JPH085683Y2 - Endoscope treatment device raising device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an endoscope having an improved treatment tool raising device for guiding a treatment tool such as a catheter or forceps in a desired direction.

[Prior Art] In endoscopy in the medical field, in addition to observing the inside of a living body, various treatment tools such as a catheter and forceps are endoscopically inserted into the body to treat and treat the affected area. Is being done. At this time, in order to be able to perform an appropriate treatment, a treatment instrument raising device that guides and guides the treatment instrument in a desired direction is emphasized.

As a conventional general treatment instrument raising device, a treatment chamber is formed at the tip of the endoscope insertion portion near the outlet of the treatment instrument insertion channel to form a raising chamber, and one end of which is pivotally attached to the raising chamber. The treatment tool raising base is installed so as to face the outlet of the channel, and the treatment implement raising base is pushed and pulled by the raising wire to swing the treatment implement so that the treatment implement drawn out from the channel outlet is moved. It is designed to be raised along the upper table and guided in a desired direction.

By the way, since the treatment instrument raising base is provided so as to face the outlet of the treatment instrument insertion channel, when sucking dirt such as body fluid using this treatment instrument insertion channel or another suction channel. It is located in the corridor, and can be said to be a very polluted part of the entire endoscope.

In particular, the gap in the shaft support of the treatment instrument raising base and the vicinity of the tip opening of the guide tube for inserting the raising wire are parts where the brush does not reach even if washed with a washing brush etc. once it is contaminated. It is very difficult to remove dirt. Also,
The pathogenic microorganisms contained in the waste are not removed at the time of cleaning, but are protected by the waste, and are difficult to be sterilized even if they are disinfected with a disinfectant. If such a contaminated endoscope is used for multiple patients, it may cause infection, and it is transmitted through body fluids such as blood.
Considering HBV (hepatitis B virus), HIV (AIDS virus), etc., it can be said to be a very serious problem.

Therefore, for example, the actual development Sho 54-87682, the actual development Sho 58-22101
In the endoscope shown in the publication, etc., an elastic film that is expandable and contractible is provided at the distal end of the insertion portion in the vicinity of the outlet of the treatment instrument insertion channel, and water, air, etc. are provided inside this elastic film. There is one in which a treatment tool is raised by expanding the elastic film by supplying a fluid. According to this one,
Since there is no portion where dirt and the like are likely to accumulate, such as the shaft supporting portion of the treatment instrument raising base and the tip end opening of the raising wire inserting guide tube, cleaning and disinfection can be easily performed.

However, in such a device in which the treatment tool is raised by the elastic film, the fluid pressure is introduced into the elastic film through the long pressure-feeding pipe provided internally from the distal end of the insertion part to the operating part at hand. However, in general, the insertion portion of the endoscope is made to have a small diameter in order to reduce the pain of the patient as much as possible, and therefore the pressure feeding pipe also needs to be made thin. At this time, if the pressure-feeding tube is to be thickened, other internal components in the insertion portion, such as the illumination optical system, the observation optical system, or the treatment instrument insertion channel, must be thinned, which is an important function for the endoscope. Will be lost.

However, in such a small-diameter and long pressure-feeding pipe, the conduit resistance becomes very large, and it may take time to expand the elastic film at the tip.

[Problems to be Solved by the Invention] As described above, in the case where the treatment instrument raising base is pivotally attached to the distal end of the endoscope insertion portion so as to face the outlet of the treatment instrument insertion channel, the axial support portion of the treatment instrument raising base is provided. It is difficult to sanitize the endoscope because dirt and other substances are likely to collect in the tip opening of the guide tube for inserting the wire and the raising wire, and to completely clean and disinfect using the cleaning brush and disinfectant. Sometimes required a lot of work.

On the other hand, in the case where the elastic film is expanded to raise the treatment tool, dirt and the like are less likely to accumulate, but this has resulted in a decrease in the operating performance for orienting the essential treatment tool in the desired direction.

The present invention has been made by paying attention to the above circumstances, and is excellent in cleanability and disinfection without impairing the operability of the treatment instrument.
An object of the present invention is to provide a hygienic endoscope treatment tool raising device.

[Means and Actions for Solving the Problems] In order to solve the above problems, a treatment instrument raising apparatus for an endoscope according to the present invention includes an endoscope having a treatment instrument insertion channel reaching the distal end of an insertion portion. An elastic film that is stretched in a liquid-tight manner on a tip cover provided at the tip from the outlet of the channel to raise a treatment tool that is led out from the channel outlet along the surface, and one provided on the elastic film Of the electromagnet or the magnetic body, the other electromagnet provided in the portion facing the elastic film or the magnetic body paired with the one electromagnet, and at least one of the one or the other electromagnet is energized to produce the elasticity. And a current-carrying device for magnetically pushing out the membrane in the rising direction of the treatment tool. In the treatment instrument raising device of this configuration, one electromagnet provided on the elastic film side or the other electromagnet provided opposite to the elastic film is energized by an energizing device to generate a magnetic force in a direction to attract or push out the elastic film. To elastically bulge the elastic film in the rising direction of the treatment tool. Therefore, since the elastic membrane is expanded / contracted by a method other than fluid pressure, the elastic membrane can be easily and surely expanded / contracted regardless of whether the endoscope insertion portion is thick or thin, and the operation tool can be easily started up. Can be done. Further, one of the electromagnets or the magnetic body is disposed in the space portion completely sealed from the outside by the elastic film or in the elastic film, so that the portion in the peripheral portion of the treatment instrument raising device where dirt and the like are likely to collect is completely removed. It can be eliminated and the endoscope can be managed hygienically.

[Embodiment] Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

FIG. 3 shows the whole of the side-view endoscope 1.
Is composed of an operating section 2 at hand, an inserting section 3 connected to the tip of the operating section 2, and a universal cord 4 connected to the proximal end of the operating section 2. This universal code 4
The free end of is connected to a light source device (not shown) via a connector 5 in a detachable manner. Further, a treatment instrument insertion port 6 is provided at the distal end portion of the operation portion 2, and an eyepiece portion 7, an angle knob 8 and a raising knob 9 are provided at the proximal end portion. Further, the insertion portion 3 is formed by sequentially connecting a bending portion 11 and a tip forming portion 12 to the distal end of the flexible tube portion 10, and the bending portion 11 is shown by rotating the angle knob 8 of the operation portion 2 in the drawing. Not bend remotely via angle wires (eg up / down, left / right 4
Direction). As shown in FIG. 4, an illumination window 13, an observation window 14 and a treatment instrument outlet 15 are arranged side by side on the upper side of the distal end forming section 12, and the illumination light output from the light source device is universal. The illumination window 13 through the illumination optical system such as the cord 4 and the light guide fiber (not shown)
Is emitted from. On the other hand, an image of a portion facing the observation window 14 illuminated by the illumination light can be observed by the eyepiece 7 of the operation unit 2 through an observation optical system such as an image guide fiber (not shown). There is.

As shown in FIG. 1, a treatment tool insertion channel 16 and a raising wire insertion tube 17 are provided in the insertion portion 3, and the tips of these are opened on the tip end surface of the tip forming portion 12. However, the rear end side is guided to the operation unit 2. The rear end of the treatment instrument insertion channel 16 is communicated with the treatment instrument insertion opening 6 of the operation portion 2. Further, a tip cover 18 is connected and fixed to the tip of the tip forming section 12, that is, to the tip side of the outlet 16a of the treatment instrument insertion channel 16. This tip cover
An elevating chamber 19 is formed in the opening 18, and an elastic film made of synthetic rubber or the like is provided in the opening thereof, that is, the portion through which the treatment instrument 20 drawn out from the outlet 16a of the treatment instrument insertion channel 16 passes.
21 is liquid tightly attached without a gap. The surface of this elastic film 21 forms a continuous smooth arc surface from the bottom surface of the treatment instrument insertion channel 16 (near the bottom surface in the figure) to the tip edge of the treatment instrument outlet port 15 (near the tip edge in the figure). There is. Then, in the raising chamber 19 which is covered with the elastic film 21 and completely sealed from the outside, the treatment instrument raising device 41 for expanding the elastic film 21 from the back side in the raising direction of the treatment instrument 20.
Is provided. That is, the treatment instrument insertion channel
A magnetic body 42 is attached to the back surface of the elastic film 21 that is attached to the portion through which the treatment tool 20 that is drawn out from the outlet 16a of 16 passes. In addition, an elastic film is provided at the distal end of the distal end forming portion 12 with a communication portion 43 between the treatment instrument insertion channel 16 and the treatment instrument outlet port 15 sandwiched therebetween.
An electromagnet 44 is fixed at a position facing 21. Further, one end of a lead wire 45 is connected to the electromagnet 44, and the lead wire 45 passes through the lead wire insertion tube 46 guided to the operation portion 2 and the other end is connected to an external energization device 47.
This energizing device 47 includes a power source 48, a variable resistor 49 and a switch.
It consists of 50 connected in series. Next, the operation of the above configuration will be described. Treatment tools such as catheters and biopsy forceps
When using 20 to treat / treat a diseased part in a living body endoscopically, first, the insertion part 3 of the endoscope 1 is inserted into the body cavity, and the distal end configuration is performed while observing the inside of the body with the eyepiece part 7. The part 12 is guided to the vicinity of the affected part. Then, the treatment instrument is inserted from the treatment instrument insertion opening 6 of the operation unit 2.
20 is inserted, the tip thereof is projected from the outlet 16a of the treatment instrument insertion channel 16, and further pushed forward. Then, the tip of the treatment instrument 20 slides along the surface of the elastic film 21 and is led out to the outside from the treatment instrument lead-out port 15 (state of FIG. 1). Then, when the switch 50 of the energizing device 47 is closed, the electromagnet 44 is energized via the lead wire 45, and the electromagnet 44 generates magnetism. Then, the magnetic force attracts the magnetic body 42 to the electromagnet 44, and as a result, the elastic film 21 bulges outward (state of FIG. 2). As a result, the treatment instrument 20 led out to the outside from the treatment instrument outlet port 15 through the treatment instrument insertion channel 16 rises in the D direction, whereby the treatment instrument 20.
Are guided in the desired direction. At this time, by changing the resistance value of the variable resistor 49 to change the current value, the electromagnet
The magnetic force of 44 is adjusted to control the suction force of the magnetic body 42,
Adjust the 20 rising levels.

By the way, when the filth such as body fluid is sucked using the treatment instrument insertion channel 16 as necessary, or when the treatment instrument 20 exposed to filth such as an affected part is inserted or removed, the outlet of the treatment instrument insertion channel 16 Since the part facing 16a is located in the dirt passage, it is very easily contaminated.

However, the rising chamber in which the lead wire 45, the magnetic body 42, or the lead wire insertion tube 46 is completely sealed by the elastic film 21.
Since the treatment tool raising device 41 (magnetic body 42) in the raising chamber 19 is not exposed to dirt, it is attached to the surface of the elastic film 21 because it is provided in the inside of 19 or the tip forming portion 12 in a sealed manner. Only to do. Thus, the dirt attached to the elastic film 21 is a cleaning liquid,
In some cases, it can be easily washed off using a cleaning brush or the like, and even if the pathogenic bacteria remain on the elastic film 21, they are not thickly protected by dirt and can be easily sterilized. That is, it is possible to completely eliminate the portion of the peripheral part of the treatment instrument raising device 41 where filth easily accumulates, and the cleaning and disinfecting properties of the endoscope 1 can be improved.

Further, since the elastic film 21 is electromagnetically operated, only the lead wire 45 needs to be inserted into the insertion section 3, and therefore, other built-in objects in the insertion section 3, such as an illumination optical system and It is possible to remotely perform the raising operation of the treatment instrument 20 without making the observation optical system, the treatment instrument insertion channel 16 or the like thin. As a result, a treatment tool 20 that does not lose important functions for the endoscope 1 and that it takes time to bulge the elastic film 21 at the distal end.
There is no decrease in operability.

Further, in this embodiment, the magnetic body 42 is connected to the lead wire insertion tube 46.
Since it is electrically operated via the lead wire 45 inserted in the inside, unlike the case where the wire is inserted into the duct and the pulling operation is performed, the wire is bent when the bending portion 11 is bent. Therefore, the treatment tool 20 can be satisfactorily erected without being affected by strong rubbing or being caught in the middle of the operation.

 FIG. 5 shows a second embodiment of the present invention.

In this embodiment, in the first embodiment, the elastic film 21 is bulged in the rising direction of the treatment instrument 20 by the first electromagnet 71, and the elastic film 21 is forcibly contracted by the second electromagnet 72. It was made to let. That is, the magnetic body 42 is attached to the back surface of the elastic film 21, and the elastic film is attached to the distal end portion of the distal end forming portion 12 with the communication portion 43 between the treatment instrument insertion channel 16 and the treatment instrument outlet port 15 interposed therebetween. The first electromagnet 71 is fixed at a position facing the elastic film 21, and the second electromagnet 71 is provided at a position facing the elastic film 21 on the back side of the elastic film 21 with the raising chamber 19 interposed therebetween.
The electromagnet 72 of is fixed. And these electromagnets 7
An energization device 73 for energizing the first and the second 72 is configured by connecting a power source 74, a variable resistor 75 and a changeover switch 76 in series, and one contact c of the changeover switch 76 is connected to the first lead wire 77 through a first lead wire 77. It is connected to the electromagnet 71 and the other contact d is the second lead wire 78.
Is connected to the second electromagnet 72 via. The rest of the basic structure is the same as that of the first embodiment, and the description thereof is omitted.

In such a configuration, the changeover switch of the energization device 73
When 76 is closed to the side of one contact c, the first electromagnet 71 is energized, and this produces magnetism. Then, the magnetic body 42 is attracted to the first electromagnet 71 by the magnetic force, and the elastic film 21
Is bulged outward. As a result, the treatment tool 20 (see FIG. 2) rises and is guided in a desired direction. At this time, by changing the resistance value of the variable resistor 75 and changing the current value, the magnetic force of the first electromagnet 71 is adjusted to control the attraction force of the magnetic body 42, and the rising level of the treatment instrument 20 is adjusted. adjust. on the other hand,
When it is desired to contract the elastic film 21 to the original state, the changeover switch 76 is closed to the other contact d side. Then, the second electromagnet
72 is energized, which produces magnetism. Then the magnetic body
42 is attracted to the second electromagnet 72, and the elastic film 21 is contracted inward. As a result, the treatment tool 20 is lowered.

According to such a configuration, in addition to the effect of the first embodiment, since the two electromagnets 71 and 72 for raising and lowering are used, the raising and lowering operations of the treatment instrument 20 can be performed better. Can be done. The present invention is not limited to the above-mentioned first and second embodiments, and for example, the treatment tool 20 on the surface of the elastic film 21 is used.
A wear plate that prevents wear of the elastic film 21 may be attached to the portion hit by. Further, although the magnetic body 42 is provided on the back surface of the elastic film 21 in the first embodiment, the magnetic body 42 may be embedded in the elastic film 21, or the elastic film 21 itself may be mixed with magnetic powder in advance. You may make it a magnetic member by shape | molding etc. Further, the magnetic body 42 and the electromagnet 44 may be provided in reverse. Of course, various modifications can be made without departing from the scope of the present invention.

[Effects of the Invention] As described above, according to the present invention, since the treatment tool is raised through the elastic film, the portion where dirt and the like are likely to collect is completely removed in the peripheral portion of the treatment tool raising device. It can be eliminated, and the dirt attached to the surface of the elastic film can be easily washed away at the time of washing. Further, most of the pathogenic bacteria in the waste are removed at the time of washing, and even if a small amount remains, the protection by the waste can be eliminated, and it can be easily sterilized by using an antiseptic solution. Therefore, the cleaning and disinfecting properties are excellent, the endoscope can always be handled hygienically, and infection caused by the endoscope can be eliminated. Moreover, since the elastic membrane is expanded and contracted by a method other than fluid pressure, the elastic film can be easily and reliably expanded and contracted regardless of whether the endoscope insertion portion is thick or thin, and the operation tool is raised. Can be performed satisfactorily.

[Brief description of drawings]

1 and 2 are side sectional views of the distal end portion of the endoscope insertion portion showing the first embodiment of the present invention, FIG. 3 is a perspective view of the entire endoscope, and FIG. 4 is an endoscope. FIG. 5 is a perspective view of the distal end portion of the insertion portion, and FIG. 5 is a schematic configuration diagram of a treatment instrument raising device showing a second embodiment of the present invention. DESCRIPTION OF SYMBOLS 1 ... Endoscope, 2 ... Operation part, 3 ... Insertion part, 16 ... Treatment tool insertion channel, 16a ... Exit, 18 ... Tip cover, 19 ... Elevating chamber, 20 ... Treatment tool, 21 ... Elastic film, 42 ... magnetic material, 44 ... electromagnet, 47 ... energizing device, 71 ... first electromagnet, 72 ... second electromagnet.

Claims (1)

[Scope of utility model registration request] Claim: What is claimed is: 1. An endoscope having a treatment tool insertion channel that reaches the tip of an insertion portion, and a treatment that is liquid-tightly stretched on a tip cover provided at the tip from the outlet of the channel and led out from the channel outlet. An elastic film for raising the tool along the surface, one electromagnet or magnetic body provided on the elastic film, and the other electromagnet or the one electromagnet provided on the portion facing the elastic film. And a current-carrying device that magnetically pushes the elastic film in the rising direction of the treatment tool by applying current to at least one of the one or the other electromagnet. Treatment device raising device.