JP2013106711A - Fluid conduit connection structure of endoscope and endoscope system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To connect a plurality of fluid conduits simultaneously, and to cope with an external equipment failure.SOLUTION: On a connector 15 for a light source on an endoscope side, a connection part body 56 is formed. On the connection part body 56, first and second connector side connection ports 57 and 58 are formed. The second connector side connection port 58 is formed in a female lure tapered shape, and the first connector side connection port 57 is formed into a non-tapered through-hole. A connector 70 on an external equipment side includes a connector body 72 and fluid conduits 73 and 74. The fluid conduit 74 has a male tapered projection part 74a formed in a male lure tapered shape and is fitted with the second connector side connection port 58. The fluid conduit 73 has a non-tapered cylindrical projection part 73a and is inserted into the first connector side connection port 57.

Description

  The present invention relates to an endoscope fluid line connection structure and an endoscope system that are connected to an endoscope and an external device that controls fluid supply and suction.

  2. Description of the Related Art Conventionally, an endoscope is generally provided with a fluid conduit for transferring a fluid. As this fluid conduit, for example, a water supply conduit for supplying cleaning water for cleaning the observation window at the tip, and an air supply conduit for supplying air for blowing off the liquid adhering to the observation window are provided. It has been. Furthermore, an endoscope with a balloon includes a fluid conduit for supplying and sucking fluid to a balloon that is inflated and deflated from a control device that controls fluid supply and suction. Some endoscopes are provided with a water jet conduit for injecting liquid into the lumen of the subject.

  As described above, the endoscope is provided with various fluid conduits, and when the endoscope is used, it must be connected to an external device. For example, the air / water supply conduit is connected to the air / water supply device, and the fluid conduit for the balloon is connected to the balloon control device. Further, when cleaning the endoscope, various fluid conduits and a cleaning device are connected.

  As described in Patent Document 1, in an endoscope that connects a fluid conduit provided in an endoscope and an external device, a connection port that communicates with the fluid conduit is formed in a female luer taper shape. It is common to have. By adopting a common female luer taper shape, even when an external device breaks down, a commercially available syringe (syringe) or the like can be connected to the connection port and fluid can be supplied and sucked into the fluid conduit.

  On the other hand, when the endoscope includes a plurality of fluid conduits, it is troublesome to connect the fluid conduits on the external device side and the fluid conduits on the endoscope side one by one. Therefore, in Patent Document 2, a plurality of connection ports communicating with the fluid pipes are gathered in one place, and these connection ports can be connected to an external device with one dedicated adapter. Thereby, a plurality of fluid pipe lines and an external device can be connected at a time. Further, since the dedicated adapter is used, it is not possible to connect to another connection port provided in the endoscope, and it is possible to prevent a connection error.

Special table 2007-521870 JP-A-6-343605

  However, in the endoscope described in Patent Document 2, the endoscope side connection port communicating with the fluid conduit is considered to be connected to a dedicated adapter, and is not connected to a syringe or the like. It is not considered, and the connection port is not a tapered shape. This makes it impossible to respond by connecting a syringe or the like to the connection port in an emergency such as a failure of an external device.

  The present invention has been made in view of the above problems, and can connect a plurality of fluid conduits at once, and can also cope with a failure of an external device. And an endoscope system.

  The endoscope fluid pipe connection structure according to the present invention includes a plurality of endoscope side fluid pipes for transferring a fluid, and a plurality of external device side fluids provided in an external device. In an endoscope connection structure for connecting a pipe line, an external device side connector in which a plurality of external device side connection portions communicating with the external device side fluid pipe line are formed, and the endoscope side fluid pipe line, An endoscope-side connector formed with a plurality of communicating endoscope-side connection portions, and at least one of the endoscope-side connection portions has a tapered shape that fits with the external device-side connection portion. It is characterized by being.

  At least one of the endoscope side connection portions is preferably a female taper opening having a female taper shape.

  At least one of the external device side connection structures is a male taper protrusion having a male taper shape and a hollow center part, and the female taper opening is fitted with the male taper protrusion. Is preferred.

  In the endoscope side connector, it is preferable that a plurality of female taper openings having different female taper-shaped gradients or different maximum opening areas are formed as the endoscope side connection portion.

  The endoscope-side connector has a through hole without a taper as at least one of the endoscope-side connection portions, and the external device-side connector has a non-tapered cylinder as the external device-side connection portion. When the endoscope-side connector and the external device-side connector are coupled, it is preferable that the cylindrical protrusion is inserted into the through hole.

  A packing member attached to an outer peripheral surface of the cylindrical protruding portion or an inner peripheral surface of the through-hole, and the packing member has a cylindrical shape when the cylindrical protruding portion is inserted into the through-hole; It is preferable that the male taper protrusion and the female taper opening are connected in a liquid-tight or air-tight manner by press-contacting the shape protrusion and the through hole.

  A packing member having elasticity is provided at a position surrounding the male taper protrusion, and the packing member has a case of the external device side connector when the male taper protrusion is fitted into the female taper opening, It is preferable that the male taper protruding portion and the female taper opening be connected in a liquid-tight or air-tight manner by press-contacting to the case of the endoscope side connector.

  The external device side connector includes a plurality of male taper protrusions having different gradients or axial lengths, and the male taper protrusions are located along the axial direction with respect to the case of the external device side connector. The packing member is disposed between the case of the external device side connector and the male taper protrusion, and the female taper opening and the male taper protrusion are engaged with each other. It is preferable that the packing member absorbs a difference in position in the axial direction between the plurality of male taper protrusions. Moreover, it is preferable that the said male taper protrusion part is integrally formed with the said packing member. Furthermore, it is preferable that at least one of the female taper openings has a female luer taper shape.

  An endoscope system according to the present invention includes an imaging unit that images a lumen, an endoscope provided with a plurality of endoscope side fluid conduits, and an external provided with a plurality of external device side fluid conduits A device and the fluid conduit connection structure according to any one of claims 1 to 10, wherein the plurality of endoscope-side fluid conduits and the plurality of external device-side fluid conduits are connected to each other. An endoscope-side connector and the external device-side connector are provided.

  According to the present invention, at least one of the plurality of endoscope-side connection portions communicating with the endoscope-side fluid conduit for transferring fluid has a tapered shape that fits with the external device-side connection portion. A plurality of fluid conduits can be connected at once, and it is possible to cope with a failure of an external device.

It is an external appearance perspective view of an electronic endoscope system. It is a top view which shows the structure of the front-end | tip part of an endoscope. It is explanatory drawing which shows schematically the structure of the fluid pipe line in an endoscope. It is a perspective view which shows the structure of the adapter for connection. It is a perspective view which shows the structure of the endoscope side connector and buttock apparatus side connector to which 1st Embodiment is applied. It is principal part sectional drawing which shows the structure of the endoscope side connector and buttock apparatus side connector to which 1st Embodiment is applied. It is principal part sectional drawing which shows the structure of the endoscope side connector and buttock apparatus side connector which applied 2nd Embodiment. It is principal part sectional drawing which shows the structure of the endoscope side connector and buttock apparatus side connector to which 3rd Embodiment is applied. It is a perspective view which shows the structure of the endoscope side connector and buttock apparatus side connector which applied 4th Embodiment. It is a perspective view which shows the structure of the endoscope side connector and buttock apparatus side connector which applied 5th Embodiment. It is principal part sectional drawing which shows the structure of the endoscope side connector and buttock apparatus side connector which applied 5th Embodiment.

  In FIG. 1, an endoscope system 2 includes a double-balloon endoscope including an electronic endoscope 10 with a balloon and an overtube 11 with a balloon. The electronic endoscope 10 is connected to an insertion portion 12 to be inserted into a lumen (for example, the large intestine) of a subject and a proximal end side of the insertion portion 12, and an operator such as a doctor or an engineer performs an operation. And an operation unit 13 for the purpose. A universal cord 14 is connected to the operation unit 13, and a light source connector 15 is provided at the tip of the universal cord 14. A cable 16 is branched from the light source connector 15, and a processor connector 17 is provided at the end of the cable 16. The light source connector 15 and the processor connector 17 are detachably connected to the light source device 18 and the processor device 19, respectively.

  The operation unit 13 is provided with an angle knob 20, an air / water supply button 21 for ejecting air and water from the distal end of the insertion unit 12, a suction button 22, and the like. A forceps port 23 through which a treatment instrument such as an electric knife is inserted is provided on the insertion portion 12 side of the operation portion 13.

  The insertion portion 12 is provided at the distal end thereof, and includes a distal end portion 24 in which an imaging element for in-subject imaging is incorporated, a bendable bending portion 25 connected to the proximal end of the distal end portion 24, and a bending portion. 25 and a flexible portion 26 having flexibility, which is connected to the base end of 25. The overtube 11 can be detachably attached to the insertion portion 12. The flexible portion 26 has a length of several meters in order to allow the distal end portion 24 to reach a target position in the body. The bending portion 25 bends in the vertical and horizontal directions in conjunction with the operation of the angle knob 20 of the operation unit 13. Thereby, the front-end | tip part 24 can be orient | assigned to the desired direction in a body.

  In FIG. 2, the distal end surface 30 of the distal end portion 24 is provided with an observation window 31, an illumination window 32, an air / water supply nozzle 33, and a forceps outlet 34. The observation window 31 is disposed at the center on one side of the distal end surface 30. Two illumination windows 32 are arranged at symmetrical positions with respect to the observation window 31.

  In the back of the observation window 31, an objective optical system for capturing an image of the site to be observed in the body, and an imaging element such as a CCD or a CMOS image sensor for capturing an image of the site to be observed are provided. The image pickup device is connected to the processor device 19 through a signal cable that is inserted through the insertion portion 12, the operation portion 13, and the universal cord 14 and extends to the processor connector 17. The image of the observed portion taken in from the observation window 31 is formed on the light receiving surface of the image sensor and converted into an image signal. The processor device 19 performs various kinds of image processing on the image signal from the image sensor received via the signal cable to convert it into a video signal, and displays it as an observation image on the cable-connected monitor 35 (see FIG. 1). .

  Behind the illumination window 32, an exit end of a light guide for guiding illumination light from an irradiation light source of the light source device 18 is disposed. The light guide is inserted into the insertion portion 12, the operation portion 13, and the universal cord 14 and extends to the light source connector 15, and an incident end is disposed in the light source connector 15. Illumination light guided by the light guide is irradiated toward an observation site in the body through the illumination window 32.

  The air / water supply nozzle 33 injects air and water supplied from the air / water supply device built in the light source device 18 toward the observation window 31 according to the operation of the air / water supply button 21. The forceps outlet 34 is connected to a forceps channel (not shown) disposed in the insertion portion 12 and communicates with the forceps port 23. The distal end of the treatment instrument inserted through the forceps opening 23 is exposed from the forceps outlet 34.

  The overtube 11 includes a gripping part 40, a body part 41, and a first balloon 42 that are held by an operator. The holding part 40 is a cylindrical body made of a hard material such as plastic. The main body portion 41 is formed in a substantially cylindrical shape by a flexible material such as polyurethane, and is fitted and fixed to the distal end side of the grip portion 40.

  As shown in FIG. 3, an insertion conduit 44 and an overtube-side fluid conduit 45 are formed in the body portion 41 of the overtube 11 over the axial direction thereof. The insertion conduit 44 is a hole through which the insertion portion 12 of the electronic endoscope 10 is inserted, and has an inner diameter slightly larger than the outer diameter of the insertion portion 12. The inner peripheral surface of the insertion duct 44 is coated with a hydrophilic coating material (lubricating coating material) such as polyvinylpyrrolidone, for example.

  When the overtube 11 is used, a lubricant such as water is supplied to the inner peripheral surface of the insertion conduit 44 (the gap between the insertion portion 12 and the main body portion 41), and friction between the insertion portion 12 and the main body portion 41 is reduced. . The lubricant is injected from the connector 47 shown in FIG. 1 with a syringe or the like (not shown). The connector 47 is connected to a small-diameter tube 48, and the distal end of the tube 48 is connected to the proximal end of the insertion conduit 44. The lubricant injected from the connector 47 is supplied to the inner peripheral surface of the insertion conduit 44 through the tube 48.

  The main body 41 is manufactured, for example, by processing a multi-lumen tube having a constant cross-sectional shape. A taper 49 for constricting the inner diameter is formed at the tip of the main body 41 (see also FIG. 1). By providing the taper 49, when the insertion portion 12 of the electronic endoscope 10 is inserted through the insertion passage 44, the gap between the insertion portion 12 and the distal end of the main body portion 41 becomes narrower, and the distal end of the main body portion 41 is reduced. Leakage of lubricant to the side is prevented. The taper 49 may be provided on the entire circumference of the tip of the main body 41 or may be formed by constricting a part thereof.

  A first balloon 42 is attached to the outer peripheral surface of the distal end portion of the main body 41. The first balloon 42 is formed in a substantially cylindrical shape whose end is narrowed by an elastic material such as rubber, and has a distal end portion and a proximal end portion having a small diameter, and a central bulging portion. The first balloon 42 is put on the outer peripheral surface of the distal end of the main body 41, and is fixed to the main body 41 by, for example, winding a thread around the distal end and the base end and applying an adhesive thereon. .

  The overtube-side fluid conduit 45 is a conduit for supplying and sucking fluid (for example, air) to the first balloon 42, and is provided in the tube wall of the insertion conduit 44. The overtube side fluid conduit 45 is closed at the distal end side of the first balloon 42 at the fixed position. Further, the overtube-side fluid conduit 45 is communicated with a balloon opening 50 formed on the outer peripheral surface of the main body 41. The opening 50 is formed at the mounting position of the first balloon 42, and the first balloon 42 is inflated and deflated by supplying and sucking fluid from the opening 50. A tube 51 is connected to the base end of the overtube-side fluid conduit 45, and a connector 52 is connected to the base end of the tube 51.

  As shown in FIG. 4, the connector 52 is made of, for example, plastic. On the inner surface of the connector 52, an overtube side connection port 52a to which a syringe and an adapter 53 described later can be detachably connected is formed. The overtube side connection port 52a has a female luer taper shape. Thereby, even when the balloon control device 62 breaks down, the first balloon 42 can be inflated and deflated by connecting a syringe or the like to the overtube side connection port 52a. A locked opening 52 b is formed on the outer peripheral surface of the connector 52.

  The electronic endoscope 10 includes a first fluid conduit 54 that is disposed inside the operation unit 13, the cord 14, and the light source connector 15 and that supplies and sucks fluid to and from the first balloon 42. . The first fluid conduit 54 is composed of a flexible tube. A cap 55 is provided near the distal end of the operation unit 13 of the electronic endoscope 10. The base part 55 is made of, for example, plastic or metal, and is formed integrally with the case constituting the operation part 13. The base portion 55 has a substantially cylindrical outer shape, and an operation portion side connection port 55a for connecting to the overtube side fluid conduit 45 is formed at the center position. The operation unit side connection port 55a has a female luer taper shape. In addition, a locked opening 55 b is formed on the outer peripheral surface of the base 55.

  The connection adapter 53 is made of, for example, plastic, and both end portions 53a and 53b are male luer taper shapes and the center is hollow. As a result, both end portions 53a and 53b of the connection adapter 53 are fitted into the overtube side connection port 52a of the connector 52 and the operation unit side connection port 55a of the base portion 55, respectively, and the overtube side fluid conduit 45 is fitted. And the first fluid conduit 54 can be communicated with each other via the connection adapter 53.

  Further, the connection adapter 53 includes locking claws 53 c and 53 d for locking the locked opening 52 b of the connector 52 and the locked opening 55 b of the base 55. When both end portions 53a and 53b of the connection adapter 53 are fitted into the connection port 52a and the connection port 55a, the locking claws 53c and 53d lock the locked opening 52b and the locked opening 55b. Thereby, the connection adapter 53 is prevented from being detached from the connector 52 and the base part 55.

  As shown in FIG. 5, the light source connector 15 is provided with a convex connection portion main body 56 protruding from a flat surface. The connection portion main body 56 is made of, for example, plastic, and is formed integrally with a case constituting the light source connector 15. The first and second connector side connection ports 57 and 58 (endoscope side connection portions) are formed in one connection portion main body 56. The first and second connector side connection ports 57 and 58 are arranged at a predetermined distance from each other. Of the first and second connector side connection ports 57, 58, one second connector side connection port 58 is formed in a female luer taper shape, and the other first connector side connection port 57 is tapered. There are no through holes. One end of the first fluid conduit 54 communicates with the operation unit side connection port 55 a and the other end communicates with the first connector side connection port 57. The outer peripheral surface of the connection portion main body 56 is formed in a substantially elliptical shape surrounding the connector side connection ports 57 and 58. A flange portion 56 a that protrudes from the outer peripheral surface is formed on the distal end side of the connection portion main body 56.

  A second balloon 59 is detachably attached to the distal end portion 24 of the insertion portion 12. Similar to the first balloon 42, the second balloon 59 is formed in a substantially cylindrical shape whose end is squeezed by an elastic material such as rubber, and has a distal end portion and a proximal end portion having a small diameter, and a central bulge. And an exit. The second balloon 59 is inserted into the distal end portion 24 and disposed at a predetermined position of the distal end portion 24, and then, for example, a rubber ring is fitted into the distal end portion and the proximal end portion to thereby insert the distal end portion 24. Fixed to.

  The electronic endoscope 10 is arranged in the insertion portion 12, the operation portion 13, the universal cord 14, and the light source connector 15, and a second fluid conduit for supplying and sucking fluid to the second balloon 59 60 is provided. The second fluid conduit 60 is composed of a flexible tube, and the distal end side thereof is closed at the fixed position of the distal end portion of the second balloon 59. One end of the second fluid conduit 60 communicates with a balloon opening 61 formed on the outer peripheral surface of the distal end portion 24. The opening 61 is formed at the mounting position of the second balloon 59, and the second balloon 59 is inflated and deflated by supplying and sucking fluid from the opening 61. The other end of the second fluid conduit 60 communicates with the second connector side connection port 58. The second fluid line 60 is connected to the balloon controller 62 together with the first fluid line 54.

  The balloon control device 62 separately supplies fluid (for example, air) to each of the balloons 42 and 59 in order to inflate alternately the first balloon 42 on the overtube side and the second balloon 59 on the electronic endoscope 10 side. ) And an apparatus main body 63 provided with a pump, a sequencer, and the like, a hand switch 64 for remote control, and a balloon dedicated monitor 65.

  The balloon control device 62 supplies fluid to the balloons 42 and 59 to inflate them, or controls the fluid pressure to a constant value to hold the balloons 42 and 59 in an inflated state. The balloon control device 62 sucks fluid from the balloons 42 and 59 and contracts them, or controls the fluid pressure to a constant value to hold the balloons 42 and 59 in a contracted state.

  When the balloons 42 and 59 are inflated and deflated, the balloon dedicated monitor 65 displays the pressure values and the inflated and deflated states of the balloons 42 and 59. The pressure values and the inflated / deflated states of the balloons 42 and 59 may be superimposed on the observation image of the electronic endoscope 10 and displayed on the monitor 35.

  The front panel of the main body 63 of the balloon control device 62 is provided with a power switch, a stop switch operated when an abnormality occurs, a pressure display unit (not shown) for the balloons 42 and 59, and the like. The pressure display unit is a panel that displays the pressure values of the balloons 42 and 59, and an error code is displayed on the pressure display unit when an abnormality such as a breakage of the balloons 42 and 59 occurs.

  Further, fluid supply / suction tubes 68 and 69 to the balloons 42 and 59 are attached to the front panel of the apparatus main body 63. A connection portion between each tube 68 and 69 and the balloon control device 62 is provided with a backflow prevention unit (not shown). The backflow prevention unit is detachably attached to the front panel of the apparatus main body 63. The backflow prevention unit is configured by incorporating a filter for gas-liquid separation inside a hollow disk-like case that is detachably attached to the front panel of the balloon control device 62. When the balloons 42 and 59 are torn, A liquid such as a body fluid is prevented from flowing into the balloon control device 62.

  One connector 70 is provided at the distal ends of the tubes 68 and 69. By connecting the connector 70 to the light source connector 15 of the electronic endoscope 10, the tube 68 and the first fluid conduit 54 of the electronic endoscope 10 are connected, and the tube 69 and the electronic endoscope 10 are connected. The second fluid conduit 60 can be connected.

  On the other hand, the hand switch 64 is provided with various switches. For example, a stop switch similar to the stop switch provided on the apparatus main body 63 side, an endoscope ON / OFF switch that instructs pressurization / decompression of the balloon 42 on the endoscope side, and a second switch on the overtube side An overtube ON / OFF switch for instructing pressurization / depressurization of the balloon 59 is provided, and this hand switch 64 is electrically connected to the apparatus main body 63 via a cord 71.

  As shown in FIG. 5, the connector 70 is made of, for example, plastic or the like, and includes a connector main body 72 and fluid pipes 73 and 74 (external device side connection portions). The connector main body 72 has a cylindrical shape in which a distal end side facing the connection portion main body 56 of the light source connector 15 is opened and a proximal end side is closed, and an elliptical shape in which a cross-sectional shape orthogonal to the axial direction connects two semicircles. It has a sectional shape.

  The fluid pipes 73 and 74 are arranged inside the connector main body 72 and along the axial direction, and a part of the distal end side protrudes from the open side of the connector main body 72. When the outer peripheral surface of the connection portion main body 56 of the light source connector 15 is fitted to the inner peripheral surface of the connector main body 72, the fluid pipes 73 and 74 are positioned at the positions of the first and second connector side connection ports 57 and 58. It is arranged together. Tubes 68 and 69 are connected to the base end sides of the fluid pipes 73 and 74.

  One of the fluid pipes 74 has a male taper protrusion 74a (external device side connection part) formed at the distal end side that is hollow at the center and has a male luer taper shape. The connector side connection port 58 can be fitted. Since the male taper protrusion 74a having a male luer taper shape and the second connector side connection port 58 having a female luer taper shape are fitted, the gap between the male taper protrusion 74a and the second connector side connection port 58 is established. It can be connected in a liquid-tight or air-tight manner.

  Further, the fluid pipe 73 has a cylindrical protrusion 73 a (external device side connection portion) without a taper formed on the tip side, and is inserted into the first connector side connection port 57. An O-ring 75 as a packing member is provided on the outer peripheral surface of the cylindrical protrusion 73a. The O-ring 75 is formed in a ring shape from an elastic material such as rubber, and is fitted and attached to a groove 73b formed on the outer peripheral surface of the cylindrical protrusion 73a. The outer diameter of the O-ring 75 when the O-ring 75 is fitted to the fluid pipe 73 is formed to be slightly larger than the outer diameter of the first connector side connection port 57. Thereby, when the fluid pipe 73 is inserted into the first connector side connection port 57, the O-ring 75 is deformed and is brought into close contact with the first connector side connection port 57. In this manner, the O-ring 75 is pressed against the cylindrical protrusion 73a and the connector-side connection port 57, so that the liquid-tight or air-tightness is maintained between the cylindrical protrusion 73a and the first connector-side connection port 57. Can be connected.

  Further, a locking claw 72a for locking the flange portion 56a of the connection portion main body 56 is formed on the inner peripheral surface of the connector main body 72, and the connection portion main body of the light source connector 15 is formed on the inner peripheral surface of the connector main body 72. When the outer peripheral surface of 56 is fitted, the locking claw 72 a locks the flange portion 56 a and prevents the connector main body 52 from being detached from the connection portion main body 56.

  The tube 68 and the first fluid are fitted by fitting the connector main body 72 and the connecting portion main body 56 and fitting the male luer tapered fluid pipe 74 and the female luer tapered second connector side connection port 58. The pipe 54 can be connected, and the tube 69 and the second fluid pipe 60 can be connected.

  By connecting the connector 70 and the light source connector 15 and connecting the overtube-side fluid conduit 45 and the first fluid conduit 54 via the connection adapter 53, the first and first fluid control devices are connected from the balloon control device 62. The fluid can be supplied and sucked to the second balloons 42 and 59.

  The operation of the above configuration will be described. When using the electronic endoscope 10, the overtube 11 is attached to the insertion portion 12, and both end portions 53 a and 53 b of the adapter 53 are connected to the overtube side connection port 52 a of the connector 52 and the operation unit side connection port 55 a of the base portion 55. And the connector 70 of the balloon control device 62 is connected to the light source connector 15. The light source connector 15 and the processor connector 17 are connected to the light source device 18 and the processor device 19.

  The surgeon inserts the insertion portion 12 and the overtube 11 of the electronic endoscope 10 alternately into the body by a push method, and operates the hand switch 64 of the balloon control device 62 as necessary to operate the first balloon. 42 is inflated and the second balloon 59 is deflated to fix the overtube 11 in the lumen of the subject, and the insertion portion 12 is further inserted deeper. Alternatively, the first balloon 42 is deflated and the second balloon 59 is inflated to fix the insertion portion 12 in the lumen of the subject, and the overtube 11 is further inserted deeper. In this manner, the insertion portion 12 can be inserted into a deep portion in the lumen to perform observation.

  As described above, the tube 68 and the first fluid conduit 54, and the tube 69 and the second fluid conduit 60 are connected to each other only by connecting one connector 70 to the connection portion main body 56 of the light source connector 15. can do. Furthermore, when the balloon control device 62 breaks down, the second balloon 59 can be inflated and deflated by removing the connector 70 and connecting a syringe or the like to the second connector side connection port 58. It is possible to easily cope with the failure of the balloon control device 62. Further, since the connector side connection ports 57 and 58 formed in the light source connector 15 are formed in a female luer taper shape and the other is a through hole without a taper, the connection between the light source connector 15 and the connector 70 is made. Connection errors can be prevented.

  In the first embodiment, one of the connector side connection ports 57 and 58 formed in the endoscope side light source connector 15 is a female luer taper shape and the other is formed in a through hole without a taper. The present invention is not limited to this, and as in the second embodiment shown in FIG. 7, both of the connector side connection ports 81 and 82 formed in the light source connector 80 on the endoscope side have a female luer taper shape. It may be. In the present embodiment, configurations other than the light source connector of the electronic endoscope and the connector of the balloon control device are the same as those in the first embodiment, and a description thereof will be omitted.

  The first and second connector side connection ports 81 and 82 are formed in one connection portion main body 83. The connection portion main body 83 is made of, for example, plastic, and is formed integrally with a case constituting the light source connector 80. The first and second connector side connection ports 81 and 82 are arranged at a predetermined distance from each other. The first and second connector-side connection ports 81 and 82 are both formed in a female luer taper shape, but differ in the maximum opening area, that is, the opening area on the distal end surface of the connection portion main body 83.

  The other end of the first fluid conduit 54 communicates with the first connector side connection port 81, and the other end of the second fluid conduit 60 communicates with the second connector side connection port 82. Yes. The outer peripheral surface of the connection portion main body 83 is formed in a substantially elliptical shape surrounding the connector side connection ports 81 and 82. Further, a flange portion 83 a that protrudes from the outer peripheral surface is formed on the distal end side of the connection portion main body 83.

  The connector 85 coupled to the connection portion main body 83 has the same configuration as the connector 70 of the first embodiment, that is, the connector main body 72 and the fluid pipes 73 and 74, and is provided at the distal ends of the tubes 68 and 69. Yes. The connector 85 is formed from, for example, plastic. One of the fluid pipes 73 and 74 is formed with a male taper protrusion 74a having a male luer taper shape, and the other is formed with a cylindrical protrusion 73a having no taper.

  In the present embodiment, when the outer peripheral surface of the connection portion main body 83 of the light source connector 80 is fitted to the inner peripheral surface of the connector main body 72, the male tapered protrusion 74a and the second connector side connection port 82 are fitted. At the same time, the cylindrical protrusion 73 a passes through the first connector side connection port 81 and is inserted into the first fluid conduit 54. When the cylindrical protrusion 73 a is inserted into the first fluid conduit 54, the O-ring 75 is deformed and comes into close contact with the first fluid conduit 54. In this way, the O-ring 75 is pressed against the cylindrical protrusion 73a and the first fluid conduit 54, so that liquid tightness or airtightness is maintained between the cylindrical protrusion 73a and the first fluid conduit 54. Can be connected.

  As described above, the tube 68 and the first fluid conduit 54, and the tube 69 and the second fluid conduit 60 are connected to each other by simply connecting one connector 85 to the connection portion body 83 of the light source connector 80. can do. Furthermore, when the balloon control device 62 breaks down, the connector 85 is removed, and a syringe or the like is connected to the first and second connector side connection ports 81 and 82, so that the first balloon 42 and the second balloon 42 are connected. Since the balloon 59 can be inflated and deflated, it is possible to easily cope with a failure of the balloon control device 62. Further, since the first and second connector side connection ports 81 and 82 have different maximum opening areas, that is, opening areas at the distal end surface of the connection portion main body 83, the light source connector 80 and the balloon control device side connector 85 are different from each other. Connection errors can be prevented in the connection.

  In the first and second embodiments, one of the fluid pipes 73 and 74 provided in the balloon control device side connectors 70 and 85 is formed in a male luer taper shape, and the other is formed in a cylindrical shape without taper. However, the present invention is not limited to this, and both the fluid pipes 91 and 92 provided in the connector 90 on the balloon control device side are made cylindrical as in the third embodiment shown in FIG. Good. In addition, the connector 90 of this embodiment couple | bonds with the connection part main body 83 by which the 1st and 2nd connector side connection ports 81 and 82 similar to the said 2nd Embodiment were formed in the female luer taper shape.

  The connector 90 is made of, for example, plastic, and has a connector main body 93 and fluid pipes 91 and 92. The connector main body 93 is formed in the same shape as the connector main body 72 of the first embodiment. The fluid pipes 91 and 92 are arranged inside the connector main body 93 and along the axial direction, and a part of the distal end side protrudes from the open side of the connector main body 93. When the outer peripheral surface of the connection portion main body 83 of the light source connector 80 is fitted to the inner peripheral surface of the connector main body 93, the fluid pipes 91 and 92 are positioned at the positions of the first and second connector side connection ports 81 and 82. It is arranged together. Tubes 68 and 69 are connected to the proximal ends of the fluid pipes 91 and 92.

  The fluid pipes 91 and 92 are formed with cylindrical projecting portions 91a and 92a having no taper on the tip side. O-rings 75 as packing members are provided on the outer peripheral surfaces of the cylindrical protruding portions 91a and 92a. The O-ring 75 is formed in a ring shape from an elastic material such as rubber, and is fitted and attached to grooves 91b and 92b formed on the outer peripheral surfaces of the cylindrical protrusions 91a and 92a. In this embodiment, when the outer peripheral surface of the connection portion main body 83 of the light source connector 15 is fitted to the inner peripheral surface of the connector main body 93, the cylindrical protrusions 91 a and 92 a are the first connector side connection ports 81 and 82. And is inserted into the first and second fluid conduits 54, 60. When the cylindrical protrusions 91a and 92a are inserted into the first and second fluid pipes 54 and 60, the O-ring 75 is deformed and comes into close contact with the first and second fluid pipes 54 and 60. In this manner, the O-ring 75 is pressed against the cylindrical protrusions 91a and 92a and the first and second fluid conduits 54 and 60, so that the cylindrical protrusion 91a and the first fluid conduit 54 are in contact with each other. And the cylindrical protrusion 92a and the second fluid pipe line 60 can be connected in a liquid-tight or air-tight manner. Therefore, this embodiment can obtain the same effects as those of the first and second embodiments.

  In the first to third embodiments, when the tip of the fluid pipe provided in the connector 70, 85, 90 on the balloon control device side is formed in a cylindrical protrusion having no taper, Although an O-ring as a packing member is provided, the present invention is not limited to this, and a packing member is provided in the light source connector 100 on the endoscope side as in the fourth embodiment shown in FIG. Also good. The light source connector 100 is provided with a connecting portion main body 102. The first and second connector side connection ports 103 and 104 are formed in one connection portion main body 102. The connection portion main body 102 is made of, for example, plastic, and is formed integrally with a case constituting the light source connector 100. The first and second connector side connection ports 103 and 104 are both formed in a female luer taper shape. In addition, not only this but one connection port may be formed in the through-hole without a taper. Further, a flange portion 102 a protruding from the outer peripheral surface is formed on the distal end side of the connection portion main body 102.

  The first and second fluid conduits 105 and 106 communicate with the first and second connector side connection ports 103 and 104. The first and second fluid conduits 105 and 106 are the same as the conduit formed by the inner peripheral surface of the connecting portion main body 102 and the first and second fluid conduits 54 and 60 of the first embodiment. A pipe line composed of a flexible tube is continuously provided. An O-ring 101 as a packing member is provided on the inner peripheral surfaces of the first and second fluid conduits 105 and 106. The O-ring 101 is formed in a ring shape from an elastic material such as rubber, and is fitted and attached to grooves 105a and 106a formed on the inner peripheral surfaces of the first and second fluid conduits 105 and 106. .

  The connector 107 coupled to the connection portion main body 102 is made of, for example, plastic or the like, and includes a connector main body 108 and fluid pipes 109 and 110. The connector main body 108 is formed in the same shape as the connector main body 72 of the first embodiment. The fluid pipes 109 and 110 are arranged inside the connector main body 108 and along the axial direction, and a part of the distal end side protrudes from the open side of the connector main body 108. When the outer peripheral surface of the connection portion main body 83 of the light source connector 15 is fitted to the inner peripheral surface of the connector main body 108, the fluid pipes 109 and 110 are positioned at the positions of the first and second connector side connection ports 103 and 104. It is arranged together. Tubes 68 and 69 are connected to the proximal end sides of the fluid pipes 109 and 110.

  The fluid pipes 109 and 110 are formed with cylindrical protrusions 109a and 110a having no taper on the tip side. In the present embodiment, when the outer peripheral surface of the connecting portion main body 102 of the light source connector 100 is fitted to the inner peripheral surface of the connector main body 108, the cylindrical protrusions 109a and 110a are connected to the first and second connector side connection ports. 103 and 104 are inserted into the first and second fluid conduits 105 and 106. When the cylindrical protrusions 109 a and 110 a are inserted into the first and second fluid conduits 105 and 106, the O-ring 101 is deformed and comes into close contact with the first and second fluid conduits 105 and 106. In this way, the O-ring 101 is pressed against the cylindrical protrusions 109a and 110a and the first and second fluid conduits 105 and 106, so that the cylindrical protrusion 109a and the first fluid conduit 105 are in contact with each other. And the cylindrical protrusion 110a and the second fluid conduit 106 can be connected in a liquid-tight or air-tight manner. Therefore, this embodiment can obtain the same effects as those of the first to third embodiments.

  In the first to fourth embodiments, when the connecting portion provided on the connector on the balloon control device side is a cylindrical protruding portion, the packing member keeps liquid-tightness or air-tightness. The present invention is not limited to this, as in the fifth embodiment shown in FIGS. 10 and 11, even if a male tapered protrusion is used as the connection provided on the connector 120 on the balloon control device side, the packing member keeps liquid-tight or air-tight. It may be structured. In addition, the connector 120 of this embodiment couple | bonds with the connection part main body 83 by which the 1st and 2nd connector side connection ports 81 and 82 similar to the said 2nd Embodiment were formed in the female luer taper shape.

  The connector 120 includes a connector main body 121 and fluid pipes 122 and 123. The connector main body 121 is formed in the same shape as the connector main body 72 of the first embodiment. The fluid pipes 122 and 123 are arranged inside the connector main body 121 and along the axial direction, and a part of the distal end side protrudes from the open side of the connector main body 121. When the outer peripheral surface of the connection portion main body 83 of the light source connector 15 is fitted to the inner peripheral surface of the connector main body 93, the fluid pipes 122 and 123 are positioned at the positions of the first and second connector side connection ports 81 and 82. It is arranged together. Tubes 68 and 69 are connected to the base end sides of the fluid pipes 122 and 123.

  The fluid pipes 122 and 123 are separate from the connector main body 121, and male tapered protrusions 122a and 123a having a male luer taper shape are provided on the distal end side. The male tapered protrusions 122a and 123a are made of, for example, plastic, and are fitted into the recesses 121a and 121b provided in the connector main body 121 so that the male taper protrusions 122a and 123a can move by a predetermined amount along the axial direction with respect to the connector main body 121 It is attached.

  O-rings 124 and 125 as packing members are provided at positions surrounding the male taper protrusions 122a and 123a and between the connector main body 121 and the male taper protrusions 122a and 123a. The O-rings 124 and 125 are formed in a ring shape from an elastic material such as rubber, and are fitted and attached to the base end portions of the male taper protrusions 122a and 123a. In this embodiment, when the outer peripheral surface of the connection portion main body 83 of the light source connector 80 is fitted to the inner peripheral surface of the connector main body 121, the male taper protrusions 122 a and 123 a are connected to the first connector side connection ports 81 and 82. And the O-rings 124 and 125 are deformed and are brought into close contact with the front end surface of the connection portion main body 83. In this manner, the O-rings 124 and 125 are in pressure contact with the connector main body 121 and the connecting portion main body 83, so that the male taper protruding portion 123a and the first fluid conduit 54 are connected to each other. The two fluid pipes 60 can be connected in a liquid-tight or air-tight manner. Further, since the first and second connector side connection ports 81 and 82 have different maximum opening areas, there is a difference in the position of the male tapered protrusions 122a and 123a in the axial direction. Due to the deformation, the O-rings 124 and 125 can absorb the difference between the positions of the male tapered protrusions 122a and 123a in the axial direction.

  In the fifth embodiment, the male tapered protrusions 122a and 123a are made of plastic or the like, and the O-rings 124 and 125 are made of an elastic material such as rubber, but are provided separately. The male taper protrusion 122a and the O-ring 124, and the male taper protrusion 123a and the O-ring 125 may be integrally formed from an elastic material such as rubber.

  In each of the above embodiments, when the connector side connection portion and the external device side connection portion are tapered, the lure taper shape is formed. However, the present invention is not limited to this, and the taper has a gradient different from that of the luer taper. You may form in a shape. Moreover, in 2nd-5th embodiment, although the female Luer taper-shaped connection port from which a largest opening area differs is formed as a connector side connection part, this invention is not limited to this, A plurality of as connector side connection parts. When a female tapered connection port is provided, it may be formed in a female tapered connection port having a different gradient.

  In the electronic endoscope 10 of each of the embodiments described above, the first and second fluid conduits for supplying and sucking fluid to the first and second balloons 42 and 59 as fluid conduits for transferring fluid. 54, 60, 105, 106 are provided, and the connector side connection port communicating with them is taken as an example. However, the present invention is not limited to this, and liquid is ejected from the distal end of the insertion portion into the lumen of the subject. Water jet pipes, water feed pipes for feeding cleaning water for washing the observation window at the distal end of the insertion section, and air feed pipes for sending air that blows away liquid adhering to the observation window The present invention can also be applied to connection ports that communicate with the network.

  In the above-described embodiment, an electronic endoscope for observing an image obtained by imaging the state of a subject using an image sensor has been described as an example. However, the present invention is not limited to this, and an optical image is used. The present invention can also be applied to an endoscope that employs a guide and observes the state of a subject.

2 Electronic Endoscope System 10 Electronic Endoscope 54 First Fluid Line 60 Second Fluid Line 56, 83 Connection Portion 57, 81 First Connector Side Connection 58, 82 Second Connector Side Connection Port 68, 69 Tube 70, 85, 90, 120 Connector

Claims (11)

Endoscope fluid conduit connection for connecting a plurality of endoscope side fluid conduits for transferring fluid and a plurality of external device side fluid conduits provided for an external device provided in the endoscope In structure
An external device-side connector in which a plurality of external device-side connection portions communicating with the external device-side fluid conduit are formed;
An endoscope-side connector in which a plurality of endoscope-side connection portions communicating with the endoscope-side fluid conduit are formed;
At least one of the endoscope side connection portions has a tapered shape that fits with the external device side connection portion.   The fluid conduit connection structure for an endoscope according to claim 1, wherein at least one of the endoscope side connection portions is a female taper opening having a female taper shape. At least one of the external device-side connection structures is a male taper protruding portion having a male taper shape and having a hollow center.
The fluid conduit connection structure for an endoscope according to claim 2, wherein the female taper opening is fitted with the male taper protrusion.   4. The endoscope-side connector is characterized in that a plurality of female taper openings each having a female taper-shaped gradient or different maximum opening area are formed as the endoscope-side connecting portion. Endoscope fluid conduit connection structure. The endoscope side connector has a through hole without a taper as at least one of the endoscope side connection portions,
The external device side connector is formed with a cylindrical protrusion without a taper as the external device side connection portion,
The inside of any one of Claims 1 thru | or 3 by which the said cylindrical protrusion part is inserted in the said through-hole when the said endoscope side connector and the said external apparatus side connector are couple | bonded. Endoscope fluid conduit connection structure. A packing member attached to the outer peripheral surface of the cylindrical protrusion or the inner peripheral surface of the through hole;
The packing member is liquid-tight between the male taper protrusion and the female taper opening by being pressed against the cylindrical protrusion and the through hole when the cylindrical protrusion is inserted into the through hole. 6. The endoscope fluid line connection structure according to claim 5, wherein the connection is performed while maintaining airtightness. An elastic packing member is provided at a position surrounding the male taper protrusion,
When the male taper protrusion is fitted into the female taper opening, the packing member is pressed against the case of the external device side connector and the case of the endoscope side connector to thereby form the male taper protrusion and the female 6. The fluid conduit connection structure for an endoscope according to claim 2, wherein the tapered openings are connected in a liquid-tight or air-tight manner. The external device-side connector includes a plurality of the male taper protrusions having different gradients or axial lengths,
The male taper protrusion is attached to the case of the external device side connector so as to be movable by a predetermined amount along the axial direction,
The packing member is disposed between a case of the external device side connector and the male taper protrusion,
8. The internal view according to claim 7, wherein when the female taper opening and the male taper protrusion are fitted, the packing member absorbs a difference in position in the axial direction of the plurality of male taper protrusions. Mirror fluid conduit connection structure.   The fluid conduit connection structure for an endoscope according to claim 7, wherein the male taper protrusion is formed integrally with the packing member.   The fluid conduit connection structure for an endoscope according to any one of claims 1 to 9, wherein at least one of the female taper openings has a female luer taper shape. An imaging unit that images the inside of the lumen, and an endoscope provided with a plurality of endoscope-side fluid conduits;
An external device provided with a plurality of external device-side fluid conduits;
The endoscope that connects the plurality of endoscope-side fluid conduits and the plurality of external device-side fluid conduits using the fluid conduit connection structure according to any one of claims 1 to 10. An endoscope system comprising a side connector and the external device side connector.

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