| 摘要 |
The present invention provides a self-adjusting fluid pump that includes a piston pump containing at least one piston with a pressure sensor. The fluid pump also includes at least one fluid-containing pump chamber within the piston pump, adjacent to said piston, wherein advancing the piston causes fluid to flow from the pump chamber to a biological destination, and retracting the piston causes fluid to passively fill the pump chamber. A microprocessor uses data from the piston pressure sensor to calculate the rate of fluid output flow from the pump chamber for each pump cycle and compares the output flow rate to a pre-specified value range. If the output flow rate deviates from the pre-specified value range, the microprocessor adjusts the fluid output flow of the piston pump in order to bring the output flow rate within the pre-specified value range. The adjustment can be made by increasing or decreasing stroke rate (piston velocity), stroke volume, or a combination of both. |
