| 摘要 |
<p>Programmable methods and apparatus for providing flow control in valves. In a preferred embodiment flow control occurs by pressing opposite sides of a very flexible tube section together to selectively, and programmably, closing and opening the flow pathway. Linear or rotary cam electrically motorized members provide valve function without requiring fluid flow through the valve. Alternatively, micro-fluidic amplifiers and fluidic logic circuits can be used to sense and control fluid pressure in a pre-calculated proportional flow regulation pattern. The invention can be used in medical, hospital, clinic and home-care units for bladder cycling a patient whose urinary tracts have an indwelling catheter, utilizing a pressure transducer that opens and closes the valve in accordance with preprogrammed pressure buildup or time intervals. Other uses include a medical infusion subsystem by regulating flow of fluid from a medication reservoir into the blood or into a digestive system. Electromechanical and electrochemical sensors coupled by tubing to reservoirs can collect electromechanical data. Additional uses can include industrial and consumer applications can include kidney dialysis, heart catheters, and neutral or cranial stents, and the like, can be additional medical areas for specific computer-chip controlled flow regulation units. Displays and/or parameter warning indicators can also be used.</p> |
