Dr. Leonard Golding, a former heart surgeon, is leading a team at
the Cleveland Clinic's Foundation developing a new LVAD called the CorAide. It
eliminates hemolysis and thrombosis problems by eliminating the seal and
reducing the pump to only three main components.
The pump's three components include a one-piece cast titanium
volute housing, a stator housing containing the motor windings, and a
cylindrical rotating assembly (the only moving part) containing a permanent
magnet and a set of impeller vanes on each axial end of the assembly.
The main pumping end of the rotating assembly has a primary
impeller, while the opposite end has a secondary impeller that allows a balance
of axial hydraulic forces. The configuration uses an inside-out motor along with
an inside-out radial bearing. The inside-out motor combines the magnetic drive
and bearing into one feature, and eliminates the need for a dynamic seal.
"The results in the animal model suggest that the CorAide pump
design is ready to begin pre-clinical qualification for use in humans," says
Dave Horvath, a mechanical engineer at the Cleveland Clinic Foundation who
helped design CorAide. For more information, contact Horvath at Cleveland Clinic
Foundation, Department of Biomedical Engineering, 9500 Euclid Ave., Cleveland,
OH 44195; Tel: (216) 445-3226; FAX: (216) 444-9198.
Andrew Morris designed a circuit that could detect a stroke victim's groan and convert the sound into a signal so caregivers would know when help was needed.
New disc magnet motors fit into the design trend of stepping up to closed loop performance while maintaining the cost advantage of stepper motor technology.
At the Design News webinar on June 27, learn all about aluminum extrusion: designing the right shape so it costs the least, is simplest to manufacture, and best fits the application's structural requirements.
On April 21, NASA launched a novel project, putting into orbit three satellites that employ an off-the-shelf commercial smartphone as the control system.
From Dell / Intel® New Paradigms in Design Work Scott Hamilton, vertical market strategist for Dell Precision workstations, 5/2/2013 5
Early in my career, I worked as a draftsman and remember the days of drawing on vellum with numbered pencils and Mylar with plastic lead. This was a fun experience in the sense that I ...
I've been using workstations for more than 10 years and love finding ways to get more performance from my system. With demanding professional applications that require more power each ...
A lasting memory from my first job as an engineer in an auto assembly plant is standing on hard concrete at six in the morning, vending-machine coffee clutched in hand, listening to ...
For industrial control applications, or even a simple assembly line, that machine can go almost 24/7 without a break. But what happens when the task is a little more complex? That’s where the “smart” machine would come in. The smart machine is one that has some simple (or complex in some cases) processing capability to be able to adapt to changing conditions. Such machines are suited for a host of applications, including automotive, aerospace, defense, medical, computers and electronics, telecommunications, consumer goods, and so on. This radio show will show what’s possible with smart machines, and what tradeoffs need to be made to implement such a solution.
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