Study On The Temperature Control Technology And Equipments Of Biomedical Patients And Samp Les

The temperature of the human body to maintain a constant normal state of lifein37℃, if long time hypothermia greatly increase the risk of cardiovasculardisease.For surgical patients, it may also cause infections, complications, anddelayed wound healing, increase the length of hospitalization. It is not uncommonthat surgical patients represent inadvertent hypothermia pre-operation, duringoperation and post-operation due to prolonged exposure to modern air-conditionedoperative room or ward.Hypothermia is common occurrence of negligence，if do nottake appropriate protective measures, and loss of body temperature is inevitable.Along with the social aging intensifies and elderly surgical patients reduce theability to regulate body temperature, body temperature control throughout theentire surgical procedure becomes more important. At the same time, a long timein biomedical samples maintained at low temperatures will be in the same infusioninto the human body caused by the patient body temperature drops, it is necessaryto pre infusion of temperature in order to make it suitable for the temperatureof the human body. Therefore, conducting the technology and equipment researchof temperature control about biomedical objects and samples to meet patients’needs especially surgical patients has positive meaning.In order to solve the problem of biomedical objects and sample temperaturecontrol, we study the temperature control technology and methods of biomedicalobjects with air as medium and related sample to achieve the target of temperaturemaintenance and control of the biomedical objects and the input samples, buildinga sound temperature control and maintain system, reducing or preventing the lossof the object’s temperature, decreasing the risk of complications and promotingrecovery.We researched and developed a system which can maintain body temperatureof biomedical objects and can control the temperature of biomedical sample solution.This system consists of host computer, pipeline and application components. The device consists of a host, transmission pipeline, and application components: thehost under the control of the single chip microcomputer system, adopt ceramicheating technology (PTC) heating the filtered purified air, based on the settemperature output the homothermal gas stream and transfer the gas stream by thetransport pipeline into application components, while achieving multipletemperature online monitoring and control. Application includes two parts, canbe used alone or simultaneously: one is he maintenance blanket covering thebiomedical objects (in whole or in part), which is capable of maintaining andmonitoring the surface temperature of the user;the other is the sample heatingchamber, the cavity for convection circling pipeline biomedical infusion of thesample solutions were heat regulation.This subject adopts the ceramic heating technology to heat, and uses thetemperature control mode to control the biomedical objects and flow liquid bloodsample temperature, which is safe effective and simple realization. We usethermistor strong anti-interference to long-distance monitor application part orlocal environmental temperature of heating chamber and use infrared temperaturemeasurement technology to monitor the temperature of flowing sample to achievethe temperature maintanence of biomedical objects and temperature control ofsolution sample: Temperature can be set up in~42℃range temperature can beset up in~42℃(room temperature below20℃the setting temperature is20~42℃); reaching the set output temperature no longer than3min; the temperaturemonitoring blanket which effect on body temperature control has four temperaturecheckpoints, a variety of specifications, single-use;Both the sample heatingcamber and the fluid sample output from it are provided with temperature monitoring,the liquid monitoring of the temperature range is5~50℃. Running test and analysisof the system developed shows that temperature control of the two applicationcomponent can be accurately, and the error with the set temperature value meetsthe design requirements:<±1.5℃, and when the temperature sensor interface ofshort circuit or open circuit, the temperature reached45℃±2℃，the system canstart automatically alarm and protection measures. This paper research on the temperature of biomedical objects and biomedicalsamples control technology and equipment, which in response to the needs ofclinical nursing and protective development, and provides a new technology, newmethods and new equipment for the clinical to avoid patient lost temperature. Thesewill have clinical effects of positive and good application value and prospect.