JPH04325138A - Sleeve device of endoscope - Google Patents

Abstract

PURPOSE:To provide the sleeve device of an endoscope which does not contaminate an endoscope side at the time of removing the device from the endoscope after the end of an inspection. CONSTITUTION:This device is constituted of a cylindrical sheath 100 for covering a slender endoscope insertion part 20, an operating part cover 14 provided in communication with the end of the above-mentioned sheath 100 for enclosing the operating part 30 connected to the base end of the above-mentioned endoscope insertion part 20 and a fluid flow tube 4 which is placed extending from the base end of the above-mentioned sheath 100 to the outer side of the above- mentioned operating part cover 14.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endoscope jacket device used to prevent an endoscope from coming into direct contact with a human body when inspecting the inside of a human body cavity.

[0002] It is necessary to prevent diseases from being transmitted from a patient to another patient or from a patient to an operator via an endoscope. Therefore, in recent years, during examinations, a cloak device is placed over the endoscope to prevent the patient and operator from coming into direct contact with the endoscope.
Some devices require the mantle device to be replaced with a new one for each inspection.

0003

2. Description of the Related Art An endoscope sheath device has a sheath for covering an endoscope insertion section and an operation section cover for enclosing an operation section. Even when performing an examination by placing such a cloak device over an endoscope, it is necessary to eject air or water from the tip or to suction out sewage inside the body cavity, just as in normal endoscopy. There is. Therefore, tubes are required to supply air, water, and suction.

[0004] Conventionally, therefore, tubes were passed from the inside of the sheath into the cover of the operating section, and the conduits of these tubes were opened and closed by operating valves provided in the operating section.

[0005]

[Problems to be Solved by the Invention] One of the very important things to prevent infection is that when the mantle device is removed from the endoscope after use, dirt attached to the mantle device can be removed from the endoscope. Avoid touching the parts and operation parts.

However, as mentioned above, in the conventional endoscope jacket device, the tubes passed through the inside of the operation section cover, so after removing the operation section cover from the operation section, the tubes were removed from the operation section. I will have to remove it.

[0007] Then, the tubes must be removed from the operating section with dirty hands (gloves) that have touched the contaminated operating section cover during use, so that there is no chance that the dirty hands will touch the operating section. There was a big problem of unavoidable contamination of the operating section.

[0008]

'Therefore, it is an object of the present invention to provide an endoscope jacket device that is free from the risk of contaminating the endoscope side when removed from the endoscope after an examination.

[0009]

[Means for Solving the Problems] In order to achieve the above object, the endoscope sheath device of the present invention includes a cylindrical sheath for covering the elongated endoscope insertion portion so as to isolate it from the outside. , an operating section cover provided continuously at the proximal end of the sheath to enclose the operating section connected to the proximal end of the endoscope insertion section; and an operating section cover that passes through the sheath and extends to the distal end of the sheath. The present invention is characterized in that it is provided with a fluid communication tube that communicates with the sheath and extends from the proximal end portion of the sheath to the outside of the operation section cover.

[0010]Fixing means may be provided for fixing the fluid delivery tube to the outer surface of the operating section cover,
The fixing means may be provided on the operating section to fix the operating section cover and the fluid delivery tube together from inside the operating section cover.

[0011] Further, a conduit opening/closing operation device for opening and closing the conduit of the fluid communication tube may be provided in the operation section, and the conduit opening/closing operation device of the fluid communication tube can be opened and closed by the conduit opening/closing operation device. The operation may be performed with the operating section cover sandwiched between the operating section and the fluid delivery tube.

[0012] Furthermore, an air inlet for supplying air into the sheath to inflate the sheath may be covered by the operation section cover.

[0013]

[Embodiment] An embodiment will be described with reference to the drawings.

FIG. 2 shows an endoscope 200 on which the endoscope sheath device of the present invention is placed, and 20 is an insertion section (endoscope insertion section) made of a long and thin flexible tube. Insertion part 20
A U-shaped concave groove 21 is formed in the upper part of the outer peripheral surface in the axial direction over the entire length.

A curved portion 23 is formed at the distal end of the insertion portion 20 and is bent by remote control.
A tip main body 24 is connected, which is provided with an observation window and an illumination window (not shown).

An operating section (endoscope operating section) 30 is connected to the proximal end side of the insertion section 20. Reference numerals 31 and 32 designate tube holding portions for fixing a fluid delivery tube of a mantle device, which will be described later, in a fixed position on the operating section 30. 41 and 42 are conduit opening/closing operating devices for opening and closing the conduit of the fluid communication tube. Reference numeral 33 denotes a receiving portion for fixing the fluid delivery tube at a position facing the movable pins 41g, 41h, 42g operated by the conduit opening/closing operating devices 41, 42. These will be explained in detail one by one.

Reference numeral 35 denotes an eyepiece for observing an image sent from an observation window via an image guide fiber bundle (not shown). Reference numeral 36 denotes a flexible tube for connecting a light source into which a light guide fiber bundle is inserted, which sends illumination light supplied from a light source device (not shown) to the illumination window.

Reference numeral 38 denotes a curved operating knob rotatably provided on the back side of the operating section 30 in FIG. 2, and is detachably attached to the operating section 30. The structure for attachment and detachment is described in Japanese Patent Application Laid-Open No. 2-126825.

FIGS. 3 and 4 show a cylindrical sheath 100 of the endoscope sheath device for covering the endoscope insertion portion 20 so as to isolate it from the outside. sheath 100
is sheathed over its entire length by a thin cylindrical sheathing tube 1 made of a stretchable material such as silicone rubber. A tip support 2 made of a transparent member such as transparent styrene resin is airtightly connected to the tip. The rear end portion of the exterior tube 1 is tightly joined to the distal end portion of the mouth support 3, so that the exterior tube 1 and the mouth support 3 are airtightly connected.

[0020] Reference numeral 4 denotes a fluid delivery tube made of, for example, tetrafluoroethylene resin, and is inserted into the sheath 100 over its entire length. The fluid communication tube 4 includes a suction tube 4s that also serves as a forceps channel, an air supply tube 4a, and a water supply tube 4w, and is arranged along the groove 21 of the endoscope insertion section 20. The rear end side of the fluid delivery tube 4 extends rearward from the mouth support 3 while being bundled into one length to a certain extent.

The inside of the tip support 2 is formed to a size such that the tip main body 24 of the endoscope can be loosely inserted therein, and a nozzle piece 5 is provided protruding from the surface side of the tip support 2. ing. The nozzle piece 5 has an air supply nozzle and a water supply nozzle opened toward the part where the observation window is located when the distal end body 24 of the endoscope is fitted into the distal end support 2.

[0022] Further, the tip support body 2 has a suction port 5s opening toward the front, which also serves as a forceps port. The suction tube 4s, the air supply tube 4a, and the water supply tube 4w are connected to the suction port 5s, the air supply nozzle, and the water supply nozzle, respectively.

Reference numeral 6 denotes a forceps insertion hole protruding from the mouth support 3. A hole 7 is bored in the side wall of the fluid delivery tube 4 to communicate the suction tube 4s and the forceps insertion hole 6.

Near the mouth of the mouth support 3, there is a metal frame 8,
A packing 10 is arranged between the two. The packing 10 is provided with a hole 10a whose size is slightly smaller than the cross-sectional shape of the endoscope insertion section 20.
0 can be sealed without any gaps, and the endoscope insertion section 20 can be smoothly inserted and removed without getting caught.

An air supply nipple 12 is provided in the air supply port 11 formed in the mouth support 3 so as to communicate with the interior of the exterior tube 1.
The outer tube 1 can be inflated when the endoscope insertion section 20 is inserted or removed by inserting the sheath 100 arbitrarily to send air into the sheath 100. 13 is a fixing screw for fixing the mouth support 3 to the endoscope operating section 30.

FIG. 5 shows the endoscope operating section 3 of the cloak device.
2 shows an operation section cover 14 for enclosing the entire 0. For ease of understanding, FIG. 5 shows a state in which the bending operation knob 38 is removed from the operation section 30 and viewed from the back side compared to the previous figures.

The operation section cover 14 has a thickness of, for example, 0.05 mm.
It is formed from a single piece of flexible material such as soft vinyl chloride with a thickness of 0.5 mm to 0.5 mm, and is transparent or translucent.

One end of the operation section cover 14 is wrapped around the base of the eyepiece section 35 so as to cover the entire length of the operation section 30. However, in the case of an electronic endoscope, there is no eyepiece, so that part is covered by the operation part cover 14.
Make sure to cover it completely.

The other end of the operating section cover 14 is wrapped around the outer periphery of the mouth support 3 of the mantle device. At this time,
The air supply port 11 is covered by the operation section cover 14. Therefore, the vicinity of the air supply port 11 is not contaminated during endoscopy, and
When air is supplied into the sheath 100 from the air supply port 11 after the end of the examination, the endoscope insertion portion 20 within the sheath 100 is not contaminated.

In order to wrap the operating section cover 14 as tightly as possible around the operating section 30, the operating section cover 14 is wrapped around the protruding parts of the conduit opening/closing operating devices 41 and 42.
4 is formed to protrude outward in a bag shape (the bag-shaped portion 14
a).

Furthermore, when the operation section cover 14 is wrapped around the operation section 30, the last part of the operation section cover 14 can be wrapped around the conduit opening/closing operation device 4.
Hooking hole 14b for hooking onto the protruding parts 1 and 42
is drilled. At the portion where the curved operation shaft 38a protrudes from the operation section 30, there is a hole 1 for passing the shaft 38a.
4c is bored on the operation section cover 14 side. In order to be able to wrap around the base of the light source connection flexible tube 36, that portion of the operating section cover 14 is formed in a U-shape (U-shaped portion 14d).

As shown in FIG. 5, the operation section cover 14
is wrapped around the operating section 30 with the endoscope insertion section 20 completely inserted into the sheath 100.

FIG. 6 shows a state in which the hooking hole 14b is hooked onto the protruding parts of the conduit opening/closing operating devices 41, 42, whereby the bag-shaped portion 14a also connects to the conduit opening/closing operating device 41.
, 42 and is firmly fixed. In this way, the operation section cover 14 is securely locked to the operation section 30 at the beginning of wrapping and at the end of wrapping. If the U-shaped portion 14d is further wrapped around the base of the light source connection flexible tube 36 from the state shown in FIG. 6, the wrapping of the operating portion 30 is completed.

FIG. 1 shows the mantle device fully attached to endoscope 200. The fluid delivery tubes 4 that collectively extend from the mouth support 3 of the sheath 100 pass outside the operating section cover 14;
It is branched into three branches at the middle of the operating section 30. As shown in FIG. 7, a tube support frame 15 for fixing the three tubes 4s, 4a, 4w in parallel over a short span is attached to the tubes 4s, 4a, 4w.

FIG. 7 shows how the tube support frame 15 is connected to the operating section 30.
It is a view seen from the side, and each tube 4s, 4a, 4w is fixed at both ends of the tube support frame 15, and is arranged in parallel without being fixed at the middle part. Reference numeral 15a denotes a pair of springy locking claws for removably locking the tube support frame 15 to the receiving portion 33 of the operating section 30.

FIG. 8 shows that the tube support frame 15 is attached to the receiving portion 33.
It shows a state in which it is attached, and shows a cross section of the air/water supply operating device 41 portion of the pipe opening/closing operating device.

As shown in FIG. 8, the tube support frame 15 is fixed to the receiving part 33 by the locking claw 15a catching on the back surface of the tip of the receiving part 33.

Since the locking claws 15a are elastically deformed inward (in the direction of the arrow), the tube support frame 15 is fixed in the state shown in FIG. 8 by simply pushing it into the receiving portion 33. The tube support frame 15 can be removed from the receiving portion 33 by elastically deforming the locking claw 15a inward (in the direction of the arrow) with a fingertip.

There is no hole in this part of the operation section cover 14, and the operation section cover 14 is not connected to the tube support frame 1.
5 and the receiving part 33, and is fixed to the operating part 30. The air and water supply tubes 4a and 4w are
It is crushed by the movable pins 41g and 41h with the operation section cover 14 sandwiched therebetween.

As shown in FIG. 8, the air/water supply operation button 4
A piston 41b directly connected to the piston 1a is provided in a cylinder 41c fixed to the operating section 30 so as to be movable forward and backward. 41s is a stopper that limits the forward and backward stroke.

The piston 41b is always urged outward by a first coil spring 41d and a second coil spring 41e having a stronger spring force. 41f is both springs 41d and 41e
Both springs 41d and 41e are inserted so as to receive one end of each spring.
This is an intermediate spring receiver provided between the two.

As also shown in FIG. 9, the piston 41b
A pair of movable pins 41g, one end of which is disposed so as to be movable forward and backward, facing the air and water supply tubes 4a and 4w.
41h is placed. And movable pins 41g, 4
Rollers 41i, 41j rotatably attached to 1h
is in contact with the side surface of the piston 41b, and under normal conditions (standby state), the air and water supply tubes 4a and 4w are both pushed and crushed by the movable pins 41g and 41h, and the conduit is closed.

FIG. 9 is an enlarged view of this state with the orientation changed, and the tube pressing parts D and E that press the tubes 4a and 4w are located on the tube support frame 15 side and on the movable pin 4.
The movable pins 41g and 41h are protruded parallel to each other from the opposite direction with a slight gap between them, and a gap F is formed on the back side of the tubes 4a and 4w at the tips of the movable pins 41g and 41h. There is.

[0044] Therefore, the tubes 4a and 4w are greatly deformed by being pushed by the movable pins 41g and 41h, and the inner cavities are completely collapsed between the tube pressing portions D and E.

Furthermore, as shown in FIG. 8, the piston 4
A large V-shaped recess 41k is formed in the middle of 1b. Therefore, if the air/water supply operation button 41a is
When the movable pin 41g on the air supply side is pushed to the position where the recess 41k is located, the roller 41i at the lower end of the movable pin 41g is pushed into the recess 41 due to the self-restoring force of the air supply tube 4a.
It regresses along the line k, and the passage of the air supply tube 4a opens. As a result, air is supplied to the distal end of the sheath 100.

[0046] Then, when the piston 41b is further pushed in to the deep position B and the recess 41k comes to the position of the movable pin 41h on the water supply side, the air supply tube 4a is closed again.
The water supply tube 4w opens. As a result, water is supplied to the tip of the sheath 100.

FIG. 10 shows the suction operating device 42 of the conduit opening/closing operating device, and since there is only one tube 4s to be operated, only one movable pin 42g is provided and the coil spring 42d is the same as the air/water supply operating device 41 except that there is only one. Therefore,
The explanation will be omitted. Here, by pushing the suction operation button 42a, suction is performed from the distal end of the sheath 100 via the suction tube 4s.

FIGS. 11 and 12 show XI- in FIG.
XI and XII-XII cross sections are shown. This position,
That is, at the grip position of the operating section 30, the air supply, water supply, and suction tubes are integrally formed as one tube 4. The operating section cover 14 is inserted into a guide groove 31a formed by partially protruding the surface of the synthetic resin body of the operating section 30 and recessing therein.

As shown in FIG. 12, eaves portions 31b are formed at both ends of the guide groove 31a to press the fitted tube 4 from the outside. The eaves section 31b prevents the tube 4 from coming off the guide groove 31a, so that the operation section 3 is held in place with the operation section cover 14 in between.
Fixed to 0. In other words, the operating section cover 14 is firmly fixed to the operating section 30 by the tube 4 at this portion. Therefore, the structure is simple and attachment/detachment work is also easy.

[0050] When attaching and detaching the tube 4 from this portion, it is only necessary to slightly elastically deform the tube 4.

FIG. 13 shows XIII-XII in FIG.
The figure shows a cross section I, and at the base of the light source connection flexible tube 36, three tubes 4s, 4a,
A guide groove 32a into which the tubes 4w are lined up and eaves portions 32b are formed on both sides of the center, and the three tubes 4s,
4a, 4w are fixed to the operating section 30 with the operating section cover 14 in between so as not to come off from the guide groove 32a. In other words, even in this portion, the operating section cover 14 is firmly fixed to the operating section 30 by the tubes 4s, 4a, and 4w.

According to the device of the embodiment configured as described above, when attaching the mantle device to the endoscope, air is first supplied into the sheath 100 from the air supply port 11, and then the sheath 100 is
Inflate the tube 1 and insert the endoscope insertion section 20 into the sheath 1.
00 and lock the state with the fixing screw 13. Then, as described above, in the steps shown in FIGS. 5, 6, and 1, the operation part cover 14 wraps the operation part 30, and the tube support frame 15 is pushed into the receiving part 33 as shown in FIG. At the same time as installing tubes 4, 4
s, 4a, and 4w into the guide grooves 31a and 32a to fix the operating section cover 14 to the operating section 30. Finally, the bending operation knob 38 is attached.

In this way, the tubes 4, 4s, 4a
, 4w are firmly fixed to the operating section 30 while being arranged outside the operating section cover 14, and the conduit opening/closing operating device 4
1 and 42, air supply, water supply, and suction operations can be performed.

[0054] After the endoscopic examination is completed, the endoscope sheathing device is removed from the endoscope in the reverse order as described above. That is, first, after removing the bending operation knob 38, the tubes 4, 4s, 4
a, 4w and the tube support frame 15 are removed from the operating section 30, and finally the operating section cover 14 is removed from the operating section 30.

[0055] Therefore, once the operating section cover 14 that encloses the operating section 30 is removed, there is no need to remove the tube or the like from the operating section 30, so there is no risk of contaminating the operating section 30.

Furthermore, in order to remove the operation section cover 14 from the operation section 30, it is only necessary to remove the tubes 4, 4s, 4a, and 4w, and there is no need to remove any other special fixing members, so the work is easy. Therefore, the possibility of contaminating the surrounding area is small.

[0057] To attach or remove the sheath 100 from the insertion section 20, use the sheath cover shown in Japanese Patent Laid-Open No. 3-37029, etc., and after unlocking the fixing screws 13, remove the outer tube 1 of the sheath 100. It is done by inflating the

It should be noted that the present invention is not limited to the above-mentioned embodiments. For example, as shown in FIG. It's okay. In that case, the operation section cover 114 is formed into a cylindrical shape as a whole, and when it is attached to and removed from the operation section 30, for example, as shown in FIG.
5, it is turned up toward the exterior tube 1 side.

Furthermore, as shown in FIG. 14, the operation unit cover 114 can be fixed simply by pressing it using a Velcro fastener (so-called Velcro) 115, and can be released by simply pulling it. You can do it like this.

Furthermore, in the present invention, the fluid delivery tube is not limited to one for air supply, water supply, and suction, but only one or two of them may be used, or it may be one for passing other fluids. It may be.

[0061] Furthermore, the endoscope applied to the present invention has air supply,
Water supply and suction operations may be performed using electric switches provided in the operation section, or so-called electronic endoscopes that use a solid-state image sensor in the observation optical system may be used. May be applied to

[0062]

[Effects of the Invention] According to the endoscope sheath device of the present invention, since the fluid delivery tube is placed outside the operation section cover, the operation section cover that encloses the operation section after the endoscopy is completed. should be removed from the control section last. Therefore, since there is no risk of dirty hands (gloves) touching the operating section cover touching the operating section, contamination of the operating section is prevented, and infection through the endoscope can be more completely prevented.

Furthermore, by fixing the operating section cover to the operating section using the fluid delivery tube, the structure is simple and the operation for attaching and removing the operating section cover is easy.
Furthermore, the risk of surrounding contamination is reduced.

[0064] Furthermore, if the opening/closing operation of the fluid delivery tube is performed from the operating section by sandwiching the operating section cover between the operating section and the tube, no matter how contaminated the tube side is, the operating section will remain intact. The side is not contaminated at all.

[Brief explanation of drawings]

FIG. 1 is a side perspective view of an embodiment.

FIG. 2 is a side perspective view of the endoscope of the embodiment.

FIG. 3 is a side cross-sectional view of the sheath of the example.

FIG. 4 is a side perspective view of the sheath of the example.

FIG. 5 is a side perspective view of the embodiment during installation of the operation section cover.

FIG. 6 is a side perspective view of the embodiment while the operation section cover is being attached.

FIG. 7 is a perspective view of the tube support frame of the embodiment.

FIG. 8 is a sectional view of the conduit opening/closing operation device of the embodiment.

FIG. 9 is a partial sectional view of the conduit opening/closing operation device of the embodiment.

FIG. 10 is a cross-sectional view of the conduit opening/closing operation device of the embodiment.

FIG. 11 is a sectional view taken along line XI-XI in FIG. 1 of the embodiment.

FIG. 12 is a sectional view taken along line XII-XII in FIG. 1 of the embodiment.

FIG. 13 is a sectional view taken along line XIII-XIII in FIG. 1 of the embodiment.

FIG. 14 is a side perspective view of an operation section cover of another embodiment.

FIG. 15 is a side perspective view of an operation section cover of another embodiment.

[Explanation of symbols]

4 Fluid delivery tube 14 Operation unit cover 20 Insertion part 30 Operation section 100 sheath

Claims (6)

[Claims] Claims: 1. A cylindrical sheath for covering an elongated endoscope insertion section so as to isolate it from the outside; and a cylindrical sheath for covering an operating section connected to a proximal end of the endoscope insertion section. an operating section cover that is connected to the proximal end of the sheath, and an operating section cover that passes through the sheath and communicates with the distal end of the sheath, and extends from the proximal end of the sheath to the outside of the operating section cover. A mantle device for an endoscope, characterized in that it is provided with a fluid delivery tube. 2. The endoscope sheath device according to claim 1, further comprising a fixing means for fixing the fluid delivery tube to the outer surface of the operation section cover. 3. The endoscope according to claim 2, wherein the fixing means is provided on the operating section, and fixes the operating section cover and the fluid delivery tube together from inside the operating section cover. Cloak device. 4. The endoscope sheath device according to claim 1, wherein the operating section is provided with a conduit opening/closing device for opening and closing the conduit of the fluid communication tube. 5. The pipe line opening/closing operation of the fluid communication tube by the pipe line opening/closing operation device is performed with the operation section cover being sandwiched between the operation section and the fluid communication tube. 4. The endoscope mantle device according to 4. 6. The endoscope jacket device according to claim 1, wherein an air inlet for supplying air into the sheath to inflate the sheath is covered by the operation section cover. .