I not sure about whether clotting was a problem, but hemolysis (breaking apart the red blood cells) is. Pumping blood requires very gentle movements in order to avoid damaging the cells. Just modestly squeezing your finger can burst blood cells. When a diabetic is taking a blood sample and squeezes their finger too much, it causes a significant error in the glucose meter's reading, and this is caused by bursting too many blood cells and their intracellular contents diluting the glucose concentration of the plasma...
-Mark -----Original Message----- From: Stephen A. Lawrence [mailto:[email protected]] Sent: Tuesday, January 18, 2011 6:51 AM To: [email protected] Subject: Re: [Vo]:Nagel: Check List for LENR Validation Experiments On 01/17/2011 11:24 PM, Jed Rothwell wrote: > Peristaltic pumps are an example of technology that by rights should > not work, but they managed to pull it off. They overcame what seemed > to be insurmountable problems with plastics. You have a wheel pressing > down and squeezing the plastic tube thousands of times an hour for > weeks or months. Early plastics quickly became brittle and broke. I > don't recall who did this, but I read about it and I got the > impression that person really, really, REALLY wanted to make > peristaltic pumps work, driven by some inscrutable inner desire. I have the impression that pumps like that are really good for pumping whole blood. Anything with an identifiable impeller also has edges inside, and tends to cause clots. If you can get away with nothing but a smooth tube, you can -- maybe! -- avoid ripping platelets and forming clots inside the pump. But I have no idea where I might have run across that information... > > - Jed >
