Infusion system with concurrent tpn/insulin infusion

Abstract

An infusion system to provide concurrent TPN/insulin infusion including: a fluid administration set having a primary line in fluid communication with the TPN source, a secondary line in fluid communication with the insulin source, and a common outlet line; a pump operable to removably receive the fluid administration set, the pump being operable to concurrently move the TPN solution through the primary line in response to a TPN solution flow rate signal and the insulin solution through the secondary line in response to an insulin solution flow rate signal; and a flow controller operable to provide the TPN solution flow rate signal and the insulin solution flow rate signal to the pump. The flow controller is further operable to vary the TPN solution flow rate signal and the insulin solution flow rate signal to vary a ratio of TPN solution to insulin solution provided to the common outlet line.

1 .- 18 . (canceled) 
     
     
         19 . A method to concurrently deliver a TPN solution from a TPN source container and an insulin solution from an insulin source container that is separate from the TPN source container, the method comprising:
 providing a fluid administration set having a primary line, a secondary line, a common outlet line, and a pumping/mixing chamber located between and in fluid communication with the primary line, the secondary line and the common outlet line;   connecting the primary line to the TPN source container; connecting the secondary line to the insulin source container;   selectively allowing the primary line to feed TPN solution from the primary line to the pumping/mixing chamber;   selectively allowing the secondary line to feed insulin solution to the pumping/mixing chamber;   mixing the TPN solution and the insulin solution in the pumping/mixing chamber to generate an infusion mixture before the common outlet line;   driving with a positive displacement pumping mechanism the TPN solution from the pumping/mixing chamber through the common outlet line at a TPN dose rate; and concurrently with said driving the TPN solution,   driving with the positive displacement pumping mechanism the insulin solution from the mixing chamber through the common outlet line at an insulin dose rate;   varying at least one of the TPN dose rate and the insulin dose rate to vary a ratio of TPN solution to insulin solution in the infusion mixture.   
     
     
         20 . The method of  claim 19  wherein the varying comprises ramping the TPN dose rate from zero to a continuous phase TPN dose rate during a user selectable duration. 
     
     
         21 . The method of  claim 19  wherein the varying comprises maintaining the TPN dose rate at a continuous phase TPN dose rate and maintaining the insulin dose rate at a selected fraction of the continuous phase TPN dose rate. 
     
     
         22 . The method of  claim 19  wherein the varying comprises tapering the TPN dose rate from a continuous phase TPN dose rate to a TPN dose rate of zero during a user selectable duration. 
     
     
         23 . The method of  claim 19  wherein the varying comprises decreasing the TPN dose rate from a continuous phase TPN dose rate to a Keep Vein Open (KVO) TPN dose rate during a user selectable duration. 
     
     
         24 . The method of  claim 19  wherein the insulin dose rate is a first insulin dose rate and the method further comprises driving the insulin solution at a second insulin dose rate in response to input of the second insulin dose rate by a user. 
     
     
         25 . The method of  claim 19  further comprising monitoring glucose level in the patient and adjusting the insulin dose rate in response to the monitored glucose level. 
     
     
         26 . The method of  claim 19  further comprising displaying planned values of the TPN dose rate and the insulin dose rate as a function of time on a TPN/Insulin Infusion Plot, and displaying an Infusion Progression indicator at a present infusion time on the TPN/Insulin Infusion Plot.