Accelerometer suits implantable medical devices.May 25, 2007 -
Hermetically sealed with shear bond strength of 1 kg, surface-mount Model 40366 delivers repeatability of less than 0.035 pF in SMT footprint of 2.05 x 2.90 mm configured as 3-terminal half-bridge. Variable capacitance, silicon MEMS device features frequency response of 40 Hz, linearity of less than 1%, and transverse sensitivity of less than 1%. Over-range stops include provisions to eliminate electrostatic sticking when accelerometer is over ranged.
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Original Press release
Meggitt Sensing Systems (Endevco Corp.)
30700 Rancho Viejo Rd.
San Juan Capistrano, CA, 92675
USA
Endevco Introduces New Hermetically Sealed, Surface Mountable Accelerometer For Implantable Medical Devices
Endevco Corporation, the leader in sensing solutions for demanding vibration, shock and pressure applications, has announced the introduction of its new model 40366 surface-mount accelerometer with capabilities that are ideal for implantable medical device applications. Endevco's 40366 adds to the company's arsenal of miniature sensing products which recently surpassed a milestone of four million parts delivered to leading medical device manufacturers with no field failures.
The Endevco model 40366 accelerometer is a variable capacitance, silicon MEMS device designed to meet the demanding requirements for use in implantable devices such as rate responsive heart pacemakers and defibrillators. High reliability, repeatability and a very small package size are key criteria for acceleration sensors in these critical quality-of-life medical applications.
Hermetically sealed with a shear bond strength of 1 kg, the model 40366 delivers repeatability of less than 0.035 pF in an SMT footprint of only 2.05 x 2.90 mm configured as a three-terminal half-bridge. Acceleration through the oblate axis causes one capacitor to increase in value as the other decreases, while air damping creates an inertial system that is over damped
Additional features of the Endevco 40366 include frequency response of 40 Hz, linearity of less than 1%, transverse sensitivity of less than 1%, a +/-2g full scale for measurement of fractional-g accelerations in the presence of earth's gravity, and over-range stops with provisions to eliminate electrostatic sticking when the accelerometer is over ranged. The resultant design provides excellent stability, low hysteresis, and ruggedness.
"With patient health and well-being in the balance, manufacturers of implantable medical devices demand the highest levels of performance, and reliability," said Jesse Bonfeld, Medical Market Segment Manager for Endevco. "Our new model 40366 is the latest addition to the Endevco family of miniature sensors for critical healthcare applications and is expected to carry on our tradition of excellence which allowed us to reach the landmark level of four million parts delivered to leading device makers with no field failures."
For further information contact:
ENDEVCO Corporation
Yeni Hoo, Marketing Communications Supervisor
Office: 949.493.8181 x242
Email: yeni.hoo@endevco.com
ENDEVCO Corporation, a Meggitt group company, is one of the world's leading designers and manufacturers of dynamic instrumentation for vibration, shock and pressure measurement. The company's comprehensive line of piezoelectric, piezoresistive, ISOTRON® and variable capacitance accelerometers are used to solve measurement problems in a wide variety of industries including aerospace, automotive, defense, medical, industrial and marine. Available products include pressure transducers, microphones, electronic instruments, and calibration systems. Founded in 1947 with headquarters in San Juan Capistrano, CA, ENDEVCO has a global network of manufacturing and research facilities, sales offices and field engineers in the U.S., Europe and Asia. www.endevco.com
Meggitt PLC, headquartered in the UK, is an international group operating in North America, Europe and Asia. Known for its specialist extreme environment engineering, Meggitt is a world leader in aerospace, defense and electronic industries. www.meggitt.com
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