WO2007134545A1 - Device for controlling the medication fluid flowing speed of the fluid delivery apparatus - Google Patents

Device for controlling the medication fluid flowing speed of the fluid delivery apparatus Download PDF

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Publication number
WO2007134545A1
WO2007134545A1 PCT/CN2007/001666 CN2007001666W WO2007134545A1 WO 2007134545 A1 WO2007134545 A1 WO 2007134545A1 CN 2007001666 W CN2007001666 W CN 2007001666W WO 2007134545 A1 WO2007134545 A1 WO 2007134545A1
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WO
WIPO (PCT)
Prior art keywords
infusion
casing
flow rate
roller
infusion set
Prior art date
Application number
PCT/CN2007/001666
Other languages
English (en)
French (fr)
Inventor
Yuntao Yan
Original Assignee
Yuntao Yan
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 Yuntao Yan filed Critical Yuntao Yan
Publication of WO2007134545A1 publication Critical patent/WO2007134545A1/zh

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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

Definitions

  • the invention relates to an infusion device liquid medicine flow rate control device.
  • Intravenous infusion is one of the most commonly used clinical treatments and is a commonly used medication for the nursing profession. Clinically, the appropriate infusion rate is matched depending on the drug and the patient's condition. Some special patients or special drugs in hospitals must require a small amount of accurate input at low speed. Otherwise, if the spring infusion is too fast, it may cause poisoning. If it is more serious, it may cause edema and heart failure. If the infusion is too slow, the dose may occur. Not enough to make treatment affected and add unnecessary burden to patients and care. : Conventional clinical infusion, it is common to use a single-use infusion set to infuse bottle infusion, and observe with the eye, relying on adjusting the flow regulator to control the speed of the drop.
  • the motor shaft drives the camshaft to rotate: the slider is reciprocated up and down according to a certain sequence and motion law, and the disposable infusion device is sequentially squeezed like a wave to make the liquid in the infusion tube flow at a certain speed.
  • the device of this structure relies on the slider to sequentially press the disposable infusion set hose, and there is a gap between the sliders, which tends to cause large fluctuations in the flow rate of the liquid medicine, so that the flow rate of the liquid medicine in the infusion device changes.
  • the amplitude is high, especially in low-speed infusion. It is difficult to achieve accuracy.
  • it needs a special infusion device with high cost.
  • the cost of the special infusion set is generally several times that of the ordinary infusion set. .
  • the two major problems of large infusion errors and high cost of use seriously affect the use of precision infusion control devices.
  • the invention is directed to a technique for manually adjusting a flow regulator controlled by an infusion set or using an existing infusion device flow rate control device to adjust a liquid flow rate when a patient uses a single-use infusion set to infuse a patient. It is not designed to accurately control the flow rate of the liquid medicine in the disposable infusion set.
  • the object of the present invention is to provide a low-cost ordinary infusion set and to perform the infusion set outside the infusion set hose. Control, the infusion device liquid flow rate control device that can accurately control the 3 ⁇ 4 speed of the liquid medicine.
  • the invention is also applicable to the principle of working with a single-use infusion set in terms of transporting and measuring fluid, such as accurate control of the blood flow rate of a single-use blood transfusion device.
  • the invention comprises a casing and a pusher with a roller mounted on the casing, and the pressing mechanism matched with the roller of the pusher is mounted on the casing by a positioner parallel to the roller, the pressing mechanism
  • the movable portion is connected to an elastic body that is fixedly connected to the casing at one end.
  • the pressing mechanism in the present invention may be in various forms.
  • the pressing mechanism is a pressing plate
  • the positioning device is a positioning shaft disposed at one end or the middle portion of the pressing plate, and one end of the pressing plate is connected with the elastic.
  • the squeezing mechanism is a slider
  • the locator is a guiding mechanism fixed on the casing
  • the guiding mechanism can be a structure such as a sliding rail or a chute or a slide rail or a sliding rod.
  • the pusher of the present invention can adopt a circular structure, and in this case, the pressing surface of the pressing mechanism used in conjunction with it can adopt a flat or smooth curved surface.
  • the outer edge of the flow ejector can also be connected by a curved surface and a flat surface so that one plane fits the pressing surface of the extrusion mechanism, and the pressing surface should be in a planar form. ;
  • the flow ejector of the present invention may be of the prior art or of the following constructions:
  • a structure of the ejector includes a bracket and a tracked roller mounted on the bracket.
  • Another type of flow ejector includes a bracket with a socket that is mounted in the socket by a roller support rod with a roller, and a spring is disposed between the roller support rod and the bottom of the socket. ;
  • an anti-displacement mechanism with an infusion set hose should be placed inside the casing or outside the casing.
  • the simplest method is to set up the pipe clamp.
  • the pipe clamp can be fixed to the casing or a mechanism separate from the casing, and can cooperate with the casing or other fixing structure in the casing to prevent displacement of the infusion pipe.
  • the invention has the beneficial effects that the extrusion mechanism and the roller to the infusion set hose are ensured by the combination of the pressing mechanism with the positioner and the elastic body and the pusher with the roller.
  • the equidistant pressing at the cross-sectional position makes it easy to achieve the liquid in the infusion set hose at the point where it is squeezed, so that the flow rate of the liquid in the infusion set is controlled by the infusion needle and the infusion.
  • the influence of gravity factors such as the vertical pressure difference between the liquid levels in the bottle becomes the influence of the rolling speed of the pusher roller on the ⁇ liquid hose, so that the ordinary infusion device is susceptible to external influences.
  • the gravity infusion is converted into a controllable push-flow infusion; the second is because the T positioner and the elastic material are used on the pressing mechanism, on the one hand, the extrusion mechanism ensures uniform extrusion of the infusion set hose, and the other side makes the rolling
  • the rolling flow of the shaft on the infusion set hose becomes very smooth, which ensures the uniform flow velocity of the liquid in the infusion set hose, avoids the intermittent fluctuation of the infusion, and controls the roller on the infusion set hose.
  • Rolling Speed provides the most basic technical guarantee for accurately controlling the flow rate of the liquid in the infusion set. It is possible to achieve accurate infusion using a low-cost common infusion set: thus providing a fast and high-precision infusion service for patients.
  • the motor that drives the flow ejector can be controlled by the prior art, and the control circuit is straight.
  • the utility model adjusts and displays the flow rate of the chemical liquid on the meter, and has the advantages of simple operation and accurate measurement.
  • the invention has the characteristics of simple overall structure and low manufacturing cost, and is beneficial to the popularization and application of the device.
  • Figure 1 is a front view of Embodiment 1;
  • Figure 2 is a cross-sectional view of the side of the embodiment 1;
  • Figure 3 is a partial cross-sectional view showing a top view of a portion of the pressure plate of the embodiment 1;
  • Figure 4 is a cross-sectional view of the pipe clamp of the embodiment 1;
  • Figure 5 is a front view of Embodiment 2.
  • Figure 6 is a cross-sectional view of the side of Embodiment 2.
  • Figure 7 is a cross-sectional view showing the infusion tube positioning mechanism of Embodiment 2.
  • Figure 8 is a left side view of Figure 7;
  • Figure 9 is a front elevational view of Embodiment 3.
  • Figure 10 is a partial cross-sectional view showing a top view of Embodiment 3.
  • Figure 11 is a partial cross-sectional view of the flow ejector of Embodiment 4.
  • control instrument 2. casing, 3. spring plate, 4. spring, 5. roller, 6. pusher, 7. pressure plate, 8. positioning shaft, 9. infusion set, 10. pipe card , 11. Wire, 12. Motor, 13. Rear cover, 14. Chute, 15. Roller support rod, 16. Spring.
  • the embodiment includes a casing 2, and the casing 2 includes a cavity having a motor 12 therein, and a control instrument 1 connected to the motor 12 through the wire 11 is fixed to the casing 2.
  • a bracket on the outside of the cavity, and a pusher 6 is mounted on the bracket.
  • the flow ejector 6 includes two rotating shafts, one of which is coupled to the motor 12.
  • a track is mounted on the rotating shaft, and the "R group roller 5 is mounted on the track through the shaft interval.
  • a press plate 7 is mounted on the casing 2 on the same side of the pusher 6 as the two rotating shafts, and one end of the pressing plate 7 is positioned parallel to the rotating shaft.
  • the shaft 8 is connected to the casing 2, and the other end is engaged with the lower end of the spring 4.
  • the upper end of the spring 4 is fixed on the plate body fixedly connected to the casing 2.
  • a pipe card 10 is disposed at the corresponding position.
  • the pipe card 10 is composed of two cards, and the two cards are connected by bolts and nuts.
  • a rolling extrusion surface can be formed on the surface of the pressure plate; a part of the hose of the infusion set is placed at the contact position between the pressing and the roller, and the diameter of the infusion tube of the infusion set is at the center line of the roller and the axis of the roller
  • the core wires are placed in a cross shape; one end of the elastic body on the pressure plate is in contact with the pressure plate, and the other end is in contact with the spring plate, and Pressed by the spring plate to form an elastic force that pushes the platen out, and the platen can press the infusion set hose on the roller under the elastic force, and when the roller is squeezed on the outer wall of the infusion set hose, It can push the liquid medicine in the hose to flow out in the direction of the roller pushing.
  • the pressure plate can disconnect the liquid in the infusion tube hose at the position where the roller and the pressure plate are pressed, so that the liquid on both sides of the pressed portion can no longer flow to each other.
  • the shaft slides forward along the infusion tube hose in such a squeeze state the liquid in the infusion device will flow as the roller slides, so that the flow rate of the liquid in the infusion set depends on the pusher roller. The speed of the taxi on the infusion set hose.
  • the pusher is connected to the driver, and the driver is connected to the control instrument through the wire, so that the sliding speed of the pusher roller on the infusion set hose depends on the movement law of the drive, and the movement law of the drive can pass the instrument
  • the control instrument indirectly controls the sliding speed of the pusher roller on the infusion set hose by directly controlling the ⁇ motion law of the drive, thereby realizing the use of the infusion set for the sputum. Accurate control of the flow rate of the liquid.
  • the embodiment includes a casing 2, and the casing 2 includes a cavity, and a bracket is arranged outside the body, and the pusher 6 is mounted on the bracket.
  • the flow ejector 6 includes a circular branch with a rotating shaft, a groove 5 is mounted in the groove on the side of the bracket, and a pressure plate 7 is mounted on the casing 2 above the flow ejector 6.
  • the portion of the lower surface of the pressure plate 7 corresponding to the flow ejector 6 is curved, and its curvature is smaller than the curvature of the circular support, and its span is larger than the diameter of the circular support.
  • One end of the pressure plate 7 is connected to the casing 2 through a shaft parallel to the rotating shaft, and the other end is engaged with the lower end of the spring 4, and the upper end of the spring 4 is fixed to the plate body fixedly coupled to the casing 2.
  • a pipe card 10 is provided at the side of the casing 2, corresponding to the gap between the pressure plate 7 and the flow ejector 6.
  • the tube card 10 has a stepped hole, and the side of the tube card 10 has an infusion tube placement opening.
  • the embodiment includes a casing 2 having a bracket on the casing 2, and a bracket _
  • a positioning chute 14 is fixed on the casing 1 on the side of the pusher 6 , and a slider is arranged in the slot. The upper part of the slider is matched with the spring, and the upper end of the spring is connected with the plate body fixed on the casing.
  • the other parts of this embodiment are the same as those of the first embodiment, and are no longer used.
  • Embodiment 4 As shown in Fig. 11, this embodiment includes a casing 2, and the casing 2 includes a cavity, and a bracket is disposed outside the cavity, and a pusher 6 is mounted on the bracket.
  • the pusher 6 includes a circular bracket with a rotating shaft, and the bracket is spaced apart from the radial direction, and each blind hole is provided with a roller support rod 15 on which the roller shaft 5 is mounted. .
  • the roller support rod 15 is connected to the bottom of the blind hole by a spring 16.
  • the other parts of the embodiment are the same as those of the embodiment 2 and will not be described again.

Description

输液器药液流速控制装置 技术领域
本发明为一种输液器药液流速控制装置。
背景技术
静脉输液是一种最常用的临床治疗方法， 是护理专业的一项常用给药治 疗技术。 临床上根据药物和患者情况不同配以适当的输液速度。 在医院中的 某些特种病人或特种药物， 必须要求微量低速准确输入， 否则， 如泉输液过 快， 可能会导致中毒， 更严重时会导致水肿和心力衰竭； 输液过慢则可能发 生药量不够， 使治疗受影响并给患者和护理工作增加不必要的负担。：常规临 床输液， 普遍采用一次性使用输液器挂瓶输液， 并用眼睛观察， 依靠调节流 量调节器来控制药滴的速度。 对输液精度要求较高的微量输液籴讲， 这种方 式不能达到要求。 医院的内科、 外科、 儿科、 心血管科、 急诊科和手术室， 尤其是 ICU和 ecu病房的输液在很多情况下必须进行准确输液。 为解决准 确输液的问题， 国内外很多医疗机构和科研院所很早就投入了大量的人力、 物力进行研究。 目前市场上常用的是 "指状控制装置"， 其有一根凸轮轴， 凸 轮轴上有多个 (一般为 12个)凸轮， 这些凸轮的运动规律相差一定的 ^度， 每 个凸轮与一个 "手指 "(即滑块)相连。工作时， 由电机带动凸轮轴转动，:使滑块 按照一定顺序和运动规律上下往复运动， 像波一样依次挤压一次性 用输液 器， 使输液管中的液体以一定的速度定向流动。 这种结构的装置因是依靠滑 块来依次挤压一次性使用输液器软管的， 各滑块间存在间隔， 容易 药液的 流速出现较大的波动， 使输液器内药液的流速变化幅度达， 尤其在低速输液 时很难做到准确； 同时为了能达到稍好一点的输液精度， 其需要配套成本较 高的专用的输液器， 专用输液器的成本一般是普通输液器的好几倍。 输液误 差大和使用成本高这两大问题严重影响着精密输液器控制装置的使用。
发明内容
本发明是针对目前市场上采用一次性使用输液器在为病人输液时， 依靠 输液器自身携带的流量调节器来进行人工调节或依靠现有的输液器流速控制 装置来进行药液流速调节等技术都不能做到对一次性使用输液器内药液的流 速进行准确控制的问题而设计的， 本发明的目的在于提供一种采用低成本的 普通输液器并在输液器软管外部对输液器进行控制， 即可对药液的 ¾速做到 准确控制的输液器药液流速控制装置。 本发明还可适用于在输送并 量流体 方面， 同一次性使用输液器工作原理基本相同的， 如一次性使用输血器血液 流速的准确控制。 确认本 本发明包括机壳及安装在机壳上、 带滚轴的推流器， 与推流器滚轴配合 的挤压机构通过使其与滚轴平行的定位器安装在机壳上， 挤压机构的活动部 分与一端同机壳固定连接的弹性物连接。 使用时， 使输液器软管由推流器和 挤压机构之间穿过， 开动推流器， 使其转动， 推流器上的滚轴作用于输液器 软管， 与挤压机构配合对输液器软管间隔挤压， 从而对输液器软管中的液体 的流动进行控制， 进而控制药液的流速。
本发明中的挤压机构可为多种形式， 如挤压机构为压板， 其定位器为设 置在压板一端或中部的定位轴， 压板的一端与弹性物连接。 或者所述的挤压 机构为滑块， 其定位器为固定在机壳上的导向机构， 该导向机构可为滑轨或 滑槽或滑道或滑杆等结构。
根据设计需要， 本发明中的推流器可采用圆形结构， 这时， 与其配合使 用的挤压机构的挤压面可以采用平面或平滑曲面。
推流器外缘也可以由弧面和平面间隔连接而成， 使其一个平面与挤压机 构的挤压面配合， 而此时挤压面应采用平面形式。 ；
本发明的推流器可采用现有技术， 或者采用下述几种结构中的 种： 推 流器一种结构包括支架和安装在支架上的带有滚轴的履带。 另一种推流器包 括带有插孔的支架， 通过带有滚轴的滚轴支撑杆装于插孔内， 滚轴支撑杆与 插孔底部之间装有弹簧。 ；
为防止在工作时， 由于推流器的运动使输液器软管移位， 应当在机壳内 或机壳外设置有输液器软管的防位移机构， 最简单的方法即是设置管卡。 管 卡可以固定在机壳上， 也可以是与机壳分离的机构， 它能与机壳或机壳内的 其它固定结构配合防止输液管的位移。具体工作时， 可使用一个或两^^管卡。
本发明的有益效果是， 一是由于采用了带有定位器和弹性物的挤压机构 与带有滚轴的推流器相结合的形式， 保证了挤压机构和滚轴对输液器软管在 其横截面位置上的等距离挤压， 很容易地实现了输液器软管内的液体在被挤 压处始终处于被截流状态， 使输液器内药液的流动速度由受输液针和输液瓶 内液面之间的垂直压差等重力因素的影响而变为了受推流器滚轴在 φ液器软 管上的滚动速度的影响， 从而为普通输液器从依靠容易受到外界因 影响的 重力式输液转变为可控制的推流式输液； 二是由于挤压机构上采用 T定位器 和弹性物， 一方面保证了挤压机构对输液器软管的均匀挤压， 另一 面又使 滚轴在输液器软管上的滚动推流变得非常平稳， 从而保证了输液器软管内药 液流动速度的均匀， 避免了输液的间歇性波动， 为通过控制滚轴在输液器软 管上的滚动速度从而能准确控制输液器内药液的流动速度提供了最基本的技 术保障， 为使用低成本的普通输液器即可实现准确输液提供了可能,：从而在 为病人提供快捷和高精度输液服务的同时并没有额外增加病人的医疗费用； 在使用时可以采用现有技术对带动推流器的电机进行控制， 通过控制电路直 接在仪表上调节并显示药液的流量， 操作简单， 计量准确； 此外， 本发明具 有整体结构简单、 制造成本低的特点， 有利于该装置的推广应用。
附图说明
图 1为实施例 1的主视图；
图 2为实施 1侧面的剖视图；
图 3为实施例 1压板部分俯视图的部分剖视图；
图 4为实施例 1管卡的剖视图；
图 5为实施例 2主视图；
图 6为实施例 2侧面的剖视图；
图 7为实施例 2中输液管定位机构的剖视图；
图 8为图 7的左视图；
图 9为实施例 3的主视图；
图 10为实施例 3俯视图的部分剖视图；
图 11为实施例 4的推流器的部分剖视图；
其中， 1.控制仪表， 2.机壳， 3.弹簧板， 4.弹簧， 5.滚轴， 6.推流器， 7. 压板， 8. 定位轴， 9.输液器， 10.管卡， 11. 导线， 12. 电机， 13.机 后盖， 14.滑槽， 15.滚轴支撑杆， 16.弹簧。
具体实施方式
实施例 1
如图 1-4所示， 本实施例包括机壳 2， 机壳 2包括一个腔体， 腔体内有电 机 12， 并有通过导线 11与电机 12连接的控制仪表 1固定在机壳 2上。 在腔 体外侧有一支架， 支架上安装推流器 6。 推流器 6包括两个转轴， 某中一个 转轴与电机 12连接。转轴上安装有履带， 履带上通过轴间隔安装有" r组滚轴 5。 在推流器 6上方与两转轴同侧的机壳 2上装有压板 7， 压板 7的一端通过 与转轴平行的定位轴 8与机壳 2连接， 另一端与弹簧 4下端配合， 弹簧 4的 上端固定在与机壳 2固定连接的板体上。 在机壳 1一侧、 与压板 7和推流器 6的间隙对应处设置有管卡 10。 管卡 10由两个卡片组成， 两卡片通过螺栓、 螺母连接。
下可在压板表面形成一段滚动挤压面； 输液器的部分软管放置在压舉和滚轴 之间的接触位置， 且三者接触处输液器软管的管径中心线与滚轴的轴心线成 交叉状放置； 压板上的弹性物一端与压板接触， 另一端与弹簧板相接触， 并 被弹簧板挤压形成推动压板外移的弹力， 压板在该弹力作用下可将输液器软 管挤压在滚轴上， 滚轴在此被挤压状态下在输液器软管外壁滚动时，，可推动 软管内的药液沿滚轴推动方向流出。 当弹性物产生的弹力达到一定程度， 压 板就可使输液器软管内的液体在滚轴与压板相挤压处被断开， 使被挤压处两 侧的液体不能再相互流动， 当滚轴沿着输液器软管以此种挤压状态向前滑动 时， 输液器内的液体就会随着滚轴的滑动而流动， 这样， 输液器内液体的流 速就取决于推流器滚轴在输液器软管上的滑行速度。推流器与驱动器相连接， 驱动器通过导线与控制仪表相连接， 这样， 推流器滚轴在输液器软管上的滑 行速度就取决于驱动器的运动规律， 而驱动器的运动规律是可以通 仪表来 进行控制的， 该装置实际工作时， 控制仪表通过直接控制驱动器的 φ动规律 来间接控制推流器滚轴在输液器软管上的滑动速度， 从而实现了对卞次性使 用输液器内药液流速的准确控制。
实施例 2
如图 5-8所示， 本实施例包括机壳 2， 机壳 2包括一个腔体， 在 体外侧 有一支架， 支架上安装推流器 6。 推流器 6包括带有转轴的圆形支 ^， 支架 侧面的槽内通过轴间隔安装有一组滚轴 5， 在推流器 6上方的机壳 2上装有 压板 7。 压板 7下表面与推流器 6对应的部分呈弧形， 其曲率小于圆形支架 的曲率， 其跨度大于圆形支架的直径。 压板 7的一端通过与转轴平行的轴与 机壳 2连接， 另一端与弹簧 4下端配合， 弹簧 4的上端固定在与机壳 2固定 连接的板体上。 在机壳 2—侧、 与压板 7和推流器 6的间隙对应处设置有管 卡 10。 管卡 10上带有台阶状孔， 管卡 10侧面带有输液管放置开口。 本实施 例的其它部分与实施例 1相同， 不再赘述。
实施例 3
如图 9、 10所示， 实施例包括机壳 2， 机壳 2上有一支架，支架 _|：安装推 流器 6， 推流器 6的结构与实施例 1相同。 在推流器 6—侧的机壳 1上固定 有定位滑槽 14, 槽内装有滑块， 滑块上方与弹簧配合， 弹簧的上端与固定在 机壳上的板体连接。 本实施例的其它部分与实施例 1相同， 不再赘 ^。
实施例 4 ' 如图 11所示， 本实施例包括机壳 2， 机壳 2包括一个腔体， 在腔体外侧 有一支架， 支架上安装推流器 6。 推流器 6包括带有转轴的圆形支架， 支架 上间隔设置有沿半径方向的盲孔， 每个盲孔内装有滚轴支撑杆 15， 滚轴支撑 杆 15上通过轴安装有滚轴 5。 滚轴支撑杆 15与盲孔底部之间通过弹簧 16连 接。 本实施例的其它部分与实施例 2相同， 不再赘述。

Claims

权 利 要 求
1、 一种输液器药液流速控制装置， 其特征是： 它包括机壳 （2)'及安装 在机壳（2) 上、 带滚轴 （5) 的推流器（6)， 与推流器（6)滚轴 （,5 )配合 的挤压机构通过使其与滚轴 （5)平行的定位器安装在机壳（2)上，'挤压机 构的活动部分与一端同机壳（2) 固定连接的弹性物连接。
2、根据权利要求 1所述的输液器药液流速控制装置， 其特征是: 所述的 挤压机构为压板 （7)， 其定位器为设置在压板一端或中部的定位轴 （8)， 压 板（7) 的一端与弹性物连接。
3、根据权利要求 1所述的输液器药液流速控制装置， 其特征是： 所述的 挤压机构为滑块， 其定位器为固定在机壳上的导向机构。
4、根据权利要求 3所述的输液器药液流速控制装置， 其特征是： 所述的 导向机构为滑槽 （14) 或滑杆。
5、根据权利要求 1或 2或 3或 4所述的输液器药液流速控制装 *， 其特 征是： 所述的推流器（6)呈圆形， 挤压机构的挤压面为平面或平滑 面。
6、根据权利要求 1或 2或 3或 4所述的输液器药液流速控 装 ， 其特 征是： 所述的推流器（6) 由弧面和平面间隔连接而成， 其一个平面与挤压机 构的挤压面配合， 挤压面为平面。
7、根据权利要求 1或 2或 3或 4所述的输液器药液流速控制装置， 其特 征是： 所述的推流器（6)包括支架和安装在支架上的带有滚轴（5) '的履带。
8、根据权利要求 1或 2或 3或 4所述的输液器药液流速控制装置， 其特 征是： 所述的推流器 （6)包括带有插孔的支架， 通过带有滚轴 （5 ) 的滚轴 支撑杆（15)装于插孔内，滚轴支撑杆（15)与插孔底部之间装有弹簧（16)。
9、根据权利要求 1或 2或 3或 4所述的输液器药液流速控制装置， 其特 征是： 机壳（2) 内或机壳（2)外设置有输液器管卡 （10)。
PCT/CN2007/001666 2006-05-22 2007-05-22 Device for controlling the medication fluid flowing speed of the fluid delivery apparatus WO2007134545A1 (en)

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