Fluid Mixing System For Pumping Devices And Methods For Use With Medical Fluids

Abstract

A fluid mixing system including an extending channel, at least two fluid inlet ports in fluid connection with the extending channel, at least one outlet port in fluid connection with the extending position between the two fluid inlet ports and a sealing member in sealing engagement with the extending channel is described. The sealing member may be movable within the extending channel to adjust the volumetric ratio of the two fluids delivered through the outlet port.

What is claimed is: 
     
         1 . A fluid mixing system comprising;
 an extending channel;   at least two fluid inlet ports in fluid connection with the extending channel, wherein the at least two fluid inlets ports are positioned at different positions along the extending channel and the at least two fluid inlet ports are configured to introduce at least two fluids into the extending channel;   at least one outlet port in fluid connection with the extending channel and positioned between the at least two fluid inlet ports; and   a sealing member in sealing engagement with the extending channel, wherein the sealing member is movable within the extending channel to adjust a volumetric ratio of the at least two fluids.   
     
     
         2 . The fluid mixing system of  claim 1 , further comprising a plurality of spaced outlet ports in fluid connection with the extending channel. 
     
     
         3 . The fluid mixing system of  claim 2 , wherein the spaced outlet ports are positioned within the channel between the positions of the fluid inlets. 
     
     
         4 . The fluid mixing system of  claim 3 , wherein the position of the sealing member relative to the plurality of spaced outlet ports adjusts the volumetric ratio of the at least two fluids. 
     
     
         5 . The fluid mixing system of  claim 4 , wherein the volumetric ratio of the at least two fluids are further adjusted by changing variables selected from the group consisting of the number of fluid outlet ports, the dimensions of the fluid outlet ports, and combinations thereof. 
     
     
         6 . The fluid mixing system of  claim 1 , wherein the volumetric ratio of the at least two fluids is further adjusted by changing variables selected from the group consisting of the number of fluid outlet ports, the dimensions of the fluid outlet ports, and combinations thereof. 
     
     
         7 . The fluid mixing system of  claim 1 , wherein the fluid mixing system is in fluid connection with inlets of a plurality of chambers of a pump system. 
     
     
         8 . The fluid mixing system of  claim 1 , wherein the fluid mixing system is in fluid connection with the inlets of a plurality of chambers of the pump system through the at least one outlet port. 
     
     
         9 . The fluid mixing system of  claim 8 , wherein each of the plurality of chambers of the pump system comprises a piston slidably disposed therein. 
     
     
         10 . The fluid mixing system of  claim 9 , wherein each of the plurality of chambers comprises at least one of the inlets through which fluid is drawn into the chamber and an outlet from which fluid is expelled from the chamber. 
     
     
         11 . The fluid mixing system of  claim 10 , wherein fluid is drawn into the chamber and expelled from the chamber by reciprocal movement of the respective piston disposed therein. 
     
     
         12 . The fluid mixing system of  claim 11 , wherein the outlet of each of the plurality of chambers is in fluid connection with a common outlet channel. 
     
     
         13 . A fluid mixing system comprising;
 an extending channel;   at least two fluid inlet ports in fluid connection with the extending channel, wherein the at least two fluid inlets ports are positioned at different positions along the extending channel and the at least two fluid inlet ports are configured to introduce at least two fluids into the extending channel;   a plurality of spaced outlet ports in fluid connection with the extending channel and positioned between the at least two fluid inlet ports; and   a sealing member in sealing engagement with the extending channel, wherein the sealing member is movable within the extending channel such that the position of the sealing member in the extending channel relative to the plurality of spaced outlet ports adjusts a volumetric ratio of the at least two fluids, and   wherein the plurality of spaced outlet ports are in fluid connection with inlets of a plurality of chambers of a pump system.   
     
     
         14 . The fluid mixing system of  claim 13 , wherein the system comprises five outlet ports and five chambers, each chamber having an inlet in fluid connection with a respective outlet port on the fluid delivery system and each chamber comprising a piston slidably disposed therein 
     
     
         15 . The fluid mixing system of  claim 13 , wherein the volumetric ratio of the at least two fluids is further adjusted by changing variables selected from the group consisting of the number of fluid outlet ports, the dimensions of the fluid outlet ports, and combinations thereof.