CN104288857B - A kind of medical infusion device - Google Patents

A kind of medical infusion device Download PDF

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CN104288857B
CN104288857B CN201410502947.2A CN201410502947A CN104288857B CN 104288857 B CN104288857 B CN 104288857B CN 201410502947 A CN201410502947 A CN 201410502947A CN 104288857 B CN104288857 B CN 104288857B
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infusion
chamber
liquid
left chamber
right chamber
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CN104288857A (en
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于丽
王宝典
顾惠茜
李中成
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Linyi Luozhuang District Talent Development Group Co ltd
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/158Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/168Means 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
    • A61M5/16831Monitoring, detecting, signalling or eliminating infusion flow anomalies
    • A61M5/1684Monitoring, detecting, signalling or eliminating infusion flow anomalies by detecting the amount of infusate remaining, e.g. signalling end of infusion
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/36Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests with means for eliminating or preventing injection or infusion of air into body

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  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Emergency Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

本发明公开了一种医用输液装置,包括储液盒体、隔板、导气管、液位传感器、进气阀、电机、控制器;隔板将储液盒体分成左腔室、右腔室;左腔室的体积大于右腔室的体积;隔板的底部设置有连通孔;所述的导气管呈漏斗状,开口较大的一端位于左腔室的底部,另一端位于左腔室的顶部外面;左腔室的顶部设置有加液孔,加液孔上设置有可拆卸塞子;所述的右腔室的顶部设置有进气孔;所述的右腔室的底部设置输液孔,所述的输液孔上设置有橡皮塞;还包括瓶塞穿刺器、滴斗、流速调节器、药液过滤器、输液软管、静脉针。本发明一种医用输液装置无论输液速度快慢,药液都能匀速稳定的滴下。

The invention discloses a medical infusion device, which comprises a liquid storage box, a partition, an air guide tube, a liquid level sensor, an air intake valve, a motor, and a controller; the partition divides the liquid storage box into a left chamber and a right chamber The volume of the left chamber is greater than the volume of the right chamber; the bottom of the partition is provided with a communication hole; the airway is funnel-shaped, and the larger end of the opening is located at the bottom of the left chamber, and the other end is located at the bottom of the left chamber. Outside the top; the top of the left chamber is provided with a liquid filling hole, and a detachable plug is provided on the liquid filling hole; the top of the right chamber is provided with an air inlet; the bottom of the right chamber is provided with an infusion hole, The infusion hole is provided with a rubber stopper; it also includes a bottle stopper piercer, a dropping funnel, a flow rate regulator, a liquid medicine filter, an infusion hose, and an intravenous needle. The medical infusion device of the present invention can drip medicine liquid at a uniform speed and stably regardless of the infusion speed.

Description

一种医用输液装置A medical infusion device

技术领域technical field

本发明涉及医疗器械技术领域,具体涉及到一种医用输液装置。The invention relates to the technical field of medical instruments, in particular to a medical transfusion device.

背景技术Background technique

医用输液瓶是用于病人输液时装所输人体内医用配置的液体的瓶子。输液器是用于静脉输液的经过无菌处理的、建立静脉与药液之间通道的常见的一次性的医疗耗材。一般由静脉针、护帽、输液软管、药液过滤器、流速调节器、滴斗、瓶塞穿刺器、进气管、空气过滤器连接组成。在大气压力作用下,输液瓶内液体顺着较细的输液软管流入滴斗,当滴斗水柱压力大于静脉压时,瓶内的液体顺着软管流入静脉。医务人员使用前检查一次性输液器的消毒有效期及包装有无漏气及其他异常,取出输液器,将圆锥接头部分插入输液瓶,挂输液瓶于输液杆上,排气至药液流至输液管下端,关紧调节器,再将静脉针刺入消毒好的静脉,固定好之后,解开止血带,调整流速。The medical infusion bottle is a bottle of liquid that is used for infusion in the human body when the patient is infused. The infusion set is a common disposable medical consumable that is used for intravenous infusion after aseptic treatment to establish a channel between the vein and the liquid medicine. Generally, it is composed of a venous needle, a protective cap, an infusion hose, a liquid medicine filter, a flow rate regulator, a drip funnel, a cork puncturer, an air inlet pipe, and an air filter connection. Under the action of atmospheric pressure, the liquid in the infusion bottle flows into the drip funnel along the thinner infusion hose, and when the water column pressure in the drip funnel is greater than the venous pressure, the liquid in the bottle flows into the vein along the hose. Before use, the medical personnel check the validity period of disinfection of the disposable infusion set and whether there is any air leakage or other abnormalities in the packaging, take out the infusion set, insert the conical joint part into the infusion bottle, hang the infusion bottle on the infusion rod, and exhaust until the medicine liquid flows to the infusion Close the regulator at the lower end of the tube, and then insert the venous needle into the sterilized vein. After fixing it, untie the tourniquet and adjust the flow rate.

现有的输液器存在以下问题:第一,刚开始的时候输液管中的药液流速较快,随着药液流出,瓶中的液柱稍有降低,上方气体体积稍有变大,压强稍有减小,使得瓶口处的总压强稍小于外界大气压,外大气压强就将空气从进气管压入瓶中补充,使瓶口处的压强基本上保持在一个大气压,使药液能匀速稳定地滴下,不随瓶中药液的逐渐减少再改变.而但是开始时瓶中气体的压强大约为一个大气压,瓶口处的压强大于一个大气压,所以开始的一段时间内总是滴得很快,容易给病人身体带来不适。第二,输液速度较快时,输液瓶中的液位短时间变化较大,由于进气管设置在瓶塞穿刺器上,进气管的进气通道非常细,空气就无法及时的通过进气管进入输液瓶内补充,从而使得输液瓶口处的压强时变化的而不是恒定的,因此会出现药液无法匀速稳定的滴下的现象。The existing infusion set has the following problems: first, the flow rate of the liquid medicine in the infusion tube is faster at the beginning, and as the liquid medicine flows out, the liquid column in the bottle decreases slightly, the volume of the gas above slightly increases, and the pressure increases. Slightly reduced, so that the total pressure at the bottle mouth is slightly lower than the external atmospheric pressure, and the external atmospheric pressure will press air into the bottle from the intake pipe to supplement, so that the pressure at the bottle mouth is basically maintained at an atmospheric pressure, so that the liquid medicine can be uniform. It drips steadily and does not change with the gradual reduction of the liquid medicine in the bottle. However, at the beginning, the pressure of the gas in the bottle is about one atmosphere, and the pressure at the mouth of the bottle is higher than one atmosphere, so it always drips quickly in the first period of time , It is easy to bring discomfort to the patient's body. Second, when the infusion speed is fast, the liquid level in the infusion bottle changes greatly in a short time. Since the air intake pipe is set on the bottle stopper piercer, the air intake passage of the air intake pipe is very thin, and the air cannot enter through the air intake pipe in time. Supplement in the infusion bottle, so that the pressure at the mouth of the infusion bottle changes instead of being constant, so the phenomenon that the medicinal solution cannot be dripped at a uniform speed and stability will occur.

如何保证输液时,不管输液速度是快,还是慢,药液都能够匀速稳定的滴下是一个很值得研究和解决的技术问题。How to ensure that during the infusion, no matter whether the infusion speed is fast or slow, the medicinal solution can be dripped at a uniform speed and is a technical problem worthy of research and solution.

目前临床用的输液器,因没有可固定放置静脉穿刺针的装置,护士在血管穿刺前,对穿刺点皮肤消毒时,把静脉穿刺针,悬挂在输液架上,容易坠落而扎伤护士和患者,并且造成静脉穿刺针容易受污染的缺陷。Currently, clinical infusion sets do not have a fixed device for placing venipuncture needles. When nurses sterilize the skin at the puncture point before blood vessel puncture, they hang the venipuncture needle on the infusion stand, which is easy to fall and hurt nurses and patients. , and cause the defect that the venipuncture needle is easily contaminated.

还有,输液过程中需要另外添加药物比较麻烦。Also have, need to add medicine cumbersome in addition in the transfusion process.

发明内容Contents of the invention

本发明要解决的技术问题:第一,现有的输液器在开始的一段时间内,药液总是滴得很快,无法匀速稳定的滴下,容易给病人身体带来不适;并且输液速度较快时,也容易出现药液无法匀速稳定的滴下的现象。第二,目前临床用的输液器,因没有可固定放置静脉穿刺针的装置,护士在血管穿刺前,对穿刺点皮肤消毒时,把静脉穿刺针,悬挂在输液架上,容易坠落而扎伤护士和患者,并且造成静脉穿刺针容易受污染的缺陷。第三,输液过程中需要另外添加药物比较麻烦。The technical problems to be solved by the present invention are as follows: first, in the initial period of time of the existing infusion set, the liquid medicine is always dripped very quickly, which cannot be dripped at a uniform speed and is easy to bring discomfort to the patient; and the infusion speed is relatively fast. When it is fast, it is also prone to the phenomenon that the liquid medicine cannot be dripped at a uniform speed and stably. Second, the current clinical infusion set, because there is no device that can fix the venipuncture needle, the nurse hangs the venipuncture needle on the infusion stand when disinfecting the skin of the puncture point before blood vessel puncture, which is easy to fall and cause injury nurses and patients, and has the disadvantage of making venipuncture needles susceptible to contamination. The 3rd, it is cumbersome to need to add medicine additionally in the transfusion process.

为了解决以上技术问题,本发明的技术方案如下:一种医用输液装置,包括储液盒体、隔板、导气管、液位传感器、进气阀、电机、控制器;所述的隔板将储液盒体分成左腔室、右腔室;左腔室的体积大于右腔室的体积;所述的隔板的底部设置有连通孔;In order to solve the above technical problems, the technical solution of the present invention is as follows: a medical infusion device, including a liquid storage box, a partition, an air guide tube, a liquid level sensor, an air intake valve, a motor, and a controller; the partition will The liquid storage box is divided into a left chamber and a right chamber; the volume of the left chamber is greater than that of the right chamber; the bottom of the partition is provided with a communication hole;

所述的导气管呈漏斗状,开口较大的一端位于左腔室的底部,另一端位于左腔室的顶部外面;导气管位于左腔室的顶部外面的端口处设置有进气阀;所述的液位传感器设置在右腔室的侧壁内表面的中间位置;The air guide tube is funnel-shaped, and one end with a larger opening is located at the bottom of the left chamber, and the other end is located outside the top of the left chamber; the port of the air guide tube located outside the top of the left chamber is provided with an air intake valve; The liquid level sensor described above is arranged at the middle position of the inner surface of the side wall of the right chamber;

所述的液位传感器检测到的信号输入到控制器,控制器控制电机打开或者关闭进气阀;The signal detected by the liquid level sensor is input to the controller, and the controller controls the motor to open or close the intake valve;

所述的左腔室的顶部设置有加液孔,所述的加液孔上设置有可拆卸塞子;所述的右腔室的顶部设置有进气孔;所述的右腔室的底部设置输液孔,所述的输液孔上设置有橡皮塞;The top of the left chamber is provided with a liquid filling hole, and the described liquid filling hole is provided with a detachable plug; the top of the right chamber is provided with an air inlet; the bottom of the right chamber is provided with An infusion hole, the infusion hole is provided with a rubber stopper;

还包括瓶塞穿刺器、滴斗、流速调节器、药液过滤器、输液软管、静脉针;所述的输液软管的一端设置瓶塞穿刺器,另一端设置静脉针;所述的输液软管上设置滴斗、流速调节器、药液过滤器。It also includes a cork puncturer, a dropping funnel, a flow rate regulator, a liquid medicine filter, an infusion hose, and a venous needle; one end of the infusion hose is provided with a cork puncturer, and the other end is provided with a venous needle; the infusion A drip funnel, a flow rate regulator and a liquid medicine filter are arranged on the hose.

还包括加药管、海绵球体;所述的滴斗上设置有加药管,加药管设置有可拆卸的盖子;所述的海绵球体设置在所述的输液软管上面。It also includes a medicine feeding tube and a sponge ball; the dropping funnel is provided with a medicine feeding tube, and the medicine feeding tube is provided with a detachable cover; the sponge ball is arranged on the above-mentioned infusion hose.

进一步更加优选的技术方案,所述的控制器采用AT89S51单片机。In a further more preferred technical solution, the described controller adopts AT89S51 single-chip microcomputer.

进一步更加优选的技术方案,所述的左腔室的体积为800毫升,右腔室的体积为10毫升。In a further more preferred technical solution, the volume of the left chamber is 800 milliliters, and the volume of the right chamber is 10 milliliters.

储液盒体、隔板、导气管所组成的装置统称:储液装置;The device composed of liquid storage box, partition and air duct is collectively referred to as: liquid storage device;

瓶塞穿刺器、滴斗、流速调节器、药液过滤器、输液软管、静脉针所组成的装置统称:输液部件。The device composed of cork piercer, dropping funnel, flow rate regulator, liquid medicine filter, infusion hose, and venous needle is collectively referred to as: infusion parts.

与现有技术方案相比,本发明的有益效果:第一,本发明提出的一种医用输液装置在输液最开始的很短时间药液就能匀速稳定的滴下,不会给病人身体带来不适;第二,即使输液速度较快,药液仍然会匀速稳定的滴下;第三,输液孔上设置有橡皮塞,这样可以保证瓶塞穿刺器不是固定连接输液孔的,输液部件坏了的话可以很容易替换,并且现有技术的输液器产品可以替代本发明中的输液部件;第四,本发明的输液部件与现有的输液器的区别就是:现有的输液器的瓶塞穿刺器上面均设置有进气管,进气管上面还设置有空气过滤装置,现有的输液器的进气管部分和空气过滤装置部分生产工艺很复杂,本发明取消了进气管和空气过滤装置大大降低了生产工艺的复杂性;第五,导气管呈漏斗状有利于更多空气进入到左腔室内,从而使得右腔室的液位几乎不变,几乎恒定不变;第六,采用液位传感器检测,控制器根据液位传感器检测的数据,迅速控制进气阀的打开与关闭,可以使得右腔室的液位变化非常小,几乎恒定不变。第七,护士在血管穿刺前,对穿刺点皮肤消毒时,把静脉穿刺针插入海绵球体中,避免了把静脉穿刺针悬挂在输液架上,容易坠落而扎伤护士和患者,并且造成静脉穿刺针容易受污染这一技术问题。第八,输液过程中通过滴斗能够很容易添加药物。Compared with the existing technical solutions, the beneficial effects of the present invention are as follows: First, the medical infusion device proposed by the present invention can drip the medicine at a uniform speed and stably in a very short time at the very beginning of the infusion without bringing any harm to the patient's body. Discomfort; second, even if the infusion speed is fast, the liquid medicine will still drip at a constant speed; third, there is a rubber stopper on the infusion hole, which can ensure that the bottle stopper piercer is not fixedly connected to the infusion hole, and if the infusion part is broken It can be easily replaced, and the infusion set product of the prior art can replace the infusion part in the present invention; the 4th, the difference between the infusion part of the present invention and the existing infusion set is exactly: the bottle stopper piercer of the existing infusion set Air inlet pipes are arranged above, and an air filter device is also arranged on the air inlet pipe. The production process of the air inlet pipe part and the air filter device part of the existing infusion set is very complicated. The present invention cancels the air inlet pipe and the air filter device and greatly reduces production The complexity of the process; fifth, the funnel shape of the air duct is conducive to more air entering the left chamber, so that the liquid level in the right chamber is almost constant and almost constant; sixth, the liquid level sensor is used for detection, The controller quickly controls the opening and closing of the intake valve according to the data detected by the liquid level sensor, so that the liquid level in the right chamber changes very little and is almost constant. Seventh, before the blood vessel puncture, the nurse inserts the venipuncture needle into the sponge ball when disinfecting the skin at the puncture point, which avoids hanging the venipuncture needle on the infusion stand, which is easy to fall and hurt the nurse and the patient, and causes venipuncture. The technical problem of needles being susceptible to contamination. Eighth, the medicine can be easily added through the drip funnel during the infusion process.

附图说明Description of drawings

图1是本发明的结构示意图。Fig. 1 is a structural schematic diagram of the present invention.

图2是现有输液器与输液瓶连接示意图(现有的输液都采用这种方式)。Fig. 2 is a schematic diagram of the connection between an existing infusion set and an infusion bottle (all existing infusions adopt this method).

其中,1 是加液孔;2 是进气孔;3 是导气管;4 是连通孔;5 是输液孔;6是瓶塞穿刺器;7 是滴斗;8 是流速调节器;9 是药液过滤器;10 是静脉针;11是液位传感器;12 是输液瓶;13 是输液器;14 是加药管,15 是海绵球体。Among them, 1 is the filling hole; 2 is the air inlet; 3 is the air guide tube; 4 is the communication hole; 5 is the infusion hole; 6 is the cork puncturer; 10 is a venous needle; 11 is a liquid level sensor; 12 is an infusion bottle; 13 is an infusion set; 14 is a medicine adding tube, and 15 is a sponge ball.

具体实施方式detailed description

下面结合附图对本发明作进一步说明。The present invention will be further described below in conjunction with accompanying drawing.

如图2所示,现有的输液方法都是将输液器的瓶塞穿刺器直接插入到输入瓶中,为了实现输液匀速稳定,现有的常规思维都是不断改进输液器的结构,本发明打破常规思维,采用了储液装置,将输液瓶中的药液倒入到储液装置中,不再将注意力放在输液器上面,而是通过储液装置来实现输液的匀速稳定。As shown in Figure 2, the existing infusion method is to directly insert the bottle stopper piercer of the infusion set into the input bottle. In order to achieve uniform and stable infusion, the existing conventional thinking is to continuously improve the structure of the infusion set. Break the conventional thinking, adopt the liquid storage device, pour the medicinal liquid in the infusion bottle into the liquid storage device, no longer focus on the infusion device, but use the liquid storage device to realize the uniform speed and stability of the infusion.

实施例1:Example 1:

如图1所示:一种医用输液装置,包括储液盒体、隔板、导气管3、液位传感器、进气阀、电机、控制器;隔板将储液盒体分成左腔室、右腔室;左腔室的体积大于右腔室的体积;隔板的底部设置有连通孔4;As shown in Figure 1: a medical infusion device, including a liquid storage box, a partition, an air guide tube 3, a liquid level sensor, an air intake valve, a motor, and a controller; the partition divides the liquid storage box into a left chamber, Right chamber; the volume of the left chamber is greater than the volume of the right chamber; the bottom of the partition is provided with a communicating hole 4;

所述的导气管3呈漏斗状,开口较大的一端位于左腔室的底部,另一端位于左腔室的顶部外面;导气管3位于左腔室的顶部外面的端口处设置有进气阀;所述的液位传感器设置在右腔室的侧壁内表面的中间位置;The air guide tube 3 is funnel-shaped, one end with a larger opening is located at the bottom of the left chamber, and the other end is located outside the top of the left chamber; the port of the air guide tube 3 located outside the top of the left chamber is provided with an air inlet valve ; The liquid level sensor is arranged in the middle of the inner surface of the side wall of the right chamber;

所述的液位传感器11检测到的信号输入到控制器,控制器控制电机打开或者关闭进气阀;The signal detected by the liquid level sensor 11 is input to the controller, and the controller controls the motor to open or close the intake valve;

左腔室的顶部设置有加液孔1,所述的加液孔1上设置有可拆卸塞子;所述的右腔室的顶部设置有进气孔2;所述的右腔室的底部设置输液孔5,所述的输液孔5上设置有橡皮塞;The top of the left chamber is provided with a filling hole 1, and the described filling hole 1 is provided with a detachable plug; the top of the right chamber is provided with an air inlet 2; the bottom of the right chamber is provided with Infusion hole 5, said infusion hole 5 is provided with a rubber stopper;

还包括瓶塞穿刺器6、滴斗7、流速调节器8、药液过滤器9、输液软管、静脉针10;所述的输液软管的一端设置瓶塞穿刺器,另一端设置静脉针;所述的输液软管上设置滴斗、流速调节器、药液过滤器。It also includes a bottle stopper puncturer 6, a dropping funnel 7, a flow rate regulator 8, a liquid medicine filter 9, an infusion hose, and a venous needle 10; one end of the infusion hose is provided with a cork puncturer, and the other end is provided with a venous needle ; The infusion hose is provided with a drip funnel, a flow rate regulator, and a liquid medicine filter.

还包括加药管14、海绵球体15;滴斗上设置有加药管14,加药管设置有可拆卸的盖子;It also includes a dosing tube 14 and a sponge sphere 15; a dosing tube 14 is provided on the dropping funnel, and a detachable cover is provided on the dosing tube;

所述的海绵球体15设置在所述的输液软管上面。The sponge ball 15 is arranged above the infusion hose.

实施例2:在实施例1的基础上,控制器采用AT89S51单片机。Embodiment 2: On the basis of Embodiment 1, the controller adopts AT89S51 single-chip microcomputer.

实施例3:在实施例1的基础上,左腔室的体积为800毫升,右腔室的体积为10ml。Embodiment 3: On the basis of embodiment 1, the volume of the left chamber is 800 milliliters, and the volume of the right chamber is 10 ml.

本发明的工作原理:向左腔室内加完药液,右腔室内的药液淹没液位传感器,由于右腔室的体积非常小,因此液位很快就会与右腔室的液位传感器持平,一旦液面高度低于液位传感器的高度,控制器控制进气阀使得空气通过导气管迅速进入左腔室内,左腔室底部处的压强会增大,这时左腔室内的液体会通过连通孔进入到右腔室,然后右腔室液位与液位传感器再次持平,所以右腔室的液面高度几乎一直恒定不变,因此输液孔处的压强是恒定不变的,也由于右腔室的体积非常小,因此在输液最开始很短时间,药液就能匀速稳定的滴下。由于专门设置了导气管并且导气管呈漏斗状,因此空气能够很容易进入左腔室内,因此即使输液速度很快,右腔室的液面也能够保持恒定。The working principle of the present invention: after adding liquid medicine to the left chamber, the liquid medicine in the right chamber will submerge the liquid level sensor. Since the volume of the right chamber is very small, the liquid level will soon be equal to that of the liquid level sensor in the right chamber. Once the liquid level is lower than the height of the liquid level sensor, the controller controls the intake valve so that the air quickly enters the left chamber through the air duct, the pressure at the bottom of the left chamber will increase, and the liquid in the left chamber will Enter the right chamber through the communication hole, and then the liquid level in the right chamber is equal to the liquid level sensor again, so the liquid level in the right chamber is almost constant all the time, so the pressure at the infusion hole is constant, and because The volume of the right chamber is very small, so the medicine solution can be dripped at a uniform speed and stably in a very short time at the beginning of the infusion. Because the airway tube is specially arranged and the airway tube is funnel-shaped, air can easily enter the left chamber, so even if the infusion rate is fast, the liquid level in the right chamber can also be kept constant.

本发明的使用方法:取下加液孔上设置的可拆卸塞子,将药液加入到左腔室内,然后盖上可拆卸塞子,将瓶塞穿刺器插入输液孔上设置的橡皮塞内,这时输液软管内的药液会匀速的滴下,然后通过流速调节器改变输液的速度。The use method of the present invention: remove the detachable stopper provided on the liquid filling hole, add the medicinal liquid into the left chamber, then cover the detachable stopper, insert the bottle stopper puncturer into the rubber stopper provided on the infusion hole, this The liquid medicine in the infusion hose will drop at a constant speed, and then change the infusion speed through the flow rate regulator.

Claims (3)

1.一种医用输液装置,其特征在于,包括储液盒体、隔板、导气管、液位传感器、进气阀、电机、控制器;所述的隔板将储液盒体分成左腔室、右腔室;左腔室的体积大于右腔室的体积;所述的隔板的底部设置有连通孔;所述的导气管呈漏斗状,开口较大的一端位于左腔室的底部,另一端位于左腔室的顶部外面;导气管位于左腔室的顶部外面的端口处设置有进气阀;所述的液位传感器设置在右腔室的侧壁内表面的中间位置;1. A medical infusion device, characterized in that it comprises a liquid storage box, a partition, an air guide tube, a liquid level sensor, an air intake valve, a motor, and a controller; the partition divides the liquid storage box into a left cavity chamber, right chamber; the volume of the left chamber is greater than the volume of the right chamber; the bottom of the partition is provided with a communication hole; the air duct is funnel-shaped, and the end with a larger opening is located at the bottom of the left chamber , the other end is located outside the top of the left chamber; the air guide tube is located at the port outside the top of the left chamber with an inlet valve; the liquid level sensor is arranged in the middle of the inner surface of the side wall of the right chamber; 所述的液位传感器检测到的信号输入到控制器,控制器控制电机打开或者关闭进气阀;The signal detected by the liquid level sensor is input to the controller, and the controller controls the motor to open or close the intake valve; 所述的左腔室的顶部设置有加液孔,所述的加液孔上设置有可拆卸塞子;所述的右腔室的顶部设置有进气孔;所述的右腔室的底部设置输液孔,所述的输液孔上设置有橡皮塞;The top of the left chamber is provided with a liquid filling hole, and the described liquid filling hole is provided with a detachable plug; the top of the right chamber is provided with an air inlet; the bottom of the right chamber is provided with An infusion hole, the infusion hole is provided with a rubber stopper; 还包括瓶塞穿刺器、滴斗、流速调节器、药液过滤器、输液软管、静脉针;所述的输液软管的一端设置瓶塞穿刺器,另一端设置静脉针;所述的输液软管上设置滴斗、流速调节器、药液过滤器;It also includes a cork puncturer, a dropping funnel, a flow rate regulator, a liquid medicine filter, an infusion hose, and a venous needle; one end of the infusion hose is provided with a cork puncturer, and the other end is provided with a venous needle; the infusion The hose is equipped with a drip funnel, a flow rate regulator, and a liquid medicine filter; 还包括加药管、海绵球体;It also includes dosing tubes and sponge balls; 所述的滴斗上设置有加药管,加药管设置有可拆卸的盖子;The dropping funnel is provided with a dosing tube, and the dosing tube is provided with a detachable cover; 所述的海绵球体设置在所述的输液软管上面。The sponge ball is arranged above the infusion hose. 2.根据权利要求1所述的一种医用输液装置,其特征在于,所述的控制器采用AT89S51单片机。2. A kind of medical infusion device according to claim 1, is characterized in that, described controller adopts AT89S51 single-chip microcomputer. 3.根据权利要求1所述的一种医用输液装置,其特征在于,所述的左腔室的体积为800毫升,右腔室的体积为10毫升。3. A medical infusion device according to claim 1, wherein the volume of the left chamber is 800 milliliters, and the volume of the right chamber is 10 milliliters.
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