WO2014127707A1 - 空气逆止缓压装置 - Google Patents

空气逆止缓压装置 Download PDF

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Publication number
WO2014127707A1
WO2014127707A1 PCT/CN2014/072052 CN2014072052W WO2014127707A1 WO 2014127707 A1 WO2014127707 A1 WO 2014127707A1 CN 2014072052 W CN2014072052 W CN 2014072052W WO 2014127707 A1 WO2014127707 A1 WO 2014127707A1
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Prior art keywords
air
back pressure
casing
pressure
disposed
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PCT/CN2014/072052
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English (en)
French (fr)
Inventor
田万宝
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深圳市万聚源科技有限公司
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Publication of WO2014127707A1 publication Critical patent/WO2014127707A1/zh

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    • 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
    • A61M39/24—Check- or non-return valves
    • 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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/20—Valves specially adapted to medical respiratory devices
    • A61M16/208—Non-controlled one-way valves, e.g. exhalation, check, pop-off non-rebreathing valves
    • 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
    • A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
    • A61M5/155—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by gas introduced into the reservoir
    • 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
    • A61M39/24—Check- or non-return valves
    • A61M2039/2473—Valve comprising a non-deformable, movable element, e.g. ball-valve, valve with movable stopper or reciprocating element
    • A61M2039/248—Ball-valve

Definitions

  • the invention relates to the field of medical infusion pumps, in particular to an air back pressure relieving device for a pneumatic gravity compensation type infusion pump.
  • Intravenous infusion is one of the most commonly used treatments in the clinic.
  • the air that needs to be purified during infusion is continuously introduced into the liquid in the bottle.
  • the existing infusion pump is equipped with an air pump, and the air pump will start working at intervals.
  • the frequent start of the air pump may cause the air pressure in the infusion bottle to be unstable, and the infusion pump drip speed is unstable.
  • the purpose of the present invention is to In view of the drawbacks of the prior art, an air back pressure relief device for a pneumatic gravity compensation type infusion pump is provided.
  • the present invention adopts the following technical solution to design an air back pressure relief device, including a reverse connection system in sequence,
  • the pressure system and the transfer system includes a connecting pipe and an air single-way valve communicating with one end of the connecting pipe;
  • the pressure relief system includes another air check valve
  • the shaped energy buffering chamber and the transfer system are connected by a cross arm of a T-shaped tee, and the vertical arm of the T-shaped connecting tube is connected to a pneumatic sensor.
  • the air one-way valve is composed of a hollow cylindrical casing, a non-return steel ball and a return spring structure disposed in the cavity thereof.
  • the air inlet and the air outlet are respectively disposed at two ends of the casing, and the diameter of the air outlet is smaller than the diameter of the air inlet.
  • the shaped energy buffer chamber is an ellipsoidal air bag, and is disposed at the top of the connection end of the energy buffering chamber.
  • a groove having an ultraviolet tube in the groove is a groove having an ultraviolet tube in the groove.
  • the transfer system includes a hollow casing, the bottom of which is bent inwardly to form a ring edge, and is fixed by a positioning bolt.
  • an air flow transfer interface is arranged under the handle, and one side of the transfer interface is vertically provided with an air inlet pipe, which passes through the outer wall of the casing and extends into the cross arm of the T-shaped three-way pipe to form a passage.
  • a sealing gasket is disposed between the transfer interface and the bottom edge of the casing; the outer wall of the sealing gasket is provided with an ultraviolet tube, and the ultraviolet tube passes through the sealing gasket and extends into the cavity
  • the bottom of the casing is provided with a sealing port, and a soft rubber plug is arranged there.
  • the devices in the device that communicate with the gas passage are made of medical transparent silica gel material.
  • the invention adopts an air backstop system, a pressure relief system and a transfer system, which not only ensure the controllability and safety of the gas, but also guarantee It proves the airtightness of the device; it also avoids gas and liquid contamination caused by light irradiation and gas return.
  • FIG. 1 is a perspective view of an embodiment of the present invention
  • FIG. 2 is a schematic cross-sectional view of the embodiment shown in FIG. 1 in an applied state
  • FIG. 3 is a schematic cross-sectional view of the air check valve in the embodiment shown in FIG. 1;
  • Figure 4 is a cross-sectional view of the adapter system of the embodiment of Figure 1.
  • the air back pressure relieving device includes a backstop system. 1.
  • the pressure-relief system 2 and the transfer system 3, the systems of the device adopt a manner of sequentially snap-connecting to form an airflow path.
  • the backstop system 1 includes a connecting pipe 11 that is fixedly coupled to the air pump 7, and an air that communicates with the right end of the connecting pipe.
  • the gas check valve 12; the right end of the air check valve is in communication with the left end of the energy buffering chamber 21 in the pressure relief system 2, and the right end of the energy buffering chamber is connected to the left end of the cross arm of the T-shaped tee 4
  • the right end of the cross arm is in communication with the transfer system 3.
  • the air check valve 12 includes a hollow cylindrical casing, and the two ends thereof are respectively an air inlet 121 and an air outlet 122.
  • the air outlet has a larger diameter than the intake end, and the check ball 123
  • a return spring 124 is placed against the check ball in a cavity adjacent to the air inlet.
  • a step is provided on the outer circumference of the housing of the air check valve. 125.
  • a cylindrical connecting cap 126 is inserted into the side wall formed by the step, and the connecting pipe of the accumulating cushioning chamber 21 is inserted into the connecting cap and abuts against the other end of the return spring.
  • the energy-saving buffer chamber 21 is an ellipsoidal airbag, and the outer wall is provided with a reflective energy-concentrating coating 211, which can reflect the external pollution light to ensure the air quality in the warehouse;
  • the top of the connection end of the left side of the warehouse is provided with a transparent groove, and an LED ultraviolet tube 212 is disposed in the groove.
  • the ultraviolet tube illuminates the inside of the airbag, and is refracted by the reflective concentrated energy coating on the outer wall of the airbag to increase the light energy, thereby enhancing ultraviolet disinfection of the air in the chamber.
  • the space of the accumulative buffer chamber can well accommodate and buffer the pressure from the gas source gas, and stabilize the flow of the gas flow to the next working step, ensuring the controllability and safety of the gas. .
  • the vertical arm port of the T-shaped tee 4 is provided with a pneumatic sensor. 6.
  • the air pressure sensor will feed back the data to the control device according to the air pressure state in the passage, thereby controlling the operation of the air pump to stabilize the air flow, and ensuring the stability and reliability of the air flow in the entire passage.
  • the adapter system 3 includes a hollow casing 31, the bottom end of which is bent inwardly to form a ring edge 311, and a handle 34 is fixed at the upper end of the casing by a positioning bolt 33.
  • the air flow interface 35 when the handle is pressed, the air flow interface is closed to the atmosphere, and vice versa; the left side of the transfer interface is vertically provided with an intake pipe 36, which passes through the outer wall of the casing and extends into the T-shaped cross arm Forming a passage, and a sealing gasket is arranged between the transfer interface and the ring edge of the bottom end of the casing 37, on the side wall of the sealing gasket is further provided with an LED ultraviolet tube 32, which passes through the sealing gasket and extends into the cavity, and functions as a system
  • the airflow is UV sterilized. Under working conditions, the airflow with a certain pressure will be in the transfer system and the disposable infusion tube
  • the 38 is docked and output, and the sealing measures inside the adapter system prevent the gas from leaking out
  • a soft rubber plug 5 is provided at the sealing port, and the soft rubber plug is plugged into the sealing port when the device stops working. .
  • the devices in the device that communicate with the gas passage are made of a medical transparent silica gel material.
  • the air pump 7 sends the gas through the connecting pipe 11 to the air check valve 12, and the airflow having a certain pressure pushes the rubber ball 123 against the elastic force of the return spring 124 to enter the energy buffering chamber 2, and then the airflow flows through the T. Type tee 4 and air pressure sensor 6.
  • the air flow then passes through the T-shaped tee into the closed transfer system 3 and enters the disposable infusion tube 38 through the air transfer interface 35; in the above process, the ultraviolet tube on the pressure relief system and the transfer system emits ultraviolet light. Sterilize the airflow inside
  • the check ball 123 automatically blocks the air check valve 12 under the restoring force of the return spring 124, and seals the seal port 39 with a soft rubber plug.
  • the invention adopts an air backstop system, a pressure relief system and a transfer system, which not only ensures the controllability and safety of the gas, but also ensures the airtightness of the device; and also avoids gas and light caused by light irradiation and gas reflux.
  • the liquid is contaminated, and at the same time, the device increases the air capacity and buffers the air, so that the LED ultraviolet tube can efficiently sterilize the air in the air bag.

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  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Pulmonology (AREA)
  • Vascular Medicine (AREA)
  • Emergency Medicine (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)

Abstract

一种空气逆止缓压装置，包括依次连通的逆止系统（1）、缓压系统（2）和转接系统（3）。所述的逆止系统（1）包括连接管（11）、与连接管（11）一端连通的空气单向阀（12）。所述的缓压系统（2）包括与所述空气单向阀（12）另一端连通的聚能缓压仓（21）。所述的聚能缓压仓（21）和转接系统（3）通过一T形三通管（4）的横臂连接，T形三通管（4）的竖臂连接一气压感应器（6）。本发明采用了空气逆止系统（1）、缓压系统（2）和转接系统（3）,不仅保证了气体的可控性和安全性，也保证了装置的气密性，同时避免了因光线照射和气体回流造成的气体和药液污染。

Description

空气逆止缓压装置
本发明涉及医疗输液泵 领域，尤其涉及一种用于气动重力补偿式输液泵的空气逆止缓压装置。
静脉输液是临床上最常用的治疗方法之一，在输液时需要净化的空气不断进入瓶内的药液中。现有的输液泵中配备有气泵，没间隔一段时间气泵会启动工作，但是气泵的频繁启动会造成输液瓶中气压不稳、输液泵滴速不稳等现象，无法 达到精准输液的要求；现有 技术无法保障因气体回流而造成的空气污染和药液污染，同时无法保障因外界光源照射导致的空气和药液污染，如果被污染的液体输入病人体内可能会造成严重的危害。
本发明的目的是针对上 述现有技术存在的缺陷，提供一种用于气动重力补偿式输液泵的空气逆止缓压装置。
本发明 采用以下 技术方案 是，设计 一种空气 逆止缓压 装置，包 括依次连 通的逆 止系统、缓 压系 统和 转接系 统，所 述的 逆止系 统包 括连接 管、与 连接 管一端 连通 的空 气单 向阀 ；所 述的缓压系统 包括与所述空 气单向阀另一 端连通的聚能 缓压仓 ；所述的聚能缓 压仓和转接系统通过一 T 形三通管的横臂连接，T 形三通管的竖臂连接一气压感应器。
所述的 空气单向 阀由中空 的柱状 壳体、设于 其腔内的 止回钢 珠和回位 弹簧构 成，所述的壳体两端分别设有进气口和出气口，该出气口口径小于进气口口径。
所述的 聚能缓压 仓为一椭 球状气 囊，在聚能 缓压仓连 接端的 顶部设有 一凹槽，凹槽内设有一紫外管。
所述转 接系统包 括一中空 的套壳，其底部向 内弯折呈 环边，通 过定位螺 栓固定 在套壳上端的手柄，手柄下方 设有气流转接口，该转接口的 一侧垂直设有一进气管，其 穿过套壳外壁并伸入所述 T 型三通管横臂中构成通路 ；该转接口与套壳底端的环边之间设 有一密封垫圈 ；所 述的密 封垫圈 外壁上 设有一 紫外管，紫外管 穿过密 封垫圈 并伸入 其腔内 ；所述套壳底部设有密封口，该处设有一软胶塞。
本装置中与气体通路连通的装置均采用医用透明硅胶材料制作。
本发明 采用了空 气逆止系 统、缓压 系统和转 接系统，不 仅保证 了气体的 可控性 和安全性，也保 证了装置的 气密性 ；同时避免 了因光线照 射和气体回 流造成的气 体和药液污染。
图 1 为本发明一实施例的立体示意图 ；
图 2 为图 1 所示实施例应用状态下的剖面示意图 ；
图 3 为图 1 所示实施例中空气单向阀的剖面示意图 ；
图 4 为图 1 所示实施例中转接系统的剖面示意图。
下面结合附图和实施例对发明进行详细的说明。
如图 1、图 2 所示，该实施例中，空气逆止缓压装置包括逆止系统 1、缓压系统2和转接系统3，本装置的各系统采取依次卡接连通的方式形成气流通路。逆止系统1包括固定卡接在气泵7上的连接管11和连通于该 连接管右端的空 气单向阀12；空气单向阀的右端与缓压系统2中的聚能缓压仓21的左端连通，该聚能缓压仓的右端与T型三通管4横臂上的左端连通，其横臂的右端与转接系统3连通。
如图3所示，空气单向阀12包括一中空的柱状壳体，其两端分别为进气口121和出气口122，出气口的口径大于进气端，止回钢珠 123 设置在靠近进气口的腔体中，一回位弹簧 124 抵靠在止回钢珠上。结合图 2、图 3，空气单向阀的壳体外圆周上设有一台阶 125，一圆柱状连接帽126插接在该台阶形成的侧壁上，聚能缓压仓21的连接管插入连接帽内并抵靠在回位弹簧的另一端。
如图2所示，聚能缓压仓21为一椭球状气囊，其外壁设有反光聚能涂层211，该涂层能反射走外界的污染光线保证仓内空气质量；在聚能缓压仓左侧连接端的顶部设有一透明凹槽，凹槽内设置有一LED紫外管212。在工作状态下，该紫外管对气囊内进行照射，通过气囊外壁的反光聚能涂层折射而增加光照能量，从而加强对仓内空气进行紫外杀菌消毒 ；同时当气体进入装置后，聚能缓压仓的空间能够很好的容纳和缓冲来自气源气体的压力，并使气流稳定的流向下一个工作环节，保证了气体的可控性，安全性。
从图2中可以看出，T型三通管4的竖臂端口设有一气压感应器 6，在工作状态下，该气压感应器会根据通路中的气压状态将数据反馈给控制装置，从而控制气泵的工作来稳定气流，保证了整个通路中气流的稳定可靠。
如图4所示，转接系统3包括一中空的套壳31，其底端向内弯折形成环边311，在该套壳的上端通过定位螺栓33固定一手柄34，该手柄下方设有气流转接口35，当下压手柄时，气流转接口与大气封闭，反之则开启；该转接口的左侧垂直设有一进气管36，其穿过套壳外壁并伸入T型三通管横臂中构成通路，在该转接口与套壳底端的环边之间还设有一密封垫圈 37，在密封垫圈的侧壁上还设有一 LED 紫外管 32，其穿过密封垫圈并伸入其腔内，其作用是对系统内 的气流进行紫外杀菌消毒。在工作状态下，具有一定压力的气流会在转接系统中和一次性输液管 38对接并输出，转接系统内部的密封措施使气体不外泄，保证了装置的气密性。
参照图1，为了预防空气及其它异物通过转接装置套壳底部的密封口39进入装置，在该密封口处配有一软胶塞5，在设备停止工作时将此软胶塞塞住密封口。
在本实施例中，本装置中与气体通路相通的装置均采用医用透明硅胶材料制作。
工作时，气泵7将气体通过连接管11送入空气单向阀12，具有一定压力的气流克服回位弹簧124的弹力推开止回钢珠123进入聚能缓压仓2，接着气流流经T型三通管4和气压感应器 6，接着气流穿过T型三通管进入密闭的转接系统3中，经过气流转接口35进入一次性输液管38；在上述过程中，缓压系统和转接系统上的紫外管散发紫外线对其内的气流进行杀菌消毒 ；停止工作时，止回钢珠 123 在回位弹簧124的复位力下自动堵住空气单向阀12，同时使用软胶塞封住密封口39。
本发明采用了空气逆止系统、缓压系统和转接系统，不仅保证了气体的可控性和安全性，保证了装置的气密性；也避免了因光线照射和气体回流造成的气体和药液污染，同时本装置以增加空气容量，对空气产生缓冲滞留作用，从而使LED紫外管对气囊内空气进行高效杀菌。

Claims (8)

  1. 一种空气逆止缓压装置，其特征在于：包括依次连通的逆止系统、缓压系统和转接系统，所述的逆止系统包括连接管、与连接管一端连通的空气单向阀；所述的缓压系统包括
    与所述空气单向阀另一端连通的聚能缓压仓；所述的聚能缓压仓和转接系统通过一T形三通管的横臂连接，T形三通管的竖臂连接一气压感应器。
  2. 如权利要求1所述的空气逆止缓压装置，其特征在于：所述的空气单向阀由中空的柱状壳体、设于其腔内的止回钢珠和回位弹簧构成，所述的壳体两端分别设有进气口和出气口，该出气口口径小于进气口口径。
  3. 如权利要求1所述的空气逆止缓压装置，其特征在于：所述的聚能缓压仓为一椭球状气囊，在聚能缓压仓连接端的顶部设有一紫外管，该紫外管伸入聚能缓压仓内部。
  4. 如权利要求1所述的空气逆止缓压装置，其特征在于：所述聚能缓压仓的外壁设有反光聚能涂层。
  5. 如权利要求1所述的空气逆止缓压装置，其特征在于：所述转接系统包括一中空的套壳，其底部向内弯折呈环边，通过定位螺栓固定在套壳上端的手柄，手柄下方设有气流转接口，该转接口的一侧垂直设有一进气管，其穿过套壳外壁并伸入 所述 T 型管 横臂中构 成
    通路；该转接口与套壳底端的环边之间设有一密封垫圈。
  6. 如权利要求 5 所 述的空气逆止缓压 装置，其特征在于：所述的密 封垫圈外壁上设有一紫外管，紫外管穿过密封垫圈并伸入其腔内。
  7. 如权利要求 5 所述的空气逆止缓压装置，其特征在于：所述套壳底部设有密封口，该处设有一软胶塞。
  8. 如权利要求 1 所述 的空气逆止缓压装 置，其特征在于：本装置中与 气体通路连通的装置均采用医用透明硅胶材料制作。
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CN108478896A (zh) * 2018-04-11 2018-09-04 刘玮 通用型减压且集中控制的医用输液自动换瓶装置
CN110272301A (zh) * 2019-07-16 2019-09-24 宁夏农林科学院农业资源与环境研究所（宁夏土壤与植物营养重点实验室） 一种畜禽粪便旋转零排放堆肥发酵实验仓
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CN112914975B (zh) * 2021-01-27 2021-11-09 重庆普施康科技发展股份有限公司 一种体外反搏装置用便捷式的驱动装置

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US11662034B2 (en) 2019-07-24 2023-05-30 Quest Medical, Inc. Filtered vacuum relief vent valve

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