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Medical

Michael Dunn
Editor, Design Ideas, IC/FPGA, PCB, and Medical Design Centres
This site is especially for the savvy biomedical electronics design engineer who wants to be at the forefront of medical technology advancements from sensors to signal conditioning circuitry to data converters, microcontroller and interfaces and more. Wireless communication and wireless data transfer are among the key topics of discussion.

Simple pulse oximetry for wearable monitor

Use this circuit as the “heart” of a pulse oximeter and oxygen saturation monitor. Read More...

Tattoo bio-batteries produce power from sweat

Researchers University of California San Diego have designed a sensor in the form of a temporary tattoo that can both monitor a person's progress during exercise and the tattoo biobatteries can also produce power from the perspiration. Read More...

Bluetooth v4.1: What developers need to know

Here’s how the newest chips can take advantage of the latest version of Bluetooth technology’s new functionality Read More...

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Simple pulse oximetry for wearable monitor

Use this circuit as the “heart” of a pulse oximeter and oxygen saturation monitor. Read More...

Avago Tech Note: 14.2mm wide Creepage and clearance optocouplers for high-voltage applications

Not any optocoupler will do for applications requiring extra-high-voltage isolation. Read More...

Inductive sensing with left-handed antenna for biomedical applications

Could an inductive sensor help assay biological and other substances? Read More...

Elastomer-assisted inductive sensing

Embedding inductive coils under an off-the-shelf mattress pad creates a multi-point position and pressure sensing system for sleep-posture analysis. Robotic applications also beckon. Read More...

Water & vandal-proof keypad uses piezoelectric disc as sensor and buzzer

An ingenious and low-cost method to create a rugged “UI”. Read More...

Linearize thermistors with new formula

Optimize thermistor performance at any preferred temperature. Read More...

Best Design Ideas of 2013Q3

We present the best Design Ideas of the last quarter! Read More...

Single-cycle logarithms & antilogs

Here are some very fast log (and antilog) blocks well-suited to FPGA implementation. Read More...

Adaptive Schmitt trigger tames unruly signals

Some biomedical, sensor, and other signals can be almost impossible to derive a clean trigger from. This circuit could help. Read More...

∑-∆ Isolation amplifier transfers low frequencies across barrier

Running a ∑-∆ stream over the barrier makes for an inexpensive analog isolator. Read More...

Filter quashes 60-Hz interference

This circuit filters 60-Hz interference from low-frequency, low-level signals. Read More...

Quartz crystal-based remote thermometer features direct Celsius readout

Although quartz crystals have served as temperature sensors, designers haven't taken advantage of the technology because few manufacturers offer the sensors as standard products (references 1 and 2). In contrast to conventional resistance- or semiconductor-based sensors, a quartz-based sensor provides inherently digital-signal conditioning, good stability, and a direct digital ou... Read More...

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Tiny piezoelectric sounder fits portable healthcare devices

With dimensions of just 9x9x1.7 mm, the lightweight PKMCS0909E4000-R1 surface-mount piezoelectric sounder from Murata offers a combined weight and area reduction of 44% compared to previous Murata sound components. Read More...

Wearable MEMS gyroscope tracks up to ±4000 dps

Housed in a 3x3x0.75-mm QFN package, the ITG-3701 three-axis MEMS gyroscope from InvenSense offers small size, low power, and a full-scale range of up to ±4000 dps (degrees per second) for high-impact wearable applications, such as sports and concussion analysis. Read More...

Processor integrates sensing, wireless for wearable apps

Toshiba's TZ1001MBG application processor is aimed at wearable devices of all shapes and usages, including activity monitors, wrist-worn electronics and head-mounted computers. Read More...

Disposable and rugged BP sensor

Merit's BP sensor uses piezoresistive technology. Read More...

Ada comes to ARM Linux

Ada support is now available on embedded ARM processors running Linux for safety critical code development. Read More...

V-Lock compatible power connector integrates 10A fuses

Schurter’s KEA series power entry module, with 1- or 2-pole fuseholder, now mates with V-Lock cord sets. Read More...

Renata shrinks size of Li-ion polymer batteries

The Renata Batteries division of the Swatch Group has added three new models to its ICP series of rechargeable lithium-ion polymer battery packs to give design engineers more form factors and capacity ratings from which to choose for their portable medical, industrial, and consumer electronic devices. Read More...

Mission-critical RTOS available for Renesas MCUs

The Wittenstein High Integrity Systems real-time operating system for mission-critical systems is now available for Renesas RX631/RX63N microcontrollers. Read More...

Digital UV index sensors add health monitoring to smartphones, wearables

Silicon Labs' single-chip Si1132/4x optical sensors track UV exposure, ambient light and other biometrics to add health-monitoring functions to smartphones and wearable computing products. Read More...

12-V, 750-mA DC/DC nano-size buck regulator

With a pre-set switching frequency of 2.1 MHz, designers will really like the small surface mount capacitors and inductor external to this tiny buck regulator. Read More...

PSU packs 310W without skimping on MTBF

Emerson PSU rated for non-patient contact and industrial usage. Read More...

60W world medical PSU is fully burned-in

Australian firm Powerbox manufactures for the domestic and world market. Read More...

Chip amalgamates many functions needed for healthcare devices

This combination data acquisition chip and computational engine addresses the requirements of health devices, fitness meters, wearable monitors, and more. Read More...

60W medical PSU fits into small spaces

SL Power's newest internal PSU fits into tight spaces, like a 1U chassis. Read More...

Medical USB modem

When the only way to communicate medical data is via phone line, a modem is still the solution. Read More...

Transformers work with TI power driver for isolated supplies

Wurth Electronics Midcom offers a series of four transformers for the Texas Instruments SN6501 oscillator/power driver, a push-pull device that is intended for small-form–factor isolated power supplies used in CAN, RS-232, RS-485, SPI, I2C, and low-power LAN interface applications. Read More...

A gaggle of ultrasound components

Supertex introduces a trio of chips for ultrasound designs. Read More...

External medical PSU reaches 250W

This new external, medical qualified supply sports high power output. Read More...

Medical PSUs up to 500W are compact and efficient

Qualified open-frame medical supplies cover 300-500W. Read More...

Medical LED improves operating-room lighting

The Osram Ostar Medical combines a high color-rendering index (CRI) of 95 and the ability to adjust the temperature of the color white. Read More...

DSP-based system-on-chip targets hearing aids and hearing implant devices

ON Semiconductor's Ezairo 7100 series of integrated circuits and packaged hybrids are aimed at hearing aids and hearing implant devices. Read More...

Ultrasound transceiver is highly integrated

Maxim's new octal ultrasound transceiver greatly simplifies equipment design. Read More...

TI unveils smallest 2.5-kVrms digital isolation devices

Texas Instruments (TI) has introduced the industry’s first family of digital isolation devices to offer the highest isolation rating, at 2.5 kVrms, in a small, 5- by 6-mm QSOP package. Read More...

75W supply provides dual BF & CF outputs

BEAR's latest medical supply has BF & CF outputs. Read More...

Medical PSU reaches 180W

XP Power's latest approved power supplies are rated 180W. Read More...

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Teardown: Inside Given Technology's Pillcam Colon 2

Low-power wireless and sensor experts from Zarlink-Microsemi and Aptina helped Given Imaging optimize the Pillcam Colon 2, a gentler alternative to conventional endoscopy and colonoscopy. Read More...

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Antenna ring-down time measurement for medical applications

Measure the ring-down time of antennas used in EPR & NMR. Read More...

Product how-to: Decimation and AC line rejection filtering – a study

Programmable SoCs allow the creation of an entire data acquisition system on a chip. Read More...

Product how-to: Selection of reliable, small form-factor passives for medical devices

Learn about some of the factors to consider when selecting tiny hybrid & PCB-capable passives for medical designs. Read More...

MSOs probe analog and digital

Mixed-signal oscilloscopes combine analog and digital inputs that provide a view of how signals interact in embedded systems. Read More...

Tools and techniques for electrical characterization of biosensors

Learn about the technology and characterization of bioelectronic sensors, which are finding use in healthcare as well as other areas. Read More...

Redundancy for safety-compliant automotive & other devices

Learn the many kinds of HW & SW redundancy that can be applied to safety-critical systems and SoCs. Read More...

What are molded interconnect devices?

In this article, Shane Stafford explains what MIDs are and details the use of laser direct structuring for manufacturing them. Read More...

Roundup: PCB protection/coatings

Selecting the right coating and method of application for a particular industry such as military/aerospace, industrial, automotive, etc. will also help extend the life of the PCB. Read More...

I'll take Watson for 2014, Alex

IBM's Watson wasn't just about winning Jeopardy. 2014 could see the beginning of a massive breakout of Watson technology in medical and many other applications. Read More...

Pulse oximetry basics and MCUs

Enjoy this backgrounder on pulse oximeter design. Read More...

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Tattoo bio-batteries produce power from sweat

Researchers University of California San Diego have designed a sensor in the form of a temporary tattoo that can both monitor a person's progress during exercise and the tattoo biobatteries can also produce power from the perspiration. Read More...

Act fast to harness and optimize MEMS performance in portables

Starting to use MEMS technology in portable applications including wearables, healthcare, gaming or automotive? If so, tune in on Thursday, June 26 at 2:00 pm ET to catch Optimizing MEMS Performance in Portable Applications. Read More...

Is this the smallest battery in widespread use?

This grain-of-rice battery is not just an interesting lab-demonstration project; hundreds have been made and are in use in the field. Read More...

Pacemaker hacking dangers

Recently I came across some really good tutorials and tech articles discussing the security of pacemakers. A very large segment of our world population has pacemakers which has enhanced their quality of life and in many cases saved their lives. Read More...

Medical software standards: Boon & bane

The medical device industry is finally catching up to other industries in terms of software safety standards, but at what cost? Read More...

Hadron therapy, PXI team up against tumors

Hadron therapy for cancer treatment moves forward at the CNAO's synchrotron lab in Italy with the help of PXI & NI. Read More...

DIY biometrics

What kind of biometrics can we get and how can we use this information? Read More...

Inside ultrasound

This non-invasive technique uses sound waves to create images of what’s inside of the body---without radiation! Read More...

Ultralow-cost paper microscope shows promise for disease detection

The Foldscope, a completely functional microscope built purely by folding paper, can magnify objects over 2,000 times and is small enough to fit in a pocket. Oh, and it costs about 50 cents. Read More...

I'll take Watson for 2014, Alex

IBM's Watson wasn't just about winning Jeopardy. 2014 could see the beginning of a massive breakout of Watson technology in medical and many other applications. Read More...

3D-printed microbatteries to power your next medical design

3D-printed lithium-ion batteries a millimeter on a side could power medical devices. Read More...

Getting medical devices onto the LAN

Many medical devices use RS-232 communications and thus need converters to send data across networks. Read More...

Una nueva era de equipos médicos (A new era of medical equipment)

Las personas a veces me preguntan hacia donde se dirige la medicina. Mi respuesta es que la innovación médica del futuro será a través de la medicina genómica. Probablemente recuerden que durante la década de los noventas, los científicos trataban de mapear el genoma humano. Era una carrera entre el departamento de Energía y Ciencia en Estados Unidos y una compañía privada llamada Celera Genomics. (People sometimes ask me where medicine is going. My answer is that medical innovation of the future will be through genomic medicine. You probably remember that during the Decade of the 1990s, scientists were mapping the human genome.) Read More...

Medical happenings: March 2014

A look at recent news and happenings in medical electronics and design, from implantable energy harvesting, to BANs, to interferometer/MEMS-based sensors. Read More...

Smart watches: a healthy opportunity for OEMs

The smart watches of the near future promise to push the boundaries beyond simple time and data delivery as they move toward being true health trackers. Read More...

A CES meeting with Paro, the therapeutic robot

Paro is a therapeutic robot that gives the well-known benefits of animal therapy to patients in hospitals and extended care facilities where live animals might cause logistical difficulties. Read More...

The imec Technology Forum cometh

Well known in Europe, but not so much in North America, imec conducts leading-edge research, and their technology forum is coming to Brussels, June 4-5, with wide-ranging topics like microelectronics, medical, sensors, imaging, energy, wireless, and more. Read More...

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