Type MA Biomedical Chip NTC Thermistors Thermometrics Biomedical Chip Thermistor Assemblies are designed for use in applications involving both intermittent and continuous patient temperature monitoring. Repeatability and fast response are essential, not only for the intermittent temperature requirements associated with oral and rectal fever measurements, but also for the continuous monitoring often necessary during induced-hypothermia and general anesthesia, or when employed in the care of infants and premature babies. Intensive care units, along with recovery rooms, have also adopted patient temperature as part of their vital sign monitoring procedures. Temperature monitoring for skin surface, tympanic, esophageal, foley catheters, and biofeedback applications has also improved due to the high stability and tight interchangeable tolerances designed into each Thermometrics Biomedical Sensor Assembly. Within our Type MA line of NTC Thermistors, we offer a complete line of standard sub-assemblies. Continuous research and development efforts within Thermometrics have resulted not only in these field- proven designs, but in the development of our Unitherm Thermochip Thermistor, designed exclusively for biomedical applications in the range of 32F to 122F (0C to 50C). Although low in cost, these highly stable, precision thermochips provide the reliability, tight interchangeable tolerances, geometries, and fast response times that are often required in medical applications. Thermometrics employs experienced applications engineers who welcome inquiries, whether for assistance, or to help with your design requirements concerning new and existing applications. Applications Intermittent Patient Temperature Monitoring - For oral and rectal fever measurements Continuous Patient Temperature Monitoring - During general anesthesia, induced hypothermia, and premature infant care Vital Sign Monitoring - For Intensive Care Units (ICU) and recovery rooms Temperature Monitoring - For skin surface, tympanic, esophageal, foley catheters, and biofeedback Amphenol Advanced SensorsType MA Specifications MA100 MA300 Designed for use in catheter assemblies, these sen- Routine continuous patient temperature monitoring sors are available with nominal resistance values of is now feasible by using the convenience of 2252, 3000, 5000, and 10,000 at 77F (25C). the patients skin site as an indicator of body temperature. The stainless steel housing used Close monitoring of manufacturing processes allow is suitable for both reusable and disposable Thermometrics to maintain tight interchangeability applications, while maintaining maximum patient tolerances with volume production. comfort. Nominal resistance values of 2252, 3000, Typical design parameters are represented in 5000, and 10,000 at 77F (25C) are available. Assembly Type table. Refer to Assembly Type table for typical design 0.030 in (0.76 mm) (10 K only) and 0.050 in parameters. (1.27mm) diameters available with kapton sleeve only. Assembly Type 0.070 in (1.78 mm) diameter normally supplied Assem- with molded plastic tip. MA100 MA200 MA300 bly Type Standard 0.030 in (0.762 0.156 in (3.96 mm) 0.375 in (9.52 mm) MA200 Diameters mm) (D) 0.050 in (1.27 mm) 0.070 in (1.78 mm) 0.080 in (2.03 mm) Body 3/8 in (9.52 mm) 3.75 in (95.25 mm) N/A Length (L) Standard 24 in (610mm) 2 in (51 mm) 24 in (610mm) Lead GG: 36 in (914mm) Length (A) Tolerance See Tolerance See Tolerance See Tolerance Intermittent body temperature measurements are Code and Tem- Code and Tem- Code and Tem- common practice in all phases of patient care. This perature Table perature Table perature Table assembly is ideally suited for the disposable cover Wire Gauge 28, 30, 32, 38, 30 AWG 30 AWG AWG oral and rectal fever thermometers in use today. It features rugged construction with tip sensitive shaft Standard *Heavy Isomid PTFE Medical Grade Wire *Medical Grade PVC assemblies exhibiting resistance values of 2252, Insulation PVC PTFE 3000, 5000, and 10,000 at 77F (25C). Refer to *Polyurethane with Assembly Type table for typical design parameters. Nylon Overcoat Body Molded Plastic or Lexan Shaft Stainless Steel Material Kapton Sleeve Aluminum Tip Nominal R Values 77F 2252 , 3000 , 5000 , 10,000 (25C) (for all three types) Thermal Response Time (63% Response) Series Still Air Still Water* MA100 15 seconds 2.0 seconds Catherter Assembly MA200 35 seconds 0.6 seconds Oral-Rectal Assembly MA300 45 seconds 2.0 seconds Skin Surface Assembly *Response time provided is for assembly plunged from 77F (25C) air to 41F (5C) water.