Navigation Links
Web will work wonders for the faint hearted
Date:2/14/2008

A new device could put the beat back into weak hearts - and free patients from a lifetime of anti-rejection drugs.

Current implanted heart assist devices function by sucking blood from the ventricles and then expelling it into downstream vessels. Whilst these have been successful in prolonging the lives of heart patients, they come into contact with the blood stream and hence require life-long drug therapy to suppress the immune system and prevent blood clotting. In addition, many of these devices use high speed turbines to produce the pumping force, and this has been proven to cause damage to cells within the blood increasing the chance of clots forming.

The ingenious device being developed by engineers at the University of Leeds provides a less invasive alternative. The team has developed a specially-woven web made from biocompatible material which will not be rejected by the body.

The webbing wraps around the heart and therefore does not come into contact with the blood stream. Inbuilt sensors recognise when the heart wants to beat and trigger a series of miniature motors which cause the web to contract increasing the internal pressure and assisting the heart to pump the blood around the body.

The team consists of Drs Peter Walker (who devised the original concept) and Martin Levesley from the Universitys School of Mechanical Engineering, cardiac consultants Kevin Watterson and Osama Jaber from Leeds General Infirmary and engineering PhD student David Keeling. The research has been funded by Leeds-based medical charity Heart Research UK.

Its a really simple concept that works in the same way as when you squeeze a plastic bottle, forcing the liquid inside to rise, says PhD student David Keeling who has built a special rig to test the device.

The device is currently at prototype stage with team using a computer simulated model of the human blood flow circuit coupled to Davids mechanical rig. The rig replicates the motion of the heart within the simulation under different conditions, and allows the team to test their web device. The group is currently testing their latest prototype, aiming to refine design and assist strategies. Says David: Weve been looking at finding the optimum timing to trigger and also length of the compressive squeeze.

Once the mechanics have been perfected, the team intends to simulate the effects of different heart diseases to gauge the potential success of the device.

Potential uses for the device are huge. As well as offering support to people suffering from heart and valve problems, the device could also be a bridging aid to patients as they wait for transplants, providing them with a better quality of life. Says David: Recent research has found that with some heart diseases, supporting the heart for a short period with an assistive device reduces the work-load on the heart and allows it to rest and recover. Our device also allows for a controlled relaxation of the heart muscle after contraction, which means that its being supported throughout the whole heartbeat process. Its the same as when you pull a muscle in any other part of your body, rest can often be the best therapy.


'/>"/>

Contact: Jo Kelly
jokelly@campuspr.co.uk
44-113-258-9880
University of Leeds
Source:Eurekalert  

Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Web will work wonders for the faint hearted
(Date:5/3/2016)... ... May 03, 2016 , ... Each year, about 800,000 people suffer from ... the United States and account for one death every four minutes. Many people ... disabled. HCR ManorCare is launching a video series called “Your Brain,” in conjunction with ...
(Date:5/3/2016)... Indianapolis, IN (PRWEB) , ... May 03, 2016 ... ... employee benefits advisory organization, announces Benefits Alliance Insurance Services as the latest addition ... powerhouse Southern California-based Firm comprised of Partners Wayne Blasman, David Styles, and Paul ...
(Date:5/3/2016)... ... May 03, 2016 , ... ... technology (IT) solutions and digital consulting services to the federal government, has been ... Indefinite Delivery / Indefinite Quantity (ID/IQ) contract in support of the U.S. Army ...
(Date:5/3/2016)... Jersey City, NJ (PRWEB) , ... May 03, ... ... today announced the general availability of the latest release of DocAve 6 ... this release, AvePoint helps organizations migrate to SharePoint 2016 and take advantage of ...
(Date:5/3/2016)... ... May 03, 2016 , ... Finding the right way to address a patient’s condition before ... is now getting on board. , “You do the right thing, at the right time, ... goes down, not up,” said Leonard M. Fromer, MD, FAAFP, from Group Practice Forum. “Even ...
Breaking Medicine News(10 mins):
(Date:5/2/2016)... , May 2, 2016  Celsion Corporation (NASDAQ: ... today announced data from the first cohort of ... trial (the OVATION Study) combining GEN-1, the Company,s ... the treatment of newly-diagnosed patients with advanced ovarian ... interval debulking surgery.  In the first three patients ...
(Date:4/29/2016)... 29, 2016 ... Sanofi, leader mondial et ... résultats pour le premier trimestre 2016. ... Contamine, commente les résultats du premier ... pour le reste de l,année. ...
(Date:4/28/2016)... , April 28, 2016 ... "Global Plastic Surgery Products Market 2016-2020" report ... ) , The global plastic surgery ... of 9.47% during the period 2016-2020. , ,The growing ... leading to the growth of the market. Lasers are ...
Breaking Medicine Technology: