CN2122642U - Multi-functional electronic thermostatic transfusion system - Google Patents

Abstract

The utility model relates to a multi-functional electronic thermostatic transfusion system, which belongs to the medical appliance articles. The utility model is composed of a transfusion tube, a liquid storing bottle, a transfusion stand, an electric heater, a controller, etc. The utility model is characterized in that a sensing device of approaching to drip over is arranged in the place of the liquid storing bottle. A temperature sensor is arranged at the side of the electric heater, and the sensing device of the drip speed is arranged in the place of the burette. The controller is provided with a thermostatic control circuit, the display circuit of the temperature and the drip speed, and the alarm circuit of the super high and low temperature and approaching to drip over. The display of the temperature and the drip speed and the thermostatic control, the overtemperature and the acoustic and light alarm of approaching to drip over are realized through the processes of the photoelectric conversion, the signal amplification, the flow examining amplifying, etc.

Description

Multi-functional electronic thermostatic transfusion system

This utility model relates to a kind of transfusion medical apparatus and instruments.

Present widely used transfusion device heats for institute's transfusion, enters the often pathogenic people part of cryogenic liquid, the general malaise of human body, even shivers.In recent years, the Chinese patent communique disclosed several electric heating transfusion devices, and most of function ratio are more single, and no overtemperature alarm, approaching warning, temperature and the speed of dripping off show that tube for transfusion does not have safety such as air storage, aerofluxus.

It is more convenient that the purpose of this utility model provides a kind of operation, has near dripping off function such as automatic warning, safe and reliable automatic temperature-control transfusion device, guarantees comfortable, the safety of patient infusion.

Major technique content of the present utility model is: be provided with one in the place of laying reservoir near dripping off sensing device.Be connected with a bit of stainless steel tube on the tube for transfusion of dropper bottom, its outer surface accompanies an electric heater and temperature sensor.At the middle part of drip stand one controller is arranged, thermoregulation in the controller and negative-feedback circuit and controllable silicon phased circuit make electric heater reach constant temperature and require: by temperature, drip fast display circuit (device), overtemperature and warning circuit etc. carries out that opto-electronic conversion, signal are amplified near dripping off, the electric bridge inspection is banished greatly, realize temperature, drip fast demonstration and overtemperature, near drip off, the light warning.

Superiority of the present utility model is: multiple functional, and automatization's height, easy to use, safe and reliable, for patient's transfusion brings comfort,, increase work efficiency for the medical worker alleviates workload.

Accompanying drawing provides an embodiment of the present utility model.

Fig. 1, multifunction constant temperature transfusion device sketch map;

Fig. 2, near dripping off sensing device component diagram (a, main looking are partly cutd open figure, c, vertical view, b, the right side are looked and partly cutd open figure, the cross-sectional figure of d, A-A);

Fig. 3, electric heater sketch map (a, outline drawing, b, left view);

Fig. 4, a fast sensing device component diagram;

Fig. 5, critical piece and circuit relationships figure;

Fig. 6, mains transformer wiring diagram;

Fig. 7, temperature, a fast display circuit figure;

Fig. 8, constant temperature control circuit figure;

Fig. 9, superelevation (low) temperature, the approaching warning circuit figure that drips off.

Below in conjunction with accompanying drawing this product is described further:

As can be seen from Figure 1, drip stand ［ 7 ］ main body is two sections hollow chrome-plated iron tubes that diameter is different, and epimere inserts in the hypomere, and is fixing with fastening spiral ［ 38 ］.There is cross hook ［ 1 ］ the drip stand upper end, but Hook inserts horizontal direction rotation in the drip stand hollow pipe, and fixing with fastening spiral ［ 38 ］, there are base ［ 23 ］ and castor ［ 24 ］ in the drip stand lower end, base one side is equipped with transformator ［ 39 ］, and attaching plug ［ 25 ］ connects transformator.The drip stand middle part is provided with a controller ［ 14 ］.Reservoir ［ 2 ］ is placed in the approaching of drip stand top and drips off in the sensing device ［ 3 ］, reservoir connects colloid tube for transfusion ［ 15 ］, there is exhaustor ［ 4 ］ the tube for transfusion upper end, there is a dropper ［ 13 ］ at the middle part, the bottom is connected to a bit of stainless steel tube ［ 22 ］, the stainless steel tube exit connects the colloid tube for transfusion, and its end connects syringe needle ［ 21 ］.Accompany an electric heater ［ 16 ］ and temperature sensor ［ 19 ］ in the stainless steel tube outside, both link to each other with controller ［ 14 ］ by lead ［ 8 ］.

Electric heater ［ 16 ］ (see figure 3) is that a bakelite that spring ［ 18 ］ is housed presss from both sides, and two 110V, 20W electric soldering iron core are arranged in the folder, and the electric soldering iron core is inserted in the aluminum matter heat pipe ［ 17 ］.

Temperature sensor ［ 19 ］ is an alligator clamp, and 3 negative resistance critesistor ［ 41 ］ are housed in the folder, and the tail end of 3 resistance welds together and is circular-arc, matches with the stainless steel tube appearance.The voltage of temperature sensor is 6V.

Near dripping off sensing device ［ 3 ］ profile is a reservoir cover (see figure 2), and its handle has a circle hole sleeve on drip stand ［ 7 ］ top, and is fixing with fastening spiral ［ 38 ］.Bottle cover lower side has exciter installing hole ［ 5 ' ］, photocell installing hole ［ 6 ' ］, and exciter ［ 43 ］, photocell ［ 37 ］, reservoir three position horizontal direction are isosceles triangle.This device is by linking to each other near dripping off the warning circuit (see figure 9) in lead and the controller, and the reservoir that dropping liquid is housed is a convex lens seemingly, and the light of focusing can not be mapped on the photocell; When storage liquid when dripping off, reservoir no longer produces light focusing, light is mapped on the photocell, opto-electronic conversion produces current signal, through amplifying output, display lamp is shinny, the audio oscillator sounding alarm.

Be provided with fast sensing device ［ a 11 ］ (see figure 4) on the right side of controller, there is an alligator clamp ［ 40 ］ this device side, there is the circular hole of upper and lower perforation at the middle part, lateral opening, dropper ［ 13 ］ can snap in the circular hole, have and vertical exciter installing hole of center hole direction ［ 5 ］ and photocell installing hole ［ 6 ］ in device both sides, top, this two hole is connected; Exciter ［ 43 ］, photocell ［ 12 ］, dropper drip to chew and are positioned on the line.Drip fast sensing device and be connected (see figure 7) with a fast display circuit in the controller ［ 14 ］ by lead, during following of liquid, form a transparent globule, the light that the optically focused effect produces is mapped on the photocell ［ 12 ］, produce a pulse signal, through amplification, amplitude limit, integration, utilize characteristic curve resistance adjustment district, the resistance bridge disequilibrium, the signal of output amplifies through 1/2M324N, by permutator, make ammeter have electric current to pass through, pointer shows.

Controller has 6 loops (seeing Fig. 7, Fig. 8, Fig. 9), is respectively that thermostatic control loop, temperature show, drip fast show circuit, superhigh temperature, ultralow temperature, the approaching alarm circuit that drips off.Controller panel is provided with: first row has temperature, drips fast display list ［ 9 ］, permutator ［ 10 ］, on and off switch ［ 36 ］; Second row has the indication of drip light ［ 32 ］, acoustic alarm ［ 33 ］, power supply light indication ［ 34 ］; The 3rd row has 3 light indications, is respectively near dripping off light ［ 29 ］, low-temperature warning ［ 30 ］, high temperature alarm light ［ 31 ］; The 4th row is provided with 3 buttons, is respectively near dripping light warning button ［ 26 ］, low-temperature warning ［ 27 ］ high temperature alarm ［ 28 ］.The controller left side has one to press key switch ［ 35 ］, and heater ［ 16 ］ hangs over presses on the key switch, can cut off the electricity supply.

Reservoir bag ［ 20 ］ is positioned between syringe needle ［ 21 ］ and the stainless steel tube, and reservoir bag such as sphere have one and the vertical steam vent of liquid stream direction at an upper portion thereof, and the micro bubble that medicinal liquid heating back produces can be stored, and also can emit by steam vent.

Isolating transformer ［ 39 ］ is 40VA, and for controller ［ 14 ］, heater ［ 16 ］ provide the independent current source of 5 kinds of different voltages, wherein the 110V electricity is for the controllable silicon phased circuit, and phased circuit connects electric heater ［ 16 ］ reheat stainless steel tube; Three critesistor are respectively drawn a lead in the temperature sensor ［ 19 ］, constitute three loops with temperature superelevation, ultralow warning circuit, temperature-control circuit respectively.Thermostatic control loop (see figure 8) is mainly formed a bleeder circuit by critesistor ［ 41 ］ and resistance ［ 44 ］, current potential in a variation of C point output, the control audion, audion is being controlled the relaxation oscillator of transformator and double base diode composition, the angle of flow of transformator voltage pulse output control bidirectional triode thyristor, realize thermostatic control, guarantee that the medicinal liquid of input human body is stabilized in 30 ℃ ± 1 ℃.

Temperature show circuit (see figure 7) is formed a balancing resistance bridge by 4 resistance such as critesistor, when critesistor changes, signal output is arranged at E, F two ends, this signal amplifies through computing integrated package 1/2LM324N, ammeter ［ 42 ］ just has electric current to pass through, and the temperature on size of current and the critesistor is inversely proportional to.

Overtemperature alarm circuit (Fig. 9), when critesistor ［ 41 ］ high temperature, the full conducting of following audion causes intermediary audion conducting, luminous indication ［ 30 ］ Qi Liang, audio oscillator sends the sound; When critesistor low temperature, resistance increases, and following audion becomes and ends, the audion conducting of going up most, and luminous indication ［ 31 ］ is shinny, the audio oscillator sounding alarm.

This utility model product important technological parameters is as follows:

1, power supply :～200V ± 10%, 50Hz;

2, consumed power: 3～12W;

3, drip speed (droplet/minute): 30-120;

4, transfusion temperature: 30 ° ± 1 ℃;

5, high temperature alarm: 35 ° ± 1 ℃;

6, low-temperature warning: 20 ° ± 1 ℃;

7, near dripping off warning (raffinate): 15 ± 5ml;

8, temperature display precision error: 3%;

9, drip fast display precision error: 5%.

Whether application notice: temperature sensor is done the test of reporting to the police respectively apart from electric heater 5-10mm before the transfusion, sensitive reliable with detection alarm; Transfusion finishes electric heater to be hung over and presses on the key switch ［ 35 ］, and the source of outage at this moment is in order to avoid burn out heater; The disposable use of tube for transfusion ［ 15 ］.

Claims (8)

1, a kind of multifunction electronic constant temperature transfusion system, the electric heater [16] that comprises drip stand [7], cross hook [1], reservoir [2], tube for transfusion [15], dropper [13], syringe needle [21], tube for transfusion bottom, of the present utility model being characterised in that: be provided with one near dripping off sensing device [3] at the reservoir place, be connected with a stainless steel tube [22] on the tube for transfusion [15] of dropper bottom, the stainless steel tube appearance accompanies electric heater [16] and temperature sensor [19]; At the middle part of drip stand [7] controller [14] is arranged, controller by lead [8] respectively with electric heater, temperature sensor, pluck and closely drip off sensing device and link to each other.

2, transfusion device as claimed in claim 1 is characterized in that: electric heater ［ 16 ］ is the bakelite folder of a band spring ［ 18 ］, and the heating in the folder is 2 110V, 20W electric soldering iron core, and the electric soldering iron core inserts in the aluminum matter heat pipe ［ 17 ］.

3, transfusion device as claimed in claim 1 is characterized in that: temperature sensor ［ 19 ］ is equipped with 3 critesistor ［ 41 ］ as an alligator clamp in the folder, and the tail end of 3 resistance welds together and is circular-arc, matches with stainless steel tube ［ 22 ］ appearance.

4, transfusion device as claimed in claim 1, it is characterized in that: near dripping off sensing device ［ 3 ］ profile is a reservoir cover, bottle cover lower side has exciter installing hole ［ 5 ' ］, photocell installing hole ［ 6 ' ］, exciter, photocell ［ 37 ］ and reservoir ［ 2 ］ three are isosceles triangle, the signal that opto-electronic conversion produces amplifies back generation sound, light warning.

5, transfusion device as claimed in claim 1, it is characterized in that: the side at controller ［ 14 ］ is provided with a fast sensing device ［ 11 ］, this device has the circular hole of a upper and lower perforation, lateral opening, dropper ［ 13 ］ snaps in the circular hole, have exciter installing hole ［ 5 ］ and the photocell installing hole ［ 6 ］ that is communicated with on device top with the center hole vertical direction, exciter ［ 43 ］, photocell ［ 12 ］ drip to chew with dropper and are positioned on the line; The signal that opto-electronic conversion produces is banished greatly through amplification, integration, inspection, is shown by pointer by permutator ［ 10 ］ back.

6, as claim 1 or 2 or 3 or 4 or 5 described transfusion devices, it is characterized in that: temperature be housed on the panel of controller ［ 14 ］, drip fast display list ［ 9 ］, permutator ［ 10 ］, near dripping off warning button ［ 27 ］, light indication ［ 30 ］, high temperature alarm button ［ 28 ］, light indication ［ 31 ］ also have drip indication ［ 32 ］, acoustic alarm ［ 33 ］ and press key switch ［ 35 ］, on and off switch ［ 36 ］.

7, transfusion device as claimed in claim 1 is characterized in that: be provided with a reservoir bag ［ 20 ］ between tube for transfusion syringe needle ［ 21 ］ and the stainless steel tube ［ 22 ］, reservoir bag such as sphere have one and the vertical steam vent of liquid stream direction at an upper portion thereof.

8, as claim 1 or 2 or described transfusion device, it is characterized in that: isolating transformer ［ 39 ］ provides the independent current source of 5 kinds of different voltages for controller ［ 14 ］, heater ［ 16 ］, wherein the 110V electricity is for the controllable silicon phased circuit, and phased circuit links to each other with electric heater; 3 critesistor ［ 41 ］ are respectively drawn a lead in the temperature sensor ［ 19 ］, constitute three loops with negative feedback constant temperature control circuit, temperature display circuit, temperature superelevation, ultralow warning circuit respectively; Variations in temperature signal after the electric bridge inspection is banished is greatly shown by display list ［ 9 ］ pointer by permutator.

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