JPH0661203U - Endoscope cover type endoscope device - Google Patents

Abstract

(57) [Abstract] [Purpose] In an endoscope apparatus of an endoscope cover system, when the insertion portion is inserted into an object to be inspected, buckling on the proximal side of the insertion portion is prevented to improve insertability. . [Structure] An endoscope apparatus of an endoscope cover system is configured to include an endoscope for a cover and an endoscope cover mounted to cover the endoscope. In the endoscope cover, the insertion portion cover portion 22 to be attached to the insertion portion of the cover endoscope is located near the end portion on the endoscope operation portion side, that is, the endoscope operation portion at the proximal end portion of the insertion portion cover outer skin 31. In the vicinity of the fixing mouth portion 30, an insertion portion breakage prevention member 70, which is made of an elastic member and is formed in a cylindrical shape and has a tapered outer side, is provided to prevent buckling of the insertion portion of the endoscope device. ing.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an endoscope apparatus of an endoscope cover type that uses an endoscope cover for preventing contamination of an endoscope.

[0002]

[Prior 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, the observation window provided at the distal end of the insertion part may not be sufficiently observed due to the adherence of body fluid or the like. For this reason, the endoscope can be operated by the operator's hand to spray fluid such as cleaning liquid and cleaning gas onto the observation window to remove the body fluid and the like adhering to the observation window. Is provided. There is also a suction line for sucking and discharging unnecessary body fluids. In addition, a forceps channel (treatment instrument channel) is provided so that tissue can be collected with a biopsy forceps or a medical treatment with a treatment instrument can be performed.

For endoscopic examination, it is necessary to use a clean endoscope that has been thoroughly washed and disinfected before the examination.

Therefore, in the case of an endoscope provided with a conduit such as the air supply conduit or a forceps channel, when it is used for a patient or the like, cleaning or sterilization treatment must be performed in order to reliably prevent infections and the like. Is given. However, since it takes time to completely perform cleaning or sterilization, there is a problem that the use efficiency of the endoscope is reduced.

Therefore, by using the endoscope itself covered with the endoscope cover, only the endoscope cover is replaced as a disposable after use so that the endoscope itself does not become dirty even after use. There has been proposed an endoscope cover type endoscope apparatus which does not require cleaning or sterilization.

As an endoscope apparatus of an endoscope cover system, for example, in Japanese Patent Publication No. 2-54734 or US Pat. No. 3,162,190, the endoscope insertion portion is inserted into the cover, It is disclosed that the endoscope insertion portion is covered to be insulated from the external environment.

In such an endoscope of the endoscope cover type, the insertion portion thereof is washed or sterilized in advance in advance. Then, with the endoscope cover covering the insertion part of the endoscope, etc., insert the endoscope into the body cavity of the patient for inspection and treatment, and after use, remove the endoscope cover and discard. Resulting in. In this way, by disposing the endoscope cover for each patient, the endoscope does not need to be washed and disinfected and can be kept clean at all times, which is very convenient. And the endoscope can be used continuously without re-cleaning and re-disinfecting.

[0008]

[Problems to be solved by the device]

 However, in the endoscope device of the endoscope cover type as described above, conventionally, no proposal has been made regarding the configuration, material, or the like that affects the characteristics of the insertion portion such as flexibility.

Therefore, when the insertion portion of the endoscope apparatus of the endoscope cover system is inserted deeply inside the inspection object, when the insertion portion is pushed into the body cavity, the insertion portion is bent at the hand side. There was a problem that it could not be easily inserted because it got stuck. In addition, if the insertion part is excessively curved when it is inserted into the inspection object, there is a risk that the insertion part of the endoscope will buckle in the vicinity of the proximal side operation part, etc. was there.

The present invention has been made in view of these circumstances, and it is possible to prevent buckling of the insertion portion on the proximal side when inserting the insertion portion into an inspection object and to improve the insertability. It is an object of the present invention to provide an endoscope device of an endoscope cover system that can be improved.

[0011]

[Means and Actions for Solving the Problems]

 An endoscope apparatus according to the present invention is an endoscope cover type endoscope apparatus having an endoscope and an endoscope cover that covers at least the insertion portion of the endoscope. A buckling prevention mechanism for the endoscope cover or the insertion portion of the endoscope is provided near the end portion on the endoscope operation portion side.

[0012]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. 1 to 6 relate to a first embodiment of the present invention, FIG. 1 is an explanatory view showing the overall configuration of an endoscope device of an endoscope cover system, and FIG. 2 is a cover to be inserted into the endoscope cover. FIG. 3 is an explanatory view showing the entire structure of the endoscope, FIG. 3 is a sectional view showing the structure of the insertion part of the endoscope device of the endoscope cover system, and FIG. 4 is a perspective view showing the structure of the cover tip of the insertion part cover part. FIG. 5 is a perspective view showing the configuration of the insertion portion bending prevention member, and FIG. 6 is an explanatory diagram showing the configuration of the base end portion of the insertion portion cover portion with the cover endoscope inserted.

As shown in FIG. 1, an endoscope cover type endoscope apparatus 1 is an apparatus having an endoscope cover type endoscope (hereinafter, abbreviated as a cover type endoscope) 2.

The cover type endoscope 2 includes an endoscope cover (hereinafter abbreviated as a cover) 3 with a channel and an endoscope cover endoscope (hereinafter referred to as a cover) attached to the cover 3. (Abbreviated as an endoscope) 4. When performing an endoscopic inspection, the insertion portion of the cover endoscope 4 is covered by the clean cover 3, and the cover 3 is discarded after the inspection, while the cover endoscope 4 is replaced with a new clean one. It is characterized by being covered with a transparent cover 3 and used repeatedly. This eliminates the need for cleaning and disinfecting the endoscope after the examination.

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 installed, and the cover-type endoscope 2 And a cover holder 6 for holding the.

The cart 5 has, for example, a light source device 7, a video processor 8, a fluid control device 9, and a channel-equipped endoscope cover extender (hereinafter referred to as a cover endoscope 4) used when the cover endoscope 4 is attached to the cover 3. , Abbreviated as dilator) 10 and the like. A monitor 11 is mounted on the upper surface of the cart 5 to receive a video signal from the video processor 8 and display an endoscopic image.

In the cover endoscope 4, the operation portion 12 having a large-diameter grip portion is continuously provided at the proximal end portion of the elongated endoscope insertion portion 14 on the proximal side, and the universal cord is provided from the side portion of the operation portion 12. 13 extends, and a connector 19 is provided at the end of the universal cord 13.

The light source device 7 is detachably connected to the cover endoscope 4 via the connector 19 and supplies illumination light to the endoscope. The video processor 8 is detachably connected to the cover endoscope 4 via a signal cable 21 extending from the side of the connector 19, and drives the image pickup means built in the cover endoscope 4. , And the signal output from the image pickup means is converted into a standard video signal and output to the monitor 11.

The expansion device 10 is connected to an expansion tube 34, and is for sending air into the cover 3 through the expansion tube 34 to expand the expansion device. The endoscope 4 can be easily attached or removed. When the cover 3 is attached to or detached from the cover endoscope 4, a cover holder 6 is used, and for example, the base end side of the cover 3 is held by the cover holder 6 to insert or remove the cover endoscope 4. It is supposed to do.

The cover 3 includes an insertion portion cover portion 22 made of a thin and soft resin, an operation portion cover portion 23 and a universal cord cover portion 24 which are made of a thin and soft polymer material such as vinyl chloride. It is configured to cover the endoscope insertion portion 14, the operation portion 12, and the universal cord 13 of the cover endoscope 4.

The fluid control device 9 is provided with an air supply control valve 35, a water supply control valve 36, and a suction control valve 37, and air supply, water supply, and suction are controlled by these electromagnetic valves. The air supply control valve 35, the water supply control valve 36, and the suction control valve 37 are connected to an air supply pipe line 26, a water supply pipe line 27, and a suction pipe line 28 extending from the insertion section cover 22, respectively.

A suction tube 38 is connected to the suction control valve 37, and a suction device (not shown) is connected to the end of the suction control valve 37 so that unnecessary body fluid or the like is sucked from the distal end of the endoscope. There is. A water supply tube 39 is connected to the water supply control valve 36, and a water supply tank 33 is connected to the tip of the water supply tube 39. Further, two air supply tubes 40 extend from the fluid control device 9 and are connected to the air supply control valve 35 and the water supply tank 33.

FIG. 2 shows the overall configuration of the cover endoscope 4. The endoscope 4 for a cover is provided with an operation unit 12 that is grasped by an operator and performs various operations, and the insertion unit 14 and the universal cord 13 are connected so as to extend from the operation unit 12. The operation unit 12 is provided with a grip portion 43, and above the grip portion 43, an angle knob 44 for performing a bending operation, an air / water / suction control switch 45, a function for performing freeze / release for photographing, and the like. A switch 46 is provided.

In addition, the insertion portion 14 has, from the distal end side, a hard distal end portion 16 having an observation optical system and an illumination optical system (not shown), a bendable bending portion 17, and a flexible tube portion having flexibility. It is composed of 18 and. Due to the flexibility of the flexible tube portion 18, the insertion portion 41 of the endoscope device can be freely inserted into a body cavity or the like, and the bending portion 17 is bent so that the distal end portion can be moved in a desired observation direction. It can be turned.

On the other hand, the end portion of the universal cord 13 is branched into two, one side of which is provided with a connector 19 and the side of the connector 19 is provided with an electric connector section 20 to which the video processor 8 is connected. The signal cable 21 is connected. A second connector 51 is provided on the other branch of the universal cord 13, and a second electric connector portion 52 is provided at the end of the second connector 51. The second connector 51 is connected to the fluid control device 9 as shown in FIG. 1, and the operation instruction signal from the air / water supply / suction control switch 45 is supplied to the operation unit 12 via the universal cord 13 and the second connector 51. It is adapted to be transmitted to the fluid control device 9.

FIG. 3 is a cross-sectional view of the insertion portion 41 of the endoscope apparatus of the endoscope cover system in which the insertion endoscope cover 4 is covered with the insertion portion cover portion 22.

The insertion section 41 of the endoscope apparatus of the endoscope cover system is mainly configured to include the insertion section cover section 22 and the endoscope insertion section 14 for the cover.

The insertion portion cover portion 22 includes an air supply conduit 26 made of a PTFE tube (polytetrafluoroethylene tube), a water supply conduit 27, a suction conduit 28 also serving as a forceps channel, and an endoscope insertion part. An endoscope insertion channel 25 for inserting 14 is provided, and these tip ends are connected by a cover tip portion 29 made of a hard resin or the like. The air supply pipe 26 and the water supply pipe 27 join together at the tip side to form a single pipe.

As shown in FIG. 4, light is transmitted through the cover tip portion 29 to a position facing the observation optical system 15 (see FIG. 3) of the cover endoscope 4 and an illumination optical system (not shown). As described above, the observation window 61 and the illumination window 62, which are made of transparent glass or resin, are provided in an airtight manner, and further, the air / water supply nozzle 65 that opens toward the observation window 61 is provided. The opening of the air / water feeding nozzle 65 communicates with the air / water feeding conduit 26 and the water / water feeding conduit 27.

Further, as shown in FIG. 3, the cover tip portion 29 has an insertion portion cover outer cover made of a thin and soft resin for isolating the insertion portion 14 of the cover endoscope 4 from the external environment. 31 is hermetically connected.

On the proximal side of the insertion portion cover outer skin 31, there is a forceps insertion opening 67, an extension tube mouth 68 for connecting the extension tube 34 provided in the dilator 10, and the like, an endoscope operation portion fixing opening. The body portion 30 is provided, and the base end portion of the outer cover 31 of the insertion portion is airtightly connected. An opening portion 69 of the endoscope insertion channel 25 into which the endoscope insertion portion 14 is inserted is provided at the end portion on the proximal side of the endoscope operation portion fixing mouth portion 30, and one end is further provided. Pipe lines such as the suction pipe line 28 that open to the cover tip portion 29 project.

The endoscope insertion channel 25 includes an air supply conduit 26 in an internal space surrounded by the cover tip portion 29, the insertion portion cover outer skin 31, and the endoscope operation portion fixing mouth portion 30. , The water supply pipe line 27 and the suction pipe line 28 are removed, and the cover endoscope 4 is inserted. The endoscope insertion channel 25 is designed to open to the outside only in the endoscope operation unit fixing mouth 30 on the proximal end side, and the other portions are not exposed to the outside. Therefore, when the endoscope insertion portion 14 is inserted, the insertion portion 14 is covered by the channel forming member (the insertion portion cover outer skin 31 and the like) forming the endoscope insertion channel 25 except the base end side thereof, and It will not be exposed to. Further, the operation section 12 and the like on the proximal end side of the endoscope insertion section 14 are also covered with the operation section cover section 23 and the universal cord cover section 24.

Therefore, when used for an endoscopic examination, the insertion portion 14 and the like of the cover endoscope 4 are maintained in a non-contaminated state. On the other hand, since the cover 3 is contaminated, it becomes a disposable cover that is discarded after use.

On the other hand, the endoscope insertion portion 14 for a cover is provided with a distal end portion 16 having an observation optical system 15 and an illumination optical system (not shown), a bending portion 17, and a flexible tube portion 18 from the distal end side. A light guide (not shown) is inserted into the endoscope insertion portion 14. The rear end of this light guide is connected to the light source device 7, and the illumination light from the lamp in the light source device 7 is transmitted and emitted from the illumination optical system at the front end. An image pickup device 20 is provided in the cover endoscope insertion portion 14 at the image forming position of the observation optical system 15, and is connected to the video processor 8 via a signal cable. A subject such as a diseased part illuminated by the illumination light forms an optical image on the image sensor 20 through the observation optical system 15.

The image pickup signal of the optical image photoelectrically converted by the image pickup device 20 is input to the video processor 8 and is subjected to signal processing in the video processor 8 to be converted into a standard video signal. The subject image is displayed on the display screen.

In addition, in the insertion portion cover portion 22, in the vicinity of the endoscope operation portion fixing mouth portion 30 at the proximal end portion of the insertion portion cover outer skin 31, a cylindrical outer member made of an elastic member as shown in FIG. An insertion portion breakage preventing member 70 having a tapered side is provided. As shown in FIG. 5, the insertion portion breakage preventing member 70 has an internal thread portion 71 provided on the inner surface thereof, and the internal thread portion 71 is provided on the endoscope operation section fixing mouth portion 30. The male screw portion 72 shown in FIG. 6 is screwed and fixed.

The insertion portion breakage preventing member 70 may be attachable to and detachable from the endoscope operation portion fixing mouth portion 30 or the like, or may be provided in a state of being fixed to the insertion portion cover portion 22. . Further, the insertion portion breakage preventing member 70 may not be expanded outwardly of the insertion portion cover outer cover 31 but may be expanded inwardly so as to have a bending prevention effect, or may be expanded inwardly and outwardly.

In the endoscope apparatus 1 of the endoscope cover type of the present embodiment, the cover endoscope 4 is provided with the clean cover 3 and the cover endoscope 4 is isolated from the external environment. The cover type endoscope 2 is inserted into an inspection target site such as a body cavity. When the endoscope is used, the cover endoscope 4 is covered with the cover 3, so that the cover endoscope 4 is kept clean. Further, the air supply pipe line 26, the water supply pipe line 27, and the suction pipe line 28 also serving as a forceps channel are attached to the cover 3 side and are discarded together with the cover 3 after use, so that the contaminated pipe line is It will not be reused.

By configuring the cover-type endoscope 2 in this way, the endoscope 4 for the cover, which is the endoscope body, does not need to be washed or sterilized at each inspection, and is always clean. It can be maintained and endoscopy can be performed easily. The cover endoscope 4 can be continuously used without re-cleaning and re-disinfecting. For example, the cover endoscope 4 may be cleaned, sterilized, and disinfected when all the inspections of one day are completed. Therefore, the use efficiency of the endoscope can be improved.

Further, since the insertion portion breakage preventing member 70 is provided at the base end portion of the insertion portion cover portion 22, when inserting the insertion portion into the inspection object, the insertion portion cover portion is bent excessively. It is possible to prevent the insertion part from buckling even when it is repeatedly bent. In addition, it is possible to prevent the insertion portion from bending at the hand side, and it is possible to improve the insertability.

By the way, the insertion portion cover portion of the conventional endoscope cover-type endoscope apparatus has three pipe passages built therein, that is, an air supply pipe passage, a water supply pipe passage, and a suction pipe passage. . In addition, by covering the insertion part of the cover endoscope with the insertion part cover part, a means in consideration of detachability and safety is provided in the insertion part cover part or the insertion part of the cover endoscope. As a result, compared with the conventional uncovered endoscope without a cover, the insertion portion of the endoscope device of the endoscope cover system becomes thicker and the insertability into the body cavity becomes worse. Not only that, but it could cause the patient anxiety and pain.

FIG. 7 shows a configuration example of the fluid conduit in the endoscope cover. In FIG. 7, reference numerals 26 and 27 are an air supply conduit and a water supply conduit formed of a PTFE tube or the like connected to the fluid control device 9, and the air supply conduit 26 and the water supply conduit 27 are It is connected to a connecting pipe 75 provided in the endoscope operating unit fixing mouth unit 30 and is integrated into a single conduit. The connecting pipe 75 is made of a hard resin and has a wall thickness of about 1 mm. At the other end of the connection pipe 75, a single air / water supply conduit 76 formed of a PTFE tube or the like is connected, and the air / water supply conduit 76 is open at the tip of the insertion portion cover portion 22.

As described above, only the air / water supply pipe line 76 and the suction pipe line 28, which have two functions of air supply and water supply, are provided inside the insertion portion cover outer skin 31, and one pipe is provided for air supply / water supply. Therefore, the diameter of the insertion portion cover portion 22 can be reduced.

As a result, not only is the insertability improved, but since the connecting tube 75 is inside the endoscope operation section fixing mouth section 30 with a sufficient space, the space can be used effectively. Furthermore, when the cover endoscope 4 is inserted into the endoscope channel 25 of the insertion portion cover portion 22, it can be smoothly inserted without being caught by the connecting pipe 75 or the like.

Further, in this embodiment, one air supply pipe 26 and one water supply pipe 27 connected to the fluid control device 9 and the connection pipe 75 are provided, but the present invention is not limited to this. Two pieces may be provided by using a pipe-shaped member or the like, or two or more pieces may be provided.

In addition, in the conventional endoscope apparatus of the endoscope cover system, metal is used for the configuration of the insertion portion of the cover endoscope, which causes electromagnetic noise from the cover endoscope. , There is a fear of adversely affecting other electric circuits, such as the electric circuit of the video processor. However, by configuring the insertion section of the endoscope device as shown in FIGS. The noise radiated to the outside can be reduced.

FIG. 8 is a sectional view of the vicinity of the insertion portion breakage preventing member 70 of the endoscope device of the endoscope cover system.

In FIG. 8, reference numeral 31 denotes an insertion portion cover outer cover 31, which is one of the constituent elements of the insertion portion cover portion 22 described above, and is made of, for example, a thermoplastic elastomer. Metal powder 77 is mixed in the thermoplastic elastomer of the insertion portion cover outer skin 31 to make it conductive. A connecting pin 78 is connected to the outer cover 31 of the insertion section, and is connected to the fluid control device 9 via a lead wire 79 connected to the connecting pin 78.

As shown in FIG. 9, the lead wire 79 extends to the outside from the end of the endoscope operation section fixing mouth section 30 of the insertion section cover section 22, and the air supply conduit 26 and the water supply conduit 27 are provided. , Extends to the fluid control device 9 together with the suction conduit 28, and is connected to a connection terminal 80 provided on the fluid control device 9. The connection terminal 80 is connected to the ground of the patient circuit 81 inside the fluid control device 9 and also connected to the housing of the fluid control device 9 via the capacitor 82 having a relatively small capacity. The housing of the fluid control device 9 is grounded. That is, the insertion portion cover outer skin 31 is connected to the ground of the patient circuit 81 in the fluid control device 9 and is also grounded via the capacitor 82.

In the light source device 7, the video processor 8, and the fluid control device 9, the internal patient circuit and the secondary circuit are insulated from the primary circuit, and the cover endoscope 4 connected to the patient circuit also has a primary circuit. Floating against the ground. Therefore, only the patient circuit of each of the cover endoscope 4 and the light source device 7, and the cover endoscope 4 and the video processor 8 are connected, and are grounded via the light source device 7 and the video processor 8. Not in.

With this structure, the outer cover 31 of the insertion portion becomes conductive, and since it is grounded to the ground, an electromagnetic shielding effect is produced, and an electromagnetic wave emitted from the cover endoscope 4 to the outside is generated. Not only can noise be reduced, but electromagnetic noise that enters from the outside can also be reduced.

Since the insertion portion cover outer skin 31 is grounded via the capacitor, it has a grounding effect on noise of high frequency, and leakage current flows to the patient even when the ground wire is disconnected. There is no.

Further, in this embodiment, the metal powder 77 is used to make the insertion portion cover outer cover 31 conductive, but the present invention is not limited to this, and metal wire braided or metal bellows may be used. The insertion portion cover outer cover 31 may be made conductive.

By the way, the universal cord cover portion of the endoscope cover used in the conventional endoscope device of the endoscope cover system is a universal cord for the purpose of preventing the universal cord and the connector of the endoscope for the cover from being contaminated. And covers the connector. However, since no consideration was given to the structure of the contact portion with the light source device provided in the connector, such a universal cord cover may cause a contact failure by connecting the cover with the contact portion, or There was a problem that it was necessary to take measures such as cutting off the part corresponding to the contact part.

FIG. 10 to FIG. 14 show an example of the configuration of an endoscope cover that can surely connect the light source device and the cover endoscope and can surely protect the cover endoscope.

FIG. 10 shows a structure in the vicinity of the connector 19 at the end of the universal cord 13 of the cover endoscope 4.

The connector 19 provided at one end of the universal cord 13 is an electrical connector to which the light source connector portion 85 connected to the light source device 7 and the signal cable 21 connected to the video processor 8 are connected. And a section 20 are provided. The light source connector section 85 has a light guide 86 for transmitting illumination light protruding from the rear end thereof, and a light source contact pin 88 for transmitting a signal for photographing and the like to the light source device 7 on the side surface portion. A light guide cover 87 that covers the light guide 86 is provided. Further, inside the electric connector section 20, a video contact pin 89 for transmitting a signal such as a video signal to the video processor 8 is provided.

The second connector 51 provided at the other branched end of the universal cord 13 is provided with the second electrical connector portion 52 connected to the fluid control device 9, and the second electrical connector portion 52 is provided. A fluid control contact pin 90 for transmitting an air / water / water suction control signal or the like to the flow control device 9 is provided on the side surface of the electric connector portion 52.

FIG. 11 shows the overall structure of the universal cord cover portion 24. A string 91 made of synthetic fiber or the like is wound around the end of the universal cord cover part 24 on the cover endoscope operating part 12 side. When the universal code cover part 24 is attached, the string 91 is squeezed to cover it. It is fixed to the endoscope 4 for use. The other end of the universal cord cover part 24 on the cover endoscope connector 19 side is provided with a hole 92 at a position corresponding to the light source connector part 85 and the electric connector part 20 of the cover endoscope. . A pressing member 93 made of an elastic material is provided at the edge of the hole 92, and the peripheral portion of the hole 92 is brought into close contact with the light source connector portion 85 or the electric connector portion 20.

12 and 13 show a state in which the universal cord cover portion 24 is covered with the cover endoscope 4.

FIG. 12 shows the vicinity of the operation unit 12 of the cover endoscope. When the universal cord 13 of the cover endoscope 4 is covered, the universal cord cover 24 is passed through the universal cord 13 from the side of the cord 91 and is covered up to the proximal end of the operation unit 12 side, as shown in FIG. The string 91 is tightly fixed near the operation unit 12. Then, the operation section 12 of the cover endoscope is covered with the operation section cover section 23.

FIG. 13 shows the vicinity of the connector 19 of the cover endoscope. The main body of the connector 19 is covered by the universal cord cover portion 24, but the light source connector portion 85 and the electric connector portion 20 to which the light source device 7 and the signal cable 21 are connected and are less likely to be contaminated are exposed to the outside through the hole 92, and the light source contact point is provided. A reliable connection is made at the pin 88 and the video contact pin 89.

As described above, on the connector 19 side of the cover endoscope 4 of the universal cord cover portion 24, a hole 92 is provided and exposed at a portion which is covered with the light source device 7 and the signal cable 21 and is unlikely to be contaminated. As a result, the light source contact pin 88 connected to the light source device 7 and the video contact pin 89 connected to the signal cable 21 are exposed without being covered by the universal cord cover portion 24, so that a contact failure or the like occurs at the connection portion. The signal can be reliably transmitted without occurrence of.

Further, due to the pressing member 93 provided at the peripheral portion of the hole 92, the universal cord cover portion 24 is in close contact with the base end portions of the exposed portions of the light source connector portion 85 and the electric connector portion 20, and the inside portion from this. Since it is covered so as not to be exposed, the universal cord cover portion 24 is surely covered except the exposed portion so that it is not contaminated.

As shown in FIG. 14, as a modification 24 ′ of the universal cord cover portion, a hole 92 at the end of the universal cord cover portion 24 ′ is provided only at a position corresponding to the electric connector portion 20. The light source connector portion 85 may be covered, and only the tip portion of the light guide cover 87 of the light source connector portion 85 and a portion corresponding to the light source contact pin 88 may be opened and exposed.

15 and 16 relate to a second embodiment of the present invention. FIG. 15 is a cross-sectional view showing a configuration of an insertion portion of an endoscope cover type endoscope apparatus, and FIG. 16 is a cover endoscope. FIG. 6 is an explanatory view showing a configuration of a base end portion of the insertion portion cover portion in a state where the is inserted.

The second embodiment is a modification of the structure of the insertion portion breakage preventing member 70 provided in the first embodiment.

As shown in FIG. 15, the insertion portion cover portion 95 is provided with the cover distal end portion 29 and the endoscope operation portion fixing mouth portion 30 at both end portions similarly to the first embodiment, and this cover portion is provided. The distal end portion 29 and the mouthpiece portion 30 for fixing the endoscope operation portion are the insertion portion cover skin 9 made of a thin and soft resin for isolating the insertion portion 14 of the cover endoscope 4 from the external environment. 6 are connected in an airtight manner.

As shown in FIGS. 15 and 16, the end portion of the insertion portion cover outer cover 96 in the vicinity of the endoscope operation portion fixing mouth portion 30 changes in a tapered shape so that the wall thickness increases. And constitutes the insertion portion bending prevention portion 97. Others are the same as those in the first embodiment, and the description will be omitted.

As described above, by changing the thickness of the base end portion of the insertion portion cover outer cover 96 so as to be tapered, and providing the insertion portion bending prevention portion 97, the insertion portion is inserted in the same manner as in the first embodiment. When the insertion part is inserted into the inspection object, it is possible to prevent the insertion part from bending at the hand side and the insertion part to buckle, and the insertability can be improved.

Further, as shown in FIG. 17, the color of the insertion portion cover portion can be made black by configuring the insertion portion cover outer cover.

The insert cover outer cover 96 of the insert cover 95 is made of a thermoplastic elastomer, and a large amount of carbon 98 is mixed in the thermoplastic elastomer of the insert cover outer cover 96. .

With this configuration, the outer cover 96 of the insertion portion becomes black, and therefore the diameter of the insertion portion cover 95 is visually perceived to be small.

When the color of the insert cover is bright such as white, the diameter of the insert cover is visually perceived to be thicker than it actually is, which gives the patient an extreme sense of anxiety. However, by making the cover of the insertion section black, it can be visually perceived as having a small diameter, giving the patient a sense of security and allowing the operator to insert it smoothly. be able to.

[0075]

[Effect of device]

 As described above, according to the present invention, it is possible to prevent buckling on the proximal side of the insertion part and improve the insertability when the insertion part is inserted into the inspection object. There is.

[Brief description of drawings]

1 to 6 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 system.

FIG. 2 is an explanatory view showing the overall configuration of a cover endoscope to be inserted inside the endoscope cover.

FIG. 3 is a cross-sectional view showing a configuration of an insertion portion of an endoscope cover type endoscope apparatus.

FIG. 4 is a perspective view showing a configuration of a cover tip portion of an insertion portion cover portion.

FIG. 5 is a perspective view showing a configuration of an insertion portion breakage preventing member.

FIG. 6 is an explanatory diagram showing a configuration of a base end portion of an insertion portion cover portion in a state where a cover endoscope is inserted.

FIG. 7 is an explanatory diagram showing a configuration example of an endoscope cover in which an air supply pipe and a water supply pipe are combined into one at an insertion portion cover portion.

FIG. 8 is a cross-sectional view in the vicinity of an insertion portion breakage preventing member in an insertion portion cover portion of an endoscope cover type endoscope apparatus.

FIG. 9 is an explanatory diagram showing a connection state between the endoscope for cover and the cover portion of the insertion portion and the light source device, the video processor, and the fluid control device.

FIG. 10 is an explanatory diagram showing a configuration in the vicinity of a connector provided at an end of a universal cord of a cover endoscope.

FIG. 11 is an explanatory diagram showing an overall configuration of a universal cord cover part.

FIG. 12 is an explanatory view showing the vicinity of an operation portion of the cover endoscope in a state where the universal cord cover portion is covered with the cover endoscope.

FIG. 13 is an explanatory diagram showing the vicinity of the connector of the cover endoscope in a state where the universal cord cover part is covered with the cover endoscope.

FIG. 14 is an explanatory diagram showing the vicinity of the connector of the cover endoscope in a state in which a modification of the universal cord cover part is covered.

15 and 16 relate to a second embodiment of the present invention, and FIG. 15 is a cross-sectional view showing a configuration of an insertion portion of an endoscope cover type endoscope apparatus.

FIG. 16 is an explanatory diagram showing a configuration of a base end portion of the insertion portion cover portion in a state where the cover endoscope is inserted.

FIG. 17 is a cross-sectional view showing a configuration example of an insertion portion cover outer cover in an insertion portion cover portion of an endoscope cover type endoscope apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Endoscope cover type endoscope apparatus 2 ... Endoscope cover type endoscope 3 ... Endoscope cover 4 ... Cover endoscope 5 ... Cart 7 ... Light source device 8 ... Video processor 9 ... Fluid Control device 10 ... Endoscope cover extender 11 ... Monitor 12 ... Operation part 13 ... Universal cord 14 ... Endoscope insertion part 22 ... Insertion part cover part 23 ... Operation part cover part 24 ... Universal code cover part 25 ... Endoscope Mirror insertion channel 26 ... Air supply conduit 27 ... Water supply conduit 28 ... Suction conduit 29 ... Cover tip portion 30 ... End portion for fixing endoscope operation portion 31 ... Insert cover outer cover 41 ... End of endoscope cover system Insertion part 70 of endoscope device ... Insertion part breakage prevention member

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshio Tashiro 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Co., Ltd. (72) Inventor Akira Suzuki 2-43 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Co., Ltd. (72) Minoru Yamazaki 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Co., Ltd. (72) Osamu Mizuta 2-43-2 Hatagaya, Shibuya-ku, Tokyo No. Olympus Optical Industry Co., Ltd. (72) Inventor Toshiyuki Kubotani 2-43-2 Hatagaya, Shibuya-ku, Tokyo Within Olympus Optical Industry Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. An endoscope apparatus of an endoscope cover type having an endoscope and an endoscope cover that covers at least the insertion portion of the endoscope, wherein the inside of the insertion portion of the endoscope cover is An endoscope cover-type endoscope apparatus comprising a buckling prevention mechanism for the endoscope cover or the insertion portion of the endoscope provided near the end on the endoscope operation section side.