Bookmark Kaumudi Online  Bookmark this site  Editor@Kaumudi  |  Marketing  Print Advt rates  |  Calendar 2012        Go!    
 
 
November 23, Thursday 2017 10:19 PM       

       HEADLINES: Actress attack case: Police to request for special court for trial                                              Dileep tried to defame actress even after attack                                              Murugan’s death: Six doctors become accused                                              Saesendran shouldn’t be minister again: Chennithala                                              Ministerial-level team heads to Munnar to solve land issues                                              Cong, Hardik deceiving each other on Patel reservation: Jaitley                                              Saeed's release order: Pak 'hoodwinking' global community                                              Will not modify Govt order banning pet coke, furnace oil: SC                                              Chennai: Student's suicide triggers violence in Sathyabama University                                              People have cancer because of their sins: Assam Health Minister                                              Zimbabwe's ex-VP Mnangagwa to be sworn in as President                                              Russia, Iran, Turkey agree to hold Syrian 'congress'                                              SE Asia, S Asia beginning to emerge as regional powers: Australia FM                                              Tibet wants to stay with China, seeks development: Dalai Lama                                              Here's when Federer felt insulted                                              BCCI has lost its reputation: Anurag Thakur                                              Hong Kong Open: Sindhu advances to quarter finals                                              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
How breastmilk protects babies from food allergy decoded  
Stars among the oldest in our galaxy discovered  
Apple delays release of smart speaker - HomePod  
Owning a dog may add years to your life  
'Textisms' actually add meaning to written words  
Sugar may heal wounds, says study  
Heart-stopping sex? It's rare  
Over 1.3 lakh Indians 'book ticket' to Mars  
China all set to make first contact with aliens  
Greenland Ice sheet could be losing mass, says study  
'Flying taxis' could be a thing by 2020  
When art comes to the rescue of depressed patients  
Here's a mechanism that can help you get rid of bad memories  
2017 ozone hole smallest since 1988: NASA  
Marijuana can dull the brain in some HIV patients  
We use lesser brainpower than thought  
You can soon delete 'sent messages' on WhatsApp  
There is a connection between nose and emotions  
75% of pet reptiles die within a year: Study  
Gamma rays will reach beyond limits of light: Researchers  
Suicide molecules may help combat cancer: Study  
Aspirin a day may keep liver cancer away  
Clearing the myths about osteoporosis  
Stress as unhealthy as junk food  
Planet Nine does exist in solar system: NASA  
 
Do you think media was banned at CM's office on Tuesday?
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