Infusion pump configured to engage a sensor with tubing

Abstract

A pump device includes a pumping mechanism and a housing containing the pumping mechanism. A structure on a door of the housing is configured to urge the tube of a pump set toward engagement with a sensor as the door is closed with the pump set is mounted housing.

1 . A pump device, comprising:
 a pumping mechanism;   a housing containing the pumping mechanism, the housing defining a seat configured to receive a pump set having a fluid lumen that can be acted upon by the pumping mechanism so as to pump fluid through the fluid lumen of the pump set, wherein the pump set is attached to a tube that delivers fluid to the fluid lumen;   a sensor in the housing, the sensor configured to sense a characteristic of the tube when the tube engages the sensor;   a door movably attached to the housing, wherein the door transitions between an open position that exposes the seat and a closed position that covers the seat;   a structure on the door that urges the tube toward engagement with the sensor as the door is closed with the pump set is mounted in the seat.   
     
     
         2 . A pump device as in  claim 1 , wherein the sensor is an air-in-line sensor. 
     
     
         3 . A pump device as in  claim 1 , further comprising a recess in the housing, the recess sized and shaped to receive the tube when the pump set is mounted in the seat. 
     
     
         4 . A pump device as in  claim 3 , wherein the structure on the door also urges tube into the recess in the housing as the door is closed. 
     
     
         5 . A pump device as in  claim 3 , wherein the recess is chamfered. 
     
     
         6 . A pump device as in  claim 1 , wherein the door is rotatably attached to the housing. 
     
     
         7 . A pump device as in  claim 1 , wherein the pumping mechanism is a peristaltic pumping mechanism. 
     
     
         8 . A pump device as in  claim 1 , further comprising:
 the pump set for coupling with the pump device, the pump set comprising: a fluid lumen adapted for passage of an infusion fluid toward a patient; a valve assembly that can be actuated to regulate fluid flow through the fluid lumen; and a frame coupled to the fluid lumen and the valve assembly, the frame adapted to be inserted into a seat of a pump device.   
     
     
         9 . A pump device as in  claim 1 , further comprising a door actuator configured to transitioned to a locked state that locks the door in the closed position, wherein the door actuator is configured to automatically transition a valve assembly of the pump set to the open state when the door actuator is transitioned to the locked state. 
     
     
         10 . A pump device as in  claim 9 , wherein the door actuator automatically transitions the valve assembly to the off state when the door actuator is transitioned to the unlocked state. 
     
     
         11 . A method of coupling a pump set with a pump device, comprising:
 inserting the pump set into a seat of the pump device, wherein the pump device includes a sensor configured to sense a characteristic of fluid flowing through the pump set; and   closing a door of the pump device to secure the pump set in the seat, wherein the door includes protrusion that pushes a fluid tube of the pump set toward engagement with the sensor as the door moves to a closed position.   
     
     
         12 . A method as in  claim 11 , wherein, as the door closes, the door pushes the fluid tube of the pump set away from a position that would cause pinching of the fluid tube. 
     
     
         13 . A method as in  claim 11 , further comprising locking the door, wherein locking the door automatically causes a valve of the pump set to open. 
     
     
         14 . A method as in  claim 11 , further comprising unlocking the door, wherein locking the door automatically causes a valve of the pump set to close. 
     
     
         15 . A method as in  claim 11 , further comprising activating a pump mechanism of the pump device such that the pump mechanism cooperates with the pump set and the platen member to pump fluid through the pump device. 
     
     
         16 . A method as in  claim 11 , wherein closing the door comprises rotating the door from an open position to a closed position.