Endoscope liquid delivery device, liquid delivery tube and liquid delivery device body

Abstract

The present invention provides a liquid feeding device for an endoscope, a liquid feeding tube, and a liquid feeding device body that can improve convenience. The liquid feeding device for an endoscope has a liquid feeding device body (16) to which multiple types of liquid feeding tubes (302-702) are connected in a replaceable manner, the liquid feeding tubes have identifiers (140-144) for identifying the types of the liquid feeding tubes, and the liquid feeding device body (16) has: a pump (94) for feeding liquid to a liquid-fed portion via the liquid feeding tubes; a micro switch (166) for identifying the identifiers (140-144); and a control circuit (150) for changing the operating conditions of the pump (94) according to the identifiers (140-144) identified by the micro switch (166), and setting the flow rate of the liquid fed to the liquid-fed portion for each type of liquid feeding tube.

Description

Technical Field

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

[0002] Conventionally, in the field of endoscopy, liquids are supplied to the body under observation using a liquid delivery line, such as a treatment instrument insertion channel or a water jet, inserted through the interior of the endoscope. For example, Patent Document 1 discloses an endoscope liquid delivery device for delivering liquid to such a liquid delivery line. This endoscope liquid delivery device wraps a liquid delivery line around the outer periphery of a rotor, and the rotor is rotated to flatten a portion of the liquid delivery line with rollers disposed on the outer periphery of the rotor, thereby delivering liquid to the liquid delivery line.

[0003] Furthermore, the endoscope liquid supply device of Patent Document 1 includes a flow rate adjustment knob, and the amount of liquid supplied to the liquid supply line can be adjusted by operating the flow rate adjustment knob.

[0004] Patent Document 1: Japanese Patent Application Laid-Open No. 2006-325814

[0005] Liquid supply lines (such as treatment instrument insertion channels and water spray pipes) that are liquid supply destinations for liquid delivered from an endoscope liquid supply device generally have different inner diameters due to usage, purpose, or design restrictions.

[0006] Furthermore, the liquid supply line of a treatment instrument such as a high-frequency scalpel with a water supply function may also sometimes be the destination of liquid delivered from the endoscope liquid supply device. Therefore, it is desirable that the endoscope liquid supply device be capable of connecting and using a plurality of different types of liquid supply tubes, for example, with different inner diameters, in a manner that allows for interchangeable use, depending on the type of liquid supply line serving as the liquid supply destination.

[0007] However, in the liquid supply device for an endoscope disclosed in Patent Document 1, when a desired liquid supply tube is connected from a plurality of types of liquid supply tubes for use, an operator such as a surgeon needs to operate a flow adjustment knob to adjust the liquid supply volume in order to set the liquid supply volume to be suitable for the type of liquid supply tube that is the liquid supply destination. This operation is relatively cumbersome and inconvenient for the operator. 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 that can improve convenience.

[0009] In order to achieve the purpose of the present invention, the liquid supply device for endoscope of the present invention has a liquid supply device main body to which multiple types of liquid supply tubes are connected in a replaceable manner. In the liquid supply device for endoscope, the liquid supply tube has an identifier for identifying the type of the liquid supply tube, and the liquid supply device main body has: a pump that supplies liquid to a liquid-supplied portion via the liquid supply tube; an identifier recognition mechanism that identifies the identifier; and a flow rate setting mechanism that changes the operating conditions of the pump according to the identifier recognized by the identifier recognition mechanism, thereby setting the flow rate of the liquid supplied to the liquid-supplied portion for each type of liquid supply tube.

[0010] In one embodiment of the liquid supply device for an endoscope of the present invention, the flow rate setting mechanism preferably sets the flow rate of the liquid to a different flow rate range for each type of liquid supply tube, and the liquid supply device for an endoscope has an adjustment mechanism that can manually adjust the flow rate of the liquid within the flow rate range set by the flow rate setting mechanism.

[0011] In one embodiment of the endoscope liquid supply device of the present invention, the pump preferably wraps the liquid supply tube around a rotor having a plurality of rollers on its outer periphery, and rotates the rotor to flatten the liquid supply tube with the rollers to deliver the liquid.

[0012] In one aspect of the liquid supply device for an endoscope of the present invention, preferably, the identifier has different mechanical identification information for each type of the liquid supply tube, and the identifier recognition mechanism is a mechanical reading device capable of mechanically reading the mechanical identification information.

[0013] In one aspect of the liquid supply device for an endoscope of the present invention, preferably, the identifier has different magnetic identification information for each type of the liquid supply tube, and the identifier recognition mechanism is a magnetic reader capable of magnetically reading the magnetic identification information.

[0014] In one aspect of the liquid supply device for an endoscope of the present invention, preferably, the identifier has different electrical identification information for each type of the liquid supply tube, and the identifier recognition mechanism is an electrical reading device capable of electrically reading the electrical identification information.

[0015] In one aspect of the liquid supply device for an endoscope of the present invention, preferably, the identifier has different optical identification information for each type of the liquid supply tube, and the identifier recognition mechanism is an optical reader capable of optically reading the optical identification information.

[0016] In one embodiment of the endoscope liquid supply device of the present invention, the liquid supply tube preferably includes at least one of a first joint connected to a first tube serving as a liquid supply side or a second joint connected to a second tube serving as a liquid supply side, and one joint preferably includes an identifier.

[0017] In one embodiment of the liquid supply device for an endoscope of the present invention, it is preferable that the portion to which liquid is supplied is a liquid supply conduit provided in an endoscope or a treatment instrument.

[0018] In order to achieve the purpose of the present invention, the liquid supply tube of the present invention is used in an endoscope liquid supply device having a liquid supply device main body to which multiple types of liquid supply tubes are connected in a replaceable manner, and liquid is supplied to the liquid-delivered part by a pump possessed by the liquid supply device main body. The liquid supply tube has an identifier for identifying the type of the liquid supply tube. When the liquid supply tube is connected to the liquid supply device main body, the identifier is set at a position that can be identified by an identifier identification mechanism possessed by the liquid supply device main body.

[0019] In one aspect of the liquid supply tube of the present invention, preferably, the identifier has different mechanical identification information for each type of the liquid supply tube, and the identifier recognition mechanism is a mechanical reading device capable of mechanically reading the mechanical identification information.

[0020] In one aspect of the liquid supply tube of the present invention, it is preferred that the identifier has different magnetic identification information for each type of the liquid supply tube, and the identifier recognition mechanism is a magnetic reader capable of magnetically reading the magnetic identification information.

[0021] In one aspect of the liquid supply tube of the present invention, it is preferred that the identifier has different electrical identification information for each type of the liquid supply tube, and the identifier recognition mechanism is an electrical reading device capable of electrically reading the electrical identification information.

[0022] In one aspect of the liquid supply tube of the present invention, it is preferred that the identifier has different optical identification information for each type of the liquid supply tube, and the identifier recognition mechanism is an optical reader capable of optically reading the optical identification information.

[0023] In one aspect of the liquid supply tube of the present invention, the portion to be supplied liquid is preferably a liquid supply conduit provided in an endoscope or a treatment instrument.

[0024] In order to achieve the purpose of the present invention, the liquid delivery device body of the present invention is connected to multiple types of liquid delivery tubes in a replaceable manner, and the liquid delivery tubes are provided with identifiers for identifying the types of the liquid delivery tubes. The liquid delivery device body comprises: a pump for delivering liquid to a liquid-delivered portion via the liquid delivery tube; an identifier recognition mechanism for identifying the identifier; and a flow setting mechanism for changing the operating conditions of the pump according to the identifier recognized by the identifier recognition mechanism, thereby setting the flow rate of the liquid delivered to the liquid-delivered portion for each type of liquid delivery tube.

[0025] In one embodiment of the liquid supply device body of the present invention, the flow rate setting mechanism preferably sets the flow rate of the liquid to a different flow rate range for each type of liquid supply tube, and the liquid supply device body is provided with an adjustment mechanism capable of manually adjusting the flow rate of the liquid within the flow rate range set by the flow rate setting mechanism.

[0026] In one embodiment of the liquid feeding device body of the present invention, the pump preferably wraps the liquid feeding tube around a rotor having a plurality of rollers on its outer circumference, and rotates the rotor to flatten the liquid feeding tube with the rollers to feed the liquid.

[0027] In one embodiment of the liquid supply device body of the present invention, the identifier preferably has different mechanical identification information for each type of the liquid supply tube, and the identifier recognition mechanism is a mechanical reading device capable of mechanically reading the mechanical identification information.

[0028] In one embodiment of the liquid supply device body of the present invention, the identifier preferably has different magnetic identification information for each type of the liquid supply tube, and the identifier recognition mechanism is a magnetic reader capable of magnetically reading the magnetic identification information.

[0029] In one embodiment of the liquid supply device body of the present invention, the identifier preferably has different electrical identification information for each type of the liquid supply tube, and the identifier recognition mechanism is an electrical reading device capable of electrically reading the electrical identification information.

[0030] In one embodiment of the liquid supply device body of the present invention, the identifier preferably has different optical identification information for each type of the liquid supply tube, and the identifier recognition mechanism is an optical reader capable of optically reading the optical identification information.

[0031] In one embodiment of the liquid supply device main body of the present invention, the portion to be supplied liquid is preferably a liquid supply conduit provided in an endoscope or a treatment instrument.

[0032] Effects of the Invention

[0033] According to the present invention, convenience can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is an overall configuration diagram showing the endoscope liquid supply device according to the embodiment together with the endoscope.

[0035] Figure 2 This is an explanatory diagram showing a tube unit connected to an endoscope and a treatment instrument.

[0036] Figure 3 This is a structural diagram of an endoscope system including an endoscope.

[0037] Figure 4 This is an overall perspective view of the liquid delivery device body.

[0038] Figure 5 This is an enlarged view of the main part of the liquid delivery device with the pump head cover opened.

[0039] Figure 6 It is a perspective view showing the structure of a pipe unit.

[0040] Figure 7 It is an enlarged perspective view of a main part showing the shape of the restricting portion.

[0041] Figure 8This is an explanatory diagram showing the structure of an identifier for identifying the type of a liquid supply tube.

[0042] Figure 9 This is a diagram showing the installation of the liquid delivery tube relative to the liquid delivery device body.

[0043] Figure 10 This is a control block diagram related to liquid delivery volume control by the liquid delivery device main body.

[0044] Figure 11 This is an explanatory diagram showing another example of identification information and a reading device.

[0045] Explanation of symbols:

[0046] 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 portion, 42-Soft portion, 44-Bending portion, 46-Front end portion, 46A-Front end surface, 48-Air and water supply channel, 50-Water spray pipe, 52-Disposal instrument insertion channel, 52A-Suction path, 52B-Disposal instrument insertion path, 54-Operation portion body, 56-Handling portion, 58-Anti-bending Tube, 60-universal cable, 62-connector device, 64-electrical connector, 66-connector for liquid supply, 68-air and water supply button, 70-suction button, 72-clamp channel, 74-liquid supply pipeline, 74A-base end opening, 76-angle button, 80-housing, 82-operation panel, 83-hinge part, 84-cover, 84A-upper side, 85-rotor storage chamber, 86-power switch, 87-power switch indicator light, 88-flow adjustment knob, 90-liquid supply pipe detection part, 90A-recess, 92-liquid supply pipe detection indicator light, 94-pump, 95-wall part, 96-motor, 98-rotor, 100-roller, 104-connector, 104A-back , 104B- convex portion, 106- connector, 108- stop portion, 108A- shaft portion, 110- stop portion, 110A- shaft portion, 112- limiting portion, 112A- groove, 114- limiting portion, 114A- groove, 116- housing, 116A- upper edge portion, 118- stopper, 120- extrusion 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 portion, 136- knob portion, 140- identifier, 142- identifier, 144- identifier, 146- protrusion, 1 48-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, 180-identifier, 182-reading device, 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. DETAILED DESCRIPTION

[0047] Hereinafter, embodiments of the liquid supply device for an endoscope, the liquid supply tube, and the liquid supply device main body according to the present invention will be described with reference to the accompanying drawings.

[0048] 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.

[0049] Figure 2 This diagram illustrates four different types of tube units 300, 400, 500, and 600 connected to the liquid supply line on the endoscope 12 side, and a tube unit 700 connected to the liquid supply line on the high-frequency knife 14 side, which serves as a treatment instrument. These tube units 300 to 700 are connected to the liquid supply device main body 16 that constitutes the endoscope liquid supply device 10 and can be replaced according to the purpose or use.

[0050] The endoscope liquid supply device 10 further includes a tank 18 containing a liquid such as physiological saline or a medical solution, which is detachably placed on a tank tray 20 provided on the liquid supply device body 16. The liquid supply device body 16 and the tube units 300 to 700 will be described later.

[0051] Next, regarding an example of the endoscope 12 connected to the endoscope liquid supply device 10, refer to Figure 3 Provide explanation.

[0052] Figure 3 1 is a block diagram of an endoscope system 30 including an endoscope 12. The endoscope system 30 includes the endoscope 12, an endoscope processor 32, and a display 36.

[0053] The endoscope 12 includes an operation portion 38 and an insertion portion 40 provided on the distal end side of the operation portion 38 and inserted into the body to be observed.

[0054] The insertion portion 40 has a soft portion 42, a curved portion 44 and a distal end portion 46 in order from the base end toward the distal end. Figure 3 The air and water supply channel 48, the water spray pipe 50, and the treatment instrument insertion channel 52 are shown in dashed lines. The air and water supply channel 48 is a pipeline that sprays liquid or gas through a nozzle (not shown) toward an observation window (not shown) provided on the front end surface 46A of the front end portion 46. The water spray pipe 50 is a liquid supply pipeline that supplies liquid to the subject, and the treatment instrument insertion channel 52 is a pipeline that supplies liquid to a treatment instrument inserted therethrough and to the subject.

[0055] The operating portion 38 includes an operating portion body 54 and a grip 56 connected to the operating portion body 54. The proximal end of the insertion portion 40 is connected to the distal end of the grip 56 via a bend prevention tube 58. The grip 56 is gripped by the operating surgeon during examination using the endoscope 12.

[0056] The operating unit main body 54 is equipped with a universal cable 60. A connector device 62 is provided at the distal end of the universal cable 60, which is connected to the endoscope processor 32. The endoscope processor 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. Furthermore, the image processing device 35 is connected to a display 36 that displays images processed by the image processing device 35. The endoscope system 30 has a structure in which power and optical signals are transmitted contactlessly between the endoscope 12 and the endoscope processor 32 via a connector portion formed by the connector device 62 and the processor-side connector 34A. Thus, light from the light source 34 is transmitted via an optical cable (not shown) and illuminated through an illumination window (not shown) provided on the distal end surface 46A of the distal end portion 46. The optical signal of the image read from the observation window is processed by the image processing device 35 and displayed as an image on the display 36.

[0057] Here, as Figure 2 As shown, a liquid supply connector 66 is provided in the connector device 62. The liquid supply connector 66 is connected to the 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 600 are replaceably connected to the liquid supply connector 66 shown.

[0058] Back to Figure 3 The operating unit main body 54 is provided with an air and water supply button 68 and a suction button 70. When the operating surgeon operates the air and water supply button 68, liquid or gas is supplied to the air and water supply channel 48, thereby spraying the liquid or gas toward the aforementioned observation window. Furthermore, when the operating surgeon operates the suction button 70, the liquid within the subject's body is suctioned through the distal opening of the treatment instrument insertion channel 52, which is located on the distal end surface 46A of the distal end portion 46.

[0059] The treatment instrument insertion channel 52 is branched into a suction path 52A and a treatment instrument insertion path 52B inside the grip portion 56. The suction path 52A is connected to a suction port (not shown) of the connector device 62 via a cylinder (not shown) of the suction button 70 and a universal cable 60, and a suction pump is connected to the suction port (not shown). Furthermore, the treatment instrument insertion path 52B is connected to a clamp port 72 protruding from the grip portion 56. In addition, a clamp port 72 is connected in a replaceable manner. Figure 2There are two types of pipe units 300 or pipe units 400 shown.

[0060] and, Figure 2 The high frequency knife 14 shown is Figure 3 The clamp opening 72 is introduced into the treatment instrument insertion channel 52 through the treatment instrument insertion channel 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 .

[0061] Back to Figure 3 The operation portion main body 54 is provided with a pair of angle knobs 76, 76 for performing a bending operation on the bending portion 44. The pair of angle knobs 76, 76 are provided on the same axis so as to be rotatable.

[0062] 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.

[0063] 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 connected to the liquid feeding device main body 16 and can be replaced according to the purpose or use.

[0064] Figure 4 It is an overall perspective view of the liquid feeding device main body 16 .

[0065] like Figure 4 As shown, the liquid delivery device body 16 includes a housing 80. A pump head cover (hereinafter referred to as the "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 located in predetermined positions on an operation panel 82 forming the front surface of the housing 80. Furthermore, the operation panel 82 is configured as an inclined surface facing diagonally upward.

[0066] Figure 5 It is an enlarged view of a 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 so as to be exposed.

[0067] like Figure 4 and Figure 5 As shown, the cover 84 is configured in an overall rectangular shape and is openably and closably mounted on the liquid-feeding device body 16 via hinges 83 , 83 provided on both left and right sides of the lower portion thereof.

[0068] like Figure 5The pump 94 is provided in the rotor accommodation chamber 85 exposed by opening the cover 84. The pump 94 has a DC brushless motor (refer to Figure 10 The pump 94 comprises a disc-shaped rotor 98 (hereinafter referred to as the "motor"). The motor 96 comprises a disc-shaped rotor 98 rotated by the motor 96, and three rollers 100, 100, 100 mounted at equal intervals on the outer periphery of the rotor 98. For this pump 94, the liquid supply tube of one tube unit selected from the five tube units 300 to 700 is fixed to the liquid supply device body 16 in a U-shaped state wound around the outer periphery of the rotor 98. The liquid supply tube will be described later.

[0069] 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 direction of the pump 94 by the motor 96. Figure 5 The rotor 98 rotates clockwise as indicated by arrow A. As a result, the flattened portion of the rotor 98 moves clockwise, thereby delivering the liquid in the liquid delivery tube to the liquid delivery portion. In this specification, the water spray tube 50, the treatment instrument insertion passage 52, and the liquid delivery conduit 74 are described as examples of the liquid delivery portion.

[0070] The endoscope liquid supply device 10 of the embodiment has the following structure in order to facilitate the attachment and detachment of the liquid supply tubes of the five types of tube units 300 to 700 to the liquid supply device main body 16. Figure 2 The description will be made with reference to the pipe unit 300 among the pipe units 300 to 700 shown.

[0071] 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 components of the pipe unit 300 are denoted by the same reference numerals, and description thereof will be omitted.

[0072] The pipe unit 300 has a pipe wound around the rotor 98 (refer to Figure 5 ). Liquid supply tube 302 is an elastic tube made of, for example, silicone rubber, and has a wrapping portion 303 that wraps around rotor 98 when wrapped around rotor 98. A joint 104 is provided at end 302A on the liquid supply side of liquid supply tube 302, and a joint 106 is provided at end 302B on the liquid supply side of liquid supply tube 302. Joint 104 is an example of a first joint, and joint 106 is an example of a second joint.

[0073] 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 pipe axial direction ( Figure 6 The direction of arrow B) is perpendicular to the pipe radial direction ( Figure 6 It protrudes in the direction of arrow C) and is formed into a flange shape.

[0074] And, as Figure 6 As shown, the stoppers 108, 110 have a Figure 6 Furthermore, the stopper portions 108 and 110 respectively have the shaft portions 108A and 110A clamped in the pipe axial direction ( Figure 6 A pair of stop pieces 118, 118 are separately arranged in the direction of arrow B).

[0075] On the other hand, Figure 5 As shown, the liquid feeding device body 16 is provided with: a limiting portion 112 and a stopper portion 108 (refer to Figure 6 ) engages to limit the position of the stopper portion 108; and the limiting portion 114, and the stopper portion 110 (reference Figure 6 ) engages to restrict the position of the stopper 110. These restricting portions 112, 114 are formed in a rectangular housing case 116 of the operation panel 82 and are provided separately from each other on an upper side 116A of the housing case 116 that defines the rotor housing chamber 85.

[0076] and, Figure 5 The restricting portions 112 and 114 shown have grooves 112A and 114A (see FIG. Figure 7 The grooves 112A and 114A are formed by cutting away a portion of the upper side portion 116A.

[0077] 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 .

[0078] 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 engages with the restricting portion 112 by pushing the shaft portion 108A into the groove 112A. Furthermore, the stopper 110 engages with the restricting portion 114 by pushing the shaft portion 110A into the groove 114A along the L-shape.

[0079] At this time, a pair of stopper pieces 118, 118 are respectively engaged with the upper side portion 116A, so that the tube axial direction ( Figure 6 The bidirectional movement of the liquid delivery pipe 302 in the direction of the arrow B) is restricted. This structure prevents the liquid delivery pipe 302 from moving in the axial direction (direction of the arrow B) when the rotor 98 rotates. Figure 6 The position of the liquid supply device 16 is not deviated from that of the liquid supply device 16, thereby achieving a stable liquid supply action based on the liquid supply device 16.

[0080] Furthermore, the diameters of the shaft portions 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 shaft portions 108A and 110A, respectively. By configuring the stoppers 108 and 110 and the restricting portions 112 and 114 in this manner, it is possible to prevent the stopper 108 from being incorrectly attached to the restricting portion 114 or the stopper 110 from being incorrectly attached to the restricting portion 112.

[0081] With the above-described structure, according to the endoscope liquid supply device 10 of the embodiment, the liquid supply tube 302 can be connected to the liquid supply device body 16 simply by winding the winding portion 303 around the outer periphery of the rotor 98 and engaging the stopper 108 with the restricting portion 112 and the stopper 110 with the restricting 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 restricting portion 112 and the stopper 110 from the restricting portion 114.

[0082] And, as Figure 5 As shown, the upper side 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 110 engaged with the groove 114A of the limiting portion 114. As a result, the pipe radial direction ( Figure 6 Movement (in the direction of arrow C) is restricted by the pressing piece 120. Therefore, when the lid 84 is closed, the stopper 110 remains engaged with the restricting portion 114. Furthermore, the pressing piece 120 is not limited to being located on the restricting portion 114 side; it may also be located on the restricting portion 112 side. Thus, similar to the restricting portion 114 side, when the lid 84 is closed, the stopper 108 remains engaged with the restricting portion 112.

[0083] and, Figure 6 The connectors 104 and 106 shown are configured as couplers for connecting pipes. A pipe 126 serving as a liquid supply is connected to the connector 104. The pipe 126 has a connecting pipe 127 at the end opposite to the connector 104. The connecting pipe 127 is detachably connected to the connector 104. Figure 2 The forceps opening 72 is shown. Furthermore, the tube units 400 to 700 also have the same tube 126. The tube 126 of the tube unit 400, the tubes 126 of the tube units 500 and 600, and the tube 126 of the tube unit 700 are detachably connected to the forceps opening 72, the liquid supply connector 66, and the proximal end opening 74A of the high-frequency knife 14 via connecting tubes 127. Here, the tube 126 is an example of a first tube, and the connecting tube 127 is an example of a first connecting portion.

[0084] And, in Figure 6The pipe 128 serving as the liquid supply side is connected to the connector 106 shown. The pipe 128 has a front end opening 129 at the end opposite to the connector 106. Figure 2 Connecting port 18A of tank 18 is shown inserted into tank 18 and positioned below the liquid level in tank 18. Tube units 400 to 700 also have similar tubes 128. Tube 128 of tube unit 400, tube units 500 and 600, and tube 128 of tube unit 700 each have distal end openings 129 inserted into tank 18 from connecting port 18A and positioned below the liquid level. Tube 128 is an example of a second tube, and distal end opening 129 is an example of a second connecting portion.

[0085] like Figure 6 As shown, connectors 104 and 106 each have a substantially rectangular parallelepiped connector body 130 and 132. Each connector body 130 and 132 includes a knob portion 134 and 136 having a pair of opposing knob surfaces 130A, 130A, 132A, and 132A. By providing these knob portions 134 and 136 on connectors 104 and 106, the stoppers 108 and 110 can be easily engaged with the restricting portions 112 and 114 by gripping the knob portions 134 and 136 with fingers.

[0086] Here, reference Figure 2 The pipe units 300 to 700 will be described.

[0087] As already described, tube units 300 and 400 are connected to the forceps opening 72. Tube unit 300 is a reusable type, sterilized and cleaned before use for each examination, while tube unit 400 is a disposable type, discarded after the examination. Furthermore, tube units 500 and 600 are connected to the liquid supply connector 66. Tube unit 500 is a reusable type, sterilized and cleaned before use for each examination, while tube unit 600 is a disposable type, discarded after the examination. Furthermore, tube unit 700 is connected to the proximal opening 74A of the high-frequency knife 14 and is a disposable type, discarded after the examination.

[0088] and, Figure 3 The illustrated treatment instrument insertion passage 52 has a larger inner diameter than the water spray pipe 50 and the liquid supply line 74, and therefore the liquid supply rate (ml / min) is set to be slightly higher than that of the water spray pipe 50 and the liquid supply line 74. For this reason, the inner diameters of the liquid supply pipes 302 and 402 of the tube units 300 and 400 are larger than the inner diameters of the liquid supply pipes 502, 602, and 702 of the tube units 500, 600, and 700.

[0089] 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.

[0090] Figure 8 8A shows an identifier 140 for identifying the liquid delivery tubes 302 and 402. Figure 8 8B shows an identifier 142 for identifying the liquid delivery tubes 502 and 602. Figure 8 FIG8C shows an identifier 144 for identifying the liquid delivery tube 702 .

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

[0092] Two protrusions 146 and 148 are provided on the back surface 104A of the connector 104, spaced apart from each other in the upper and lower portions, indicating that the identifier 140 is the identifier of the liquid supply tubes 302 and 402. Furthermore, a single protrusion 146 is provided on the upper portion 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, a single protrusion 148 is provided on the lower portion 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 Figure 9 As shown, when the liquid supply tube 302 (402, 502, 602, 702) is connected to the liquid supply device body 16, the identifiers 140, 142, and 144 are provided at positions where they can be recognized by the liquid supply tube detection unit 90. Then, by connecting the connector 104 to the liquid supply tube detection unit 90, the identifiers 140, 142, and 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 8 As 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 (refer to FIG. 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 supply tube detection portion 90.

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

[0096] like Figure 10As shown, the amount of liquid delivered by the liquid delivery device body 16 is controlled by a CPU (Central Processing Unit) 152 within a control circuit 150. The control circuit 150 includes multiple circuits such as a ROM (Read Only Memory) 154 for storing programs and a RAM (Random Access Memory) 156 for temporarily storing data.

[0097] ROM 154 stores data (flow rate range setting data) for setting the flow rate range of liquid for each type of liquid delivery tube based on a detection signal from a micro switch 166 described later. Power is supplied from AC / DC power supply 158 to each circuit provided in control circuit 150 .

[0098] Connected to the control circuit 150 are a lid opening / closing detection button 160 for detecting whether the lid 84 is open or closed, the foot switch 22, the flow rate adjustment knob 88, and a pump control circuit 162 for operating the pump 94 according to the operating position of the flow rate adjustment knob 88. The pump control circuit 162 includes a current switching circuit for switching the current flowing to the motor 96. As an example of this current switching circuit, a variable resistor 164 is used. Furthermore, the control circuit 150 activates each circuit when a signal indicating that the lid 84 is closed is output from the lid opening / closing detection button 160.

[0099] The control circuit 150 reads data from the ROM 154 based on the detection signal from the switch 166 and outputs the data to the pump control circuit 162, thereby setting the flow rate delivered by the pump 94 to a flow rate range corresponding to the type of liquid delivery tube connected to the microswitch 166. Furthermore, the control circuit 150 adjusts the flow rate within the aforementioned flow rate range based on the operating position of the flow adjustment knob 88. Specifically, the flow adjustment knob 88 can be operated within an operating range of 0 to 100%. For example, when the flow adjustment knob is in the 50% operating position, the control circuit 150 sets the rotation speed of the rotor 98 to deliver liquid at a flow rate in the middle of the aforementioned flow rate range. In other words, the control circuit 150 sets the delivery rate to the delivery rate (ratio relative to the flow rate range) corresponding to the operating position of the flow adjustment knob 88 within the set flow rate range. This allows the delivery rate (ratio relative to the flow rate range) to be achieved within the flow rate range set for each type of liquid delivery tube, corresponding to the operating position of the flow adjustment knob 88.

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

[0101] The micro switch 166 has a connection between the connector 104 and the liquid delivery tube detection unit 90 (refer to Figure 5 ) (reference Figure 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 signal to the control circuit 150.

[0102] To be specific, for example, when the connector 104 of the liquid supply tube 302 is connected to the liquid supply tube detection part 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 part 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, 400 ml / min to 700 ml / min. Then, within the set flow range, the liquid delivery amount is set to the liquid delivery amount corresponding to the operating position of the flow adjustment knob 88 (the ratio relative to the flow range). Thus, if the foot switch 22 is pressed, the rotor 98 rotates at a speed corresponding to the liquid delivery amount 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 applies when the joint 104 of the liquid supply tube 402 is connected to the liquid supply tube detection unit 90 .

[0105] When the connector 104 of the liquid supply tube 502 is connected, the actuator 168 is pressed by the protrusion 146, and a detection signal indicating that the actuator 168 is pressed is output from the terminal portion to the control circuit 150. As a result, the rotation speed range of the rotor 98 is set so that the liquid supply volume adjustable by the flow adjustment knob 88 falls within a flow range of, for example, 60 ml / min to 190 ml / min. Within the set flow range, the liquid supply volume is then set to the liquid supply volume (a ratio relative to the flow range) corresponding to the operating position of the flow adjustment knob 88.

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

[0107] When the connector 104 of the liquid supply tube 702 is connected, the actuator 170 is pressed by the protrusion 148, and a detection signal indicating that the actuator 170 is pressed is output from the terminal portion to the control circuit 150. As a result, the rotation speed range of the rotor 98 is set so that the liquid supply volume adjustable by the flow adjustment knob 88 falls within a flow range of, for example, 90 ml / min to 190 ml / min. Within the set flow range, the liquid supply volume is then set to the liquid supply volume (a ratio relative to the flow range) corresponding to the operating position of the flow adjustment knob 88.

[0108] In addition, the microswitch 166 and the control circuit 150 are examples of identifier recognition mechanisms. Furthermore, the microswitch 166 is an example of a mechanical reading device. Furthermore, the flow adjustment knob 88 is an example of an adjustment mechanism for manually adjusting the flow rate of the liquid within the above-mentioned flow range. Furthermore, the control circuit 150 is an example of a flow setting mechanism. That is, the control circuit 150 determines the type of liquid delivery tube based on the detection signal output from the microswitch 166 (i.e., the identifier recognized by the microswitch 166 and the control circuit 150 as the identifier recognition mechanism) and changes the operating conditions of the pump 94, thereby setting the flow rate of the liquid delivered to the liquid delivery portion for each type of liquid delivery tube.

[0109] Furthermore, the control circuit 150 controls the lighting of the liquid supply pipe detection indicator 92 based on the detection signal output from the micro switch 166 (i.e., the identifier recognized by the micro switch 166 as the identifier recognition mechanism and the control circuit 150). Specifically, when the connector 104 of the liquid supply pipes 302 and 402 is connected, the lamp 92A of the liquid supply pipe detection indicator 92 is lit (refer to Figure 5 ). When the joints 104 of the liquid supply pipes 502 and 602 are connected, the light 92B of the liquid supply pipe detection display light 92 is turned on (refer to Figure 5 ). Then, when the connector 104 of the liquid supply pipe 702 is connected, the light 92C of the liquid supply pipe detection display light 92 is turned on (refer to Figure 5 Thus, the operating surgeon can recognize the liquid supply tubes 302 to 702 connected to the liquid supply device body 16 simply by confirming that the lamps 92A, 92B, and 92C are lit.

[0110] Next, the operation of the endoscope liquid supply device 10 according to the embodiment will be described.

[0111] Hereinafter, a case where the tube unit 300 is selected and used among the tube units 300 to 700 will be described.

[0112] First, if Figure 5 As shown in FIG. 1 , the cover 84 of the liquid feeding device body 16 is opened to expose the rotor 98. Next, the winding portion 303 (refer to FIG. 1 ) of the liquid feeding 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 .

[0113] Next, the connector 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. Figure 9 As shown in FIG, the connector 104 is pushed toward the liquid supply tube detection portion 90. Thus, the connector 104 can be connected to the liquid supply tube detection portion 90 easily and reliably.

[0114] 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 main body 16.

[0115] at this time, Figure 5 The extrusion piece 120 shown in FIG. 110 presses the shaft portion 110A of the stopper portion 110 toward the groove 114A to limit the tube radial direction of the stopper portion 110 ( Figure 6 Thus, the stopper 110 can be prevented from moving in the pipe radial direction ( Figure 6 The position of the limiting portion 114 is deviated from the direction of the arrow C. Figure 7 The operation of connecting the connector 104 to the liquid supply tube detection portion 90 may be performed before the operation of engaging the stopper portion 108 with the restriction portion 112 .

[0116] Furthermore, in the liquid delivery pipe 302, the pipe 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 pipe 302 is not affected by the axial direction of the pipe ( Figure 6 The position of the liquid supply device body 16 is connected to prevent excessive stress (excessive tension) (in the direction of arrow B) from being applied. By providing the stopper 108 and the stopper 110 at such a position, so that the stopper 108 engages with the restricting portion 112 and the stopper 110 engages with the restricting portion 114, the length and position of the winding portion 303 of the liquid supply tube 302 can be appropriately adjusted. This facilitates adjustment of the length and position of the winding portion 303 and reduces fluctuations in the liquid supply volume by the pump 94, thereby achieving stable liquid supply operation by the liquid supply device body 16.

[0117] Next, Figure 6The connecting tube 127 of the tube 126 is connected to the clamp port 72, and the front end opening 129 of the tube 128 is inserted into the tank 18 through the connecting port 18A of the tank 18 so that it is below the liquid level. This completes the preparation for delivering the liquid in the tank 18 to the treatment instrument insertion channel 52.

[0118] Next, the power switch 86 is pressed to start the liquid feeding device body 16. As a result, the power switch indicator light 87 is lit. Also, at this time, the cover 84 is closed, so Figure 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 identifies 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 becomes within the flow range from 400 ml / min to 700 ml / min. Furthermore, the control circuit 150 sets the rotation speed of the rotor 98 in such a manner as to deliver liquid at a flow rate within the above-mentioned flow range according to the operating position of the flow adjustment knob 88. Furthermore, at this time, the control circuit 150 lights up the light 92A of the liquid delivery tube detection display light 92 (reference Figure 5 ).

[0119] 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 operating position of the flow adjustment knob 88. Thus, liquid can be delivered to the treatment instrument insertion channel 52 within the flow range corresponding to the liquid delivery tube 302. Then, when it is desired to fine-tune the liquid delivery amount, the flow adjustment knob 88 is operated. Thus, the liquid delivery amount can be fine-tuned without exceeding the set flow range. Furthermore, the same operation occurs when the tube unit 400 is fixed to the liquid delivery device body 16.

[0120] On the other hand, when the tube unit 500 is secured to the liquid supply device body 16, the control circuit 150 recognizes that the liquid supply tube 502 is connected to the liquid supply device body 16 based on the detection signal from the microswitch 166, and identifies the liquid supply tube. The control circuit 150 then reads data from the ROM 154 for setting the liquid flow rate range to the flow rate range corresponding to the liquid supply tube 502 and outputs the data to the pump control circuit 162. This sets the rotor 98's rotation speed range to ensure that the liquid supply volume falls within the flow rate range of 60 ml / min to 190 ml / min. Furthermore, the control circuit 150 sets the rotor 98's rotation speed so that liquid is delivered within this flow rate range based on the operating position of the flow adjustment knob 88. At this time, the control circuit 150 illuminates the lamp 92B of the liquid supply tube detection indicator 92 based on the detection signal.

[0121] Next, when 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 operating position of the flow adjustment knob 88. This allows liquid to be delivered to the water spray pipe 50 within the flow range corresponding to the liquid delivery pipe 502. To fine-tune the liquid delivery amount, the flow adjustment knob 88 is operated. This allows fine adjustments to be made to the liquid delivery amount without exceeding the set flow range. The same operation also occurs when the tube unit 600 is fixed to the liquid delivery device body 16.

[0122] When the tube unit 700 is secured to the liquid supply device body 16, the control circuit 150 recognizes that the liquid supply device body 16 is connected to the liquid supply tube 702 based on a detection signal from the microswitch 166, identifying the liquid supply tube. The control circuit 150 then reads data from the ROM 154 for setting the liquid flow rate range to the flow rate range corresponding to the liquid supply tube 702 and outputs the data to the pump control circuit 162. This sets the rotor 98's rotation speed range to ensure that the liquid supply volume falls within the flow rate range of 90 ml / min to 190 ml / min. Furthermore, the control circuit 150 sets the rotor 98's rotation speed so that liquid is delivered within this flow rate range based on the operating position of the flow adjustment knob 88. At this point, the control circuit 150 illuminates the lamp 92C of the liquid supply tube detection indicator 92 based on the detection signal.

[0123] Then, when 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 operating position of the flow adjustment knob 88. This allows liquid to be delivered to the liquid delivery line 74 within the flow range corresponding to the liquid delivery tube 702. To fine-tune the liquid delivery amount, the flow adjustment knob 88 is operated. This allows fine adjustments to be made to the liquid delivery amount without exceeding the set flow range.

[0124] Thus, according to the endoscope liquid supply device 10 of the embodiment, when the liquid supply tubes 302 to 702 are replaced with liquid supply tubes 302 to 702 of different types, the liquid supply amount can be automatically changed to the liquid supply amount corresponding to the replaced liquid supply tubes 302 to 702 .

[0125] Therefore, according to the embodiment, the liquid supply device 10 for an endoscope includes the microswitch 166 and the control circuit 150 for identifying the identifiers 140 to 144 for identifying the types of the liquid supply tubes 302 to 702, and the control circuit 150 for changing the operating conditions of the pump 94 according to the identifiers 140 to 144 identified by the microswitch 166 and the control circuit 150 (that is, according to the types of the liquid supply tubes 302 to 702), thereby setting the flow rate of the liquid to be supplied to the liquid-supplied portion for each type of the liquid supply tubes 302 to 702. Therefore, convenience can be improved.

[0126] Furthermore, according to the endoscope liquid supply device 10 of the embodiment, the liquid flow rate can be manually adjusted using the flow rate adjustment knob 88 within the flow rate range set by the control circuit 150 for each type of liquid supply tube. This allows for fine adjustments to the liquid supply amount without exceeding the flow rate range set for each type of liquid supply tube.

[0127] In the embodiment, the mechanical identifier is exemplified by a combination of two protrusions 146 and 148 having different shapes, and the micro switch 166 is exemplified as the mechanical reader. However, other mechanical identifiers and mechanical readers may also be applied.

[0128] For example, other mechanical identification information may be mechanical identification information such as recesses or holes, and the mechanical reading device may be a mechanical reading device that reads the mechanical identification information such as recesses or holes.

[0129] Furthermore, the identification information and the reading device for reading the identification information may be information and devices other than mechanical identification information and mechanical reading devices.

[0130] (Example 1)

[0131] For example, Figure 11 As shown in the connector 104, an identifier 180 having magnetic identification information can also be provided on the back side 104A of the connector 104, and Figure 11 The liquid delivery tube detection unit 90 shown is provided with a reading device 182 for magnetically reading the magnetic identification information.

[0132] In addition to the connector 104, the identifier 180 can also be attached to the liquid supply tube 302, for example. Using an identifier with magnetic identification information increases the flexibility of mounting the magnetic identification information and the reader. For example, attaching the identifier 180 with magnetic identification information to the liquid supply tube 302 is advantageous because the reader 182 can be installed within the rotor housing chamber 85, allowing the identifier 180 on the liquid supply tube 302 to be brought into close proximity with the reader 182.

[0133] The identifier having magnetic identification information may be, for example, a magnetic tape on which magnetic information indicating the types of the liquid feeding tubes 302 to 702 is magnetically written. The reader 182 may be, for example, a magnetic information reader having a magnetic head capable of reading the magnetic information.

[0134] (Example 2)

[0135] Furthermore, an identifier 180 having electrical identification information may be provided on the back surface 104A of the connector 104 , and a reader 182 for electrically reading the electrical identification information may be provided on the liquid delivery tube detection section 90 .

[0136] In addition to the connector 104, the identifier 180 can also be attached to the liquid supply tube 302, for example. Using an identifier with electrical identification information increases the flexibility of mounting the electrical identification information and the reader. For example, attaching the identifier 180 with electrical identification information to the liquid supply tube 302 is advantageous because the reader 182 can be installed within the rotor housing chamber 85, allowing the identifier 180 on the liquid supply tube 302 to be brought into close proximity with the reader 182.

[0137] Alternatively, an example of an identifier containing electrical identification information may be an RFID (Radio Frequency Identifier) ​​tag having an IC (Integrated Circuit) chip storing electronic information indicating the type of the liquid delivery tubes 302 to 702. An example of the reader 182 may be an electrical information reader having a reader / writer capable of reading this electronic information.

[0138] (Example 3)

[0139] Furthermore, an identifier 180 having optical identification information may be provided on the back surface 104A of the connector 104 , and a reader 182 for optically reading the optical identification information may be provided in the liquid feeding tube detection section 90 .

[0140] In addition to the connector 104, the identifier 180 can also be attached to, for example, the liquid supply tube 302. Using an identifier with optical identification information increases the flexibility of mounting the optical identification information and the reader. For example, mounting the identifier 180 with optical identification information on the liquid supply tube 302 is advantageous because the reader 182 can be installed within the rotor housing chamber 85, placing the identifier 180 on the liquid supply tube 302 and the reader 182 close together. Furthermore, since the rotor housing chamber 85 is shielded from light by the cover 84, the optical identification information can be read without being affected by external light.

[0141] As an identifier having optical identification information, a geometric pattern such as a bar code, color code or dot code indicating the type of the liquid delivery tubes 302 to 702 can be exemplified. As the reading device 182, an optical information reading device having an imaging element such as a laser or CCD (Charge Coupled Device) that can read the above-mentioned geometric pattern can be exemplified.

[0142] In addition, in the embodiment, as an example of the liquid-delivered portion, a water spray pipe 50, a treatment instrument insertion channel 52, and a liquid delivery pipeline 74 are illustrated, but it is not limited thereto. It may also be other liquid delivery pipelines provided in the endoscope or a liquid delivery pipeline of a treatment instrument other than a high-frequency knife, or it may be a liquid delivery pipeline other than an endoscope and a treatment instrument.

[0143] In the embodiment, the connectors 104 and 106 are provided, but at least one connector may be provided, and the one connector may have an identifier.

[0144] And, 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 FIG. Figure 5 ) and is arranged to be movable vertically between an extended position (not shown) in which the winding portion 303 is sandwiched between the roller 100 and the wall portion 95 in conjunction with the closing action of the lid 84. Therefore, when the lid 84 is closed, the winding portion 303 of the liquid supply tube 302 is sandwiched between the roller 100 and the wall portion 95.

[0145] Furthermore, in the embodiment, a pump 94 is exemplified as a pump in which liquid supply tubes 302 to 702 are wound around the outer periphery of a rotating rotor 98. However, any pump capable of delivering liquid through the liquid supply tubes 302 to 702 is applicable. For example, when a rotary pump is used as the pump, multiple liquid supply tubes of different types are connected to the discharge port of the rotary pump in a replaceable manner.

[0146] The present invention has been described above, but the present invention is not limited to the above examples, and various improvements and modifications can of course be made without departing from the spirit of the present invention.

Claims

1. A liquid supply device for an endoscope, comprising a liquid supply device body to which a plurality of types of liquid supply tubes are replaceably connected, the liquid supply device body including a rotor around which the liquid supply tubes are wound, wherein: The liquid delivery pipe has: a connector provided at one end of the liquid delivery tube and engaged and retained on the liquid delivery device body when the liquid delivery tube is wound around the rotor; and an identifier, which is provided on the joint and is used to identify the type of the liquid delivery tube; The main body of the liquid delivery device is equipped with: a pump, delivering liquid to a liquid-delivered portion via the liquid-delivering pipe; an identifier recognition mechanism for recognizing the identifier; and The flow rate setting means changes the operating conditions of the pump according to the identifier recognized by the identifier recognition means, thereby setting the flow rate of the liquid to be delivered to the liquid receiving portion for each type of the liquid delivery tube.

2. The liquid supply device for an endoscope according to claim 1, wherein The connector includes a stopper engaged with the liquid-feeding device body.

3. The liquid supply device for an endoscope according to claim 2, wherein: The liquid supply device body includes an engaged portion provided at a position where the identifier recognition mechanism is provided. The joint has a clamping portion which is separately provided with the stopping portion and is clamped with the clamped portion.

4. The liquid supply device for an endoscope according to any one of claims 1 to 3, wherein The flow rate setting mechanism sets the flow rate of the liquid to a different flow rate range for each type of the liquid delivery tube. The liquid supply device for an endoscope includes an adjustment mechanism capable of manually adjusting the flow rate of the liquid within the flow rate range set by the flow rate setting mechanism.

5. The liquid supply device for an endoscope according to any one of claims 1 to 3, wherein The rotor has a plurality of rollers on its outer periphery. The pump rotates the rotor to flatten the liquid delivery tube wound around the rotor with the roller to deliver liquid.

6. The liquid supply device for an endoscope according to any one of claims 1 to 3, wherein: The identifier has different mechanical identification information for each type of the liquid delivery tube. The identifier recognition mechanism is a mechanical reading device capable of mechanically reading the mechanical identification information.

7. The liquid supply device for an endoscope according to any one of claims 1 to 3, wherein: The identifier has different magnetic identification information for each type of the liquid delivery tube. The identifier recognition mechanism is a magnetic reading device capable of magnetically reading the magnetic identification information.

8. The liquid supply device for an endoscope according to any one of claims 1 to 3, wherein The identifier has different electrical identification information for each type of the liquid delivery tube. The identifier recognition mechanism is an electric reading device capable of electrically reading the electric identification information.

9. The liquid supply device for an endoscope according to any one of claims 1 to 3, wherein: The identifier has different optical identification information for each type of the liquid delivery tube. The identifier recognition mechanism is an optical reading device capable of optically reading the optical identification information.

10. The liquid supply device for an endoscope according to any one of claims 1 to 3, wherein: The liquid delivery pipe has at least one of a first joint connected to a first pipe serving as a liquid delivery side and a second joint connected to a second pipe serving as a liquid supply side. The one connector has the identifier.

11. The liquid supply device for an endoscope according to any one of claims 1 to 3, wherein: The liquid-sent portion is a liquid-sent pipeline provided on an endoscope or a treatment instrument.

12. A liquid supply tube for use in an endoscope liquid supply device having a liquid supply device body to which a plurality of types of liquid supply tubes are replaceably connected, wherein the liquid supply device body includes a rotor around which the liquid supply tubes are wound, and a pump provided in the liquid supply device body supplies liquid to a liquid-supplied portion. The liquid delivery pipe has: a connector provided at one end of the liquid delivery tube and engaged and retained on the liquid delivery device body when the liquid delivery tube is wound around the rotor; and an identifier, which is provided on the joint and is used to identify the type of the liquid delivery tube; When the connector is connected to the liquid supply device body, the identifier is provided at a position where it can be identified by an identifier identification mechanism provided in the liquid supply device body.

13. The liquid delivery tube according to claim 12, wherein: The connector includes a stopper engaged with the liquid-feeding device body.

14. The liquid delivery tube according to claim 13, wherein: The liquid supply device body includes an engaged portion provided at a position where the identifier recognition mechanism is provided. The joint has a clamping portion which is separately provided with the stopping portion and is clamped with the clamped portion.

15. The liquid delivery tube according to any one of claims 12 to 14, wherein: The identifier has different mechanical identification information for each type of the liquid delivery tube. The identifier recognition mechanism is a mechanical reading device capable of mechanically reading the mechanical identification information.

16. The liquid delivery tube according to any one of claims 12 to 14, wherein: The identifier has different magnetic identification information for each type of the liquid delivery tube. The identifier recognition mechanism is a magnetic reading device capable of magnetically reading the magnetic identification information.

17. The liquid delivery tube according to any one of claims 12 to 14, wherein: The identifier has different electrical identification information for each type of the liquid delivery tube. The identifier recognition mechanism is an electric reading device capable of electrically reading the electric identification information.

18. The liquid delivery tube according to any one of claims 12 to 14, wherein: The identifier has different optical identification information for each type of the liquid delivery tube. The identifier recognition mechanism is an optical reading device capable of optically reading the optical identification information.

19. The liquid delivery tube according to any one of claims 12 to 14, wherein: The liquid-sent portion is a liquid-sent pipeline provided on an endoscope or a treatment instrument.

20. A liquid supply device body to which multiple types of liquid supply tubes are replaceably connected, comprising a rotor around which the liquid supply tubes are wound, the liquid supply tubes having: a connector provided at one end of the liquid supply tube and engaged and retained in the liquid supply device body when the liquid supply tubes are wound around the rotor; and an identifier provided on the connector for identifying the type of the liquid supply tube, the liquid supply device body comprising: a pump, configured to deliver the liquid to the delivered portion via the liquid delivery pipe; an identifier recognition mechanism for recognizing the identifier; as well as The flow rate setting means changes the operating conditions of the pump according to the identifier recognized by the identifier recognition means, thereby setting the flow rate of the liquid to be delivered to the liquid receiving portion for each type of the liquid delivery tube.

21. The liquid delivery device body according to claim 20, wherein: The liquid feeding device body includes a restriction portion that engages with a stopper portion provided on the joint to restrict a position of the stopper portion.

22. The liquid delivery device body according to claim 21, wherein: The liquid supply device body includes an engaged portion provided at a position where the identifier recognition mechanism is provided. The engaged portion is engaged with an engaging portion separately provided with the stopping portion at the joint.

23. The liquid feeding device body according to any one of claims 20 to 22, wherein: The flow rate setting mechanism sets the flow rate of the liquid to a different flow rate range for each type of the liquid delivery tube. The liquid supply device body includes an adjustment mechanism capable of manually adjusting the flow rate of the liquid within the flow rate range set by the flow rate setting mechanism.

24. The liquid feeding device body according to any one of claims 20 to 22, wherein: The rotor has a plurality of rollers on its outer periphery. The pump rotates the rotor to flatten the liquid delivery tube wound around the rotor with the roller to deliver liquid.

25. The liquid feeding device body according to any one of claims 20 to 22, wherein: The identifier has different mechanical identification information for each type of the liquid delivery tube. The identifier recognition mechanism is a mechanical reading device capable of mechanically reading the mechanical identification information.

26. The liquid feeding device body according to any one of claims 20 to 22, wherein: The identifier has different magnetic identification information for each type of the liquid delivery tube. The identifier recognition mechanism is a magnetic reading device capable of magnetically reading the magnetic identification information.

27. The liquid feeding device body according to any one of claims 20 to 22, wherein: The identifier has different electrical identification information for each type of the liquid delivery tube. The identifier recognition mechanism is an electric reading device capable of electrically reading the electric identification information.

28. The liquid feeding device body according to any one of claims 20 to 22, wherein: The identifier has different optical identification information for each type of the liquid delivery tube. The identifier recognition mechanism is an optical reading device capable of optically reading the optical identification information.

29. The liquid feeding device body according to any one of claims 20 to 22, wherein: The liquid-sent portion is a liquid-sent pipeline provided on an endoscope or a treatment instrument.

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