Implantable transmitter provides wireless option for biomedical devices


Date:
August 4, 2020
Source:
Purdue University
Summary:
Engineers have developed a fully implantable radio-frequency
transmitter chip for wireless sensor nodes and biomedical devices.



FULL STORY ========================================================================== Purdue University innovators are working on inventions to use micro-chip technology in implantable devices and other wearable products such as
smart watches to improve biomedical devices, including those used to
monitor people with glaucoma and heart disease.


==========================================================================
The Purdue team developed a fully implantable radio-frequency transmitter
chip for wireless sensor nodes and biomedical devices. The research
is published in the journal IEEE Transactions on Circuits and Systems
II. The transmitter chip consumes lowest amount of energy per digital
bit published to date.

The transmitter works in a similar fashion to communication technology
in mobile phones and smart watches, but the Purdue transmitter has an unprecedented level of miniaturization and low-energy consumption that it
can be implanted into an eye to monitor pressure for a glaucoma patient or
into another part of the body to measure data related to heart functions.

"A transmitter is an integral part of these kinds of devices," said
Hansraj Bhamra, a research and development scientist who created the
technology while he was a graduate student at Purdue. "It facilitates
a wireless communication between the sensor node or biomedical device
and a smart phone application. The user can simply operate the device
through a smart phone application and receive the biophysiological data
in real-time. The transmitter in this case enables a 24-hour intraocular pressure monitoring for glaucoma patients" The Purdue transmitter chip
works with sensor nodes in a process similar to the way sensors in the
smart cars and other Internet of Things devices connect through various communication components to achieve tasks such as auto-driving.

"In addition to being low power, our transmitter operates on wireless
power to replace the conventional batteries," said Pedro Irazoqui, the
Reilly Professor of Biomedical Engineering and professor of electrical
and computer engineering at Purdue. "Batteries are undesirable since
they increase the device size and weight and make it uncomfortable for patients. In addition, the batteries are built of toxic material and
require frequent recharging or replacement surgeries."

========================================================================== Story Source: Materials provided by Purdue_University. Original written
by Chris Adam. Note: Content may be edited for style and length.


========================================================================== Journal Reference:
1. Hansraj Bhamra, Yu-wen Huang, Quan Yuan, Pedro Irazoqui. An
Ultra-Low
Power 2.4 GHz Transmitter for Energy Harvested Wireless Sensor
Nodes and Biomedical Devices. IEEE Transactions on Circuits and
Systems II: Express Briefs, 2020; 1 DOI: 10.1109/TCSII.2020.3005332 ==========================================================================

Link to news story: https://www.sciencedaily.com/releases/2020/08/200804085922.htm

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