Treatment system with infusion apparatus pressure priming

A method to control delivery of a fluid flow from an infusion apparatus in a blood treatment system, wherein the fluid flow comprises a plurality of boluses, wherein the method comprises:

• connecting a replacement fluid dispenser in the infusion apparatus to replace a prior replaceable fluid dispenser;
• commanding the infusion apparatus to operate on the replacement fluid dispenser to provide one or more boluses of the plurality of boluses into an infusion line configured to be connected in fluid communication to one of an access blood line, a return blood line, and a patient;
• determining if the infusion apparatus is being prevented when commanded from delivering the one or more boluses to one of the access blood line, the return blood line, and the patient;
• controlling the infusion apparatus to deliver a plurality of boluses at a set flow rate into the infusion line if the infusion apparatus is not being prevented from delivering the one or more boluses;
• and
• pressure priming the replacement fluid dispenser if the infusion apparatus is being prevented from delivering the one or more boluses by accelerating one or more commands to the infusion apparatus to deliver one or more boluses into the infusion line such that pressure in the replacement fluid dispenser increases and a time required to deliver boluses to one of the access blood line, the return blood line, and the patient is decreased, wherein a time interval between an accelerated command and a prior command immediately preceding the accelerated command is less than a time interval between commands provided to deliver boluses at the set flow rate.

A blood treatment system comprising:

• a blood pump;
• a filter, wherein access and return blood lines are in fluid communication with the filter;
• an infusion line;
• a user interface configured to allow a user to provide an input comprising a selected connection, wherein the selected connection comprises one of a connection of the infusion line to the return blood line or connection of the infusion line directly to a patient;
• an infusion apparatus controllable to provide a fluid flow from a replaceable fluid dispenser at a set flow rate to the infusion line, wherein the fluid flow comprises a plurality of boluses;
• and
• a controller configured to:
• determine, upon connection of a replacement fluid dispenser in the infusion apparatus and if the user provided a selected connection of the infusion line to the return blood line, whether the infusion apparatus is being prevented from delivering one or more boluses to the return blood line, and
• prime the pressure in the replacement fluid dispenser if it is determined that the infusion apparatus is being prevented from delivering one or more boluses to the return blood line.

A treatment system comprising:

• an infusion line;
• an infusion apparatus controllable to provide a fluid flow from a replaceable fluid dispenser at a set flow rate downstream therefrom, wherein the fluid flow comprises a plurality of boluses, and further wherein the infusion apparatus comprises an actuator configured to operate on the replaceable fluid dispenser to provide one bolus of the plurality of boluses into the infusion line when commanded;
• and
• a controller configured to:
• determine, upon connection of a replacement fluid dispenser in the infusion apparatus, if the infusion apparatus is being prevented when commanded from delivering one or more boluses downstream of the infusion apparatus, and
• prime the pressure in the replacement fluid dispenser if it is determined that the infusion apparatus is being prevented from delivering one or more boluses downstream of the infusion apparatus, wherein the controller is configured to prime the pressure in the replacement fluid dispenser by accelerating one or more commands to the infusion apparatus to deliver one or more boluses into the infusion line so that pressure in the replacement fluid dispenser increases and a time required to deliver boluses is decreased, wherein a time interval between an accelerated command and a prior command immediately preceding the accelerated command is less than a time interval between commands provided to deliver boluses at the set flow rate.

A method to control delivery of a fluid flow from an infusion apparatus, wherein the fluid flow comprises a plurality of boluses, wherein the method comprises:

• connecting a replacement fluid dispenser in the infusion apparatus to replace a prior replaceable fluid dispenser;
• commanding the infusion apparatus to operate on the replacement fluid dispenser to provide one or more boluses of the plurality of boluses into an infusion line;
• determining if the infusion apparatus is being prevented when commanded from delivering the one or more boluses downstream of the infusion apparatus;
• controlling the infusion apparatus to deliver a plurality of boluses at a set flow rate into the infusion line if the infusion apparatus is not being prevented from delivering the one or more boluses;
• and
• pressure priming the replacement fluid dispenser if the infusion apparatus is being prevented from delivering the one or more boluses by accelerating one or more commands to the infusion apparatus to deliver one or more boluses into the infusion line such that pressure in the replacement fluid dispenser increases and a time required to deliver boluses is decreased, wherein a time interval between an accelerated command and a prior command immediately preceding the accelerated command is less than a time interval between commands provided to deliver boluses at the set flow rate.