JPH10201710A - Endoscope - Google Patents

Abstract

(57) [Problem] To provide an endoscope which can be immersed in a disinfecting solution only in a state where a battery storage chamber is completely watertight. A click ring (81) is projected from a light guide base (8) provided on an endoscope body (2), and the click guide (82) provided on a connection socket (9) of a battery type light source (3) is pushed to a position where the click ring (82) can be pushed over. The battery type light source 3 can be connected and fixed to the mirror body 2. Further, a battery storage lid 38 can be attached to and detached from the attachment opening adjacent to the connection socket 9 in the main body 34 of the battery type light source 3, and the projection amount of the lid fixing dial 87 and the like becomes small only when the lid is attached in a watertight manner. It can be engaged in a notch formed dial engaging portion 89 on the endoscope main body 2 side, and in a watertight and insufficient mounting state, the lid fixing dial 87 is moved before the click convex portion 82 gets over the click ring 81. In this structure, the battery-type light source 3 cannot be connected to and fixed to the endoscope main body 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an endoscope suitable for portable use and illuminated by a battery-type light source.

[0002]

2. Description of the Related Art Endoscopes, which have been widely used in the medical and industrial fields, require a means for illuminating since a site to be diagnosed or inspected is inside a living body, plant, or the like. The illumination light from the lamp in the light source device outside the endoscope is guided by the light guide fiber provided in the endoscope, and the guided illumination light is emitted from the illumination window on the distal end side of the insertion portion, It is configured to illuminate a site to be diagnosed or inspected.

[0003] The light source device generally uses a power source supplied from a commercial power source to cause a lamp inside the light source device to emit light. On the other hand, for example, Japanese Patent Application No. 8-39739 proposes an endoscope in which a battery-type light source using a battery such as a dry battery as a power supply is detachably attached to an operation unit of the endoscope main body.

After the endoscope is used for endoscopy, it is disinfected by immersing it in a disinfecting solution or the like. The structure to keep. An endoscope employing such a battery-type light source is excellent in portability.

[0005]

However, in this endoscope, if the battery storage chamber is used in a state where it is not set to be completely watertight, it may be immersed in a disinfecting solution. There is a possibility that the battery in the battery storage chamber may be in a short circuit state, or the electrodes in the battery storage chamber may be corroded, and the lighting may be incomplete due to poor contact or the like.

The present invention has been made in view of the above points, and has as its object to provide an endoscope that can be immersed in a disinfecting solution only in a state where a battery storage chamber is completely watertight.

[0007]

SUMMARY OF THE INVENTION An endoscope body having a light guide fiber for guiding illumination light, and an illumination light that is detachably attached to the endoscope body and supplies illumination light to a light incident end of the light guide fiber. The battery-type light source is connected to and fixed to the endoscope main body only when the battery housing lid of the battery-type light source is attached to the battery-type light source main body in a watertight manner. If a disinfectant is subsequently immersed in an antiseptic solution after an endoscope inspection, a connection mechanism is provided, so that it is not necessary to check whether or not it is in a watertight state. Even so, since the battery storage lid is in a watertight mounting state, it is possible to reliably prevent the occurrence of electric leakage and poor contact.

[0008]

Embodiments of the present invention will be specifically described below with reference to the drawings. (First Embodiment) FIGS. 1 to 14 show a first embodiment of the present invention.
FIG. 1 shows the entire configuration of an endoscope according to a first embodiment, FIG. 2 shows the shape and the like of a distal end portion of an endoscope main body, and FIG. 3 shows the structure of an objective lens system. FIG. 4 shows FIG.
5A and 5B show the structure of a light guide base and a battery-type light source in a mounted state where a battery-type light source is mounted, and FIGS.
(C) shows a cross section taken along line AA, BB, and CC of FIG. 5, respectively. FIG. 7 shows a state in which a battery-type light source is mounted on a light guide base of the endoscope main body. (A),
(B) shows a cross section taken along line EE and line FF in FIG. 7, FIG. 9 shows a state in which a battery type light source is mounted on a light guide base of the endoscope body, and FIGS. 10 and 11 show lamps. FIG. 12 shows a developed view of the lamp holder, FIG. 13 shows a state in which the insertion portion is inserted into a narrow lumen for observation, and FIG. 14 shows an operation of the protection tube in the bending portion. FIG.

As shown in FIG. 1, an endoscope 1 according to a first embodiment of the present invention has an endoscope body 2 having a watertight structure and a watertight structure detachably connected to the endoscope body 2. It comprises a battery-type light source 3 and a light guide cable 4 which is selectively connected to the battery-type light source 3 and detachably connected to the endoscope main body 2.

The endoscope main body 2 includes an elongated insertion portion 5,
An operating section 6 formed at the rear end of the insertion section 5, an eyepiece section 7 formed at the rear end of the operating section 6, and a light guide base 8 protruding from a side of the operating section 6. The connection socket 9 of the battery type light source 3 can be detachably connected to the end of the light guide base 8.

The insertion portion 5 has a front end portion 10 formed at the front end thereof, a bending portion 11 formed at the rear end of the front end portion 10 and capable of bending, and a front end of the operation portion 6 from the rear end of the bending portion 11. And a flexible portion 12 having flexibility.

The operating unit 6 includes a grip 13 held by an operator.
The bending operation lever 14 is provided on the rear end side, and the bending portion 11 can be bent by rotating the bending operation lever 14. The operation unit 6 is provided with a suction button 15 for performing suction and a suction base 16 protruding from the vicinity of the base end of the suction button 15. The suction base 16 is connected to a suction device via a tube (not shown). By operating the suction button 15, the body fluid or the like can be sucked through the suction base 16 communicating with the suction channel.

Further, a forceps insertion port 17 for inserting a treatment tool such as forceps is formed at the front end side of the operation unit 6, and the forceps insertion port 17 has a suction channel 18 therein (the tip opening is shown in FIG. 2). Communication). This forceps insertion port 1
7 is usually provided with a forceps stopper 19.

The illumination light is guided (transmitted) into the insertion section 5.
The rear end of the light guide fiber 21 is passed through the operation unit 6 and the rear end of the light guide fiber 21 is fixed in the light guide base 8, and as shown in FIG. When the lamp 22 mounted inside the battery type light source 3 is caused to emit light by connecting the light source 3 to the mounted state,
Is supplied to the light incident end face of the light guide fiber 21 of the light guide base 8.

The supplied illumination light is guided by a light guide fiber 21 and is emitted forward from a tip end surface fixed to an illumination window of the end portion 10, ie, a light exit end surface 23 as shown in FIG. To illuminate the subject.

The illuminated object forms an optical image at an image forming position by an objective lens system 24 attached to an observation window adjacent to the illumination window. As shown in FIG. 3, the distal end surface of the image guide fiber 25 is arranged at this image forming position, and transmits the formed optical image to the end surface on the eyepiece unit 9 side. The transmitted optical image can be magnified and observed through an eyepiece attached to an eyepiece window of the eyepiece 7.

In this embodiment, as shown in FIG. 2, the distal end portion 10 is formed with a small-diameter portion 10a such that the distal end is smaller than the outer diameter of the proximal end, and the center Oa of the small-diameter portion 10a is the distal end. It is formed eccentrically so as to be deviated from the center Ob on the proximal end side of the portion 10 to one side (for example, in the upward direction when the bending portion 11 is curved upward), and furthermore, the optical axis of the objective lens system 24 is located on the proximal end side. An objective lens system 24 is disposed on the distal end surface of the small-diameter portion 10a so as to be eccentric to one side (upward) from the center Ob. For example, three light emitting end surfaces 23 are provided around the objective lens system 24. I have.

With such a structure, FIG.
When the distal end side of the insertion portion 5 is inserted into a thin body cavity as shown in FIG. 7, the concentric small-diameter portion 10a that is not eccentric in the conventional example is formed and the objective lens system 24 is positioned at the center Ob on the base end side. The near point side is a ring-shaped part of the same distance because it is arranged close, and the near point side could not be observed from that part, but in the present embodiment) on the eccentric side, the closer near point part Pa is Observable. In this case, the far point Pb side can be observed on the side opposite to the eccentric side.

Therefore, the insertion can be easily performed by the small diameter portion 10a, and the inner wall portion to be observed closer and in detail can be observed in detail by rotating the insertion portion 5 to the near point Pa side. it can.

In this embodiment, as shown in FIG. 3, the objective lens system 24 includes front lens portions 27a and 27b attached via a lens frame 26 and a rear lens portion 27c directly fixed to the inner wall of the objective window. Consists of

The front lens portion 27a has a cylindrical lens frame 2.
6, the front lens portion 27b is fixed to the lens frame 26 over the entire outer peripheral surface of the lens or by partial bonding (for example, three-point bonding).

Further, a male screw portion 28 is provided on the outer peripheral surface of the lens frame 26, and is screwed into a female screw portion provided on the inner peripheral surface of the distal end portion 10 on the distal end side of the observation window. Fixed watertight. Further, a fitting hole 29 for attaching a detachable tool when fixing or removing the lens frame 26 is provided on the distal end surface of the lens frame 26.

With this structure, moisture enters the objective lens system 24, particularly from the boundary of the adhesive layer between the front lens portion 27a and the lens frame 26, and accumulates in the gap between the front lens portions 27a and 27b. In the case where the image becomes unclear, the influence of moisture or the like can be eliminated by removing the lens frame 26 and attaching the lens frame 26 to which the new unfogged front lens portions 27a and 27b are attached.

Also, moisture enters from the screwing portion between the front end portion 10 and the lens frame 26, and the front lens portion 27b and the rear lens portion 27
c, the lens frame 26 also remains as described above.
Can be removed from the tip portion 10 to remove the fogging of the gap. Therefore, the effects of moisture and the like can be easily eliminated, and the cost for repair can be significantly reduced.

As shown in FIG. 4, a hole communicating with the outside is provided in a gap between the two front lens portions 27a and 27b from the side of the lens frame 26, and a filler such as a removable adhesive is provided. A structure filled with 30 may be used.

With such a structure, it can be reused. In the case of cloudiness, the lens frame 26 is removed, and the filler 30 is further removed to remove cloudiness inside (by drying in a drying container or the like). By putting the agent 30 and attaching it to the tip portion 10 again, it is possible to set a state without fogging. In the case of this structure, the cost can be further reduced as compared with the structure of FIG.

As shown in FIG. 1, the endoscope main body 2 is provided with a vent 31 at a position opposite to the forceps insertion opening 17, for example. Air can be sent, and the endoscope main body 2 can be inspected for water leakage.

As shown in FIG. 1, the light guide base 8
Is provided with a cable connector screw 32 so that a cable connector 4a at the front end of the light guide cable 4 into which the light guide fiber is inserted can be connected.

The light guide connector 4b at the rear end of the light guide cable 4 can be connected to an existing light source device (not shown), whereby illumination light from a lamp inside the light source device is transmitted to the light guide connector 4b.
b. The illumination light guided through the light guide fiber in the light guide cable 4 can be guided to the light guide fiber 21 on the endoscope main body 2 side.

The battery-type light source 3 provided with a connection socket 9 connectable to the light guide base 8 has a battery-type light source main body (hereinafter simply referred to as a main body) 34 having a substantially triangular prism shape, and penetrates to a position on the upper side thereof. A connection socket 9 is fixed to one open end by providing a hole, and the lamp 2 is inserted from the other open end.
2 can be mounted.

As shown in FIG. 6 and the like, for example, two batteries 3 are provided on the bottom side of the main body 34 of the battery type light source 3.
6 is provided. As shown in FIG. 5 or FIG. 7, the battery housing portion 37 has a detachable opening on the connection socket 9 side for allowing the battery 36 to be detachably attached thereto, and this detachable opening is closed by a battery accommodating cover 38 which can be attached in a watertight manner. It has become.

FIG. 5 shows a light guide base 8 of the endoscope body 2.
2 shows a detailed structure near the battery-type light source 3 in which the battery-type light source 3 is mounted and turned on. The main body 34 of the battery-type light source 3 is formed of an insulating member that can withstand the heat generated by the lamp 22, and the main body 34 has a lamp holder housing 39 for housing the lamp holder 35 through a through hole.
A lamp holder 35 to which the lamp 22 is attached is mounted from the rear end side of the lamp holder storage portion 39, and a substantially cylindrical connection socket 9 is watertightly attached to a front side facing the lamp 22.

A switch case 41 is attached to the rear end of the main body 34 in a watertight manner through an O-ring 42.
The lamp holder 35 is inserted into the lamp holder insertion hole 43 provided on the upper end side of the switch case 41 so as to be pressed against the front side against the urging force of the coil spring 48, as described later, so that the lamp holder is inserted into the lamp holder storage portion 39. 35 can be attached.

The lamp holder 35 has a substantially cylindrical shape.
A screw hole is provided in a concave portion on the front side thereof, and a lamp mounting member 45 to which the lamp 22 is detachably mounted by screwing is mounted. A ring-shaped groove for accommodating a part of the coil spring 48 is provided on a front end surface of the lamp mounting member 45.

A reflector 46 is housed in the lamp holder housing 39. The reflector 46 is screwed into a cylindrical spring holding member 47 by screwing, and the rear end of the spring holding member 47 is connected to the main body 34. It is fixed by screwing. A coil spring 4 is provided on the inner peripheral side of the spring holding member 47.
The front end of the coil spring 48 having a larger outer diameter than the body of the coil spring 48 is fixed so as to be sandwiched between the reflector 46 and the spring pressing member 47. The coil spring 48 constantly urges the lamp mounting member 45 rearward.

A contact pin 49 is provided so as to protrude from the switch case 41 toward the lamp holder insertion hole 43, so that the contact pin 49 can be engaged with the peripheral groove 51 provided in the lamp holder 35. Then, the lamp holder 35 is inserted into the front side against the urging force of the coil spring 48, and the contact pin 49 is inserted.
Of the lamp holder 3 by engaging the
5 can be set to the mounted state.

Further, a peripheral groove is provided on the outer peripheral surface of the lamp holder 35, and the O-ring 52 is accommodated therein. In the mounted state, the O-ring 52 is in pressure contact with the lamp holder insertion hole 43, and has a structure capable of maintaining watertightness.

A lamp contact plate 53 that contacts the rear electrode of the lamp 22 is fixed to the lamp holder 35 with fixing pins 54. In the lighting state shown in FIG. 5, the fixing pin 54 is a contact pin 4 attached to the switch case 41 side.
9 and electrically conducts.

The contact pin 49 is fixed to one end of a leaf spring 55 as shown in FIG. 6C, and the other end of the leaf spring 55 is fixed to the switch case 41 by a screw 56. The contact pin 49 attached to one end of the leaf spring 55 is urged by the elastic force of the leaf spring 55 so as to project toward the lamp holder insertion hole 43. The other end of the leaf spring 55 is connected via a wiring 57 to a wiring board 59 fixed to a conical spring receiving member 58 of FIG.

The wiring board 59 is electrically connected to the rear end of the conical spring 61 protruding toward the battery housing 37, and the front end of the conical spring 61 contacts one electrode of the battery 36 and is electrically connected. I do.

The other electrode of the battery 36 is electrically connected to a contact screw 62 fixed to the battery cover 38 as shown in FIG. The contact screw 62 conducts with the adjacent contact screw, and the contact screw conducts with one electrode of the battery 36 housed adjacent thereto, and the other electrode of the battery 36 becomes conical as shown in FIG. It is electrically connected to one end of the wiring board 63 whose one end is connected to the nut via the spring 61.

As shown in FIG. 5, the other end of the wiring board 63 is bent in an L-shape and extends forward so as to contact the reflector 46 at the lower end of the lamp holder housing 39. The reflector 46 is electrically connected to an electrode on the side of the lamp 22 via a coil spring 48 and a lamp mounting member 45.

As will be described later, this lamp holder 3
By rotating 5, the lamp holder can be set to a lamp holder mounting position (see FIG. 10) in which the lamp is turned off and a lamp holder removing position (see FIG. 11).

On the other hand, a rear end opening of the connection socket 9 is located at a front portion of the lamp 22, and a condensing lens 65 for condensing light of the lamp 22 is provided at the rear end opening through an O-ring 66 for watertightness. The connection socket 9 is screwed and fixed with a lens holding member 67, and the base end of the connection socket 9 is screwed with a screw portion 68 provided on the outer peripheral surface thereof into a screw hole on the inner peripheral surface of the distal end of the lamp holder housing portion 39. In addition, a watertight O-ring 69 is interposed at the front portion to form a watertight structure.

As shown in FIG. 5, a light guide base 8 of the endoscope main body 2 is mounted in a substantially cylindrical concave portion formed by the connection socket 9. At the tip of the light guide base 8, a protective cover glass 71 is provided for watertight O.
It is fixed with a fixing ring 73 with the ring 72 interposed. A watertight O-ring 74 is interposed also on the base end side of the fixing ring 73 to ensure watertightness.

A base end portion of the light guide fiber 21, that is, a light incident end portion, is fixed to a base portion of the light guide fiber 21 with screws inside the inside protected by the cover glass 71. The rear end of the light guide base 8 is attached to the operation section 6 by an operation section side cover 76.
Are fixed by screwing to a light guide base receiving member 77 that fixes the watertightness, and the O-ring 78 ensures watertightness. In addition, the operation unit side cover 76 is also inserted with an O-ring 79 to ensure watertightness.

A peripheral groove is formed on the outer peripheral surface of the light guide base receiving member 77, and a click ring 81 is annularly mounted. On the other hand, a click is formed on the inner peripheral surface of the connection socket 9 at a position where the click ring 81 is engaged. A projection 82 is formed. Then, the click ring 81 is moved to the click convex portion 82.
When the light guide base 8 is attached to the connection socket 9 after passing over the taper inner peripheral surface 9a of the connection socket 9,
The outer peripheral surface of the taper of the light guide base 8 is set so as to abut.

Further, a peripheral groove is formed on the outer peripheral surface of the light guide base receiving member 77, and an O-ring 83 is annularly mounted to ensure watertightness.

The screw rod 8 is located at a position near the lower end of the battery storage cover 38 for closing the mounting opening of the battery storage section 37 below the connection socket 9 in the main body 34.
5 is fixed so as to protrude, and the screw portion at the tip thereof is attached to the female screw portion of the rod receiving member 86 provided on the main body 34 by screwing. The proximal end of the screw-in rod 85 protrudes to the outer surface side of the battery storage lid 38, and a disk-shaped lid fixing dial 87 is fixed with screws.
In addition, a circumferential groove is also provided in the threaded rod 85 to
The ring 88 is housed to ensure watertightness.

Then, by rotating the cover fixing dial 87 and screwing the screw-in rod 85 into the rod receiving member 86, the battery storage cover 38 is fitted into the attachment / detachment opening so that it can be attached in a watertight manner. Note that a watertight O.D.
The ring 84 is housed to ensure watertightness.

As shown in FIG. 8B, the outer surface of the battery housing cover 38 facing the portion where the cover fixing dial 87 is attached is partially cut out in a substantially semicircular shape.

Further, a portion of the endoscope main body 2 facing the lid fixing dial 87 is also notched to form a concave portion.
Specifically, as shown in FIG.
6 is provided with a notch (recess) having a substantially semicircular shape into which a protruding lid fixing dial 87 is fitted.
Is formed.

When the battery type light source 3 is mounted on the endoscope main body 2 in a state where the battery housing cover 38 is attached in a watertight manner, the cover is fixed in the dial engaging portion 89 as shown in FIG. The dial 87 is fitted and engaged.

The notch of the dial engaging portion 89 also has a positioning function when the battery type light source 3 is mounted on the endoscope main body 2. That is, when attaching the connection socket 9 to the light guide base 8 and attaching (connecting / fixing) the battery type light source 3 to the endoscope main body 2, the dial engaging portion 8 is used.
By attaching the lid fixing dial 87 to the position 9 and attaching the same, attachment becomes possible.

Also, as shown in FIG.
8 is attached to the battery type light source 3 in a watertight manner,
In other words, when the click ring 81 is connected and fixed so that the click convex portion 82 gets over the click ring 81 in a state where the cover fixing dial 87 is sufficiently rotated and securely attached, the cover fixing dial 87 is formed on the cutout surface of the dial engaging portion 89. The notch of the dial engaging portion 89 and the convex portion of the lid fixing dial 87 are set so that they are almost in contact with each other, and are engaged with each other.

When the battery storage lid 38 is not attached to the battery-type light source 3 in a watertight manner, the lid fixing dial 87 is rotated before the click ring 81 gets over the click convex portion 82 to be mounted. Entry 8
It is characterized in that it comes into contact with the cutout surface of No. 9 and cannot be set in the mounted state.

FIG. 10 shows the lamp holder mounted state when the lamp holder 35 is mounted on the battery type light source 3. A C-shaped peripheral groove 51 is provided on the outer peripheral surface of the lamp holder 35, and a front end side adjacent to the peripheral groove 51 corresponding to the mounting position as shown in FIG.
A mounting slope portion 90 is provided.

Insert the lamp holder 35 into the lamp holder insertion hole 4
When the battery-type light source 3 is attached to the battery-type light source 3 from the outside, the position is adjusted to the index (see FIGS. 7 and 9), and then the battery-type light source 3 is pressed while receiving the biasing force of the coil spring 48. Lamp holder storage part 3
9, where the slope portion 90 climbs over the contact pin 49 and then the contact pin 49 is
And locked (mounted) as shown in FIG.

In this state, the fixed pin 54 is
9, the lamp contact plate 53 and the contact pins 49 do not conduct, and the lamp 22 does not light. That is,
This corresponds to the switch OFF state.

FIG. 5 is a diagram showing a lighting state of the lamp 22. In the state of FIG. 10, the lamp holder 35 is rotated by 90 ° and set to a position of an index indicating a lighting position (not shown), whereby the contact pin 49 and the fixing pin provided on the orbital groove 51 as shown in FIG. As a result, the lamp 22 is in electrical contact with the battery 36 serving as a power supply, and the lamp 22 is turned on. That is, it corresponds to the switch ON state.

FIG. 11 is a view showing a position where the lamp holder 35 is removed. In the state of FIG. 5, when the lamp holder 35 is rotated by 180 ° in the opposite direction, the contact pin is formed at the portion where the slope portion 91 formed by tapering the front wall of the orbiting groove 51 is provided as shown in FIG. In this state, the engagement of the contact pin 49 is released by the slope portion 91, and the contact pin 49 is pushed rearward by the biasing force of the coil spring 48, and the slope portion 91 is pressed.
Is moved out of the battery type light source 3 over the contact pin 49. That is, this state corresponds to the removal position.

FIG. 12 is a development view of the orbital groove 51 forming the switch mechanism formed on the outer peripheral surface of the lamp holder 35. The shapes of the mounting position, the lighting position, and the removing position of the lamp holder 35 are shown. When the lamp holder 35 is pushed into the battery-type light source 3 in the mounting position, the lamp holder 35 is fixed (mounted). It turns on when rotated 90 ° from that state,
Rotate 80 ° to remove position.

When moving from the installation position to the removal position, the stopper 92 is not rotated easily to the removal position.
In the case of removal, the lamp holder 35 must be rotated while being pressed against the force of the coil spring 48. Therefore, during normal use, even if the lamp 22 is turned on and off, the lamp holder 35 is not accidentally detached from the battery-type light source 3.

The endoscope main body 2 according to the present embodiment
Is formed of a shape memory rubber 93, and the shape memory rubber 93 is subjected to shape memory processing so as to maintain a cylindrical shape.

Accordingly, for example, when the needle 94 pierces the shape memory rubber 93 as shown in FIG. 14A and the needle 94 is removed, a pinhole 95 is formed as shown in FIG. 14B. Also, due to the shape memory effect, the pin pole 95 is eliminated as shown in FIG.

Next, the operation of the present embodiment will be described. When it is difficult to use the existing light source device, for example, when the environment in which the endoscope inspection is performed is away from the place where the existing light source device is installed, the battery type light source is attached to the endoscope main body 2. 3 is used.

In this case, the battery housing cover 38 is fitted into the attachment / detachment opening of the battery housing portion 37 of the battery type light source 3, and the cover fixing dial 87 is rotated and securely attached to the battery type light source 3. Or put it in a mounted state. In this state, as shown in FIG. 7, the connection socket 9 is fitted to the light guide base 8 of the endoscope main body 2, and the lid fixing dial 87 is set at a position where the cover fixing dial 87 faces the dial engaging portion 89. As shown, the battery type light source 3 side is pushed into the endoscope main body 2 side.

Then, as shown in FIG. 9, the lid fixing dial 87 is engaged with the dial engaging portion 89, and when the click convex portion 82 of the connection socket 9 gets over the click ring 81 of the light guide base 8, the light guide base is closed. The inner peripheral surface 9a of the connection socket 9 comes into contact with the outer peripheral surface of the taper 8 and can be mounted (connected / fixed) with a click feeling.

In this state, as shown in FIG. 5, the cover fixing dial 87 is almost in contact with the cutout surface of the dial engaging portion 89.

In this state, the lamp 22 is turned on by rotating the lamp holder 35 by 90 °, and the endoscope inspection can be performed. After the inspection is completed, the endoscope main body 2 is pulled out from the inspection target site, and then the lamp 22 may be turned 90 ° to turn off the lamp 22.

When disinfection is performed after the endoscope inspection, if the battery-type light source 3 is mounted and immersed in a disinfecting solution, the endoscope body 2 and the battery-type light source 3 are also in a watertight state. , Disinfection can be performed.

On the other hand, if the battery housing cover 38 is not set in a water-tight mounting state at the attachment / detachment opening of the battery housing portion 37 of the battery-type light source 3, if the mounting state is insufficient, the battery housing lid 38 will not be as tight as the water-tight mounting state. Also, the lid fixing dial 87 protrudes toward the endoscope main body 2.

For this reason, before the click convex portion 82 of the connection socket 9 gets over the click ring 81 of the light guide base 8, the cover fixing dial 87 hits the cutout surface of the dial engaging portion 89, and the light guide base 8 is attached to the battery type. Light source 3 cannot be mounted.

For this reason, the battery-type light source 3 is not sufficiently mounted (that is, the battery housing lid 38 is mounted in a watertight manner).
It is possible to prevent the endoscope inspection from being performed while the endoscope is not fixed, and to surely prevent the endoscope from being immersed in the disinfecting solution in an insufficiently mounted state after the endoscope inspection.

According to the present embodiment, the battery type light source 3
The battery-type light source 3 can be securely mounted on the endoscope main body 2 only when the battery storage cover 38 is mounted and fixed to the battery-type light source main body in a water-tight manner. Can be immersed for disinfection.

For this reason, it is possible to prevent the endoscope inspection from being performed in a state where the battery housing cover 38 of the battery-type light source 3 is not attached to the battery-type light source body in a water-tight manner. Inconveniences such as causing the battery 36 to be in a leakage state can be reliably prevented.

In the present embodiment, it is possible to prevent the endoscope inspection from being performed in a state where the battery housing cover 38 of the battery-type light source 3 is not attached to the battery-type light source body in a watertight manner as described above. In other words, if the endoscope inspection is performed without setting the watertight mounting state, the inside of the battery storage room may be contaminated. In such a case, the inside of the battery storage room is also disinfected. I have to do
In the present embodiment, such inconvenience can be reliably prevented.

(Second Embodiment) Next, a second embodiment of the present invention will be described with reference to FIG. In the present embodiment, a connection mechanism is provided which can set the battery-type light source to a lighting state only when the battery housing lid of the battery-type light source is attached to the battery-type light source body in a watertight manner.

In this embodiment, for example, the structure shown in FIG. 15 is provided by providing the following connection mechanism in FIG. That is, a connection ring 97 made of metal or the like is provided at a position on the inner peripheral surface of the attachment / detachment opening of the main body 34 formed of the insulation member in FIG. Contact points 38a and 38b are provided at two places on the outer peripheral surface of the formed battery storage lid 38,
These contacts 38a and 38b are respectively wired with contact screws 62.

In the first embodiment, the two contact screws 62 are electrically connected to each other. However, in this embodiment, the two contact screws 62 are electrically non-conductive, and the contacts 38 a and 38 b come into contact with the connection ring 97. And electrically conduct. The contacts 38 a and 38 b are configured to contact the connection ring 97 at a position where the battery storage lid 38 is attached to the main body 34 in a watertight manner. Other configurations are the same as those of the first embodiment.

According to the present embodiment, the battery storage lid 3
8 is attached to the body 34 in a watertight manner, the first
By rotating the lamp holder 35 as described in the first embodiment, the switch 22 can be turned on to turn on the lamp 22, or the switch can be turned off to turn off the lamp. In a state where the main body 34 is not attached in a watertight manner, the contacts 38a, 38
Since b does not contact the connection ring 97, the lamp 22 cannot be turned on even when the switch is turned on.

That is, unless the battery storage lid 38 is set in a state of being attached to the main body 34 in a watertight manner, the lamp 22 cannot be turned on, so that the endoscopic inspection cannot be performed. As a result, similarly to the first embodiment, it is possible to reliably prevent the endoscope inspection from being performed in an insufficiently mounted state, and to prevent the subsequent immersion in the disinfectant solution by mistake. .

This embodiment has similar effects in addition to the effects of the first embodiment. If the battery storage lid 38 is not set in a state of being attached to the main body 34 in a water-tight manner, the lamp 22 cannot be turned on, so that the endoscope inspection cannot be performed. For this reason, it is possible to prevent the endoscope inspection from being performed in an insufficiently mounted state.

The present embodiment is not limited to the case where the present invention is applied to the endoscope 1 having the structure of the first embodiment, but may be applied to other structures. For example, in the battery unit main body 49 and the case 51 in Japanese Patent Application No. 8-39939, a connection ring 97 and contacts 38a and 38b are provided, and the contacts 38a and 38b and the conductive metal fitting 53 are connected to each other and wired. Only when the case 51 is attached to the unit main body 49 in a water-tight manner, the two conductive fittings 53 may be connected to each other.

Also in this configuration, the lamp 41 can be set to the lighting state only when the case 51 is attached to the battery unit main body 49 in a water-tight manner. Since the state cannot be set, it is possible to reliably prevent the endoscope from being erroneously performed. For this reason, it can also be prevented from being immersed in the disinfecting solution in an insufficiently watertight and insufficiently attached state.

[Supplementary Notes] An endoscope having an endoscope main body having a light guide fiber for guiding illumination light, and a battery-type light source detachably attached to the endoscope main body and supplying illumination light to a light incident end of the light guide fiber. In the mirror, a connection mechanism is provided in which the battery-type light source is connected to and fixed to the endoscope main body only when the battery housing lid of the battery-type light source is attached to the battery-type light source body in a watertight manner. Endoscope that features.

2. The battery according to claim 1, wherein an engaging portion is provided so that when the battery type light source is connected to and fixed to the endoscope main body, the outer surface of the battery housing lid and the outer surface of the endoscope main body are almost in contact with each other. Endoscope. 3. 3. The endoscope according to claim 2, wherein an engagement portion between the endoscope main body and the battery storage lid has an uneven shape and is fitted to each other. 4. The endoscope according to claim 1, wherein the endoscope main body and the battery-type light source each have a watertight structure even in a single state.

5. An endoscope having an endoscope main body having a light guide fiber for guiding illumination light, and a battery-type light source detachably attached to the endoscope main body and supplying illumination light to a light incident end of the light guide fiber. In the mirror, a connection mechanism that can set the battery-type light source to a lighting state only when the battery housing lid of the battery-type light source is attached to the battery-type light source body in a watertight manner is provided. Endoscope. (Purpose of Supplementary Note 5) An endoscope capable of performing an endoscopy only when the battery housing lid of the battery-type light source is attached to the battery-type light source body in a watertight manner.

[0089]

As described above, according to the present invention, an endoscope body having a light guide fiber for guiding illumination light, and a light incident on the light guide fiber detachably attached to the endoscope body. In an endoscope having a battery-type light source that supplies illumination light to an end portion, the battery-type light source is mounted only when the battery housing lid of the battery-type light source is attached to the battery-type light source body in a watertight manner. Since a connection mechanism that is connected and fixed to the endoscope body is provided, even when disinfecting by dissolving in an antiseptic solution after endoscopy, it is not necessary to check whether it is in a watertight state. Even if the battery housing lid is immersed in the disinfecting solution and disinfected, the battery housing lid is in a water-tight mounting state, so that it is possible to reliably prevent the occurrence of electric leakage and poor contact.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an overall configuration of an endoscope according to a first embodiment of the present invention.

FIG. 2 is a view showing the shape and the like of a distal end portion of the endoscope main body.

FIG. 3 is a sectional view showing the structure of an objective lens system.

FIG. 4 is a sectional view showing a structure of a front lens unit in a modification of FIG. 3;

FIG. 5 is a cross-sectional view showing the structure of the light guide base and the battery-type light source when the battery-type light source is mounted.

FIG. 6 is a view showing lines AA, BB, and CC of FIG. 5;

FIG. 7 is a side view showing a state in which a battery type light source is mounted on a light guide base of the endoscope main body.

8 is a diagram showing a cross section taken along line EE and line FF in FIG. 7, respectively;

FIG. 9 is a side view showing a state in which a battery-type light source is mounted on a light guide base of the endoscope main body.

FIG. 10 is a cross-sectional view showing a structure including its periphery at a lamp holder mounting position.

FIG. 11 is a cross-sectional view showing a structure including its periphery at a lamp holder removal position.

FIG. 12 is a developed view showing the function of the lamp holder.

FIG. 13 is a diagram showing a state in which an insertion portion is inserted into a narrow lumen and observation is performed.

FIG. 14 is an explanatory diagram of the operation of the protection tube of the bending portion.

FIG. 15 is a cross-sectional view showing a structure of a part of a light guide base and a battery-type light source in a mounted state in which the battery-type light source according to the second embodiment of the present invention is mounted.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Endoscope 2 ... Endoscope main body 3 ... Battery type light source 4 ... Light guide cable 5 ... Insertion part 6 ... Operation part 8 ... Light guide base 9 ... Connection socket 10 ... Tip part 21 ... Light guide fiber 22 ... Lamp 24 Objective lens system 34 Battery-type light source main body 35 Lamp holder 36 Battery 37 Battery storage 38 Battery storage lid 39 Lamp holder storage 41 Switch case 42, 52, 84, 88 O-ring 81 Click ring 82 ... Click convex part 85 ... Screw-in rod 87 ... Lid fixed dial 89 ... Dial engaging part

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[Procedure amendment]

[Submission date] March 31, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0021

[Correction method] Change

[Correction contents]

The front lens portion 27a has a cylindrical lens frame 2.
6, water-tightly adhered and fixed over the entire circumference of the lens,
The front lens portion 27b is fixed to the lens frame 26 over the entire outer peripheral surface of the lens or by partial bonding (for example, three-point bonding).

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0034

[Correction method] Change

[Correction contents]

The lamp holder 35 has a substantially cylindrical shape.
A screw hole is provided in a concave portion on the front side thereof, and a lamp mounting member 45 to which the lamp 22 is detachably mounted by screwing is mounted .

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0035

[Correction method] Change

[Correction contents]

A reflector 46 is housed in the lamp holder housing 39. The reflector 46 is screwed into a cylindrical spring holding member 47 by screwing, and the rear end of the spring holding member 47 is connected to the main body 34. It is fixed by screwing. A coil spring 4 is provided on the inner peripheral side of the spring holding member 47.
The front end of the coil spring 48 having a larger outer diameter than the body of the coil spring 48 is fixed so as to be sandwiched between the reflector 46 and the spring pressing member 47. The coil spring 48 constantly urges the lamp mounting member 45 rearward. Note that the coil bar
The broken line shown on the rear end side of the spring 48
Indicates natural length.

[Procedure amendment 4]

[Document name to be amended] Drawing

[Correction target item name] Fig. 6

[Correction method] Change

[Correction contents]

FIG. 6

[Procedure amendment 5]

[Document name to be amended] Drawing

[Correction target item name] FIG.

[Correction method] Change

[Correction contents]

FIG.

Claims (1)

[Claims] An endoscope body having a light guide fiber for guiding illumination light; and an endoscope body detachably attached to the endoscope body.
An endoscope having a battery-type light source that supplies illumination light to the light-incident end of the light guide fiber, only when the battery housing lid of the battery-type light source is attached to the battery-type light source body in a watertight manner. An endoscope comprising a connection mechanism for connecting and fixing the battery type light source to the endoscope main body.