Bookmark Kaumudi Online  Bookmark this site  Editor@Kaumudi  |  Marketing  Print Advt rates  |  Calendar 2018        Go!    
 
 
June 22, Friday 2018 12:42 PM       

       HEADLINES: Cheriyan Philip to be Mission coordinator                                              Chengannur by-election: Congress man arrested for spreading controversial phone message                                              Collector seeks legal advice on demolishing check dams                                              Keralites jailed for cyanide poisoning                                              No one should try to hijack yoga, says CM                                              Yoga powerful unifying force in strife-torn world, says Modi                                              Swaraj, Sitharaman to visit US for 1st 2+2 dialogue                                              HC asks for details of physiotherapy facilities in Tihar Jail                                              Lanka thanks PM Modi for grants to run free ambulance service                                              Pak steps up security prior to assembly elections                                              Kidambi Srikanth named Sports Illustrated Sportsperson of the Year                                              Ronaldo aging like 'port wine' at fourth World Cup                                              Pressure on Messi against Croatia after Ronaldo scores again                                              FIFA WC: Mbappe's goal takes France into knockout stages                                              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
Yoga helps against non-communicable diseases: WHO  
Spironolactone can help prevent acne: Study  
Older Amazonian forests help regulate global climate  
Goal conflict linked to depressive symptoms  
A new world: Top 10 new species for 2018  
Beat the risk of frailty with healthy heart  
Twitter to hide trolls that hurl abuse: Twitter CEO  
Fortnite is finally coming to Android  
This test could detect signs of pancreatic cancer  
Aliens exist but may be in parallel Universe: Study  
This is your heart on nitric oxide  
Is your kid's heart clock ticking right?  
Do at-risk adolescents show depressive symptoms on social media?  
NASA launches Insight spacecraft to Mars for deepest dig yet  
Daily intake of this drug can cause certain cancers in men  
A new weapon against epilepsy  
Hail stone weighing three kg sign of climate change: Expert  
PMSing? Could be because of alcohol!  
Social media firms given a week to better protect kids  
The stronger you are, the healthier your brain is  
NASA may soon identify 2,400 alien planets  
What triggers depression among adults?  
Turn your hobbies into part-time job opportunities with these apps  
Apple launches special RED Edition for iPhone 8, 8 Plus  
Humanity’s first flight to Sun to launch in July: NASA  
 
Should Yoga be made compulsory in all schools?
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