JP3569356B2 - Simple endoscope device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a simple endoscope apparatus in which an illumination light supply unit for supplying illumination light to a light guide is attached to an operation unit.
[0002]
[Prior art]
2. Description of the Related Art In a so-called simple type endoscope apparatus in which a light emitter for illumination is provided in an operation unit, an illumination light supply unit including a light source lamp and a dry battery serving as a power source is attached to the operation unit of the endoscope. . A switching mechanism for turning on and off the light source lamp is provided at the protruding end of the illumination light supply unit.
[0003]
[Problems to be solved by the invention]
However, when the switching mechanism is provided at the protruding end of the illumination light supply unit, the length of the illumination light supply unit protruding from the operation unit increases, and the center of gravity of the illumination light supply unit becomes far from the operation unit. The weight balance in the state where the user holds and holds is deteriorated, and the operability is impaired.
[0004]
Therefore, an object of the present invention is to provide a simple endoscope apparatus with good operability and good weight balance in a state where the illumination light supply unit is attached to the operation unit.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, a simplified endoscope apparatus according to the present invention has a light guide for transmitting illumination light for illuminating an object, an incident end portion of the light guide being arranged on an operation unit, and an illumination light provided to the light guide. In a simplified endoscope device in which an illumination light supply unit incorporating a light source lamp for supplying light is attached to the operation unit, a switching mechanism for turning on and off the light source lamp is provided between the illumination light supply unit. It is characterized in that it is provided in a portion.
[0006]
The operating means of the switching mechanism may be formed in an annular shape around the central axis of the illumination light supply unit, and the operating means of the switching mechanism may rotate around the central axis of the illumination light supply unit. It may be operated.
[0007]
The switching mechanism may be watertight so that water does not enter the inside from the outside.
Further, a socket for receiving the light source lamp may be disposed inside an intermediate portion of the illumination light supply unit in which the switching mechanism is disposed, and a battery housing for housing a battery serving as a power source of the light source lamp. The unit may be provided behind the socket of the illumination light supply unit.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiments will be described with reference to the drawings.
FIG. 7 is a side view of the operation section 2 of the endoscope, and FIG. 8 is a rear view. The lower end of the operation section 2 is connected to the base end of the insertion section 1 covered by a flexible tube. I have.
[0009]
The lower part of the operation part 2 at about three-quarters is a grip part 2a, and a forceps insertion port part 4 is provided between the grip part 2a and the insertion part 1 so as to project diagonally forward. . Reference numeral 3 denotes a pressure adjusting valve for adjusting the pressure inside the airtight endoscope.
[0010]
A suction operation valve 6 for performing a suction operation through a forceps channel (not shown) inserted into the insertion portion 1 is provided on the operation mechanism portion 5 above the grip portion 2a of the operation portion 2, and a distal end of the insertion portion 1. A bending operation lever 7 for remotely bending a bending portion (not shown) formed in the portion is disposed on the front surface and the rear surface, and an eyepiece 8 protrudes from the upper surface.
[0011]
An illumination light guide fiber bundle 9 for transmitting illumination light for illuminating a subject has an incident end portion disposed in the operation mechanism section 5 and passes through the insertion section 1 and the grip section 2a of the operation section 2. The emission end is disposed at the tip of the insertion section 1.
[0012]
An illumination light supply unit 30 for supplying illumination light to the light guide fiber bundle 9 is detachably attached to a side surface of the operation mechanism unit 5.
[0013]
As shown in FIG. 8, the illumination light supply unit 30 includes a light source lamp 32 that emits illumination light to be supplied to the light guide fiber bundle 9, and a battery 100 that is a power supply for lighting the light source lamp 32. And so on. As the battery 100, any battery such as a dry battery or a rechargeable nickel cadmium battery may be used.
[0014]
The battery 100 is replaceable by removing a cap portion 30c detachably attached to the protruding end of the illumination light supply unit 30. Reference numeral 45 denotes a switch ring for performing a switching operation between turning on and off the light source lamp 32.
[0015]
FIG. 9 is a side view of the illumination light supply unit 30, and FIG. 1 is a side sectional view. The illumination light supply unit 30 is formed in a straight cylindrical shape as a whole, and includes The lamp compartment 30a is located near a connection portion with the main body 30b, the main body 30b is located at an intermediate portion for housing the battery 100, and the cap 30c is located at the protruding end.
[0016]
The outer wall of the main body 30b is formed by an outer cylindrical body 33 made of, for example, stainless steel or a metal or plastic subjected to a chemical-resistant surface treatment, which has good corrosion resistance (chemical resistance).
[0017]
A tubular inner cylindrical body 34 made of a copper alloy such as copper or phosphor bronze having good conductivity is inscribed inside, and both are fixed with small screws 35. The thread is sealed with an adhesive.
[0018]
The outer wall of the cap portion 30c is also formed of an outer case 37 made of a material having good corrosion resistance, and an inner case 38 made of a material having good conductivity is arranged inside the inside of the outer case 37. It is fixed at.
[0019]
The cap portion 30c is detachably attached to the main body portion 30b by screwing the inner case 38 to the inner cylindrical body 34, and is connected by an O-ring 40 attached to the outer case 37. When a waterproof seal has been made.
[0020]
The battery 100 is built over the main body 30b and the cap 30c, and is urged in the axial direction from the negative electrode side by a contact spring 42 attached to the inner case 38 of the cap 30c. The contact spring 42, the inner case 38, and the inner cylinder 34 are electrically connected to the negative electrode side of the battery 100.
[0021]
Therefore, when it is necessary to replace the battery 100, the outer case 37 is rotated around the axis and the inner cylinder 34 and the inner case 38 are unscrewed, and as shown in FIG. The unit 30c may be removed from the main unit 30b, the battery 100 may be replaced with a new one, and the cap unit 30c may be attached to the main unit 30b again.
[0022]
As shown in FIG. 1, the switch ring 45 is formed in an annular shape around the central axis of the illumination light supply unit 30, and is rotatably fitted around the outer cylinder 33 of the main body 30 b. Is rotated around the central axis of the illumination light supply unit 30.
[0023]
As shown in FIG. 4, a pair of pins 46 and 47 screwed and adhesively sealed to the switch ring 45 pass through long grooves 48 and 49 formed in the outer cylinder 33 in the circumferential direction. Furthermore, it has reached inside. As a result, the rotation range of the switch ring 45 is restricted to a range in which the pins 46 and 47 can rotate in the long grooves 48 and 49.
[0024]
In the rotation range of the first pin 46, a conductive plate spring 51 that is fixedly contacted with the inner cylindrical body 34 is disposed, and a conductive plate 52 that is connected to one electrode of the light source lamp 32 and the conductive plate spring 51 Is changed by the rotation of the first pin 46.
[0025]
That is, as shown in FIG. 5, the tip of the conductive leaf spring 51 is normally in contact with the conductive board 52, and as a result, the conductive path is connected and the light source lamp 32 is turned on.
[0026]
When the switch pin 45 is rotated to rotate the first pin 46 as shown by the broken line in FIG. 5, the conductive leaf spring 51 is pushed by the first pin 46 and separated from the conductive board 52, As a result, the conductive path is interrupted, and the light source lamp 32 is turned off.
[0027]
A click leaf spring 53 as shown in FIG. 6 is fixed to the inner cylindrical body 34 in the rotation range of one second pin 47, and the click spring 53 exerts a second force by the spring force of the click leaf spring 53. Are elastically fixed at both ends of the rotation range.
[0028]
Therefore, by rotating the switch ring 45, the switch ring 45 is elastically click-fixed at both ends of the rotation range and stopped, and the light source lamp 32 is turned on at one end position and the other end portion. Then, the light source lamp 32 is turned off.
[0029]
Note that, as shown in FIG. 9, an index for turning on / off the light source lamp 32 with respect to the rotation position of the switch ring 45 is marked on the outer cylindrical body 33 and the surface of the switch ring 45.
[0030]
Returning to FIG. 1, both the conductive leaf spring 51 and the click leaf spring 53 are fixed to the electrically insulating fixing plate 54 by screws. A pair of sealing rings 55 and 56 are attached to the front and rear surfaces of the fitting between the outer cylinder 33 and the switch ring 45 to seal the long grooves 48 and 49 from the outside. Since both X-shaped elastic rings are used as the sealing rings 55 and 56, a large frictional resistance does not occur when the switch ring 45 is rotated.
[0031]
The lamp chamber 30a is formed as a single unit, and the cylindrical lamp chamber case 59 forming the outer wall is formed of a strong stainless steel, for example. The conductive board 52 is screwed to the electric insulating member 60.
[0032]
A socket 62 for connecting the light source lamp 32 is disposed inside the switch ring 45 and is fixed to the conductive board 52, and a terminal of the light source lamp 32 into which the first electrode 63 is inserted is in contact with the conductive board 52. The terminal, into which the second electrode 64 of the light source lamp 32 is inserted, is conductively fixed to a conductive plate 66 that contacts the anode electrode of the battery 100.
[0033]
In this manner, the second electrode of the light source lamp 32 is always connected to the anode electrode of the battery 100 disposed behind the socket 62. 67 is an electrically insulating fixing plate for fixing the terminal, and 68 is an electrically insulating spacer.
[0034]
A reflecting mirror 71 for converging the illumination light emitted from the light source lamp 32 toward the incident end face of the light guide fiber bundle 9 is provided at the tip of the lamp chamber case 59 so as to surround the tip light emitting part of the light source lamp 32. It is fixedly joined to.
[0035]
A transparent cover glass 72 is fixed to a front end face of the reflecting mirror 71 by a holding nut 73. A sealant is applied to the outer peripheral surface of the cover glass 72 and sealed so that water does not enter the lamp chamber case 59 from outside.
[0036]
On the outer peripheral surface of the distal end of the lamp chamber case 59, there is formed a male screw 74 to be screwed with a female screw (not shown) formed on the inner peripheral surface of the unit receiving base 10 provided on the operation section 2 side. By screwing the two screws, the illumination light supply unit 30 is connected to the operation unit 2.
[0037]
Then, the illumination light emitted from the light source lamp 32 is reflected by the reflecting mirror 71, passes through the cover glass 72, and converges and enters the incident end face of the light guide fiber bundle 9.
[0038]
Then, by unscrewing the male screw 74 at the tip of the lamp chamber case 59 and the operation unit 2 side, the illumination light supply unit 30 is removed from the operation unit 2. Reference numeral 75 denotes an O-ring for sealing a fitting portion between the lamp chamber case 59 and the unit receiving base 10 when the illumination light supply unit 30 is connected to the operation unit 2.
[0039]
A fixed ring 77 for connecting and fixing the lamp chamber 30a to the main body 30b is rotatably fitted around the outer periphery of the lamp chamber case 59, and a male screw formed on the outer periphery of the rear end of the fixed ring 77. The lamp chamber 30a and the main body 30b are connected and fixed by screwing together the female screw 79 formed on the inner periphery of the front end portion of the outer cylindrical body 33.
[0040]
At this time, rotation between the lamp chamber case 59 and the outer cylinder 33 is regulated by engaging a rotation regulating pin 81 projecting from the lamp chamber case 59 with a groove 82 formed in the outer cylinder 33. Have been.
[0041]
Further, a fixed ring 83 fixed to the lamp chamber case 59 by the rotation restricting pin 81 is fitted around the outer periphery of the lamp chamber case 59 and is sandwiched between the fixed ring 77 and the outer cylindrical body 33, and An axial fixing between the outer cylinder 59 and the outer cylinder 33 is performed.
[0042]
Reference numeral 85 denotes an O-ring for sealing the connection between the lamp chamber case 59 and the outer cylindrical body 33. The O-ring 85, together with the O-ring 40 and the sealing rings 55 and 56, constitutes the entire illumination light supply unit 30. Sealed watertight.
[0043]
In the embodiment device configured as described above, when the light source lamp 32 is cut off, the fixed ring 77 of the lamp chamber 30a is rotated with the illumination light supply unit 30 removed from the operation unit 2, Unscrew the main body 30b from the outer cylinder 33.
[0044]
Then, as shown in FIG. 2, since the entire lamp chamber 30a can be pulled out from the main body 30b and removed, the new lamp chamber 30a may be attached to the main body 30b in the reverse order.
[0045]
The fixed ring 77 is formed to have a smaller outer diameter than the outer cylinder 33, the switch ring 45, and the like. Then, as shown in FIG. 8, when the illumination light supply unit 30 is attached to the operation unit 2, the fixed ring 77 enters the inside of the unit receiving base 10. Therefore, when attaching / detaching the illumination light supply unit 30 to / from the operation unit 2, there is no possibility that the fixed ring 77 is erroneously rotated.
[0046]
【The invention's effect】
According to the present invention, by providing a switching mechanism for turning on and off the light source lamp incorporated in the illumination light supply unit at an intermediate portion of the illumination light supply unit, the projection length of the illumination light supply unit from the operation unit is provided. Can be shortened, the weight balance in a state where the illumination light supply unit is attached to the operation unit is improved, and the operability is improved.
[Brief description of the drawings]
FIG. 1 is a side sectional view of an illumination light supply unit according to an embodiment of the present invention.
FIG. 2 is a side sectional view of the lamp chamber in a state separated from the illumination light supply unit according to the embodiment of the present invention.
FIG. 3 is a side cross-sectional view of the cap portion separated from the illumination light supply unit according to the embodiment of the present invention.
FIG. 4 is a sectional view taken along line IV-IV of the embodiment of the present invention.
FIG. 5 is a partial side view of the conductive leaf spring according to the embodiment of the present invention.
FIG. 6 is a partial side view of the click leaf spring according to the embodiment of the present invention.
FIG. 7 is a side view of the simplified endoscope apparatus according to the embodiment of the present invention.
FIG. 8 is a rear view of the simplified endoscope apparatus according to the embodiment of the present invention.
FIG. 9 is a side view of the illumination light supply unit according to the embodiment of the present invention.
[Explanation of symbols]
2 Operation unit 9 Light guide fiber bundle 30 Illumination light supply unit 32 Light source lamp 45 Switch ring

Claims (3)

An incident end of a light guide for transmitting illumination light for illuminating a subject is arranged on the operation unit, and an illumination light supply unit incorporating a light source lamp for supplying illumination light to the light guide is provided on the operation unit. In the attached simple endoscope device,
In the illumination light providing unit the light source lamp and a battery serving as its power source is arranged in straight coaxially in series, the illumination light supplying unit, the side from the operation unit in a state attached to the operating unit is configured to be in a state of straight projecting towards Rutotomoni, placed near the axis position between the conductive member the light source lamp and the battery for connecting the one electrode and the light source lamp of the battery Then, a switching mechanism for turning on and off the light source lamp is arranged in a peripheral portion thereof ,
The switching mechanism has a conductive board that is electrically connected to one electrode of the light source lamp, and a conductive leaf spring that normally contacts the conductive board, and a pin that is rotated by operating means of the switching mechanism. A simplified endoscope apparatus , wherein the light source lamp is turned off when the conductive plate spring is elastically deformed and separates from the conductive plate . The simplified endoscope apparatus according to claim 1, wherein the operation means of the switching mechanism is formed in an annular shape about a central axis of the illumination light supply unit. 3. The simplified endoscope apparatus according to claim 1, wherein the operation means of the switching mechanism is rotated around a central axis of the illumination light supply unit.

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