Medical pump

Abstract

A medical pump, comprising: a fluid housing having a plurality of intake openings, sealed by at least one intake valve, and an outlet opening sealed by an outlet valve; a piston which is sealing the fluid housing and connected to a drive mechanism, the drive mechanism pulls the piston to draw fluid from one of the plurality of intake openings and pushes the piston to discharge the fluid into the outlet opening; and a selecting valve enclosing at least two tubes, each providing fluid to one of the plurality of intake openings, wherein the selecting valve closes one of the at least two tubes while opening another of the at least two tubes.

What is claimed is: 
     
         1 . An enteral feeding system, comprising:
 a disposable system portion, comprising:
 a disposable fluid chamber including: (i) at least one intake opening connected to at least one disposable inlet tube connected to at least one fluid bag, (ii) at least one-way intake valves each sealing a respective intake opening, and (iii) an outlet opening sealed by a one-way outlet valve; and 
 a piston disposed in the disposable chamber, the piston having an end portion disposed external to the disposable fluid chamber designed as an easy to mount mechanism for connecting to and detaching the end portion of the piston from a non-disposable reciprocating drive bracket connected to a non-disposable drive mechanism, the reciprocating drive bracket transfers reciprocal motion of the non-disposable drive mechanism for pulling the piston to move the piston up and for pushing the piston to move the piston down within the disposable chamber.