WO2022091775A1 - 流れ停止アセンブリ、圧力板、輸液カートリッジ及び輸液カートリッジ組立方法 - Google Patents

流れ停止アセンブリ、圧力板、輸液カートリッジ及び輸液カートリッジ組立方法 Download PDF

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Publication number
WO2022091775A1
WO2022091775A1 PCT/JP2021/037771 JP2021037771W WO2022091775A1 WO 2022091775 A1 WO2022091775 A1 WO 2022091775A1 JP 2021037771 W JP2021037771 W JP 2021037771W WO 2022091775 A1 WO2022091775 A1 WO 2022091775A1
Authority
WO
WIPO (PCT)
Prior art keywords
tube
infusion
receiving portion
tube receiving
flow stop
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2021/037771
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English (en)
French (fr)
Japanese (ja)
Inventor
俊 出水
晃史 佐野
秀行 佐藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Terumo Corp
Original Assignee
Terumo Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Terumo Corp filed Critical Terumo Corp
Priority to JP2022558981A priority Critical patent/JPWO2022091775A1/ja
Publication of WO2022091775A1 publication Critical patent/WO2022091775A1/ja
Priority to US18/137,141 priority patent/US20230256164A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
    • A61M5/16804—Flow controllers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/22—Valves or arrangement of valves
    • A61M39/28—Clamping means for squeezing flexible tubes, e.g. roller clamps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/142—Pressure infusion, e.g. using pumps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/142—Pressure infusion, e.g. using pumps
    • A61M5/14212—Pumping with an aspiration and an expulsion action
    • A61M5/14232—Roller pumps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/142—Pressure infusion, e.g. using pumps
    • A61M5/14244—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
    • A61M5/16804—Flow controllers
    • A61M5/16813—Flow controllers by controlling the degree of opening of the flow line
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
    • A61M5/16831—Monitoring, detecting, signalling or eliminating infusion flow anomalies
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/50—General characteristics of the apparatus with microprocessors or computers
    • A61M2205/502—User interfaces, e.g. screens or keyboards

Definitions

  • This disclosure relates to a flow stop assembly, a pressure plate, an infusion cartridge and an infusion cartridge assembly method.
  • a portable infusion pump that sends an infusion solution such as a drug solution
  • the portable infusion pump is used with a cassette that houses the infusion storage bag attached.
  • the portable infusion pump sends the infusion solution from the infusion solution storage bag via the infusion tube, and administers the infusion solution into the living body of a patient or the like while controlling the flow rate.
  • Patent Document 1 discloses an infusion pump that realizes an AFF function by a flow stop assembly.
  • the flow stop assembly disclosed in Patent Document 1 is composed of two parts, a flow stop closing arch and a flow stop arm. Therefore, it is necessary to combine and assemble these at the time of manufacturing. As a result, it is difficult to suppress the manufacturing cost and it is difficult to improve the production efficiency.
  • the flow stop assembly as the first aspect of the present disclosure is a flow stop assembly that can be attached to an infusion pump, and is a tube receiving portion provided with a fixing portion for fixing to the infusion pump, and the tube via a hinge.
  • a tube pressing portion that is coupled to the receiving portion and can be rotationally displaced with respect to the tube receiving portion about the hinge is provided, and the fixing portion is provided between the tube receiving portion and the tube pressing portion. With the tube inserted, it can be fixed to the infusion pump.
  • the tube pressing portion is urged so that the infusion tube is selectively closed while the fixed portion is fixed to the infusion pump.
  • the tube receiving portion has a limiting portion that limits the displacement of the infusion tube.
  • the restriction portion is configured by a groove formed in the tube receiving portion.
  • a pressure plate as a second aspect of the present disclosure is a pressure plate of an infusion pump, comprising a flow stop assembly and a main body to which the flow stop assembly is attached, wherein the flow stop assembly is the main body.
  • a tube receiving portion provided with a fixing portion for fixing to the tube receiving portion, and a tube pressing portion that is coupled to the tube receiving portion via a hinge and can be rotationally displaced with respect to the tube receiving portion with the hinge as an axis.
  • the fixing portion is fixed to the main body portion in a state where the infusion tube is inserted between the tube receiving portion and the tube pressing portion.
  • the infusion cartridge as the third aspect of the present disclosure is an infusion cartridge of an infusion pump, which includes a storage unit capable of accommodating a reservoir bag for accommodating an infusion solution, an infusion tube for supplying the infusion solution from the reservoir bag, and the above.
  • the pressure plate comprises a pressure plate attached to the containment portion, the pressure plate comprising a flow stop assembly, the flow stop assembly being coupled to the tube receiving portion and the tube receiving portion via a hinge and pivoting the hinge.
  • a tube pressing portion that can be rotationally displaced with respect to the tube receiving portion is provided, and the infusion tube is inserted between the tube receiving portion and the tube pressing portion.
  • the method for assembling an infusion cartridge as a fourth aspect of the present disclosure is a method for assembling an infusion cartridge for an infusion pump, which comprises a reservoir bag for accommodating an infusion solution, an accommodating portion for accommodating the reservoir bag, and a main body constituting a pressure plate.
  • the flow stop assembly as the fifth aspect of the present disclosure is a flow stop assembly that can be attached to the infusion pump, and comprises a tube receiving portion provided with a fixing portion for fixing to the infusion pump and the tube receiving portion. With the infusion tube inserted between them, the infusion tube is moved toward the tube receiving portion and is connected to the tube receiving portion via a hinge and a tube pressing portion capable of pressing the infusion tube, and the hinge is used as an axis.
  • the infusion tube is provided with a release clip that can be rotationally displaced with respect to the tube receiving portion, and the release clip displaces the tube pressing portion in a direction away from the tube receiving portion by the rotational displacement. It is possible to release the blocked state of.
  • the tube receiving portion and the release clip can be mutually twisted and displaced in the rotation axis direction of the hinge.
  • the release clip has a hook at an end that is not coupled to the hinge, and the tube receiving portion is such that the release clip pushes the tube pressing portion from the tube receiving portion. It has an engaging portion that engages with the hook portion in a state of being displaced in a direction away from the hook.
  • the tube receiving portion can release the engagement state between the hook portion and the engaging portion in a state where the release clip is twisted and displaced with respect to the tube receiving portion. Has a part.
  • the tube pressing portion is a state in which the hook portion and the engaging portion are engaged with each other, and the hook portion is sandwiched between the hook portion and the hook portion on the opposite side of the engaging portion. It has a regulatory unit that can regulate deformation or movement.
  • the infusion cartridge as the sixth aspect of the present disclosure is an infusion cartridge of an infusion pump, which includes a storage unit capable of accommodating a reservoir bag for accommodating an infusion solution, an infusion tube for supplying the infusion solution from the reservoir bag, and the above.
  • the pressure plate comprises a pressure plate attached to the accommodating portion, the pressure plate comprising a flow stop assembly, the flow stop assembly with an infusion tube inserted between the tube receiving portion and the tube receiving portion.
  • a tube pressing portion that moves toward the tube receiving portion and can press the infusion tube is coupled to the tube receiving portion via a hinge, and is rotationally displaced with respect to the tube receiving portion about the hinge as an axis.
  • the release clip includes a possible release clip, and the release clip can release the closed state of the infusion tube by shifting the tube pressing portion in a direction away from the tube receiving portion by the rotational displacement.
  • the number of parts can be reduced.
  • FIG. 1 It is a front view which shows the infusion pump as one Embodiment of this disclosure. It is a perspective view which shows the pressure plate which concerns on one Embodiment of this disclosure. It is a perspective view which shows the flow stop assembly before assembly which concerns on one Embodiment of this disclosure. It is a figure which shows the state which the tube pressing part of FIG. 2 is urged. It is a figure which shows the state which the release clip of FIG. 2 is rotationally displaced. It is a figure which shows one modification of the hinge of FIG.
  • FIG. 1 is a front view showing an infusion pump 100 as an embodiment of the infusion pump according to the present disclosure.
  • the infusion pump 100 includes a pump main body 1 and an infusion cartridge 2 as an embodiment of the infusion cartridge according to the present disclosure.
  • the infusion pump 100 shown in FIG. 1 can be used as, for example, a PCA (Patient Controlled Analgesia) pump, but the intended use is not particularly limited, and is a syringe pump, an infusion pump, a feeding pump, a blood pump or an insulin pump. It's okay.
  • the infusion pump is generally configured to send the infusion solution in the reservoir bag by pressing the infusion tube connected to the reservoir bag outside the pump.
  • the infusion pump 100 of the present embodiment is a disposable infusion cartridge 2. It is a PCA pump that can reuse the pump main body 1 by replacing.
  • a display unit 120 for displaying various information and an operation unit 130 in which operation switches are arranged are arranged on the display unit 120.
  • the display unit 120 may be a liquid crystal screen with a touch panel for setting the liquid feeding speed and the like. While the operation switch of the operation unit 130 shown in FIG. 1 is pressed, the operation switch is pressed with the fast-forward switch 131 that enables the liquid to be pumped at a liquid feeding speed higher than the set liquid feeding speed (mL / h).
  • a start switch 132 that starts liquid feeding by doing so, a stop switch 133 that forcibly stops liquid feeding by being pressed, and a power switch 134 for instructing ON / OFF of the power supply of the pump body 1.
  • a stop switch 133 that forcibly stops liquid feeding by being pressed
  • a power switch 134 for instructing ON / OFF of the power supply of the pump body 1.
  • the pump body 1 has a power supply unit, a storage unit, a control unit, a display unit 120, an operation unit 130, a pressing unit which is a plurality of fingers for pressing the infusion tube 14, and a drive for driving these fingers.
  • a bubble detection sensor unit, a blockage sensor unit, a notification unit by an alarm, etc. are provided.
  • the pump main body 1 is not limited to the configuration of the present embodiment.
  • the pump main body 1 may be provided with a portion different from the portion described above, or may be replaced with a portion having the same function.
  • the infusion cartridge 2 includes a storage unit 11 as an external case that can store the reservoir bag.
  • a reservoir bag is housed inside the storage part 11.
  • the reservoir bag can contain the infusion solution inside.
  • An infusion tube 14 for supplying an infusion solution from the inside of the reservoir bag is attached to the reservoir bag.
  • the infusion pump 100 is used in a state where the infusion cartridge 2 containing the infusion solution is attached to the pump main body 1.
  • the infusion cartridge 2 is attached to the pump main body 1 so that the infusion tube 14 is sandwiched between the pump main body 1 and the infusion cartridge 2.
  • a pressure plate 20, which will be described later, is attached to the accommodating portion 11 of the infusion cartridge 2 facing the pump main body 1. That is, in a state where the reservoir bag containing the infusion solution is stored inside the storage unit 11, the pressure plate 20 is attached to the facing portion of the storage unit 11, so that the reservoir bag is stored in the storage unit 11. Be maintained.
  • the downstream side of the infusion tube 14 is located outside the accommodating portion 11 and is connected so that it can be administered into a living body such as a patient.
  • the infusion pump 100 is configured by attaching the infusion cartridge 2 to the pump main body 1 so that the infusion tube 14 is sandwiched between the pump main body 1 and the infusion cartridge 2.
  • the pump body 1 sends the infusion solution in the infusion tube 14 sandwiched between the infusion cartridge 2 and the infusion cartridge 2 from the upstream side of the flow path (that is, the reservoir bag side) to the downstream side of the flow path (that is, the opposite side of the reservoir bag).
  • a liquid unit 140 is provided.
  • the liquid feeding unit 140 of the present embodiment includes a plurality of fingers as pressing units for pressing the infusion tube 14, and a driving unit for driving these fingers.
  • the plurality of fingers are arranged on the top surface of the pump body 1 facing the pressure plate 20 located on the top surface of the infusion cartridge 2 facing the pump body 1.
  • the plurality of fingers are arranged along the extending direction of the sandwiched infusion tube 14.
  • Each finger is driven by a drive unit so as to reciprocate in the direction facing the pressure plate 20 of the infusion cartridge 2.
  • the infusion tube 14 is sandwiched between each finger and the pressure plate 20.
  • the drive unit sequentially drives the fingers from the upstream side of the flow path to the downstream side of the flow path in the extending direction of the infusion tube 14.
  • the infusion tube 14 is sequentially compressed and closed from the upstream side of the flow path to the downstream side of the flow path, and peristaltic. Therefore, the infusion solution in the infusion solution tube 14 can be sent from the upstream side of the flow path to the downstream side of the flow path.
  • the liquid feeding unit 140 of the pump body 1 of the present embodiment has a configuration in which the infusion tube 14 is pressed by a plurality of fingers, but if the infusion solution in the infusion tube 14 can be fed. A pressing portion different from that of the finger may be used.
  • the liquid feeding unit 140 of the pump main body 1 may be a pump capable of feeding liquid to the infusion tube 14, and may be a syringe pump, a piston pump, a plunger pump, a diaphragm pump, or the like.
  • FIG. 2 is a perspective view showing a pressure plate 20 according to an embodiment of the present disclosure.
  • the pressure plate 20 includes a flow stop assembly 30 and a main body portion 21 to which the flow stop assembly 30 is attached.
  • the side facing the pump main body 1 is defined as the z-axis positive direction. Therefore, in a state where the pressure plate 20 is attached to the accommodating portion 11, the accommodating portion 11 is located in the negative direction of the z-axis of the pressure plate 20.
  • the direction in which the infusion tube 14 extends is the x-axis direction
  • the direction orthogonal to the xz plane is the y-axis direction.
  • the infusion tube 14 With the infusion cartridge 2 mounted on the pump body 1, the infusion tube 14 extends in the x-axis direction and is sandwiched between the pressure plate 20 of the infusion cartridge 2 and the finger of the pump body 1 as shown in FIG. Is done. At this time, as shown in FIG. 2, the infusion tube 14 is held by the flow stop assembly 30 in a part of the extending x-axis direction.
  • the flow stop assembly 30 is assembled to hold the infusion tube 14.
  • the flow stop assembly 30 is attached to the pressure plate 20 in the assembled state.
  • the tube receiving portion 40 and the tube pressing portion 50 are in a state where the infusion tube 14 can be pressed by the tube receiving portion 40 and the tube pressing portion 50 described later. It means to put in the state where.
  • the hinge 31 in the state where the flow stop assembly 30 is assembled, the hinge 31 is provided so that the tube receiving portion 40 and the tube pressing portion 50 face each other, particularly in a state where the infusion tube 14 is held by the tube receiving portion 40. It means that the tube pressing portion 50 is in a state of being rotationally displaced with the rotation axis.
  • FIG. 3 is a perspective view showing a flow stop assembly 30 before assembly according to an embodiment of the present disclosure.
  • the flow stop assembly 30 includes a tube receiving portion 40, a tube pressing portion 50, and a release clip 60.
  • the directions of the x-axis, y-axis, and z-axis in FIG. 3 are the same as the directions of the x-axis, y-axis, and z-axis of FIG. 2, with reference to the tube receiving portion 40. That is, the x-axis, y-axis, and z-axis directions in FIGS. 2 and 3 are the same when viewed from the tube receiving portion 40.
  • the tube receiving portion 40 and the tube pressing portion 50 are connected via a hinge 31.
  • the tube pressing portion 50 is coupled to the tube receiving portion 40 so as to be located on the y-axis negative direction side of the tube receiving portion 40.
  • the tube receiving portion 40 and the release clip 60 are connected via a hinge 32.
  • the release clip 60 is coupled to the tube receiving portion 40 so as to be located on the x-axis negative direction side of the tube receiving portion 40. Therefore, the tube pressing portion 50 and the release clip 60 are arranged at orthogonal positions with respect to the tube receiving portion 40.
  • the release clip 60 may be arranged at a position facing the tube pressing portion 50, or may be arranged adjacent to the tube pressing portion 50.
  • the tube receiving portion 40 includes a fixing portion 41 for fixing the flow stop assembly 30 to the infusion pump 100.
  • the flow stop assembly 30 is attached to the infusion pump 100 by fixing the fixing portion 41 to the infusion pump 100.
  • the fixing portion 41 may be configured by any embodiment in which the flow stop assembly 30 can be fixed to the infusion pump 100.
  • the fixing portion 41 is configured to be particularly fixable to the main body portion 21 of the pressure plate 20.
  • the main body 21 of the pressure plate 20 may have an engaging claw 22, and the fixing portion 41 may be composed of a convex portion that can engage with the engaging claw 22.
  • the mode of the fixing portion 41 is not limited to this, and a plurality of fixed portions 41 may be provided.
  • the tube receiving portion 40 includes a limiting portion 42 that limits the displacement of the infusion tube 14.
  • the limiting portion 42 is configured to limit the displacement of the infusion tube 14 in at least a part of the directions other than the extending direction (that is, the x-axis direction) in the assembled state of the flow stop assembly 30. You just have to.
  • the limiting portion 42 is configured by a groove provided on the wall surface 43 of the tube receiving portion 40.
  • the infusion tube 14 is inserted through and arranged in the limiting portion 42 formed by the groove, so that the displacement of the infusion tube 14 in the y-axis direction and the z-axis positive direction is limited.
  • the tube receiving portion 40 has a through hole 44 penetrating in the z-axis direction.
  • the through hole 44 is a hole for passing the head portion 52 of the tube pressing portion 50 in a state where the flow stop assembly 30 is assembled, as will be described in detail later.
  • the tube pressing portion 50 has an arm portion 51 extending in the negative y-axis direction from the hinge 31 and a head portion located at the tip of the arm portion 51, that is, at the other end opposite to the hinge 31. 52 and.
  • the tube pressing portion 50 can be rotationally displaced with respect to the tube receiving portion 40 about the hinge 31 as an axis. That is, in the example shown in FIG. 3, the tube pressing portion 50 has an axis parallel to the x-axis along the hinge 31 (hereinafter, also simply referred to as “the axis of the hinge 31”) as a rotation axis with respect to the tube receiving portion 40. Can be rotationally displaced. Specifically, the tube pressing portion 50 can be rotationally displaced in the clockwise direction with the axis of the hinge 31 as the rotation axis when viewed from the negative direction of the x-axis.
  • the tube pressing portion 50 When assembling the flow stop assembly 30, with the infusion tube 14 arranged in the limiting portion 42 of the tube receiving portion 40, the tube pressing portion 50 is viewed from the negative direction of the x-axis, and the axis of the hinge 31 is used as the rotation axis. Rotate and displace it clockwise so that the head portion 52 is located in the through hole 44 as shown in FIG. As a result, the infusion tube 14 is inserted between the limiting portion 42 of the tube receiving portion 40 and the arm portion 51 of the tube pressing portion 50. In this way, with the infusion tube 14 inserted between the tube receiving portion 40 and the tube pressing portion 50, the flow stop assembly 30 is fixed to the main body portion 21 of the pressure plate 20 by the fixing portion 41.
  • the head portion 52 of the tube pressing portion 50 is urged in a direction of closing the infusion tube 14.
  • the head portion 52 of the tube pressing portion 50 is urged in the positive direction of the z-axis.
  • the urging may be performed by any method.
  • the head portion 52 may be urged in the positive z-axis direction by the elastic force of an elastic body 23 (see FIG. 4) such as a spring provided on the pressure plate 20.
  • the tube pressing portion 50 can move toward the tube receiving portion 40 with the infusion tube 14 inserted between the tube receiving portion 40 and press the infusion tube 14.
  • the head portion 52 is urged in the positive direction of the z-axis, as shown in FIG. 4, the head portion 52 of the tube pressing portion 50 protrudes from the through hole 44 in the positive direction of the z-axis. Become. In this state, the infusion tube 14 is pressed by the arm portion 51 and is in a closed state.
  • the head portion 52 is pushed down from the positive direction to the negative direction on the z-axis and the head portion 52 is located in the through hole 44 as shown in FIG.
  • the infusion tube 14 is not pressed by the arm portion 51. , It is in a state where it is not blocked.
  • the tube pressing portion 50 can selectively close the infusion tube 14 in a state where the fixing portion 41 is fixed to the main body portion 21 of the pressure plate 20 of the infusion pump 100.
  • “selectively obstructing” means an infusion tube 14 between the infusion tube 14 and the obstruction allowable position where the tube pressing portion 50 allows the infusion tube 14 to be obstructed with the tube receiving portion 40. It means that it is movable relative to the tube receiving portion 40 between the obstruction release position that does not obstruct.
  • the pump main body 1 has a pressing portion such as a convex portion that pushes down the head portion 52 in the negative direction of the z-axis when the infusion cartridge 2 is mounted.
  • a pressing portion such as a convex portion that pushes down the head portion 52 in the negative direction of the z-axis when the infusion cartridge 2 is mounted.
  • the head portion 52 When the infusion cartridge 2 is removed from the pump body 1, the head portion 52 is displaced in the positive z-axis direction due to the urging force of, for example, the elastic body 23, and moves to the position shown in FIG. As a result, the infusion tube 14 is in a closed state when the infusion cartridge 2 is not attached to the pump body 1. In this way, the flow stop assembly 30 functions as an AFF mechanism.
  • the release clip 60 includes a main body portion 61 and an end portion 62 located at the tip of the main body portion 61, that is, the other end opposite to the hinge 32.
  • the release clip 60 can be rotationally displaced with respect to the tube receiving portion 40 about the hinge 32 as an axis. That is, in the example shown in FIG. 3, the release clip 60 has an axis parallel to the y-axis along the hinge 32 (hereinafter, also simply referred to as “the axis of the hinge 32”) as a rotation axis with respect to the tube receiving portion 40. Rotational displacement is possible. Specifically, the release clip 60 can be rotationally displaced in the counterclockwise direction with the axis of the hinge 32 as the rotation axis when viewed from the positive direction of the y-axis. Specifically, the release clip 60 can move between the blockage allowable position and the blockage release position by rotational displacement around the hinge 32.
  • the permissible blockage position is a position that allows the tube pressing portion 50 to move toward the tube receiving portion 40 and allows the infusion tube 14 to be closed between the tube pressing portion 50 and the tube receiving portion 40.
  • the blockage allowable position is a position that does not interfere with the tube pressing portion 50.
  • the blockage release position is a position that abuts on the tube pressing portion 50 and restricts the movement of the tube pressing portion 50 toward the tube receiving portion 40 side. That is, the blockage release position is a position that interferes with the tube pressing portion 50. As a result, the infusion tube 14 cannot be closed between the tube pressing portion 50 and the tube receiving portion 40.
  • the blockage allowable position and the blockage release position will be further described below.
  • the release clip 60 In a state where the flow stop assembly 30 is attached to the main body 21 of the pressure plate 20 and is in the blockage allowable position, the release clip 60 is rotationally displaced counterclockwise when viewed from the positive direction of the y-axis, whereby the main body 61 is displaced. It comes into contact with the head portion 52 of the tube pressing portion 50. From that state, the release clip 60 is released by displacement of the tube pressing portion 50 in the direction opposite to the direction in which the tube pressing portion 50 is urged by the elastic body 23, that is, in the direction away from the tube receiving portion 40. It can be moved to the position and the blocked state of the infusion tube 14 can be released.
  • the release clip 60 when the main body portion 61 is in contact with the head portion 52 and the release clip 60 is further rotationally displaced counterclockwise when viewed from the positive direction of the y-axis, that is, the release clip 60 is
  • the head portion 52 is pushed down in the negative direction of the z-axis
  • the head portion 52 is pushed down in the negative direction of the z-axis as shown in FIG.
  • the arm portion 51 is also pushed down in the negative direction of the z-axis, and as a result, the state in which the infusion tube 14 is closed by the tube receiving portion 40 and the arm portion 51 is released.
  • the release clip 60 can be moved to the blockage release position, and the blockage state of the infusion tube 14 can be released.
  • the blocked state of the infusion tube 14 can be released by rotationally displacing the release clip 60 in this way.
  • the infusion tube 14 can be released from the blocked state to fill the reservoir bag with the infusion solution.
  • the release clip 60 has a hook 63 at the end 62. Further, the tube receiving portion 40 has an engaging portion 45 that engages with the hook portion 63.
  • the release clip 60 can engage the hook portion 63 and the engaging portion 45 in a state where the tube pressing portion 50 is displaced in a direction away from the tube receiving portion 40. More specifically, in the present embodiment, the head portion 52 of the tube pressing portion 50 is pushed down in the negative direction of the z-axis by the release clip 60, and the hook portion 63 and the engaging portion are released in a state where the infusion tube 14 is released from the closed state. It can be engaged with 45.
  • the release clip 60 By engaging the hook portion 63 and the engaging portion 45, it is possible to maintain the state in which the head portion 52 is pushed down by the release clip 60 without continuously pressing the hook portion 63, for example, with a finger or the like. That is, the release clip 60 can be kept at the block release position.
  • the engaging portion 45 is provided at a position where the release clip 60 can engage with the hook portion 63 in a state where the tube pressing portion 50 is displaced in this way.
  • the tube pressing portion 50 is preferably located on the back surface 63a side where the hinge 32 is located with respect to the hook portion 63 in a state where the hook portion 63 and the engaging portion 45 are engaged. That is, in the present embodiment, the head portion 52 of the tube pressing portion 50 is pushed down in the negative direction of the z-axis by the release clip 60, and the head portion 52 is hooked in a state where the hook portion 63 and the engaging portion 45 are engaged. It is preferably located on the back surface 63a side of the portion 63. At this time, it is preferable that the distance between the back surface 63a and the head portion 52 is short.
  • the head portion 52 on the back surface 63a side of the hook portion 63, it is possible to prevent the hook portion 63 from being displaced in the negative direction on the x-axis.
  • the center of the main body portion 61 of the release clip 60 is pressed in the positive direction of the z-axis by the urging force in the positive direction of the z-axis with respect to the head portion 52. Since the formed portion is curved and deformed in the positive direction of the z-axis, the end portion 62 including the hook portion 63 is likely to be displaced to the negative direction side of the x-axis.
  • the tube pressing portion 50 includes a regulating portion 53 capable of restricting deformation or movement of the hook portion 63 on the side opposite to the engaging portion 45 with the hook portion 63 interposed therebetween.
  • the regulation unit 53 of the present embodiment is composed of a head unit 52.
  • the head portion 52 can regulate the displacement of the hook portion 63 in the negative direction on the x-axis. As a result, it is possible to prevent the hook portion 63 and the engaging portion 45 from being unintentionally released from the engaged state.
  • the tube receiving portion 40 and the release clip 60 may be configured to be mutually twistable and displaceable in the rotation axis direction (y-axis direction in the present embodiment) of the hinge 32.
  • the hinge 32 may be made of a flexible or elastic material so that it can be twisted and displaced, for example.
  • the hinge 32 may have, for example, other mechanism that allows torsional displacement.
  • the tube receiving portion 40, the tube pressing portion 50 and the release clip 60 may have a reinforcing structure.
  • the reinforcing structure may be appropriately selected from various methods including molding by combining a plurality of types of resins, molding a easily deformable portion to a thick thickness, adhering another member such as a metal plate, and the like.
  • the hinge 32 is configured so that the length of the member of the hinge 32 in the x-axis direction becomes longer as the distance from one point (hereinafter referred to as a specific point) 33 of the hinge 32 along the y-axis direction increases. good.
  • the length of the member of the hinge 32 in the x-axis direction at the hinge 32 at a position separated along the y-axis direction becomes longer than the length of the member of the hinge 32 in the x-axis direction at the specific point 33. Therefore, the farther away from the specific point 33 along the y-axis direction, the longer the member constituting the hinge 32, and the larger the twist width.
  • the release clip 60 may be configured to be twistably displaced in the axial direction of the hinge 32 with respect to the tube receiving portion 40.
  • the hinge 32 has a predetermined or more in the coupling direction (x-axis direction in the state before assembly as shown in FIG. 3) for connecting the tube receiving portion 40 and the release clip 60. It may be composed of the elastic member 34 having the length of. In this example, the length of the hinge 32 may be uniform along the y-axis direction. In this example, the elastic member 34 itself as the hinge 32 is twisted and deformed as a whole, so that the end portion 62 of the release clip 60 can be twisted and displaced with a predetermined displacement width. In other words, the elastic member 34 has a length equal to or longer than a predetermined length capable of the above-mentioned torsional deformation. In this way, the release clip 60 may be configured to be twistable and displaceable.
  • the tube receiving portion 40 has a releasing portion 46 capable of releasing the engaged state between the hook portion 63 and the engaging portion 45 in a state where the end portion 62 is twisted and displaced. That is, the disengagement portion 46 is configured to disengage the engaged state when the end portion 62 is twisted and displaced.
  • the releasing portion 46 is formed by a recess provided adjacent to the engaging portion 45 on the wall surface provided with the engaging portion 45.
  • the hook portion 63 can be extracted from the release portion 46 formed by the above. In this way, by having the release portion 46, even if the head portion 52 is located on the back surface 63a side of the hook portion 63 as described above, the engagement state can be released by twisting the release clip 60. can.
  • a reservoir bag, an accommodating portion 11, a main body portion 21 constituting the pressure plate 20, and a flow stop assembly 30 are prepared.
  • the flow stop assembly 30 is the flow stop assembly 30 shown in FIG. 3 described in the above embodiment.
  • the infusion tube 14 is inserted through the limiting portion 42 and arranged, and the tube pressing portion 50 is clockwise when viewed from the negative direction of the x-axis with the x-axis as the rotation axis. Rotationally displace.
  • the infusion tube 14 is inserted between the tube receiving portion 40 and the tube pressing portion 50.
  • the flow stop assembly 30 assembled in this way is attached to the main body 21.
  • the pressure plate 20 including the main body portion 21 and the flow stop assembly 30 is formed.
  • the head portion 52 of the tube pressing portion 50 is urged by the elastic body 23 in the positive direction of the z-axis.
  • the reservoir bag is accommodated in the accommodating portion 11, and the pressure plate 20 provided with the flow stop assembly 30 is attached to the top surface of the accommodating portion 11. In this way, the infusion cartridge 2 is assembled.
  • the release clip 60 is arranged at the position where the infusion cartridge 2 is allowed to be blocked when the infusion cartridge 2 is assembled. After assembling the infusion cartridge 2, the release clip 60 is moved to the blockage release position, so that the blockage state of the infusion tube 14 is released.
  • the tube receiving portion 40, the tube pressing portion 50, and the release clip 60 are connected by the hinges 31 and 32 to form one member. .. Therefore, the number of parts constituting the flow stop assembly 30 can be reduced as compared with the case where the tube receiving portion 40, the tube pressing portion 50, and the release clip 60 are formed of different independent members. .. By reducing the number of parts, the number of parts to be manufactured is reduced, so that it becomes easier to control the manufacturing cost. Further, by reducing the number of parts, it is not necessary to assemble the flow stop assembly 30 by combining a plurality of parts, so that the assembly can be simplified and the cause of troubles such as forgetting to attach the parts can be reduced.
  • the tube pressing portion 50 is rotationally displaced to press the infusion tube 14 with the tube receiving portion 40. Since it can be inserted into the portion 50, it is easy to assemble, and the possibility of displacement during assembly is reduced. Moreover, since it is not necessary to combine a plurality of members, the assembly speed is increased.
  • the release clip 60 since the tube receiving portion 40 and the release clip 60 are configured as one member, the release clip 60 will not be lost.
  • the flow stop assembly 30 does not necessarily include these.
  • the three constituent requirements do not have to be composed of one member.
  • at least the tube receiving portion 40 and the tube pressing portion 50, or the tube receiving portion 40 and the release clip 60 may be composed of one member.
  • the hinge 32 that can be twisted and displaced has been described, but the hinge 32 does not have to be configured so that it can be twisted and displaced.
  • the engaging portion 45 provided on the inner wall surface of the through hole 44 has been described, but the position of the engaging portion 45 is not particularly limited.
  • the engaging portion 45 may be provided on the wall surface of the tube receiving portion 40, which is different from the inner wall surface of the through hole 44, such as the outer wall surface of the tube receiving portion 40 on the positive direction side of the x-axis. That is, the position of the engaging portion 45 may be appropriately set according to the position of the hook portion 63.
  • the configuration in which the hook-shaped hook portion 63 is engaged by being caught by the engaging portion 45 has been described, but the configuration is not limited to such an engagement configuration.
  • the tube receiving portion 40 and the release clip 60 may be configured such that, for example, a convex portion provided on one side and a concave portion or a hole provided on the other side are engaged with each other by abutting with each other.
  • the flow stop assembly, pressure plate, infusion cartridge, and infusion cartridge assembly method according to the present disclosure are not limited to the specific configurations / processes shown in the above-described embodiments, and various modifications / processes are made as long as they do not deviate from the claims. It can be changed.
  • This disclosure relates to a flow stop assembly, a pressure plate, an infusion cartridge and an infusion cartridge assembly method.

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  • Infusion, Injection, And Reservoir Apparatuses (AREA)
PCT/JP2021/037771 2020-10-28 2021-10-12 流れ停止アセンブリ、圧力板、輸液カートリッジ及び輸液カートリッジ組立方法 Ceased WO2022091775A1 (ja)

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US18/137,141 US20230256164A1 (en) 2020-10-28 2023-04-20 Flow stop assembly, pressure plate, infusion cartridge and infusion cartridge assembly method

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JP2020-180658 2020-10-28

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3822052A (en) * 1973-04-02 1974-07-02 Illinois Tool Works Shut off clamp
US4053135A (en) * 1976-09-20 1977-10-11 Sigma Scientific Development, Inc. Hose clamp
JPH03133461A (ja) * 1989-08-28 1991-06-06 Ivac Corp 柔軟なチューブのためのクランプ
JP2015516207A (ja) * 2012-04-10 2015-06-11 スミス メディカル エーエスディー， インコーポレイテッドＳｍｉｔｈｓ Ｍｅｄｉｃａｌ Ａｓｄ， Ｉｎｃ． 輸液ポンプに取り付けるための圧力板、輸液ポンプのカセットリザーバアタッチメント、輸液ポンプのチューブの閉塞において使用するための取り付け可能な流れ停止アセンブリ及び輸液ポンプのカセットを組み立てる方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3822052A (en) * 1973-04-02 1974-07-02 Illinois Tool Works Shut off clamp
US4053135A (en) * 1976-09-20 1977-10-11 Sigma Scientific Development, Inc. Hose clamp
JPH03133461A (ja) * 1989-08-28 1991-06-06 Ivac Corp 柔軟なチューブのためのクランプ
JP2015516207A (ja) * 2012-04-10 2015-06-11 スミス メディカル エーエスディー， インコーポレイテッドＳｍｉｔｈｓ Ｍｅｄｉｃａｌ Ａｓｄ， Ｉｎｃ． 輸液ポンプに取り付けるための圧力板、輸液ポンプのカセットリザーバアタッチメント、輸液ポンプのチューブの閉塞において使用するための取り付け可能な流れ停止アセンブリ及び輸液ポンプのカセットを組み立てる方法

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