CN2604189Y

CN2604189Y - Medical intravenous drip gravity infusion limiting automatic alarmer

Info

Publication number: CN2604189Y
Application number: CN 02283542
Authority: CN
Inventors: 李文杰; 李伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-12-17
Filing date: 2002-12-17
Publication date: 2004-02-25
Anticipated expiration: 2012-12-17

Abstract

The utility model is an electronic position limiting automatic alarm for intravenous drip gravity infusion for medical use. A couple of light emitting diodes and light dependent resistors are installed in a rectangular sampling probe base with a U-type infusion set drip pot clamping port. The leading pins of the light emitting diodes and the light dependent resistors are separately connected with a control circuit by conducting wires. Two round holes which are connected with the infusion set drip pot clamping port are arranged obliquely by a certain angle in the sampling probe base form the two side-ends to the central axis of symmetry direction separately and symmetrically. The light emitting diodes and the light dependent resistors are separately arranged in the two round holes. The infusion set drip pot clamping port on the sampling probe base can be stably clipped at the lower part of the infusion set drip pot. When the liquid-level in the infusion set drip pot reaches the particular reflection focus of the particular light channel in the sampling probe base, the light of the light emitting diode shines on the light dependent resistor by the reflection channel so that the crystal triode conducts and drives the buzzer to alarm automatically.

Description

The medical intravenous drip gravity spacing autoalarm of infusing

Technical field this utility model relates to a kind of electronics medical intravenous drip gravity spacing autoalarm of infusing, according to optics

Reflection is carried out specific light path design to the sampling probe pedestal, uses light emitting diode and photoconductive resistance to reach

The former device of universal electric, control transfusion automatic spacing is reported to the police.

Background technology people often will use the transfusion of intravenous drip gravity in the process of treatment disease, failing of long period

In the liquid process, people will watch the variation of liquid level position in the transfusion device frequently attentively, to prevent the defeated sky of liquid

Cause adverse consequences, people need the spacing automatic warning of energy when transfusion.

Summary of the invention is for the spacing automatic warning of energy when infusing, and this utility model provides a kind of electronics medical intravenous drip gravity defeated

Liquid limit position autoalarm, this device carries out specific light path design according to optical principle to the sampling probe pedestal,

According to the reflection of liquid surface, use photoelectron technology strong and weak variation of reflection ray converted to light

The variation of current intensity and voltage potential in the circuit by ending and on state characteristic of crystal triode, is controlled

The system buzzer is rung automatically.

The technical scheme that its technical problem that solves this utility model adopts is: have the U-shaped transfusion device at one and drip kettle

The folder mouthful the rectangularly-sampled probe base in, light emitting diode and photoresistor are installed, light emitting diode and

The leading foot of photoresistor electrically connects with lead and control circuit respectively, light emitting diode positive and negative

The utmost point is electrically connected with the positive and negative electrode of power supply respectively, and photoresistor and rheostat polyphone are connected on crystal three utmost points

Between pipe base stage and the positive source, the emitter stage of crystal triode is electrically connected with the base stage of back one-level crystal triode

Connect, buzzer is connected between the colelctor electrode and positive source of back one-level crystal triode.At the sampling probe base

In the seat, respectively symmetrically to the centrosymmetry direction of principal axis of probe base, oblique at a certain angle from the two side ends top

Drip the circular hole that kettle folder mouth is communicated with to being provided with two with transfusion device, light emitting diode and photoresistor are put respectively

Go in these two circular holes, the light head of light emitting diode and the photosensitive head of photoresistor are corresponding mutually to be installed,

Transfusion device on the sampling probe pedestal drips kettle folder mouth, can stably be clipped in the Lower Half that transfusion device drips kettle.

The beneficial effects of the utility model are: the spacing automatic warning when this device is used for the transfusion of intravenous drip gravity,

Make people in the infusion process of long period, needn't watch the change of liquid level position in the transfusion device frequently attentively

Change, when liquid level is reduced to certain position, the buzzer warning that can pipe automatically, reminds people is in time handled,

This device adopts common No. 5 batteries two joints (3V) as power supply, and structure is small and exquisite, and is easy to use.

Description of drawings further specifies this utility model below in conjunction with drawings and Examples.

Fig. 1 is the electrical schematic diagram of circuit part of the present utility model;

Fig. 2 is sampling probe embodiment combination of the present utility model (perspective) figure;

Fig. 3 is just (thoroughly) view of sampling probe pedestal;

Fig. 4 is side (thoroughly) view of Fig. 3;

Fig. 5 is the A-A cutaway view of Fig. 4;

Fig. 6 is that the D of Fig. 3 is to view.

Among Fig. 1: the D1. light emitting diode; R1. photoresistor; BG1. crystal triode (3DG6); BG2.

Crystal triode (3DK4); D2. crystal diode (2CP9); R2. rheostat; R3, R4, R5.

Resistor; RL. buzzer; DC. dc source 3V; K1. on and off switch; GND. publicly.

Among Fig. 2: 1. sampling probe pedestal, 2. transfusion device drips kettle folder mouthful, and 3. light emitting diode is installed locating hole,

4. incident ray duct, 5. locating hole is installed in photoconductive resistance, 6. reflection ray duct, 7. light emitting diode,

8. light emitting diode leading foot positive pole, 9. light emitting diode leading foot negative pole, 10. photoconductive resistance, 11. light

Quick resistance leading foot positive pole, 12. photoconductive resistance leading foot negative poles, 13. transfusion devices drip kettle and liquid, 14.

Liquid level in light reflector focus position, 15. light incident and reflection paths.

The specific embodiment in the embodiment of the electrical schematic diagram of Fig. 1 and Fig. 2, orthogonal sampling probe pedestal and control circuit board

Connect with four leads that have insulation sheath between two parts, in sampling probe pedestal (1), establish

Be equipped with light emitting diode locating hole (3) and photoconductive resistance installation locating hole (5), light emitting diode peace are installed

Dress locating hole (3) drips kettle folder mouthful (2) by incident ray duct (4) and transfusion device and is communicated with, and is photosensitive

Resistance installation locating hole (5) drips kettle folder mouthful (2) by reflection ray duct (6) and transfusion device and is communicated with, and sends out

Optical diode (7) is installed in light emitting diode and installs in the locating hole (3), and photoconductive resistance (10) is installed in

Photoconductive resistance is installed in the locating hole (5); Light emitting diode leading foot positive pole (8) is by having insulation sheath

Lead be connected light emitting diode leading foot negative pole (9) with power supply (DC) positive electrical on the control circuit board

Lead by having insulation sheath is connected with power supply (DC) negative electricity on the control circuit board, and is photosensitive

Resistance leading foot positive pole (11) by having insulation sheath lead and the rheostat on the control circuit board

(R2) a end is electrically connected, the lead of photoconductive resistance leading foot negative pole (12) by having insulation sheath with

One end of the base stage of the crystal triode on the control circuit board (BG1) and resistor (R3) is electrically connected; Brilliant

One end of the emitter stage of the base stage of body audion (BG2) and crystal triode (BG1) and resistor (R5)

Be electrically connected, the colelctor electrode of crystal triode (BG2) is connected crystal three with the negative electricity of buzzer (RL)

One end of the emitter stage of utmost point pipe (BG2) and resistance (R3) end and resistance (R5) and power supply (DC) are negative

The utmost point (public ground) is electrically connected; One end and the resistance of the positive pole of buzzer (RL) and rheostat (R2)

One end of device (R4) is connected with power supply (DC) positive electrical through on and off switch (K1).The sampling probe pedestal

(1) transfusion device drips kettle folder mouthful (2) and is clipped in the Lower Half that transfusion device drips kettle, turns on the power switch (K1),

By adjusting the resistance of rheostat (R2), make crystal triode (BG1) and crystal triode (BG2)

Be in cut-off state; When intravenous drip gravity transfusion was normally carried out, transfusion device dripped that liquid level makes whole maintenance in the kettle

In the position of dripping the kettle middle and upper part, the light that this moment, light emitting diode sent can not pass through reflection ray duct (6)

Shine on the photoresistor, buzzer is not worked; Behind the flow of liquid sky in the infusion bottle, transfusion device drips kettle

In liquid level will reduce gradually, drip liquid level in the kettle at transfusion device and arrive light channel in the sampling probe pedestal

Reflector focus position (14) time, the light that light emitting diode sends drips the anti-of liquid level in the kettle through transfusion device

Penetrate, shine on the photosensitive head of photoconductive resistance (10), photoconductive resistance (10) by reflection ray duct (6)

Resistance reduce, crystal triode changes conducting into by cut-off state, drives buzzer (RL) and reports to the police automatically.

Claims

A kind of electronics medical intravenous drip gravity spacing autoalarm of infusing, have in the rectangularly-sampled probe base that the U-shaped transfusion device drips kettle folder mouthful at one, a pair of light emitting diode and photoresistor are installed, the leading foot of light emitting diode and photoresistor electrically connects with lead and control circuit respectively, light emitting diode just, negative pole respectively with power supply just, negative electricity connects, photoresistor and rheostat polyphone are connected between crystal triode base stage and the positive source, the emitter stage of crystal triode is electrically connected with the base stage of back one-level crystal triode, buzzer is connected between the colelctor electrode and positive source of back one-level crystal triode, it is characterized in that: in the sampling probe pedestal, from two side ends top respectively symmetrically to the centrosymmetry direction of principal axis of probe base, obliquely at a certain angle be provided with two and drip the circular hole that kettle folder mouth is communicated with transfusion device, light emitting diode and photoresistor are inserted respectively in these two circular holes, the light head of light emitting diode and the photosensitive head of photoresistor are corresponding mutually to be installed, transfusion device on the sampling probe pedestal drips kettle folder mouth, can stably be clipped in the Lower Half that transfusion device drips kettle.