CN104491939A - Auxiliary device for enteral nutrition liquid instillation - Google Patents
Auxiliary device for enteral nutrition liquid instillation Download PDFInfo
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- CN104491939A CN104491939A CN201510019212.9A CN201510019212A CN104491939A CN 104491939 A CN104491939 A CN 104491939A CN 201510019212 A CN201510019212 A CN 201510019212A CN 104491939 A CN104491939 A CN 104491939A
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- 235000016709 nutrition Nutrition 0.000 title claims description 14
- 230000035764 nutrition Effects 0.000 title claims description 5
- 239000007788 liquid Substances 0.000 title claims description 3
- 235000015097 nutrients Nutrition 0.000 claims abstract description 151
- 238000010438 heat treatment Methods 0.000 claims abstract description 36
- 230000000968 intestinal effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 12
- 238000001802 infusion Methods 0.000 abstract description 9
- 210000000936 intestine Anatomy 0.000 abstract description 3
- 239000000243 solution Substances 0.000 description 140
- 238000005192 partition Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 235000005911 diet Nutrition 0.000 description 1
- 230000037213 diet Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000001035 gastrointestinal tract Anatomy 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 210000004347 intestinal mucosa Anatomy 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 235000006180 nutrition needs Nutrition 0.000 description 1
- 235000016236 parenteral nutrition Nutrition 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- A61M1/0023—
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Abstract
本发明公开了一种肠内营养液滴注辅助装置，由营养液瓶、营养液瓶口、橡胶塞、营养液瓶盖、营养液导管、圆桶形的活塞杆、环形橡胶活塞、加热器、温度传感器、温度控制器构成，该肠内营养液滴注辅助装置可同时进行营养液滴注中的预热、升温和恒温控制，可将低温的营养液通过预热、升温和恒温控制后进行营养液滴注，利用该装置进行营养液滴注，不需要长时间的预加热过程，同时还可实现营养液的全程恒温滴注。
The invention discloses an auxiliary device for instilling nutrient solution in the intestines, which consists of a nutrient solution bottle, a nutrient solution bottle mouth, a rubber plug, a nutrient solution bottle cap, a nutrient solution conduit, a barrel-shaped piston rod, an annular rubber piston, and a heater. , a temperature sensor, and a temperature controller. The enteral nutrient solution infusion auxiliary device can simultaneously perform preheating, heating and constant temperature control in the nutrient solution infusion. For instillation of nutrient solution, using the device for infusion of nutrient solution does not require a long preheating process, and at the same time can realize the whole process of constant temperature infusion of nutrient solution.
Description
技术领域：Technical field:
本发明涉及一种肠内营养液滴注辅助装置，特别是一种肠内营养液滴注、控温一体的营养液滴注辅助装置，该辅助装置可以用于对患者进行的各种肠内营养液的辅助控温和滴注。The invention relates to an auxiliary device for instillation of nutrient solution in the intestines, in particular to an auxiliary device for the infusion of nutrient solution in the intestines, which is integrated with temperature control. The auxiliary device can be used for various intestinal Auxiliary temperature control and infusion of nutrient solution.
背景技术：Background technique:
肠内营养是指经胃肠道提供营养素的营养支持方式，它不仅能用口服或管饲方法提供人体全部营养需求和补充自然饮食及肠外营养支持的不足，还能有效地维护肠道黏膜的完整性，降低肠源性感染的发生率，营养液通常是低温冷藏保存，在给患者营养液滴注前需要对营养液进行加热或在室温环境放置若干小时进行温度平衡，以减少对患者带来的副作用。现有加热方式是提前24小时取出营养液并放置于室温环境使营养液与环境温度平衡，或将从低温环境取出的营养液先放入热水中或通过其他加热手段对营养液进行预热加温，整个过程耗费时间较长，容易造成营养液变质，并且在营养液滴注过程中也不能持续保持适宜的温度，在营养液滴注的初始阶段营养液温度较高，在营养液滴注的中后阶段营养液温度较低，不能实现营养液滴注过程的全程恒温控制。Enteral nutrition refers to the nutritional support method that provides nutrients through the gastrointestinal tract. It can not only provide all the nutritional needs of the human body and supplement the deficiency of natural diet and parenteral nutrition support by oral or tube feeding, but also effectively maintain the intestinal mucosa. The integrity of the nutrition solution can reduce the incidence of enterogenous infection. The nutrient solution is usually stored in low-temperature refrigeration. Before instilling the nutrient solution to the patient, it is necessary to heat the nutrient solution or place it at room temperature for several hours for temperature balance to reduce the impact on the patient. side effects. The existing heating method is to take out the nutrient solution 24 hours in advance and place it in a room temperature environment to balance the nutrient solution with the ambient temperature, or put the nutrient solution taken out from a low temperature environment into hot water or preheat the nutrient solution by other heating means Heating, the whole process takes a long time, it is easy to cause the deterioration of the nutrient solution, and it cannot continue to maintain a suitable temperature during the infusion of the nutrient solution. The temperature of the nutrient solution is relatively high in the initial stage of the nutrient solution infusion. The temperature of the nutrient solution in the middle and later stages of injection is relatively low, and the whole process of constant temperature control of the nutrient solution dripping process cannot be realized.
发明内容：Invention content:
为了避免营养液在长时间预加热过程中变质和实现营养液滴注过程的全程恒温控制，本发明对现有营养液滴注装置进行了改进，提出了一种可同时进行预热、升温和恒温控制的营养液滴注装置，该营养液滴注装置可将低温的营养液通过预热、升温和恒温控制后进行营养液滴注，利用该装置进行营养液滴注，不需要长时间的预加热过程，同时还可实现营养液的全程恒温滴注。In order to avoid the deterioration of the nutrient solution during the long-term preheating process and to realize the whole process of constant temperature control of the nutrient solution dripping process, the present invention improves the existing nutrient solution dripping device, and proposes a device that can simultaneously perform preheating, heating and heating. Constant temperature controlled nutrient solution instillation device, the nutrient solution instillation device can preheat, heat up and constant temperature control the low temperature nutrient solution to instill the nutrient solution. Using this device to instill the nutrient solution does not require a long time The preheating process can also realize the constant temperature infusion of the nutrient solution.
本发明解决其技术问题所采用的技术方案是：将圆柱形的营养液瓶的内腔通过瓶体外壁、预热腔隔离壁和瓶体内壁由外向内的分割为营养液腔、预热腔和升温加热腔三个腔体，营养液瓶上端的圆柱形的营养液瓶口的瓶口外壁和瓶口内壁之间设置有一个圆柱形弹簧，营养液腔与营养液瓶口相通，营养液可从营养液瓶口倒入营养液腔内，在营养液腔和预热腔之间的预热腔隔离壁的下部开有营养液流通口，营养液腔内的营养液可通过该营养液流通口流入预热腔内，The technical solution adopted by the present invention to solve the technical problem is: the inner chamber of the cylindrical nutrient solution bottle is divided into a nutrient solution chamber and a preheating chamber through the outer wall of the bottle, the partition wall of the preheating chamber and the inner wall of the bottle from outside to inside. There are three cavities with the heating chamber and the heating chamber. A cylindrical spring is arranged between the outer wall of the cylindrical nutrient solution bottle mouth and the inner wall of the bottle mouth at the upper end of the nutrient solution bottle. The nutrient solution chamber communicates with the nutrient solution bottle mouth. The nutrient solution can be poured into the nutrient solution cavity from the mouth of the nutrient solution bottle. There is a nutrient solution flow port at the lower part of the partition wall of the preheating cavity between the nutrient solution cavity and the preheating cavity, and the nutrient solution in the nutrient solution cavity can pass through the nutrient solution. The flow port flows into the preheating chamber,
在升温加热腔的上端设置有一个橡胶塞，用来隔离升温加热腔和预热腔，避免预热腔内的营养液通过升温加热腔的上端流入升温加热腔内，在升温加热腔的下端还设置有一个橡胶塞，上述两个橡胶塞将升温加热腔隔离成一个密闭的空气腔，一个圆环形的加热器、一个圆环形的温度控制器和一个温度传感器被设置在该密闭的空气腔内，温度控制器位于加热器的下端，温度传感器与温度控制器电连接，电源线的一端与电源插头电连接，电源线的另一端穿过升温加热腔下端设置的橡胶塞与温度控制器电连接，一根倒U形的营养液导管的一端被设置在预热腔内，倒U形的营养液导管的另一端穿过升温加热腔上端设置的橡胶塞经过升温加热腔从升温加热腔下端设置的橡胶塞穿出营养液瓶，A rubber stopper is arranged on the upper end of the heating chamber for isolating the heating chamber and the preheating chamber to prevent the nutrient solution in the preheating chamber from flowing into the heating chamber through the upper end of the heating chamber. A rubber stopper is provided, and the above two rubber stoppers isolate the heating chamber into a closed air cavity, and a circular heater, a circular temperature controller and a temperature sensor are set in the closed air cavity In the chamber, the temperature controller is located at the lower end of the heater, the temperature sensor is electrically connected to the temperature controller, one end of the power cord is electrically connected to the power plug, and the other end of the power cord passes through the rubber plug set at the lower end of the heating chamber and the temperature controller Electrically connected, one end of an inverted U-shaped nutrient solution conduit is set in the preheating chamber, and the other end of the inverted U-shaped nutrient solution conduit passes through the rubber plug provided at the upper end of the heating chamber, passes through the heating chamber and from the heating chamber The rubber stopper provided at the lower end passes through the nutrient solution bottle,
通过温度传感器可设定升温加热腔内的温度，并通过设定升温加热腔内的温度调整经营养液导管流出的营养液的温度，The temperature in the heating chamber can be set through the temperature sensor, and the temperature of the nutrient solution flowing out through the nutrient solution conduit can be adjusted by setting the temperature in the heating chamber.
营养液瓶盖由圆形的营养液瓶外盖、圆形的营养液瓶内盖和橡胶塞连接管依次同轴的串连连接在一起，小橡胶塞塞在橡胶塞连接管的下端，在营养液瓶内盖的底面上中心对称的开有四个卡钩孔，The nutrient solution bottle cap consists of a round nutrient solution bottle outer cover, a round nutrient solution bottle inner cover and a rubber stopper connecting pipe connected in series in sequence. The small rubber stopper is plugged at the lower end of the rubber stopper connecting pipe. Four hook holes are symmetrically opened on the bottom surface of the inner cover of the nutrient solution bottle.
圆桶形的活塞杆的下端与环形橡胶活塞同轴的连接在一起，圆桶形的活塞杆的下端底面中心位置开有通气孔，圆桶形的活塞杆的上端沿圆周对称的伸出四个卡钩，营养液瓶盖下端的橡胶塞连接管从圆桶形的活塞杆的上端插入圆桶形的活塞杆内，圆桶形的活塞杆上端的四个卡钩穿过营养液瓶内盖底面上所开的四个卡钩孔卡在营养液瓶内盖上，并通过四个卡钩使圆桶形的活塞杆与营养液瓶盖连接在一起，圆桶形的活塞杆连同环形橡胶活塞插入营养液瓶口中，营养液瓶盖盖在营养液瓶口上，并使营养液瓶外盖与设置在营养液瓶口外的圆柱形弹簧弹性相连接，The lower end of the barrel-shaped piston rod is coaxially connected with the ring-shaped rubber piston. There is a vent hole in the center of the bottom surface of the lower end of the barrel-shaped piston rod. The upper end of the barrel-shaped piston rod protrudes symmetrically for four The rubber stopper connecting tube at the lower end of the nutrient solution bottle cap is inserted into the barrel-shaped piston rod from the upper end of the barrel-shaped piston rod, and the four hooks at the upper end of the barrel-shaped piston rod pass through the nutrient solution bottle. The four hook holes opened on the bottom surface of the cover are stuck on the inner cover of the nutrient solution bottle, and the barrel-shaped piston rod is connected with the nutrient solution bottle cover through the four hooks. The barrel-shaped piston rod is connected with the ring The rubber piston is inserted into the mouth of the nutrient solution bottle, the cap of the nutrient solution bottle is covered on the mouth of the nutrient solution bottle, and the outer cover of the nutrient solution bottle is elastically connected with the cylindrical spring arranged outside the mouth of the nutrient solution bottle,
在使用肠内营养液滴注辅助装置时，首先将营养液瓶盖连同圆桶形的活塞杆从营养液瓶口拔出，将营养液从营养液瓶口倒入营养液腔内，然后将圆桶形的活塞杆插入营养液瓶口内，并将营养液瓶盖盖在营养液瓶口上，经过一段时间，营养液从营养液腔经营养液流通口流入预热腔内，When using the enteral nutrient solution instillation auxiliary device, first pull out the nutrient solution bottle cap together with the barrel-shaped piston rod from the nutrient solution bottle mouth, pour the nutrient solution into the nutrient solution cavity from the nutrient solution bottle mouth, and then put the The barrel-shaped piston rod is inserted into the mouth of the nutrient solution bottle, and the cap of the nutrient solution bottle is covered on the mouth of the nutrient solution bottle. After a period of time, the nutrient solution flows from the nutrient solution chamber through the nutrient solution flow port into the preheating chamber.
将电能由电源插头经温度控制器接入到加热器，加热器首先通过导热的瓶体内壁对预热腔内的营养液进行预升温，当营养液预升温完成后，平稳的下压营养液瓶盖，使橡胶塞连接管下端的小橡胶塞堵塞圆桶形的活塞杆下端底面中心位置开的通气孔，使的营养液腔内的营养液的上表面和环形橡胶活塞之间形成一个密闭空腔，并随着营养液瓶盖继续向下移动带动环形橡胶活塞压缩密闭空腔中的空气使营养液的上表面压强增加，使得营养液从预热腔经营养液导管穿过升温加热腔升温后流出营养液瓶，当营养液从预热腔经营养液导管连续的从营养液瓶流出时，去掉施加在营养液瓶盖上的压力，在圆柱形弹簧的弹力驱动下营养液瓶盖向上移动，带动橡胶塞连接管下端的小橡胶塞向上移动并打开圆桶形的活塞杆下面的通气孔，使营养液瓶外面的空气经通气孔流入营养液腔内，通气孔打开后，利用虹吸原理营养液会从预热腔经营养液导管连续不断的从营养液瓶流出，实现对患者的肠内营养液滴注。The electric energy is connected to the heater from the power plug through the temperature controller. The heater first preheats the nutrient solution in the preheating chamber through the inner wall of the heat-conducting bottle. When the nutrient solution is preheated, press down the nutrient solution steadily. Bottle cap, make the small rubber plug at the lower end of the rubber stopper connecting tube block the vent hole in the center of the bottom surface of the barrel-shaped piston rod, so that a closed airtight space is formed between the upper surface of the nutrient solution in the nutrient solution chamber and the annular rubber piston. Cavity, and as the nutrient solution bottle cap continues to move down, it drives the annular rubber piston to compress the air in the airtight cavity to increase the pressure on the upper surface of the nutrient solution, so that the nutrient solution passes through the heating chamber from the preheating chamber through the nutrient solution conduit After heating up, it flows out of the nutrient solution bottle. When the nutrient solution flows out of the nutrient solution bottle continuously from the preheating chamber through the nutrient solution conduit, the pressure on the nutrient solution bottle cap is removed, and the nutrient solution bottle cap is driven by the elastic force of the cylindrical spring. Move up, drive the small rubber plug at the lower end of the rubber plug connecting pipe to move up and open the vent hole under the barrel-shaped piston rod, so that the air outside the nutrient solution bottle flows into the nutrient solution cavity through the vent hole. After the vent hole is opened, use Siphon principle Nutrient solution will continuously flow out of the nutrient solution bottle from the preheating chamber through the nutrient solution catheter to realize the instillation of enteral nutrient solution to the patient.
附图说明Description of drawings
下面结合附图对本发明进一步说明。The present invention will be further described below in conjunction with the accompanying drawings.
图1本发明的整体结构图。Fig. 1 is the overall structural diagram of the present invention.
图2本发明的整体结构图的A-A剖视图。A-A cross-sectional view of the overall structure diagram of Fig. 2 of the present invention.
图3本发明的整体结构图的B-B剖视图。Fig. 3 is the B-B sectional view of the overall structure diagram of the present invention.
图4本发明的整体结构图的C-C剖视图。Fig. 4 is the C-C sectional view of the overall structure diagram of the present invention.
具体实施方式Detailed ways
在图1中，一种肠内营养液滴注辅助装置，由营养液瓶1、营养液瓶口2、橡胶塞3、营养液瓶盖4、营养液导管19、电源线25、电源插头26构成，In Fig. 1, a kind of enteral nutrient solution instillation auxiliary device is made up of nutrient solution bottle 1, nutrient solution bottle mouth 2, rubber stopper 3, nutrient solution bottle cap 4, nutrient solution conduit 19, power cord 25, power plug 26 constitute,
在图2和图4中，营养液瓶1由瓶体外壁1-1、预热腔隔离壁1-2、瓶体内壁1-3、瓶口外壁2-1、瓶口内壁2-2构成，在瓶口外壁2-1和瓶口内壁2-2之间设置有弹簧10，瓶体外壁1-1、预热腔隔离壁1-2和瓶体内壁1-3将营养液瓶1的内腔分成营养液腔15、预热腔16和升温加热腔17，在预热腔隔离壁1-2的下部开有营养液流通口20，In Fig. 2 and Fig. 4, the nutrient solution bottle 1 is composed of the outer wall of the bottle 1-1, the partition wall of the preheating chamber 1-2, the inner wall of the bottle 1-3, the outer wall of the bottle mouth 2-1, and the inner wall of the bottle mouth 2-2. A spring 10 is arranged between the outer wall 2-1 of the bottle mouth and the inner wall 2-2 of the bottle mouth, the outer wall 1-1 of the bottle, the partition wall 1-2 of the preheating chamber and the inner wall 1-3 of the bottle The inner cavity is divided into a nutrient solution cavity 15, a preheating cavity 16 and a heating cavity 17, and a nutrient solution flow port 20 is opened at the lower part of the partition wall 1-2 of the preheating cavity.
在图2和图4中，在升温加热腔17内设置有橡胶塞24、橡胶塞3、加热器18、温度传感器23、温度控制器21，温度控制器21通过电源线25与电源插头26电连接，温度控制器21还通过加热导线22与加热器18电连接，设置在升温加热腔17内的温度传感器23与温度控制器21电连接，可通过温度传感器23设定升温加热腔17内的温度，并通过设定升温加热腔17内的温度调整经营养液导管19流出的营养液的温度，In Fig. 2 and Fig. 4, be provided with rubber stopper 24, rubber stopper 3, heater 18, temperature sensor 23, temperature controller 21 in heating chamber 17, temperature controller 21 is electrically connected to power plug 26 by power cord 25 Connected, the temperature controller 21 is also electrically connected with the heater 18 through the heating wire 22, and the temperature sensor 23 arranged in the heating chamber 17 is electrically connected with the temperature controller 21, and the temperature in the heating chamber 17 can be set by the temperature sensor 23. temperature, and adjust the temperature of the nutrient solution flowing out through the nutrient solution conduit 19 by setting the temperature in the heating chamber 17,
在图2中，营养液导管19的一部分设置在预热腔16内，营养液导管19的另一部分穿过橡胶塞24、升温加热腔17和橡胶塞3从营养液瓶1的下端伸出，In Fig. 2, a part of the nutrient solution conduit 19 is arranged in the preheating cavity 16, and another part of the nutrient solution conduit 19 passes through the rubber stopper 24, the heating chamber 17 and the rubber stopper 3 to stretch out from the lower end of the nutrient solution bottle 1,
在图2中，营养液瓶盖4由营养液瓶外盖4-1、营养液瓶内盖4-2和橡胶塞连接管4-3构成，橡胶塞连接管4-3的下端与小橡胶塞13相连，In Fig. 2, the nutrient solution bottle cap 4 is made of the nutrient solution bottle outer cover 4-1, the nutrient solution bottle inner cover 4-2 and the rubber stopper connecting pipe 4-3, and the lower end of the rubber stopper connecting pipe 4-3 is connected with the small rubber stopper. Plug 13 connected,
在图2和图3中，圆桶形的活塞杆8的下端与环形橡胶活塞11同轴的连接在一起，圆桶形的活塞杆8的上端沿圆周对称的伸出卡钩14-1、卡钩14-2、卡钩14-3和卡钩14-4，卡钩14-1、卡钩14-2、卡钩14-3和卡钩14-4穿过营养液瓶内盖4-2底面上所开的四个长方形卡钩孔卡在营养液瓶内盖上，圆桶形的活塞杆8的下面开有通气孔12，In Fig. 2 and Fig. 3, the lower end of the cylinder-shaped piston rod 8 is coaxially connected with the annular rubber piston 11, and the upper end of the cylinder-shaped piston rod 8 protrudes out of the hook 14-1, Grab hook 14-2, grab 14-3 and grab 14-4, grab 14-1, grab 14-2, grab 14-3 and grab 14-4 pass nutrient solution bottle inner cover 4- 2. The four rectangular hook holes opened on the bottom surface are stuck on the inner cover of the nutrient solution bottle, and there is a vent hole 12 under the barrel-shaped piston rod 8,
在使用肠内营养液滴注辅助装置时，首先通过营养液瓶盖4和圆桶形的活塞杆8上端设置的卡钩14-1、卡钩14-2、卡钩14-3和卡钩14-4，将圆桶形的活塞杆8和环形橡胶活塞11从营养液瓶口2拔出，将营养液从营养液瓶口2倒入营养液腔15内，然后将圆桶形的活塞杆8和环形橡胶活塞11插入营养液瓶口2内，并将营养液瓶盖4盖在营养液瓶口2上，经过一段时间，营养液从营养液腔15经营养液流通口20流入预热腔16内，When using the enteral nutrient solution instillation auxiliary device, at first the hook 14-1, the hook 14-2, the hook 14-3 and the hook provided on the upper end of the nutrient solution bottle cap 4 and the barrel-shaped piston rod 8 14-4, pull out the barrel-shaped piston rod 8 and the annular rubber piston 11 from the nutrient solution bottle mouth 2, pour the nutrient solution from the nutrient solution bottle mouth 2 into the nutrient solution cavity 15, and then put the barrel-shaped piston Rod 8 and annular rubber piston 11 are inserted in the nutrient solution bottle mouth 2, and the nutrient solution bottle cap 4 is covered on the nutrient solution bottle mouth 2, and after a period of time, the nutrient solution flows from the nutrient solution chamber 15 through the nutrient solution flow port 20 into the pre- Inside the thermal chamber 16,
将电能由电源插头26经温度控制器21接入加热器18，加热器18首先通过导热的瓶体内壁1-3对预热腔16内的营养液进行预升温，当营养液预升温完成后，平稳的下压营养液瓶盖4，使橡胶塞连接管4-3下端的小橡胶塞13堵塞圆桶形的活塞杆8下面的通气孔12，使的营养液腔15内的营养液的上表面和环形橡胶活塞11之间形成一个密闭空腔，并随着营养液瓶盖4继续向下移动带动环形橡胶活塞11压缩密闭空腔中的空气使营养液的上表面压强增加，使得营养液从预热腔16经营养液导管19穿过升温加热腔17升温后流出营养液瓶1，当营养液从预热腔16经营养液导管19连续从营养液瓶1流出时，去掉施加在营养液瓶盖4上的压力，在弹簧10的弹力驱动下营养液瓶盖4向上移动，带动橡胶塞连接管4-3下端的小橡胶塞13向上移动并打开圆桶形的活塞杆8下面的通气孔12，使营养液瓶1外面的空气经通气孔12流入营养液腔15内，通气孔12打开后，利用虹吸原理营养液会从预热腔16经营养液导管19连续不断的从营养液瓶1流出，实现对患者的肠内营养液滴注。The electric energy is connected to the heater 18 by the power plug 26 through the temperature controller 21, and the heater 18 first pre-heats the nutrient solution in the preheating chamber 16 through the heat-conducting inner wall 1-3 of the bottle. , press down the nutrient solution bottle cap 4 steadily, so that the small rubber plug 13 at the lower end of the rubber stopper connecting pipe 4-3 blocks the air hole 12 below the barrel-shaped piston rod 8, so that the nutrient solution in the nutrient solution chamber 15 An airtight cavity is formed between the upper surface and the annular rubber piston 11, and as the nutrient solution bottle cap 4 continues to move downward, the annular rubber piston 11 is driven to compress the air in the airtight cavity to increase the pressure on the upper surface of the nutrient solution, making the nutrition The liquid flows out of the nutrient solution bottle 1 from the preheating chamber 16 through the nutrient solution conduit 19 through the heating chamber 17 and then flows out of the nutrient solution bottle 1. The pressure on the nutrient solution bottle cap 4, driven by the elastic force of the spring 10, the nutrient solution bottle cap 4 moves upward, driving the small rubber plug 13 at the lower end of the rubber plug connecting pipe 4-3 to move upward and open the barrel-shaped piston rod 8 below vent hole 12, the air outside the nutrient solution bottle 1 flows into the nutrient solution chamber 15 through the vent hole 12, and after the vent hole 12 is opened, the nutrient solution will flow continuously from the preheating chamber 16 through the nutrient solution conduit 19 by utilizing the siphon principle. The nutrient solution bottle 1 flows out to realize instillation of enteral nutrient solution to the patient.
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