CN2217987Y

CN2217987Y - Automatic alarm for infusion

Info

Publication number: CN2217987Y
Application number: CN 95236445
Authority: CN
Inventors: 赵雪松
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-03-21
Filing date: 1995-03-21
Publication date: 1996-01-24
Anticipated expiration: 2005-03-21

Abstract

The utility model relates to an automatic alarm for infusion, which mainly solves the increased burden of nursing personnel and patients to observe the finish time of a physic liquor in the process of transfusion to ease labour intensity and raise curative effect, wherein, an alarm box body is arranged at the lower part of a transfusion bottle cover; a circuit board is arranged in the box body which is provided with an alarm circuit; a buzzer and a battery box are also arranged in the box body; an infrared ray transmitting tube D1 in the alarm circuit and a light-sensitive tube D2 and a light-sensitive tube D3 are arranged on the shaft cross section adjacent to the opening which is arranged on both lower sides of a bottle cover; D1 and D2 are arranged on the same horizontal surface; D1 forms an angle of 20 DEG to 30 DEG with the horizontal surface in a horizontal direction upward. The utility model can send out audible and visual alarm before the infusion is finished.

Description

The transfusion autoalarm that finishes

This utility model relates to a kind of medical alarm device, autoalarm shortly before particularly a kind of transfusion finishes.

Transfusion is the common method that hospital cures the disease to patient, and it is by vein medicine directly to be delivered to diseased region, has not to be subjected to that Digestive system influences,, effect advantage such as rapid non-stimulated to the liver sausage road.Its weak point is: after the infusion bottle inner liquid medicine was totally lost, air might work the mischief to patient by intravasation, can the causing death when serious.In addition, medicines such as the antibiotic that has, its aqueous solution instability should be used after making up a prescription immediately, in order to avoid drug effect descends, because the last group of medicinal liquid time of being totally lost is difficult to determine that it is standby to make up a prescription in advance, but place drug effect is descended during transfusion, affects the treatment.For fear of malpractice, nurse and families of patients then will often be maked an inspection tour or by patient's direct calling, increase burden to everyway like this.

The purpose of this utility model is to overcome the deficiency of above-mentioned prior art, and a kind of transfusion simple in structure, easy to use autoalarm that finishes is provided, and alleviates nursing staff and patient's burden, improves therapeutic effect.

The purpose of this utility model is achieved in that it includes Transfusion bottle cover, the below of bottle cover 1 is provided with an alarm box body, be provided with circuit board 2 in the box body, it is provided with warning circuit, also is provided with the buzzer 3 and the battery case 4 of warning circuit in the box body; [D1, photosensitive tube D2, D3 are arranged on bottle cover two downsides near on the shaft section of bottle mouth position to infrared emission tube in the warning circuit, and D1 and D2 are on same horizontal plane, and the D1 level is 20～30 ° with the angle that horizontal plane forms upwards.

Above-mentioned said warning circuit is made up of equal arm bridge, differential amplifier, voltage comparator, acousto-optic circuit; Equal arm bridge is made of photosensitive tube D2, D3 and resistance R 2, R3, with differential amplifier join thereafter, resistance R 4 one ends in the differential amplifier and photosensitive tube D3, capacitor C 1, the resistance R 3 in the electric bridge are joined, the integrated package negative terminal of other end connecting resistance R6 and amplifier, photosensitive tube D2, capacitor C 1 and resistance R 2 in the one termination electric bridge of resistance R 5, the integrated package anode of another termination amplifier and resistance R 7, the integrated package anode of amplifier chip outfan connecting resistance R6 and voltage comparator; The negative terminal of the integrated package of voltage comparator meets adjustable resistance R10 and divider resistance R8, R9, the output termination silicon controlled control end of comparator integrated package; The alarm lamp of the positive termination acousto-optic circuit of silicon controlled, display lamp sending and receiving acoustic-electric road, phonation circuit connects buzzer; The front end of equal arm bridge has an infrared emission tube D1 to be connected between resistance R 1 and the ground, and photosensitive tube D2, D3 in the other end of resistance R 1 and power positive end and the electric bridge join; Power positive end and photosensitive tube D2, D3, resistance R 8, R1, alarm lamp, phonation circuit joins; Infrared emission tube D1, resistance R 2, R3, R7, R9, controllable silicon, phonation circuit all join with ground.

Above-mentioned said infrared emission tube D1 level upwards is preferably 25 ° with the angle that horizontal plane forms.

Above-mentioned said two photosensitive tube D2, D3 that are arranged on bottle cover downside, the distance between the two is preferably 10mm.

The utlity model has more advantage.Its simple in structure, easy making, sensitivity is higher, and is easy to use, has the warning of sound and light simultaneously, and transfusion finishes the eve can in time report to the police, and reminds nursing staff and patient to get ready, and can improve curative effect.If the outfan of acousto-optic circuit is received on the master control platform of nurses' office, can remind the nurse to get ready more easily.

Below in conjunction with accompanying drawing this utility model is further described.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is alarm box body in this utility model and interior infrared emission tube D1 thereof, photosensitive tube D2, D3 and the sketch map that combines of infusion bottle.

Fig. 3 is the warning circuit schematic diagram in this utility model.

Fig. 4 is the reflection of incident light refraction sketch map of the medicinal liquid face in infusion bottle when very high.

Fig. 5 is the reflection of incident light refraction sketch map of the medicinal liquid in the infusion bottle when facing nearly B point (D3 position).

Fig. 6 is medicinal liquid face in the infusion bottle incident illumination reflected refraction sketch map between A, B point (D2, D3) time.

Fig. 7 is medicinal liquid face in the infusion bottle reflection of incident light refraction sketch map below A, 8 time.

Fig. 8 is that A, B point (D2, D3) optical power difference and the transfusion time in the alarm changes oscillogram.

Fig. 9 is the differential amplifier output waveform figure in the alarm.

Figure 10 is the controllable silicon current waveform figure in the alarm.

Structure shown in the accompanying drawing is exactly embodiment of the present utility model.Among the figure, 1 is Transfusion bottle cover.2 is circuit board.3 is buzzer.4 is battery case.

Ultimate principle of the present utility model is:

This utility model utilizes the total reflection principle of light, and the active optical signal is modulated, and receives with photosensitive circuit, and carries out anti-interference process.When reflection and refraction in the directive air time, can take place in light from clear solution, when angle of incidence of light during greater than the cirtical angle of total reflection, total reflection can take place, in the whole reflected back liquid of incident illumination, no refracted ray.In infusion bottle one side light source D1 (infrared emission tube) is set, makes its incident ray and horizontal direction that one low-angle upwards be arranged very.2 of the offside A of D1, B are provided with two light sensitive diode D2, D3 on Transfusion bottle cover, and distance between two points is advisable with 10 millimeters.2 light intensity difference of A, B are represented with Δ IAB: Δ IAB=IA-IB.

When liquid level is very high (Fig. 4), 2 of AB are subjected to illumination identical, i.e. Δ IAB=0; When liquid level during near the B point, the B point is subjected to partial reflection rayed (Fig. 5), Δ IAB＜0; When liquid level falls between A, the B point (Fig. 6), the B point is not owing to total reflection has rayed, and the A point is owing to catoptrical adding increases simultaneously, and Δ IAB＞0 is under liquid level is reduced to AB the time (Fig. 7), and AB is subjected to illumination close, Δ IAB ≈ 0.In fact IA, I8 will be subjected to the influence of surround lighting, but because 2 positions of A, B are approaching, surround lighting is basic identical to the effect of IA, IB, and is very faint to the influence of Δ IAB, can ignore under a situation.Δ IAB sees Fig. 8 with the sketch map that the liquid level time changes, and direct impulse is the signal that this device utilizes among the figure.

Circuit theory of the present utility model is seen Fig. 3.As the active light source, luminous intensity is determined by current-limiting resistance R1 with infrared emission tube D1.Light sensitive diode D2, D3 place D1 offside A, B position respectively, and D2, D3, R2, R3 form equal arm bridge, and circuit a, b point-to-point transmission join a capacitor C 1 with filtering interference signals.Differential amplifier amplifies the Vab of electric bridge output, and amplification is by R6 and the decision of R4 resistance, Vo=(R6/R4) Vab.

Clipped part by differential amplifier less than 0.Output voltage V o changes sketch map in time and sees Fig. 8.Vo connects the in-phase end of a voltage comparator, and reference voltage is provided by the potentiometer that R8, R9, R10 form.Adjustable resistance R10 is used to regulate reference voltage, the output termination silicon controlled control end of voltage comparator, and phonation circuit can adopt the doorbell musical film.

Light sensitive diode D2, D3 select for use homemade optically focused round end for well, and two pipe parameters are identical.Other element has no special requirements.Active light source (infrared emission tube D1) and the position of light sensitive diode (D2, D3) and the important step that is installed as this device of direction.Infrared tube D1, photosensitive tube D2, D3 place Transfusion bottle cover two downsides near on the shaft section of bottle mouth position.Infrared tube D1 and photosensitive tube D2 are on same horizontal plane, and infrared tube D1 level upwards forms smaller angle with horizontal plane, is 20～30 ° (25 ° of the bests), and two photosensitive tube D2, D3 are good at a distance of 10 millimeters.Whole element is installed on the circuit board of 2.5 * 4cm and is fixed on the Transfusion bottle cover.

This utility model can be used as the transfusion of reminding patient to use the separately autoalarm that finishes, and can also be connected with nurse therapeutic room master control platform, becomes sounding, luminous, the calling set of indicating bed label.Because use controllable silicon, alarm signal only just can stop under human intervention, so more safe and reliable.

Claims

1. transfusion autoalarm that finishes, include Transfusion bottle cover, it is characterized in that: the below of bottle cover (1) is provided with an alarm box body, is provided with circuit board (2) in the box body, it is provided with warning circuit, also is provided with the buzzer (3) and the battery case (4) of warning circuit in the box body; Infrared emission tube D1 in the warning circuit, photosensitive tube D2, D3 are arranged on bottle cover both sides near on the shaft section of bottle mouth position, and D1 and D2 are on same horizontal plane, and the D1 level is 20～30 ° with the angle that horizontal plane forms upwards.

2. the transfusion according to claim 1 autoalarm that finishes, it is characterized in that: above-mentioned said warning circuit is made up of equal arm bridge, differential amplifier, voltage comparator, acousto-optic circuit; Equal arm bridge is made of photosensitive tube D2, D3 and resistance R 2, R3, with differential amplifier join thereafter, resistance R 4 one ends in the differential amplifier and photosensitive tube D3, capacitor C 1, the resistance R 3 in the electric bridge are joined, the integrated package negative terminal of other end connecting resistance R6 and amplifier, photosensitive tube D2, capacitor C 1 and resistance R 2 in the one termination electric bridge of resistance R 5, the integrated package anode of another termination amplifier and resistance R 7, the integrated package anode of amplifier chip outfan connecting resistance R6 and voltage comparator; The negative terminal of the integrated package of voltage comparator meets adjustable resistance R10 and divider resistance R8, R9, the output termination silicon controlled control end of comparator integrated package; The alarm lamp of the positive termination acousto-optic circuit of silicon controlled, display lamp sending and receiving acoustic-electric road, phonation circuit connects buzzer; The front end of equal arm bridge has an infrared emission tube D1 to be connected between resistance R 1 and the ground, and photosensitive tube D2, D3 in the other end of resistance R 1 and power positive end and the electric bridge join; Power positive end and photosensitive tube D2, D3, resistance R 8, R1, alarm lamp, phonation circuit join; Infrared emission tube D1, resistance R 2, R3, R7, R9, controllable silicon, phonation circuit all join with ground.

3. the transfusion according to claim 1 autoalarm that finishes is characterized in that: above-mentioned said infrared emission tube D1 level upwards is preferably 25 ° with the angle that horizontal plane forms.

4. the transfusion according to claim 1 autoalarm that finishes is characterized in that: above-mentioned said two photosensitive tube D2, D3 that are arranged on bottle cover downside, the distance between the two is preferably 10mm.