Liquid delivery device for endoscope, liquid delivery tube and liquid delivery device main body

Abstract

The present invention provides a liquid delivery device for an endoscope, a liquid delivery tube, and a liquid delivery device body that can easily load and unload a liquid delivery tube. The liquid delivery device for an endoscope comprises a liquid delivery device body (16) that delivers liquid by flattening a liquid delivery tube (302) with a roller (100), wherein the liquid delivery tube (302) comprises: a winding portion (303); a stopper (108) that is arranged closer to the liquid delivery side than the winding portion (303) and protrudes in a tube radial direction orthogonal to the tube axis of the liquid delivery tube (302); and a stopper (110) that is arranged closer to the liquid supply side than the winding portion (303) and protrudes in a tube radial direction, wherein the liquid delivery device body (16) comprises: a limiting portion (112) that engages with the stopper (108) to limit the position of the stopper (108); and a limiting portion (114) that engages with the stopper (110) to limit the position of the stopper (110).

Description

Technical Field

[0001] The present invention relates to a liquid delivery device for an endoscope, a liquid delivery tube and a liquid delivery device body, and in particular to a liquid delivery device for an endoscope, a liquid delivery tube and a liquid delivery device body for delivering liquid to a liquid delivery pipeline provided in an endoscope or a treatment instrument. Background Art

[0002] Conventionally, in the field of endoscopes, liquid is supplied to a subject by using a liquid supply line such as a treatment instrument insertion channel or a water spray pipe inserted into the endoscope. For example, Patent Document 1 discloses an endoscope liquid supply device for supplying liquid to the liquid supply line. In the endoscope liquid supply device, a liquid supply pipe is wound around the outer periphery of a rotor, and the rotor is rotated to flatten a portion of the liquid supply pipe with a roller arranged on the outer periphery of the rotor, thereby supplying liquid to the liquid supply line.

[0003] Patent Document 1: Japanese Patent Application Publication No. 2006-325814

[0004] The liquid delivery tube used in the liquid delivery device for endoscope is removed from the liquid delivery device for endoscope each time it is used because it delivers the drug solution or cleaning solution to the liquid delivery pipeline. Then, the cleaned liquid delivery tube or a new liquid delivery tube is installed in the liquid delivery device for endoscope.

[0005] Furthermore, when a liquid supply pipe to which a liquid is supplied is changed, a liquid supply pipe corresponding to the changed liquid supply pipe may be used in place of a plurality of different types of liquid supply pipes.

[0006] However, in the endoscope liquid supply device of Patent Document 1, there is no consideration for replacement of the liquid supply tube, so each time the liquid supply tube is installed in the endoscope liquid supply device, the length and position of the winding portion of the liquid supply tube have to be adjusted to an appropriate length and position, and there is a problem that this adjustment operation is labor-intensive and time-consuming.

[0007] Therefore, the endoscope liquid supply device of Patent Document 1 has a problem that the liquid supply tube cannot be easily attached or detached. Summary of the invention

[0008] The present invention has been made in view of such circumstances, and provides a liquid supply device for an endoscope, a liquid supply tube, and a liquid supply device main body, which enable easy attachment and detachment of the liquid supply tube.

[0009] In order to achieve the purpose of the present invention, the liquid delivery device for endoscope of the present invention comprises a liquid delivery device body, wherein the liquid delivery tube is wound around a rotor having a plurality of rollers on the outer periphery, and the rotor is rotated to flatten the liquid delivery tube with rollers and deliver liquid. In the liquid delivery device for endoscope, the liquid delivery tube comprises: a winding portion, which is wound around the rotor; a first stopper, which is arranged closer to the liquid delivery side than the winding portion and protrudes in a tube radial direction orthogonal to the tube axis of the liquid delivery tube; and a second stopper, which is arranged closer to the liquid supply side than the winding portion and protrudes in the tube radial direction. The liquid delivery device body comprises: a first limiting portion, which engages with the first stopper to limit the position of the first stopper; and a second limiting portion, which engages with the second stopper to limit the position of the second stopper.

[0010] In one aspect of the present invention, it is preferred that the liquid delivery device body includes a housing that defines a rotor housing chamber capable of housing the rotor, and the housing includes a first restricting portion and a second restricting portion.

[0011] In one embodiment of the present invention, it is preferred that at least one of the first stop portion and the second stop portion has a pair of stop plates separately arranged in the axial direction of the tube, and the limiting portion corresponding to one of the first limiting portion and the second limiting portion has a locking portion that engages with the pair of stop plates to limit the bidirectional movement of the axial direction of the tube in one stop portion.

[0012] In one embodiment of the present invention, the housing preferably has a cover capable of opening and closing the rotor housing chamber, the cover having an extrusion piece protruding toward either the first limiting portion or the second limiting portion, the extrusion piece extruding the first stop portion or the second stop portion restricted by one limiting portion to restrict the radial movement of the tube.

[0013] In one aspect of the present invention, it is preferred that the liquid supply tube includes a first joint connected to a first tube serving as a liquid supply side, and the first joint includes a first stopper.

[0014] In one aspect of the present invention, the first tube preferably has a first connection portion connectable to a liquid supply line provided in an endoscope or a treatment instrument at an end portion on the opposite side to the first joint.

[0015] In one aspect of the present invention, it is preferred that the liquid supply tube includes a second joint connected to a second tube serving as a liquid supply side, and the second joint includes a second stopper.

[0016] In one aspect of the present invention, the second tube preferably has a second connection portion connectable to a tank storing a liquid at an end portion on the opposite side to the second joint.

[0017] In one aspect of the present invention, it is preferred that the liquid supply tube includes a first stopper forming member integrally connected to the liquid supply tube, and the first stopper portion is formed on the first stopper forming member.

[0018] In one aspect of the present invention, it is preferred that the liquid supply tube includes a second stopper forming member integrally connected to the liquid supply tube, and the second stopper portion is formed on the second stopper forming member.

[0019] In order to achieve the purpose of the present invention, the liquid delivery tube of the present invention is used in an endoscope liquid delivery device having a liquid delivery device body, wherein the liquid delivery tube is wound around a rotor having a plurality of rollers on the outer periphery, and the rotor is rotated to flatten the liquid delivery tube with rollers and deliver liquid, and the liquid delivery tube comprises: a winding portion, which is wound around the rotor; a first stopper, which is arranged closer to the liquid delivery side than the winding portion and protrudes in a tube radial direction orthogonal to the tube axis of the liquid delivery tube; and a second stopper, which is arranged closer to the liquid supply side than the winding portion and protrudes in the tube radial direction, and a first limiting portion and a second limiting portion are arranged on the liquid delivery device body, and the position of the first stopper is limited by engaging the first stopper with the first limiting portion, and the position of the second stopper is limited by engaging the second stopper with the second limiting portion.

[0020] In one embodiment of the present invention, it is preferred that at least one of the first stop portion and the second stop portion has a pair of stop plates separately arranged in the axial direction of the tube, and one stop portion engages with a limiting portion corresponding to one of the first limiting portion and the second limiting portion through a pair of stop plates, thereby limiting the bidirectional movement of the tube axial direction in one stop portion.

[0021] In one aspect of the present invention, it is preferred that the liquid supply tube includes a first joint connected to a first tube serving as a liquid supply side, and the first joint includes a first stopper.

[0022] In one aspect of the present invention, the first tube preferably has a first connection portion connectable to a liquid supply line provided in an endoscope or a treatment instrument at an end portion on the opposite side to the first joint.

[0023] In one aspect of the present invention, it is preferred that the liquid supply tube includes a second joint connected to a second tube serving as a liquid supply side, and the second joint includes a second stopper.

[0024] In one aspect of the present invention, the second tube preferably has a second connection portion connectable to a tank storing a liquid at an end portion on the opposite side to the second joint.

[0025] In one aspect of the present invention, it is preferred that the liquid supply tube includes a first stopper forming member integrally connected to the liquid supply tube, and the first stopper portion is formed on the first stopper forming member.

[0026] In one aspect of the present invention, it is preferred that the liquid supply tube includes a second stopper forming member integrally connected to the liquid supply tube, and the second stopper portion is formed on the second stopper forming member.

[0027] In order to achieve the purpose of the present invention, the liquid delivery device body of the present invention winds a liquid delivery tube around a rotor having a plurality of rollers on the outer periphery, and rotates the rotor to flatten the liquid delivery tube with rollers and deliver liquid, and the liquid delivery device body comprises: a first limiting portion, which engages with a first stopper portion which is arranged closer to the liquid delivery side than the winding portion of the rotor wound around the liquid delivery tube, thereby limiting the position of the first stopper portion; and a second limiting portion, which engages with a second stopper portion which is arranged closer to the liquid supply side than the winding portion of the liquid delivery tube, thereby limiting the position of the second stopper portion.

[0028] In one aspect of the present invention, it is preferable that a housing case defining a rotor housing chamber capable of housing the rotor is provided, and the housing case has a first restricting portion and a second restricting portion.

[0029] In one embodiment of the present invention, it is preferred that at least one of the first limiting portion and the second limiting portion has a locking portion, and one limiting portion is engaged with the locking portion through a stop portion corresponding to one of the first stop portion and the second stop portion, thereby limiting the bidirectional axial movement of the liquid delivery tube in one stop portion.

[0030] In one embodiment of the present invention, the housing preferably has a cover capable of opening and closing the rotor housing chamber, the cover having an extrusion piece protruding toward either the first limiting portion or the second limiting portion, the extrusion piece squeezes the first stop portion or the second stop portion restricted by one limiting portion to restrict the movement of the tube radial direction orthogonal to the tube axial direction of the liquid delivery tube.

[0031] Effects of the Invention

[0032] According to the present invention, the liquid feeding tube can be easily attached and detached. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is an overall configuration diagram showing the endoscope liquid supply device according to the embodiment together with the endoscope.

[0034] Figure 2 It is an explanatory diagram showing a tube unit connected to an endoscope and a treatment instrument.

[0035] Figure 3 This is a structural diagram of an endoscope system including an endoscope.

[0036] Figure 4 It is an overall perspective view of the liquid delivery device body.

[0037] Figure 5 This is an enlarged view of the main part of the liquid delivery device with the pump head cover opened.

[0038] Figure 6 It is a perspective view showing the structure of a pipe unit.

[0039] Figure 7It is an enlarged perspective view of a main part showing the shape of the restricting portion.

[0040] Figure 8 It is an explanatory diagram showing the structure of an identifier for identifying the type of a liquid supply tube.

[0041] Fig. 9 This is a diagram showing the installation of the liquid delivery tube relative to the liquid delivery device body.

[0042] Fig.10 This is a control block diagram related to the liquid delivery amount control by the liquid delivery device body.

[0043] Fig.11 It is an explanatory diagram showing the structure of a pipe unit according to another embodiment.

[0044] Fig.12 yes Fig.11 An assembly perspective view of the tube unit.

[0045] Fig.13 yes Fig.11 An explanatory diagram of the engagement of the stopper portion of the pipe unit with the restriction portion.

[0046] Explanation of symbols:

[0047] 10-liquid supply device for endoscope, 12-endoscope, 14-high frequency knife, 16-liquid supply device body, 18-tank, 18A-connection port, 20-tank tray, 22-foot switch, 30-endoscope system, 32-processor device for endoscope, 34-light source device, 34A-processor side connector, 35-image processing device, 36-display, 40-insertion part, 42-flexible part, 44-bending part, 46-front end part, 46A-front end surface, 48-air and water supply channel, 50-water spray pipe, 52-treatment instrument insertion channel, 52A-suction path, 52B-treatment instrument insertion path, 54-operation part body, 56-grip part, 58-anti-bend tube, 60-universal cable, 62-connection Device, 64-electric connector, 66-connector for liquid delivery, 68-air and water delivery button, 70-suction button, 72-clamp channel, 74-liquid delivery pipeline, 74A-base end opening, 76-angle button, 80-housing, 82-operation panel, 83-hinge part, 84-cover, 84A-upper side, 85-rotor accommodating chamber, 86-power switch, 87-power switch indicator light, 88-flow adjustment knob, 90-liquid delivery pipe detection part, 90A-recess, 92-liquid delivery pipe detection indicator light, 94-pump, 95-wall part, 96-motor, 98-rotor, 100-roller, 104-joint, 104A-back, 104B-convex part, 106-joint, 108-stopper, 108A- Axis, 110-stopper, 110A-axis, 112-limiting part, 112A-groove, 114-limiting part, 114A-groove, 116-housing, 116A-upper edge, 118-stopper, 120-squeezing sheet, 126-tube, 127-connecting tube, 128-tube, 129-front end opening, 130-connector body, 132-connector body, 130A-knob surface, 132A-knob surface, 134-knob, 136-knob, 140-identifier, 142-identifier, 144-identifier, 146-protrusion, 148-protrusion, 150-control circuit, 152-CPU, 154-ROM, 156-RAM, 158- AC / DC power supply, 160-cover opening and closing detection button, 162-pump control circuit, 164-variable resistor, 166-micro switch, 168-actuator, 170-actuator, 300-tube unit, 302-liquid supply tube, 302A-end, 302B-end, 303-winding portion, 400-tube unit, 402-liquid supply tube, 500-tube unit, 502-liquid supply tube, 600-tube unit, 602-liquid supply tube, 700-tube unit, 702-liquid supply tube, 800-tube unit, 802-liquid supply tube, 803-winding portion, 804-stop forming component, 806-stop forming component, 808-annular portion, 810-claw portion, 812-claw portion, 814-leaf spring. DETAILED DESCRIPTION

[0048] Hereinafter, embodiments of the liquid supply device for endoscope, the liquid supply tube, and the liquid supply device main body according to the present invention will be described with reference to the drawings.

[0049] Figure 1 1 is a diagram showing the overall configuration of an endoscope liquid supply device 10 and an endoscope 12 according to an embodiment.

[0050] Figure 2 This is an explanatory diagram showing four different types of tube units 300, 400, 500, and 600 connected to the liquid supply pipeline on the side of the endoscope 12, and a tube unit 700 connected to the liquid supply pipeline on the side of the high-frequency knife 14 as a treatment instrument. These tube units 300 to 700 are mounted on the liquid supply device body 16 constituting the liquid supply device 10 for endoscopes, and can be replaced according to the purpose or use.

[0051] The endoscope liquid supply device 10 has a tank 18 storing a liquid such as physiological saline or a drug solution, and the tank 18 is detachably placed on a tank tray 20 provided in the liquid supply device body 16. The liquid supply device body 16 and the tube units 300 to 700 will be described later.

[0052] Next, regarding an example of the endoscope 12 connected to the endoscope liquid supply device 10, refer to Figure 3 Provide explanation.

[0053] Figure 3 1 is a block diagram of an endoscope system 30 including the endoscope 12. The endoscope system 30 includes the endoscope 12, an endoscope processor device 32, and a display 36.

[0054] The endoscope 12 includes an operation portion 38 and an insertion portion 40 which is provided on the distal end side of the operation portion 38 and is inserted into the observed body.

[0055] The insertion portion 40 has a soft portion 42, a curved portion 44, and a distal end portion 46 in order from the proximal end toward the distal end. Figure 3 The air supply and water supply channel 48, the water spray pipe 50, and the treatment instrument insertion channel 52 are shown in dotted lines. The air supply and water supply channel 48 is configured as a pipeline for spraying liquid or gas through a nozzle (not shown) to an observation window (not shown) provided on the front end surface 46A of the front end portion 46. The water spray pipe 50 is configured as a liquid supply pipeline for supplying liquid to the observed body, and the treatment instrument insertion channel 52 is configured as a pipeline for inserting a treatment instrument and a liquid supply pipeline for supplying liquid to the observed body.

[0056] The operation part 38 includes an operation part body 54 and a grip part 56 connected to the operation part body 54. The proximal end of the insertion part 40 is connected to the distal end of the grip part 56 via an anti-bend tube 58. The grip part 56 is gripped by the surgeon when performing an examination using the endoscope 12.

[0057] The operation unit main body 54 is provided with a universal cable 60. A connector device 62 is provided at the front end side of the universal cable 60, and the connector device 62 is connected to the endoscope processor device 32. The endoscope processor device 32 includes a light source device 34 and an image processing device 35. The light source device 34 includes a processor-side connector 34A to which the connector device 62 is connected. In addition, a display 36 for displaying an image processed by the image processing device 35 is connected to the image processing device 35. The endoscope system 30 has a structure in which power and optical signals are transmitted in a non-contact manner between the endoscope 12 and the endoscope processor device 32 via a connector portion composed of the connector device 62 and the processor-side connector 34A. Thus, light from the light source device 34 is transmitted via an optical cable (not shown) and irradiated from an illumination window (not shown) provided on the front end surface 46A of the front end portion 46. In addition, the optical signal of the image read from the above-mentioned observation window is image-processed by the image processing device 35 and displayed as an image on the display 36.

[0058] Here, if Figure 2 As shown, the connector device 62 is provided with a liquid supply connector 66. The liquid supply connector 66 is connected to a water spray pipe 50 (see FIG. 5 ) which is inserted through the insertion portion 40 and the universal cable 60. Figure 3 ) is opened at the base end. The front end opening of the water spray pipe 50 is configured as a spray port at the front end surface 46A of the front end portion 46. Figure 2 Two types of tube units 500 or tube units 600 are connected to the liquid supply connector 66 in a replaceable manner.

[0059] Back to Figure 3 The operation portion main body 54 is provided with an air supply and water supply button 68 and a suction button 70 in parallel. When the surgeon operates the air supply and water supply button 68, liquid or gas is supplied to the air supply and water supply channel 48, thereby spraying the liquid or gas toward the above-mentioned observation window. Furthermore, when the surgeon operates the suction button 70, the liquid in the observed body is sucked from the front end opening of the treatment instrument insertion channel 52 disposed on the front end surface 46A of the front end portion 46 through the treatment instrument insertion channel 52.

[0060] The treatment instrument insertion passage 52 is branched into a suction passage 52A and a treatment instrument insertion passage 52B inside the grip 56. The suction passage 52A is connected to a suction port (not shown) of a connector device 62 via a cylinder (not shown) of a suction button 70 and a universal cable 60, and the suction port is connected to a suction pump (not shown). Furthermore, the treatment instrument insertion passage 52B is connected to a forceps opening 72 protruding from the grip 56. In addition, a forceps opening 72 is connected in a replaceable manner. Figure 2 There are two types of pipe units 300 or pipe units 400 shown.

[0061] and, Figure 2 The high frequency knife 14 shown is Figure 3 The forceps opening 72 is introduced into the treatment instrument insertion passage 52 through the treatment instrument insertion passage 52B. Figure 2 The liquid supply line 74 indicated by the dotted line in the figure has a tube unit 700 connected to a base end opening 74A of the liquid supply line 74 .

[0062] Back to Figure 3 A pair of angle knobs 76, 76 for bending the bending portion 44 are provided on the operation portion main body 54. The pair of angle knobs 76, 76 are provided on the same axis so as to be rotatable.

[0063] The above is Figure 3 The schematic structure of the endoscope system 30 shown in FIG. Figure 1 and Figure 2 The endoscope liquid supply device 10 shown will be described.

[0064] like Figure 1 As shown, the endoscope liquid supply device 10 includes a liquid supply device body 16 , a tank 18 , and a foot switch 22 . Figure 2 The five different types of tube units 300 to 700 shown are mounted on the liquid feeding device main body 16 and can be replaced according to the purpose or use.

[0065] Figure 4 It is an overall perspective view of the liquid feeding device main body 16 .

[0066] like Figure 4 As shown, the liquid delivery device body 16 has a housing 80. A pump head cover (hereinafter referred to as "cover") 84, a power switch 86, a power switch indicator light 87, a flow rate adjustment knob 88, a liquid delivery tube detection unit 90, and a liquid delivery tube detection indicator light 92 are respectively arranged at predetermined positions on an operation panel 82 constituting the front of the housing 80. In addition, the operation panel 82 is configured as an inclined surface facing obliquely upward.

[0067] Figure 5It is an enlarged view of the main part of the liquid feeding device main body 16 with the cover 84 opened, and is an explanatory view showing the pump 94 covered by the cover 84 exposed.

[0068] like Figure 4 and Figure 5 As shown, the cover 84 is configured in a rectangular shape as a whole, and is provided on the liquid supply device body 16 so as to be openable and closable via hinges 83, 83 provided on both left and right sides of the lower portion thereof.

[0069] like Figure 5 The pump 94 is provided in the rotor accommodation chamber 85 exposed by opening the cover 84. The pump 94 has a DC brushless motor (see Fig.10 . Hereinafter referred to as "motor". ) 96, a disc-shaped rotor 98 rotated by the motor 96, and three rollers 100, 100, 100 installed at equal intervals on the outer periphery of the rotor 98. With respect to the pump 94, a liquid delivery pipe of one tube unit selected from five types of tube units 300 to 700 is installed in the liquid delivery device body 16 in a state of being wound into a U shape on the outer periphery of the rotor 98. In addition, the liquid delivery pipe will be described later.

[0070] According to the pump 94 constructed as described above, a portion of the liquid delivery tube is compressed by the roller 100, and the rotor 98 is moved along the Figure 5 The rotor 98 rotates in the clockwise direction indicated by the arrow A. As a result, the flattened position of the rotor 98 moves in the clockwise direction, thereby the liquid in the liquid delivery pipe is delivered to the liquid delivery portion. In addition, in the present application specification, as an example of the liquid delivery portion, the water spray pipe 50, the treatment device insertion channel 52 and the liquid delivery pipeline 74 are illustrated for description.

[0071] Below, examples are shown Figure 2 The description will be made with reference to the pipe unit 300 among the pipe units 300 to 700 shown.

[0072] Figure 6 3 is a perspective view showing the structure of the pipe unit 300. Figure 2 The pipe units 400 to 700 shown are for Figure 6 The same structures of the pipe unit 300 are denoted by the same reference numerals, and the description thereof is omitted.

[0073] The tube unit 300 includes a liquid supply tube 302. The liquid supply tube 302 is an elastic tube made of, for example, silicone rubber, and has a winding portion 303 as a portion wound around the rotor 98 when wound around the rotor 98. A joint 104 is provided at an end portion 302A closer to the liquid supply side than the winding portion 303, and a joint 106 is provided at an end portion 302B closer to the liquid supply side than the winding portion 303. The joint 104 is an example of a first joint, and the joint 106 is an example of a second joint.

[0074] The joint 104 is provided with a stopper 108, and the joint 106 is provided with a stopper 110. These stoppers 108 and 110 are respectively arranged in the direction of the tube axial direction ( Figure 6 The direction of arrow B) is perpendicular to the pipe radial direction ( Figure 6 Here, the stopper 108 is an example of the first stopper, and the stopper 110 is an example of the second stopper.

[0075] And, if Figure 6 As shown, the stoppers 108, 110 have a Figure 6 Furthermore, the stopper portions 108 and 110 have respective shaft portions 108A and 110A sandwiched between the shaft portions 108A and 110A in the axial direction of the tube ( Figure 6 A pair of stop plates 118, 118 are separately configured in the direction of arrow B).

[0076] On the other hand, Figure 5 As shown, the liquid delivery device body 16 is provided with: a limiting portion 112 and a stopper portion 108 (reference Figure 6 ) engages to limit the position of the stopper portion 108; and a limiting portion 114, and the stopper portion 110 (reference Figure 6 ) engages to restrict the position of the stopper 110. These restricting portions 112 and 114 are formed in a rectangular housing case 116 on the operation panel 82, and are provided separately from each other at an upper side portion 116A of the housing case 116 that defines the rotor housing chamber 85. Here, the restricting portion 112 is an example of a first restricting portion, and the restricting portion 114 is an example of a second restricting portion.

[0077] and, Figure 5 The limiting portions 112 and 114 shown in the figure have grooves 112A and 114A (see FIG. Figure 7 ). The grooves 112A and 114A are formed by cutting off a part of the upper side portion 116A.

[0078] Figure 7 It is an enlarged perspective view of a main part showing an example of the shape of the restriction portions 112 and 114 .

[0079] like Figure 7 As shown, the groove 112A of the restricting portion 112 is formed in a U shape, and the groove 114A of the restricting portion 114 is formed in an L shape. Thus, the stopper 108 is engaged with the restricting portion 112 by pushing the shaft portion 108A into the groove 112A. And the stopper 110 is engaged with the restricting portion 114 by pushing the shaft portion 110A into the groove 114A along the L shape.

[0080] At this time, a pair of stopper pieces 118, 118 are respectively engaged with the upper edge portion 116A, so that the tube axial direction ( Figure 6 The bidirectional movement of the liquid delivery tube 302 in the direction of the arrow B is restricted. This structure prevents the liquid delivery tube 302 from moving in the axial direction (direction of the arrow B) when the rotor 98 rotates. Figure 6 The position deviation of the liquid delivery device body 16 (in the direction of arrow B) can be prevented, thereby achieving a stable liquid delivery operation based on the liquid delivery device body 16. In addition, the pair of stopper pieces 118, 118 only need to be provided in at least one of the stopper parts 108, 110, and from the viewpoint of the above-mentioned movement restriction, it is preferred to be provided in both the stopper parts 108, 110.

[0081] Furthermore, the diameters of the shafts 108A and 110A of the stoppers 108 and 110 are different from each other, and the widths of the grooves 112A and 114A of the restricting portions 112 and 114 are formed to correspond to the diameters of the shafts 108A and 110A, respectively. By configuring the stoppers 108 and 110 and the restricting portions 112 and 114 in this way, it is possible to prevent the stopper 108 from being incorrectly mounted on the restricting portion 114 or the stopper 110 from being incorrectly mounted on the restricting portion 112.

[0082] With the above-described structure, according to the endoscope liquid supply device 10 of the embodiment, the liquid supply tube 302 can be mounted on the liquid supply device body 16 simply by winding the winding portion 303 around the outer peripheral portion of the rotor 98, engaging the stopper 108 with the limiting portion 112, and engaging the stopper 110 with the limiting portion 114. Furthermore, the liquid supply device body 16 can be removed from the liquid supply tube 302 simply by removing the stopper 108 from the limiting portion 112 and the stopper 110 from the limiting portion 114. Thus, each of the five types of liquid supply tubes of the tube units 300 to 700 can be easily attached to and detached from the liquid supply device body 16.

[0083] And, if Figure 5 As shown, the upper side portion 84A of the cover 84 has a sword-shaped pressing piece 120 protruding toward the limiting portion 114. When the cover 84 is closed, the pressing piece 120 presses the shaft portion 110A of the stopper portion 110 engaged with the groove 114A of the limiting portion 114. As a result, the pipe radial direction ( Figure 6 The movement of the cover 84 (in the direction of arrow C) is restricted by the pressing piece 120. Therefore, when the cover 84 is closed, the stopper 110 is kept in a state of being engaged with the restricting portion 114. In addition, such a pressing piece 120 is not limited to being provided on the restricting portion 114 side, and may also be provided on the restricting portion 112 side. Therefore, when the cover 84 is closed, the stopper 108 is kept in a state of being engaged with the restricting portion 112.

[0084] and, Figure 6The joints 104 and 106 shown in the figure are configured as couplers for connecting the pipes to each other. A pipe 126 serving as the liquid delivery side is connected to the joint 104. The pipe 126 has a connecting pipe 127 at the end on the side opposite to the joint 104, and the connecting pipe 127 is detachably connected to the pipe 126. Figure 2 The clamp channel opening 72 is shown. In addition, the tube units 400 to 700 also have the same tube 126, and the tube 126 of the tube unit 400, the tube 126 of the tube units 500 and 600, and the tube 126 of the tube unit 700 are detachably connected to the clamp channel opening 72, the liquid supply connector 66, and the base end opening 74A of the high-frequency knife 14 via the connecting tube 127. Here, the tube 126 is an example of the first tube, and the connecting tube 127 is an example of the first connecting portion.

[0085] And, in Figure 6 A tube 128 serving as a liquid supply side is connected to the connector 106 shown in the figure. The tube 128 has a front end opening 129 at the end opposite to the connector 106. Figure 2 The connection port 18A of the tank 18 shown is inserted into the tank 18 and is located below the liquid surface of the tank 18. In addition, the tube units 400 to 700 also have the same tube 128, and the front end opening 129 of the tube 128 of the tube unit 400, the tube 128 of the tube units 500 and 600, and the tube 128 of the tube unit 700 are respectively inserted into the tank 18 from the connection port 18A of the tank 18 and are located below the liquid surface. In addition, the tube 128 is an example of a second tube, and the front end opening 129 is an example of a second connection portion.

[0086] like Figure 6 As shown, the connectors 104 and 106 respectively have connector main bodies 130 and 132 in a substantially rectangular parallelepiped shape. Each connector main body 130 and 132 has a knob portion 134 and 136 having a pair of knob surfaces 130A, 130A, 132A and 132A facing each other. By providing such knob portions 134 and 136 on the connectors 104 and 106, the knob portions 134 and 136 can be gripped by fingers, so that the stopper portions 108 and 110 can be easily engaged with the restricting portions 112 and 114.

[0087] Here, reference Figure 2 The tube units 300 to 700 will be described.

[0088] As described above, the tube units 300 and 400 are connected to the forceps opening 72. The tube unit 300 is a reusable type that is sterilized and cleaned for each inspection, and the tube unit 400 is a disposable type that is discarded after the inspection. In addition, the tube units 500 and 600 are connected to the liquid supply connector 66. The tube unit 500 is a reusable type that is sterilized and cleaned for each inspection, and the tube unit 600 is a disposable type that is discarded after the inspection. Furthermore, the tube unit 700 is connected to the base end opening 74A of the high-frequency knife 14 and is a disposable type that is discarded after the inspection.

[0089] and, Figure 3 The illustrated treatment tool insertion passage 52 has a larger inner diameter than the water jet pipe 50 and the liquid delivery line 74, and therefore the liquid delivery amount (ml / min) is set to be larger than that of the water jet pipe 50 and the liquid delivery line 74. For this reason, the inner diameters of the liquid delivery pipes 302 and 402 are configured to be larger than the inner diameters of the liquid delivery pipes 502, 602, and 702.

[0090] Next, refer to Figure 8 An example of an identifier for identifying the type of the liquid supply tubes 302 , 402 , 502 , 602 , and 702 will be described.

[0091] These identifiers 140, 142, 144 are configured in mutually different shapes by a combination of two protrusions 146, 148. Here, the protrusions 146, 148 are examples of mechanical identification information.

[0092] Two protrusions 146 and 148 are provided at a distance from each other at the top and bottom of the back surface 104A of the connector 104, indicating that the identifier 140 is the identifier of the liquid supply tubes 302 and 402. In addition, one protrusion 146 is provided at the upper part of the back surface 104A of the connector 104, indicating that the identifier 142 is the identifier of the liquid supply tubes 502 and 602. Furthermore, one protrusion 148 is provided at the lower part of the back surface 104A of the connector 104, indicating that the identifier 144 is the identifier of the liquid supply tube 702.

[0093] like Fig. 9 As shown, when the liquid supply tube 302 (402, 502, 602, 702) is mounted on the liquid supply device body 16, such identifiers 140, 142, 144 are provided at positions that can be recognized by the liquid supply tube detection unit 90. Then, by connecting the joint 104 to the liquid supply tube detection unit 90, the identifiers 140, 142, 144 are recognized by the identifier recognition mechanism of the liquid supply device body 16. The identifier recognition mechanism will be described later.

[0094] In addition, if Figure 8As shown, a convex portion 104B is formed on the upper portion of the back surface 104A of the connector 104, and a concave portion 90A is formed on the upper portion of the liquid delivery tube detection portion 90 (see Figure 5 ), by engaging the convex portion 10B with the concave portion 90A (reference Figure 7 ), thereby easily positioning the connector 104 relative to the liquid delivery tube detection portion 90.

[0095] Fig.10 2 is a control block diagram related to the liquid supply amount control by the liquid supply device main body 16.

[0096] like Fig.10 As shown, the liquid delivery amount based on the liquid delivery device body 16 is controlled by a CPU (Central Processing Unit) 152 in a control circuit 150. In the control circuit 150, multiple circuits such as a ROM (Read Only Memory) 154 for storing programs and a RAM (Random access memory) 156 for temporarily storing data are provided.

[0097] In the ROM 154, data (flow range setting data) for setting the flow range of the liquid for each type of the liquid delivery tube according to the detection signal from the micro switch 166 described later is stored. In addition, power is supplied from the AC / DC power supply 158 to each circuit provided in the control circuit 150. In addition, the micro switch 166 is an example of the above-mentioned identifier recognition mechanism.

[0098] The control circuit 150 is connected to a cover opening / closing detection button 160 for detecting the opening / closing of the cover 84, the foot switch 22, the flow rate adjustment knob 88, and a pump control circuit 162 for operating the pump 94 according to the operation position of the flow rate adjustment knob 88. The pump control circuit 162 has a current switching circuit for switching the current flowing to the motor 96, and a variable resistor 164 is used as an example of the current switching circuit. In addition, when a signal indicating that the cover 84 is closed is output from the cover opening / closing detection button 160, the control circuit 150 operates each circuit.

[0099] The control circuit 150 reads data from the ROM 154 according to the detection signal from the switch 166, and outputs the data to the pump control circuit 162, thereby setting the flow rate delivered from the pump 94 to a flow rate range corresponding to the type of the liquid delivery tube connected to the micro switch 166. In addition, the control circuit 150 adjusts the flow rate within the above-mentioned flow rate range according to the operation position of the flow rate adjustment knob 88. Specifically, the flow rate adjustment knob 88 can be operated within the operation range of 0 to 100%. For example, when the flow rate adjustment knob is at the operation position of 50%, the control circuit 150 sets the rotation speed of the rotor 98 to deliver liquid at an intermediate flow rate in the above-mentioned flow rate range. That is, the control circuit 150 sets the liquid delivery amount to the liquid delivery amount (ratio relative to the flow rate range) corresponding to the operation position of the flow rate adjustment knob 88 within the set flow rate range. As a result, the liquid delivery amount (ratio relative to the flow rate range) corresponding to the operation position of the flow rate adjustment knob 88 can be achieved within the range of the flow rate range set for each type of liquid delivery tube.

[0100] Here, Figure 5 The liquid delivery tube detection unit 90 shown in FIG. 1 has protrusions 146 and 148 (see FIG. 146 ) that can be mechanically read. Figure 8 ) of the micro switch 166 (reference Fig.10 ).

[0101] The micro switch 166 has a connection between the connector 104 and the liquid delivery tube detection unit 90 (reference Figure 5 ) (reference Fig. 9 ), by the protrusions 146, 148 (reference Figure 8 ) presses the two actuators 168, 170 (reference Figure 5 ), and two terminal portions (not shown) that detect that the actuators 168 and 170 are pressed and output the detection signals to the control circuit 150.

[0102] To explain specifically, for example, when the connector 104 of the liquid supply tube 302 is connected to the liquid supply tube detection unit 90, the actuator 168 is pressed by the protrusion 146, and the actuator 170 is pressed by the protrusion 148, so a detection signal indicating that the actuators 168 and 170 are pressed is output from the above-mentioned terminal portion to the control circuit 150.

[0103] The control circuit 150 recognizes that the liquid delivery device body 16 is connected to the liquid delivery tube 302 based on the above-mentioned detection signal, and changes the operating conditions of the pump 94. That is, when the liquid delivery tube 302 is connected, the rotation speed range of the rotor 98 is set so that the liquid delivery amount is within the flow range of, for example, from 400 ml / min to 700 ml / min. Then, within the set flow range, the liquid delivery amount is set to the liquid delivery amount (relative to the ratio of the flow range) corresponding to the operating position of the flow adjustment knob 88. Thus, if the foot switch 22 is pressed, the rotor 98 rotates at a speed corresponding to the liquid delivery amount (relative to the ratio of the flow range) corresponding to the operating position of the flow adjustment knob 88, and the liquid corresponding to the speed is delivered to the disposal instrument insertion channel 52.

[0104] The same also applies when the joint 104 of the liquid supply tube 402 is connected to the liquid supply tube detection unit 90 .

[0105] Furthermore, when the joint 104 of the liquid supply tube 502 is connected, the actuator 168 is pressed by the protrusion 146, and thus a detection signal indicating that the actuator 168 is pressed is output from the terminal portion to the control circuit 150. Thus, the rotation speed range of the rotor 98 is set so that the liquid supply amount that can be adjusted by the flow rate adjustment knob 88 is within the flow rate range of, for example, 60 ml / min to 190 ml / min. Then, within the set flow rate range, the liquid supply amount is set to the liquid supply amount (ratio relative to the flow rate range) corresponding to the operation position of the flow rate adjustment knob 88.

[0106] The same also applies when the joint 104 of the liquid supply tube 602 is connected to the liquid supply tube detection unit 90 .

[0107] Furthermore, when the joint 104 of the liquid delivery tube 702 is connected, the actuator 170 is pressed by the protrusion 148, and thus a detection signal indicating that the actuator 170 is pressed is output from the terminal portion to the control circuit 150. Thus, the rotation speed range of the rotor 98 is set so that the liquid delivery amount that can be adjusted by the flow rate adjustment knob 88 is within the flow rate range of, for example, 90 ml / min to 190 ml / min. Then, within the set flow rate range, the liquid delivery amount is set to the liquid delivery amount (ratio relative to the flow rate range) corresponding to the operation position of the flow rate adjustment knob 88.

[0108] Furthermore, the control circuit 150 controls the liquid delivery tube detection indicator lamp 92 to light up according to the detection signal output from the micro switch 166 (i.e., the identifier recognized by the micro switch 166 as the identifier recognition mechanism). Specifically, when the connector 104 of the liquid delivery tubes 302 and 402 is connected, the lamp 92A of the liquid delivery tube detection indicator lamp 92 is lit (refer to Figure 5). When the joints 104 of the liquid delivery tubes 502 and 602 are connected, the light 92B of the liquid delivery tube detection display light 92 is turned on (refer to Figure 5 ). Furthermore, when the connector 104 of the liquid supply tube 702 is connected, the light 92C of the liquid supply tube detection display light 92 is turned on (refer to Figure 5 ). Thus, the surgeon can know the liquid delivery tubes 302 to 702 connected to the liquid delivery device body 16 simply by confirming that the lamps 92A, 92B, and 92C are lit. In addition, the micro switch 166 and the control circuit 150 are examples of identifier recognition mechanisms. Furthermore, the micro switch 166 is an example of a mechanical reading device.

[0109] Next, the operation of the endoscope liquid supply device 10 according to the embodiment will be described.

[0110] Hereinafter, a case where the tube unit 300 is selected and used among the tube units 300 to 700 will be described.

[0111] First, if Figure 5 As shown in FIG. 1 , the cover 84 of the liquid supply device body 16 is opened to expose the rotor 98. Next, the winding portion 303 (see FIG. 1 ) of the liquid supply tube 302 is wound around the outer periphery of the rotor 98. Figure 6 ) into a U shape. Then, Figure 7 As shown, the stopper 108 is engaged with the limiting portion 112 to limit the position of the stopper 108 , and the stopper 110 is engaged with the limiting portion 114 to limit the position of the stopper 110 .

[0112] Next, the joint 104 of the tube unit 300 is connected to the liquid delivery tube detection unit 90. Specifically, Figure 5 and Figure 7 As shown, after the connector 104 is positioned in the liquid delivery tube detection unit 90 by engaging the convex portion 104B on the connector 104 side with the concave portion 90A on the liquid delivery tube detection unit 90, as shown in FIG. Fig. 9 As shown, the joint 104 is pushed toward the liquid supply tube detection unit 90. Thus, the joint 104 can be connected to the liquid supply tube detection unit 90 easily and reliably.

[0113] Afterwards, if Figure 1 The cover 84 is closed. Through the above operation, the tube unit 300 can be fixed to the liquid feeding device body 16.

[0114] at this time, Figure 5 The extrusion sheet 120 shown in the figure presses the shaft portion 110A of the stopper 110 toward the groove 114A to limit the tube radial direction ( Figure 6 The movement of the stopper 110 in the direction of the arrow C) can prevent the position deviation of the stopper 110 relative to the limiting portion 114. Figure 7The operation of connecting the joint 104 to the liquid feeding tube detection portion 90 may be performed before the operation of engaging the stopper portion 108 with the restriction portion 112 .

[0115] Furthermore, in the liquid delivery tube 302, the tube axial direction ( Figure 6 The positions of the stopper 108 and the stopper 110 on the direction of arrow B) are preferably set so that the liquid delivery tube 302 is not affected by the axial direction of the tube ( Figure 6 The position of the liquid supply device body 16 is connected to the liquid supply device body 16 by preventing excessive stress (excessive tension) from being caused by the excessive stress (in the direction of arrow B) of the liquid supply device body 16. When the stopper 108 and the stopper 110 are provided at such a position so that the stopper 108 is engaged with the limiting portion 112 and the stopper 110 is engaged with the limiting portion 114, the length and position of the winding portion 303 of the liquid supply tube 302 can be set to an appropriate length and position. As a result, the adjustment operation of the length and position of the winding portion 303 becomes easy, and the variation of the liquid supply amount by the pump 94 can be reduced, so that a stable liquid supply operation by the liquid supply device body 16 can be achieved.

[0116] Next, Figure 6 The connecting tube 127 of the tube 126 shown is connected to the clamp port 72, and the front end opening 129 of the tube 128 is inserted into the tank 18 from the connecting port 18A of the tank 18 and placed below the liquid surface. Thus, preparations for delivering the liquid in the tank 18 to the treatment instrument insertion channel 52 are completed.

[0117] Next, the power switch 86 is pressed to start the liquid delivery device body 16. As a result, the power switch indicator light 87 is lit. At this time, the cover 84 is closed, so Fig.10 The control circuit 150 shown recognizes that the liquid delivery tube 302 is connected to the liquid delivery device body 16 based on the detection signal from the micro switch 166, and distinguishes the liquid delivery tube. Then, the control circuit 150 reads out the data for setting the flow range of the liquid to the flow range corresponding to the liquid delivery tube 302 from the ROM 154, and outputs the data to the pump control circuit 162. Thus, the rotation speed range of the rotor 98 is set so that the liquid delivery amount that can be adjusted by the flow adjustment knob 88 is within the flow range from 400 ml / min to 700 ml / min. And, the control circuit 150 sets the rotation speed of the rotor 98 in such a way that the liquid at a flow rate within the above-mentioned flow range is delivered according to the operating position of the flow adjustment knob 88. And, at this time, the control circuit 150 lights up the light 92A of the liquid delivery tube detection display light 92 (reference) according to the above-mentioned detection signal. Figure 5 ).

[0118] After that, if the foot switch 22 is pressed, the rotor 98 rotates at a speed corresponding to the liquid delivery amount (ratio relative to the flow range) corresponding to the operation position of the flow adjustment knob 88. As a result, the liquid can be delivered to the disposal device insertion channel 52 within the flow range corresponding to the liquid delivery tube 302. Then, when it is desired to make fine adjustments to the liquid delivery amount, the flow adjustment knob 88 is operated. As a result, the liquid delivery amount can be finely adjusted without exceeding the above-mentioned set flow range. In addition, the same action is performed when the tube unit 400 is fixed to the liquid delivery device body 16.

[0119] Thereafter, when removing the tube unit 300 from the liquid supply device body 16, the cover 84 is opened, the joint 104 is removed from the liquid supply tube detection portion 90, the stopper 108 is removed from the restriction portion 112, and the stopper 110 is removed from the restriction portion 114. The tube unit 300 can be removed from the liquid supply device body 16 simply by performing this operation.

[0120] In addition, when the tube units 400 to 700 are attached to the liquid supply device main body 16 or detached from the liquid supply device main body 16 , the same procedure as that of the tube unit 300 is also followed.

[0121] Thus, according to the endoscope liquid feeding device 10 of the embodiment, the liquid feeding device 10 is directed in the tube radial direction ( Figure 6 A stopper 108, 110 protruding (in the direction of arrow C) is provided on the liquid delivery tube 302, and a limiting portion 112, 114 which engages with the stopper 108, 110 to limit the position of the stopper 108, 110 is provided on the liquid delivery device body 16, so that the liquid delivery tube 302 can be easily loaded and unloaded on the liquid delivery device body 16.

[0122] The endoscope liquid supply device 10 of the embodiment includes the pump 94 which wraps the winding portion 303 around the outer periphery of the rotor 98 and rotates the rotor 98 to flatten the liquid supply tubes 302 to 702 with the roller 100 to deliver the liquid. Therefore, the endoscope liquid supply device 10 of the embodiment has the following advantages.

[0123] That is, the pump 94 of the embodiment has a motor 96, a rotor 98, and a plurality of rollers 100, and has substantially the same operating principle as a peristaltic pump called a roller pump or a tube pump, but differs in structure in the following respects.

[0124] That is, the peristaltic pump is a known structure (for example, see Japanese Patent Publication No. 6-007372) in which a semi-circular wall surface is provided around a plurality of rollers, and a winding portion is arranged in a state of elastic deformation (reduced diameter) in a narrow gap between the wall surface and the plurality of rollers. Furthermore, the wall surface is a wall surface fixed to the pump body.

[0125] In contrast, the pump 94 of the embodiment does not have a fixed semi-circular wall surface, and when the winding portion 303 is wound, the winding portion 303 is directly wound around the rotor 98 in a U-shape. According to the pump 94 of the embodiment, as in the above-mentioned peristaltic pump, the laborious and time-consuming operation of reducing the diameter of the winding portion to arrange it in the above-mentioned narrow gap can be omitted, so the installation and replacement operation of the liquid delivery tube 302 of the pump 94 becomes easy. In addition, as Figure 5 As shown, the pump 94 of the embodiment has an arc-shaped wall portion 95 below the rotor 98, and the wall portion 95 is in a retracted position (refer to Figure 5 ) and the closing action of the cover 84 are linked to the vertical movement between the extended position (not shown) where the winding portion 303 is sandwiched between the roller 100. Therefore, by closing the cover 84, the winding portion 303 of the liquid delivery tube 302 is sandwiched between the roller 100 and the wall portion 95.

[0126] Furthermore, in the above embodiment, the stopper 108 is provided on the joint 104 and the stopper 110 is provided on the joint 106. However, the positions where the stoppers 108 and 110 are provided are not limited to the structure of the embodiment.

[0127] Fig.11 FIG. 8 shows another embodiment of a pipe unit 800. Fig.11 When the pipe unit 800 is shown, Figure 6 The same or similar components of the pipe unit 300 are denoted by the same reference numerals, and description thereof will be omitted.

[0128] Fig.11 The tube unit 800 shown is composed of one liquid delivery tube 802. That is, Fig.11 In the figure, relative to Figure 6 The pipe unit 300 shown is a pipe unit 800 without the fittings 104 , 106 and the pipes 126 , 128 .

[0129] The tube unit 800 has a winding portion 803, and a stopper forming member 804 is provided closer to the liquid supply side than the winding portion 803, and the stopper 108 is formed on the stopper forming member 804. In addition, the tube unit 800 has a stopper forming member 806 closer to the liquid supply side than the winding portion 803, and the stopper 110 is formed on the stopper forming member 806.

[0130] Fig.12 It is an assembled perspective view of the tube unit 800 , and shows a state before the stopper forming members 804 , 806 are connected to the liquid supply tube 802 .

[0131] like Fig.12As shown, the stopper forming members 804 and 806 respectively include an annular portion 808 for inserting the liquid feeding tube 802 through the cylindrical shaft portions 108A and 110A of the stopper portions 108 and 110 , and a pair of claw portions 810 and 812 for elastically expanding the diameter of the annular portion 808 .

[0132] The annular portion 808 is formed by a leaf spring 814 formed in an annular shape. Fig.12 In the natural state shown, the inner diameter of the annular portion 808 is configured to be smaller than the outer diameter of the liquid supply tube 802. Furthermore, the claws 810 and 812 are formed to protrude from the ends of the leaf spring 814 in the circumferential direction.

[0133] When assembling the tube unit 800 with the liquid supply tube 802 and the stopper forming parts 804 and 806, first, the claws 810 and 812 are held by fingers to bring the two closer to each other, thereby expanding the diameter of the annular parts 808 and 808. Then, the liquid supply tube 802 is inserted through the annular parts 808 and 808 of the stopper forming parts 804 and 806 via the shaft parts 108A and 110A. Then, after positioning the stopper parts 108 and 110 in the tube axial direction indicated by the arrow B, the fingers are separated from the claws 810 and 812. As a result, the inner diameter of the annular parts 808 and 808 becomes smaller than the diameter of the liquid supply tube 802, and the stopper forming parts 804 and 806 are integrally connected to the liquid supply tube 802. In this way, the tube unit 800 is assembled.

[0134] Furthermore, when the tube unit 800 is mounted on the liquid delivery device body 16 (see Figure 4 ) Fig.13 As shown in FIG. 1 , the liquid delivery tube 802 can be installed on the liquid delivery device body 16 by simply engaging the stopper 108 with the limiting portion 112 and engaging the stopper 110 with the limiting portion 114. Furthermore, the liquid delivery tube 802 can be removed from the liquid delivery device body 16 by simply removing the stopper 108 from the limiting portion 112 and removing the stopper 110 from the limiting portion 114. Fig.11 The tube unit 800 shown can also be easily attached to and detached from the liquid supply device main body 16 .

[0135] Furthermore, the tube unit 800 can adjust the positions of the stoppers 108 and 110 of the liquid supply tube 802 in the tube axial direction, and thus can adjust the length of the winding portion 803 wound around the outer peripheral portion of the rotor 98. Thus, when using another endoscope liquid supply device having a different length of the outer peripheral portion of the rotor (rotor size), the length of the winding portion 803 can be easily adjusted to a length corresponding to the size of the rotor, so that the versatility is high.

[0136] Furthermore, one of the stop forming parts 804 and 806 may have, for example, Figure 8 The identifiers 140, 142, and 144 are shown. In addition, instead of expanding the diameter of the annular portion 808, the diameter of the liquid delivery tube 802 may be reduced by the elastic force of the liquid delivery tube 802 and pushed into the annular portion 808. In this case, it is preferred that the diameter of the annular portion 808 is only slightly smaller than the outer diameter of the liquid delivery tube 802. In addition, the liquid delivery tube 802 and the annular portion 808 may be fixed to each other by bonding or welding.

[0137] In the embodiment, a mechanical identifier formed by a combination of two protrusions 146 and 148 in different shapes is exemplified as an identifier, and a mechanical reading device represented by a micro switch 166 is exemplified as a reading device, but other identifiers and reading devices may also be applied.

[0138] (Example 1)

[0139] For example, as the identifier, an identifier having magnetic identification information may be used, and as the identifier recognition means, a reading device that magnetically reads the magnetic identification information may be used.

[0140] In addition to the connector 104, an identifier having magnetic identification information may be installed on the liquid delivery tube 302, for example. Depending on the method of using the identifier having magnetic identification information, the degree of freedom of installation of the magnetic identification information and the reading device can be increased. For example, when the identifier having magnetic identification information is installed on the liquid delivery tube 302, it is suitable to install the reading device in the rotor accommodation chamber 85 so that the identifier of the liquid delivery tube 302 and the reading device can be close to each other.

[0141] The identifier having magnetic identification information may be, for example, a magnetic tape on which magnetic information indicating the types of the liquid delivery tubes 302 to 702 is magnetically written. The reading device may be, for example, a magnetic information reading device having a magnetic head capable of reading the magnetic information.

[0142] (Example 2)

[0143] Furthermore, as the identifier, an identifier having electrical identification information may be used, and as the identifier recognition means, a reading device for electrically reading the magnetic identification information may be used.

[0144] In addition to the connector 104, an identifier having electrical identification information may be mounted on the liquid delivery tube 302, for example. Depending on the manner in which the identifier having electrical identification information is used, the degree of freedom in mounting the electrical identification information and the reading device can be increased. For example, when the identifier having electrical identification information is mounted on the liquid delivery tube 302, it is possible to place the identifier of the liquid delivery tube 302 and the reading device close to each other by mounting the reading device in the rotor accommodation chamber 85, which is suitable.

[0145] In addition, as an identifier having electrical identification information, an RFID (Radio Frequency Identifier) ​​tag having an IC (Integrated Circuit) chip storing electronic information indicating the type of the liquid delivery tube 302 to 702 can be exemplified. As a reading device, an electrical information reading device having a reader / writer capable of reading the above electronic information can be exemplified.

[0146] (Example 3)

[0147] Furthermore, as the identifier, an identifier having optical identification information may be used, and as the identifier recognition means, a reading device for optically reading the optical identification information may be used.

[0148] In addition to the connector 104, an identifier having optical identification information may be mounted on, for example, the liquid delivery tube 302. Depending on the method of using the identifier having optical identification information, the degree of freedom of mounting the optical identification information and the reading device can be increased. For example, when the identifier having optical identification information is mounted on the liquid delivery tube 302, it is suitable that the identifier of the liquid delivery tube 302 and the reading device can be brought close by mounting the reading device in the rotor accommodation chamber 85. Furthermore, the rotor accommodation chamber 85 is shielded from light by the cover 84, so that the optical identification information can be read without being affected by external light.

[0149] As an identifier having optical identification information, a geometric pattern such as a barcode, color code or dot code indicating the type of the liquid delivery tube 302 to 702 can be exemplified, and as a reading device, an optical information reading device having an imaging element such as a laser or CCD (Charge Coupled Device) that can read the geometric pattern can be exemplified. The geometric pattern can also be installed on the liquid delivery tube 302 to 702.

[0150] As mentioned above, although this invention was demonstrated, this invention is not limited to the said example, It is a matter of course that various improvements and deformation|transformation are possible within the range which does not deviate from the main point of this invention.

Claims

1. A liquid supply device for an endoscope, comprising a liquid supply device body, wherein a liquid supply tube is wound around a rotor having a plurality of rollers on the outer periphery, and the rotor is rotated to flatten the liquid supply tube with the rollers to deliver liquid, wherein: The liquid delivery pipe has: A winding portion, wound around the rotor; a first stopper portion provided closer to the liquid supply side than the winding portion and protruding in a tube radial direction orthogonal to the tube axial direction of the liquid supply tube; and The second stopper is arranged closer to the liquid supply side than the winding portion and protrudes in the radial direction of the tube. The liquid delivery device body comprises: a first limiting portion engaging with the first stopper portion to limit a position of the first stopper portion; and a second limiting portion engaging with the second stopper portion to limit the position of the second stopper portion, At least one of the first stopper and the second stopper has a pair of stopper pieces that are separated and arranged in the axial direction of the tube. The limiting portion of the first limiting portion and the second limiting portion corresponding to the one stopper portion has an engaging portion that engages with the pair of stopper pieces to limit the bidirectional movement of the one stopper portion in the axial direction of the tube. The first stopper has a first shaft portion along the tube axial direction and a pair of first stopper pieces that are separated and arranged in the tube axial direction with the first shaft portion interposed therebetween. The second stopper has a second shaft portion along the tube axial direction and a pair of second stopper pieces that are separated and arranged in the tube axial direction with the second shaft portion interposed therebetween. The first limiting portion has a first groove which is embedded in the first shaft portion. The second limiting portion has a second groove that is embedded in the second shaft portion. The first shaft portion and the second shaft portion have different diameters from each other, The first groove and the second groove are formed to have widths corresponding to diameters of the first shaft portion and the second shaft portion, respectively.

2. The liquid supply device for an endoscope according to claim 1, wherein: The first groove is formed in a U shape, and the second groove is formed in an L shape.

3. The liquid supply device for an endoscope according to claim 1 or 2, wherein: The liquid delivery device body includes a housing case defining a rotor housing chamber capable of housing the rotor. The housing case includes the first restricting portion and the second restricting portion.

4. The liquid supply device for an endoscope according to claim 3, wherein: The housing case has a cover capable of opening and closing the rotor housing chamber. The cap has a pressing piece protruding toward one of the first limiting portion and the second limiting portion, and the pressing piece presses the first stopper portion or the second stopper portion restricted by the one limiting portion to restrict radial movement of the pipe.

5. The liquid supply device for an endoscope according to claim 1 or 2, wherein: The liquid delivery pipe has a first joint connected to a first pipe serving as a liquid delivery side. The first joint has the first stopper.

6. The liquid supply device for an endoscope according to claim 5, wherein: The first tube has a first connection portion connectable to a liquid supply line provided in an endoscope or a treatment instrument at an end portion on the opposite side to the first joint.

7. The liquid supply device for an endoscope according to claim 1 or 2, wherein: The liquid delivery pipe has a second joint connected to a second pipe serving as a liquid supply side. The second joint has the second stopper.

8. The liquid supply device for an endoscope according to claim 7, wherein: The second tube has a second connection portion connectable to a tank storing a liquid at an end portion on the opposite side to the second joint.

9. The liquid supply device for an endoscope according to claim 1 or 2, wherein: The liquid delivery pipe has a first stopper forming member integrally connected to the liquid delivery pipe, The first stopper portion is formed on the first stopper forming member.

10. The liquid supply device for an endoscope according to claim 1 or 2, wherein: The liquid delivery pipe has a second stopper forming member integrally connected to the liquid delivery pipe, The second stopper portion is formed on the second stopper forming member.

11. A liquid delivery tube used in a liquid delivery device for an endoscope having a liquid delivery device body, wherein the liquid delivery tube is wound around a rotor having a plurality of rollers on the outer periphery, and the rotor is rotated to flatten the liquid delivery tube with the rollers to deliver liquid, the liquid delivery tube comprising: A winding portion, wound around the rotor; a first stopper portion provided closer to the liquid supply side than the winding portion and protruding in a tube radial direction orthogonal to the tube axial direction of the liquid supply tube; and The second stopper is arranged closer to the liquid supply side than the winding portion and protrudes in the radial direction of the tube. The liquid delivery device body is provided with a first limiting portion and a second limiting portion, The first stopper engages with the first limiting portion, thereby limiting the position of the first stopper. The second stopper engages with the second limiting portion, thereby limiting the position of the second stopper. At least one of the first stopper and the second stopper has a pair of stopper pieces that are separated and arranged in the axial direction of the tube. The one stopper is engaged with one of the first limiting portion and the second limiting portion corresponding to the one stopper through the pair of stopper pieces, thereby limiting the bidirectional movement of the tube axial direction in the one stopper. The first stopper has a first shaft portion along the tube axial direction and a pair of first stopper pieces that are separated and arranged in the tube axial direction with the first shaft portion interposed therebetween. The second stopper has a second shaft portion along the tube axial direction and a pair of second stopper pieces that are separated and arranged in the tube axial direction with the second shaft portion interposed therebetween. The first limiting portion has a first groove which is embedded in the first shaft portion. The second limiting portion has a second groove that is embedded in the second shaft portion. The first shaft portion and the second shaft portion have different diameters from each other, The first groove and the second groove are formed to have widths corresponding to diameters of the first shaft portion and the second shaft portion, respectively.

12. The liquid delivery tube according to claim 11, wherein: The first groove is formed in a U shape, and the second groove is formed in an L shape.

13. The liquid delivery tube according to claim 11 or 12, wherein: The liquid delivery pipe has a first joint connected to a first pipe serving as a liquid delivery side. The first joint has the first stopper.

14. The liquid delivery tube according to claim 13, wherein: The first tube has a first connection portion connectable to a liquid supply line provided in an endoscope or a treatment instrument at an end portion on the opposite side to the first joint.

15. The liquid delivery tube according to claim 11 or 12, wherein: The liquid delivery pipe has a second joint connected to a second pipe serving as a liquid supply side. The second joint has the second stopper.

16. The liquid delivery tube according to claim 15, wherein: The second tube has a second connection portion connectable to a tank storing a liquid at an end portion on the opposite side to the second joint.

17. The liquid delivery tube according to claim 11 or 12, wherein: The liquid delivery pipe has a first stopper forming member integrally connected to the liquid delivery pipe, The first stopper portion is formed on the first stopper forming member.

18. The liquid delivery tube according to claim 11 or 12, wherein: The liquid delivery pipe has a second stopper forming member integrally connected to the liquid delivery pipe, The second stopper portion is formed on the second stopper forming member.

19. A liquid delivery device body, wherein a liquid delivery tube is wound around a rotor having a plurality of rollers on the outer periphery, and the rotor is rotated to flatten the liquid delivery tube with the rollers to deliver liquid, the liquid delivery device body comprising: a first restricting portion that engages with a first stopper portion that is provided closer to the liquid supply side than a winding portion of the rotor wound around the liquid supply pipe, thereby restricting a position of the first stopper portion; and The second restricting portion engages with a second stopper portion provided closer to the liquid supply side than the winding portion of the liquid supply tube, thereby restricting the position of the second stopper portion. At least one of the first stopper and the second stopper has a pair of stopper pieces that are spaced apart from each other in the axial direction of the liquid delivery tube. The limiting portion of the first limiting portion and the second limiting portion corresponding to the one stopper portion has an engaging portion that engages with the pair of stopper pieces to limit the bidirectional movement of the one stopper portion in the axial direction of the tube. The first stopper has a first shaft portion along the tube axial direction and a pair of first stopper pieces that are separated and arranged in the tube axial direction with the first shaft portion interposed therebetween. The second stopper has a second shaft portion along the tube axial direction and a pair of second stopper pieces that are separated and arranged in the tube axial direction with the second shaft portion interposed therebetween. The first limiting portion has a first groove which is embedded in the first shaft portion. The second limiting portion has a second groove that is embedded in the second shaft portion. The first shaft portion and the second shaft portion have different diameters from each other, The first groove and the second groove are formed to have widths corresponding to diameters of the first shaft portion and the second shaft portion, respectively.

20. The liquid delivery device body according to claim 19, wherein: The first groove is formed in a U shape, and the second groove is formed in an L shape.

21. The liquid delivery device body according to claim 19 or 20, wherein: The liquid delivery device body includes a housing case defining a rotor housing chamber capable of housing the rotor. The housing case includes the first restricting portion and the second restricting portion.

22. The liquid delivery device body according to claim 21, wherein: The housing case has a cover capable of opening and closing the rotor housing chamber. The cover has a pressing piece protruding toward any one of the first limiting portion and the second limiting portion, and the pressing piece presses the first stopper portion or the second stopper portion restricted by the one limiting portion to restrict movement in a tube radial direction orthogonal to the tube axial direction of the liquid delivery tube.

Images