Infusion systems with patient-controlled dosage features

A fluid assembly for use within an implantable pump for permitting patient-control of drug delivery comprising:

• a body defining a first fluid control path and a second fluid control path, wherein the first control path delivers drug from the implantable pump, wherein the implantable pump is selected from the group consisting of a fixed-rate pump and a programmable pump;
• a first flow regulator in the first fluid control path for limiting flow therein to a substantially constant rate;
• a patient-controlled pump in the second fluid control path for permitting a patient to discharge a bolus of drug into the second fluid control path;
• a second flow regulator in the second fluid control path for limiting the recharge rate of the patient-controlled pump.

A pump for providing patient control of drug delivery to the patient's body comprising:

• a reservoir for containing a supply of drug;
• a first flow path for delivering a substantially fixed flow of drug from the reservoir to the body by operation of the pump, wherein the pump is selected from the group consisting of a fixed-rate pump and a programmable pump;
• and
• a patient-controlled pump in fluid communication with the reservoir and the first flow path for delivering a patient-controlled dosage to supplement the drug flow in the first flow path wherein the patient-controlled dosage is provided from the reservoir of the pump.