Systems and components for regulating fluid infusion to a patient
AssigneePerceptive Medical Inc.
InventorsDouglas Patton, Joseph Rinehart, Morgan McKeown
Life of this patent
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Abstract
Various fluid delivery systems are described comprising an infusion pump having a housing with a first opening and a hollow interior portion that is configured to receive a cartridge having a tubing. A pump unit can be disposed within the housing. The pump unit comprises a motor mechanically coupled with a crank shaft or eccentric cam that is configured to move a set of pistons or other objects to thereby compress one or more portions of the tubing over time as the crank shaft or eccentric cam rotates.
Claims16
A fluid delivery system, comprising:
- a pump unit disposed within the housing and comprising a motor mechanically coupled with a crank shaft having a set of sheaves disposed on or connected to the crank shaft;
- wherein the pump unit further comprises a set of pistons and a set of tie rods, and wherein each of the pistons is coupled to the crank shaft by one of the tie rods, such that the tie rod can move with respect to the piston, and wherein each of the tie rods are connected to one of the sheaves, such that the tie rod can move with respect to the sheave;
- and
- wherein the pistons are configured to move over time as the crank shaft rotates.
A cartridge for a fluid delivery system, comprising:
- a housing comprising a top portion, a side portion, and a bottom portion, wherein the housing is configured to retain a portion of a tubing through which a medication can flow from a medication source to a patient, and wherein the tubing extends through the cartridge along the top portion, the side portion, and the bottom portion to form a C-shape, and wherein the tubing extends outside of the cartridge along at least one of the top portion, the side portion, and the bottom portion;
- a valve configured to compress the tubing and prevent fluid flow in the tubing when the valve is in a first position;
- and
- an actuator mechanically coupled to the valve, such that when a force is applied to the actuator, the valve is moved to a second position that allows fluid to flow through the tubing;
- and
- wherein the valve is biased in the first position.
A fluid delivery system, comprising:
- a cartridge comprising:
- a cartridge housing comprising a top portion, a side portion, and a bottom portion, wherein the cartridge housing is configured to retain a portion of a tubing through which a medication can flow from a medication source to a patient, wherein the tubing extends through the cartridge along the side portion;
- an infusion pump having a housing with a first opening and a hollow interior portion that is configured to receive the cartridge;
- a pump unit disposed within the housing and comprising a motor mechanically coupled with a crank shaft having a set of sheaves disposed on or connected to the crank shaft;
- wherein the pump unit further comprises a set of pistons and a set of tie rods, and wherein each of the pistons is coupled to the crank shaft by one of the tie rods, such that the tie rod can move with respect to the piston, and wherein each of the tie rods is coupled to one of the sheaves, such that the tie rod can move with respect to the sheave;
- and
- wherein when the cartridge is disposed within the hollow interior portion, at least a portion of the tubing that extends along the side portion of the cartridge is compressed by one or more of the pistons over time as the crank shaft rotates.
Dependencies are inferred from the claim text.