CN2158720Y

CN2158720Y - Alarm for infusion

Info

Publication number: CN2158720Y
Application number: CN 93202461
Authority: CN
Inventors: 白云莲
Original assignee: TIANJIN MUNICIPLE GENERAL TEAM HOSPITAL PLA
Current assignee: TIANJIN MUNICIPLE GENERAL TEAM HOSPITAL PLA
Priority date: 1993-02-11
Filing date: 1993-02-11
Publication date: 1994-03-16
Anticipated expiration: 2003-02-11

Abstract

The utility model relates to an intravenous infusion device in medical application, which is an alarm for infusion and uses the liquid conductivity. The utility model is composed of an infusion needle head, an air inlet needle head of which the outside is coated with a segment of insulation material, two conducting wires and an alarm circuit, wherein, the two needle heads are used as two contacts for respectively connecting with the alarm device through the two conducting wires. The utility model has the advantages of simple structure, high alarm accuracy rate, low price and convenient operation. Proved by clinical trials, the utility model can lighten the labor intensity of nursing personnel and can reduce the companion time of patients' families. The utility model can be popularized and applied in hospitals.

Description

Alarm for infusion

This utility model relates to a kind of medical intravenous infusion set tool.

Before this utility model, about existing multinomial patent of automatic alarm for infusion and report document.As CN86204200 automatic closing and alarm infusion set; CN88215027.8 transfusion magnetic controlled choked flow electronic alarm; The CN90208936.6 drip stand etc. of reporting to the police automatically.The principle that they adopt has nothing in common with each other, as the principle that adopts load on spring weight to equate with spring tension; Adopt the gravitational principle of magnetic float valve; Adopt the principle of photoelectric sensing to wait the automatic warning that realizes infusing when finishing or stop transfusion automatically.

The purpose of this utility model is to utilize the electric conductivity of liquid, designs a kind of simple, practical, inexpensive infusion alarm, solves the nursing staff and be to check that the transfusion process comes and goes and run or family numbers of patients is the difficulty of transfusion patient company.

This utility model is following design: intravenous transfusion alarm by infusion needle, outside be surrounded by one section insulant the air inlet syringe needle and with above-mentioned two syringe needles as two contacts respectively by two leads link to each other with a warning circuit form.Utilize the electric conductivity of liquid, drop at liquid level under the state of not conducting of circuit between two syringe needles and send alarm signal, notify medical personnel in time to handle.

Design principle of the present utility model is simple, apparatus structure is also simple, warning accuracy rate height, material therefor and former device are inexpensive, easy for operation, prove through clinic trial, use this infusion alarm can alleviate nursing staff's labor intensity, reduce the company time of family numbers of patients, can be applicable in each hospital.

Below drawings and Examples are described further.

Fig. 1 is the structure diagram of infusion alarm.

Infusion alarm includes the air inlet syringe needle 2 that 1, one outside of an infusion needle is surrounded by one section insulant, and above-mentioned two syringe needles are connected with a warning circuit 3 by two leads respectively as two contacts.Infusion needle on the general direct use transfusion device of infusion needle.The air inlet syringe needle is special to be made, and uses general air inlet syringe needle, at its outside spray the preceding paragraph non-toxic polyethylene insulant, as when using 4.5 centimetres of air inlet syringe needles, can spray 3.5-4 centimetre insulating barrier, and tip portion is exposed.There is a section poor two syringe needle upper-lower positions during use.Warning circuit 3 is by a 30G2018 audion, resistance R ₁And R ₂, K switch ₁And K ₂, 8 ohm of dynamic speaker and 3V dc source be formed by connecting with lead.Two syringe needles are connected with foregoing circuit by two leads respectively as two contacts.When beginning transfusion, filled with fluid in the bottle, because liquid conduction, by two syringe needles, circuit communication, when along with transfusion process liquid level descends gradually, once liquid level is when reducing to the air inlet needle tip with upper/lower positions, circuit disconnects, and speaker sends alarm signal.Resistance R ₁Be 300 ohm, R ₂Be 5.6K, R ₁Resistance and K ₁When being used to carry the sodium class I liquid I, the switch connection uses; R ₂Resistance and K ₂Switch connects when being used to carry saccharide liquid and uses, and defeated different liquids changes that switch gets final product.

Claims

1, the infusion alarm used of a kind of intravenous transfusion, it is characterized in that, it includes an infusion needle 1, an outside is surrounded by the air inlet syringe needle 2 of one section insulant, above-mentioned two syringe needles as two contacts, is connected with a warning circuit 3 by two leads respectively.

According to the described infusion alarm of claim 1, it is characterized in that 2, the outside of said air inlet syringe needle 2 is sprayed with one section non-toxic polyethylene insulant.

According to the described infusion alarm of claim 1, it is characterized in that 3, said warning circuit 3 is by a 30G201B audion, resistance R ₁And R ₂, K switch ₁And K ₂, 8 ohm of dynamic speaker and 3V dc source be formed by connecting with lead.