CN202397643U - Temperature control air heating tube for medical scientific research - Google Patents

Abstract

The utility model discloses a temperature control air heating tube for medical scientific research, which is composed of a ceramic tube, a nickel-chromium electric heating wire, glass fiber high-temperature resistant adhesive tape, a teflon heat insulation diaphragm, a digital temperature controller, a manual power switch and a power supply. The nickel-chromium electric heating wire is evenly distributed and wound on the outer surface of the ceramic tube, the glass fiber high-temperature resistant adhesive tape is wound on an outer layer of the electric heating wire, and the teflon heat insulation diaphragm is coated on the outer surface of a high-temperature resistant adhesive tape layer. One end of the electric heating wire is communicated with the negative pole of the power supply, the other end of the electric heating wire is communicated with the digital temperature controller and then communicated with the positive pole of the power supply through the manual power switch to form a voltage return circuit of the electric heating wire, and the digital temperature controller is provided with a flexible connection temperature probe so as to form the temperature control air heating tube for the medical scientific research. When the temperature control air heating tube for the medical scientific research is used in an experiment, experimental animals can perform active breathing completely, conditional variable of the experiment is reduced, and side damage on the experimental animals is reduced. The temperature control air heating tube for the medical scientific research is simple in structure, accurate in temperature control, small in volume and convenient to use.

Description

A kind of medical research is used the temperature controlled air heating tube

Affiliated technical field

This utility model relates to the technical field of medical laboratory's research equipment, particularly relates to a kind of medical research and uses the temperature controlled air heating tube.

Background technology

As everyone knows, in the practice in burn medical research field, inhalation injury is modal respiratory tract injury, and inhalation injury is meant the respiratory tract injury that suction hot-air and/or smog cause.Wherein hot-air is divided into two types of heated dry air and damp-heat airs.The scientific research of the inhalation injury that at present damp-heat air and smog is caused is more thorough, and causes the research of inhalation injury less relatively to heated dry air, does not also have sophisticated scientific research method and research equipment.Present medical research personnel cause in the zoopery of inhalation injury at the research heated dry air, generally all are to adopt the hair-dryer of scalable temperature to make an experiment as air heating apparatus.The hair-dryer device can be realized the heating to air; Also realize temperature control easily; But existing problems are, the hot blast that hair-dryer blows out causes that the passive breathing of laboratory animal, hot-air flow velocity are too high, the shortcoming of the injury of lung that causes the lung internal gas pressure to raise causing laboratory animal easily.Therefore; Be necessary to develop the alternative hair-dryer of temperature controlled air heating tube laboratory animal is carried out scientific experimentation; The temperature controlled air heating tube can make experimental animal initiatively breathe, and overcomes the phenomenon that injury of lung appears in experimental animal, and this also is the current actual task that faces in present technique field.

Summary of the invention

The goal of the invention of this utility model is to provide a kind of medical research simple in structure, that temperature control is accurate, volume is little and easy to use to use the temperature controlled air heating tube.

In order to achieve the above object; This utility model adopts the politef adiabatic diaphragm art scheme of following structure: a kind of medical research is used the temperature controlled air heating tube; Form by earthenware, nichrome wire, fibre glass high-temperature plastic cloth, politef adiabatic diaphragm, digital temperature control appearance, manual power switch and power supply; Be characterized in: the outer surface of earthenware evenly twines nichrome wire abreast; The outer fibre glass high-temperature plastic cloth that twines of heating wire constitutes insulating barrier, fibre glass high-temperature plastic layer of cloth outer surface parcel politef adiabatic diaphragm; Constitute heat-resistant layer; Heating wire one end is communicated with power cathode, and the heating wire other end is communicated with positive source through manual power switch after being communicated with digital temperature controller, forms the voltage circuit of heating wire, has the temperature probe that is flexible coupling on the digital temperature control appearance, thereby constitutes the temperature controlled air heating tube.

Above-mentioned said power supply is the mains lighting supply of normal domestic 220v.

Above-mentioned said earthenware diameter 3.5-5cm, thickness of pipe wall is 0.3-0.8cm, pipe range is 25-30cm.

The power of above-mentioned said heating wire is 220v/300w, is 40 ℃-400 ℃ to the heated perimeter of air, and fiducial temperature is set at respectively: 70 ℃, 150 ℃ or 320 ℃.

The operation principle of this utility model is: beginning heating ceramic pipe behind heating wire connection circuit on the air heating pipe; Ventilating air in the earthenware is heated thereupon, and wherein the temperature probe of digital temperature control appearance is set with a fiducial temperature; When the temperature probe temperature detected reaches this fiducial temperature; The internal switch automatic disconnection of temperature controller is cut off entire circuit, stops heating; When the temperature probe temperature detected was lower than this fiducial temperature, the internal switch of temperature controller was dynamically connected certainly, circuit communication, and heating restarts.

When carrying out zoopery, dorsal position behind the laboratory animal anesthesia is fixed, with tongue forceps the animal tongue is pulled out outside the mouth, prevent the glossoptosis obstructing airway, two rubber stoppers stop up its nostril, force the autonomous respiration of laboratory animal per os.Open the last lower jaw of laboratory animal; One end of temperature control tube is inserted in the experimental animal mouth, make this mouth of pipe behind epiglottis 10cm place, oral cavity, lower jaw on the closure; Temperature control tube is placed to be gone up between the lower jaw in the laboratory animal mouth; And with casting harness the lower jaw periphery is around, tight binding on laboratory animal, fixedly temperature control tube is in the laboratory animal mouth; The temperature controller temperature probe is inserted the laboratory animal oral cavity by a side bicker, make temperature probe far-end (effectively temperature-sensitive position) place the oral cavity central authorities of the epiglottis 5cm apart from the oral cavity, do not touch oral cavity tissue, temperature probe near-end and animal bicker are fixed.Attaching plug is inserted circuit common, and closed manual power switch, heating wire begin the heating ceramic pipe, and the inner air themperature of earthenware rises, and the air themperature that laboratory animal sucks in the larynx also rises, and the temperature probe temperature on the event temperature controller also rises simultaneously.When the temperature of air rises to the fiducial temperature of setting in laboratory animal sucks larynx, the automatic disconnection of temperature controller internal switch, circuit cuts off the power supply automatically, and heating stops; The temperature of air drops to fiducial temperature when following in laboratory animal sucks larynx, temperature controller internal switch auto-closing, and circuit is from being dynamically connected, and heating wire can continue heating.In practical operation, because the self-heating effect of heating wire can continue heating a period of time (about 10s) after the down circuitry, cause air themperature to continue rising (less than 5 ℃), so the span of control of animal intake air temperature is fiducial temperature ± 5 ℃.Between temperature zone, be 40 ℃-400 ℃, can satisfy and set up the requirement that heated dry air causes three kinds of special models in the inhalation injury model the heated perimeter of air according to the power of heating wire and temperature controller probe.Fiducial temperature is set at respectively: 70 ℃ on congested pattern type, 320 ℃ on 150 ℃ on edema type model and obstruction type model; The heated dry air respiratory time is 20 minutes.

Owing to adopted the principle of above-mentioned heating ceramic inner air tube, make that this utility model is simple in structure, temperature control is accurate, volume is little and easy to use, its beneficial effect is: to the air of target location accurately in heating and the temperature control; Not to the additional initial velocity of air, during experiment, laboratory animal is carried out active fully and is breathed; The factor of unique change is exactly an air themperature; Can reduce the experimental conditions variable, reduce the pair damage of laboratory animal, reach goal of the invention.

Description of drawings:

Fig. 1 is this utility model structural principle sketch map

The specific embodiment:

Below in conjunction with detailed description of the drawings this utility model, from Fig. 1, can find out the structural principle of this utility model, a kind of medical research is used the temperature controlled air heating tube; Be made up of earthenware 2, nichrome wire 1, fibre glass high-temperature plastic cloth 3, politef adiabatic diaphragm 4, digital temperature control appearance 7, manual power switch 6 and power supply 5, earthenware 2 diameters are 3.5cm, and thickness of pipe wall is 0.5cm; Pipe range is 28cm; The outer surface of earthenware 2 evenly twines nichrome wire 1 abreast, and the heating wire 1 outer fibre glass high-temperature plastic cloth 3 that twines constitutes insulating barrier; Fibre glass high-temperature plastic cloth 3 outer surfaces parcel politef adiabatic diaphragm 4 constitutes heat-resistant layer; Heating wire 1 one ends are communicated with the negative pole of the mains lighting supply 5 of normal domestic 220v; Heating wire 1 other end is communicated with digital temperature controller 7 backs are communicated with mains lighting supply 5 power supplys of 220v through manual power switch 6 positive pole; Form the voltage circuit of heating wire 1; The power of heating wire 1 is 220v/300w, is 40 ℃-400 ℃ to the heated perimeter of air; Have the temperature probe 8 that is flexible coupling on the digital temperature control appearance 7, the fiducial temperature of temperature probe 8 is set at respectively: 70 ℃, 150 ℃ or 320 ℃.

Claims (4)

1. a medical research is used the temperature controlled air heating tube; Form by earthenware (2), nichrome wire (1), fibre glass high-temperature plastic cloth (3), politef adiabatic diaphragm (4), digital temperature control appearance (7), manual power switch (6) and power supply (5); It is characterized in that: the outer surface of earthenware (2) evenly twines nichrome wire (1) abreast; The outer fibre glass high-temperature plastic cloth (3) that twines of nichrome wire (1); Constitute insulating barrier, fibre glass high-temperature plastic cloth (3) outer surface parcel politef adiabatic diaphragm (4); Constitute heat-resistant layer; Nichrome wire (1) one end is communicated with power supply (5) negative pole; Nichrome wire (1) other end is communicated with digital temperature controller (7) back and is communicated with power supply (5) positive pole through manual power switch (6); Form the voltage circuit of heating wire; Have the temperature probe (8) that is flexible coupling on the digital temperature control appearance (7), thereby constitute the temperature controlled air heating tube.

2. the temperature controlled air heating tube is used in scientific research according to claim 1, it is characterized in that: said earthenware (2) diameter 3.5-5cm, and thickness of pipe wall is 0.3-0.8cm, pipe range is 25-30cm.

3. the temperature controlled air heating tube is used in scientific research according to claim 1, it is characterized in that: the power of said nichrome wire (1) is 220v/300w, is 40 ℃-400 ℃ to the heated perimeter of air.

4. the temperature controlled air heating tube is used in scientific research according to claim 1, it is characterized in that: said power supply (5) is the mains lighting supply of normal domestic 220v.