CN104138628B - A kind of automatic liquid-stopping dropping funnel - Google Patents

A kind of automatic liquid-stopping dropping funnel Download PDF

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Publication number
CN104138628B
CN104138628B CN201310191573.2A CN201310191573A CN104138628B CN 104138628 B CN104138628 B CN 104138628B CN 201310191573 A CN201310191573 A CN 201310191573A CN 104138628 B CN104138628 B CN 104138628B
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Prior art keywords
dropping funnel
interior
liquid
chamber
stopping
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CN104138628A (en
Inventor
马之骁
田学飞
王锡彬
许丹丹
郝甜甜
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Shandong Weigao Group Medical Polymer Co Ltd
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Shandong Weigao Group Medical Polymer Co Ltd
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Abstract

The invention discloses a kind of automatic liquid-stopping dropping funnel, comprise dropping funnel lid and dropping funnel body, dropping funnel lid is arranged on the top of dropping funnel body, it is characterized in that, described dropping funnel body is made up of interior dropping funnel, outer dropping funnel, dropping funnel chamber in interior dropping funnel inwall is combined with dropping funnel lid and forms, and interior dropping funnel top of chamber is combined with steam vent, the dropping funnel on top, interior dropping funnel chamber covers and is provided with dropping funnel feed tube, and the interior dropping funnel liquid outlet top of interior dropping funnel bottom is provided with only liquid filter membrane; Outer dropping funnel inwall, dropping funnel lid and interior dropping funnel outer wall combine the outer dropping funnel chamber of composition, and outer dropping funnel chamber is combined with can the air inlet of folding, and bottom, outer dropping funnel chamber is provided with dropping funnel liquid outlet.This dropping funnel is rational in infrastructure, only liquid is reliable for effect, processing technique is simple, easy to operate.

Description

A kind of automatic liquid-stopping dropping funnel
Technical field
The invention belongs to medical instruments field, relate to one and carry out venous transfusion medical apparatus and instruments to clinical patients, a kind of automatic liquid-stopping dropping funnel specifically.
Technical background
At present, disposable infusion set is conventional medical apparatus and instruments, and it generally comprises bottle plug puncture unit, dropping funnel, flow regulator, liquid medicine filter, venoclysis needle, they is chained together by transfusion catheter.Medicinal liquid flows into through bottle plug puncture unit, through the outlet of dropping funnel, flows into transfusion catheter, enters human body through liquid medicine filter, venoclysis needle.In clinical transfusion process, family members is needed to pay close attention to the liquid level of medicinal liquid, otherwise there will be infusion bottle inner liquid medicine be totally lost and do not changed infusion bottle in time or extract the phenomenon of intravenous infusion syringe, this can cause in blood backflow to catheter of transfusion system or liquid level declines too low and causes gas to enter human body causing the adverse consequencess such as aeroembolism.If patient continues transfusion, the air-treatment in the pipeline of dropping funnel lower end need be fallen, the air in conduit squeezes in residual titration bucket by the mode usually adopting extruding to be wound around conduit, or extracts intravenous needle and re-start bleeding and change intravenous needle and carry out venipuncture again.Above two kinds of methods are all loaded down with trivial details time-consuming, add the labor intensity of medical personnel and the mental burden of patient.
For above problem, people are conceived to improve infusion unit titrimeter, create a series of automatic liquid-stopping transfusion apparatus.But current Perfusion drip funnel many employings buoy realizes automatic liquid-stopping function, as Chinese invention patent ZL201210284440.5 safety automation liquid-controlled open-close valve, Chinese patent application 201210067717.9 transfusion device point dropping funnel, Chinese patent application 201310032521.0 1 kinds of automatic liquid-stopping dropping funnels and there is the transfusion device of this dropping funnel.This transfusion device be by buoy by medicinal liquid buoyancy impact blocking tube for transfusion reach automatic liquid-stopping effect.The defect that tradition buoy stops the existence of drop bucket mainly contains: (1) only liquid effect is subject to the impact of medicine liquid ingredient and degree of purity comparatively greatly, slightly impurity, granule, and plastic buoy just cannot coincide with tube for transfusion, thus loses automatic liquid-stopping function, formation hidden danger of quality; (2) require very high to the adaptation of buoy accessory and tube for transfusion seam, thus require very harsh to the production and processing mode of above two accessories, as the control of the precision of mould, raw-material selection, production process, plastic fittings all need a large amount of checkings and control whether producing distortion etc. after sterilizing, careless slightly by directly causing product to lose automatic liquid-stopping function, cause quality problems; (3) buoy is arranged on below dropping funnel, and liquid level drops to buoy blocking dropping funnel liquid outlet to a certain degree, reaches only liquid object, and this only liquid mode liquid level can drop to 1/3 even near dropping funnel liquid outlet place under dropping funnel chamber usually.If need to continue transfusion, need ullage air to discharge.
Summary of the invention
The technical problem to be solved in the present invention overcomes above-mentioned the deficiencies in the prior art, provides a kind of rational in infrastructure, automatic liquid-stopping dropping funnel that only liquid is reliable for effect, processing technique is simple, easy to operate.
Technical scheme of the present invention is, a kind of automatic liquid-stopping dropping funnel, comprise dropping funnel lid and dropping funnel body, dropping funnel lid is arranged on the top of dropping funnel body, described dropping funnel body is made up of interior dropping funnel, outer dropping funnel, dropping funnel chamber in interior dropping funnel inwall is combined with dropping funnel lid and forms, and interior dropping funnel top of chamber is combined with steam vent, the dropping funnel on top, interior dropping funnel chamber covers and is provided with dropping funnel feed tube, and the interior dropping funnel liquid outlet top of interior dropping funnel bottom is provided with only liquid filter membrane; Outer dropping funnel inwall, dropping funnel lid and interior dropping funnel outer wall combine the outer dropping funnel chamber of composition, and outer dropping funnel chamber is combined with can the air inlet of folding, and bottom, outer dropping funnel chamber is provided with dropping funnel liquid outlet.
Described only liquid filter membrane is fixed on the supporting surface of interior dropping funnel bottom by ultrasonic welding process or heat seal process or mechanical press technique.
Described steam vent is provided with exhaust gas filter film, exhaust gas filter film is hydrophobic air filter membrane, is fixed on dropping funnel covers by ultrasonic welding process or heat seal process or mechanical press technique.
Described air inlet is arranged inlet air filtration film, inlet air filtration film is hydrophobic air filter membrane, and inlet air filtration film is fixed dropping funnel by ultrasonic welding process or heat seal process or mechanical press technique and covered.Air inlet is outside equipped with gland, can open, close air inlet.
The dropping funnel on described dropping funnel body top covers and is provided with liquid injection device.
The present invention adopts membrane material to realize dropping funnel automatic liquid-stopping function, should stop drop bucket structure simple, reliable for effect, easy to use.When the fast infusion of medicinal liquid is complete, stop the effect of liquid filter membrane surface tension force at interior dropping funnel under, venous pressure in transfusion tube wall and gravitative pressure active force and filter membrane equalization of strain, make medicinal liquid rest in transfusion device under the comprehensive function power of i.e. atmospheric pressure, hydrostatic pressing, human vein, reach the function of automatic liquid-stopping; Directly can insert in new infusion bottle by this transfusion device as continued transfusion, the air in the transfusion catheter of dropping funnel upper end and the air in interior dropping funnel can be discharged by steam vent on interior dropping funnel automatically, thus realize the continuous transfusion function after automatic liquid-stopping; After all having infused, open the air inlet on outer dropping funnel, outside air can enter outer dropping funnel chamber, is continued to be infused into patient's intravenous by the medicinal liquid in dropping funnel and dropping funnel lower end pipeline, realize the complete infusion of medicinal liquid truly, avoid and lessen the curative effect because of liquid waste.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is partial enlarged drawing of the present invention;
Label in figure is: in 1 dropping funnel lid, 2 dropping funnel bodies, 3 in dropping funnel, 4 outer dropping funnels, 5 in dropping funnel inwall, 6 in dropping funnel outer wall, 7 outer dropping funnel inwalls, 8 dropping funnel chamber, 9 outer dropping funnel chambeies, 10 stop dropping funnel liquid outlet in liquid filter membrane, 11 supporting surfaces, 12,13 steam vents, 14 exhaust gas filter films, 15 dropping funnel feed tubes, 16 air inlets, 17 inlet air filtration films, 18 glands, 19 dropping funnel liquid outlets, 20 liquid injection devices.
Detailed description of the invention
As depicted in figs. 1 and 2, a kind of automatic liquid-stopping dropping funnel, comprise dropping funnel lid 1 and dropping funnel body 2, dropping funnel lid 1 is arranged on the top of dropping funnel body 2, described dropping funnel body 2 is made up of interior dropping funnel 3, outer dropping funnel 4, dropping funnel chamber 8 in interior dropping funnel inwall 5 is combined with dropping funnel lid 1 and forms, and top, interior dropping funnel chamber 8 is combined with steam vent 13, the dropping funnel lid 1 on top, interior dropping funnel chamber 8 is provided with dropping funnel feed tube 15, and interior dropping funnel liquid outlet 12 top of interior dropping funnel 3 bottom is provided with only liquid filter membrane 10; Outer dropping funnel inwall 7, dropping funnel lid 1 and interior dropping funnel outer wall 6 combine the outer dropping funnel chamber 9 of composition, and outer dropping funnel chamber 9 is combined with can the air inlet 16 of folding, and bottom, outer dropping funnel chamber 9 is provided with dropping funnel liquid outlet 19.
As shown in Figure 2, only liquid filter membrane 10 is fixed on the supporting surface 12 of interior dropping funnel bottom by ultrasonic welding process or heat seal process or mechanical press technique.Steam vent 13 is provided with exhaust gas filter film 14, exhaust gas filter film 14 is hydrophobic air filter membrane, is fixed on dropping funnel lid 1 by ultrasonic welding process or heat seal process or mechanical press technique.Air inlet 16 is arranged inlet air filtration film 17, inlet air filtration film 17 is hydrophobic air filter membrane, and inlet air filtration film 17 is fixed on dropping funnel lid 1 by ultrasonic welding process or heat seal process or mechanical press technique.Air inlet 16 is outside equipped with gland 18, can open, close air inlet 16.
In the embodiment of the present invention, in infusion process, air inlet 16 closes, when the medicinal liquid in infusion bottle completes infusion, after only liquid filter membrane 10 automatic liquid-stopping of interior dropping funnel 3 bottom, as needs of patients change infusion bottle proceed infusion time, can the transfusion device with this dropping funnel directly be inserted in new infusion bottle, air in dropping funnel feed tube 15 and in interior dropping funnel chamber 8 can be discharged to the external world by steam vent 13 at this moment in interior dropping funnel chamber 8 automatically, along with the discharge gradually of air in transfusion device, newly change infusion bottle herb liquid will continue to flow into interior dropping funnel chamber 8, flowing into outer dropping funnel chamber 9 through interior dropping funnel liquid outlet 12 enters in transfusion catheter, thus realize the continuous transfusion function after automatic liquid-stopping.
After whole infusion process completes, due to the existence of automatic liquid-stopping function, medicinal liquid under dropping funnel and dropping funnel in tube for transfusion cannot continue the intravenous being infused into patient, now, the air inlet 16 being in normally off can be opened by medical personnel, such outside air enters into outer dropping funnel chamber 9 after being filtered by inlet air filtration film 17, thus the medicinal liquid in dropping funnel and its lower end transfusion catheter can be continued to be infused into patient's intravenous, realize the complete infusion of medicinal liquid truly, avoid and lessen the curative effect because of liquid waste.

Claims (6)

1. an automatic liquid-stopping dropping funnel, comprise dropping funnel lid and dropping funnel body, dropping funnel lid is arranged on the top of dropping funnel body, it is characterized in that, described dropping funnel body is made up of interior dropping funnel, outer dropping funnel, dropping funnel chamber in interior dropping funnel inwall is combined with dropping funnel lid and forms, and interior dropping funnel top of chamber is combined with steam vent, the dropping funnel on top, interior dropping funnel chamber covers and is provided with dropping funnel feed tube, and the interior dropping funnel liquid outlet top of interior dropping funnel bottom is provided with only liquid filter membrane; Outer dropping funnel inwall, dropping funnel lid and interior dropping funnel outer wall combine the outer dropping funnel chamber of composition, outer dropping funnel chamber is combined with can the air inlet of folding, bottom, outer dropping funnel chamber is provided with dropping funnel liquid outlet, air inlet is outside equipped with gland, can open, close air inlet, the dropping funnel on described dropping funnel body top covers and is provided with liquid injection device.
2. automatic liquid-stopping dropping funnel according to claim 1, is characterized in that, described only liquid filter membrane is fixed on the supporting surface of interior dropping funnel bottom by ultrasonic welding process or heat seal process or mechanical press technique.
3. automatic liquid-stopping dropping funnel according to claim 1, is characterized in that, described steam vent is provided with exhaust gas filter film, and exhaust gas filter film is hydrophobic air filter membrane.
4. automatic liquid-stopping dropping funnel according to claim 3, is characterized in that, exhaust gas filter film is fixed on dropping funnel by ultrasonic welding process or heat seal process or mechanical press technique and covers.
5. automatic liquid-stopping dropping funnel according to claim 1, is characterized in that, described air inlet is provided with inlet air filtration film, and inlet air filtration film is hydrophobic air filter membrane.
6. automatic liquid-stopping dropping funnel according to claim 5, is characterized in that, inlet air filtration film is fixed on dropping funnel by ultrasonic welding process or heat seal process or mechanical press technique and covers.
CN201310191573.2A 2013-05-22 2013-05-22 A kind of automatic liquid-stopping dropping funnel Active CN104138628B (en)

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CN201310191573.2A CN104138628B (en) 2013-05-22 2013-05-22 A kind of automatic liquid-stopping dropping funnel

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CN104138628B true CN104138628B (en) 2016-04-20

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104587569B (en) * 2015-02-06 2018-02-02 四川南格尔生物科技有限公司 A kind of Novel bubble-prevention infusion device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2696818A (en) * 1953-02-10 1954-12-14 Stichting Tot Instandhouding V Combined filtering and drop-counting device for blood transfusion administering systems
US4116646A (en) * 1977-05-20 1978-09-26 Millipore Corporation Filter unit
CN101927043A (en) * 2010-09-28 2010-12-29 柯丽红 Medical intravenous infusion set
CN102389603A (en) * 2011-11-20 2012-03-28 戎静华 Automatic air discharging system of infusion device capable of preventing blood return
CN202355643U (en) * 2011-11-28 2012-08-01 上海宝舜医疗器械有限公司 Self-infusion-stopping type dripping bucket with self-air-eliminating function
CN203291320U (en) * 2013-05-22 2013-11-20 山东威高集团医用高分子制品股份有限公司 Automatic liquid stopping drip chamber

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2696818A (en) * 1953-02-10 1954-12-14 Stichting Tot Instandhouding V Combined filtering and drop-counting device for blood transfusion administering systems
US4116646A (en) * 1977-05-20 1978-09-26 Millipore Corporation Filter unit
CN101927043A (en) * 2010-09-28 2010-12-29 柯丽红 Medical intravenous infusion set
CN102389603A (en) * 2011-11-20 2012-03-28 戎静华 Automatic air discharging system of infusion device capable of preventing blood return
CN202355643U (en) * 2011-11-28 2012-08-01 上海宝舜医疗器械有限公司 Self-infusion-stopping type dripping bucket with self-air-eliminating function
CN203291320U (en) * 2013-05-22 2013-11-20 山东威高集团医用高分子制品股份有限公司 Automatic liquid stopping drip chamber

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Inventor after: Ma Zhixiao

Inventor after: Tian Xuefei

Inventor after: Wang Xibin

Inventor after: Xu Dandan

Inventor after: Hao Tiantian

Inventor before: Ma Zhixiao

Inventor before: Tian Xuefei

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