技术领域technical field
本发明属于医疗器械领域，具体涉及一种快插式膜盒输液器。The invention belongs to the field of medical equipment, and in particular relates to a quick-insert capsule infusion set.
背景技术Background technique
一百多年来，静脉输液是国内外各级医疗机构的临床科室最普遍、最有效的治疗手段之一。据权威部门调查，医疗单位90%以上的临床住院患者都需接受输液治疗。而各外科住院患者几乎100%需要接受静脉输液治疗，我国约有十三亿人口，据统计，平均每人每年要输注液体8瓶，每年输液量可达100亿瓶。在医学科技发展的今天，常规的液体输注方法仍然还在使用一百多年前发明的“莫非氏”固定输液方式，据统计，全国生产“莫非氏”输液器的厂家有200多家。多年来莫非氏输液器在临床使用中主要存在患者体位相对固定、活动受限制、不能准确控制输液速度等诸多不便。For more than 100 years, intravenous infusion has been one of the most common and effective treatment methods in clinical departments of medical institutions at all levels at home and abroad. According to the investigation of the authoritative department, more than 90% of clinical inpatients in medical units need to receive infusion therapy. Almost 100% of hospitalized patients in various surgical departments need to receive intravenous infusion therapy. There are about 1.3 billion people in my country. According to statistics, each person needs to infuse 8 bottles of liquid per year on average, and the annual infusion volume can reach 10 billion bottles. Today, with the development of medical science and technology, the conventional liquid infusion method is still using the "Murphy's" fixed infusion method invented more than a hundred years ago. According to statistics, there are more than 200 manufacturers of "Murphy's" infusion sets nationwide. In the clinical use of Murphy's infusion sets for many years, there are many inconveniences such as relatively fixed patient positions, restricted activities, and inability to accurately control the infusion rate.
除传统的“莫非氏”输液器外，近年来还出现了气压式自动输液器、泵式自动输液器，单片机控制的便携式自动输液器。其缺点分别是离不开输液架悬挂液体，需要额外的电源和输液泵，输液泵体积大，需电力驱动或不断的人工充气等。总之很难在临床推广使用。In addition to the traditional "Murphy's" infusion set, there have also been pneumatic automatic infusion sets, pump type automatic infusion sets, and portable automatic infusion sets controlled by single-chip microcomputers in recent years. Its disadvantages are that it is inseparable from the infusion stand to suspend the liquid, and requires an additional power supply and infusion pump. The infusion pump has a large volume and needs to be driven by electricity or continuously artificially inflated. In short, it is difficult to promote the use in clinical practice.
实用新型专利CN202426961U公开了一种一次性膜盒输液器，能够在触发器的作用下实现液体定向流动，但其在说明中虽然提及了在液体输注完毕时，自动启动防止空气进入血液循环和防止血液倒流入输液管道的功能，保证了输注过程的安全性和有效性，但在整个技术方案中只是给出了以上解决问题的设想，并没有在技术方案中给出解决的手段。The utility model patent CN202426961U discloses a disposable capsule infusion set, which can realize the directional flow of liquid under the action of the trigger, but although it is mentioned in the description that when the liquid infusion is completed, it will automatically start to prevent air from entering the blood circulation. And the function of preventing blood from flowing back into the infusion pipeline ensures the safety and effectiveness of the infusion process, but in the whole technical scheme, only the above assumptions for solving the problem are given, and no solution is given in the technical scheme.
发明内容Contents of the invention
本发明的目的在于提供一种不仅能够改变传统的输液方式，不需要将输液瓶固定在高于患都的位置，能够将输液瓶放置在任何位置进行输液，且实现了防止空气进入血液循环和防止血液倒流入输液管道的功能的快插式膜盒输液器。The purpose of the present invention is to provide a method that not only can change the traditional infusion method, but also does not need to fix the infusion bottle at a position higher than the affected area, and can place the infusion bottle at any position for infusion, and realizes the prevention of air from entering the blood circulation and A quick-plug capsule infusion set with the function of preventing blood from flowing back into the infusion pipeline.
为了达到上述目的，本发明采用的技术方案是：包括一带有进液、出液接头的膜盒壳体，其中，进液、出液接头分别通过输液管与药液瓶、针头相连通，且在进液、出液接头上分别安装有进液锁定活瓣和出液口单向活瓣，在膜盒壳体的外侧安装有用于挤压膜盒壳体的弹性硅胶膜，弹性硅胶膜的外侧安装有与弹性硅胶膜相接触的触发器截锥触头，所述的膜盒壳体的膜盒腔内位于出液口单向活瓣的后端还设置有引流档，引流档一侧与膜盒壳体的内壁形成了捕气室，引流档的另一侧与膜盒壳体的内壁形成了排气道。In order to achieve the above object, the technical solution adopted by the present invention is: comprising a bellows housing with liquid inlet and liquid outlet joints, wherein the liquid inlet and liquid outlet joints are respectively connected with the liquid medicine bottle and the needle through the infusion tube, and A liquid inlet lock valve and a liquid outlet one-way valve are respectively installed on the liquid inlet and outlet joints, and an elastic silicone film for extruding the bellows shell is installed on the outside of the bellows shell. A trigger truncated cone contact in contact with the elastic silicone membrane is installed on the outside. The bellows cavity of the bellows housing is located at the rear end of the one-way valve of the liquid outlet and is also provided with a drainage stop. The air capture chamber is formed with the inner wall of the bellows housing, and the other side of the drainage shelf and the inner wall of the bellows shell form an exhaust channel.
所述的位于弹性膜的一侧的膜盒壳体上还设置有快装插头。The bellows casing located on one side of the elastic membrane is also provided with a quick-installation plug.
所述的药液瓶安装在支架上，且在支架上还设置有固定药液瓶的扎带和卡口。The liquid medicine bottle is installed on the bracket, and a cable tie and a bayonet for fixing the liquid medicine bottle are also arranged on the bracket.
本发明的膜盒腔的容积为10.5的密封腔体,在容器壳体上设计有进液锁定活瓣,出液单向活瓣，腔内设有引流档和排气通道，输注的液体依赖于壳体上设置的弹性膜，在触发器截锥体触头往复触动膜体作用下从而改变腔体容积，促动进液锁定活瓣关闭和出液口单向活瓣开放，使液体定向流入血管，根据频率往返顺序转变完成液体输注过程。The bellows cavity of the present invention is a sealed cavity with a volume of 10.5. The container shell is designed with a liquid-inlet locking valve and a liquid-out one-way valve. The cavity is provided with a drainage block and an exhaust channel. The infused liquid Relying on the elastic membrane set on the housing, under the action of the trigger truncated cone contact reciprocatingly touching the membrane body, the volume of the cavity is changed, the liquid inlet lock valve is closed and the liquid outlet one-way valve is opened, so that the liquid Orientation flows into the blood vessel, and the fluid infusion process is completed according to the sequence of frequency back and forth.
附图说明Description of drawings
图1是本发明液体定向流动结构示意图；Fig. 1 is a schematic diagram of the liquid directional flow structure of the present invention;
图2是本发明膜盒对微量气体识别和锁定功能示意图；Fig. 2 is a schematic diagram of the capsule of the present invention for identifying and locking functions of trace gases;
图3是本发明防止静脉返流功能示意图。Fig. 3 is a schematic diagram of the function of preventing venous reflux of the present invention.
其中，1针头；2输液管；3弹性硅胶膜；4出液接头；5出液口单向活瓣；6膜盒壳体；7膜盒腔；8进液插嘴；9进液锁定活瓣；10引流档；11捕气室；12快装插头；13触发器截锥触头；14药液；15排气道；16支架；17药液瓶；18扎带；19卡头。Among them, 1 needle; 2 infusion tube; 3 elastic silicone membrane; 4 liquid outlet joint; 5 liquid outlet one-way valve; 6 bellows shell; ; 10 Drainage file; 11 Air capture chamber; 12 Quick plug; 13 Trigger truncated cone contact; 14 Liquid medicine; 15 Exhaust duct;
具体实施方式detailed description
下面结合附图对本发明作进一步详细说明。The present invention will be described in further detail below in conjunction with the accompanying drawings.
参见图1，2，本发明包括一带有进液、出液接头8、4的膜盒壳体6，其中，进液、出液接头8、4分别通过输液管2与药液瓶17、针头1相连通，且在进液、出液接头8、4上分别安装有进液锁定活瓣9和出液口单向活瓣5，在膜盒壳体6的外侧安装有用于挤压膜盒壳体6的弹性硅胶膜3，弹性硅胶膜3的外侧安装有与弹性胶硅膜3相接触的触发器截锥触头13，位于弹性硅胶膜3的一侧的膜盒壳体6上还设置有快装插头12，所述的膜盒壳体6的膜盒腔7内位于出液口单向活瓣5的后端还设置有引流档10，引流档10一侧与膜盒壳体6的内壁形成了捕气室11，引流档10的另一侧与膜盒壳体6的内壁形成了排气道15。本发明的药液瓶17安装在支架16上，且在支架16上还设置有固定药液瓶17的扎带18和卡口19。Referring to Fig. 1, 2, the present invention comprises a bellows housing 6 with liquid inlet and outlet connectors 8, 4, wherein, the liquid inlet and outlet connectors 8, 4 respectively pass through the infusion tube 2 and the liquid medicine bottle 17, the needle 1 is connected, and the liquid inlet lock valve 9 and the liquid outlet one-way valve 5 are respectively installed on the liquid inlet and outlet joints 8 and 4, and a valve for squeezing the membrane box is installed on the outside of the bellows housing 6. The elastic silicone membrane 3 of the housing 6, the trigger truncated cone contact 13 in contact with the elastic silicone membrane 3 is installed on the outside of the elastic silicone membrane 3, and the bellows housing 6 on one side of the elastic silicone membrane 3 is also A quick-loading plug 12 is provided, and the bellows cavity 7 of the bellows housing 6 is located at the rear end of the one-way valve 5 at the liquid outlet. A drainage shelf 10 is also provided, and one side of the drainage shelf 10 is connected to the bellows shell. The inner wall of 6 forms the air trapping chamber 11 , and the other side of the drainage shelf 10 and the inner wall of the bellows housing 6 form an exhaust channel 15 . The liquid medicine bottle 17 of the present invention is installed on the bracket 16 , and the tie 18 and bayonet 19 for fixing the liquid medicine bottle 17 are also arranged on the bracket 16 .
使用时将药液瓶17安装在支架16上，通过扎带18和卡口19固定药液瓶，然后再通过快装插头12将膜盒壳体6固定后，通过输液管分别将药液瓶与膜盒壳体的进液插嘴、针头与出液插嘴相连通。When in use, the liquid medicine bottle 17 is installed on the bracket 16, the liquid medicine bottle is fixed by the cable tie 18 and the bayonet 19, and then the capsule housing 6 is fixed by the quick-loading plug 12, and the liquid medicine bottle is respectively fixed by the infusion tube. It communicates with the liquid inlet nozzle, the needle and the liquid outlet nozzle of the bellows casing.
本发明液体定向流动功能：由图1可以看出,药液14进入膜盒腔7,占去所有空间后,形成一个完整的液体包,这时触发器截锥触头13前进移动，弹性膜3向腔内弯曲变形，VB等于零，这时药液14受到挤压，由于药液14受压不会缩小，挤压力传递给出液口单向活瓣5，出液口单向活瓣5脱离原位形成通道,受压药液排出膜盒腔7进入输液管2中，产生输注药液动力，与此同时进液锁定活瓣9因受膜盒腔内液体挤压，锁定活瓣紧贴封面，锁定液体不可倒流。当触发器截锥触头13复位时，弹性硅胶膜3弯曲变形随之失去VB=-VB，膜盒腔7内产生相当于弯曲变形体积VB的真空度。出液口单向活瓣5复位紧贴封面，进液锁定活瓣9在负压作用下开启，药液进入膜盒腔7内，以此循环往复，药液瓶17药液就源源不断的吸入膜盒腔,再由膜盒腔输出经针头1注入人体静脉。Liquid directional flow function of the present invention: It can be seen from Fig. 1 that the liquid medicine 14 enters the bellows chamber 7 and takes up all the space to form a complete liquid package. At this time, the trigger truncated cone contact 13 moves forward, and the elastic membrane 3 bends and deforms in the cavity, and VB is equal to zero. At this time, the medicinal liquid 14 is squeezed. Since the medicinal liquid 14 is compressed, it will not shrink, and the extrusion force is transmitted to the one-way valve 5 at the liquid outlet, and the one-way valve at the liquid outlet. 5 breaks away from the original position to form a channel, and the pressurized liquid medicine is discharged from the bellows chamber 7 into the infusion tube 2 to generate power for infusion of the medicine liquid. The flap is tightly attached to the cover, and the locking liquid cannot flow back. When the trigger truncated cone contact 13 is reset, the elastic silicone membrane 3 bends and deforms and then loses VB=-VB, and the vacuum degree equivalent to the bending deformation volume VB is generated in the bellows cavity 7 . The one-way valve 5 of the liquid outlet is reset and close to the cover, and the liquid inlet lock valve 9 is opened under the action of negative pressure, and the liquid medicine enters the bellows cavity 7, and in this way, the liquid medicine bottle 17 is continuously filled with liquid medicine. It is inhaled into the bellows cavity, and then it is output from the bellows cavity and injected into the human vein through the needle 1.
微量气体识别和锁定功能：参见图2，本发明在膜盒输注途中，可能出现空气进入膜盒腔7内的情况，由于空气和液体的比重为3.2：1000，气体在液体内会迅速上浮，并直线上升，占领最高点，由图2可以看出，膜盒腔7最高点设计有捕气室11供气体容纳。捕气室11的气体由于弹性膜3往复移动变形，液体压力正负交变，当膜盒腔正压时液体中气体受其压力的作用。因气体密度是液体的3.2/1000受液体压力而使气体体积缩小，吸收了液体的压强。这时液体没有足够的挤压力推动出液单项活瓣开启，膜盒腔内液体不会向出口流动。当膜盒腔负压时，液体中气体膨胀，破坏了膜盒腔内真空，进液锁定活瓣无压差推动而处于关闭，造成输液过程中断。此时单向出液活瓣处于关闭状态，由于静脉压力和输液管余压无法释放，输注压力与静脉压力持平，药液不进，静脉血液不会倒流。Trace gas identification and locking function: see Figure 2, during the infusion of the capsule in the present invention, air may enter the cavity 7 of the capsule, and since the specific gravity of air and liquid is 3.2:1000, the gas will float rapidly in the liquid , and rise straight up to occupy the highest point, as can be seen from Figure 2, the highest point of the bellows chamber 7 is designed with an air trapping chamber 11 for gas accommodation. The gas in the air-trapping chamber 11 is deformed due to the reciprocating movement of the elastic membrane 3, and the liquid pressure alternates between positive and negative. When the bellows cavity is under positive pressure, the gas in the liquid is affected by its pressure. Because the density of the gas is 3.2/1000 of the liquid, the volume of the gas is reduced by the pressure of the liquid, absorbing the pressure of the liquid. At this time, the liquid does not have enough squeezing force to push the single outlet valve to open, and the liquid in the bellows cavity will not flow to the outlet. When the bellows cavity is under negative pressure, the gas in the liquid expands, destroying the vacuum in the bellows cavity, and the fluid-inlet locking valve is closed without pressure difference, causing the infusion process to be interrupted. At this time, the one-way liquid outlet valve is in a closed state, and since the venous pressure and the residual pressure of the infusion tube cannot be released, the infusion pressure is equal to the venous pressure, so that the medicinal liquid does not enter, and the venous blood does not flow back.
该原理的重点是：①空气的比重是液体（水）比重的3.2/1000（上浮）；②空气的密度是液体（水）密度的3.2/1000（气体可压缩）；③液体不可压缩（一般情况）；④气在水中直线上浮（一般情况）；⑤气体在水中上浮到最高点（如水平仪）。The key points of this principle are: ① The specific gravity of air is 3.2/1000 of the specific gravity of liquid (water) (floating); ② The density of air is 3.2/1000 of the density of liquid (water) (compressible gas); ③ Liquid is incompressible (generally ④The gas floats straight up in the water (general situation); ⑤The gas floats up to the highest point in the water (such as a spirit level).
防止血液返流功能：参见图3，当液体输注完毕时，触发器截锥触头停止往复运动，弹性膜终止振动。在正常输液过程中，膜盒输注压力P注＞P管道阻力＋静脉压力P脉，P注＞(P阻＋P脉，P注－(P阻＋P脉)＝△，在定向流动压力△P的作用下，药液沿输液管注入静脉血管。Blood backflow prevention function: see Figure 3, when the liquid infusion is completed, the truncated cone contact of the trigger stops reciprocating motion, and the elastic membrane stops vibrating. During the normal infusion process, the capsule infusion pressure P Note > P pipe resistance + venous pressure P pulse, P Note > (P resistance + P pulse, P Note - (P resistance + P pulse) = △, in the directional flow pressure △P Under the action of the medicine liquid is injected into the vein along the infusion tube.
当输液完毕时：输注流速为零，管道阻力消失P阻＝0。定向流动压力△P＝0，P注－P脉＝0，在弹性硅胶膜变形张力（贮能）作用下P注＝P脉，在膜盒贮能释放作用下，静脉血压力和输液管内压平衡，使血液不会倒流入针头引起阻塞。When the infusion is completed: the infusion flow rate is zero, and the pipeline resistance disappears, P resistance = 0. Directional flow pressure △ P = 0, P note - P pulse = 0, P note = P pulse under the action of elastic silicone membrane deformation tension (energy storage), under the release of the membrane box energy storage, venous blood pressure and infusion tube internal pressure Balanced so that blood does not flow back into the needle causing blockage.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310123793.1ACN103212132B (en) | 2013-04-10 | 2013-04-10 | Push-in bellows transfusion device |
| PCT/CN2013/077305WO2014166156A1 (en) | 2013-04-10 | 2013-06-17 | Quick-insertion membrane pump-type transfusion device |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310123793.1ACN103212132B (en) | 2013-04-10 | 2013-04-10 | Push-in bellows transfusion device |
| Publication Number | Publication Date |
|---|---|
| CN103212132A CN103212132A (en) | 2013-07-24 |
| CN103212132Btrue CN103212132B (en) | 2016-01-20 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310123793.1AActiveCN103212132B (en) | 2013-04-10 | 2013-04-10 | Push-in bellows transfusion device |
| Country | Link |
|---|---|
| CN (1) | CN103212132B (en) |
| WO (1) | WO2014166156A1 (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86206279U (en)* | 1986-08-28 | 1987-05-20 | 孙连峰 | Intravenous pressure infusion unit |
| CN2568198Y (en)* | 2002-08-29 | 2003-08-27 | 欣慰 | Portable multifunctional safety transfusion system |
| CN1642589A (en)* | 2002-03-14 | 2005-07-20 | 梅杜克斯公司 | Ambulatory infusion membrane pump |
| CN101708350A (en)* | 2008-07-25 | 2010-05-19 | Wwt工程建筑设备有限公司 | Fluid warming bag and bag heater |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6302653B1 (en)* | 1999-07-20 | 2001-10-16 | Deka Products Limited Partnership | Methods and systems for detecting the presence of a gas in a pump and preventing a gas from being pumped from a pump |
| JP5595930B2 (en)* | 2008-01-23 | 2014-09-24 | デカ・プロダクツ・リミテッド・パートナーシップ | Disposable components for fluid line automatic connection systems |
| CN101927044A (en)* | 2010-09-28 | 2010-12-29 | 柯丽红 | Intravenous infusion set capable of exhausting air automatically |
| US8382711B2 (en)* | 2010-12-29 | 2013-02-26 | Baxter International Inc. | Intravenous pumping air management systems and methods |
| CN202426961U (en)* | 2012-02-02 | 2012-09-12 | 中国人民解放军第四军医大学 | Disposable bellows transfusion device |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86206279U (en)* | 1986-08-28 | 1987-05-20 | 孙连峰 | Intravenous pressure infusion unit |
| CN1642589A (en)* | 2002-03-14 | 2005-07-20 | 梅杜克斯公司 | Ambulatory infusion membrane pump |
| CN2568198Y (en)* | 2002-08-29 | 2003-08-27 | 欣慰 | Portable multifunctional safety transfusion system |
| CN101708350A (en)* | 2008-07-25 | 2010-05-19 | Wwt工程建筑设备有限公司 | Fluid warming bag and bag heater |
| Publication number | Publication date |
|---|---|
| WO2014166156A1 (en) | 2014-10-16 |
| CN103212132A (en) | 2013-07-24 |
| Publication | Publication Date | Title |
|---|---|---|
| CN203989265U (en) | A kind of preventing thrombosis venous detaining needle | |
| CN102188761B (en) | A kind of positive-pressure pinch valve | |
| CN108837229A (en) | A kind of air force medical fluid conveying device | |
| CN102973997B (en) | Multifunctional venous infusion apparatus | |
| CN204596297U (en) | A kind of simulation vein puncture device | |
| CN103212132B (en) | Push-in bellows transfusion device | |
| CN206063467U (en) | A kind of wound surface perfusion and closed drainage device | |
| CN205108505U (en) | Multi -functional negative pressure drainage device | |
| CN209827805U (en) | Tube flushing and sealing device for venous indwelling needle | |
| CN217697409U (en) | A continuous negative pressure suction device with anti-suckback function | |
| CN211611089U (en) | A constant pressure infusion device | |
| CN109172936A (en) | A kind of portable infusion apparatus | |
| CN104998323B (en) | It is a kind of to continue slow liquid dispensing apparatus and its installation method | |
| CN210541673U (en) | Water injection and suction device of eyelid retractor | |
| CN202173633U (en) | Enemator | |
| CN202223666U (en) | Portable transfusion device | |
| CN207493020U (en) | A kind of Full-automatic portable infusion pump | |
| CN101121046A (en) | Compressed Air Infusion Set | |
| CN202191547U (en) | Intelligent infusion device | |
| CN209220979U (en) | Liquid volume adjustable negative pressure liquid extraction device | |
| CN203694281U (en) | Automatic exhausting and liquid stopping device | |
| CN222752374U (en) | Intravenous infusion device for pump | |
| CN209475265U (en) | A compressed retention enema | |
| CN211096601U (en) | An infusion device with anti-reflux function | |
| CN210932826U (en) | A kind of nursing device for gastrointestinal surgery |
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |