JP3207991B2 - Endoscope device with endoscope cover - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention includes an endoscope cover for covering an insertion portion of an endoscope and the like, and a treatment tool raising device for raising a treatment tool or the like inserted into a channel of the endoscope cover. The present invention relates to an endoscope device of an endoscope cover type having a drive mechanism for a member at the distal end of the endoscope cover.

[0002]

2. Description of the Related Art In recent years, endoscopes have been widely used in the medical field and the like. When an endoscope used in the medical field is inserted into a living body, an observation window provided at a distal end portion of an insertion portion may not be sufficiently observed due to adhesion of a body fluid or the like. For this reason, the endoscope is provided with an air supply pipe or a water supply pipe so that a fluid such as a cleaning liquid or a cleaning gas can be sprayed on the observation window to remove body fluids or the like attached to the observation window by operation on the hand side. Have been. In some cases, a suction conduit for sucking and discharging unnecessary body fluids is provided. In some cases, a treatment tool channel is provided so that tissue can be collected with a biopsy forceps, or a treatment can be performed with a treatment tool.

[0003] Endoscopy requires the use of a clean endoscope that has been thoroughly cleaned and disinfected before the examination.

For this reason, in an endoscope provided with a conduit such as the air supply conduit or a treatment instrument channel, when used for a patient or the like, washing or sterilization treatment is performed to surely prevent infectious diseases and the like. Will be applied. However, it takes a long time to completely perform the washing and the sterilization, and thus there is a problem that the use efficiency of the endoscope is reduced.

[0005] Therefore, by using the endoscope itself in a state of being covered with the endoscope cover provided with the air supply / water supply conduit and the like, only the endoscope cover is disposable after use, and is replaced after use. However, there has been proposed an endoscope device of an endoscope cover type which does not require the sanitary consideration by keeping the endoscope itself clean.

As an endoscope device of an endoscope cover system,
For example, Japanese Patent Publication No. 2-57334 or U.S. Pat.
In Japanese Patent No. 3,162,190, an endoscope insertion portion is inserted into a cover, and the endoscope insertion portion is covered with the cover to be insulated from an external environment.

[0007] Such an endoscope with an endoscope cover system is as follows.
The insertion part is cleaned or sterilized beforehand. Then, while covering the insertion portion of the endoscope with the endoscope cover, the endoscope is inserted into the body cavity of the patient for inspection and treatment, and after use, the endoscope cover is removed and discarded. I will. In this way, by disposing the endoscope cover for each patient, the endoscope does not need to be cleaned and disinfected,
It is very easy to keep clean at all times. And
The endoscope can be used continuously without rewashing and disinfection.

Further, Japanese Patent Application Laid-Open No. 58-44033 discloses an endoscope adapter type treatment instrument introduction device having a covering means serving as an endoscope cover. In this device, the treatment device is provided outside the endoscope. The treatment tools inserted through the treatment tool guide tubes provided in parallel can be raised by a separate lifting operation lever.

[0009]

As an endoscope of the above-mentioned type of endoscope cover type having a treatment instrument channel or the like in the endoscope cover, for example, a treatment instrument such as a forceps inserted into the treatment instrument channel. However, it is not easy to dispose the treatment instrument raising device on the endoscope cover because of its complicated shape and mechanism.

[0010] In providing a treatment instrument raising device as a drive mechanism for a member at the tip of the cover to the endoscope of the endoscope cover system, for example, sterilization is performed and the endoscope is used repeatedly as in a normal endoscope. When the treatment tool raising lever for operating the treatment tool raising device is installed in the operation unit of the endoscope, the treatment tool raising lever and the treatment tool raising base are connected when the cover is attached to the cover endoscope. There is a problem that complicated connection work such as connecting the treatment instrument raising wire to the operation unit is required.

Further, in the case of using an apparatus disclosed in Japanese Patent Application Laid-Open No. 58-44033 in an endoscope of an endoscope cover type, the endoscope operating lever mounting portion is exposed to the outside. There is a problem that the operability is poor such as being obstructed at the time of operation, and furthermore, in this configuration, the endoscope of the endoscope cover type is expensive because the raising operation lever and the lever mounting portion are disposable.

The present invention has been made in view of these circumstances, and has a drive mechanism for a member at the distal end portion of an endoscope cover, such as a treatment tool raising device that raises a treatment tool inserted into a channel. In the above, an endoscope cover-type endoscope apparatus capable of improving workability when mounting the endoscope cover and operability of the endoscope, and being configured at a lower cost is provided. It is an object.

[0013]

An endoscope apparatus of an endoscope cover system according to the present invention includes an endoscope and an endoscope cover that covers at least an insertion portion of the endoscope. A driven member is provided at a distal end portion of the insertion portion of the endoscope cover, and a first transmission member connected to the driven member and operating the driven member extends toward the insertion portion of the endoscope cover. When the endoscope has an operation member for driving the driven member and an operation member connected to the operation member on the operation portion on the proximal end side of the insertion portion of the endoscope, and the endoscope cover is attached to the endoscope. A second transmission member that is detachably connected to the first transmission member to transmit the operation of the operation member, and that a connecting portion between the first transmission member and the second transmission member is It is provided on the insertion section side of the operation member.

[0014]

With the above arrangement, when the endoscope cover is mounted on the endoscope, the first transmission member for operating the driven member and the second transmission member for transmitting the operation of the operation member are connected, The driven member can be driven by the operating member.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 7 relate to a first embodiment of the present invention. FIG. 1 is an explanatory view showing an entire configuration of an endoscope device of an endoscope cover system, and FIG. 2 is a view showing an insertion portion cover portion of the endoscope cover. FIG. 3 is a perspective view showing the configuration of the distal end portion of the endoscope cover, and FIG. 4 is a diagram showing the configuration around the mouth portion near the endoscope cover and the operation section of the endoscope for the cover. FIG. 5 is a side view, and FIG. 5 is an explanatory view showing a configuration of a connecting portion inside an operating unit of the cover endoscope in a drive mechanism of a treatment instrument raising member of the endoscope cover, FIG.
7 is a cross-sectional view taken along line AA of FIG. 4, and is a cross-sectional view showing a configuration of a pinion gear portion in a drive mechanism of the treatment instrument raising member;
FIG. 3 is a configuration explanatory view showing a state in which a hand-side mouth portion of an endoscope cover is attached and fixed to an endoscope operation unit.

As shown in FIG. 1, an endoscope apparatus 1 of an endoscope cover system has an endoscope 2 of an endoscope cover system (hereinafter, referred to as a cover endoscope). The cover type endoscope 2 includes an endoscope cover with a channel (hereinafter, referred to as an endoscope cover) 3 provided with channels such as an air supply / water supply conduit, a suction conduit, and a treatment tool channel, and the endoscope. An endoscope for an endoscope cover attached to the mirror cover 3 (hereinafter, referred to as an endoscope for a cover) 4 is combined. When performing an endoscope inspection, the insertion portion of the cover endoscope 4 and the like are covered with a clean endoscope cover 3, and after the inspection, the endoscope cover 3 is discarded. The mirror 4 is characterized in that it is covered by a new clean endoscope cover 3 and is used repeatedly. This eliminates the need for cleaning and disinfecting the endoscope after the inspection.

The endoscope apparatus 1 includes the cover-type endoscope 2, a cart 5 in which various peripheral devices and the like to which the cover-type endoscope 2 is connected are provided, and the cover-type endoscope 2. And a cover holder 6 for holding the mirror 2.

The cart 5 includes, for example, a light source device 7, a video processor 8, a fluid control device 9, and an endoscope cover extender (hereinafter, referred to as an endoscope cover extender) used when the cover endoscope 4 is mounted on the endoscope cover 3. , An expander) 10 and the like are stored. A monitor 11 that receives an image signal from the video processor 8 and displays an endoscopic image is mounted on the upper surface of the cart 5.

The cover endoscope 4 has an operation section 13 which also serves as a large-diameter grip section at the proximal end of the elongated endoscope insertion section 12 on the hand side.
Are connected to each other, and a universal cord 14 extends from a side of the operation unit 13. A connector 15 is provided at an end of the universal cord 14.

The light source device 7 is detachably connected to the cover endoscope 4 via the connector 15, and supplies illumination light to the endoscope. The video processor 8 is detachably connected to the cover endoscope 4 via a signal cable 16 extending from the side of the connector 15, and drives the image pickup unit built in the cover endoscope 4. , And a signal output from the image pickup means, and the signal is converted into a standard video signal and output to the monitor 11.

The dilator 10 is connected to an expansion tube 17 through which the endoscope cover 3 is connected.
The endoscope cover 3 can be easily attached to or removed from the endoscope cover 3 by feeding air into the endoscope and expanding the endoscope. When the endoscope cover 3 is attached to or detached from the cover endoscope 4, the cover holder 6 is used.
Thus, the base end of the endoscope cover 3 is held, and the cover endoscope 4 is inserted or removed.

The endoscope cover 3 includes a soft insertion portion cover portion 18, a thin and soft operation portion cover portion 19 made of a polymer material such as vinyl chloride, and a universal code cover portion 20. The endoscope insertion section 12, the operation section 13, and the universal cord 14 of the cover endoscope 4 are respectively covered.

The fluid control device 9 includes an air supply control valve 21, a water supply control valve 22, and a suction control valve 23.
The suction is controlled by these solenoid valves. The air supply control valve 21, the water supply control valve 22, and the suction control valve 23 are connected to an air supply line 24, a water supply line 25, and a suction line 26 extending from the insertion portion cover 18, respectively.

A suction tube 27 is connected to the other end of the suction control valve 23, and a suction device (not shown) is connected to an end of the suction tube 27, so that unnecessary body fluids and the like are suctioned from the end of the endoscope. ing. A water supply tube 28 is connected to the other side of the water supply control valve 22, and a water supply tank 29 is connected to a distal end thereof. Further, two air supply tubes 30 extend from the fluid control device 9, and the air supply control valve 2
1 and the water supply tank 29.

FIG. 2 shows the insertion portion cover 1 of the endoscope cover 3.
8 shows the configuration of FIG. The insertion portion cover portion 18 is provided with an endoscope operation portion fixing mouth portion (hereinafter referred to as a mouth portion) for connecting and fixing the cover tip configuration portion 31, the cover outer skin 32, and the endoscope operation portion 13 from the front end side. 33) are hermetically connected. The cover distal end portion 31 is provided with an observation opening 34 and a channel opening 35. A transparent cover glass is disposed in the observation opening 34, and an observation window and an illumination window of an endoscope inserted into the cover are opposed to each other. Can be observed. In addition, in the mouth part 33,
A treatment tool insertion port 36 communicating with a treatment tool channel provided inside is provided.

FIG. 3 shows the configuration of the distal end portion 31 of the endoscope cover. The distal end configuration portion 31 is made of a hard resin or the like, communicates with an endoscope insertion channel provided in the insertion portion cover portion 18, and has an endoscope distal end portion insertion hole 37 into which the endoscope distal end portion fits, A channel tip 38 communicating with the treatment instrument channel is provided, and the tip of the treatment instrument channel opens to the outside through the channel opening 35. Observation opening 34 beside endoscope insertion hole 37
Is provided with a cover glass 39 for transmitting light and isolating the distal end of the endoscope from the external environment.

FIG. 4 shows the structure of the mouth body near the endoscope cover and the surroundings of the operation section of the cover endoscope mounted on the mouth body.

The endoscope operation section 13 includes an endoscope insertion section 12.
A rotatable bending knob 41 for bending the distal end is provided on the side, and a treatment instrument raising knob 42 serving as an operation member that rotates coaxially with the bending knob 41 is provided. . By operating the treatment tool raising knob 42, a treatment tool raising member, which will be described later, provided at the distal end portion of the endoscope cover is driven, and the treatment tool inserted through the channel of the endoscope cover is raised and inverted. I can do it.

Further, unlike the rotation axis of the treatment instrument raising knob 42, a side portion of the endoscope operation section 13 is different from the endoscope insertion section 12.
Outer pinion gear 4 with partial teeth in the side position
3 is provided rotatably. On the other hand, a rack gear 44 slidable in the axial direction of the insertion portion is provided inside the mouth portion 33 on the base end side of the insertion portion cover portion 18 of the endoscope cover. A first transmission member is formed by connecting to the treatment instrument raising wire 45 inserted through the inside of the treatment instrument 18, and the treatment instrument raising wire 45 is a driven member at the distal end portion of the cover, which is a treatment tool elevation (not shown). It is designed to be connected to a member.

FIG. 5 shows the structure of the connecting portion inside the endoscope operating section 13 serving as the second transmission member in the drive mechanism of the treatment tool raising member of the endoscope cover including the treatment tool raising knob 42.
Shown in

Inside the endoscope operating section 13, a proximal end 42a of the treatment instrument raising knob 42 is formed in a disk shape around the rotation shaft 46, and is connected to a peripheral edge of the proximal end 42a. One end of the link 47 is connected by a pin 48.
The other end of the connection link 47 is connected to the slider 50 housed in the guide groove 49 by a pin 51. The slider 50 has a rod 53 having a rack gear 52 engraved on the endoscope insertion portion side. The rack gear 52 meshes with an inner pinion gear 54 connected to the outer pinion gear 43.

As shown in FIG. 6, the pinion gear section includes an outer pinion gear 43 and an inner pinion gear 54 connected to each other via an operation section case 13a, and the pinion gear section and the operation section case 13a are connected to each other. A seal member 55 is interposed therebetween so as to rotate the inner and outer pinion gears while maintaining the airtight state inside the operation unit.

When the cover type endoscope configured as described above is used for endoscopic inspection, first, the mouth 33 of the insertion portion cover 18 of the endoscope cover 3 is attached to the cover holder 6. The insertion portion cover 18 is held by being locked, and the insertion portion cover 18 is attached to the endoscope insertion portion 12 by inserting the endoscope insertion portion 12 into the endoscope insertion channel of the cover. Then, the operation section cover 19 and the universal code cover section 20 are attached to the operation section 13 and the universal cord 14 of the cover endoscope, respectively, and the cover endoscope 4 is covered with the endoscope cover 3 so as to be inside. Observation with an endoscope, treatment, etc. are performed.

When attaching the insertion section cover 18 to the endoscope insertion section 12, the endoscope insertion section 12 is inserted into the insertion section cover 18 up to the base end and is inserted into the mouth section 33 of the cover. The endoscope operation section 13 is mounted and fixed. At this time, when the treatment instrument raising knob 42 is set to the position at the time of mounting the mouth portion as shown in FIG. 7, the outer pinion gear 43 of the endoscope operation section 13 has the toothless portion as the rack gear of the mouth portion 33. Opposite to 44, the mouth part 33 can be mounted without the gear part of the rack and the pinion getting caught. From this state, the treatment instrument raising knob 42
Is turned, the slider 50 moves in the direction of the guide groove 49 by the connection link 47, and the rack gear 52 moves forward and backward. The inner pinion gear 54 and the outer pinion gear 43 rotate by the forward and backward movement of the rack gear 52.
The pinion gear portion formed by the inner pinion gear 54 and the outer pinion gear 43 is rotatable by the seal member 55 while maintaining the airtight state inside the operation portion.

When the outer pinion gear 43 is rotated by operating the treatment tool raising knob 42 in this manner, the outer pinion gear 4
3 and the rack gear 44 in the mouth part 33 mesh with each other, and the treatment tool raising wire 42 can be pushed and pulled by the treatment tool raising knob 42, and the treatment tool raising wire 45 inserted into the insertion portion cover portion is provided at the distal end of the cover (not shown). The treatment instrument raising member can be driven.

When the mouth portion 33 of the endoscope cover is separated from the endoscope operation portion 13 after use, the treatment instrument raising knob 42 is set at the same position as when the attachment is reattached. Rack gear 44 inside and outer pinion gear 43 of endoscope operation unit 13
By releasing the connection lock mechanism between the mouth unit and the endoscope operation unit (not shown), the two can be separated from each other.

As described above, in the configuration of the present embodiment, the drive mechanism of the treatment instrument raising member is not exposed to the outer surface of the endoscope operation section with the endoscope cover attached. In addition, the grip and the operability of the operation section are good, and the watertightness can be maintained, so that the endoscope can be easily cleaned. In addition, since the connection portion of the drive mechanism in the operation portion can be provided at a position away from the grip portion, it is easy to grip,
Operability can be improved. Furthermore, the connection between the treatment tool raising wire and the treatment tool raising knob can be easily performed only by attaching / detaching the mouth of the endoscope cover, and complicated connection work is not required. However, workability is good.

Therefore, in a cover-type endoscope having a driving mechanism for a member at the distal end portion of the endoscope cover such as a treatment instrument raising device, the workability at the time of mounting the endoscope cover and the operation of the endoscope are improved. In addition, only the treatment tool raising wire is provided in the drive mechanism of the treatment tool raising member on the side of the disposable endoscope cover, and members such as the treatment tool raising knob are not provided. Therefore, the cover-type endoscope can be configured at low cost.

Next, FIGS. 8 to 10 show a modified example of the connecting portion provided inside the endoscope operating portion of the driving mechanism of the treatment instrument raising member.

The first modification shown in FIG. 8 has a configuration in which the driving force generated by the rotation of the treatment instrument raising knob is transmitted to the outer pinion gear by a chain, and the treatment instrument raising knob 56 includes a disk-shaped base. A knob-side sprocket 57 is fixed so as to rotate coaxially with the rotation shaft 46 at the end 56a. A pinion-side sprocket 58 connected to a rotation shaft of the outer pinion gear 43 is disposed at a position corresponding to the inner pinion gear of the embodiment shown in FIG. An annular chain 59 is stretched between the two sprockets 57 and 58, and is configured to transmit the movement of the treatment instrument raising knob 56 to the outer pinion gear 43 and drive the outer pinion gear 43. .

The second modification shown in FIG. 9 has a structure in which the driving force generated by the rotation of the treatment instrument raising knob is transmitted to the outer pinion gear by a link. A link 62 is rotatably connected by a pin 61. The other end of the link 62 is connected by a pin 64 to a peripheral edge of a rotary plate 63 connected to the rotation shaft of the outer pinion gear 43, and transmits the movement of the treatment instrument raising knob 60 to the outer pinion gear 43. The outer pinion gear 43 is driven.

A third modification shown in FIG. 10 is a configuration in which the driving force generated by the rotation of the treatment instrument raising knob is transmitted to the outer pinion gear by rods having rack gears at both ends. A pinion gear 66 is provided at the base end coaxially with the rotation shaft 46. A rod 68 having rack gears 67 a and 67 b at both ends meshes with the pinion gear 66, and a rack gear 67 b at the other end of the rod 68 meshes with an inner pinion gear 69 connected to the rotation shaft of the outer pinion gear 43. I have. In this configuration, the rotation of the treatment instrument raising knob 65 causes the rod 68 to slide, whereby the inner pinion gear 69 on the distal end side of the operation unit rotates, and the outer pinion gear 43 rotates with this. I have.

As described above, the configuration of the connecting portion inside the endoscope operating portion of the drive mechanism of the treatment instrument raising member can be variously modified, and similarly, the structure can be changed by operating the treatment instrument raising knob. The driving force can be transmitted by rotating the pinion gear.

FIGS. 11 and 12 relate to a second embodiment of the present invention. FIG. 11 is a side view and a view showing the structure around the mouth of the endoscope cover and the operation section of the endoscope for the cover. FIG. 12 is a configuration explanatory view showing a state in which the proximal mouth portion of the endoscope cover is attached and fixed to the endoscope operation section.

In the second embodiment, the connection configuration of the drive mechanism of the treatment instrument raising member between the mouth of the endoscope cover and the endoscope operation section is changed. Only parts different from the first embodiment are shown and described.

The endoscope operating section 71 is provided with a treatment instrument raising knob 42 as in the first embodiment, and is rotated by operating the treatment instrument raising knob 42 on the side of the insertion section. A substantially rectangular connection terminal 72 is provided so as to protrude from the operation unit. On the other hand, a plate-shaped connecting member 74 having one end rotatably connected to the rear end of the treatment instrument raising wire 45 is provided at the mouth 73 of the endoscope cover. The connecting member 74 is
On the opposite side to the wire connection portion, there is provided a fitting hole 75 having the same shape as the outer shape of the connection terminal 72, and the connection member 74 and the connection terminal 72 are fitted by fitting the connection terminal 72 into the fitting hole 75. And can be connected. The mouth part 73
Has a notch so that the connection between the connecting member 74 and the connection terminal 72 can be easily performed.

When the endoscope operation section 71 is mounted and fixed to the mouth section 73 of the endoscope cover, the fitting hole 75 of the connecting member 74 is used.
And the connection terminal 72 are fitted together to connect and connect them as shown in FIG. In this state, when the treatment instrument raising knob 42 is rotated, the connection terminal 72 and the connecting member 74 rotate in accordance with the movement of the knob, and the treatment instrument raising wire 45 is pushed and pulled by the connecting member 74. Thus, the treatment instrument raising member provided at the cover distal end can be driven.

FIG. 13 shows the configuration of the mouth body near the endoscope cover and the surroundings of the operation unit of the endoscope for a cover according to the third embodiment of the present invention.

The third embodiment is a modification of the second embodiment.
A treatment instrument raising knob 4 is provided on the side of the insertion section of the endoscope operation section 71.
The connecting member 7 which rotates around one end by the operation 2
6 are provided. At the other end of the connecting member 76, a fixing screw 77 for fixing the rear end of the treatment instrument raising wire 45 is provided.

When attaching and fixing the endoscope operating section 71 to the mouth section 73 of the endoscope cover, the rear end of the treatment instrument raising wire 45 is inserted into the connecting member 76 and the fixing screw 77 is tightened. Thus, the treatment instrument raising wire 45 and the connection member 76 are connected and fixed. When the treatment instrument raising knob 42 is rotated in this state, the connecting member 76 rotates, and the treatment instrument raising wire 45 is rotated.
Can be pushed and pulled. In this configuration, the length of the treatment instrument raising wire 45 can be adjusted.

In the configuration of the second and third embodiments described above, similarly to the first embodiment, the connection between the treatment tool raising wire and the treatment tool raising knob when the endoscope cover is attached is easily performed. Operability can be improved.

FIGS. 14 and 15 relate to a fourth embodiment of the present invention. FIG. 14 shows a drive mechanism of a treatment instrument raising member in a mouth portion on the proximal side of an endoscope cover and an operation portion of the endoscope for a cover. FIG. 15 is an enlarged side view of the connection configuration of FIG.
It is the arrow view seen from the direction.

The fourth embodiment is different from the above-described embodiment in that the connection structure of the drive mechanism of the treatment instrument raising member between the mouth of the endoscope cover and the endoscope operation section is shown. is there.

The endoscope operating section 80 is provided with a slider 81 protruding in a U-shape and movable in the axial direction of the insertion section, and a guide groove 82 for guiding the slider 81. Thereby, the slider 81 slides along the guide groove 82. This slider 81
The rotation of the treatment instrument raising knob is converted into a linear motion by the link mechanism or the rack and pinion mechanism described above. A connecting member 84 connected to the rear end of the treatment instrument raising wire 45 is provided on the mouth portion 83 of the endoscope cover,
It is positioned so as to be movable in the axial direction of the insertion portion in a fitted state in a guide hole 85 formed in the mouth portion 83. The connecting member 84 has a claw portion 86 that engages with the slider 81. The claw portion 86 is engaged with the U-shaped groove of the slider 81 from the side, so that the slider 81 and the connecting member 84 are connected. It is configured to be.

When the endoscope operating section 80 is attached and fixed to the mouth section 83 of the endoscope cover, when the distal end side of the endoscope operating section 80 is inserted into the mouth section 83, the connecting member 84 claws 8
6, the connecting member 84 is elastically deformed and rides over the convex portion of the slider 81, so that the slider 81 and the connecting member 84 are connected to each other. When the treatment instrument raising knob is rotated in this state, the slider 81 moves along the guide groove 82, and
The connecting member 84 also moves in conjunction with the movement of 1, and the treatment instrument raising wire 45 is pushed and pulled. Thus, the treatment instrument raising member provided at the cover distal end can be driven.

At this time, since the connecting member 84 is positioned in the guide hole 85 in the mouth part 83, it does not normally come out of the engaged state. However, when removing the cover, the operator manually connects the cover. When the release lever 87 extending from the member 84 is pressed down, the connection member 84 is elastically deformed and the engagement is released, so that the mouth part 83 can be easily removed from the operation unit 80.

As described above, also in the configuration of the present embodiment, the connection between the treatment tool raising wire and the treatment tool raising knob when the endoscope cover is attached can be easily performed as in the first embodiment. , Workability can be improved.

Next, the configuration of the treatment instrument raising device provided inside the channel opening 35 in the distal end portion 31 of the endoscope cover will be described.

A treatment instrument channel tube 90 for inserting a treatment instrument and the like is inserted through the insertion portion cover of the endoscope cover, and as shown in FIG.
0 a is exposed from the channel opening 35 of the cover distal end component 31. In the present embodiment, the tube tip 90a
Also serves as a treatment instrument raising member, the distal end of the treatment instrument raising wire 45 is connected to the treatment instrument raising member, and the treatment tool raising member is bent by pushing and pulling the tube distal end portion 90a. A treatment instrument raising device that rises and inverts is configured. A plurality of slits 91 are formed on the side of the tube distal end portion 90a to facilitate bending of the tube distal end portion 90a.

Referring to FIG. 17, a description will be given of a method of connecting each member at a connection portion between the channel tube 90 and the treatment instrument raising wire 45.

A first method shown in FIG. 17A is a method in which a distal end ring 92a in which the distal end of a treatment instrument raising wire 45 is connected and fixed.
Is fitted into the channel tube 90 from the outside. In this case, the inner diameter of the tip ring 92a is smaller than the outer diameter of the channel tube 90 and larger than the inner diameter of the tube, and a heated bar-shaped core 93a is inserted into the tube when the ring is fitted. Thus, while the inner diameter of the channel tube 90 is maintained, the outside of the resin-made channel tube 90 is compressed and deformed, and the distal end ring 92a fits therein. The wire 45 can be fixed, and the connection operation can be performed easily and reliably. In addition, it is possible to prevent the diameter of the channel end portion from increasing.

A second method shown in FIG. 17B is a method in which a distal end ring 92b to which the distal end of the treatment instrument raising wire 45 is connected and fixed.
Are fitted inside the channel tube 90. In this case, the inner diameter of the distal end ring 92b is made substantially equal to the inner diameter of the channel tube 90, and the outer diameter of the channel tube 90 is regulated by mounting a heated pipe-shaped core 93b outside the tube when the ring is fitted. To As a result, while the outer diameter of the channel tube 90 is maintained, the inside of the channel tube 90 is compressed and deformed, and the distal end ring 92b fits in the channel tube 90.
, The treatment instrument raising wire 45 can be fixed.

FIGS. 18 to 20 show a method of connecting and fixing the distal end portion of the treatment instrument raising wire 45 to the distal end ring 92. FIG.

As shown in FIG. 18, the treatment instrument raising wire 4
A first method of connecting and fixing to the distal end ring 92 with the end face of the distal end 5 abutting, as shown in FIG. 20, a third method of winding the distal end portion of the treatment instrument raising wire 45 around substantially the entire outer circumference of the distal end ring 92 and connecting and fixing the same is considered. The distal ring 92 and the treatment instrument raising wire 45 are fixed by welding, bonding, or the like.

According to these connection and fixing methods, the treatment instrument raising wire can be fixed to the distal end portion of the channel tube with a simple structure, and when the welded or bonded portion is shortened as shown in FIGS. The tip portion can be reduced in size, and as shown in FIG. 20, the welded or bonded portion is lengthened, and the closer to the entire circumference of the tip ring, the more secure the fixation becomes.

FIGS. 21 to 24 show a method for directly connecting and fixing the treatment instrument raising wire 45 to the channel tube 90. FIG.

In the first method shown in FIG. 21, when the treatment instrument raising wire 45 is wound about 先端 of the circumference of the tube distal end portion 90a, the treatment instrument raising wire 45 is inserted into the hole 94 formed in the channel tube 90. The wire is fixed to the tube by passing it through the distal end portion of the tube 45.

In the second method shown in FIG. 22, the treatment instrument raising wire 45 is wound around the tube distal end 90a once, and then the distal end of the wire is entangled and adhered and fixed to the tube.

In the third method shown in FIG. 23, the distal end of the treatment instrument raising wire 45 is formed into a tightly wound coil shape, and is adhered and fixed to the tube distal end 90a. In this case, the bonding margin increases, and bonding and fixing can be performed more reliably.

The fourth method shown in FIG. 24 is a modification of the third method, in which a spiral groove 95 is formed on the channel tube 90 side to form a tightly wound coil. By winding the leading end of the 45, fixing is possible without bonding. In this case, there is no problem even if the bonding operation is performed.

When the connection and fixing method shown in FIGS. 21 to 24 is used, the number of components can be minimized without providing a tip ring or the like, so that the cost can be reduced.

Next, FIGS. 25 to 27 show examples of the configuration of an endoscope cover mounted on the endoscope 4 for a cover.

The endoscope cover 96 is attached to the insertion portion cover 18.
On the base end side, an operation section cover 97 which is continuous with the mouth section 33 and serves as an operation section cover section and a universal code cover section is provided. A fixing tape 98 having an adhesive portion for fixing the cover is provided at an end of the operation unit cover 97.

When attaching the endoscope cover 96 to the cover endoscope 4, as shown in FIG. 25, the operation section cover 97 is folded in a bellows shape to be small, and the insertion section cover section 1 is provided.
The endoscope insertion section is inserted into the section 8, and the mouth section 33 is attached and fixed to the endoscope operation section 13. Then, as shown in FIG. 26, the user extends the operation unit cover 97 by gripping a fixing tape 98 or the like provided at an end of the operation unit cover 97, and covers the endoscope from the universal cord 14 to the connector unit 15 to fix the fixing tape. The cover end is fixed to the light source device 7 by 98.

At this time, at a substantially central portion of the universal cord 14, a fixing member 99 for fixing the cover, which is made of a detachable material such as a surface bonding tape, is provided on the operation portion cover 97 and the universal cord 14, and the cover is fixed. Keep it.

When removing the endoscope cover 96, see FIG.
As shown in FIG. 7, after the fixing tape 98 at the end of the operation section cover is removed, the operation section cover 9
The cover is attached and detached so that 7 is folded back toward the endoscope operation section.

According to such a configuration of the endoscope cover,
The insertion part cover and the operation part cover can be easily attached to and detached from the endoscope, and when the cover is attached or detached, it can be removed with the dirty outer surface side of the cover facing inside. The cover is easy to manage.

The present invention is not limited to the drive mechanism for the treatment instrument raising member of the endoscope cover shown in the above embodiment, and the driven member provided at the distal end of the cover may be a member other than the treatment tool raising member. A liquid tube, a wiper for wiping a cover glass, or the like may be used, and the same configuration can be applied to the drive mechanism of these driven members.

[0079]

As described above, according to the present invention, there is provided a device having a drive mechanism for a member at the distal end portion of an endoscope cover, such as a treatment tool raising device for raising a treatment tool inserted into a channel, Workability when attaching the endoscope cover and operability of the endoscope can be improved, and there is an effect that the configuration can be further reduced.

[Brief description of the drawings]

FIG. 1 to FIG. 7 relate to a first embodiment of the present invention,
FIG. 1 is an explanatory diagram showing the entire configuration of an endoscope apparatus of an endoscope cover type.

FIG. 2 is a perspective view showing a configuration of an insertion portion cover portion of the endoscope cover.

FIG. 3 is a perspective view showing a configuration of a distal end portion of an endoscope cover.

FIG. 4 is a side view showing the configuration of the mouth body near the endoscope cover and the vicinity of an operation unit of the endoscope for the cover;

FIG. 5 is an explanatory diagram showing a configuration of a connecting portion inside an operation unit of the cover endoscope in a drive mechanism of a treatment instrument raising member of the endoscope cover.

6 is a cross-sectional view taken along the line AA of FIG. 4, and is a cross-sectional view showing a configuration of a pinion gear portion in a driving mechanism of the treatment instrument raising member.

FIG. 7 is a configuration explanatory view showing a state in which a proximal mouth portion of an endoscope cover is attached and fixed to an endoscope operation unit;

FIG. 8 is a configuration explanatory view showing a configuration of a first modified example of a connecting portion provided inside the endoscope operation portion of the drive mechanism of the treatment instrument raising member.

FIG. 9 is a configuration explanatory view showing a configuration of a second modified example of a connecting portion provided inside the endoscope operation portion of the drive mechanism of the treatment instrument raising member.

FIG. 10 is a configuration explanatory view showing a configuration of a third modified example of a connecting portion provided inside the endoscope operation portion of the drive mechanism of the treatment instrument raising member.

FIGS. 11 and 12 relate to a second embodiment of the present invention, and FIG. 11 is a side view showing a configuration of a mouth part near an endoscope cover and an operation unit of the cover endoscope;

FIG. 12 is a configuration explanatory view showing a state in which a proximal mouth portion of an endoscope cover is attached and fixed to an endoscope operation unit;

FIG. 13 is an explanatory diagram showing a configuration around a mouth portion on the proximal side of an endoscope cover and an operation unit of the endoscope for a cover according to a third embodiment of the present invention.

FIGS. 14 and 15 relate to a fourth embodiment of the present invention, and FIG. 14 is a view showing the drive of the treatment instrument raising member in the mouth portion near the endoscope cover and the operation portion of the endoscope for the cover. Side view showing an enlarged view of the connection configuration of the mechanism

15 is a view as seen from the direction A in FIG. 14;

FIG. 16 is a cross-sectional view showing the configuration of a treatment instrument raising device provided inside the channel opening in the distal end component of the endoscope cover.

FIG. 17 is an explanatory diagram showing a connection method of each member at a connection portion between the channel tube and the treatment instrument raising wire.

FIG. 18 is an explanatory view showing a first method of connecting and fixing the distal end portion of the treatment instrument raising wire to the distal end ring attached to the channel tube.

FIG. 19 is an explanatory view showing a second method of connecting and fixing the distal end portion of the treatment instrument raising wire to the distal end ring attached to the channel tube.

FIG. 20 is an explanatory view showing a third method of connecting and fixing the distal end portion of the treatment instrument raising wire to the distal end ring attached to the channel tube.

FIG. 21 is an explanatory view showing a first method of directly connecting and fixing a treatment instrument raising wire to a channel tube.

FIG. 22 is an explanatory view showing a second method of directly connecting and fixing the treatment instrument raising wire to the channel tube.

FIG. 23 is an explanatory view showing a third method of directly connecting and fixing the treatment instrument raising wire to the channel tube.

FIG. 24 is an explanatory view showing a fourth method of connecting and fixing the treatment instrument raising wire directly to the channel tube.

25 to 27 show an example of the configuration of an endoscope cover, and FIG. 25 shows a state in which an insertion portion cover of the endoscope cover is mounted on the endoscope for cover. Configuration diagram

FIG. 26 is an explanatory diagram showing a state in which the insertion section cover and the operation section cover of the endoscope cover are mounted on the cover endoscope;

FIG. 27 is an explanatory diagram showing a state when an endoscope cover is removed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 2 ... Cover type endoscope 3 ... Endoscope cover 4 ... Cover endoscope 12 ... Endoscope insertion part 13 ... Endoscope operation part 18 ... Insertion part cover part 33 ... Mouth part 42 ... Upper knob 43 ... Outer pinion gear 44 ... Rack gear 45 ... Treatment tool raising wire 47 ... Connecting link 50 ... Slider 53 ... Rod 54 ... Inner pinion gear

Claims (1)

(57) [Claims] 1. An endoscope device of an endoscope cover type having an endoscope and an endoscope cover for covering at least an insertion portion of the endoscope, wherein an end portion of the insertion portion of the endoscope cover is provided. A first transmission member connected to the driven member and operating the driven member is extended near the insertion portion of the endoscope cover, and the insertion portion base of the endoscope is provided. An operation member for driving the driven member, and an operation member connected to the operation member;
A second transmission member that is detachably connected to the first transmission member when the endoscope cover is attached to the endoscope and transmits the operation of the operation member, and the first transmission member An endoscope apparatus of an endoscope cover type, wherein a connecting portion between a transmitting member and the second transmitting member is provided on an insertion portion side of the operation member.