Electronics
External AC/DC Power Supplies
Posted in Electronics & Computers, Electronics, Products, MDB on Monday, 01 November 2010
The AFM series of external AC/DC power supply units from XP Power (Sunnyvale, CA) is designed for portable medical equipment applications. The AFM range is rated up to
120 watts and provides a +12, +15, +18, +24, or +48 VDC output. The units comply with the UL60601-1/EN60601-1 medical safety standards. The series also meets UL55022 / EN55022, Class B for conducted and radiated emissions.
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New Chips Could Replace Current Method of Testing Medical Devices
Posted in News, Electronics & Computers, Electronics, Sensors, Medical, Patient Monitoring, MDB on Monday, 25 October 2010
Princeton engineers have developed a sensor that may revolutionize how drugs and medical devices are tested for contamination, and in the process also help ensure the survival of two species of threatened animals. In the wild, the African clawed frog produces antibacterial peptides - small chains of amino acids - on its skin to protect it from infection. Princeton researchers have found a way to attach these peptides, which can be synthesized in the laboratory, to a small electronic chip that emits an electrical signal when exposed to harmful bacteria, including pathogenic E. coli and salmonella. "It's a robust, simple platform," said Michael McAlpine, an assistant professor of mechanical and aerospace engineering. "We think these chips could replace the current method of testing medical devices and drugs."
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The Ins and Outs of Connectors in Medical Equipment
Posted in Electronics & Computers, Electronics, Mechanical Components, Medical, Patient Monitoring, Features, MDB on Wednesday, 01 September 2010
Medical equipment manufacturers are placing greater emphasis on higher resolution imaging, viewing, and displays in diagnostic equipment. As a result, EMI and RFI requirements are critical considerations when designing X-ray machines and ultrasound equipment. In addition to resolution requirements, diagnostic equipment is becoming increasingly portable, resulting in demands for smaller, lighter components that are still highly reliable. Because connectors are used extensively in medical diagnostic equipment, there are a number of design considerations manufacturers must implement to conform to these requirements. Materials and filtering of the connector play a key role in shielding to meet EMI/RFI requirements, while pin counts, pin spacing, and contact system design affect the size and life expectancy of the connector.
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Power Supplies
Posted in Electronics & Computers, Electronics, Products, MDB on Wednesday, 01 September 2010
Protek Power (Hudson, MA) offers the PMP31 Series of medical desktop power supplies that provide 30 watts of power in a compact 1.96" × 4.64" × 1.26" package. The series is approved to UL60601-1, CSA22.2 No. 601.1, and EN60601-1 medical standards, and complies with EN55011/FCC/VCCI Class B radiated and conducted EMI standards. With standby power of
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Steering By Sniffing
Posted in News, Electronics & Computers, Electronics, Rehabilitation & Physical Therapy, Medical, MDB on Thursday, 29 July 2010
A sniffing-based device developed at the Weizmann Institute of Science in Israel may enable disabled people to navigate wheelchairs or communicate with loved ones. The system identifies changes in air pressure inside the nostrils and translates these into electrical signals. In the future, researchers predict that this technology may even be used to create a "third hand" to assist healthy surgeons or pilots.
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Scheduling Accessory Assists Patients with Cognitive Disorders
Posted in Treatment Devices, Electronics & Computers, Electronics, Features, MDB on Thursday, 01 July 2010
Neuropsychology is the study of how the brain relates to behavior, emotion, and cognition. Clinical neuropsychologists evaluate the behavioral effects of neurological and developmental disorders stemming from brain injury, strokes, multiple sclerosis, Alzheimer’s disease, and Parkinson’s disease. Millions of Americans are currently living with these cognitive disorders, including a growing number of veterans returning from Iraq with brain injuries. The disorders often result in cognitive impairments that make it difficult to plan daily activities and stay on task, affecting independence, quality of life, and employment.
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Power Supplies
Posted in Electronics & Computers, Electronics, Products, MDB on Thursday, 01 July 2010
TDK-Lambda (San Diego, CA) has introduced the NVM175 series of medically approved AC-DC power supplies. Combining 4.5 kVac reinforced input to output isolation with dual input fusing and an output-to-ground isolation of 1500 Vac, the NVM175 meets UL/EN/IEC60601-1 and is suitable for use in BF (Body Floating) type medical applications (e.g. ultrasound, ECG, patient monitors, etc.) It offers a compact 5" × 3" footprint with less than 1U height (1.02" high component height), and universal AC input. It is rated at 180 W at 50 °C with user supplied air flow. Leakage current is 80 μA maximum with 120 Vac/60Hz input. Available with either 12 or 24 V output voltage (with 12V/0.2A standby), the NVM175 achieves up to 90% efficiency, less than 1 W standby power, and RoHs and REACH compliance. Standard features include a power good signal, remote on/off, remote sense, and protection from over-current, over-voltage, and over-temperature conditions.
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