Multiple reservoir programmable pump

摘要

Different embodiment programmable pumps including multiple reservoirs are disclosed, as are methods of utilizing same. The pumps generally include at least two reservoirs and means for dispensing active substances housed in each at varying flow rates.

主权项

1. A method for dispensing first and second active substances at varying flow rates from a programmable pump system to a patient comprising:
providing a pump housing defining an interior including a first chamber containing the first active substance, a second chamber containing the second active substance, and a third chamber containing a propellant; dispelling the first active substance from the first chamber at a first flow rate to a catheter fluidly connected to the first and second chambers; dispelling the second active substance from the second chamber at a second flow rate to the catheter; determining whether to actuate a first valve in fluid communication with the first chamber to vary the first flow rate based on a comparison of pressure readings taken by the first and second pressure sensors; and determining whether to actuate a second valve in fluid communication with the second chamber to vary the second flow rate based on a comparison of pressure readings taken by the third and fourth pressure sensors.