CN2078169U

CN2078169U - Automatic pressurized infusion device

Info

Publication number: CN2078169U
Application number: CN 90222167
Authority: CN
Inventors: 傅国栋; 杨小莹
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-10-20
Filing date: 1990-10-20
Publication date: 1991-06-05

Abstract

The utility model relates to an automatic pressurized infusion device, which is a closed-type infusion device through which medium is led into the human body. A diaphragm pump is driven through a motor, connected with an air filter through a guiding pipe, and communicated with a constant-pressure air bag. The guiding pipe on the air outlet of the air bag is communicated with a three-way member; one way of the three-way member is communicated with a barometer, and one way is connected with an air supply valve; the guiding pipe led from the air supply valve is connected to an air needle, the air needle is inserted into the infusion bottle, and the operations of aeration and pressurization can be realized. The device realizes the mechanized operation; the infusion speed is homogeneous and adjustable; simultaneously, the infusion is carried out through a closed circuit; accordingly, the situation of the complicating diseases, such as infusion reaction, etc. caused through the physic liquor pollution is avoided.

Description

Automatic pressurized infusion device

This utility model relates to a kind ofly introduces intravital apparatus with medium, specifically a kind of infusion apparatus.

At present, most of medical institutions all adopt open transfusion, promptly utilize the nature atmospheric pressure to squeeze liquid in the infusion bottle, reach intravenous purpose.Its advantage is to use conveniently, and expense is low.But owing to contain a large amount of dust and antibacterial in the air, and, cause liquid medicine contamination with the air admission medicinal liquid.Because of being to inject vein,, certain height is arranged in addition, cause certain inconvenience for clinical use to keep infusion bottle so must use drip stand etc. by medicinal liquid gravity.When particularly needing transfusion fast, blood transfusion for the critical patient, existing this device then can not meet the demands fully.The various apparatus and method of pressure transfusion are arisen at the historic moment for this reason, and its mode has three classes substantially: one, directly smooth out with the fingers transfusion catheter with hands, two, on transfusion catheter, add one the cover roller devices, by the rotation of roller, the compressing conduit; Three, be concatenated into an inflation branch road by balloon, check valve, airbag and conduit, inflation pressurization in infusion bottle (or transfusion bags).When transfusing blood, very easily oppress the blood cell wall for first and second kind mode, cause and break, and the quality of reduction blood; The deficiency of the third mode is: the one, and hands is pinched balloon and is pushed again and again, easily makes medicinal liquid or the blood failed inject vein with the surge form, can not at the uniform velocity inject; The 2nd, whole infusion process needs a people ceaselessly by pinching balloon, and labor intensity is big, accounts for people's effort.High-grade infusion set is to adopt microcomputer control, its cost height, and complex structure costs an arm and a leg, and is not suitable for China's national situation.

The purpose of this utility model just provides a kind of closed circuit infusion set of electric gas-filled pressurization, to save manpower, simplifies the operation, and reduces the ratio of performance to price.

This utility model is achieved in that with driven by motor one membrane pump, connects air filter by conduit, is communicated to airbag again, has conduit to be communicated with a three-way piece from the airbag air vent, one tunnel logical air gauge of threeway, and one the tunnel connects steam supply valve.The conduit of drawing from steam supply valve connects air tube, inserts infusion bottle, can implement to inflate pressurized operation.

Key point of the present utility model is, utilizes motor and pump to replace manual operational units such as balloon, check valve, realizes mechanized operation; And can realize that transfusion speed is even, adjustable by the air pressure in the control airbag.Before airbag, add an air filter, purified the air that charges into the liquid bottle, realized closed circuit transfusion, avoided generation, improved safety and wholesomeness because of complication situations such as liquid medicine contamination generation infusion reactions.

Below in conjunction with accompanying drawing this device is further described.

Fig. 1 is the structure principle chart of this device;

Fig. 2 is this device one case intravital outline drawing of packing into.

Among Fig. 1, motor 1 drives membrane pump 2, membrane pump can be selected the silicone rubber membrane pump in the CN87214423 patent for use, promptly a piston mechanism is connected on the crank off-centre, along with eccentric rotation, piston motion, gas is from the air inlet inspiration of pump and be deflated and mouthful discharge, air vent at pump 2 has conduit to be communicated with air filter 7, links the air inlet of airbag 8 then.The product that air filter can select for use Glass Instrument Factory, Changchun City to produce, dust and antibacterial 85%-90% that it can filter more than 2 microns are obviously purified the air that enters at last in the liquid bottle.The then optional level pressure airbag of using marine products of airbag promptly is lined with the version of poly-bag in a hard shell, it also has an automatic pressure reducing valve except that the inlet and outlet mouth, keep in the airbag force value within limits.By the governor motion on the air relief valve, can set or change the authorized pressure value in the airbag.The conduit of drawing from the airbag air vent connects a three-way piece 10, and two-way is divided in the back, and one the road leads to Pressure gauge 9, and with the pressure in the demonstration airbag directly perceived, the one tunnel connects steam supply valve 11, and the air supply opening connection air tube from steam supply valve is punctured in the infusion bottle 13 by air tube 12 again.From a road of infusion bottle output is the disposable transfusion device that generally uses at present, comprises dripping parts such as kettle 14, actuator 15 and syringe needle 16.

In order still to use this device under power-off condition or when giving first aid in the open air, between membrane pump 2 and air filter 7 and connect one road manual-operating mechanism.Promptly be provided with three-way piece 3, a road of threeway connects pump 2, one road blowing air filter 7, and Third Road is made of the branch road that balloon 6, manual inflation inlet 5 and check valve 4 serial connections are communicated with.

For ease of using, this device all is arranged in the casing, as shown in Figure 2, on the panel of casing 21, Pressure gauge 9 is arranged, the steam supply valve switch, and manual inflation inlets 5 etc. also are provided with switch pump and supply socket etc. in addition.Top has infusion bottle hook 18 to be connected on the elastic support 19 outside casing, and air supply opening 20 is arranged at the bottom.The infusion bottle reversal of the natural order of things on hook 18, is communicated with air supply opening 20 with a conduit, and the other end connects air tube 12, and air tube is pierced in the infusion bottle.Energized is opened switch pump, and beginning when airbag pressure reaches 0.04MPa, is turn-offed switch pump to the airbag inflation, opens the steam supply valve switch, can begin transfusion.And need not replenish source of the gas, can finish disposable transfusion task.This is normal infusion process.If need transfusion fast, must start membrane pump continuously, make airbag pressure remain on a steady state value always and get final product.If there is not power supply, balloon can be communicated on the manual air supply opening 5, carry out manual charge operation, in order to emergent usefulness.

For making this device more perfect, after finishing, transfusion can in time stop, preventing that gas with pressure from entering human body and meet accident, a cover transfusion alarm, brake structure also can be set in casing.This structure can adopt the form of CN86204991 patent, and promptly hook is connected on the spring support, and when the bottle herb liquid was totally lost soon, bottle heavily alleviated, bottle rises, and makes the contact contact, and circuit is connected, and sends sound and light alarm, and make the brake unit action, and clamp transfusion catheter, stop transfusion.Braking in the brake unit can be arranged on the middle part of casing 21, the below of elastic support 19 by folder 17.On the structure principle chart of Fig. 1, after folder 17 is dripping between kettle 14 and the actuator 15, promptly setting infusion bottle, the catheter clip that drips between kettle and the actuator is being ended on the folder 17.

This apparatus structure is small and exquisite, and easy to use, flexible, cost is low.After installing a complete set of configuration, can realize the automatic operation and the control of pressure transfusion, alleviate medical workers, and sound and light alarm and automatic cut-off function are arranged, remove patient and nursing staff's trouble and worry.In the infusion process, patient need not the prone position that keeps certain, has alleviated patient's misery.

Claims

1, a kind of automatic pressurizing infusion set has conduit to be communicated with airbag, it is characterized in that motor 1 drives membrane pump 2, connect air filter 7 by conduit, be communicated to airbag 8 again, have conduit to be communicated with a three-way piece 10 from the airbag air vent, one tunnel logical air gauge 9, a tunnel of threeway connects steam supply valve 11.

2, automatic pressurizing infusion set according to claim 1 is characterized in that above-mentioned parts all are arranged in the casing 21, and top has infusion bottle hook 18 to be connected on the elastic support 19 outside casing, and the air supply opening 20 of steam supply valve is arranged at the bottom.

3, automatic pressurizing infusion set according to claim 1 and 2 is characterized in that at the middle part of casing 21, and the below of elastic support 19 is provided with a braking by folder 17.

4, automatic pressurizing infusion set according to claim 1 is characterized in that going back and be connected to a route balloon 6, manual inflation inlet 5 and check valve 4 serial connections by three-way piece 3 before air filter 7 is communicated with the manual inflation branch road that forms.