WO2023138704A1 - Automatic liquid-stop and blood-return-prevention infusion set - Google Patents
Automatic liquid-stop and blood-return-prevention infusion set Download PDFInfo
- Publication number
- WO2023138704A1 WO2023138704A1 PCT/CN2023/081329 CN2023081329W WO2023138704A1 WO 2023138704 A1 WO2023138704 A1 WO 2023138704A1 CN 2023081329 W CN2023081329 W CN 2023081329W WO 2023138704 A1 WO2023138704 A1 WO 2023138704A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- liquid
- cavity
- infusion
- pool
- liquid seal
- 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
Links
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
-
- 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
- A61M5/36—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 with means for eliminating or preventing injection or infusion of air into body
Definitions
- the invention relates to the technical field of transfusion by effectively utilizing the principles of water seal and static pressure, in particular to an infusion set for automatically stopping liquid and preventing blood return.
- Water seal that is, water seal, is generally used for sealing low-pressure gas. Specifically, it refers to a liquid column with a certain height in the device to prevent gas from entering the discharge pipe. It is usually realized by a water trap (as shown in Figure 1).
- Intravenous infusion is the physical principle of using the height of the medicinal liquid (liquid) to form static pressure and atmospheric pressure, and inject the medicinal liquid into the human body.
- the medicinal liquid in the infusion bottle is affected by the atmospheric pressure and gravity, so that the medicinal liquid flows into the infusion hose to form a water column.
- the water column pressure atmospheric pressure + static pressure of the medicinal liquid
- the medicinal liquid in the bottle can smoothly flow into the human vein.
- the venous pressure is greater than the atmospheric pressure.
- the infusion bottle should be hung about 50-60 cm above the puncture site to form a certain water column pressure, so that the water column pressure is greater than the venous pressure, so that the infused medicine can flow smoothly into the human vein.
- the object of the present invention is to provide an infusion set for automatically stopping liquid and preventing blood return.
- the present invention provides an infusion device for automatically stopping liquid and preventing blood return, which includes a liquid-sealed pool device, a bottle stopper piercer, a drip funnel, a screw connector, an intravenous infusion needle, a flow regulator, an infusion hose and a vent valve; the cork piercer, liquid-sealed pool device, drip funnel, screw connector, and intravenous infusion needle are sequentially communicated through the infusion hose; the infusion hose passes through the flow regulator, and the vent valve is connected to the cork piercer; , liquid seal tank cavity and output nozzle.
- the liquid medicine in the infusion bottle enters the cavity of the liquid seal pool through the input nozzle of the liquid seal pool device, and the static pressure formed by the liquid medicine in the infusion bottle is stronger than the static pressure formed by the liquid medicine in the cavity of the liquid seal pool due to the existence of atmospheric pressure, the height of the infusion bottle, and the vent valve.
- the medicinal liquid in the cavity of the liquid-sealed pool normally flows into the output nozzle of the liquid-sealed pool device and smoothly enters the drip funnel and the infusion hose.
- the static pressure formed by the medicinal liquid in the infusion bottle is stronger than the venous pressure of the human body in the wall of the infusion hose.
- the liquid medicine liquid can be automatically stored and the static pressure and sealing effect formed by the liquid medicine liquid in the liquid seal pool cavity can be effectively utilized, and the liquid medicine liquid automatically stored in the liquid seal pool cavity can be effectively used
- the cavity of the liquid-sealed pool makes the static pressure formed by the medicinal liquid in the cavity of the liquid-sealed pool completely equal to the venous pressure of the human body in the wall of the infusion hose, which can prevent the air from entering the vein of the human body after the medicinal liquid in the infusion bottle is transfused.
- the liquid seal pool device includes a liquid seal body, a liquid seal pool cavity, an input internal pipeline, and an output internal pipeline; the liquid seal pool cavity is disposed inside the liquid seal body, the input internal pipeline is connected to the input nozzle in the liquid seal pool cavity, and the output internal pipeline is connected to the output nozzle in the liquid seal pool cavity.
- the input inner pipeline and the output inner pipeline are symmetrically arranged around the cavity of the liquid seal pool.
- the cavity of the liquid-sealed pool is circular; the output nozzle is a convex nozzle.
- the cavity of the liquid-sealed pool includes a first cavity, a second cavity, a cavity partition and a through pipe in the cavity; the first cavity and the second cavity are separated by the cavity partition, and the cavity internal through pipe is fixed on the cavity partition for communicating the first cavity and the second cavity.
- the part of the through-tube in the cavity located in the first cavity is the first through-tube
- the part of the through-tube in the cavity located in the second cavity is the second through-tube
- the height of the input internal pipeline is 60%-90% of the height of the first cavity
- the height of the output internal pipeline is 80%-90% of the height of the second cavity
- the height of the first internal passage is 80%-90% of the height of the first cavity
- the height of the second internal passage is 60%-90% of the height of the second cavity.
- the cavity of the liquid-sealed pool is cylindrical.
- the liquid-sealed body is a liquid-sealed body of transparent soft material.
- the transparent soft material is made of TPE, or the transparent soft material is medical grade PVC, MT or MD containing plasticizer DEHP.
- the infusion set for automatic liquid stop and blood return prevention of the present invention can automatically store liquid medicine in the liquid seal pool cavity of the liquid seal pool device without manual interference, and effectively utilize the static pressure and sealing effect formed by the liquid medicine liquid in the liquid seal pool cavity (20), thereby preventing air from entering the human vein after the liquid medicine liquid is transfused, greatly reducing nursing work and reducing doctor-patient disputes;
- the personnel can directly replace the next infusion bottle to continue the normal infusion, without the need for the nursing staff to manually discharge the excess air remaining in the infusion hose again and repeatedly confirm that there is no air in the infusion hose; after the liquid is automatically stopped, by gently squeezing the liquid seal tank device, the remaining liquid medicine in the cavity of the liquid seal pool can be completely infused, which avoids the waste of medicine liquid, effectively guarantees the treatment effect, greatly improves the quality of care, enhances the patient's trust in the nurses, and effectively promotes the harmonious development of the nurse-patient
- Fig. 1 is the structural representation of prior art trap
- Fig. 2 is the first schematic diagram of the embodiment of the infusion set for automatically stopping liquid and preventing blood return of the present invention
- Fig. 3 is the second schematic diagram of the embodiment of the infusion set for automatically stopping liquid and preventing blood return of the present invention
- Fig. 4 is the third schematic diagram of the embodiment of the infusion set for automatically stopping liquid and preventing blood return of the present invention
- Fig. 5 is a side view of the first structure of the liquid-sealed pool device of the embodiment of the infusion set for automatic liquid stop and anti-blood return of the present invention
- Fig. 6 is the sectional view of A-A direction in Fig. 5;
- Fig. 7 is a perspective view of the first structure of the liquid-sealed pool device of the embodiment of the infusion set for automatic liquid stop and anti-blood return of the present invention
- Fig. 8 is an internal schematic diagram of the first structure of the liquid-sealed pool device of the embodiment of the infusion set for automatic liquid stop and anti-blood return of the present invention
- Fig. 9 is an internal schematic diagram of the second structure of the liquid-sealed pool device of the embodiment of the infusion set for automatic liquid stop and anti-blood return of the present invention.
- Fig. 10 is a front view of the second structure of the liquid-sealed pool device embodiment of the infusion set for automatic liquid stop and anti-blood return of the present invention
- Fig. 11 is a sectional view of A-A direction in Fig. 10;
- Fig. 12 is the second structure of the liquid-sealed pool device of the embodiment of the infusion set for automatic liquid stop and anti-blood return of the present invention stereogram.
- connection and “connected” should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a communication connection, a direct connection, an indirect connection through an intermediary, or an internal connection between two elements or an interaction relationship between two elements.
- the present invention provides an embodiment of an infusion set that automatically stops liquid and prevents blood return, including a liquid-sealed pool device 1, a bottle stopper puncturer, a drip funnel 3, a screw connector 4, an intravenous infusion needle 5, a flow regulator 6, an infusion hose 7, and a vent valve 8; Regulate the dripping speed of the medicinal solution in the infusion hose 7.
- the ventilation valve 8 is connected with the cork piercer, and then the air enters the infusion bottle 9 after being filtered by the ventilation valve 8; More specifically, the dropping funnel 3 includes a dosing tee 31 .
- the cork piercer, dropping funnel 3, screw connector 4, intravenous infusion needle 5, flow regulator 6, infusion hose 7 and ventilation valve 8 can be existing or specially designed according to the patent of the present invention, and no specific limitation is made here.
- the automatic hemostasis function of the infusion set for automatic hemostasis and blood return prevention of the present invention is realized by the static pressure formed by the atmospheric pressure and the height difference of the liquid seal pool device and the sealing principle of the medicinal liquid in the cavity of the liquid seal pool.
- the atmospheric pressure, the static pressure generated by the medicinal liquid in the infusion bottle, and the static pressure formed by the medicinal liquid in the liquid seal pool device 1 are greater than the venous pressure of the human body in the wall of the infusion hose 7, and the infusion device that automatically stops liquid and prevents blood return starts to automatically infuse; more specifically, when there is medicinal liquid in the infusion bottle 9 and the medicine in the infusion bottle 9
- the static pressure formed by the liquid liquid is greater than zero
- the liquid medicine in the infusion bottle 9 enters the cavity 20 of the liquid seal pool through the input nozzle 201 of the liquid seal pool device 1, and the liquid medicine in the infusion bottle 9 will The static pressure formed by the liquid is stronger than the static pressure formed by the medicinal liquid in the cavity 20 of the liquid-sealed pool, and its pressure makes the medicinal liquid in the cavity 20 of the liquid-sealed pool normally flow into the
- the static pressure formed by the medicinal liquid in the infusion bottle 9 is stronger than the venous pressure of the human body in the wall of the infusion hose 7.
- the blood infusion set starts to infuse automatically. That is, the atmospheric pressure, the static pressure generated by the medicinal liquid in the infusion bottle, and the static pressure generated by the medicinal liquid in the cavity 20 of the liquid seal pool are greater than the venous pressure of the human body in the wall of the infusion hose 7; wherein, the pressure refers to the sum of the atmospheric pressure and the static pressure formed by the medicinal liquid in the infusion bottle 9.
- the atmospheric pressure and the static pressure generated by the medicinal liquid in the cavity 20 of the liquid seal pool 20 are equal to the venous pressure of the human body in the wall of the infusion hose 7, that is, the medicinal liquid is kept in a constant pressure state in the cavity of the liquid seal pool of the liquid seal pool device 1 to prevent air from entering the human vein after the liquid medicinal liquid in the infusion bottle 9 is transfused.
- anti-bleeding infusion set realizes automatic liquid stop and anti-bleeding. This function is not affected by the composition and purity of the liquid medicine, and can ensure the effect of automatic liquid stop.
- the atmospheric pressure and the medicinal liquid in the cavity 20 of the liquid seal pool will no longer enter the output nozzle 202 of the liquid seal pool device 1, because the height of the liquid seal pool device 1 and the liquid seal pool cavity 20 of the liquid seal pool device 1 can automatically store the medicinal liquid and effectively utilize the liquid formed in the liquid seal pool cavity 20 Static pressure and sealing function, the liquid medicine liquid automatically stored in the liquid seal pool cavity 20 effectively utilizes the liquid seal pool cavity 20, so that the static pressure formed by the liquid medicine liquid in the liquid seal pool cavity 20 is completely equal to the venous pressure of the human body in the wall of the infusion hose 7, which can prevent air from entering the human vein after the medicine liquid in the infusion bottle is transfused.
- the medicinal liquid retained in the liquid seal pool device 1 is the liquid seal principle (that is, the water seal principle), that is, it can prevent air from entering the human vein through the liquid seal pool device 1, and can also prevent the blood of the human vein from flowing back to the infusion tube, ensuring the personal safety of the patient.
- the liquid seal principle that is, the water seal principle
- the infusion device for automatic liquid stop and blood return prevention of the present invention effectively utilizes the height of the liquid seal pool device to form the liquid medicine liquid in the cavity of the liquid seal pool to form static pressure or buoyancy to create a constant pressure sealing state.
- the medicine liquid also called medicine liquid
- the atmospheric pressure and the liquid level depth in the liquid seal pool cavity reach a pressure balance through a certain liquid level depth to form the static pressure of the liquid in the liquid seal pool cavity; the liquid seal pool cavity of the liquid seal pool device can automatically store the liquid medicine liquid.
- the height of the liquid seal pool device effectively utilizes the static pressure and sealing effect of the liquid medicine liquid in the liquid seal pool cavity to prevent air from entering the human vein after the medicine liquid in the infusion bottle is infused, that is, the liquid static pressure in the infusion bottle is zero.
- the liquid-sealed pool device of the infusion device for automatically stopping liquid and preventing blood return of the present invention effectively utilizes the effect of the liquid-sealed principle (that is, the water-sealed principle).
- the liquid-sealed principle that is, the water-sealed principle.
- the liquid completely flows into the liquid seal pool device and passes through a certain liquid level depth, so that the atmospheric pressure and the liquid level depth in the liquid seal pool device reach a pressure balance and form the static pressure of the liquid seal liquid liquid; at the same time, the height of the liquid seal pool device and the static pressure of the liquid medicine liquid in the cavity of the liquid seal pool (the seal of the liquid medicine liquid formed by gravity pressure) and the venous pressure of the human body in the tube wall of the infusion tube reach a balance state, so the infusion set naturally achieves the function of automatically stopping liquid and preventing blood return.
- the present invention utilizes a positive liquid seal (also known as a positive liquid seal tank), which is such a device or container, the inside of the container
- a positive liquid seal also known as a positive liquid seal tank
- the liquid inlet nozzle extends into the bottom of the liquid storage, and the output nozzle is reserved above the liquid level.
- the air enters the liquid inlet pipe and uses the pressure difference to press into the liquid storage of the liquid seal pool device, and at the same time enters the output nozzle to discharge.
- the static pressure of the liquid in the infusion bottle is zero, the inlet pressure is equal to or slightly lower than the outlet pressure, and the depth of the hydrostatic seal inside the positive liquid seal remains unchanged, so as to realize the balance of the inlet and outlet pressures.
- the liquid seal cell device 1 includes a liquid seal body 10, a liquid seal cell cavity 20, an input inner pipeline 30, and an output inner pipeline 40;
- the input inner pipeline 30 and the output inner pipeline 40 are symmetrically arranged around the cavity 20 of the liquid seal pool; preferably, the cavity 20 of the liquid seal pool is circular, and the output nozzle 202 is a convex nozzle, which facilitates the medicinal liquid to enter the output inner pipeline 40 through the output nozzle 202 .
- the cavity 20 of the liquid-sealed pool includes a first cavity 21 , a second cavity 22 , a cavity partition 23 and a through-pipe 24 in the cavity; wherein, the first cavity 21 and the second cavity 22 are separated by the cavity partition 23 , and the through-pipe 24 in the cavity is fixed on the cavity partition 23 for communicating the first cavity 21 and the second cavity 22 .
- the part of the inner tube 24 located in the first cavity 21 is the first inner tube 241
- the part of the cavity inner tube 24 located in the second cavity 22 is the second inner tube 242 .
- the cavity 20 of the liquid-sealed pool is cylindrical, and of course, it may also be in other shapes, which are not specifically limited here.
- the height of the input internal pipeline 30 is 60%-90% of the height of the first cavity 21
- the height of the output internal pipeline 40 is 80%-90% of the height of the second cavity 22
- the height of the first internal communication pipe 241 is the height of the first cavity 21.
- the height of the second inner tube 242 is 60%-90% of the height of the second cavity 22.
- the liquid-sealed body 10 is a liquid-sealed body of a transparent soft material, specifically, the transparent soft material is made of TPE, or the transparent soft material is medical-grade PVC, MT or MD containing plasticizer DEHP. Since the liquid seal body 10 is a liquid seal body made of a transparent soft material, after the liquid is automatically stopped, by gently squeezing the liquid seal pool device, the remaining medicinal liquid in the cavity of the liquid sealed pool can be completely infused, which avoids the waste of medicinal liquid, effectively guarantees the therapeutic effect, greatly improves the quality of care, enhances the patient's trust in the nursing staff, and effectively promotes the harmonious development of the nurse-patient relationship.
- the infusion device for automatic liquid stop and anti-blood return of the present invention can still retain part of the liquid in the liquid-sealed cavity without manual interference, thereby preventing air from entering the human vein after the liquid is infused, greatly reducing nursing work and reducing disputes between doctors and patients; at the end of each infusion, the nurse can directly replace the next infusion bottle to continue the normal infusion, and there is no need for the nurse to manually discharge the excess air in the infusion hose for a second time and repeatedly confirm that there is no air in the infusion hose; , the remaining medicinal liquid in the liquid-sealed cavity can be completely infused, avoiding the waste of medicinal liquid, effectively ensuring the therapeutic effect, greatly improving the quality of care, enhancing the trust of patients in nursing staff, and effectively promoting the harmonious development of nurse-patient relationship.
Landscapes
- 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
Description
本申请要求申请日为“2022.1.20”、申请号为“202210068650.4”的中国发明专利申请的优先权，其部分或全部内容被引用到本申请中。This application claims the priority of the Chinese invention patent application with the filing date of "2022.1.20" and the application number of "202210068650.4", part or all of which is cited in this application.
本发明涉及有效利用水封及静压原理的输液技术领域，尤其涉及一种自动止液及防回血的输液器。The invention relates to the technical field of transfusion by effectively utilizing the principles of water seal and static pressure, in particular to an infusion set for automatically stopping liquid and preventing blood return.
水封(water seal)，即水密封，一般用于低压气体的密封，具体指的是在装置中有一定高度的液柱，防止排液管中气体窜入，通常用存水弯来实现(如图1所示)。Water seal, that is, water seal, is generally used for sealing low-pressure gas. Specifically, it refers to a liquid column with a certain height in the device to prevent gas from entering the discharge pipe. It is usually realized by a water trap (as shown in Figure 1).
静脉输液是利用药液(液体)的高度形成静压与大气压的物理原理，将药液输入人体内。输液瓶内的药液受大气压和重力作用，使药液流入输液软管形成水柱，当水柱压(大气压+药液的静压)大于静脉压时，瓶内的药液即可顺畅流入人体静脉。正常环境下，静脉压大于大气压，输液时输液瓶应挂在高于穿刺部位约50～60cm形成一定的水柱压，使水柱压大于静脉压，输入的药液才能顺利流向人体静脉血管内。Intravenous infusion is the physical principle of using the height of the medicinal liquid (liquid) to form static pressure and atmospheric pressure, and inject the medicinal liquid into the human body. The medicinal liquid in the infusion bottle is affected by the atmospheric pressure and gravity, so that the medicinal liquid flows into the infusion hose to form a water column. When the water column pressure (atmospheric pressure + static pressure of the medicinal liquid) is greater than the venous pressure, the medicinal liquid in the bottle can smoothly flow into the human vein. Under normal circumstances, the venous pressure is greater than the atmospheric pressure. During the infusion, the infusion bottle should be hung about 50-60 cm above the puncture site to form a certain water column pressure, so that the water column pressure is greater than the venous pressure, so that the infused medicine can flow smoothly into the human vein.
目前，(1)接通输液瓶与输液器的是通过三通瓶塞穿刺器，瓶塞穿刺器上部针刺接通输液瓶内药液液体，瓶塞穿刺器下部是接通药液向下流的输液软管，瓶塞穿刺器中间突出是空气过滤的通气阀(管)，药液流下时，输液瓶内 的气压降低，大气压把空气从通气阀压入输液瓶内，使输液瓶内药液液体形成的静压与输液瓶外大气压保持气压差恒定，从而可以使输液瓶中的药液液体匀速流出；(2)输液瓶下面的输液软管中间接有“莫非氏滴管”，用流量调节器来调节滴入莫非氏滴管(也叫滴斗)中药液液体滴入的速度，而且在莫非氏滴管下面必须留有药液，这样才可以保持输液的压力不变，也就是输液的速度不变。At present, (1) what connects the infusion bottle and the infusion device is through the three-way bottle stopper puncturer, the upper part of the bottle stopper puncturer is acupunctured to connect the liquid medicine liquid in the infusion bottle, the lower part of the bottle stopper puncturer is the infusion hose connected to the downward flow of the medicine liquid, and the middle of the bottle stopper puncturer protrudes to be an air-filtered vent valve (pipe). (2) There is a "Murphy's dropper" indirectly in the infusion hose below the infusion bottle, and a flow regulator is used to adjust the speed of dripping into the Murphy's dropper (also called a dropper). In this way, the pressure of the infusion can be kept constant, that is, the speed of the infusion remains unchanged.
目前，普通输液器在输液或换液时，如果输液软管中混入较大的气泡，就可能导致患者发生静脉空气栓塞，严重的甚至会危及生命。At present, when ordinary infusion sets are infused or changed, if large air bubbles are mixed into the infusion hose, it may cause venous air embolism in patients, which may even be life-threatening.
发明内容Contents of the invention
本发明的目的在于提供一种自动止液及防回血的输液器。本发明提供的诸多技术方案中的优选技术方案所能产生的诸多技术效果详见下文阐述。The object of the present invention is to provide an infusion set for automatically stopping liquid and preventing blood return. The many technical effects that can be produced by the preferred technical solutions among the many technical solutions provided by the present invention are described in detail below.
为实现上述目的，本发明提供一种自动止液及防回血的输液器，包括液封池装置、瓶塞穿刺器、滴斗、螺旋连接头、静脉输液针、流量调节器、输液软管和通气阀；所述瓶塞穿刺器、液封池装置、滴斗、螺旋连接头和静脉输液针依次通过所述输液软管连通；所述输液软管穿过所述流量调节器，所述通气阀和所述瓶塞穿刺器连接；所述液封池装置内包括输入管口、液封池空腔和输出管口。In order to achieve the above object, the present invention provides an infusion device for automatically stopping liquid and preventing blood return, which includes a liquid-sealed pool device, a bottle stopper piercer, a drip funnel, a screw connector, an intravenous infusion needle, a flow regulator, an infusion hose and a vent valve; the cork piercer, liquid-sealed pool device, drip funnel, screw connector, and intravenous infusion needle are sequentially communicated through the infusion hose; the infusion hose passes through the flow regulator, and the vent valve is connected to the cork piercer; , liquid seal tank cavity and output nozzle.
优选的，当输液瓶内有药液液体及所述输液瓶内药液液体形成的静压大于零时，所述输液瓶内药液液体通过所述液封池装置的输入管口进入所述液封池空腔内，因大气压强的存在及所述输液瓶的高度及所述通气阀使其输液瓶内药液液体形成的静压压强大于所述液封池空腔内药液液体形成的静压、其压强使 所述液封池空腔内的药液液体正常流入液封池装置的输出管口顺利进入所述滴斗及输液软管，同时也因输液瓶的高度及所述通气阀使其输液瓶内的药液液体形成的静压压强大于所述输液软管壁内人体的静脉压，所述自动止液及防回血的输液器开始自动输液。Preferably, when there is liquid medicine in the infusion bottle and the static pressure formed by the liquid medicine in the infusion bottle is greater than zero, the liquid medicine in the infusion bottle enters the cavity of the liquid seal pool through the input nozzle of the liquid seal pool device, and the static pressure formed by the liquid medicine in the infusion bottle is stronger than the static pressure formed by the liquid medicine in the cavity of the liquid seal pool due to the existence of atmospheric pressure, the height of the infusion bottle, and the vent valve. The medicinal liquid in the cavity of the liquid-sealed pool normally flows into the output nozzle of the liquid-sealed pool device and smoothly enters the drip funnel and the infusion hose. At the same time, due to the height of the infusion bottle and the vent valve, the static pressure formed by the medicinal liquid in the infusion bottle is stronger than the venous pressure of the human body in the wall of the infusion hose.
当所述输液瓶内的药液液体完全输完且没有所述药液液体时及所述输液瓶内药液液体形成的静压为零时，所述大气压强、所述液封池空腔内药液液体不再进入液封池装置的输出管口，因液封池装置的高度及液封池装置的液封池空腔内能够自动储存药液液体并有效利用液封池空腔内药液液体形成的静压和密封作用，液封池空腔内自动储存的药液液体有效利用液封池空腔、使液封池空腔内的药液液体形成的静压完全等于所述输液软管壁内人体的静脉压，即可阻止空气在所述输液瓶内的药液液体输完后进入人体静脉，所述自动止液及防回血的输液器实现自动止液和防回血。When the liquid medicine liquid in the infusion bottle is completely infused and there is no liquid medicine liquid in the infusion bottle and the static pressure formed by the liquid medicine liquid in the infusion bottle is zero, the atmospheric pressure and the liquid medicine liquid in the cavity of the liquid seal pool will no longer enter the output nozzle of the liquid seal pool device. Because of the height of the liquid seal pool device and the liquid seal pool cavity of the liquid seal pool device, the liquid medicine liquid can be automatically stored and the static pressure and sealing effect formed by the liquid medicine liquid in the liquid seal pool cavity can be effectively utilized, and the liquid medicine liquid automatically stored in the liquid seal pool cavity can be effectively used The cavity of the liquid-sealed pool makes the static pressure formed by the medicinal liquid in the cavity of the liquid-sealed pool completely equal to the venous pressure of the human body in the wall of the infusion hose, which can prevent the air from entering the vein of the human body after the medicinal liquid in the infusion bottle is transfused.
优选的，所述液封池装置包括液封本体、液封池空腔、输入内管路和输出内管路；所述液封池空腔设置于所述液封本体内部，所述输入内管路与所述液封池空腔内的输入管口连接，所述输出内管路与所述液封池空腔内的输出管口连接。Preferably, the liquid seal pool device includes a liquid seal body, a liquid seal pool cavity, an input internal pipeline, and an output internal pipeline; the liquid seal pool cavity is disposed inside the liquid seal body, the input internal pipeline is connected to the input nozzle in the liquid seal pool cavity, and the output internal pipeline is connected to the output nozzle in the liquid seal pool cavity.
优选的，所述输入内管路和输出内管路左右对称环绕设置于所述液封池空腔周侧。Preferably, the input inner pipeline and the output inner pipeline are symmetrically arranged around the cavity of the liquid seal pool.
优选的，所述液封池空腔为圆形；所述输出管口为凸形管口。Preferably, the cavity of the liquid-sealed pool is circular; the output nozzle is a convex nozzle.
优选的，所述液封池空腔包括第一空腔、第二空腔、空腔隔板和空腔内通管；所述第一空腔和第二空腔通过所述空腔隔板分隔开，所述空腔内通管固定在所述空腔隔板上用于连通所述第一空腔和第二空腔。 Preferably, the cavity of the liquid-sealed pool includes a first cavity, a second cavity, a cavity partition and a through pipe in the cavity; the first cavity and the second cavity are separated by the cavity partition, and the cavity internal through pipe is fixed on the cavity partition for communicating the first cavity and the second cavity.
优选的，所述空腔内通管位于所述第一空腔内的部分为第一内通管，所述空腔内通管位于第二空腔内的部分为第二内通管。Preferably, the part of the through-tube in the cavity located in the first cavity is the first through-tube, and the part of the through-tube in the cavity located in the second cavity is the second through-tube.
优选的，所述输入内管路的高度为所述第一空腔的高度的60％-90％，所述输出内管路的高度为所述第二空腔的高度的80％-90％，所述第一内通管的高度为所述第一空腔的高度的80％-90％，所述第二内通管的高度为所述第二空腔的高度的60％-90％。Preferably, the height of the input internal pipeline is 60%-90% of the height of the first cavity, the height of the output internal pipeline is 80%-90% of the height of the second cavity, the height of the first internal passage is 80%-90% of the height of the first cavity, and the height of the second internal passage is 60%-90% of the height of the second cavity.
优选的，所述液封池空腔为圆柱形。Preferably, the cavity of the liquid-sealed pool is cylindrical.
优选的，所述液封本体为透明软体材料的液封本体。Preferably, the liquid-sealed body is a liquid-sealed body of transparent soft material.
优选的，所述透明软体材料为TPE材质，或者，所述透明软体材料为含增塑剂DEHP的医用级PVC、MT或MD。Preferably, the transparent soft material is made of TPE, or the transparent soft material is medical grade PVC, MT or MD containing plasticizer DEHP.
实施本发明上述技术方案中的一个技术方案，具有如下优点或有益效果：本发明自动止液及防回血的输液器，在无人工干扰的情况下，液封池装置的液封池空腔内能够有自动储存药液液体的功能并有效利用液封池空腔(20)内的药液液体形成的静压和密封作用，从而阻止空气在药液液体输完后进入人体静脉，极大地减少了护理工作，减少了医患纠纷；在每次输液结束时，护理人员可以直接替换下一个输液瓶就可实现继续正常输液，无需护理人员再次手动将输液软管内存留的多余空气二次排出和重复确认输液软管内完全没有空气；在自动止液后通过轻轻挤压液封池装置，即可将液封池空腔内剩余药液液体输完，避免了药液浪费，有效保障治疗效果，大大提高护理质量，增强病患对护理人员的信任，有效促进护患关系和谐发展。 Implementing one of the above-mentioned technical solutions of the present invention has the following advantages or beneficial effects: the infusion set for automatic liquid stop and blood return prevention of the present invention can automatically store liquid medicine in the liquid seal pool cavity of the liquid seal pool device without manual interference, and effectively utilize the static pressure and sealing effect formed by the liquid medicine liquid in the liquid seal pool cavity (20), thereby preventing air from entering the human vein after the liquid medicine liquid is transfused, greatly reducing nursing work and reducing doctor-patient disputes; The personnel can directly replace the next infusion bottle to continue the normal infusion, without the need for the nursing staff to manually discharge the excess air remaining in the infusion hose again and repeatedly confirm that there is no air in the infusion hose; after the liquid is automatically stopped, by gently squeezing the liquid seal tank device, the remaining liquid medicine in the cavity of the liquid seal pool can be completely infused, which avoids the waste of medicine liquid, effectively guarantees the treatment effect, greatly improves the quality of care, enhances the patient's trust in the nurses, and effectively promotes the harmonious development of the nurse-patient relationship.
为了更清楚地说明本发明实施例的技术方案，下面将对实施例描述中所需要使用的附图作简单的介绍，显而易见，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图，附图中：In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative work. In the accompanying drawings:
图1是现有技术存水弯的结构示意图；Fig. 1 is the structural representation of prior art trap;
图2是本发明自动止液及防回血的输液器实施例的第一示意图；Fig. 2 is the first schematic diagram of the embodiment of the infusion set for automatically stopping liquid and preventing blood return of the present invention;
图3是本发明自动止液及防回血的输液器实施例的第二示意图；Fig. 3 is the second schematic diagram of the embodiment of the infusion set for automatically stopping liquid and preventing blood return of the present invention;
图4是本发明自动止液及防回血的输液器实施例的第三示意图；Fig. 4 is the third schematic diagram of the embodiment of the infusion set for automatically stopping liquid and preventing blood return of the present invention;
图5是本发明自动止液及防回血的输液器实施例的液封池装置第一结构的侧视图；Fig. 5 is a side view of the first structure of the liquid-sealed pool device of the embodiment of the infusion set for automatic liquid stop and anti-blood return of the present invention;
图6是图5中A-A方向的剖视图；Fig. 6 is the sectional view of A-A direction in Fig. 5;
图7是本发明自动止液及防回血的输液器实施例的液封池装置第一结构的立体图；Fig. 7 is a perspective view of the first structure of the liquid-sealed pool device of the embodiment of the infusion set for automatic liquid stop and anti-blood return of the present invention;
图8是本发明自动止液及防回血的输液器实施例的液封池装置第一结构的内部示意图；Fig. 8 is an internal schematic diagram of the first structure of the liquid-sealed pool device of the embodiment of the infusion set for automatic liquid stop and anti-blood return of the present invention;
图9是本发明自动止液及防回血的输液器实施例的液封池装置第二结构的内部示意图；Fig. 9 is an internal schematic diagram of the second structure of the liquid-sealed pool device of the embodiment of the infusion set for automatic liquid stop and anti-blood return of the present invention;
图10是本发明自动止液及防回血的输液器实施例的液封池装置第二结构的主视图；Fig. 10 is a front view of the second structure of the liquid-sealed pool device embodiment of the infusion set for automatic liquid stop and anti-blood return of the present invention;
图11是图10中A-A方向的剖视图；Fig. 11 is a sectional view of A-A direction in Fig. 10;
图12是本发明自动止液及防回血的输液器实施例的液封池装置第二结构 的立体图。Fig. 12 is the second structure of the liquid-sealed pool device of the embodiment of the infusion set for automatic liquid stop and anti-blood return of the present invention stereogram.
为了使本发明的目的、技术方案及优点更加清楚明白，下文将要描述的各种示例性实施例将要参考相应的附图，这些附图构成了示例性实施例的一部分，其中描述了实现本发明可能采用的各种示例性实施例。除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本公开相一致的所有实施方式。应明白，它们仅是与如所附权利要求书中所详述的、本发明公开的一些方面相一致的流程、方法和装置等的例子，还可使用其他的实施例，或者对本文列举的实施例进行结构和功能上的修改，而不会脱离本发明的范围和实质。In order to make the purpose, technical solutions and advantages of the present invention clearer, the various exemplary embodiments to be described below will refer to the corresponding drawings, and these drawings constitute a part of the exemplary embodiments, which describe various exemplary embodiments that may be used to realize the present invention. Unless indicated otherwise, the same numbers in different drawings identify the same or similar elements. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. It should be understood that they are merely examples of processes, methods, apparatus, etc., consistent with aspects of the present disclosure as detailed in the appended claims, and that other embodiments can be used, or structural and functional modifications can be made to the embodiments listed herein, without departing from the scope and spirit of the present invention.
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”等指示的是基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的元件必须具有的特定的方位、以特定的方位构造和操作。术语“第一”、“第二”等仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。术语“多个”的含义是两个或两个以上。术语“相连”、“连接”应做广义理解，例如，可以是固定连接、可拆卸连接、一体地连接、机械连接、电连接、通信连接、直接相连、通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。术语“和/或”包括一个或多个相关的所列项目的任意的和所有的组合。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。 In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse" and the like indicate the orientation or positional relationship based on the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying a specific orientation, construction and operation in a specific orientation that the referred elements must have. The terms "first", "second", etc. are used for descriptive purposes only, and should not be understood as indicating or implying relative importance or implicitly specifying the number of indicated technical features. The term "plurality" means two or more. The terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a communication connection, a direct connection, an indirect connection through an intermediary, or an internal connection between two elements or an interaction relationship between two elements. The term "and/or" includes any and all combinations of one or more of the associated listed items. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.
为了说明本发明所述的技术方案，下面通过具体实施例来进行说明，仅示出了与本发明实施例相关的部分。In order to illustrate the technical solutions of the present invention, specific embodiments are used for description below, and only parts related to the embodiments of the present invention are shown.
如图2-4所示，本发明提供一种自动止液及防回血的输液器实施例，包括液封池装置1、瓶塞穿刺器、滴斗3、螺旋连接头4、静脉输液针5、流量调节器6、输液软管7和通气阀8；所述瓶塞穿刺器、液封池装置1、滴斗3、螺旋连接头4和静脉输液针5依次通过所述输液软管7连通；所述输液软管7穿过所述流量调节器6，进而所述流量调节器6可以调节所述输液软管7中药液的滴速。所述通气阀8和所述瓶塞穿刺器连接，进而空气经所述通气阀8过滤后进入输液瓶9；所述液封池装置包括输入管口201、液封池空腔20和输出管口202。更为具体的，滴斗3包含有加药三通31。其中，所述瓶塞穿刺器、滴斗3、螺旋连接头4、静脉输液针5、流量调节器6、输液软管7和通气阀8可以为现有的，也可以根据本发明专利特殊设计的，在此不做具体限制。As shown in Figures 2-4, the present invention provides an embodiment of an infusion set that automatically stops liquid and prevents blood return, including a liquid-sealed pool device 1, a bottle stopper puncturer, a drip funnel 3, a screw connector 4, an intravenous infusion needle 5, a flow regulator 6, an infusion hose 7, and a vent valve 8; Regulate the dripping speed of the medicinal solution in the infusion hose 7. The ventilation valve 8 is connected with the cork piercer, and then the air enters the infusion bottle 9 after being filtered by the ventilation valve 8; More specifically, the dropping funnel 3 includes a dosing tee 31 . Wherein, the cork piercer, dropping funnel 3, screw connector 4, intravenous infusion needle 5, flow regulator 6, infusion hose 7 and ventilation valve 8 can be existing or specially designed according to the patent of the present invention, and no specific limitation is made here.
在本实施例中，本发明自动止液及防回血的输液器的自动止液功能是通过大气压和液封池装置高度差形成的静压与液封池空腔内药液液体密封原理实现的。In this embodiment, the automatic hemostasis function of the infusion set for automatic hemostasis and blood return prevention of the present invention is realized by the static pressure formed by the atmospheric pressure and the height difference of the liquid seal pool device and the sealing principle of the medicinal liquid in the cavity of the liquid seal pool.
具体的，当输液瓶9内有药液液体或所述输液瓶9内药液液体形成的静压大于零时，大气压强、输液瓶内药液液体产生的静压、所述液封池装置1(液封池空腔20)内药液液体形成的静压大于所述输液软管7壁内人体的静脉压，所述自动止液及防回血的输液器开始自动输液；更为具体的，当输液瓶9内有药液液体及所述输液瓶9内药液液体形成的静压大于零时，所述输液瓶9内药液液体通过所述液封池装置1的输入管口201进入所述液封池空腔20内，因大气压强的存在及所述输液瓶9的高度及所述通气阀8使所述输液瓶9内药液 液体形成的静压压强大于所述液封池空腔20内药液液体形成的静压、其压强使所述液封池空腔20内的药液液体正常流入所述液封池装置1的输出管口202顺利进入所述滴斗3及输液软管7，同时也因所述输液瓶9的高度及所述通气阀8使所述输液瓶9内药液液体形成的静压压强大于所述输液软管7壁内人体的静脉压，所述自动止液及防回血的输液器开始自动输液。即为大气压强、输液瓶内药液液体产生的静压、所述液封池空腔20内药液液体产生的静压大于所述输液软管7壁内人体的静脉压；其中，其压强是指大气压强、所述输液瓶9内药液液体形成的静压压强的总和。Specifically, when there is medicinal liquid in the infusion bottle 9 or the static pressure formed by the medicinal liquid in the infusion bottle 9 is greater than zero, the atmospheric pressure, the static pressure generated by the medicinal liquid in the infusion bottle, and the static pressure formed by the medicinal liquid in the liquid seal pool device 1 (liquid seal pool cavity 20) are greater than the venous pressure of the human body in the wall of the infusion hose 7, and the infusion device that automatically stops liquid and prevents blood return starts to automatically infuse; more specifically, when there is medicinal liquid in the infusion bottle 9 and the medicine in the infusion bottle 9 When the static pressure formed by the liquid liquid is greater than zero, the liquid medicine in the infusion bottle 9 enters the cavity 20 of the liquid seal pool through the input nozzle 201 of the liquid seal pool device 1, and the liquid medicine in the infusion bottle 9 will The static pressure formed by the liquid is stronger than the static pressure formed by the medicinal liquid in the cavity 20 of the liquid-sealed pool, and its pressure makes the medicinal liquid in the cavity 20 of the liquid-sealed pool normally flow into the output nozzle 202 of the liquid-sealed pool device 1 and enter the dripping funnel 3 and the infusion hose 7 smoothly. At the same time, due to the height of the infusion bottle 9 and the vent valve 8, the static pressure formed by the medicinal liquid in the infusion bottle 9 is stronger than the venous pressure of the human body in the wall of the infusion hose 7. The blood infusion set starts to infuse automatically. That is, the atmospheric pressure, the static pressure generated by the medicinal liquid in the infusion bottle, and the static pressure generated by the medicinal liquid in the cavity 20 of the liquid seal pool are greater than the venous pressure of the human body in the wall of the infusion hose 7; wherein, the pressure refers to the sum of the atmospheric pressure and the static pressure formed by the medicinal liquid in the infusion bottle 9.
具体的，当输液瓶9内药液液体输完且没有所述药液液体或所述输液瓶9内药液液体产生的静压为零时，所述大气压强、所述液封池空腔20内药液液体产生的静压与所述输液软管7壁内人体的静脉压相等，即所述药液静置在液封池装置1的液封池空腔内保持在恒压状态，阻止空气在所述输液瓶9内的药液液体输完后进入人体静脉，所述自动止液及防回血的输液器实现自动止液和防回血。该功能不受药液成分及纯净度的影响，能够确保自动止液效果。Specifically, when the medicinal liquid in the infusion bottle 9 is infused and there is no medicinal liquid or the static pressure generated by the medicinal liquid in the infusion bottle 9 is zero, the atmospheric pressure and the static pressure generated by the medicinal liquid in the cavity 20 of the liquid seal pool 20 are equal to the venous pressure of the human body in the wall of the infusion hose 7, that is, the medicinal liquid is kept in a constant pressure state in the cavity of the liquid seal pool of the liquid seal pool device 1 to prevent air from entering the human vein after the liquid medicinal liquid in the infusion bottle 9 is transfused. And anti-bleeding infusion set realizes automatic liquid stop and anti-bleeding. This function is not affected by the composition and purity of the liquid medicine, and can ensure the effect of automatic liquid stop.
更为具体的，当所述输液瓶9内的药液液体完全输完且没有所述药液液体及所述输液瓶9内药液液体形成的静压为零时，所述大气压强、所述液封池空腔20内药液液体不再进入液封池装置1的输出管口202，因所述液封池装置1的高度及液封池装置1的液封池空腔20内能够自动储存药液液体并有效利用所述液封池空腔20内药液液体形成的静压和密封作用，所述液封池空腔20内自动储存的药液液体有效利用液封池空腔20、使液封池空腔20内的药液液体形成的静压完全等于所述输液软管7壁内人体的静脉压，即可阻止空气在所述输液瓶内的药液液体输完后进入人体静脉，所述自动止液及防回血的输液器 实现自动止液和防回血。液封池装置1内保留的药液即为液封原理(即为水封原理)，即可以阻止空气通过液封池装置1进入人体静脉，也可以阻止人体静脉的血液回流至输液软管，保证病患的人身安全。More specifically, when the medicinal liquid in the infusion bottle 9 is completely infused and there is no medicinal liquid and the static pressure formed by the medicinal liquid in the infusion bottle 9 is zero, the atmospheric pressure and the medicinal liquid in the cavity 20 of the liquid seal pool will no longer enter the output nozzle 202 of the liquid seal pool device 1, because the height of the liquid seal pool device 1 and the liquid seal pool cavity 20 of the liquid seal pool device 1 can automatically store the medicinal liquid and effectively utilize the liquid formed in the liquid seal pool cavity 20 Static pressure and sealing function, the liquid medicine liquid automatically stored in the liquid seal pool cavity 20 effectively utilizes the liquid seal pool cavity 20, so that the static pressure formed by the liquid medicine liquid in the liquid seal pool cavity 20 is completely equal to the venous pressure of the human body in the wall of the infusion hose 7, which can prevent air from entering the human vein after the medicine liquid in the infusion bottle is transfused. Realize automatic hemostasis and anti-bleeding. The medicinal liquid retained in the liquid seal pool device 1 is the liquid seal principle (that is, the water seal principle), that is, it can prevent air from entering the human vein through the liquid seal pool device 1, and can also prevent the blood of the human vein from flowing back to the infusion tube, ensuring the personal safety of the patient.
本发明自动止液及防回血的输液器有效利用液封池装置的高度使液封池空腔内药液液体形成静压或浮力，制造一个恒压的密封状态，当输液瓶内药液液体(也可称为药液)完全流入液封池空腔内通过一定液位深度使大气压力与液封池空腔内液位深度达到压力平衡并形成液封池空腔内液体的静压；主要以液封池装置的液封池空腔内能够自动储存药液液体的功能并有效利用液封池装置的高度使液封池空腔内药液液体形成的静压和密封作用、阻止空气在输液瓶内的药液输完后进入人体静脉，即输液瓶内液体静压为零、大气压强、液封池空腔内液体的静压及输液软管壁内人体静脉压保持在恒压状态，即自动止液及防回血的输液器实现自动止液和防回血功能。The infusion device for automatic liquid stop and blood return prevention of the present invention effectively utilizes the height of the liquid seal pool device to form the liquid medicine liquid in the cavity of the liquid seal pool to form static pressure or buoyancy to create a constant pressure sealing state. When the medicine liquid (also called medicine liquid) in the infusion bottle completely flows into the cavity of the liquid seal pool, the atmospheric pressure and the liquid level depth in the liquid seal pool cavity reach a pressure balance through a certain liquid level depth to form the static pressure of the liquid in the liquid seal pool cavity; the liquid seal pool cavity of the liquid seal pool device can automatically store the liquid medicine liquid. The height of the liquid seal pool device effectively utilizes the static pressure and sealing effect of the liquid medicine liquid in the liquid seal pool cavity to prevent air from entering the human vein after the medicine liquid in the infusion bottle is infused, that is, the liquid static pressure in the infusion bottle is zero.
本发明自动止液及防回血的输液器的液封池装置，有效利用液封原理(即为水封原理)作用，在同一大气压环境下，在输液过程中，输液瓶内药液液体快输注完时，输液瓶内药液液体的静压减少为零，液封池装置就开始起作用，因为液封池装置的高度及液封原理是利用药液液体的静压或浮力，制造一个恒压状态，利用液封原理的恒压起作用；当药液液体完全流入液封池装置内通过一定液位深度，使大气压与液封池装置中液位深度达到压力平衡并形成液封药液液体的静压；同时液封池装置高度及液封池空腔内药液液体的静压(重力压强形成的药液液体密封)与输液软管管壁内的人体的静脉压达到平衡状态，所以输液器就自然达到自动止液及防止回血功能。The liquid-sealed pool device of the infusion device for automatically stopping liquid and preventing blood return of the present invention effectively utilizes the effect of the liquid-sealed principle (that is, the water-sealed principle). Under the same atmospheric pressure environment, during the infusion process, when the liquid medicine liquid in the infusion bottle is almost infused, the static pressure of the liquid medicine liquid in the infusion bottle decreases to zero, and the liquid-sealed pool device begins to work. The liquid completely flows into the liquid seal pool device and passes through a certain liquid level depth, so that the atmospheric pressure and the liquid level depth in the liquid seal pool device reach a pressure balance and form the static pressure of the liquid seal liquid liquid; at the same time, the height of the liquid seal pool device and the static pressure of the liquid medicine liquid in the cavity of the liquid seal pool (the seal of the liquid medicine liquid formed by gravity pressure) and the venous pressure of the human body in the tube wall of the infusion tube reach a balance state, so the infusion set naturally achieves the function of automatically stopping liquid and preventing blood return.
本发明利用正液封(又叫正液封罐)，它是这样一种设备或容器，容器内 存留一定深度的液体，进液管口伸进存液体底部，输出管口预留在液面上方，进气在进液管内利用压差压入液封池装置的存液中，同时进入输出管口排出。当输液瓶内液体静压为零时进气压力等于或稍低于出气压力，正液封内部分存液静压液封深度保持不变，从而实现平衡进出气压力。The present invention utilizes a positive liquid seal (also known as a positive liquid seal tank), which is such a device or container, the inside of the container To store a certain depth of liquid, the liquid inlet nozzle extends into the bottom of the liquid storage, and the output nozzle is reserved above the liquid level. The air enters the liquid inlet pipe and uses the pressure difference to press into the liquid storage of the liquid seal pool device, and at the same time enters the output nozzle to discharge. When the static pressure of the liquid in the infusion bottle is zero, the inlet pressure is equal to or slightly lower than the outlet pressure, and the depth of the hydrostatic seal inside the positive liquid seal remains unchanged, so as to realize the balance of the inlet and outlet pressures.
如图3-7所示，所述液封池装置1包括液封本体10、液封池空腔20、输入内管路30和输出内管路40；所述液封池空腔20设置于所述液封本体10内部，所述输入内管路30与所述液封池空腔20的输入管口201连接，所述输出内管路40与所述液封池空腔20的输出管口202连接。As shown in Figures 3-7, the liquid seal cell device 1 includes a liquid seal body 10, a liquid seal cell cavity 20, an input inner pipeline 30, and an output inner pipeline 40;
如图5-8所示，在本实施例中，所述输入内管路30和输出内管路40左右对称环绕设置于所述液封池空腔20周侧；优选的，所述液封池空腔20为圆形，所述输出管口202为凸形管口，进而便于药液液体通过输出管口202进入输出内管路40，当然，所述液封池空腔20和输出管口202也可以是其他形状，在此不做具体限制。As shown in FIGS. 5-8 , in this embodiment, the input inner pipeline 30 and the output inner pipeline 40 are symmetrically arranged around the cavity 20 of the liquid seal pool; preferably, the cavity 20 of the liquid seal pool is circular, and the output nozzle 202 is a convex nozzle, which facilitates the medicinal liquid to enter the output inner pipeline 40 through the output nozzle 202 .
如图9-12所示，在本实施例中，所述液封池空腔20包括第一空腔21、第二空腔22、空腔隔板23和空腔内通管24；其中，所述第一空腔21和第二空腔22通过所述空腔隔板23分隔开，所述空腔内通管24固定在所述空腔隔板23上用于连通所述第一空腔21和第二空腔22。所述空腔内通管24位于所述第一空腔21的部分为第一内通管241，所述空腔内通管24位于第二空腔22的部分为第二内通管242。优选的，所述液封池空腔20为圆柱形，当然，也可以是其他形状，在此不做具体限制。具体的，所述输入内管路30的高度为所述第一空腔21的高度的60％-90％，所述输出内管路40的高度为所述第二空腔22的高度的80％-90％，所述第一内通管241的高度为所述第一空腔21的高 度的80％-90％，所述第二内通管242的高度为所述第二空腔22的高度的60％-90％。As shown in FIGS. 9-12 , in this embodiment, the cavity 20 of the liquid-sealed pool includes a first cavity 21 , a second cavity 22 , a cavity partition 23 and a through-pipe 24 in the cavity; wherein, the first cavity 21 and the second cavity 22 are separated by the cavity partition 23 , and the through-pipe 24 in the cavity is fixed on the cavity partition 23 for communicating the first cavity 21 and the second cavity 22 . The part of the inner tube 24 located in the first cavity 21 is the first inner tube 241 , and the part of the cavity inner tube 24 located in the second cavity 22 is the second inner tube 242 . Preferably, the cavity 20 of the liquid-sealed pool is cylindrical, and of course, it may also be in other shapes, which are not specifically limited here. Specifically, the height of the input internal pipeline 30 is 60%-90% of the height of the first cavity 21, the height of the output internal pipeline 40 is 80%-90% of the height of the second cavity 22, and the height of the first internal communication pipe 241 is the height of the first cavity 21. 80%-90% of the height, the height of the second inner tube 242 is 60%-90% of the height of the second cavity 22.
在本实施例中，所述液封本体10为透明软体材料的液封本体，具体的，所述透明软体材料为TPE材质，或者，所述透明软体材料为含增塑剂DEHP的医用级PVC、MT或MD。由于液封本体10为透明软体材料的液封本体，在自动止液后通过轻轻挤压液封池装置，即可将液封池空腔内剩余药液液体输完，避免了药液浪费，有效保障治疗效果，大大提高护理质量，增强病患对护理人员的信任，有效促进护患关系和谐发展。In this embodiment, the liquid-sealed body 10 is a liquid-sealed body of a transparent soft material, specifically, the transparent soft material is made of TPE, or the transparent soft material is medical-grade PVC, MT or MD containing plasticizer DEHP. Since the liquid seal body 10 is a liquid seal body made of a transparent soft material, after the liquid is automatically stopped, by gently squeezing the liquid seal pool device, the remaining medicinal liquid in the cavity of the liquid sealed pool can be completely infused, which avoids the waste of medicinal liquid, effectively guarantees the therapeutic effect, greatly improves the quality of care, enhances the patient's trust in the nursing staff, and effectively promotes the harmonious development of the nurse-patient relationship.
本发明自动止液及防回血的输液器，在无人工干扰的情况下，液封空腔内仍然能够保留部分液体，从而阻止空气在药液输完后进入人体静脉，极大地减少了护理工作，减少了医患纠纷；在每次输液结束时，护理人员可以直接替换下一个输液瓶就可实现继续正常输液，无需护理人员再次手动将输液软管内存留的多余空气二次排出及重复确认输液软管内完全没有空气；自动止液后通过轻轻挤压液封池装置，即可将液封空腔内剩余药液输完，避免了药液浪费，有效保障治疗效果，大大提高护理质量，增强病患对护理人员的信任，有效促进护患关系和谐发展。The infusion device for automatic liquid stop and anti-blood return of the present invention can still retain part of the liquid in the liquid-sealed cavity without manual interference, thereby preventing air from entering the human vein after the liquid is infused, greatly reducing nursing work and reducing disputes between doctors and patients; at the end of each infusion, the nurse can directly replace the next infusion bottle to continue the normal infusion, and there is no need for the nurse to manually discharge the excess air in the infusion hose for a second time and repeatedly confirm that there is no air in the infusion hose; , the remaining medicinal liquid in the liquid-sealed cavity can be completely infused, avoiding the waste of medicinal liquid, effectively ensuring the therapeutic effect, greatly improving the quality of care, enhancing the trust of patients in nursing staff, and effectively promoting the harmonious development of nurse-patient relationship.
以上所述仅为本发明的较佳实施例而已，本领域技术人员知悉，在不脱离本发明的精神和范围的情况下，可以对这些特征和实施例进行各种改变或等同替换。另外，在本发明的教导下，可以对这些特征和实施例进行修改以适应具体的情况及材料而不会脱离本发明的精神和范围。因此，本发明不受此处所公开的具体实施例的限制，所有落入本申请的权利要求范围内的实施例都属于本发明的保护范围。 The above descriptions are only preferred embodiments of the present invention. Those skilled in the art know that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, the features and embodiments may be modified to adapt a particular situation and material to the teachings of the invention without departing from the spirit and scope of the invention. Therefore, the present invention is not limited by the specific embodiments disclosed here, and all embodiments falling within the scope of the claims of the present application belong to the protection scope of the present invention.
Claims (10)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210068650.4 | 2022-01-20 | ||
| CN202210068650.4A CN114247006B (en) | 2022-01-20 | 2022-01-20 | Infusion apparatus capable of automatically stopping liquid and preventing blood return |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023138704A1 true WO2023138704A1 (en) | 2023-07-27 |
Family
ID=80799735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2023/081329 Ceased WO2023138704A1 (en) | 2022-01-20 | 2023-03-14 | Automatic liquid-stop and blood-return-prevention infusion set |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN114247006B (en) |
| WO (1) | WO2023138704A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114247006A (en) * | 2022-01-20 | 2022-03-29 | 上海协贮智能科技服务有限公司 | Infusion apparatus capable of automatically stopping liquid and preventing blood return |
| CN117159840A (en) * | 2023-11-03 | 2023-12-05 | 吉林大学 | Accurate transfusion system based on bubble filtering is carried out in automatic pressure release |
| WO2025043978A1 (en) * | 2023-08-29 | 2025-03-06 | 江西洪达医疗器械集团有限公司 | Multifunctional infusion set |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115957391A (en) * | 2022-05-11 | 2023-04-14 | 雷建闽 | A self-adaptive pressure-regulating automatic liquid-stopping infusion device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1099653A (en) * | 1993-09-03 | 1995-03-08 | 黄升 | Safe transfusion apparatus with liquid sealing device |
| CN101057982A (en) * | 2007-05-30 | 2007-10-24 | 张幼禽 | Self-closing safety transfusion system |
| CN201085818Y (en) * | 2007-10-11 | 2008-07-16 | 苏鹏 | Disposable infusion device equipped with sealing barrel for preventing blood return |
| CN101985054A (en) * | 2010-12-15 | 2011-03-16 | 广东康尔美医疗器械有限公司 | Anti-blood backflow precision filtering infusion set |
| CN107596492A (en) * | 2017-09-29 | 2018-01-19 | 陈芳 | A kind of transfusion device back-flow preventer |
| CN108785789A (en) * | 2018-04-24 | 2018-11-13 | 赵月云 | A kind of hydrocone type anti-blood back medical transfusion device |
| KR20200105254A (en) * | 2019-02-28 | 2020-09-07 | 건양대학교산학협력단 | Prevention module on blood backflow for injection of ringer's solution |
| CN114247006A (en) * | 2022-01-20 | 2022-03-29 | 上海协贮智能科技服务有限公司 | Infusion apparatus capable of automatically stopping liquid and preventing blood return |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102908696A (en) * | 2011-08-01 | 2013-02-06 | 谢世庚 | Backflow liquid medicine filter for preventing blood return |
| CN102688533B (en) * | 2012-06-26 | 2015-04-29 | 电白县康尔美生物科技有限公司 | Self-stopping type accurate filtering transfusion apparatus capable of preventing blood return |
| CN103830796A (en) * | 2012-11-26 | 2014-06-04 | 湖南省绿洲惠康发展有限公司 | Disposable automatic liquid stopping and blood returning preventing infusion set free of bubbles |
| CN211584653U (en) * | 2019-09-22 | 2020-09-29 | 上海协贮智能科技服务有限公司 | Wireless infusion alarm |
-
2022
- 2022-01-20 CN CN202210068650.4A patent/CN114247006B/en active Active
-
2023
- 2023-03-14 WO PCT/CN2023/081329 patent/WO2023138704A1/en not_active Ceased
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1099653A (en) * | 1993-09-03 | 1995-03-08 | 黄升 | Safe transfusion apparatus with liquid sealing device |
| CN101057982A (en) * | 2007-05-30 | 2007-10-24 | 张幼禽 | Self-closing safety transfusion system |
| CN201085818Y (en) * | 2007-10-11 | 2008-07-16 | 苏鹏 | Disposable infusion device equipped with sealing barrel for preventing blood return |
| CN101985054A (en) * | 2010-12-15 | 2011-03-16 | 广东康尔美医疗器械有限公司 | Anti-blood backflow precision filtering infusion set |
| CN107596492A (en) * | 2017-09-29 | 2018-01-19 | 陈芳 | A kind of transfusion device back-flow preventer |
| CN108785789A (en) * | 2018-04-24 | 2018-11-13 | 赵月云 | A kind of hydrocone type anti-blood back medical transfusion device |
| KR20200105254A (en) * | 2019-02-28 | 2020-09-07 | 건양대학교산학협력단 | Prevention module on blood backflow for injection of ringer's solution |
| CN114247006A (en) * | 2022-01-20 | 2022-03-29 | 上海协贮智能科技服务有限公司 | Infusion apparatus capable of automatically stopping liquid and preventing blood return |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114247006A (en) * | 2022-01-20 | 2022-03-29 | 上海协贮智能科技服务有限公司 | Infusion apparatus capable of automatically stopping liquid and preventing blood return |
| CN114247006B (en) * | 2022-01-20 | 2024-02-20 | 上海协贮智能科技服务有限公司 | Infusion apparatus capable of automatically stopping liquid and preventing blood return |
| WO2025043978A1 (en) * | 2023-08-29 | 2025-03-06 | 江西洪达医疗器械集团有限公司 | Multifunctional infusion set |
| CN117159840A (en) * | 2023-11-03 | 2023-12-05 | 吉林大学 | Accurate transfusion system based on bubble filtering is carried out in automatic pressure release |
| CN117159840B (en) * | 2023-11-03 | 2024-01-05 | 吉林大学 | Accurate transfusion system based on bubble filtering is carried out in automatic pressure release |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114247006A (en) | 2022-03-29 |
| CN114247006B (en) | 2024-02-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2023138704A1 (en) | Automatic liquid-stop and blood-return-prevention infusion set | |
| KR200486088Y1 (en) | Liquid transfer devices for use with infusion liquid containers | |
| US5242392A (en) | Intravenous piggyback flush apparatus | |
| CN101791444A (en) | Safe bubble-free infusion set | |
| CN209475276U (en) | A kind of infusion apparatus | |
| CN204446782U (en) | A kind of transfusion device | |
| US20240252739A1 (en) | Flushing apparatus for use with an iv infusion set and an iv infusion set having an automatic flushing function | |
| CN106860949A (en) | Automatic liquid-stopping transfusion apparatus | |
| CN209060173U (en) | A kind of infusion apparatus of included triple valve | |
| CN208243850U (en) | A kind of safe infusion apparatus | |
| CN209270504U (en) | A kind of safety-type infusion apparatus | |
| CN216169190U (en) | Transfusion system capable of directly administering and connecting pump tube | |
| CN204563089U (en) | That rinses for venous chambers in a kind of No heparinization HD therapy process injects system | |
| CN105477750A (en) | Disposable automatic liquid-stop infusion apparatus | |
| CN208243853U (en) | Choke type remaining needle | |
| CN217853867U (en) | Multi-chamber static therapy medicine configuration liquid storage bag and dispensing device | |
| CN207306941U (en) | A kind of automatic liquid-stopping transfusion system | |
| CN217311156U (en) | An automatic flushing double-chamber infusion bag | |
| CN218589457U (en) | A dual-way drug delivery analgesic pump | |
| CN205948120U (en) | Transfer line with non return function | |
| CN205252202U (en) | Dedicated transfusion device for chemotherapy | |
| CN204106698U (en) | A kind of needleless connects automatic liquid-stopping infusion set | |
| CN219332761U (en) | Disposable medicine-adding automatic exhaust filtering blood return preventing infusion apparatus | |
| CN219579539U (en) | Venous return blood vessel circuit for hemodialysis treatment | |
| CN103100123A (en) | Blood return resistant dripping speed display tube |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 23743018 Country of ref document: EP Kind code of ref document: A1 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 23743018 Country of ref document: EP Kind code of ref document: A1 |
|
| 32PN | Ep: public notification in the ep bulletin as address of the adressee cannot be established |
Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 24.10.2024) |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 23743018 Country of ref document: EP Kind code of ref document: A1 |