WO2020013281A1 - Endoscopic perfusate circulation system - Google Patents

Endoscopic perfusate circulation system Download PDF

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Publication number
WO2020013281A1
WO2020013281A1 PCT/JP2019/027518 JP2019027518W WO2020013281A1 WO 2020013281 A1 WO2020013281 A1 WO 2020013281A1 JP 2019027518 W JP2019027518 W JP 2019027518W WO 2020013281 A1 WO2020013281 A1 WO 2020013281A1
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Prior art keywords
perfusate
endoscope
perfusion
circulation
circulation system
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PCT/JP2019/027518
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French (fr)
Japanese (ja)
Inventor
佳彦 平尾
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ニプロ株式会社
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Application filed by ニプロ株式会社 filed Critical ニプロ株式会社
Priority to JP2020530259A priority Critical patent/JP7409306B2/en
Publication of WO2020013281A1 publication Critical patent/WO2020013281A1/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/12—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with cooling or rinsing arrangements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes

Definitions

  • the present invention relates to a perfusion fluid circulation system for an endoscope.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2009-136380 (Patent Document 1) is a prior document that discloses an epidural cooling system in which a part of a perfusate circulation channel is formed in a catheter.
  • the epidural cooling system described in Patent Document 1 includes a cooling catheter, a pump, a heat exchanger, and a cooler.
  • the pipe is connected from the outlet of the heat exchanger to the inlet of the cooling catheter, and the pipe is connected from the outlet of the cooling catheter to the inlet of the heat exchanger.
  • the inlet of the cooling catheter and the outlet of the cooling catheter communicate in the cooling catheter. These form a circulation channel for the perfusate through the cooling catheter, the pump and the heat exchanger.
  • the perfusion solution is used as a refrigerant, and no consideration is given to circulating and using the perfusion solution used for endoscopic surgery.
  • the present invention has been made in view of the above problems, and an object of the present invention is to provide a perfusion solution circulation system for an endoscope, which allows circulation of a perfusion solution used for endoscopic surgery.
  • the perfusion liquid circulation system for an endoscope includes an endoscope, a circulation flow path, a filter, a pump, and a deaeration unit.
  • the circulation channel is connected to the endoscope.
  • the circulation channel absorbs the perfusate sent from the endoscope to the outside, and makes it available for circulation.
  • the filter is provided in the circulation channel.
  • the filter filters the perfusate.
  • the pump is provided in the circulation channel.
  • the pump circulates the perfusate.
  • the deaeration unit is provided in the circulation channel.
  • the degassing unit degass the perfusate.
  • the degassing unit has a net that prevents passage of foreign matter in the perfusate.
  • the degassing unit further has an inlet for the perfusate, an outlet for the perfusate, and a weir standing upright in the degasser. In the deaeration section, the inflow port is located on the opposite side of the outflow port with respect to the weir section.
  • the degassing unit further has a float air trap.
  • the perfusion liquid circulation system for an endoscope further includes a first liquid storage unit and a second liquid storage unit. The first liquid storage part and the second liquid storage part are provided in the circulation channel. The first liquid storage part and the second liquid storage part can store the perfusate.
  • an on-off valve is provided at a position between the first liquid storage part and the second liquid storage part in the circulation flow path.
  • a first pressure measuring device is provided at a position between the first liquid storage section and the endoscope in the circulation flow channel.
  • a second pressure measuring device is provided at a position between the deaeration section and the filter in the circulation flow path.
  • a flushing circuit for flushing the filter is connected to the filter.
  • the perfusate used for endoscopic surgery can be recycled.
  • FIG. 1 is a circuit diagram showing a configuration of an endoscope perfusate circulation system according to a first embodiment of the present invention. It is a front view showing the composition of the deaeration part with which the perfusate circulation system for endoscopes concerning Embodiment 1 of the present invention is provided. It is a front view showing the composition of the deaeration part with which the perfusate circulation system for endoscopes concerning Embodiment 2 of the present invention is provided. It is a front view showing the state before perfusion fluid flows in the deaeration part with which the perfusion fluid circulation system for endoscopes concerning Embodiment 2 of the present invention is provided. FIG.
  • FIG. 10 is a front view showing a state in which a perfusate flows in and a gas in a chamber is exhausted in a deaeration unit provided in the endoscope perfusion solution circulation system according to the second embodiment of the present invention. It is a front view showing the closed state in the deaeration part with which the perfusate circulation system for endoscopes concerning Embodiment 2 of the present invention is provided. It is a front view showing the state where it shifted to the open state from the closed state in the deaeration part with which the perfusate circulation system for endoscopes concerning Embodiment 2 of the present invention is provided.
  • FIG. 1 is a circuit diagram showing a configuration of an endoscope perfusate circulation system according to Embodiment 1 of the present invention.
  • FIG. 2 is a front view showing a configuration of a deaeration unit provided in the endoscope perfusate circulation system according to the first embodiment of the present invention.
  • the perfusate circulation system 100 for an endoscope includes an endoscope 110, a circulation channel 120, a pump 130, a deaerator 140. , A filter 150.
  • the endoscope 110 is provided with an objective lens 111, an injection nozzle 112 for spraying a perfusion liquid onto the objective lens 111 to wash the objective lens 111, and a suction unit 113 for sucking the injected perfusion liquid. .
  • the circulation channel 120 is connected to the endoscope 110. Specifically, one end of the circulation channel 120 is connected to the suction unit 113 of the endoscope 110, and the other end of the circulation channel 120 is connected to the ejection nozzle 112 of the endoscope 110. Thus, the circulation channel 120 absorbs the perfusate sent from the endoscope 110 to the outside, and makes the perfusion solution available for circulation.
  • the circulation channel 120 includes a first channel portion L1, a second channel portion L2, a third channel portion L3, a fourth channel portion L4, and a fifth channel portion L5. It is composed of
  • the pump 130 is provided in the first flow path portion L1 of the circulation flow path 120. Pump 130 circulates the perfusate.
  • the pump 130 is a rotary pump.
  • the pump 130 is not limited to a rotary pump, and may be a gear pump.
  • the degassing unit 140 is provided in the circulation flow channel 120.
  • the deaeration unit 140 is connected to the suction unit 113 of the endoscope 110 by the first flow path L1.
  • the degassing unit 140 degass the perfusate.
  • the configuration of the degassing unit 140 is not limited to the configuration described below, and is configured by, for example, a drip chamber capable of degassing the perfusate. Is also good.
  • the filter 150 is provided in the circulation channel 120.
  • the filter 150 is connected to the degassing unit 140 by the second flow path unit L2.
  • the filter 150 filters the perfusate.
  • the filter 150 has an activated carbon column, and direct hemoperfusion (DHP) is performed in the filter 150.
  • DHP direct hemoperfusion
  • the configuration of the filter 150 is not limited to the above configuration, and may be any configuration that can remove blood cells, bacteria, and the like from the perfusate.
  • the wastewater channel 121 through which the wastewater separated from the perfusate flows is connected to the filter 150.
  • a blood volume measuring unit 180 is provided in the waste liquid channel 121.
  • Blood volume measuring section 180 has an absorbance flow cell.
  • the blood volume measurement unit 180 measures the absorption spectrum of the blood in the waste liquid using an absorbance flow cell, thereby measuring the blood volume in the waste liquid.
  • the configuration of blood volume measuring section 180 is not limited to the above configuration, and may be any configuration that can measure the blood volume in the waste liquid.
  • the blood volume measurement unit 180 does not necessarily have to be provided.
  • the endoscope perfusate circulation system 100 further includes a first liquid storage unit 160 and a second liquid storage unit 161.
  • the first liquid storage section 160 and the second liquid storage section 161 are provided in the circulation channel 120.
  • the first liquid storage section 160 and the second liquid storage section 161 can store a perfusate.
  • an unused perfusion liquid such as saline or lactated Ringer's solution is stored in each of the first liquid storage section 160 and the second liquid storage section 161. I have.
  • the second liquid storage part 161 is connected to the filter 150 by the third flow path part L3.
  • the first liquid storage section 160 and the second liquid storage section 161 are connected to each other by a fourth flow path section L4.
  • the fourth flow path section L4 is provided with an on-off valve 129 for opening and closing the fourth flow path section L4. That is, the on-off valve 129 is provided at a position between the first liquid storage part 160 and the second liquid storage part 161 in the circulation flow channel 120.
  • the first liquid storage section 160 is connected to the ejection nozzle 112 of the endoscope 110 by a fifth flow path section L5. Note that the on-off valve 129 is not necessarily provided.
  • the endoscope perfusate circulation system 100 further includes a bubble detector 170.
  • the bubble detector 170 is provided in the circulation channel 120.
  • the bubble detector 170 is provided in the first flow path portion L1 and is configured integrally with the pump 130.
  • the bubble detector 170 detects that the perfusate flowing through the first flow path portion L1 contains bubbles, the driving of the pump 130 is stopped. Note that the bubble detector 170 does not necessarily have to be provided.
  • the deaeration unit 140 has an inflow port 142 for the perfusate, an outflow port 143 for the perfusion solution, and a weir 144 set up inside the deaeration unit 141.
  • the inflow port 142 is located on the opposite side of the outflow port 143 with respect to the weir section 144.
  • the degassing unit 140 has a chamber 141.
  • the chamber 141 is provided with an inlet 142 and an outlet 143.
  • the first flow path portion L1 is connected to the inflow port 142.
  • the outlet 143 is connected to the second flow path portion L2.
  • a weir portion 144 is provided on the bottom surface of the chamber 141 so as to separate the inflow port 142 side and the outflow port 143 side.
  • the perfusate 10 flowing from the inflow port 142 is stored in a region T ⁇ b> 1 on the inflow port 142 side divided by the weir 144, and the perfusate 10 that has overflowed beyond the weir 144 is discharged out of the chamber 141. Move to the region T2 on the 143 side.
  • the degassing unit 140 further has a net 145 that prevents passage of the foreign matter 11 in the perfusate 10.
  • the mesh portion 145 is arranged in a region T1 on the inflow port 142 side in the chamber 141.
  • the net portion 145 is disposed so as to face the bottom surface of the chamber 141.
  • the perfusate 10 flowing into the region T1 on the inlet 142 side in the chamber 141 passes through the net 145 and moves to the region T2 on the outlet 143 side.
  • foreign matter 11 such as blood clots or tissue fragments contained in the perfusion 10 is captured by the mesh 145.
  • An exhaust pipe 146 is provided above the chamber 141.
  • the exhaust pipe 146 is provided with an on-off valve 147 for opening and closing the exhaust pipe 146.
  • the on-off valve 147 When the on-off valve 147 is opened, the gas 12 separated from the perfusion liquid 10 in the chamber 141 is exhausted through the exhaust pipe 146, and the perfusion liquid 10 is degassed.
  • the reason why the perfusion solution 10 is degassed is that the endoscope 110 is removed from the catheter during the endoscopic operation, and it is necessary to remove air mixed in the perfusion solution at this time.
  • a photoelectric sensor 190 is detachably attached to the outer periphery of the chamber 141.
  • the photoelectric sensor 190 includes a low-order detection unit 191 and a high-order detection unit 192.
  • the photoelectric sensor 190 is electrically connected to the sequencer 193 by a wiring 194.
  • the sequencer 193 is electrically connected to the on-off valve 147 by the wiring 195.
  • the perfusion liquid 10 is discharged from the exhaust pipe 146.
  • the deaeration of the perfusate 10 can be continuously performed while suppressing the discharge of the perfusate.
  • the pump 130, the degassing unit 140, the filter 150, the first liquid storage unit 160, and the second liquid storage unit 161 are supported by the support 2.
  • the first liquid storage section 160 and the second liquid storage section 161 are suspended by an arm section 3 provided at the upper end of the column 2.
  • the first pressure measuring device 123 is provided at a position between the first liquid storage part 160 and the endoscope 110 in the circulation flow channel 120.
  • the first chamber 122 is provided in the fifth flow path portion L5.
  • the first chamber 122 is provided with a first pressure measuring device 123 for measuring the pressure in the first chamber 122.
  • the driving of the pump 130 stops.
  • the pump 130 can be driven. Note that the first pressure measuring device 123 does not necessarily have to be provided.
  • a second pressure measurement device 125 is provided at a position between the deaeration unit 140 and the filter 150 in the circulation flow channel 120. Specifically, a second chamber 124 is provided in the second flow path portion L2. The second chamber 124 is provided with a second pressure measuring device 125 for measuring the pressure in the second chamber 124.
  • the driving of the pump 130 stops.
  • the pump 130 can be driven. Note that the second pressure measuring device 125 is not necessarily provided.
  • a flushing circuit 151 for flushing the filter 150 is connected to the filter 150.
  • the flushing circuit 151 flushes the filter 150 by supplying the cleaning liquid to the filter 150 manually or automatically.
  • the flushing circuit 151 includes, for example, a prefilled syringe filled with a physiological saline as a cleaning liquid.
  • the flushing circuit 151 is automatically controlled, for example, the opening and closing of the clamp of the tube connecting the prefilled syringe and the filter 150 is automatically controlled. While the flushing circuit 151 is flushing the filter 150, the driving of the pump 130 is stopped. Note that the flushing circuit 151 is not necessarily provided.
  • the perfusate supplied from the first liquid storage unit 160 to the ejection nozzle 112 of the endoscope 110 through the fifth flow path L5 is sprayed onto the objective lens 111.
  • the pump 130 is driven in the direction indicated by the arrow 1 in FIG. 1, the perfusate sucked from the suction unit 113 of the endoscope 110 passes through the first flow path unit L1 and passes through the deaeration unit 140.
  • the gas flows from the inflow port 142 into a region T1 in the chamber 141 on the inflow port 142 side.
  • the perfusate 10 that has flowed into the region T1 on the inlet 142 side in the chamber 141 passes through the net 145 and rises in the chamber 141. At this time, the foreign matter 11 contained in the perfusate 10 is captured by the net 145 and removed from the perfusate 10. The perfusate 10 that has overflowed beyond the weir 144 flows into the region T2 on the outlet 143 side in the chamber 141. Thus, while the perfusate 10 flows through the chamber 141, the gas 12 in the perfusion solution 10 is separated, and the perfusion solution 10 is degassed.
  • the cleaned perfusate flows out into the third flow path section L3, and the perfusate that has passed through the third flow path section L3 is stored in the second storage section 161.
  • the waste liquid flows out into the waste liquid flow path 121, and the blood volume in the waste liquid is measured by the blood volume measurement unit 180.
  • the on-off valve 129 When the amount of the perfusate stored in the first storage unit 160 decreases and it becomes necessary to replenish the first storage unit 160 with the perfusion solution, the on-off valve 129 is opened, and the second storage unit is opened.
  • the perfusate stored in the liquid storage 161 is supplied to the first liquid storage 160 through the fourth flow path L4.
  • the on-off valve 129 may be configured to open and close in conjunction with the driving of the pump 130.
  • the driving of the pump 130 is temporarily stopped, and when the measured value of the first pressure measuring device 123 falls below the third threshold value, the pump 130 Is restarted.
  • the driving of the pump 130 is temporarily stopped.
  • the flushing circuit 151 is automatically controlled, the cleaning liquid is automatically supplied from the flushing circuit 151 to the filter 150 when the measured value of the second pressure measuring device 125 exceeds the second threshold value. Flushing is performed.
  • the flushing circuit 151 is manually controlled, a warning is issued when the measured value of the second pressure measuring device 125 exceeds the second threshold, so that the flushing circuit 151 supplies the cleaning liquid to the filter 150 manually. Then, the flushing of the filter 150 is performed. The cleaning liquid used for flushing flows out to the waste liquid channel 121. After the flushing of the filter 150 is completed, the driving of the pump 130 is restarted.
  • the perfusion solution circulation system 100 for an endoscope can circulate and use the perfusion solution used for endoscopic surgery. Thereby, the required amount of the perfusate can be reduced.
  • the perfusate is degassed by the degassing unit 140, even if the endoscope 110 is withdrawn from the catheter during the endoscopic operation and a large amount of air is sucked from the suction unit 113, Since the air mixed in the perfusate can be exhausted by the deaeration unit 140, the circulation use of the perfusate can be continued.
  • the degassing unit 140 is configured such that the perfusate 10 overflowing from the region T1 on the inlet 142 side over the weir 144 moves to the region T2 on the outlet 143 side.
  • the perfusion solution 10 can be stirred to effectively deaerate the perfusion solution 10.
  • the on-off valve 129 is provided in the fourth flow path section L4 connecting the first liquid storage section 160 and the second liquid storage section 161, only the unused perfusate is supplied to the circulation flow path 120. It is possible to selectively switch between a state in which a mixed solution of an unused perfusate and a regenerated perfusate is supplied to the circulation channel 120.
  • the blood volume measurement unit 180 By continuously measuring the blood volume in the waste liquid by the blood volume measurement unit 180, the amount of bleeding of the patient during the endoscopic operation can be monitored.
  • the first pressure measuring device 123 When the measured value of the first pressure measuring device 123 exceeds the first threshold value, the driving of the pump 130 is stopped, so that the pressure of the perfusate at the endoscopic surgical site is increased, so that the wound surface, particularly the rupture, It is possible to suppress the occurrence of water poisoning or abnormal blood electrolyte concentration due to inflow of the perfusate from the vein that has been made. Further, the first pressure measuring device 123 can manage an appropriate flow rate and flow pressure of the perfusate in the observation tissue of the endoscope.
  • the clogging of the filter 150 can be detected.
  • the endoscopic operation can be continued without replacing the filter 150.
  • the perfusate circulation system for an endoscope according to the second embodiment of the present invention mainly has a point that the deaeration unit has a float air trap, and the perfusion solution circulation system for an endoscope according to the first embodiment of the present invention. Since the configuration is different from the system 100, the description of the same configuration as that of the endoscope perfusate circulation system 100 according to the first embodiment of the present invention will not be repeated.
  • FIG. 3 is a front view showing a configuration of a deaeration unit provided in the perfusate circulation system for an endoscope according to the second embodiment of the present invention.
  • the deaeration unit 240 included in the perfusate circulation system for an endoscope according to the second embodiment of the present invention further includes a float air trap.
  • the degassing unit 240 is not provided with the photoelectric sensor 190, the sequencer 193, the on-off valve 147, the wiring 194, and the wiring 195 according to the first embodiment.
  • the float type air trap included in the deaeration unit 240 includes a spherical float 241, a valve body 242, a float guide 243, a valve box 244, a valve seat 245, and a valve body receiving unit 246.
  • the valve seat 245 has an opening 245h.
  • the valve seat 245 is connected to the lower end of the exhaust pipe 146 such that the opening 245h communicates with the inside of the exhaust pipe 146.
  • the valve box 244 has an annular outer shape.
  • the upper end of the valve box 244 is connected to the valve seat 245 so that the valve box 244 is covered by the valve seat 245.
  • An opening 244h is provided at the lower end of the valve box 244.
  • the opening 244h is formed in such a size that a lower end of a valve body 242 described later can pass through.
  • An annular valve body receiving portion 246 is fixed inside the valve box 244.
  • the float guide 243 has an annular outer shape.
  • the upper end of the float guide 243 is connected to the lower end of the valve box 244 so that the inside of the float guide 243 communicates with the inside of the valve box 244.
  • An opening 243h is provided at the lower end of the float guide 243.
  • the opening 243h is formed in such a size that the float 241 does not fall off.
  • the inside of the chamber 141 and the inside of the exhaust pipe 146 communicate with each other through an area Ta surrounded by the float guide 243, the valve box 244, and the valve seat 245.
  • the float 241 is arranged in the float guide 243.
  • the float 241 is provided so as to be able to move up and down according to the liquid level of the perfusion liquid 10 in the chamber 141.
  • the valve element 242 is arranged in the valve box 244.
  • the valve body 242 has a flange portion 242f and an upper end surface 242t.
  • the valve body 242 is inserted into the inside of the valve body receiving portion 246 from above, and the flange portion 242f is located on the valve body receiving portion 246.
  • the lower end 242 b of the valve body 242 contacts the float 241.
  • the valve element 242 is configured to be selectively movable between a closed state in which the upper end surface 242t closes the opening 245h by rising with the rise of the float 241 and an open state in which the upper end surface 242t does not close the opening 245h. Have been.
  • FIG. 4 is a front view showing a state before a perfusate flows in a degassing unit provided in the perfusate circulation system for an endoscope according to the second embodiment of the present invention.
  • the float 241 is It is supported by the float guide 243 while being positioned so as to close the opening 243h.
  • the valve body 242 is supported by the valve body receiving portion 246.
  • FIG. 5 is a front view showing a state in which the perfusate flows in and the gas in the chamber is exhausted in the deaeration unit provided in the endoscope perfusate circulation system according to the second embodiment of the present invention.
  • FIG. 6 is a front view showing a closed state of the deaeration unit provided in the endoscope perfusate circulation system according to the second embodiment of the present invention. As shown in FIG. 6, while the valve body 242 rises as indicated by the arrow 4 and the opening 245h is closed with the rise in the level of the perfusate 10, the gas 12 in the chamber 141 is closed. Not exhausted.
  • FIG. 7 is a front view showing a state in which the deaeration unit included in the perfusate circulation system for an endoscope according to the second embodiment of the present invention has shifted from a closed state to an open state.
  • the gas 12 in the chamber 141 increases in the closed state and the pressure of the gas 12 increases, the liquid level of the perfusate 10 is pushed down as shown in FIG.
  • the valve body 242 descends as shown by the arrow 5, so that the valve body 242 enters an open state in which the opening 245h is not closed.
  • the gas 12 in the chamber 141 is exhausted through the opening 245h and the exhaust tube 146.
  • the degassing unit 240 is automatically opened and closed according to the pressure of the gas 12 in the chamber 141 to perform exhaust.
  • the deaeration unit 240 since the deaeration unit 240 has a float air trap, it is necessary to provide electric devices such as the photoelectric sensor 190, the sequencer 193, and the on-off valve 147 as in the deaeration unit 140 according to the first embodiment. Therefore, the deaeration unit 240 can have a simple configuration.

Abstract

This endoscopic perfusate circulation system comprises: an endoscope (110); a circulation channel (120); a filter (150); a pump (130); and a degassing unit (140). The circulation channel (120) is connected to the endoscope (110). The circulation channel (120) absorbs a perfusate sent from the endoscope (110) to the outside and makes the same available for circulation. The filter (150) is provided to the circulation channel (120). The filter (150) filters the perfusate. The pump (130) is provided to the circulation channel (120). The pump (130) circulates the perfusate. The degassing unit (140) is provided to the circulation channel (120). The degassing unit (140) degasses the perfusate.

Description

内視鏡用潅流液循環システムPerfusion fluid circulation system for endoscope
　本発明は、内視鏡用潅流液循環システムに関する。 The present invention relates to a perfusion fluid circulation system for an endoscope.
　カテーテル内に潅流液循環流路の一部が形成されている硬膜外腔冷却システムを開示した先行文献として、特開２００９－１３６３８０号公報(特許文献１)がある。特許文献１に記載された硬膜外腔冷却システムは、冷却カテーテルと、ポンプと、熱交換器と、冷却機とを備える。 Japanese Patent Application Laid-Open No. 2009-136380 (Patent Document 1) is a prior document that discloses an epidural cooling system in which a part of a perfusate circulation channel is formed in a catheter. The epidural cooling system described in Patent Document 1 includes a cooling catheter, a pump, a heat exchanger, and a cooler.
　熱交換器の流出口から冷却カテーテルの流入口まで配管で接続されており、冷却カテーテルの流出口から熱交換器の流入口まで配管で接続されている。冷却カテーテルの流入口と冷却カテーテルの流出口とは、冷却カテーテル内で連通している。これらにより、冷却カテーテル、ポンプおよび熱交換器を経由する、潅流液の循環流路が形成されている。 The pipe is connected from the outlet of the heat exchanger to the inlet of the cooling catheter, and the pipe is connected from the outlet of the cooling catheter to the inlet of the heat exchanger. The inlet of the cooling catheter and the outlet of the cooling catheter communicate in the cooling catheter. These form a circulation channel for the perfusate through the cooling catheter, the pump and the heat exchanger.
特開２００９－１３６３８０号公報JP 2009-136380 A
　特許文献１に記載された硬膜外腔冷却システムにおいては、潅流液は冷媒として用いられており、内視鏡手術に用いられる潅流液を循環利用することについては考慮されていない。 外 In the epidural cooling system described in Patent Literature 1, the perfusion solution is used as a refrigerant, and no consideration is given to circulating and using the perfusion solution used for endoscopic surgery.
　本発明は上記の問題点に鑑みてなされたものであって、内視鏡手術に用いられる潅流液を循環利用可能とする、内視鏡用潅流液循環システムを提供することを目的とする。 The present invention has been made in view of the above problems, and an object of the present invention is to provide a perfusion solution circulation system for an endoscope, which allows circulation of a perfusion solution used for endoscopic surgery.
　本発明に基づく内視鏡用潅流液循環システムは、内視鏡と、循環流路と、ろ過器と、ポンプと、脱気部とを備える。循環流路は、内視鏡に接続されている。循環流路は、内視鏡から外部に送液された潅流液を吸液して循環利用可能とする。ろ過器は、循環流路に設けられている。ろ過器は、潅流液をろ過する。ポンプは、循環流路に設けられている。ポンプは、潅流液を循環させる。脱気部は、循環流路に設けられている。脱気部は、潅流液を脱気する。 The perfusion liquid circulation system for an endoscope according to the present invention includes an endoscope, a circulation flow path, a filter, a pump, and a deaeration unit. The circulation channel is connected to the endoscope. The circulation channel absorbs the perfusate sent from the endoscope to the outside, and makes it available for circulation. The filter is provided in the circulation channel. The filter filters the perfusate. The pump is provided in the circulation channel. The pump circulates the perfusate. The deaeration unit is provided in the circulation channel. The degassing unit degass the perfusate.
　本発明の一形態においては、脱気部は、潅流液中の異物の通過を妨げる網部を有する。
　本発明の一形態においては、脱気部は、潅流液の流入口、潅流液の流出口、および、脱気部内に立設された堰部をさらに有する。脱気部において、流入口は、堰部に対して、流出口とは反対側に位置している。 In one embodiment of the present invention, the degassing unit has a net that prevents passage of foreign matter in the perfusate.
In one embodiment of the present invention, the degassing unit further has an inlet for the perfusate, an outlet for the perfusate, and a weir standing upright in the degasser. In the deaeration section, the inflow port is located on the opposite side of the outflow port with respect to the weir section.
　本発明の一形態においては、脱気部は、フロート式エアトラップをさらに有する。
　本発明の一形態においては、内視鏡用潅流液循環システムは、第１貯液部および第２貯液部をさらに備える。第１貯液部および第２貯液部は、循環流路に設けられている。第１貯液部および第２貯液部は、潅流液を貯液可能である。 In one embodiment of the present invention, the degassing unit further has a float air trap.
In one embodiment of the present invention, the perfusion liquid circulation system for an endoscope further includes a first liquid storage unit and a second liquid storage unit. The first liquid storage part and the second liquid storage part are provided in the circulation channel. The first liquid storage part and the second liquid storage part can store the perfusate.
　本発明の一形態においては、循環流路における第１貯液部と第２貯液部との間の位置に、開閉弁が設けられている。 In one embodiment of the present invention, an on-off valve is provided at a position between the first liquid storage part and the second liquid storage part in the circulation flow path.
　本発明の一形態においては、循環流路における第１貯液部と内視鏡との間の位置に、第１圧力測定装置が設けられている。 In one embodiment of the present invention, a first pressure measuring device is provided at a position between the first liquid storage section and the endoscope in the circulation flow channel.
　本発明の一形態においては、循環流路における脱気部とろ過器との間の位置に、第２圧力測定装置が設けられている。 In one embodiment of the present invention, a second pressure measuring device is provided at a position between the deaeration section and the filter in the circulation flow path.
　本発明の一形態においては、ろ過器に、ろ過器をフラッシングするフラッシング回路が接続されている。 In one embodiment of the present invention, a flushing circuit for flushing the filter is connected to the filter.
　本発明によれば、内視鏡手術に用いられる潅流液を循環利用することができる。 According to the present invention, the perfusate used for endoscopic surgery can be recycled.
本発明の実施形態１に係る内視鏡用潅流液循環システムの構成を示す回路図である。FIG. 1 is a circuit diagram showing a configuration of an endoscope perfusate circulation system according to a first embodiment of the present invention. 本発明の実施形態１に係る内視鏡用潅流液循環システムが備える脱気部の構成を示す正面図である。It is a front view showing the composition of the deaeration part with which the perfusate circulation system for endoscopes concerning Embodiment 1 of the present invention is provided. 本発明の実施形態２に係る内視鏡用潅流液循環システムが備える脱気部の構成を示す正面図である。It is a front view showing the composition of the deaeration part with which the perfusate circulation system for endoscopes concerning Embodiment 2 of the present invention is provided. 本発明の実施形態２に係る内視鏡用潅流液循環システムが備える脱気部において、潅流液が流入する前の状態を示す正面図である。It is a front view showing the state before perfusion fluid flows in the deaeration part with which the perfusion fluid circulation system for endoscopes concerning Embodiment 2 of the present invention is provided. 本発明の実施形態２に係る内視鏡用潅流液循環システムが備える脱気部において、潅流液が流入してチャンバ内のガスが排気されている状態を示す正面図である。FIG. 10 is a front view showing a state in which a perfusate flows in and a gas in a chamber is exhausted in a deaeration unit provided in the endoscope perfusion solution circulation system according to the second embodiment of the present invention. 本発明の実施形態２に係る内視鏡用潅流液循環システムが備える脱気部における閉状態を示す正面図である。It is a front view showing the closed state in the deaeration part with which the perfusate circulation system for endoscopes concerning Embodiment 2 of the present invention is provided. 本発明の実施形態２に係る内視鏡用潅流液循環システムが備える脱気部において、閉状態から開状態に移行した状態を示す正面図である。It is a front view showing the state where it shifted to the open state from the closed state in the deaeration part with which the perfusate circulation system for endoscopes concerning Embodiment 2 of the present invention is provided.
　以下、本発明の各実施形態に係る内視鏡用潅流液循環システムについて図を参照して説明する。以下の実施形態の説明においては、図中の同一または相当部分には同一符号を付して、その説明は繰り返さない。 Hereinafter, the perfusate circulation system for an endoscope according to each embodiment of the present invention will be described with reference to the drawings. In the following description of the embodiments, the same or corresponding portions in the drawings have the same reference characters allotted, and description thereof will not be repeated.
　(実施形態１)
　図１は、本発明の実施形態１に係る内視鏡用潅流液循環システムの構成を示す回路図である。図２は、本発明の実施形態１に係る内視鏡用潅流液循環システムが備える脱気部の構成を示す正面図である。 (Embodiment 1)
FIG. 1 is a circuit diagram showing a configuration of an endoscope perfusate circulation system according to Embodiment 1 of the present invention. FIG. 2 is a front view showing a configuration of a deaeration unit provided in the endoscope perfusate circulation system according to the first embodiment of the present invention.
　図１および図２に示すように、本発明の実施形態１に係る内視鏡用潅流液循環システム１００は、内視鏡１１０と、循環流路１２０と、ポンプ１３０と、脱気部１４０と、ろ過器１５０とを備える。 As shown in FIGS. 1 and 2, the perfusate circulation system 100 for an endoscope according to the first embodiment of the present invention includes an endoscope 110, a circulation channel 120, a pump 130, a deaerator 140. , A filter 150.
　内視鏡１１０には、対物レンズ１１１と、対物レンズ１１１に潅流液を噴き付けて対物レンズ１１１を洗浄する噴射ノズル１１２と、噴射された潅流液を吸引する吸引部１１３とが設けられている。 The endoscope 110 is provided with an objective lens 111, an injection nozzle 112 for spraying a perfusion liquid onto the objective lens 111 to wash the objective lens 111, and a suction unit 113 for sucking the injected perfusion liquid. .
　循環流路１２０は、内視鏡１１０に接続されている。具体的には、循環流路１２０の一端が内視鏡１１０の吸引部１１３と接続されており、循環流路１２０の他端が内視鏡１１０の噴射ノズル１１２と接続されている。これにより、循環流路１２０は、内視鏡１１０から外部に送液された潅流液を吸液して循環利用可能とする。本実施形態においては、循環流路１２０は、第１流路部Ｌ１と、第２流路部Ｌ２と、第３流路部Ｌ３と、第４流路部Ｌ４と第５流路部Ｌ５とから構成されている。 The circulation channel 120 is connected to the endoscope 110. Specifically, one end of the circulation channel 120 is connected to the suction unit 113 of the endoscope 110, and the other end of the circulation channel 120 is connected to the ejection nozzle 112 of the endoscope 110. Thus, the circulation channel 120 absorbs the perfusate sent from the endoscope 110 to the outside, and makes the perfusion solution available for circulation. In the present embodiment, the circulation channel 120 includes a first channel portion L1, a second channel portion L2, a third channel portion L3, a fourth channel portion L4, and a fifth channel portion L5. It is composed of
　ポンプ１３０は、循環流路１２０の第１流路部Ｌ１に設けられている。ポンプ１３０は、潅流液を循環させる。本実施形態においては、ポンプ１３０は、ロータリポンプである。ただし、ポンプ１３０は、ロータリポンプに限られず、ギアポンプでもよい。 The pump 130 is provided in the first flow path portion L1 of the circulation flow path 120. Pump 130 circulates the perfusate. In the present embodiment, the pump 130 is a rotary pump. However, the pump 130 is not limited to a rotary pump, and may be a gear pump.
　脱気部１４０は、循環流路１２０に設けられている。脱気部１４０は、第１流路部Ｌ１によって、内視鏡１１０の吸引部１１３と接続されている。脱気部１４０は、潅流液を脱気する。本実施形態に係る脱気部１４０の詳細な構成については後述するが、脱気部１４０の構成は、後述する構成に限られず、たとえば、潅流液を脱気可能なドリップチャンバで構成されていてもよい。 The degassing unit 140 is provided in the circulation flow channel 120. The deaeration unit 140 is connected to the suction unit 113 of the endoscope 110 by the first flow path L1. The degassing unit 140 degass the perfusate. Although the detailed configuration of the degassing unit 140 according to the present embodiment will be described later, the configuration of the degassing unit 140 is not limited to the configuration described below, and is configured by, for example, a drip chamber capable of degassing the perfusate. Is also good.
　ろ過器１５０は、循環流路１２０に設けられている。ろ過器１５０は、第２流路部Ｌ２によって、脱気部１４０と接続されている。ろ過器１５０は、潅流液をろ過する。本実施形態においては、ろ過器１５０は、活性炭カラムを有し、ろ過器１５０において直接血液潅流(ＤＨＰ：direct　hemoperfusion)が行なわれる。ただし、ろ過器１５０の構成は、上記の構成に限られず、潅流液から血球および細菌などを除去可能な構成であればよい。 The filter 150 is provided in the circulation channel 120. The filter 150 is connected to the degassing unit 140 by the second flow path unit L2. The filter 150 filters the perfusate. In the present embodiment, the filter 150 has an activated carbon column, and direct hemoperfusion (DHP) is performed in the filter 150. However, the configuration of the filter 150 is not limited to the above configuration, and may be any configuration that can remove blood cells, bacteria, and the like from the perfusate.
　ろ過器１５０には、潅流液から分離された廃液が流れる廃液流路１２１が接続されている。本実施形態においては、廃液流路１２１には、血液量測定部１８０が設けられている。血液量測定部１８０は、吸光度フローセルを有する。血液量測定部１８０において、廃液中の血液の吸収スペクトラムを吸光度フローセルを用いて測定することにより、廃液中の血液量が測定される。なお、血液量測定部１８０の構成は、上記の構成に限られず、廃液中の血液量を測定可能な構成であればよい。また、血液量測定部１８０は、必ずしも設けられていなくてもよい。 The wastewater channel 121 through which the wastewater separated from the perfusate flows is connected to the filter 150. In the present embodiment, a blood volume measuring unit 180 is provided in the waste liquid channel 121. Blood volume measuring section 180 has an absorbance flow cell. The blood volume measurement unit 180 measures the absorption spectrum of the blood in the waste liquid using an absorbance flow cell, thereby measuring the blood volume in the waste liquid. The configuration of blood volume measuring section 180 is not limited to the above configuration, and may be any configuration that can measure the blood volume in the waste liquid. In addition, the blood volume measurement unit 180 does not necessarily have to be provided.
　本実施形態においては、内視鏡用潅流液循環システム１００は、第１貯液部１６０および第２貯液部１６１をさらに備える。第１貯液部１６０および第２貯液部１６１は、循環流路１２０に設けられている。第１貯液部１６０および第２貯液部１６１は、潅流液を貯液可能である。内視鏡用潅流液循環システム１００の稼働開始時には、第１貯液部１６０および第２貯液部１６１の各々には、生理食塩水または乳酸リンゲル液などの未使用の潅流液が貯液されている。 In the present embodiment, the endoscope perfusate circulation system 100 further includes a first liquid storage unit 160 and a second liquid storage unit 161. The first liquid storage section 160 and the second liquid storage section 161 are provided in the circulation channel 120. The first liquid storage section 160 and the second liquid storage section 161 can store a perfusate. When the operation of the endoscope perfusion liquid circulation system 100 is started, an unused perfusion liquid such as saline or lactated Ringer's solution is stored in each of the first liquid storage section 160 and the second liquid storage section 161. I have.
　第２貯液部１６１は、第３流路部Ｌ３によって、ろ過器１５０と接続されている。第１貯液部１６０と第２貯液部１６１とは、第４流路部Ｌ４によって互いに接続されている。第４流路部Ｌ４には、第４流路部Ｌ４を開閉する開閉弁１２９が設けられている。すなわち、循環流路１２０における第１貯液部１６０と第２貯液部１６１との間の位置に、開閉弁１２９が設けられている。第１貯液部１６０は、第５流路部Ｌ５によって、内視鏡１１０の噴射ノズル１１２と接続されている。なお、開閉弁１２９は、必ずしも設けられていなくてもよい。 The second liquid storage part 161 is connected to the filter 150 by the third flow path part L3. The first liquid storage section 160 and the second liquid storage section 161 are connected to each other by a fourth flow path section L4. The fourth flow path section L4 is provided with an on-off valve 129 for opening and closing the fourth flow path section L4. That is, the on-off valve 129 is provided at a position between the first liquid storage part 160 and the second liquid storage part 161 in the circulation flow channel 120. The first liquid storage section 160 is connected to the ejection nozzle 112 of the endoscope 110 by a fifth flow path section L5. Note that the on-off valve 129 is not necessarily provided.
　本実施形態においては、内視鏡用潅流液循環システム１００は、気泡検知器１７０をさらに備える。気泡検知器１７０は、循環流路１２０に設けられている。本実施形態においては、気泡検知器１７０は、第１流路部Ｌ１に設けられており、ポンプ１３０と一体に構成されている。第１流路部Ｌ１を流れる潅流液に気泡が含まれていることを気泡検知器１７０が検知したとき、ポンプ１３０の駆動が停止する。なお、気泡検知器１７０は、必ずしも設けられていなくてもよい。 In the present embodiment, the endoscope perfusate circulation system 100 further includes a bubble detector 170. The bubble detector 170 is provided in the circulation channel 120. In the present embodiment, the bubble detector 170 is provided in the first flow path portion L1 and is configured integrally with the pump 130. When the bubble detector 170 detects that the perfusate flowing through the first flow path portion L1 contains bubbles, the driving of the pump 130 is stopped. Note that the bubble detector 170 does not necessarily have to be provided.
　図２に示すように、脱気部１４０は、潅流液の流入口１４２、潅流液の流出口１４３、および、脱気部１４１内に立設された堰部１４４を有する。脱気部１４０において、流入口１４２は、堰部１４４に対して、流出口１４３とは反対側に位置している。 As shown in FIG. 2, the deaeration unit 140 has an inflow port 142 for the perfusate, an outflow port 143 for the perfusion solution, and a weir 144 set up inside the deaeration unit 141. In the degassing section 140, the inflow port 142 is located on the opposite side of the outflow port 143 with respect to the weir section 144.
　具体的には、脱気部１４０は、チャンバ１４１を有する。チャンバ１４１には、流入口１４２および流出口１４３が設けられている。流入口１４２には、第１流路部Ｌ１が接続されている。流出口１４３には、第２流路部Ｌ２が接続されている。チャンバ１４１の底面上に、流入口１４２側と流出口１４３側とを区切るように、堰部１４４が設けられている。 Specifically, the degassing unit 140 has a chamber 141. The chamber 141 is provided with an inlet 142 and an outlet 143. The first flow path portion L1 is connected to the inflow port 142. The outlet 143 is connected to the second flow path portion L2. A weir portion 144 is provided on the bottom surface of the chamber 141 so as to separate the inflow port 142 side and the outflow port 143 side.
　チャンバ１４１内において、流入口１４２から流入した潅流液１０は、堰部１４４によって区切られた流入口１４２側の領域Ｔ１に貯液され、堰部１４４を超えて溢れ出た潅流液１０が流出口１４３側の領域Ｔ２に移動する。 In the chamber 141, the perfusate 10 flowing from the inflow port 142 is stored in a region T <b> 1 on the inflow port 142 side divided by the weir 144, and the perfusate 10 that has overflowed beyond the weir 144 is discharged out of the chamber 141. Move to the region T2 on the 143 side.
　脱気部１４０は、潅流液１０中の異物１１の通過を妨げる網部１４５をさらに有する。網部１４５は、チャンバ１４１内の流入口１４２側の領域Ｔ１に配置されている。網部１４５は、チャンバ１４１の底面と対向するように配置されている。チャンバ１４１内の流入口１４２側の領域Ｔ１に流入した潅流液１０は、網部１４５を通過して、流出口１４３側の領域Ｔ２に移動する。潅流液１０が網部１４５を通過する際に、潅流液１０中に含まれる血塊または組織片などの異物１１が網部１４５に捕捉される。 The degassing unit 140 further has a net 145 that prevents passage of the foreign matter 11 in the perfusate 10. The mesh portion 145 is arranged in a region T1 on the inflow port 142 side in the chamber 141. The net portion 145 is disposed so as to face the bottom surface of the chamber 141. The perfusate 10 flowing into the region T1 on the inlet 142 side in the chamber 141 passes through the net 145 and moves to the region T2 on the outlet 143 side. When the perfusate 10 passes through the mesh 145, foreign matter 11 such as blood clots or tissue fragments contained in the perfusion 10 is captured by the mesh 145.
　チャンバ１４１の上部には、排気筒１４６が設けられている。排気筒１４６には、排気筒１４６を開閉する開閉弁１４７が設けられている。開閉弁１４７が解放状態になることにより、チャンバ１４１内の潅流液１０から分離されたガス１２が排気筒１４６を通じて排気され、潅流液１０の脱気が行なわれる。潅流液１０の脱気を行なう理由は、内視鏡手術中に内視鏡１１０がカテーテルから抜かれる操作があり、このとき潅流液に混入した空気を除去する必要があるためである。 排 気 An exhaust pipe 146 is provided above the chamber 141. The exhaust pipe 146 is provided with an on-off valve 147 for opening and closing the exhaust pipe 146. When the on-off valve 147 is opened, the gas 12 separated from the perfusion liquid 10 in the chamber 141 is exhausted through the exhaust pipe 146, and the perfusion liquid 10 is degassed. The reason why the perfusion solution 10 is degassed is that the endoscope 110 is removed from the catheter during the endoscopic operation, and it is necessary to remove air mixed in the perfusion solution at this time.
　チャンバ１４１の外周部に、光電センサ１９０が着脱可能に取り付けられている。光電センサ１９０は、低位検知部１９１と高位検知部１９２とを含む。光電センサ１９０は、配線１９４によってシーケンサ１９３と電気的に接続されている。シーケンサ１９３は、配線１９５によって開閉弁１４７と電気的に接続されている。 光電 A photoelectric sensor 190 is detachably attached to the outer periphery of the chamber 141. The photoelectric sensor 190 includes a low-order detection unit 191 and a high-order detection unit 192. The photoelectric sensor 190 is electrically connected to the sequencer 193 by a wiring 194. The sequencer 193 is electrically connected to the on-off valve 147 by the wiring 195.
　開閉弁１４７が閉じた状態でチャンバ１４１内のガス１２の容量が増加すると潅流液１０の液面高さが低下する。光電センサ１９０の低位検知部１９１が潅流液１０の液面を検知した場合、シーケンサ１９３は開閉弁１４７を開放させる信号を開閉弁１４７に送信する。 (4) When the volume of the gas 12 in the chamber 141 increases while the on-off valve 147 is closed, the level of the perfusate 10 decreases. When the low level detection unit 191 of the photoelectric sensor 190 detects the liquid level of the perfusate 10, the sequencer 193 transmits a signal to open the on-off valve 147 to the on-off valve 147.
　開閉弁１４７が開放してチャンバ１４１内のガス１２が排気され、チャンバ１４１内の圧力が低下すると、潅流液１０の液面高さが上昇する。光電センサ１９０の高位検知部１９２が潅流液１０の液面を検知した場合、シーケンサ１９３は開閉弁１４７を閉鎖させる信号を開閉弁１４７に送信する。 (4) When the on-off valve 147 is opened and the gas 12 in the chamber 141 is exhausted and the pressure in the chamber 141 decreases, the liquid level of the perfusate 10 increases. When the high-level detection unit 192 of the photoelectric sensor 190 detects the liquid level of the perfusate 10, the sequencer 193 transmits a signal for closing the on-off valve 147 to the on-off valve 147.
　光電センサ１９０の低位検知部１９１および高位検知部１９２によって検知したチャンバ１４１内の潅流液１０の液面高さに基づいて開閉弁１４７の開閉状態を調節することにより、排気筒１４６から潅流液１０が噴き出ることを抑制しつつ、脱気部１４０において安定して潅流液１０の脱気を連続して行なうことができる。 By adjusting the open / close state of the on-off valve 147 based on the liquid level of the perfusion liquid 10 in the chamber 141 detected by the low-level detection unit 191 and the high-level detection unit 192 of the photoelectric sensor 190, the perfusion liquid 10 is discharged from the exhaust pipe 146. In the deaeration section 140, the deaeration of the perfusate 10 can be continuously performed while suppressing the discharge of the perfusate.
　ポンプ１３０、脱気部１４０、ろ過器１５０、第１貯液部１６０および第２貯液部１６１は、支柱２に支持されている。第１貯液部１６０および第２貯液部１６１は、支柱２の上端に設けられたアーム部３に吊り下げられている。 The pump 130, the degassing unit 140, the filter 150, the first liquid storage unit 160, and the second liquid storage unit 161 are supported by the support 2. The first liquid storage section 160 and the second liquid storage section 161 are suspended by an arm section 3 provided at the upper end of the column 2.
　本実施形態においては、循環流路１２０における第１貯液部１６０と内視鏡１１０との間の位置に、第１圧力測定装置１２３が設けられている。具体的には、第５流路部Ｌ５に第１チャンバ１２２が設けられている。第１チャンバ１２２に、第１チャンバ１２２内の圧力を測定する第１圧力測定装置１２３が設けられている。 In the present embodiment, the first pressure measuring device 123 is provided at a position between the first liquid storage part 160 and the endoscope 110 in the circulation flow channel 120. Specifically, the first chamber 122 is provided in the fifth flow path portion L5. The first chamber 122 is provided with a first pressure measuring device 123 for measuring the pressure in the first chamber 122.
　第１圧力測定装置１２３の測定値が第１閾値を超えた場合、ポンプ１３０の駆動が停止する。第１圧力測定装置１２３の測定値が第１閾値以下の場合に、ポンプ１３０が駆動可能である。なお、第１圧力測定装置１２３は、必ずしも設けられていなくてもよい。 駆 動 When the value measured by the first pressure measuring device 123 exceeds the first threshold, the driving of the pump 130 stops. When the measured value of the first pressure measuring device 123 is equal to or less than the first threshold, the pump 130 can be driven. Note that the first pressure measuring device 123 does not necessarily have to be provided.
　本実施形態においては、循環流路１２０における脱気部１４０とろ過器１５０との間の位置に、第２圧力測定装置１２５が設けられている。具体的には、第２流路部Ｌ２に第２チャンバ１２４が設けられている。第２チャンバ１２４に、第２チャンバ１２４内の圧力を測定する第２圧力測定装置１２５が設けられている。 In the present embodiment, a second pressure measurement device 125 is provided at a position between the deaeration unit 140 and the filter 150 in the circulation flow channel 120. Specifically, a second chamber 124 is provided in the second flow path portion L2. The second chamber 124 is provided with a second pressure measuring device 125 for measuring the pressure in the second chamber 124.
　第２圧力測定装置１２５の測定値が第２閾値を超えた場合、ポンプ１３０の駆動が停止する。第２圧力測定装置１２５の測定値が第２閾値以下の場合に、ポンプ１３０が駆動可能である。なお、第２圧力測定装置１２５は、必ずしも設けられていなくてもよい。 駆 動 When the measured value of the second pressure measuring device 125 exceeds the second threshold, the driving of the pump 130 stops. When the value measured by the second pressure measuring device 125 is equal to or less than the second threshold, the pump 130 can be driven. Note that the second pressure measuring device 125 is not necessarily provided.
　本実施形態においては、ろ過器１５０に、ろ過器１５０をフラッシングするフラッシング回路１５１が接続されている。フラッシング回路１５１は、手動または自動で洗浄液をろ過器１５０に供給することにより、ろ過器１５０をフラッシングする。フラッシング回路１５１は、たとえば、洗浄液として生理食塩水が充填されたプレフィルドシリンジを含む。フラッシング回路１５１が自動制御されている場合は、たとえば、プレフィルドシリンジとろ過器１５０とを接続するチューブのクランプの開閉が自動制御される。フラッシング回路１５１がろ過器１５０をフラッシングしている間は、ポンプ１３０の駆動が停止する。なお、フラッシング回路１５１は、必ずしも設けられていなくてもよい。 In the present embodiment, a flushing circuit 151 for flushing the filter 150 is connected to the filter 150. The flushing circuit 151 flushes the filter 150 by supplying the cleaning liquid to the filter 150 manually or automatically. The flushing circuit 151 includes, for example, a prefilled syringe filled with a physiological saline as a cleaning liquid. When the flushing circuit 151 is automatically controlled, for example, the opening and closing of the clamp of the tube connecting the prefilled syringe and the filter 150 is automatically controlled. While the flushing circuit 151 is flushing the filter 150, the driving of the pump 130 is stopped. Note that the flushing circuit 151 is not necessarily provided.
　以下、本発明の実施形態１に係る内視鏡用潅流液循環システム１００の動作について説明する。 Hereinafter, the operation of the perfusion liquid circulation system 100 for an endoscope according to the first embodiment of the present invention will be described.
　内視鏡１１０の使用が開始されると、第１貯液部１６０から第５流路部Ｌ５を通じて内視鏡１１０の噴射ノズル１１２に供給された潅流液が、対物レンズ１１１に噴き付けられる。ポンプ１３０が図１中の矢印１で示す方向に駆動することにより、内視鏡１１０の吸引部１１３から吸液された潅流液が、第１流路部Ｌ１を通過して脱気部１４０の流入口１４２からチャンバ１４１内の流入口１４２側の領域Ｔ１に流入する。 When the use of the endoscope 110 is started, the perfusate supplied from the first liquid storage unit 160 to the ejection nozzle 112 of the endoscope 110 through the fifth flow path L5 is sprayed onto the objective lens 111. When the pump 130 is driven in the direction indicated by the arrow 1 in FIG. 1, the perfusate sucked from the suction unit 113 of the endoscope 110 passes through the first flow path unit L1 and passes through the deaeration unit 140. The gas flows from the inflow port 142 into a region T1 in the chamber 141 on the inflow port 142 side.
　チャンバ１４１内の流入口１４２側の領域Ｔ１に流入した潅流液１０は、網部１４５を通過して、チャンバ１４１内を上昇する。このとき、潅流液１０に含まれていた異物１１が網部１４５に捕捉されて潅流液１０中から除去される。堰部１４４を超えて溢れ出た潅流液１０は、チャンバ１４１内の流出口１４３側の領域Ｔ２に流入する。このように、チャンバ１４１内を潅流液１０が流動する間に、潅流液１０中のガス１２が分離され、潅流液１０の脱気が行なわれる。 The perfusate 10 that has flowed into the region T1 on the inlet 142 side in the chamber 141 passes through the net 145 and rises in the chamber 141. At this time, the foreign matter 11 contained in the perfusate 10 is captured by the net 145 and removed from the perfusate 10. The perfusate 10 that has overflowed beyond the weir 144 flows into the region T2 on the outlet 143 side in the chamber 141. Thus, while the perfusate 10 flows through the chamber 141, the gas 12 in the perfusion solution 10 is separated, and the perfusion solution 10 is degassed.
　チャンバ１４１内の流出口１４３側の領域Ｔ２に流入した潅流液１０は、流出口１４３から第２流路部Ｌ２に流出する。第２流路部Ｌ２を通過してろ過器１５０に流入した潅流液は、ろ過器１５０にてろ過され、清浄になった潅流液と廃液とに分離される。清浄になった潅流液は第３流路部Ｌ３に流出し、第３流路部Ｌ３を通過した潅流液は、第２貯液部１６１に貯液される。廃液は廃液流路１２１に流出し、血液量測定部１８０にて廃液中の血液量が測定される。 The perfusate 10 that has flowed into the region T2 on the side of the outlet 143 in the chamber 141 flows out of the outlet 143 to the second flow path portion L2. The perfusate that has flowed into the filter 150 after passing through the second flow path section L2 is filtered by the filter 150 and separated into a clean perfusate and a waste liquid. The cleaned perfusate flows out into the third flow path section L3, and the perfusate that has passed through the third flow path section L3 is stored in the second storage section 161. The waste liquid flows out into the waste liquid flow path 121, and the blood volume in the waste liquid is measured by the blood volume measurement unit 180.
　第１貯液部１６０に貯液されている潅流液の量が減少し、第１貯液部１６０への潅流液の補充が必要になったとき、開閉弁１２９が開き、第２貯液部１６１に貯液されていた潅流液が第４流路部Ｌ４を通じて第１貯液部１６０に供給される。なお、開閉弁１２９は、ポンプ１３０の駆動と連動して開閉するように構成されていてもよい。 When the amount of the perfusate stored in the first storage unit 160 decreases and it becomes necessary to replenish the first storage unit 160 with the perfusion solution, the on-off valve 129 is opened, and the second storage unit is opened. The perfusate stored in the liquid storage 161 is supplied to the first liquid storage 160 through the fourth flow path L4. The on-off valve 129 may be configured to open and close in conjunction with the driving of the pump 130.
　第１圧力測定装置１２３の測定値が第１閾値を超えた場合、ポンプ１３０の駆動が一時的に停止し、第１圧力測定装置１２３の測定値が第３閾値以下まで下がった時に、ポンプ１３０の駆動が再開する。 When the measured value of the first pressure measuring device 123 exceeds the first threshold value, the driving of the pump 130 is temporarily stopped, and when the measured value of the first pressure measuring device 123 falls below the third threshold value, the pump 130 Is restarted.
　第２圧力測定装置１２５の測定値が第２閾値を超えた場合、ポンプ１３０の駆動が一時的に停止する。フラッシング回路１５１が自動制御されている場合は、第２圧力測定装置１２５の測定値が第２閾値を超えたときに、フラッシング回路１５１から自動でろ過器１５０に洗浄液が供給され、ろ過器１５０のフラッシングが行なわれる。フラッシング回路１５１が手動制御されている場合は、第２圧力測定装置１２５の測定値が第２閾値を超えたときに警告報知されることにより、フラッシング回路１５１から手動でろ過器１５０に洗浄液が供給され、ろ過器１５０のフラッシングが行なわれる。フラッシングに用いられた洗浄液は、廃液流路１２１に流出する。ろ過器１５０のフラッシングが終了した後、ポンプ１３０の駆動が再開する。 場合 When the measured value of the second pressure measuring device 125 exceeds the second threshold, the driving of the pump 130 is temporarily stopped. When the flushing circuit 151 is automatically controlled, the cleaning liquid is automatically supplied from the flushing circuit 151 to the filter 150 when the measured value of the second pressure measuring device 125 exceeds the second threshold value. Flushing is performed. When the flushing circuit 151 is manually controlled, a warning is issued when the measured value of the second pressure measuring device 125 exceeds the second threshold, so that the flushing circuit 151 supplies the cleaning liquid to the filter 150 manually. Then, the flushing of the filter 150 is performed. The cleaning liquid used for flushing flows out to the waste liquid channel 121. After the flushing of the filter 150 is completed, the driving of the pump 130 is restarted.
　上記のように、本実施形態に係る内視鏡用潅流液循環システム１００は、内視鏡手術に用いられる潅流液を循環利用することができる。これにより、潅流液の必要量を削減することができる。 As described above, the perfusion solution circulation system 100 for an endoscope according to the present embodiment can circulate and use the perfusion solution used for endoscopic surgery. Thereby, the required amount of the perfusate can be reduced.
　脱気部１４０によって潅流液の脱気を行なっているため、仮に、内視鏡手術中に内視鏡１１０がカテーテルから抜き去られて、吸引部１１３から大量の空気が吸い込まれた場合においても、潅流液中に混入した空気を脱気部１４０にて排出することができるため、潅流液の循環利用を継続することができる。 Since the perfusate is degassed by the degassing unit 140, even if the endoscope 110 is withdrawn from the catheter during the endoscopic operation and a large amount of air is sucked from the suction unit 113, Since the air mixed in the perfusate can be exhausted by the deaeration unit 140, the circulation use of the perfusate can be continued.
　流入口１４２側の領域Ｔ１から堰部１４４を超えて溢れ出た潅流液１０が流出口１４３側の領域Ｔ２に移動するように、脱気部１４０が構成されていることにより、脱気部１４０にて潅流液１０を撹拌して効果的に潅流液１０の脱気を行なうことができる。 The degassing unit 140 is configured such that the perfusate 10 overflowing from the region T1 on the inlet 142 side over the weir 144 moves to the region T2 on the outlet 143 side. The perfusion solution 10 can be stirred to effectively deaerate the perfusion solution 10.
　また、脱気部１４０の網部１４５にて潅流液中の異物１１を除去することにより、ろ過器１５０が目詰まりを起こすことを抑制でき、循環流路１２０における潅流液の円滑な循環を維持することができる。 In addition, by removing foreign matter 11 in the perfusate at the net 145 of the degassing unit 140, it is possible to suppress the filter 150 from being clogged, and to maintain a smooth circulation of the perfusate in the circulation channel 120. can do.
　第１貯液部１６０と第２貯液部１６１とを繋ぐ第４流路部Ｌ４に開閉弁１２９が設けられていることにより、未使用の潅流液のみを循環流路１２０に供給する状態と、未使用の潅流液と再生された潅流液との混合液を循環流路１２０に供給する状態とを、選択的に切り換えることが可能となる。 Since the on-off valve 129 is provided in the fourth flow path section L4 connecting the first liquid storage section 160 and the second liquid storage section 161, only the unused perfusate is supplied to the circulation flow path 120. It is possible to selectively switch between a state in which a mixed solution of an unused perfusate and a regenerated perfusate is supplied to the circulation channel 120.
　血液量測定部１８０にて廃液中の血液量を継続して測定することにより、内視鏡手術中の患者の出血量を監視することができる。 By continuously measuring the blood volume in the waste liquid by the blood volume measurement unit 180, the amount of bleeding of the patient during the endoscopic operation can be monitored.
　第１圧力測定装置１２３の測定値が第１閾値を超えた場合に、ポンプ１３０の駆動を停止させることによって、内視鏡手術部位における潅流液の圧力が高くなることによる、創表面、特に破綻した静脈から潅流液が流入して水中毒または血液電解質の濃度異常が発生することを抑制することができる。また、第１圧力測定装置１２３によって、内視鏡の観察組織内における潅流液の適正な流量および流圧を管理することができる。 When the measured value of the first pressure measuring device 123 exceeds the first threshold value, the driving of the pump 130 is stopped, so that the pressure of the perfusate at the endoscopic surgical site is increased, so that the wound surface, particularly the rupture, It is possible to suppress the occurrence of water poisoning or abnormal blood electrolyte concentration due to inflow of the perfusate from the vein that has been made. Further, the first pressure measuring device 123 can manage an appropriate flow rate and flow pressure of the perfusate in the observation tissue of the endoscope.
　第２圧力測定装置１２５の測定値を監視することにより、ろ過器１５０の詰まりを検知することができる。ろ過器１５０の詰まりを検知した際に、フラッシング回路１５１によってろ過器１５０をフラッシングすることにより、ろ過器１５０を交換することなく内視鏡手術を継続することが可能となる。 詰 By monitoring the measurement value of the second pressure measuring device 125, the clogging of the filter 150 can be detected. When the filter 150 is flushed by the flushing circuit 151 when the clogging of the filter 150 is detected, the endoscopic operation can be continued without replacing the filter 150.
　(実施形態２)
　以下、本発明の実施形態２に係る内視鏡用潅流液循環システムについて図を参照して説明する。なお、本発明の実施形態２に係る内視鏡用潅流液循環システムは、脱気部がフロート式エアトラップを有する点が主に、本発明の実施形態１に係る内視鏡用潅流液循環システム１００と異なるため、本発明の実施形態１に係る内視鏡用潅流液循環システム１００と同様である構成については説明を繰り返さない。 (Embodiment 2)
Hereinafter, a perfusate circulation system for an endoscope according to a second embodiment of the present invention will be described with reference to the drawings. The perfusate circulation system for an endoscope according to the second embodiment of the present invention mainly has a point that the deaeration unit has a float air trap, and the perfusion solution circulation system for an endoscope according to the first embodiment of the present invention. Since the configuration is different from the system 100, the description of the same configuration as that of the endoscope perfusate circulation system 100 according to the first embodiment of the present invention will not be repeated.
　図３は、本発明の実施形態２に係る内視鏡用潅流液循環システムが備える脱気部の構成を示す正面図である。図３に示すように、本発明の実施形態２に係る内視鏡用潅流液循環システムが備える脱気部２４０は、フロート式エアトラップをさらに有する。なお、脱気部２４０には、実施形態１に係る、光電センサ１９０、シーケンサ１９３、開閉弁１４７、配線１９４および配線１９５は設けられていない。 FIG. 3 is a front view showing a configuration of a deaeration unit provided in the perfusate circulation system for an endoscope according to the second embodiment of the present invention. As shown in FIG. 3, the deaeration unit 240 included in the perfusate circulation system for an endoscope according to the second embodiment of the present invention further includes a float air trap. The degassing unit 240 is not provided with the photoelectric sensor 190, the sequencer 193, the on-off valve 147, the wiring 194, and the wiring 195 according to the first embodiment.
　脱気部２４０が有するフロート式エアトラップは、球状のフロート２４１、弁体２４２、フロートガイド２４３、弁箱２４４、弁座２４５、および、弁体受け部２４６を含む。弁座２４５は、開口２４５ｈを有する。弁座２４５は、開口２４５ｈが排気筒１４６の内部と連通するように、排気筒１４６の下端に接続されている。 フ ロ ー The float type air trap included in the deaeration unit 240 includes a spherical float 241, a valve body 242, a float guide 243, a valve box 244, a valve seat 245, and a valve body receiving unit 246. The valve seat 245 has an opening 245h. The valve seat 245 is connected to the lower end of the exhaust pipe 146 such that the opening 245h communicates with the inside of the exhaust pipe 146.
　弁箱２４４は、円環状の外形を有する。弁箱２４４が弁座２４５によって覆われるように、弁箱２４４の上端が弁座２４５に接続されている。弁箱２４４の下端には、開口２４４ｈが設けられている。開口２４４ｈは、後述する弁体２４２の下端部が通過可能な大きさで形成されている。弁箱２４４の内側に、円環状の弁体受け部２４６が固定されている。 The valve box 244 has an annular outer shape. The upper end of the valve box 244 is connected to the valve seat 245 so that the valve box 244 is covered by the valve seat 245. An opening 244h is provided at the lower end of the valve box 244. The opening 244h is formed in such a size that a lower end of a valve body 242 described later can pass through. An annular valve body receiving portion 246 is fixed inside the valve box 244.
　フロートガイド２４３は、円環状の外形を有する。フロートガイド２４３の内部が弁箱２４４の内部と連通するように、フロートガイド２４３の上端が弁箱２４４の下端に接続されている。フロートガイド２４３の下端には、開口２４３ｈが設けられている。開口２４３ｈは、フロート２４１が脱落しない程度の大きさで形成されている。フロートガイド２４３、弁箱２４４および弁座２４５によって囲まれた領域Ｔａを通じて、チャンバ１４１内と排気筒１４６内とが互いに連通している。 The float guide 243 has an annular outer shape. The upper end of the float guide 243 is connected to the lower end of the valve box 244 so that the inside of the float guide 243 communicates with the inside of the valve box 244. An opening 243h is provided at the lower end of the float guide 243. The opening 243h is formed in such a size that the float 241 does not fall off. The inside of the chamber 141 and the inside of the exhaust pipe 146 communicate with each other through an area Ta surrounded by the float guide 243, the valve box 244, and the valve seat 245.
　フロート２４１は、フロートガイド２４３内に配置されている。フロート２４１は、チャンバ１４１内の潅流液１０の液面高さに応じて上下移動可能に設けられている。 The float 241 is arranged in the float guide 243. The float 241 is provided so as to be able to move up and down according to the liquid level of the perfusion liquid 10 in the chamber 141.
　弁体２４２は、弁箱２４４内に配置されている。弁体２４２は、フランジ部２４２ｆ、および、上端面２４２ｔを有する。弁体２４２は、上方から弁体受け部２４６の内側に挿通されており、フランジ部２４２ｆが弁体受け部２４６上に位置している。弁体２４２の下端部２４２ｂが、フロート２４１と当接する。弁体２４２は、フロート２４１の上昇とともに上昇して上端面２４２ｔが開口２４５ｈを閉塞する閉状態と、上端面２４２ｔが開口２４５ｈを閉塞していない開状態とに、選択的になりえるように構成されている。 The valve element 242 is arranged in the valve box 244. The valve body 242 has a flange portion 242f and an upper end surface 242t. The valve body 242 is inserted into the inside of the valve body receiving portion 246 from above, and the flange portion 242f is located on the valve body receiving portion 246. The lower end 242 b of the valve body 242 contacts the float 241. The valve element 242 is configured to be selectively movable between a closed state in which the upper end surface 242t closes the opening 245h by rising with the rise of the float 241 and an open state in which the upper end surface 242t does not close the opening 245h. Have been.
　以下、本発明の実施形態２に係る内視鏡用潅流液循環システムが備える脱気部２４０の動作について説明する。図４は、本発明の実施形態２に係る内視鏡用潅流液循環システムが備える脱気部において、潅流液が流入する前の状態を示す正面図である。 Hereinafter, the operation of the deaeration unit 240 provided in the perfusate circulation system for an endoscope according to the second embodiment of the present invention will be described. FIG. 4 is a front view showing a state before a perfusate flows in a degassing unit provided in the perfusate circulation system for an endoscope according to the second embodiment of the present invention.
　図４に示すように、本発明の実施形態２に係る内視鏡用潅流液循環システムが備える脱気部２４０の、チャンバ１４１内に潅流液が流入する前の状態においては、フロート２４１は、開口２４３ｈを塞ぐように位置しつつフロートガイド２４３に支持されている。弁体２４２は、弁体受け部２４６に支持されている。 As shown in FIG. 4, in a state before the perfusate flows into the chamber 141 of the deaeration unit 240 included in the perfusate circulation system for an endoscope according to the second embodiment of the present invention, the float 241 is It is supported by the float guide 243 while being positioned so as to close the opening 243h. The valve body 242 is supported by the valve body receiving portion 246.
　図５は、本発明の実施形態２に係る内視鏡用潅流液循環システムが備える脱気部において、潅流液が流入してチャンバ内のガスが排気されている状態を示す正面図である。第１流路部Ｌ１から脱気部２４０に流入した潅流液１０が第２流路部Ｌ２に流出し始めると、第２流路部Ｌ２に接続されているろ過器１５０を通過する際の流動抵抗が大きいため、第２流路部Ｌ２における流量が第１流路部Ｌ１における流量より小さくなり、図５に示すように、チャンバ１４１内に潅流液１０が溜まってくる。この状態においては、弁体２４２が開口２４５ｈを閉塞していない開状態であるため、潅流液１０が溜まるにしたがってチャンバ１４１内のガス１２が潅流液１０によって押し出されて排気される。 FIG. 5 is a front view showing a state in which the perfusate flows in and the gas in the chamber is exhausted in the deaeration unit provided in the endoscope perfusate circulation system according to the second embodiment of the present invention. When the perfusate 10 flowing into the degassing unit 240 from the first flow path unit L1 starts flowing out to the second flow path unit L2, the flow when passing through the filter 150 connected to the second flow path unit L2. Since the resistance is large, the flow rate in the second flow path section L2 becomes smaller than the flow rate in the first flow path section L1, and the perfusate 10 accumulates in the chamber 141 as shown in FIG. In this state, since the valve 242 is in an open state in which the opening 245h is not closed, the gas 12 in the chamber 141 is pushed out and exhausted by the perfusion liquid 10 as the perfusion liquid 10 accumulates.
　図６は、本発明の実施形態２に係る内視鏡用潅流液循環システムが備える脱気部における閉状態を示す正面図である。図６に示すように、潅流液１０の液面の上昇とともに弁体２４２が矢印４で示すように上昇して開口２４５ｈを閉塞した閉状態となっている間は、チャンバ１４１内のガス１２は排気されない。 FIG. 6 is a front view showing a closed state of the deaeration unit provided in the endoscope perfusate circulation system according to the second embodiment of the present invention. As shown in FIG. 6, while the valve body 242 rises as indicated by the arrow 4 and the opening 245h is closed with the rise in the level of the perfusate 10, the gas 12 in the chamber 141 is closed. Not exhausted.
　図７は、本発明の実施形態２に係る内視鏡用潅流液循環システムが備える脱気部において、閉状態から開状態に移行した状態を示す正面図である。閉状態においてチャンバ１４１内のガス１２が増えてガス１２の圧力が高くなると、図７に示すように、潅流液１０の液面が押し下げられる。潅流液１０の液面の下降とともに弁体２４２が矢印５で示すように下降することにより、弁体２４２が開口２４５ｈを閉塞しない開状態となる。その結果、チャンバ１４１内のガス１２が開口２４５ｈおよび排気筒１４６を通過して排気される。チャンバ１４１内のガス１２が排気され、チャンバ１４１内の圧力が低下すると、潅流液１０の液面高さが上昇し、再び閉状態となる。このように、本実施形態に係る脱気部２４０は、チャンバ１４１内のガス１２の圧力に応じて自動的に開閉して排気が行なわれる。 FIG. 7 is a front view showing a state in which the deaeration unit included in the perfusate circulation system for an endoscope according to the second embodiment of the present invention has shifted from a closed state to an open state. When the gas 12 in the chamber 141 increases in the closed state and the pressure of the gas 12 increases, the liquid level of the perfusate 10 is pushed down as shown in FIG. When the liquid level of the perfusate 10 drops, the valve body 242 descends as shown by the arrow 5, so that the valve body 242 enters an open state in which the opening 245h is not closed. As a result, the gas 12 in the chamber 141 is exhausted through the opening 245h and the exhaust tube 146. When the gas 12 in the chamber 141 is exhausted and the pressure in the chamber 141 decreases, the liquid level of the perfusate 10 increases, and the perfusion liquid 10 is closed again. As described above, the degassing unit 240 according to the present embodiment is automatically opened and closed according to the pressure of the gas 12 in the chamber 141 to perform exhaust.
　本実施形態においては、脱気部２４０がフロート式エアトラップを有することにより、実施形態１に係る脱気部１４０のように、光電センサ１９０、シーケンサ１９３および開閉弁１４７などの電気装置を備える必要がないため、脱気部２４０を簡易な構成とすることができる。 In the present embodiment, since the deaeration unit 240 has a float air trap, it is necessary to provide electric devices such as the photoelectric sensor 190, the sequencer 193, and the on-off valve 147 as in the deaeration unit 140 according to the first embodiment. Therefore, the deaeration unit 240 can have a simple configuration.
　なお、今回開示した上記実施形態はすべての点で例示であって、限定的な解釈の根拠となるものではない。したがって、本発明の技術的範囲は、上記した実施形態のみによって解釈されるものではなく、請求の範囲の記載に基づいて画定される。また、請求の範囲と均等の意味および範囲内でのすべての変更が含まれる。 Note that the above-described embodiment disclosed herein is merely an example in all respects, and is not a basis for restrictive interpretation. Therefore, the technical scope of the present invention is not interpreted only by the above-described embodiments, but is defined based on the description of the claims. Further, all changes within the meaning and scope equivalent to the claims are included.
　２　支柱、３　アーム部、１０　潅流液、１１　異物、１２　ガス、１００　内視鏡用潅流液循環システム、１１０　内視鏡、１１１　対物レンズ、１１２　噴射ノズル、１１３　吸引部、１２０　循環流路、１２１　廃液流路、１２２　第１チャンバ、１２３　第１圧力測定装置、１２４　第２チャンバ、１２５　第２圧力測定装置、１２９，１４７　開閉弁、１３０　ポンプ、１４０，２４０　脱気部、１４１　チャンバ、１４２　流入口、１４３　流出口、１４４　堰部、１４５　網部、１４６　排気筒、１５０　ろ過器、１５１　フラッシング回路、１６０　第１貯液部、１６１　第２貯液部、１７０　気泡検知器、１８０　血液量測定部、１９０　光電センサ、１９１　低位検知部、１９２　高位検知部、１９３　シーケンサ、１９４，１９５　配線、２４１　フロート、２４２　弁体、２４２ｂ　下端部、２４２ｆ　フランジ部、２４２ｔ　上端面、２４３　フロートガイド、２４３ｈ，２４４ｈ，２４５ｈ　開口、２４４　弁箱、２４５　弁座、２４６　弁体受け部。 2 pillar, 3 arm part, 10 perfusion liquid, 11 foreign matter, 12 gas, 100 perfusion liquid circulation system for endoscope, 110 endoscope, 111 objective lens, 112 injection nozzle, 113 suction part, 120 circulation path, 121 Waste liquid channel, 122 {first chamber, 123} first pressure measuring device, 124 second chamber, 125 second pressure measuring device, 129, 147 opening / closing valve, 130 pump, 140, 240 degassing section, 141 chamber, 142 inlet 143 outlet, 144 dam, 145 mesh, 146 exhaust stack, 150 filter, 151 flushing circuit, 160 first reservoir, 161 second reservoir, 170 bubble detector, 180 blood volume measurement, 190 photoelectric sensor, 191 low-order detection unit, 192 high-order detection unit, 193 sequencer, 94,195 lines, 241 float, 242 valve body, 242b lower end, 242f flange, 242T upper surface, 243 float guide, 243 h, 244h, 245h opening, 244 valve body, 245 valve seat, 246 valve body receiving portion.

Claims (8)

  1. 　内視鏡と、
    　前記内視鏡に接続され、前記内視鏡から外部に送液された潅流液を吸液して循環利用可能とする循環流路と、
    　前記循環流路に設けられ、前記潅流液をろ過するろ過器と、
    　前記循環流路に設けられ、前記潅流液を循環させるポンプと、
    　前記循環流路に設けられ、前記潅流液を脱気する脱気部とを備える、内視鏡用潅流液循環システム。     Endoscope,
    A circulation flow path connected to the endoscope and allowing the perfusion liquid sent from the endoscope to the outside to be circulated and used,
    A filter provided in the circulation channel, for filtering the perfusate;
    A pump provided in the circulation channel to circulate the perfusate;
    A perfusion solution circulation system for an endoscope, comprising: a deaeration unit provided in the circulation flow channel to degas the perfusion solution.
  2. 　前記脱気部は、前記潅流液中の異物の通過を妨げる網部を有する、請求項１に記載の内視鏡用潅流液循環システム。 The perfusion solution circulation system for an endoscope according to claim 1, wherein the degassing unit has a net portion that prevents passage of foreign matter in the perfusion solution.
  3. 　前記脱気部は、前記潅流液の流入口、前記潅流液の流出口、および、前記脱気部内に立設された堰部をさらに有し、
    　前記脱気部において、前記流入口は、前記堰部に対して、前記流出口とは反対側に位置している、請求項１または請求項２に記載の内視鏡用潅流液循環システム。     The deaeration unit further includes an inlet for the perfusion solution, an outlet for the perfusion solution, and a weir provided upright in the deaeration unit,
    3. The perfusion liquid circulation system for an endoscope according to claim 1, wherein, in the degassing unit, the inflow port is located on a side opposite to the outflow port with respect to the weir section. 4.
  4. 　前記脱気部は、フロート式エアトラップをさらに有する、請求項１から請求項３のいずれか１項に記載の内視鏡用潅流液循環システム。 The perfusion liquid circulation system for an endoscope according to any one of claims 1 to 3, wherein the deaeration unit further includes a float air trap.
  5. 　前記循環流路に設けられ、前記潅流液を貯液可能な、第１貯液部および第２貯液部をさらに備え、
    　前記循環流路における前記第１貯液部と前記第２貯液部との間の位置に、開閉弁が設けられている、請求項１から請求項４のいずれか１項に記載の内視鏡用潅流液循環システム。     A first liquid storage unit and a second liquid storage unit that are provided in the circulation channel and can store the perfusion liquid;
    The endoscope according to any one of claims 1 to 4, wherein an on-off valve is provided at a position between the first liquid storage part and the second liquid storage part in the circulation flow path. Perfusion fluid circulation system for mirror.
  6. 　前記循環流路における前記第１貯液部と前記内視鏡との間の位置に、第１圧力測定装置が設けられている、請求項５に記載の内視鏡用潅流液循環システム。 The perfusion liquid circulation system for an endoscope according to claim 5, wherein a first pressure measuring device is provided at a position between the first liquid storage section and the endoscope in the circulation flow path.
  7. 　前記循環流路における前記脱気部と前記ろ過器との間の位置に、第２圧力測定装置が設けられている、請求項１から請求項６のいずれか１項に記載の内視鏡用潅流液循環システム。 The endoscope according to any one of claims 1 to 6, wherein a second pressure measuring device is provided at a position between the deaeration unit and the filter in the circulation flow path. Perfusion fluid circulation system.
  8. 　前記ろ過器に、前記ろ過器をフラッシングするフラッシング回路が接続されている、請求項１から請求項７のいずれか１項に記載の内視鏡用潅流液循環システム。 The perfusion liquid circulation system for an endoscope according to any one of claims 1 to 7, wherein a flushing circuit for flushing the filter is connected to the filter.
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JPS62107843U (en) * 1985-12-27 1987-07-09
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