Infusion pump with reversible motor and method of use
First Claim
1. An infusion pump for regulating fluid flow through the flow path of an IV tubing set for intravenous administration to a patient, the infusion pump comprising:
- a pumping mechanism adapted for regulating fluid flow through the IV tubing set, the pumping mechanism comprising a reversible motor having a drive shaft with a Wheel mounted thereon;
a valve adapted for reversibly closing the flow path through the IV tubing set, the valve having an open position, wherein the valve is adapted not to close the flow path through the IV tubing set, and a closed position, wherein the valve is adapted to close the flow path through the IV tubing set; and
a swing arm having a wheel-engaging portion adapted for engaging the wheel and an actuator portion operatively linked with the valve such that, when the motor is turning the drive shaft in a first direction, the swing arm is moved towards a first position where the actuator portion moves the valve to its open position or allows the valve to move to its open position to open the flow path, and, when the motor is reversed to turn the drive shaft in a second direction opposite the first direction, the swing arm is moved to a second position where the actuator portion moves the valve to its closed position or allows the valve to move to its closed position to close the flow path.
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0 Petitions
Accused Products
Abstract
An infusion pump for regulating fluid flow through the flow path of an IV tubing set for intravenous administration to a patient. The pumping mechanism of the infusion pump comprises a reversible motor having a drive shaft with a wheel mounted thereon. A valve is provided which is adapted for reversibly closing the flow path through the IV tubing set, and a swing arm is provided. The swing arm has a wheel-engaging portion adapted for engaging the wheel, and an actuator portion operatively linked with the valve to actuate the valve. The arrangement is such that, when the motor is turning the drive shaft in a first direction, the swing arm is moved towards a first position where the actuator portion allows the valve to move to its open position to open the flow path. When the motor is reversed to turn the drive shaft in a second direction opposite the first direction, the swing arm is moved to a second position where the actuator portion moves the valve to its closed position to close the flow path. An infusion therapy system and a method of use of the infusion pump are also disclosed.
66 Citations
34 Claims
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1. An infusion pump for regulating fluid flow through the flow path of an IV tubing set for intravenous administration to a patient, the infusion pump comprising:
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a pumping mechanism adapted for regulating fluid flow through the IV tubing set, the pumping mechanism comprising a reversible motor having a drive shaft with a Wheel mounted thereon; a valve adapted for reversibly closing the flow path through the IV tubing set, the valve having an open position, wherein the valve is adapted not to close the flow path through the IV tubing set, and a closed position, wherein the valve is adapted to close the flow path through the IV tubing set; and a swing arm having a wheel-engaging portion adapted for engaging the wheel and an actuator portion operatively linked with the valve such that, when the motor is turning the drive shaft in a first direction, the swing arm is moved towards a first position where the actuator portion moves the valve to its open position or allows the valve to move to its open position to open the flow path, and, when the motor is reversed to turn the drive shaft in a second direction opposite the first direction, the swing arm is moved to a second position where the actuator portion moves the valve to its closed position or allows the valve to move to its closed position to close the flow path. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An infusion therapy system for regulating fluid flow for intravenous administration to a patient, the system comprising an IV tubing set having a flow path for fluid, and an infusion pump for regulating fluid flow through the IV tubing set, the infusion pump comprising:
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a valve for reversibly closing the flow path through the IV tubing set, the valve having an open position, wherein the valve does not close the flow path through the IV tubing set, and a closed position, wherein the valve closes the flow path through the IV tubing set; a pumping mechanism for regulating fluid flow through the IV tubing set, the pumping mechanism comprising a reversible motor having a drive shaft with a wheel mounted thereon; and a swing arm having a wheel-engaging portion adapted to engage the wheel and an actuator portion operatively linked with the valve such that, when the motor is turning in a first direction, the swing arm is moved towards a first position where the actuator portion moves the valve in its open position or allows the valve to move to its open position to open the flow path through the IV tubing set, and, when the motor is turning in a second direction opposite the first direction, the swing arm is moved to a second position where the actuator portion moves the valve to its closed position or allows the valve to move to its closed position to close the flow path through the IV tubing set. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. For use with an infusion pump of the type having a motor-driven pumping mechanism adapted to regulate the flow of IV fluid through IV tubing for intravenous administration to a patient, the infusion pump including a valve for reversibly closing the fluid path, and a swing arm operatively linked to a wheel driven by the pump-driving motor;
- a method of closing the fluid path through IV tubing in response to a fault condition, such as an occlusion in IV tubing, in a manner designed to avoid supplying a bolus of IV fluid to the patient when the fluid path is closed;
the method comprising the steps of;pumping IV fluid in the downstream direction toward the patient through IV tubing with the pumping mechanism; reversing the direction of the pump-driving motor when turning off the pump or detecting a fault condition such that the direction of rotation of the wheel is reversed and fluid is pumped in the upstream direction away from the patient; pivoting the swing arm from a first position, in which the valve is allowed to be in an open position allowing fluid flow through the IV tubing, to a second position, in which the valve is moved to a closed position closing the IV tubing to fluid flow, in response to the direction of rotation of the wheel being reversed; and moving the valve to its closed position from its open position by actuating the valve with the swing arm in response to the swing arm being pivoted from its first position to its second position. - View Dependent Claims (30, 31, 32, 33, 34)
- a method of closing the fluid path through IV tubing in response to a fault condition, such as an occlusion in IV tubing, in a manner designed to avoid supplying a bolus of IV fluid to the patient when the fluid path is closed;
Specification