CN101961253A - Automatic thermostatic electric heating tweezers - Google Patents

Abstract

The invention relates to automatic thermostatic electric heating tweezers, which consist of a thermostatic tweezers body, an operating tweezers handle, a PTC heating device, a heating power supply, a display circuit, a box, a quick joint, a quick joint seat and an insulating lead. The automatic thermostatic electric heating tweezers are characterized in that: the thermostatic tweezers body and the operating tweezers handle are connected to form a whole, the PTC heating device is fixed on the middle part of the tweezers, and the PTC heating device is connected with the heating power supply through a cable and the quick joint. The heating power supply, the display circuit and the quick joint seat are assembled in the box together. The electric heating tweezers synthesize the advantages of the novel PTC heating device, the electronic technology and the structure design of the thermostatic tweezers body and the operating tweezers handle. A constant temperature of about 60 DEG C is provided at the tweezers body part. Therefore, pathologic tissue components are not adhered on the tweezers, and the clinical diagnosis error is reduced. The operating tweezers handle has no hand burning feeling. The tweezers eliminate cross infection among the pathologic tissues, provide obvious reliable effect for qualification of a specimen, are simple and convenient to operate, have the advantages of reducing the working steps and improving the working efficiency, and are particularly suitable to be used in pathologic tissue paraffin embedding.

Description

Automatic constant-temperature electric heating tweezer

Technical field

What the present invention relates to is: in medical pathological tissue embedding process, a kind of pathological tissue constant temperature fold up professional electric heating forceps device in the embedding mould.

Background technology

In the organization embedding work of medical pathological examination, antimagnetic type tweezer with heating, pathological tissue is put rustless steel embedding mould bottom, is fixed on then in the paraffin that embedded box solidifies, again with paraffin fixedly the embedded box of pathological tissue from the embedding mould, separate.This method has obtained to use widely in clinical diagnosis.The common way of heating antimagnetic type tweezer: (1) adopts alcohol burner to heat common stainless steel tweezers head repeatedly.The problem that occurs is easily: when temperature is high, can cause the change of pathological cells tissue morphology, section diagnostic observation after being unfavorable for.And temperature can be stained with sticking pathological tissue composition when low on the tweezers, works as running hours, has increased the chance of cross-contamination between the specimen.Especially Pathologic specimen is endometrial tissue, face pathological tissue, liver when wearing cell outpatient service sampling such as tissue, has increased opportunities for contamination especially.(2) the heating work platform with embedding machine inserts the antimagnetic type tweezer head, and waiting temperature rises, and carries out embedding again.Though the second way has been eliminated the defective that temperature may be high, their common issue with is: the chance that cross-contamination is arranged between the specimen; The process of heating tweezers has increased the waiting time, has reduced work efficiency, has improved labor intensity.The time long time of tweezers heating in addition, the hand-held part since temperature transfer, hot problem is arranged.

Summary of the invention

For solving the deficiency in the above organization embedding, the invention provides a kind of automatic constant-temperature electric heating tweezer.This automatic constant-temperature electric heating tweezer when pathological tissue is folded up the embedding mould, provides about 60 ℃ steady temperature at retained part.This homothermic instrument, touch the surface with the preheating of wax liquid pathological tissue the time, because both have identical temperature, can on tweezers, not be stained with sticking pathological tissue composition, this has not only eliminated temperature when high, can cause the problem of pathological cells change in organization, and eliminate front and back by the cross-contamination between the pathological tissue specimen of embedding.Owing to need not the waiting time, improved work efficiency, reduced labor intensity.The tweezers split, solved hot problem in addition.Be the each several part explanation below:

1, heater element adopts the PTC critesistor.It is a kind of semiconductor resistor with positive temperature sensitivity, has the characteristic that resistance value is little under the room temperature, resistivity raises and increases with temperature.When applying certain electrical power at PTC type ceramic components two ends, at first PTC type ceramic components will be generated heat rapidly, increases because resistance raises with temperature, and its after current reduces, and enters temperature constant state.

2, select the special tweezers of manufacturing of rustless steel for use, be divided into two parts by function.The front is the constant temperature tweezer body that is fixed with ptc heater spare, clamping pathological tissue, and the back is the tweezer handle that the operator hands.Because the tweezer body of clamping pathological tissue has the temperature about 60 ℃, after the electric heating tweezer energising heating, this temperature will be delivered to operator's portion of the handle of back along the tweezer body.This temperature makes the operator scald one's hand in long-time and can't use.So in the design electric heating tweezer constant temperature working portion and hand-held part from, middle usefulness has the heat insulation fixture of certain intensity, special processing to connect as one.The overwhelming majority of tweezers front end heat is just intercepted like this, makes long-time operation not have obstacle.The electric heating tweezer is connected on the power pack by insulated conductor, snap joint.

3, heating controller is the power pack of electric heating tweezer, is made up of power supply and display circuit.Adopt the alternating voltage input power supply of high-performance, wide region.This power supply is selected high-performance, jumbo Switching Power Supply for use, and its advantage is that output voltage stabilization, conversion efficiency height, unfailing performance are strong.The DC voltage of the output of power-supply controller of electric is designed to and can regulates and control.Its temperature range shows with three kinds of colors of a LED luminous tube.Power-supply controller of electric and display circuit are installed in the machine box, and DC voltage is exported through the snap joint seat.

4, according to the scale of each hospital and the difference of workload, the output of power-supply controller of electric has two-way and single channel output pattern.The power-supply controller of electric of two-way output can heat two electric heating tweezers simultaneously, and can control break-make respectively with switch.The power-supply controller of electric of single channel output can only heat an electric heating tweezer.

The invention has the beneficial effects as follows:

1, can eliminate cross-contamination between the pathological tissue of embedding, for the character of correct diagnosis pathological tissue specimen provides guarantee.

2, controlling new electrically heating device and electronic technology easily, advantage combines.

3, the design that the working portion of electric heating tweezer and portion of the handle are separated has solved the problem of hand-held portion of hot hands.

4, in pathological tissue embedding working procedure, reduce operating procedure, improved work efficiency.

5. the scope of application is wide, can both adapted to the domestic and international embedding machine of any model.

6. heater element does not need special temperature controller, temperature sensor to carry out the Temperature Feedback control of generating heat, and its thermoregulation is the material behavior by self, thereby has the unexistent low cost of other heater.

7, heating is fast, heats up rapidly, and required electrical power is little behind the constant temperature, and there have thermostat temperature influenced by supply voltage to be minimum, the advantage that the life-span is long.

8, security performance is good.This heater body surface temperature is below 200 ℃, and body is all rubescent and protecting insulating layer is arranged in any case, thereby has eliminated potential safety hazards such as scald, fire.The dc low-voltage of power supply and the alternating current 220V of input are isolated, and do not have electrical shock hazard.

Description of drawings

The present invention is further described below in conjunction with accompanying drawing.

Fig. 1 is an electric heating tweezer structure chart.

Fig. 2 is heat insulation connecting plate part drawing.

Fig. 3 is heat insulation connector and electric heating tweezer installation diagram.

Fig. 4 is heating power supply controller principle figure.

Fig. 5 is that voltage is temperature displaying principle figure.

The specific embodiment

Automatic constant-temperature electric heating tweezer is made up of tweezer body, heat insulation adapter, operation tweezer handle, ptc heater spare, heating power supply, display circuit, machine box, snap joint, snap joint seat and insulated conductor.It is characterized in that: heat insulation adapter connects as one tweezer body, tweezer handle, and tweezer body middle part is provided with ptc heater spare, and ptc heater spare is electrically connected by cable, snap joint and heating power supply, display circuit.Heating power supply, display circuit are arranged in the machine box together with the snap joint seat.

1, among Fig. 1, electric heating tweezer structure chart is with a front view (1A) and a side view (1B) expression.In Figure 1A, the 1st, constant temperature work tweezer body, the 2nd, ptc heater spare, 3 and 4 is temperature isolation connectors.The 5th, operation tweezer handle.Among Figure 1B, the 1st, constant temperature work tweezer body, the 2nd, fixed screw holes, the 3rd, heat insulation gap, the 4th, operation tweezer handle.Tweezerbody 1 partial design has two bendings, mainly is the needs that ptc heater spare 2 takes up room, and the overall appearance of electric heating tweezer.Tweezerbody 1 is used for the clamping pathological tissue, andtweezer handle 5 is used for hand-held.Because of embedding machine is not a general equipment in enormous quantities.For in small-scale production, reducing cost, thus theheat insulation adapter 3 of front and back joint face, machining of machining electric heating tweezer and 4 mode selected, so that the interchangeability that obtains assembling in the large-scale production.By in the boring of the both sides oftweezer body 1 andtweezer handle 5, tapping, from theoutside tweezer body 1 andtweezer handle 5 are linked into an integrated entity with screw then.

2, among Fig. 2, be the heat insulation connector of electric heating tweezer.Fig. 2 A is that fixedly mainboard, Fig. 2 B are auxiliary pressing plates.Fixedly mainboard partly plays main stressed and interconnect function at constant temperature working portion and hand-held, so selection is thicker, auxiliary pressing plate selection is thinner, sticks on the inboard of tweezers with high-temp glue, and inside the lead-in wire of ptc heater spare is pressed in.

3, Fig. 3 is the heat insulation connector installation diagram of electric heating tweezer.Among the figure: the 1st, countersunk head screw, the 2nd, fixing mainboard, the 3rd, tweezer body, the 4th, auxiliary pressing plate.Countersunkhead screw 1 passes fixedly, andmainboard 2 connects as onetweezer body 3 andtweezer handle 3.

4, Fig. 4 is an electric heating tweezer power-supply controller of electric electrical schematic diagram.Among the figure: the 1st, on and off switch, the 2nd, power supply high frequency filter, the 3rd, industrial frequency rectifying filtering, the 4th, on-off circuit, the 5th, high frequency transformer, the 6th, filtering high-frequency rectifier output, the 7th, output error sampling, the 8th, pulse-width modulation circuit, the 9th, voltage-regulation.

Simple operation principle is: AC-input voltage is through on and offswitch 1 input, and the pulse interference on power supplyhigh frequency filter 2 both filtering electric power systems is isolated high frequency interference and electrical network that Switching Power Supply produces again.Industrialfrequency rectifying filtering 3 is converted to the 300V DC voltage with the alternating current 220V input voltage.On-offcircuit 4 is power section of power supply, is controlled by pulse-width modulation circuit 8.Voltage-regulation 9 anderror sampling 7 common control pulse-width modulation circuits 8.Under the effect of pulse-width control signal, on-offcircuit 4 output high-frequency electric powers.High-frequency electric power behind the filtering high-frequency rectifier 6, obtains stable VD throughhigh frequency transformer 5 blood pressure lowerings.In order to adapt to the homoiothermic needs of electric heating tweezer, voltage-regulation 9 is regulated and control continuously to output voltage within the specific limits.The temperature of voltage value and electric heating tweezer is directly proportional.Voltage Gao Shike entered duty fast in 2 minutes; Voltage can reach operating temperature when low gradually under spare condition.

5, Fig. 5 is the display circuit electrical schematic diagram.Among the figure: the 1st, Switching Power Supply output, the 2nd, regulated power supply, the 3rd, comparator reference, the 4th, comparator, the 5th, logic circuit, the 6th shows output.

Main operation principle is: Switching Power Supply is exported 1 one the tunnel and is delivered to regulatedpower supply 2, is produced high and low two reference voltages ofcomparator reference 3 by burning voltage; Another road is input tocomparator 4 as signal and two reference voltages are compared.The result ofcomparator 4 delivers to the logic circuit combination, promptly the excursion of switch power source output voltage is divided between three viewing areas.Is an interval with input voltage less than low reference voltage; Is second interval with input voltage greater than low reference voltage, less than high reference voltage; Is the 3rd interval with input voltage greater than high reference voltage.Because voltage and temperature are directly proportional, so also represented different temperature ranges between three viewing areas.In showingoutput 6, the temperature regime of electric heating tweezer shows with three kinds of colors of a multi-colored led light emitting diode.During adjustment control voltage-regulation turn-knob, the operating temperature of electric heating tweezer changes continuously, uses " blueness ", " green ", " redness " three kinds of color showings according to this.Its Smalt is represented low temperature, temperature in the green expression, red expression high temperature.

The present invention can form sophisticated device product, at the use in pathological tissue embedding working procedure, has certain Industry Promotion application prospect, social benefit and economic benefit.

Claims (6)

1. automatic constant-temperature electric heating tweezer, it is made up of tweezer body, operation tweezer handle, heat insulation adapter, ptc heater spare, heating power supply, display circuit, machine box, snap joint, snap joint seat and insulated conductor, it is characterized in that: heat insulation adapter and tweezer body, tweezer handle connect as one, tweezer body middle part is provided with ptc heater spare, ptc heater spare is electrically connected by cable, snap joint and heating power supply, display circuit, and heating power supply, display circuit are arranged in the machine box together with the snap joint seat.

2. automatic constant-temperature electric heating tweezer according to claim 1 is characterized in that: the tweezer body is connected by heat-barrier material with the tweezer handle.

3. automatic constant-temperature electric heating tweezer according to claim 1, it is characterized in that: the tweezer body is provided with the PTC electrothermal device temperature is provided.

4. automatic constant-temperature electric heating tweezer according to claim 1 is characterized in that: power-supply controller of electric and display circuit are installed in the machine box, and DC voltage is through the output of snap joint seat, and the electric heating tweezer is connected in the snap joint by insulated conductor.

5. automatic constant-temperature electric heating tweezer according to claim 1 is characterized in that: the output of power-supply controller of electric can two-way or single channel output, and the power-supply controller of electric of two-way output can heat two electric heating tweezers simultaneously, and available switch is controlled break-make respectively.

6. automatic constant-temperature electric heating tweezer according to claim 1 is characterized in that: the temperature regime of electric heating tweezer shows with three kinds of colors of a multi-colored led light emitting diode.During the adjustment control turn-knob, the operating temperature of electric heating tweezer changes continuously, uses " blueness ", " green ", " redness " three kinds of color showings according to this.Its Smalt is represented low temperature, temperature in the green expression, red expression high temperature.

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