| 摘要 |
A catheter occlusion prevention or remediation system for use with catheter-based therapeutic or medical liquid delivery to a patient. The system is an adjunct to a catheter liquid delivery arrangement that typically includes an infusion pump hooked to the patient. The system includes a drive that displaces a pulse effector against liquid in a pulse chamber in fluid-flow communication with liquid in the catheter to create a pressure pulse that opens occlusions, breaks away occlusions being formed, and prevents occlusion formation. In one embodiment, the drive charges an accumulator that displaces the pulse effector during a period of low pump motor activity maximizing onboard battery life. In another embodiment, the drive is an actuator with an armature that displaces a plunger into the pulse chamber to form the pulse. The resultant pulses are of sufficient duration and pressure above working pressure to achieve occlusion prevention and remediation.
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