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  • Medical Device Link . Implantable Pumps Improve Drug Delivery, Strengthen Weak Hearts Complete pump systems may someday replace damaged or defective organs.
    : displacement of the piston draws the insulin from a reservoir into a piston chamber; when the piston returns to its original position, if forces the insulin through a free-floating catheter, which is usually inserted into the patient's peritoneal cavity. The Infusaid pump uses freon gas to produce positive
  • Pump Basics
    illustrated with a similar curve, which clearly demarcates the relation between the liquid pumped per unit time and the increase in pressure. But curves for different pump categories have very different characteristics. Positive-displacement pumps, for example, show a flow rate virtually independent
  • Applying Steam Turbines For Pump Drives (.pdf)
    well as pump drives because they can be used safely in an explosive atmosphere, do not fail when. overloaded, have high starting torque (useful for positive displacement pumps), and are rugged and reliable. This discussion mainly addresses single-stage turbines 3,500 hp and smaller, but most comments
  • Vacuum and Pressure Handbook: Vacuum Pumps
    condensed water vapor. Positive Displacement Vacuum Pumps. Vacuum pumps fall into the same categories as air compressors do. That is, they are either. positive displacement or nonpositive displacement machines. A positive displacement. pump draws a relatively constant volume of air despite variations
  • Medical Device Link . Pump Suppliers Boost Performance, Not Prices
    for a specific volume, the pump provides an accurate dispense each and every time, regardless of internal variations or machine-to-machine changes." Diener Precision Pumps Ltd. A company that supplies various types of positive displacement metering pumps to medical device OEMs has more than 30 years
  • Medical Device Link .
    the fluid-handling needs of a given application. Many medical devices pump fluids. Fluid transfer is sometimes accomplished using either centrifugal or positive displacement pumps. Centrifugal pumps transfer energy to a fluid through a spinning impeller, converting the impeller energy to fluid
  • Medical Device Link . Dispensing systems for miniaturized diagnostics The requirements of miniaturized assays and other advanced diagnostics pose technical challenges for the development of reagent dispensing systems.
    , CA), a dispensing system that combines a positive-displacement pump with a drop-on-demand solenoid valve to overcome the limitations of traditional dispensing systems. The new system is quantitative (dispense volumes can be programmed), has minimal sensitivity to the physical chemistry
  • Medical Device Link .
    for peristaltic pumps in applications requiring continuous pulsating flow. Bio-Chem Valve Inc., 85 Fulton St., Boonton, NJ 07005. Valve Deposits Fluid Dots and Beads with Speed and Accuracy. A self-contained fluid-dispensing valve supplied by Techcon Systems Inc. can deposit shots as small as 0.010

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