JP4020321B2 - Pipe-line separation type endoscopic device - Google Patents

Description

  The present invention relates to a duct-separated endoscope apparatus, and more particularly to a structure of an endoscope apparatus that includes ducts such as a suction pipe and an air / water feed pipe, and performs efficient cleaning of these ducts.

  FIG. 7 shows an overall configuration of an electronic endoscope (scope) portion of a conventional electronic endoscope apparatus. The electronic endoscope 1 includes a tip 1A having a charge coupled device (CCD), an insertion part 1B, an operation part 1C, and a cable 1D. A light guide and various pipes are connected to the end of the cable 1D. The connector 2A for connecting the signal line and the connector 2A to be connected are provided. The operation unit 1C is provided with an angle knob 3 for bending the distal end portion 1A, a suction button (mechanical on-off valve) 4A, an air / water feeding button 4B, and a forceps port for inserting a treatment instrument on the distal end side. 5 is arranged.

  In such an endoscope, there are a treatment instrument insertion channel communicating with the forceps port 5 and a suction tube for performing suction, and an air supply tube and a water supply tube for supplying / feeding air at the distal end portion 1A. The connector 2A is provided with a pipe connector 7 for connecting these pipes and external pipes.

According to the above configuration, for example, the connector 2A is connected to the light source device, the connector 2B is connected to the processor device, and the object to be observed is imaged and observed by the CCD of the tip 1A based on light irradiation by the light guide. The In addition, air / water can be supplied from the distal end portion 1A to the observation window or the like using the air supply tube or the water supply tube, and the treatment tool can be inserted and the dirt or the like in the observed body can be sucked / discharged using the suction tube.
Japanese Utility Model Publication No.59-182302

  However, since the above-described endoscope apparatus is used in a medical field, it is necessary to clean and sterilize the various pipes. However, there is a problem that the cleaning and disinfection cannot be performed efficiently. That is, the pipe line is cleaned with a brush, but it is difficult to pass the cleaning brush from the tip 1A to the pipe connector 7 (2A) at a time. This is because the length of the entire endoscope is long, there is a portion with a strong bend in the operation portion 1C in the internal conduit, and the open / close valve of the suction button 4A and the air / water supply button 4B. This is because, when a valve having a specific structure is used, the pipe line becomes complicated (partly cut) at that portion, and it is difficult to advance the cleaning brush to the back.

  Therefore, conventionally, measures such as flowing cleaning water for a long time are required, and measures such as improving the on-off valve portion have been taken so that the cleaning brush reaches as much as possible, and the cleaning operation is complicated. In addition, the structure of each part for cleaning was complicated.

  The present invention has been made in view of the above problems, and its purpose is to facilitate cleaning with a cleaning brush, and it is possible to dispense with some pipes as disposable, and this cleaning can be omitted. It is an object of the present invention to provide a pipe-separated endoscope apparatus that reduces the number of parts of a disposable member and is easy to handle.

In order to achieve the above object, a separate-type endoscope apparatus according to the present invention includes an endoscope main body in which various types of pipes are disposed, and an operation portion of the main body by a first connecting portion. A conduit unit that is detachably attached and has a conduit connected to the main body side conduit, and an electromagnetic valve unit that is connected to the conduit unit by a second connecting portion and opens and closes the conduit. A pipe-separated type endoscope, wherein at least one of the first and second connecting parts of the pipe unit is formed of an elastic body, and the pipes are integrally formed in the elastic body connecting part. In addition, a forceps port is arranged in the suction conduit that is also used as the treatment instrument insertion channel in the conduit unit and is branched from the suction conduit.
The invention according to claim 2 is characterized in that a forceps port branched and arranged from the suction line of the conduit unit and a cap for the forceps port are formed integrally with the first connecting portion.
The invention described in claim 3 is characterized in that a slit for allowing a treatment tool to be inserted is formed in the cap for the forceps opening.

  According to the configuration of the present invention, the pipe unit is detachable from the operation unit, and the pipe on the main body side is shortened by the length of the pipe unit, so that cleaning using the cleaning brush is facilitated. On the other hand, the pipe unit becomes disposable, and cleaning of the pipe unit becomes unnecessary.

  According to the present invention, it can be used as a disposable pipe unit, and the washing and sterilization of this pipe unit can be omitted. In addition, a series of conduits in the endoscope is shorter than the conventional one, and it is easy to perform cleaning using a cleaning brush. In addition, the forceps port is formed integrally with the first connecting portion, and further, the cap is formed integrally, and the cap is formed with a slit into which the treatment instrument can be inserted, so that the number of parts of the disposable conduit unit is reduced. In addition, there is an effect that handling becomes easy.

  FIG. 1 to FIG. 4 show the configuration of a pipe-separated endoscope apparatus according to the first example of the embodiment. First, FIG. 1 (the characteristic part is enlarged and drawn in a state that is easy to grasp). The overall configuration will be described. In the figure, an electronic endoscope 10 has a distal end portion 10A having a CCD as an imaging device, an insertion portion 10B, an operation portion 10C, and a cable 10D. A connector 11 of the cable 10D is connected to a light source device 12, and this A signal cable 13 branched from the connector 11 is connected to a processor (image processing) device 14.

  That is, the cable 10D includes a light guide 15 disposed from the distal end portion to the operation unit 10C and a signal line 16 for performing drive control of the CCD and reading of an image signal. It connects to the light source device 12 and serves to connect the signal line 16 to the processor device 14.

  The operation unit 10C is provided with a suction button 17A which is an electrical switch, an air / water feed button (two-stage switch) 17B, and a hard copy button 17C, and further for sucking the contents in the observed body. A suction pipe 19A, a water supply pipe 20A, and an air supply pipe 21A are arranged. As shown in FIG. 2A, a flange-like annular convex portion F is provided at the connecting portion at the end of these pipes 19A, 20A, 21A.

  The disposable pipe unit 23 is detachably coupled to the operation unit (main body side) 10C as described above. That is, the pipe line unit 23 includes an operation unit side support unit and a cable unit, and the whole is formed of an elastic body such as an elastic rubber. Then, the suction pipe 19B, the water supply pipe 20B, and the air supply pipe 21B to be connected to the pipes 19A, 20A, and 21A are integrally formed therein, and the conduit arrangement state inside the cable portion is shown in FIG. 3, for example. (There are various types and arrangements of these pipes). Further, as shown in FIG. 2A, an annular fitting groove G is formed in the annular convex portion F in the first connecting portion (tip-end-side connecting portion) of the conduit unit 23. The fitting groove G is fitted into the annular convex portion F by elastic deformation (distortion) of the unit itself.

  Further, in the first example, a forceps port 24A is provided by branching to the suction tube 19B, and a metal tube 24 is insert-molded with respect to a part of the suction tube 19B and the forceps port 24A as illustrated. That is, the suction pipes 19A and 19B are also used as a treatment instrument insertion channel. In this case, the forceps port 24A is used as an introduction port for the treatment tool. Therefore, the metal tube 24 is formed from the forceps port 24A to the suction tube (metal tube) 19A on the operation unit 10C side. A rubber cap 25 is attached to the forceps port 24A when not in use.

  And as FIG. 1 shows, the rear-end side of the said pipe line unit 23 is connected to the solenoid valve unit 26 by the 2nd connection part. As shown in FIG. 2B, the second connecting portion of the conduit unit 23 is simply formed with the tubes 20B and 21B (19B), and one of the solenoid valve units 26 has a protruding tube. 20C and 21C (19C is not shown) are formed. Therefore, the connection of the second connecting portion of the conduit unit 26 is completed simply by elastically deforming the tubes 20B, 21B and the like and fitting them into the protruding tubes 20C, 21C. The electromagnetic valve unit 26 includes a tank unit 27 and is connected to the processor device 14 via a signal line.

  FIG. 4 shows the configuration of the electromagnetic valve unit 26. The electromagnetic valve unit 26 includes an electromagnetic valve section 28 for opening and closing each of the suction pipe 19C, the water supply pipe 20C, and the air supply pipe 21C with an electromagnetic valve. , A driving pump 29, and a control circuit 30 for inputting the switch signal of the suction button 17A of the operation unit 10C and controlling the electromagnetic valve unit 28 and the like. As the tank portion 27, a suction tank 27A and an air / water supply tank 27B are arranged.

  The first example is configured as described above. As shown in FIG. 1, the pipe unit 23 includes the fitting grooves G of the pipes 19 </ b> B to 21 </ b> B of the first connecting part. By fitting and connecting to the annular convex portion F of the pipe lines 19A to 21A, the pipe is connected to the operation portion 10C. The second connecting portion is also connected to the solenoid valve unit 26 by fitting and connecting the pipes 19B to 21B to the pipes 19C to 21C on the solenoid valve unit 26 side.

  In this state, when the first stage of the air / water supply button 17B of the operation unit 10C is pressed, the pump 29 is operated by the control circuit 30 of FIG. 4, and the electromagnetic valve of the water supply pipe 20C is opened by the electromagnetic valve unit 28. Then, water is supplied to the tip portion 10A (water in the tank 27B) through the water supply pipes 20B and 20A. Similarly, air can be supplied via the air supply tubes 21C, 21B, and 21A by pressing the second stage of the air / water supply button 17B. When the suction button 17A is pressed, the suction pipes 19C, 19B, 19A are opened by the electromagnetic valve portion 28, and when suction from the distal end portion 10A is performed, the contents in the observed body are collected into the tank 27A. The

  And if use of an endoscope is complete | finished, the said pipe line unit 23 can be removed from the operation part 10C and the solenoid valve unit 26, and can be discarded. Therefore, the pipe unit 23 need not be cleaned, and only the main body side needs to be cleaned and sterilized. In this case, as compared with the conventional case (FIG. 7), the length of the entire conduit is shortened on the main body side, so that cleaning using a brush becomes possible and cleaning becomes easy.

  FIG. 5 shows a configuration of a second example of the embodiment, and this second example can reliably prevent the reuse of the pipe unit once used. That is, FIG. 5A shows the suction pipe 19B of the pipe unit 32 of the second example, and a tapered surface 100 is formed on the front side wall surface of the annular fitting groove G of the suction pipe 19B. The surface 100 has a conical side surface shape whose diameter increases toward the front surface, so that the annular protrusion F can be easily inserted. In addition, a small groove H is provided around the inlet of the suction pipe 19B in an annular shape or an arc shape (part), so that the front wall is torn when removed.

  According to such a second example, as shown in FIG. 5B, the front surface of the fitting groove G is removed by the annular convex portion F of the suction tube 19A on the operation portion 10C side when the conduit unit 32 is removed. The wall will be torn. Therefore, even if the pipe unit 32 is to be mounted on the operation unit 10C again, it cannot be attached and fixed effectively, and the pipe unit 32 is prevented from being reused by mistake.

  FIG. 6 shows the configuration of the third example of the embodiment. As shown in FIG. 6A, the pipe unit 34 of the third example is not provided with the metal tube 24, and at least the upper part is a relatively hard elastic member (elastic rubber material or synthetic resin material). The forceps port 35 and its cap 36 are integrally formed. As shown in FIG. 6B, the cap 36 is provided with a slit (cut) 37 that allows the treatment tool to be inserted while the forceps opening 35 is closed.

  According to the third example, the connection is made in the same manner as in the first example. When an endoscopic treatment is performed, a treatment instrument is inserted through the slit 37 of the forceps opening 35 (cap 36). The treatment instrument is guided to the distal end portion 10A using the suction tubes 19B and 19A as the treatment instrument insertion channel. On the other hand, when the treatment instrument is removed from the slit 37, the forceps port 35 is closed by the slit 37 of the cap 36, and suction from the distal end portion 10A can be performed using the suction tubes 19B and 19A.

  The structure of the 1st connection part used in the pipe line units 23, 32, and 34 of the said example is employable as a structure of a 2nd connection part.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partial cross-sectional view showing an entire pipe line separation type endoscope apparatus according to a first example of an embodiment of the present invention. The structure of the connection part in the apparatus of FIG. 1 is shown, FIG. (A) is sectional drawing of a 1st connection part (support part), and FIG. (B) is sectional drawing of a rear-end side connection part. It is a figure which shows the cross section of the cable part in the conduit unit of FIG. It is a figure which shows the structure of the solenoid valve unit of FIG. The structure of the pipe line unit connection part in the 2nd example of embodiment of this invention is shown, A figure (A) is a state figure before attachment, and a figure (B) is a state figure after removal. The structure of the 3rd example of embodiment of this invention is shown, A figure (A) is a block diagram of the support part of a conduit unit, and a figure (B) is a figure of the forceps mouth of a figure (A). It is a figure which shows the whole structure of the conventional endoscope.

Explanation of symbols

10 ... Electronic endoscope,
10C: Operation unit (main body side),
19A, 19B, 19C ... suction tube,
20A, 20B, 20C ... water pipe,
21A, 21B, 21C ... air pipe,
23, 32, 34 ... pipeline unit,
24A, 35 ... forceps opening,
26 ... Solenoid valve unit,
37 ... slit,
F ... annular convex part,
G: An annular fitting groove.

Claims (3)

An endoscope body in which various pipes are arranged;
A conduit unit that is detachably attached to the operation portion of the main body by a first connecting portion and has a conduit connected to the main body-side conduit,
A pipe-separated endoscope having an electromagnetic valve unit that is connected to the pipe unit by a second connecting portion and that opens and closes the pipe,
At least one of the first or second connecting portion of the pipe unit is formed of an elastic body, and the pipes are integrally formed with the elastic body connecting portion.
A duct-separated endoscope apparatus, characterized in that a forceps port is arranged to be branched from a suction duct in a suction duct that is also used as a treatment instrument insertion channel in the duct unit.   2. The duct-separated type endoscope according to claim 1, wherein a forceps port branched and arranged from the suction line of the duct unit and a cap for the forceps port are formed integrally with the first connecting portion. Mirror device.   3. The duct-separated endoscope apparatus according to claim 2, wherein a slit for allowing a treatment tool to be inserted is formed in the forceps port cap.

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