Medical drug delivery systems with mixing chamber
OwnerMichael Sasha Johninventor
Life of this patent
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Abstract
A drug delivery system provides for controlled mixing of drugs, using at least one mixing chamber. Flow controllers guide drugs into single or multiple catheters, enabling a single lumen catheter to dispense multiple drugs, diluting a concentrated drug to provide varying drug concentration. A buffer fluid can deliver precise drug amounts or can separate drugs within a catheter. A patient's bodily fluid can serve as a diluent or buffer fluid. A drug testing/filler apparatus may be used to facilitate filling of multiple reservoirs. Bolus or continuous delivery of drug to selected distal locations can occur at independent rates. New catheter systems, hub assemblies, and uses therefore are also described. New methods for promotion of healthy pregnancy and treatment of a developing fetus are disclosed.
Claims20
A drug pump system comprising:
- an implantable drug pump having a housing;
- a first reservoir containing a first drug and operated upon by a first pump configured for biasing fluid to flow through an output port of the first reservoir, said output port having a first flow controller;
- at least a second reservoir containing a second drug and operated upon by a second pump configured for biasing fluid to flow through an output port of the second reservoir, said output port having a second flow controller;
- a first mixing chamber downstream of the first and second reservoirs, said mixing chamber configured for providing mixing of at least the first and second drugs to occur independently from dispensing of fluid from the mixing chamber and through at least one output port in the housing;
- a first set of fluid conduits connecting the output ports of the reservoirs with the first mixing chamber and a second fluid conduit connecting the first mixing chamber with the at least one output port in the housing that allows fluid to pass through the housing;
- and
- a controller configured to provide independent control of the fluid flow from at least the first and second reservoir into the mixing chamber by controlling at least one of a) the first pump and the second pump, and b) first and second flow controllers of output ports of the reservoirs.
Dependencies are inferred from the claim text.