the grip portion 11 of the first embodiment, and the grip 36 is provided with a rotary bearing body 36 a that rotatably holds the insertion portion 10 as a rotary body 37. Yes. The universal cord 3 is connected to the base end of the rotating body 37 using the elastic member 30 for buckling prevention described above. Further, the observation part 16 is oriented in a side surface direction of 90 ° with respect to the insertion direction of the protrusion 14, and a side hole 23 of the outer tube 12 is provided in that direction.

  According to the second embodiment, the following effects can be further obtained. In other words, the anus has a cylindrical lumen, but the insertion part 10 can be rotated regardless of the position of the cylindrical part where the affected part (acupuncture) is located. Directed and easy to treat. In addition, since the grip 36 is rotatable with respect to the endoscope body 2, the grip portion 11 can always be gripped in a direction in which it can be easily gripped. Can be reduced.

  With reference to FIG. 7, an anal video endoscope according to a third embodiment of the present invention will be described. Since the basic configuration of the anal video endoscope is substantially the same as that of the first embodiment described above, differences from the first embodiment are mainly shown here.

  In the present embodiment, the projection 14 shown in the first embodiment is not provided, and the insertion portion 13 is provided with an observation optical system 17 and an illumination optical system 18 on an end surface portion located below the channel opening portion 15. A second channel opening 39 is provided at the lower position. A treatment instrument such as a grasping forceps 40 is detachable in the second channel opening 39, and the treatment instrument is opened from the lower surface of the insertion portion 13 when the outer tube 12 is removed. It is fitted into the part 39 and attached. The grasping forceps 40 is provided with an opening / closing part 43 at the tip thereof. The grasping forceps 40 can swing up and down by a lever 42 with a pivot 41 as a rotation axis, and the opening / closing portion 43 can be operated by a forceps lever 44.

  According to the third embodiment, the following effects can be further obtained. That is, since the grasping forceps 40 can swing around the pivot portion 41, the grasping portion (痔) can be grasped and pulled into the outer tube 12, and mucosal resection of the affected portion in combination with the high-frequency snare 35 is possible. Is easy. Also. Since the high-frequency snare 35 comes out from above the visual field and the grasping forceps 40 comes out from below the visual field, it is possible to reduce visual field vignetting of the affected area due to the treatment instruments.

  An anal video endoscope according to a fourth embodiment of the present invention will be described with reference to FIG. Since the basic configuration of the anal video endoscope is substantially the same as that of the second embodiment described above, the differences from the second embodiment are mainly shown here.

  The part of the insertion part 13 differs especially from 2nd Embodiment. The interpolating portion 13 in the fourth embodiment has a channel opening 15 and a curved portion 45 as a protruding portion, and an observation optical system 17 and an illumination optical system 18 facing forward at the distal end surface portion of the curved portion 45. And an air / water supply nozzle 19 are provided. The channel opening 15 is located on the end surface of the insertion portion 13 and is located on the proximal end side of the bending portion 45.

  Further, the side peripheral surface portion of the outer tube 12 has a side hole 23 similar to the above, and a front opening 46 is provided at the front end of the outer tube 12 at the center of the front. A bending lever 47 for bending the bending portion 45 is provided on the base end side of the rotating body 37. By operating the bending lever 47, the direction of the observation optical system 17 and the illumination optical system 18 can be changed to face the side hole 23 or the front opening 46.

  According to the fourth embodiment, the following effects are further obtained. That is, since the bending portion 45 can be bent, the observation optical system 17 and the illumination optical system 18 can be directed in the front direction. Accordingly, the insertion operability is good, and the affected part protruding from the side hole 23 of the outer tube 12 can be viewed from the front by the bending operation, so that it is easy to observe and treat. Moreover, since the insertion part 10 is rotatable, it is possible to observe and treat the affected part (acupuncture) at any position of the rectum, and it is easy to operate.

  With reference to FIG. 9, an anal video endoscope according to a fifth embodiment of the present invention will be described. Since the basic configuration of the anal video endoscope is the same as that of the fourth embodiment described above, the differences from the fourth embodiment are mainly shown here.

  This embodiment differs from that of the fourth embodiment described above in that the outer tube 12 is not provided. Accordingly, since the portion that was the insertion portion 13 does not have the outer tube 12, the insertion portion 48 is inserted directly into the body cavity. Since the outer periphery of the insertion body 48 is directly inserted into the body cavity, each ridge portion is rounded and chamfered so as not to have an edge portion.

  In the fifth embodiment, since the outer diameter of the insertion portion 10 can be reduced by the absence of the outer tube 12, there is less invasiveness to the patient. Further, since the bending portion 45 is bent, the observation optical system 17 and the illumination optical system 18 can be directed in the front direction. Since the base end side portion of the insertion portion 10 is thicker than the bending portion 45, the affected part can be observed with the anus expanded, so that it is easy to perform treatment. Moreover, since the insertion part 10 can rotate, it can be observed and treated at any position of the rectum, so that it is easy to operate.

  The present invention is not limited to the embodiment described above. According to the description of the above embodiment, at least the items listed below and the items arbitrarily combined with them are obtained.

<Appendix> 1-1. In an endoscope having an insertion part and a grip part, the insertion part has an outer tube having a side hole, an observation optical system for observing a treatment target part located in the side hole, and illumination optics for illuminating the treatment target part An observation unit having a system, and a channel opening for leading a treatment instrument toward a space between the observation unit and a side hole provided in the outer tube, and the channel opening is inserted from the space An anal video endoscope characterized by being retracted in the axial direction.
1-2. The video endoscope for anus, wherein the grip portion is provided in a direction perpendicular to or perpendicular to the insertion portion.
1-3. The video endoscope for anus, wherein the outer tube is cylindrical and has a bullet-shaped tip closed.
2. 2. The anal video endoscope according to item 1, wherein the outer tube is transparent and detachable.
3. The observation section is provided at a distal end portion of a bending section provided inside the outer tube, and the insertion section is rotatably attached to the gripping section. 3. An anal video endoscope according to item 2.
4). An observation part having a grip part oriented in a direction perpendicular or obtuse to the insertion part, the insertion part having a hard part and a bending part, and having an observation optical system and an illumination optical system at the distal end of the bending part An endoscope for anus, wherein the insertion portion is rotatably attached to a gripping portion.

(Technology for invention of item 4)
Conventionally, as an endoscope having an insertion portion having a hard portion that cannot be bent and a curved portion, one described in JP-A-6-506855 is known. In this model, the grip portion is fixed to the insertion portion, and the bending direction of the bending portion is restricted by the hood.

(Purpose of invention of item 4)
When observing the anus, there may be wrinkles on the top, bottom, left and right of the lumen of the anus, so the gripping part is fixed to the insertion part as in the conventional model, and the bending part is bent downward by the hood. In such a configuration, when there is a wrinkle above the lumen, the gripping part must be rotated upward for observation, and the operability in performing observation and treatment operations was very poor. The fourth aspect of the invention has been made in view of the above problems, and an object thereof is to provide an anal video endoscope having good operability.

Explanatory drawing which shows the whole system of the video endoscope for anus and its peripheral device which concern on 1st Embodiment of this invention. The side view of the use condition of the endoscope main part of the video endoscope for anus concerning a 1st embodiment of the present invention. The longitudinal cross-sectional view of the observation part of the video endoscope for anus concerning 1st Embodiment of this invention. The longitudinal cross-sectional view of the insertion part which mounted | wore with the outer cylinder pipe | tube in the video endoscope for anus concerning 1st Embodiment of this invention. The cross-sectional view of the part which follows the AA line in FIG. The side view of the use state of the endoscope main body of the video endoscope for anus concerning 2nd Embodiment of this invention. The side view of the use condition of the endoscope main part of the video endoscope for anus concerning 3rd Embodiment of this invention. The side view of the use condition of the endoscope main body of the video endoscope for anus concerning 4th Embodiment of this invention. The side view of the use condition of the endoscope main body of the video endoscope for anus concerning 5th Embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Endoscope, 2 ... Endoscope main body, 10 ... Insertion part, 11 ... Grasping part, 12 ... Outer tube, 13 ... Insertion part, 14 ... Projection part, 15 ... Channel opening part, 16 ... Observation part , 17 ... Observation optical system, 18 ... Illumination optical system, 20 ... Lens unit, 21 ... CCD unit, 23 ... Side hole, 33 ... Forceps insertion port, 34 ... Forceps plug.

Claims (3)

  In an endoscope having an insertion portion and a gripping portion, a channel is provided in the insertion portion, a bending portion as a protruding portion that is narrower than the insertion portion is provided at the distal end of the insertion portion, and the distal end of the bending portion is further provided. An endoscope comprising an observation optical system.   The endoscope according to claim 1, wherein a channel opening of the channel is provided at a distal end of the insertion portion.   The endoscope according to claim 1 or 2, wherein an insertion port for the channel is provided in the grip portion, and a forceps plug for detaching the channel is provided in the insertion port in a detachable manner. mirror.

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