JP3401200B2 - Endoscope device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endoscope apparatus using a small battery-type light source which is detachably mounted on an operation unit as a light source apparatus for an endoscope. 2. Description of the Related Art In general, a battery type light source endoscope is excellent in portability, and is excellent in emergency treatment or bedside treatment in which it is difficult to carry a large light source device. Demonstrate. For example, Japanese Patent Application Laid-Open No. 9-19406 discloses a simple configuration in which a battery-type light source using a battery such as a dry battery or a rechargeable battery as a power source for an illumination lamp is detachably attached to an operation unit of an endoscope body. A type endoscope device has been proposed. [0004] In the above-described endoscope apparatus, a hand for gripping or operating the operation section of the endoscope is touched in order to prevent a user from being burned by heat generated from a lamp of a battery-type light source. The structure made it difficult for heat to be transmitted to the outer surface. In addition, a space for arranging the lamp and a space for arranging the battery are provided to facilitate replacement of the lamp and the battery. However, as shown in FIG. 8, for example, the temperature characteristics of a 3V lithium battery CR123, which is a power supply used in a general battery type light source, are within the range of general use conditions. In this case, the higher the operating temperature, the longer the predetermined voltage is maintained over a long period of time. Therefore, effective use of the heat generated from the lamp has been desired. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an endoscope apparatus that prolongs battery life by actively warming a battery with heat generated from a lamp. [0008] An endoscope apparatus according to the present invention comprises:
An endoscope capable of observing the inside of the subject, a light source detachably provided to the endoscope main body, capable of emitting illumination light for illuminating the inside of the subject, and a power supply for lighting the light source A battery-type light source unit capable of supplying the illumination light to the endoscope, a light source housing unit formed in the battery-type light source unit and capable of housing the light source, and formed in the battery-type light source unit. A power supply accommodating portion capable of accommodating the power supply, and a communication hole communicating the light source accommodating portion and the power supply accommodating portion are provided. According to this configuration, the heat generated from the lamp of the battery-type light source that is detachably attached to the endoscope operation section is transmitted from the lamp to the power supply via the heat transfer means, so that the power supply can be warmed. Embodiments of the present invention will be described below with reference to the drawings. 1 to 5 relate to an embodiment of the present invention. FIG. 1 is a diagram illustrating a schematic configuration of an endoscope device, FIG. 2 is a diagram illustrating a cover portion, and FIG. 3 is a diagram illustrating a light source body member. FIG. 4 is a diagram for explaining a battery light source main body portion in which a contact member is disposed on a light source main body member, and FIG. 5 is a cross-sectional view for explaining the configuration of a battery type light source. FIG. 3A is a sectional view illustrating a battery light source main body, and FIG.
FIG. 3B is a diagram when the battery light source main body is viewed from a cutting line AA in FIG. As shown in FIG. 1, an endoscope apparatus 1 of the present invention
The endoscope 4 includes an elongated insertion portion 2 and an operation portion 3 serving also as a grip portion located at a base end portion of the insertion portion 2, and protrudes from a side portion of the operation portion 3 of the endoscope 4. A battery-type light source 5, which is a light source device for supplying detachable illumination light to a light guide base 31 having an external thread portion 31a formed on an outer peripheral surface, and a monitor unit 62 detachably attached to the operation unit 3 via a connector 61. And a monitor-type video processor (hereinafter abbreviated as video processor) 6 provided with The elongated insertion section 2 of the endoscope 4 has a rigid distal end 21 in order from the distal end side, a bendable section 22 which is connected to the proximal end side of the distal end section 21 and is bendable. And a flexible tube portion 23 having flexibility from the base end of the portion 22 to the distal end of the operation portion 3. A light guide (not shown) for guiding illumination light and a signal cable (not shown) extending from an observation optical system (not shown) disposed on the distal end surface of the distal end portion are inserted into the insertion portion 2. And the light guide is an operation unit 3
The signal cable is inserted through the inside of the operation unit 3 so that the base end thereof is electrically connected to the video processor 6. 3 at the rear end. A bending operation is performed by operating the operating portion 3 so that the bending portion 22 bends by rotating the operating portion 3 so that an observation window or an illumination window (not shown) provided on the distal end surface of the distal end portion 21 is directed in a desired direction. A suction button 33 for sucking a body fluid or the like through an opening of a lever 32 or a suction tube (not shown) also serving as a treatment instrument insertion channel provided on the distal end surface, and from near the base end of the suction button 33 A protruding suction base 34 is provided. The suction base 34 is connected to a suction device (not shown) through a tube (not shown). The user operates the suction button 33 as needed to communicate with the suction tube. The body fluid and the like are sucked through the suction mouthpiece 34. A treatment tool insertion port 35 communicating with the suction tube is provided at the distal end side portion of the operation section 3, and a treatment tool such as a biopsy forceps is inserted through the treatment tool insertion port 35. As a result, the treatment tool projects from the opening of the suction tube and is led out to the treatment site. Reference numeral 36 denotes a forceps stopper for closing the treatment instrument insertion port 35. Further, on the back side of the treatment instrument insertion port 35, a ventilation mouthpiece 37 is protrudingly provided. By sending air from the ventilation mouthpiece 37 to the inside of the endoscope 4, the endoscope 4 is opened.
For water leakage inspections. On the other hand, the battery-type light source 5 includes a lamp light source main body (hereinafter referred to as a light source main body) having a lamp arrangement space for installing a lamp described later and a power supply storage space for storing a dry battery or a rechargeable battery serving as a power supply for the lamp. 5)
1 and a cylindrical cover 52 serving as a lid which is detachably and integrally connected to and fixed to the light source main body 51. In this embodiment, a dry battery is used as a power source. At the side of the light source body 51, a connecting portion 53 having a fixed ring 54 connected to the light guide base 31 and the lamp are arranged at predetermined positions in the lamp arrangement space. A lamp holder 55 is provided, which also functions as a switch for turning on or off by turning. As shown by an arrow in FIG. 1, a fixed ring 54 of the connecting portion 53 is connected to the light guide base 31 to connect and fix the battery type light source 5 and the endoscope 4 to thereby form the light source main body. Lamp in unit 51 (reference numeral 83 in FIG. 5)
The light guide base 31 fixed to the light guide base 31 is opposed to a base end surface, which is a light incident end. By rotating the lamp holder to emit light, the illumination light from the lamp is supplied to the base end face of the light guide, and the supplied illumination light is inserted through the insertion portion 2. The light is guided to the distal end portion 21 by a light guide, and emitted toward an object from an illumination window (not shown) provided on the distal end surface. As shown in FIG. 2, a contact spring portion 57a that is in electrical contact with one electrode 84a of a dry battery (see reference numeral 84 in FIG. 5) is provided on the bottom 56a of the cylindrical cover portion 52 having an internal space 56. Are fixedly provided. The light source main body 5 is provided on the peripheral surface on the opening side.
A female screw portion 58 for screwing and fixing integrally with the screw 1 is formed. Reference numeral 59 denotes an O-ring described later (reference numeral 8 in FIG. 4).
1) is a contact surface to be adhered. As shown in FIGS. 3 (a) and 3 (b), a cylindrical light source body member 50 constituting the light source body 51 has the lamp holder 55 and the lamp holder 55 orthogonal to the central axis of the light source body. A power supply having a lamp chamber through-hole 65 forming a lamp arrangement space in which a lamp attached to the lamp is disposed, and a central axis substantially perpendicular to the central axis of the lamp chamber through-hole 65 and parallel to the central axis of the light source main body. A battery housing hole 66 forming a housing space and a contact pin (reference numeral 76 in FIG. 4) having a central axis substantially perpendicular to the central axis of the lamp chamber through-hole 65 and parallel to the central axis of the light source body are arranged. A contact pin through hole 67, a communication hole 68 as a heat transfer means for connecting the lamp chamber through hole 65 and the battery housing hole 66, and the other electrode of the battery housed in the battery housing hole 66. 84b makes electrical contact Both contact below plate (Fig. 4 reference numeral 7
4) A contact member to be described later for conducting with (4) 75 (FIG. 4).
And a coaxial contact member through-hole 69 is formed in the center axis of the battery housing hole in which is disposed. That is, by providing the communication hole 68, the lamp chamber through hole 65 and the battery housing hole 66 form one space. On the outer peripheral surface of the light source main body 51, a male screw 70 is screwed into the female screw 58 of the cover 52.
Further, an O-ring groove 71 for disposing an O-ring for maintaining watertightness between the light source main body 51 and the cover 52 is formed. Reference numeral 72 denotes a notch for arranging a contact plate for arranging a contact plate described later, and reference numeral 73 denotes a notch for the contact pin 7.
6 is a sliding relief groove in which the knob portion 76a provided in 6 slides. As shown in FIG. 4, an elastic material such as phosphor bronze is provided in the lamp chamber through hole 65 so as to correspond to the lamp of the lamp holder 55 disposed in the contact member through hole 69 and the lamp chamber through hole 65. A contact member 75 electrically connected to the thin plate member 74 is fitted into the through hole 69 for the contact member so that the thin plate member 74 having the Is fixed so as to make electrical contact with the other electrode 84b of the battery. The contact pin 76 is formed in the contact pin through hole 67 by rounding the tip in a substantially cross shape, and a conductive contact spring for urging the contact pin 76 toward the lamp chamber through hole 65. The contact pin 76 and the contact spring 77 are inserted into the contact pin through hole 6.
The contact plate member 78 for preventing contact with the contact spring 77 and the contact plate 57 is disposed in the contact plate disposing notch 72 to electrically connect the contact spring 77 and the contact plate 57. As a result, the tip of the contact pin 76 projects into the lamp chamber through-hole 65 so as to be able to protrude and retract by a predetermined amount, while the contact pin 7a is operated by operating the knob 76a.
6 is pushed down to the contact plate member 78 side against the urging force of the contact spring 77. Reference numeral 78a denotes a contact spring portion that contacts the contact plate 57 by elastic force. Further, a support frame 8 having a substantially pipe-shaped condensing lens 79 water-tightly adhered and fixed to the inner hole of one opening of the lamp chamber through-hole 65 in the inner hole.
0 is fixed in a watertight manner by, for example, an adhesive. The support frame 80 has a male screw portion 31 a of the light guide base 31.
Ring 5 formed on the inner peripheral surface with a female screw portion 54a screwed into
4 is arranged rotatably without dropping off from the support frame 80. The O-ring 81 is disposed in the O-ring groove 71 to form the light source body 51. Referring to FIG. 5, the configuration of the battery type light source 5 will be specifically described. A lamp holder 55 which can be freely attached to and detached from the lamp chamber through-hole 65 of the light source main body 51 is a substantially pipe-shaped lamp mounting member 82 formed of a conductive member on the outer peripheral surface of a convex portion 55a provided at the tip in a substantially cylindrical shape. Is fixed. A lamp 83 made of halogen or the like is attached to the lamp mounting member 82 in a replaceable manner. By attaching the lamp 83 to the lamp mounting member 82, the lamp 83 is provided on the outer peripheral portion of the lamp 83. One of the electrodes 83a is in electrical contact with the lamp mounting member 82. On the other hand, the projection 55a of the lamp holder 55
A concave portion 55b is formed at the center of the concave portion 5b.
5b is the other electrode 8 provided at the base end of the lamp 83.
One end of the contact plate 85 is disposed so as to be in electrical contact with 3b. The other end of the contact plate 85 is provided in the middle of the lamp holder 55 with the groove 5 formed in the circumferential direction.
5c is located at a predetermined position corresponding to a mark (not shown) provided on the base end face of the lamp holder 55. At a predetermined position on the base side of the convex portion 55a of the lamp holder 55, a positioning notch 55e provided with a mounting slope 55d is formed.
The lamp holder 55 is pushed into the lamp chamber through-hole 65 with the position of the contact pin 5e and the position of the contact pin 76 aligned. When the lamp holder 55 is pushed into the lamp chamber through-hole 65, the distal end of the contact pin 76 protrudes and retracts, and the outer peripheral surface of the lamp mounting member 82, the mounting slope 55d, the lamp holder 55 The outer peripheral surface is moved to engage with the groove 55c where the contact plate 85 is not arranged. Since the contact pin 76 is engaged with the groove 55c, the lamp holder 55 is disposed at a predetermined position in the lamp chamber through hole 65. At this time, the outer peripheral surface of the lamp mounting member 82 comes into electrical contact with the thin plate member 74 disposed on the inner peripheral surface of the lamp chamber through hole 65. Also, the lamp holder 5
The O-ring 86 arranged on the outer peripheral surface of the lamp chamber 5
The inner watertightness is ensured by closely adhering to the inner peripheral surface of the. In this state, by rotating the lamp holder 55 by a predetermined amount in a predetermined direction against the pressing force of the O-ring 86, the contact plate 85 disposed in the groove 55c is brought into contact with the contact. The contact plate 85 moves relatively to the pin 76 so that the contact plate 85 electrically contacts the tip of the contact pin 76. When removing the lamp holder 55 from the light source main body 51, the position of the notch 55e and the position of the contact pin 76 must be matched, and then the knob 76a
Is held down in a state where it is pushed down to the contact plate member 78 side against the urging force of the contact spring 77, and can be removed by the reverse operation of pushing in. Code 87
Is a conductive spring for urging the lamp holder 55 outward, and this spring 87 comes into contact with the lamp mounting member 82 and the thin plate member 74. A dry battery 84 is placed in the battery housing hole 66, and the female screw 58 of the cover 52 is screwed into the male screw 70 of the light source body 51, and the cover 52 is attached to the light source body 51.
And connected together. At this time, the light source body 51
A space section 88 is formed between the cover section 52 and the cover section 52. By integrally connecting the cover 52 to the light source body 51 as described above, the cover 52
The contact spring portion 57a of the contact plate 57 provided on the contact plate 57 electrically contacts the one electrode 84a of the dry battery 84, and the contact spring portion 78a of the contact plate member 78 and the contact plate 57 are electrically contacted. Further, the other electrode 84b of the dry battery 84 pressed by the urging force of the contact spring portion 57a is
5 makes electrical contact with the tip surface. Thus, the other electrode 84b of the dry battery 84 and the one electrode 83a provided on the outer periphery of the lamp 83 are connected to the lamp mounting member 82, the contact member 75 and the thin plate member 74 or the spring 87. Through which electrical conduction occurs. On the other hand, one electrode 84a of the dry battery 84
Then, the contact plate member 78, the contact spring 77, and the contact pin 76 provided on the light source body 51 are electrically connected. Therefore, by rotating the lamp holder 55 to bring the contact pin 76 and the contact plate 85 into contact with each other as shown in the figure, one end of the contact plate 85 is connected to the other electrode of the lamp 83. 83b, the other electrode 83b of the lamp 83 and the dry cell 8
4, the contact plate 85, the contact pin 76,
The lamp 83 is turned on in a state of being electrically connected via the contact spring 77 and the contact plate member 78. The heat generated when the lamp 83 is turned on is conducted from the lamp chamber through hole 65 to the battery housing hole 66 through the communication hole 68, and the internal temperature of the battery housing hole 66 gradually increases. The battery 84 is warmed by moving. When the lamp 83 is turned off, the lamp holder 55 is turned in the opposite direction to the turning on. As a result, the lamp 83 is turned off. When replacing the dry battery 84, the dry battery 84 can be easily replaced by removing the cover portion 52 from the light source main body portion 51. As described above, by providing the communication hole communicating the lamp chamber through hole and the battery housing hole, the heat generated by the lighting of the lamp disposed in the lamp chamber through hole is transmitted through the communication hole. Guided to the battery storage hole, the battery disposed in the storage hole can be warmed to obtain a use environment suitable for long-time battery use. As a result, the life of the battery is extended, and efficient work can be performed. Further, since the lamp holder in which the lamp arranged in the lamp chamber through-hole is arranged has a switch function of turning on and off by turning, the lamp holder is arranged in this lamp holder. Unless the O-ring is rotated against the pressing force of the O-ring, it is not possible to switch on / off the lamp, so that it is possible to prevent the user from accidentally turning off the lamp being turned on. Further, when the light source body and the cover are integrally connected and fixed, a space is provided between the light source body and the cover, so that the heat generated by the heat generated from the lamps. Can be prevented from being directly transmitted to the cover and the external temperature being directly transmitted to the heated battery. Note that, as shown in FIG.
In order to more effectively warm the dry cells 84 disposed in the lamp 6, the dry batteries 84 are formed by a heat conducting frame 90 made of a metal member having good heat conductivity as a heat transfer means for efficiently transmitting the heat generated by the lamps 83. Is covered. As a result, the battery can be quickly heated. By the way, in the conventional battery-type light source, if the user forgets to operate the switch provided on the battery light source, the lamp is turned on when it is unnecessary, thereby shortening the life of the lamp and the dry battery. Failures occurred frequently. For this reason, a mechanism for preventing forgetting to turn off the lamp has been desired. In this embodiment, a timer is provided for the battery type light source. As shown in FIG. 7, the battery light source main body 91 of the battery type light source 5 of the present embodiment is provided with a timer 92 for controlling the lighting time of the lamp. The timer 92 is provided with a lighting time setting switch 93 and an operating state changeover switch 94. The time to be used is set by the lighting time setting switch 93, and thereafter, the timer 9 is operated by operating the operating state changeover switch 94.
The operation of Step 2 is started and the lamp is turned on, so that the endoscope inspection can be performed. Then, since the lighting time of the lamp is controlled by the timer 92, even if the lamp of the battery type light source is forgotten to be turned off after the inspection, the lamp is turned off after the lapse of the set time. The timer 92
Is driven by a battery that turns on the lamp. As described above, by providing the timer for setting the lighting time of the lamp in the battery type light source, it is possible to prevent the battery and the lamp from being consumed by turning on the lamp more than necessary. It is also possible to provide a mechanism for issuing a warning at a preset time, such as 5 minutes before turning off the lamp, to prevent the lamp from suddenly turning off during the inspection. It should be noted that the present invention is not limited to only the above-described embodiments, but can be variously modified without departing from the gist of the invention. [Appendix] According to the above-described embodiment of the present invention as described in detail above, the following configuration can be obtained. (1) An endoscope having a light guide fiber for guiding illumination light and having a light incident end of the light guide fiber disposed in an operation section, and being detachably attached to the operation section.
In an endoscope apparatus comprising: an illumination lamp for supplying illumination light to a light incident end of the light guide fiber; and a battery-type light source having a power supply for lighting the illumination lamp, the heat generated from the illumination lamp is applied to the battery-type light source. Endoscope device provided with a heat transfer means for transmitting heat to the power supply. (2) The endoscope apparatus according to appendix 1, wherein the power source is a dry battery or a rechargeable battery. (3) The endoscope apparatus according to appendix 2, wherein the heat transfer means is a communication hole that communicates a space where the illumination lamp is arranged and a space where the dry battery or the rechargeable battery is arranged. (4) The endoscope apparatus according to appendix 1, wherein the heat transfer means is a member having good thermal conductivity that covers the power supply. (5) The endoscope device according to attachment 4, wherein the member having good thermal conductivity is a metal member. As described above, according to the present invention, it is possible to provide an endoscope apparatus in which the battery life is improved by actively heating the battery with the heat generated from the lamp.

BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1 to 5 relate to an embodiment of the present invention,
FIG. 1 is a diagram illustrating a schematic configuration of an endoscope apparatus. FIG. 2 is a diagram illustrating a cover portion. FIG. 3 is a diagram illustrating a light source main body member. FIG. FIG. 5 is a cross-sectional view illustrating a configuration of a battery type light source. FIG. 6 is a diagram illustrating a heat transfer unit further provided in the battery light source main body. FIG. 7 is provided with a timer. 8 illustrates temperature characteristics of a 3V lithium battery CR123. [Description of References] 5. Battery type light source 51. Battery light source body (light source body) 52. Cover part 55. Lamp holder. 65 ... lamp chamber through hole 66 ... battery storage hole 68 ... communication hole 83 ... lamp 84 ... dry battery

──────────────────────────────────────────────────続 き Continuing on the front page (72) Takashi Suzuki, Inventor 2-43-2 Hatagaya, Shibuya-ku, Tokyo O-limpus Optical Co., Ltd. (72) Inventor Seiichi Hosoda 2-43-2, Hatagaya, Shibuya-ku, Tokyo O-Limpus Optical Industry Co., Ltd. (72) Masaaki Nakazawa, Inventor 2-43-2 Hatagaya, Shibuya-ku, Tokyo O-Limpus Optical Industry Co., Ltd. Kazutaka Nakachi, In-house (72) 2-43-2, Hatagaya, Shibuya-ku, Tokyo No. Olympus Optical Co., Ltd. (72) Inventor Takeaki Nakamura 2-43-2 Hatagaya, Shibuya-ku, Tokyo In Olympus Optical Co., Ltd. (56) References JP-A-10-127576 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) G02B 23/24 A61B 1/06 G02B 23/26

Claims (1)

(57) Claims 1. An endoscope capable of observing the inside of a subject, and detachably provided on the endoscope main body, and
A light source capable of emitting illumination light for illuminating
A power source for lighting, and the illumination light is provided to the endoscope.
Battery-type light source unit capable of supplying a light source, and capable of accommodating the light source formed in the battery-type light source unit
Light source accommodating portion and the power source formed in the battery type light source portion
Power supply accommodating section, and a communication hole communicating the light source accommodating section and the power accommodating section.
The endoscope apparatus characterized by having, when.