Bookmark Kaumudi Online  Bookmark this site  Editor@Kaumudi  |  Marketing  Print Advt rates  |  Calendar 2012        Go!    
 
 
September 20, Wednesday 2017 6:33 PM       

       HEADLINES: Keralashabdam Managing Editor Dr B A Rajakrishnan passes away                                              Son beats father, drives him out of house                                              State school festival in January only                                              Principal held for sexual harassment                                              Charge sheet against Dileep to be filed on Oct 7                                              How India, China perform would fundamentally shape the world: Rahul                                              Heavy rains in Mumbai, flight services hit                                              Toll surges to 248 in powerful Mexico quake                                              India win four medals in Asian Martial Arts Games                                              Bairstow to open for England in 1st Windies ODI                                              After Ramkumar's decisive defeat, Yuki gets consolation win                                              Players choose Amarjit to lead India in FIFA U-17 WC                                              After Dhoni, Tendulkar now a biopic on woman cricketer Jhulan                                              Kaumudi Facebook
       SCI&TECH Next Article: 'Manned missions to Moon, Mars may face medical emergencies'  
       Wireless, battery-less pacemaker developed
 
         Posted on :19:43:25 Jun 6, 2017
   
A A
       Last edited on:19:43:25 Jun 6, 2017
         Tags: Wireless, battery-less pacemaker developed
 

HOUSTON: Scientists have developed a new wireless, battery-less pacemaker that can be implanted directly into a patient's heart, an advance that could lead to "triple crown" of treatment for irregular heartbeat.

The pacemaker harvests energy wirelessly from radio frequency radiation transmitted by an external battery pack, researchers at Rice University in the US said.

The chip at the system's heart is less than four millimetres wide and incorporates the receiving antenna, a current rectifier, a power management unit and a pacing activation signal.

"This technology brings into sharp focus the remarkable possibility of achieving the 'triple crown' of treatment of both the most common and most lethal cardiac arrhythmias (irregular heartbeat)," said Mehdi Razavi, associate professor at Baylor College of Medicine in the US.

The treatment involves "external powering, wireless pacing and cardiac defibrillation that is not only painless but is actually imperceptible to the patient," said Razavi.

A defibrillator delivers a dose of electric current to the heart.

The team successfully tested the device in a pig and demonstrated it could tune the animal's heart rate from 100 to 172 beats per minute.

A capacitor (energy storing device) and a switch join the chip on a circuit board that is smaller than a dime. The chip receives power using microwaves in the 8 to 10 gigahertz electromagnetic frequency spectrum.

The frequency of the pacing signals produced by the pacemaker can be adjusted by increasing or decreasing power transmitted to the receiving antenna, which stores it until it reaches a predetermined threshold, researchers said.

At that point, it releases the electrical charge to the heart and begins to fill again, they said.
Pacemakers use electrical signals to prompt the heart to keep a steady beat, but they have traditionally not been implanted directly into a patient's heart, researchers said.

They are located away from the heart, where surgeons can periodically replace their onboard batteries with minor surgery, their electrical signals are transmitted to the heart via wires called 'leads'.

The prototype wireless pacemaker reduces these risks by doing away with leads.

A A
       SCI&TECH
Next Article: 'Manned missions to Moon, Mars may face medical emergencies'
 
 
SCI&TECH HEADLINES
Astrophysicists make music from Saturn's moons, rings  
Rooter includes Kabbadi, F1 under one roof  
Orbiting supermassive black holes discovered for first time  
Theweightmonitor.com launches mobile app for easier access to one-stop weight management platform  
New drug to treat blood cancer developed  
Threat of asteroid impact looming over Earth: experts  
Hottest known planet in universe discovered  
Wireless, battery-less pacemaker developed  
'Manned missions to Moon, Mars may face medical emergencies'  
Ransomware threat: Centre activates mechanism to prevent ‘Wannacry’ cyber attack  
2 lakh hit by 'unprecedented' cyberhack in 150 nations:Europol  
foodpanda revamps mobile app; provides more options  
ixigo launches trains app for Apple iOS users  
Virtual humans may help doctors learn empathy: study  
Gamers, here are five games to watch out for  
Yahoo India homepage gets brand new look  
Spacecraft flies between Saturn and rings in historic 1st  
Google targets 'fake news,' offensive search suggestions  
Offensive WhatsApp posts can land group admin in jail  
Facebook for 'everyone' and not just high end: Zuckerberg  
Google Earth re-invented for new era  
NASA images show how India looks from space at night  
Signs of life detected below world's deepest point  
'iPhones assembly in Bengaluru by Apple in less than a month'  
Five astronauts assigned to future ISS mission: NASA  
 
Do you think Vellapally Natesan will join LDF, eventually?
yes
 
no
 
no opinion
 
 
 
Home Kerala India World Business Sports Sci&Tech Education Automobile CityNews Movies Environment Letters 
© Copyright keralakaumudi Online 2011  |  Reproduction in whole or in part without written permission is prohibited.
Head Office Address: Kaumudi Buildings, Pettah P.O, Trivandrum - 695024, India.
Online queries talk to Deepu Sasidharan, + 91 98472 38959 or Email deepu[at]kaumudi.com
Customer Service -Advertisement Disclaimer Statement   |  Copyright Policy