CN201020120Y - Self-control disposable transfusion equipment - Google Patents

Abstract

The utility model relates to an automatic disposable infusion device, comprising an inlet pipe, a drop container and an outlet pipe. The conjunction between the drop container and the outlet pipe is a funnel shaped hopper. A small cone with a density less than that of water is arranged in the drop container. The sharp end of the cone points to the bottom of the hopper. With novel structure, reliable performance and easy access, the utility model can avoid back-bleeding during infusion, free from various risks such as microthrombus, air embolism and cross infection due to the blocked needle point.

Description

The automatic control type disposable transfusion device

Technical field

This utility model belongs to medical instruments field, relates to a kind of transfusion device.

Background technology

Venous transfusion is a kind of Therapeutic Method of importing a large amount of sterile solutions or medicine through vein.Venous transfusion is a physical principle of utilizing fluid pressure, and liquid is imported in the body.Infusion bottle or transfusion bag have an inlet and atmosphere to communicate, and connect rubber tube down.Liquid is subjected to the effect of atmospheric pressure in the bottle, makes liquid flow into rubber tube and forms water column, and when water column pressure during greater than venous pressure, the liquid in the bottle promptly flows into vein swimmingly.

Employed intravenous transfusion device in present domestic all big infirmaries, no matter what difference is its outward appearance have, its operation principle is all identical, its structure comprises that a breather connects particle size syringe needle (insertion is protected in the needle guard), and one of tube for transfusion comprises particle size syringe needle → feed tube → Murphy type burette → drain pipe → adapter → syringe needle (insertion is protected in the needle guard).All adopt high-order hang promptly to rely on gravity principle to infuse, this transfusion device inherent shortcoming be: (1) must have the main difference of position must be suspended on promptly that going up of patient is first could infuse, and there is certain height could guarantee the speed of transfusion, rescue as battlefield, field condition, the patient in transit operates in this case and just has certain degree of difficulty; A large amount of slight patients' transfusions in the hospital outpatient, because position is limited and can not arbitrarily moves, comings and goings such as go to toilet will be felt inconvenience very; Baby, child infuse in the fixed location, also can cry and scream, and are much troubled.(2) transfusion speed has certain restriction, when losing blood seriously, dewatering the high risk patient in rescue, can't infuse fast, and can not accurately control the speed of transfusion speed, just can't implement as need import how many medicinal liquids exactly in official hour.(3) in the infusion process, because of patient and family members call out untimelyly, the nurse makes an inspection tour untimely and causes in the tube for transfusion liquid level and drop to and drip the following situation of kettle and happen occasionally, and when patient infusion and medicinal liquid is defeated to the greatest extent the time, can cause the blood back phenomenon, and the time will be filled in syringe needle slightly for a long time with fixed attention.(4) pressure transfusion, unmanned guard on the side have the danger that aeroembolism takes place, and enter the venous air, at first are brought to right atrium, enter right ventricle again.Few as air capacity, then be pressed into pulmonary artery, and be distributed in the lung small artery by right ventricle, arrive blood capillary at last, thereby damage lessly, big as air capacity, then air enters the mouth obstructing arterial in right ventricle, blood can not be entered carry out gas exchange in the lung, cause severe depletion of oxygen, and the people's death of causing a disease.

Relatively more outstanding at present technical barrier causes the problem of " blood back " when being patient infusion.Venous transfusion is the work that accountability is very strong, because the patient infusion time is long, patient is easy to generate feeling of fatigue, in case medicinal liquid drips off, pulls out pin as the untimely nurse of notice, will blood back, and can cause medicinal liquid residual if pull out morning, cause waste.And the person of accompanying and attending to, patient, nurse have pressure at heart, and this has pulled out pin soon, all stares at always, fears to have dripped off blood back.As continuous transfusion, must pull up the syringe needle vein blood vessel that punctures again, cause suffering to the patient, make troubles to medical personnel.At present, the alarm device that is used for venous transfusion is a lot, 200510096914.3), the transfusion device of the reporting to the police automatically (patent No.: 200510015982.2), the pressure gasbag-type disposable transfusion device (patent No.: 200510007104.6), the portable multi-function safe transfusion system (patent No.: ZL200420073249.7) etc. as the method for CSRC transfusion and the monitoring infusion management system (patent No.:, but be that volume is big mostly, Heavy Weight, cost height, function singleness, be not easy to promote, can not get the approval of doctor and patient.

Summary of the invention

The purpose of this utility model is that existing intravenous transfusion device is improved, a kind of novel automatic control type disposable transfusion device is provided, has automatic control transfusion, avoid blood back to take place, safe ready, advantage such as simple and practical causes technical barriers such as " blood backs " in the time of can solving patient infusion preferably.

Automatic control type disposable transfusion device described in the utility model comprises feed tube, dropping liquid storehouse and drain pipe, and the link of described dropping liquid storehouse and drain pipe is funnelform funnel bin; Place the taper corpusculum of a density less than water in the described dropping liquid storehouse, its tip is towards the end of described funnel bin mouth.

Preferably, from the cross section, the funnel limit of the funnel bin of described dropping liquid storehouse and drain pipe is spent between 90 degree 15 to the angle of centrage, and the angle of the drift angle of described taper corpusculum matches with the end bicker degree of described funnel bin.

Automatic control type disposable transfusion device described in the utility model, traditional tube for transfusion (as Murphy type burette) is improved, with the bottom in dropping liquid storehouse is that the link of dropping liquid storehouse and drain pipe changes funnelform funnel bin into, and in the dropping liquid storehouse, place an inverted cone corpusculum, the density of this corpusculum is for example made with plastic or other material less than water.During normal infusion, the taper corpusculum in the dropping liquid storehouse can enter and floats because density is lower with medicinal liquid, does not influence to drip speed and show, does not also influence normal infusion process; When medicinal liquid transfusion finished, the taper corpusculum funneling dropping liquid storehouse in fell with liquid level, just in time blocks the end mouth of funnel bin, and transfusion device quits work, because the taper corpusculum can seal tube for transfusion automatically, thereby had avoided problem such as above-mentioned blood back.

Preferably, the contact surface of described taper corpusculum and described funnel bin is coarse, and for example, the outer surface of described taper corpusculum has carried out grinding process, and the inner surface of described funnel bin has also been carried out corresponding grinding process.

Because the inner surface of little external surface of taper and funnel bin has carried out grinding process, feasible all between the two a spot of liquid that stayed, the inner surface of funnel bin keeps the closed performance time can reach more than 24 hours because the tension force effect of liquid makes that the closed performance of taper corpusculum and funnel bin is better.Therefore, properly avoid medical personnel unnecessary worry and malpractice of causing because of medical negligence in for the patient infusion operating process.

Automatic control type disposable transfusion device described in the utility model has the following advantages: 1, the automatic close transfusion device of energy when transfusion finishes, end transfusion, and prevent to inject air and blood back phenomenon and take place; 2, can import medicament to greatest extent in human body, the phenomenon of having avoided wasting medicament for the termination transfusion in advance that tries to avert accidents takes place; Needn't labor intensive carry out special messenger's monitoring when 3, infusing, effectively avoid residual pharmacy that environment is polluted.This utility model novel structure, dependable performance, easy to operate, transfusion device factory only need increase some moulds and can produce.It can avoid occurring in the infusion process blood back phenomenon effectively, the obstruction syringe needle of avoiding blood back to bring, form all danger such as microthrombus, air embolism, cross infection, simultaneously can significantly reduce nursing staff's workload again, improve nursing quality and reduce doctor-patient dispute, utilize the pressure of the interior residual liquor of tube for transfusion of outfan below, dropping liquid storehouse, overcome patient's vein pressure, thereby reach the purpose that prevents the vein blood back.

In addition, because automatic control type infusion sets for single use described in the utility model has original advance and practicality, except that the daily wilderness demand of hospital, also relatively be fit to the medical apparatus and instruments emergency stock of major natural disasters such as army battlefield, national anti-terrorism medical aid, earthquake, fire and floods.Aspect environmental conservation, the raw materials used all non-flammable and explosive substance of this project, nontoxic does not have too much influence to environment; Only use the tap water cooling device just passable, water pollution-free.

Description of drawings

Fig. 1 is the structural representation of automatic control type disposable transfusion device described in the utility model.

Partial angular range in Fig. 2 displayed map 1.

Fig. 3 is the sketch map of automatic control type disposable transfusion device described in the utility model when transfusion is carried out.

Fig. 4 is the sketch map of automatic control type disposable transfusion device described in the utility model when transfusion is finished.

The specific embodiment

Automatic control type disposable transfusion device described in the utility model as shown in Figure 1, comprising: feed tube 1, dropping liquid storehouse 2 and drain pipe 3, and described dropping liquid storehouse 2 is funnelform funnel bin 4 with the link of drain pipe 3; Place the taper corpusculum 5 of a density less than water in the described dropping liquid storehouse 4, its tip is towards the end of described funnel bin 4 mouth.

As shown in Figure 2, from the cross section, the funnel limit of described funnel bin 4 is spent between 90 degree 15 to the angle of centrage, and the angle of the drift angle of described taper corpusculum 5 matches with the end bicker degree of described funnel bin 4.

As shown in Figure 1, described taper corpusculum 5 is coarse with the contact surface of described funnel bin 4, and the outer surface of described taper corpusculum 5 has carried out grinding process, and the inner surface of described funnel bin 4 has also carried out corresponding grinding process, and the dotted line place is burnishing part among the figure.

As shown in Figure 3, during normal infusion, the taper corpusculums 5 in the dropping liquid storehouse 2 are because density is lower, enter and float with medicinal liquid, do not influence to drip speed and show, also do not influence normal infusion process; As shown in Figure 4, when the medicinal liquid transfusion finished, the taper corpusculum 5 in the funneling dropping liquid storehouse 2 fell with liquid level, just in time blocked the end mouth of funnel bin 4, and transfusion device quits work, and taper corpusculum 5 can seal tube for transfusion automatically.

Claims (3)

1. the automatic control type disposable transfusion device comprises feed tube (1), dropping liquid storehouse (2) and drain pipe (3), it is characterized in that:

Described dropping liquid storehouse (2) is funnelform funnel bin (4) with the link of drain pipe (3);

Place the taper corpusculum (5) of a density less than water in the described dropping liquid storehouse (2), its tip is towards the end mouth of described funnel bin (4).

2. automatic control type disposable transfusion device according to claim 1, it is characterized in that: from the cross section, the funnel limit of described funnel bin (4) is spent between 90 degree 15 to the angle of centrage, and the angle of the drift angle of described taper corpusculum (5) matches with the end bicker degree of described funnel bin (4).

3. automatic control type disposable transfusion device according to claim 1 is characterized in that: described taper corpusculum (5) is coarse with the contact surface of described funnel bin (4).

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