Carefusion 303, Inc.

Ivac Corporation

Alaris Medical Systems, Inc.

Cardinal Health 303, Inc.

Other

Rutgers, the State University of New Jersey

Ivac Medical Systems, Inc.

Carefusion 383, Inc.

Robert Dwaine Butterfield

Timothy W Vanderveen

Stephen A Martin

Allen B Farquhar

Robert Steven Vasko

Daniel M Abal

Cynthia Yamaga

Patricia West

Lisa Davis

Charles R Holdaway

Clifton Pait

Richard Crass

Joseph Condurso

Simon Morling

Kenneth J Pytel

Kevin Gregory Carothers

Erik Barnes

Richard Stor Wu

Gary M Drzewiecki

Brian Stock

Harry Dudley

Stephen Rosenthal

Stephen Bollish

David L Schlotterbeck

Melissa Strait

Lawrence J Farhat

Chris Jesse Zollinger

Gregory I Voss

Edward J Ciaccio

Denton Davis

Christine A Giurdanella-Renzi

Stanley J Boyer

Shannon Bailey

Nicholas Addiego

Donald Halbert

Gus G Tseo

Gail Dawn Baura

Charles E Clemens

Casper W Barnes

Heinz W Georgi

Neil Quitoviera

Houston Brown

Mark P Bloom

Andre Gamelin

William R Ewing

Kathleen M Jordan

Scott Hellen

Emmett B Anderson

Vaclav Barina

Allison Leigh Barry

Julie Chang

Oliver J Smith

Jeanette M Liu

Huy Quang Nguyen

Michelle Wei

Thendral Govindaraj

Deval Gupta

Daniel Brightwell

Monte K Fisher

Arthur Y Chang

Raul Sun Han Chang

Andrew L Marino

Emmet B Anderson

Samantha Hoang

Samuel A Derose

Stephen J Bollish

Raul Sun Chang

Lawrence Farhat

Robert Vasko

Daniel Abal

A system and method for monitoring a fluid delivery is disclosed. The system includes a processor and one or more sensors configured to measure one or more fluid state parameters associated with a fluid delivery channel through which a fluid is delivered to an infusion site of a patient. The processor receives fluid information for the fluid and at least one measured fluid state parameter from the sensor, determines at least one expected fluid state parameter for the infusion site based on the fluid information and patient information associated with the patient, and provides a communication at an output device when the at least one measured fluid state parameter deviates from the at least one expected fluid state parameter by more than a threshold deviation.

Model-based infusion site monitor

An infusion pump for detection of a fluid condition in a flexible tubing is provided. The infusion pump includes a sensor positioned to obtain a value of a tubing force when the tube is received by the infusion pump, a memory storing instructions and a processor. The processor is configured to execute the instructions to generate a force-time curve representative of values of the tubing force obtained by the sensor over time, determine a time-decaying parameter associated with the tubing force characterizing the force-time curve, and determine a fluid pressure value for a fluid in the tube based at least in part on the time-decaying parameter, a material of the tube, a dimension of the tube, and a use history of the tube. A method for using an infusion pump is also provided.

Occlusion detection for infusion pumps

A system for monitoring upstream flow characteristics for a pump is provided. The system may receive one or more outputs from a fluid level sensor coupled with a pump. The system may detect based on at least the one or more outputs, an abnormal upstream flow condition in the pump, such as a full upstream occlusion in the tube, a partial upstream occlusion in the tube, an empty reservoir, and/or a backflow of the fluid into the drip chamber. The system may adjust, based on the detection of an abnormal upstream flow condition in the pump, operation of the pump.

Monitoring upstream flow characteristics for a pump

A system including a tube and a force sensor coupled to a wall of the tube via a restraining element and configured to obtain a value of a tubing force when the tube is deformed by the restraining element. The system includes a processor to determine parameters for fitting a curve including the value of the tubing force, to determine a fluid pressure value for a fluid in the tube based on the parameters for fitting the curve, and to activate an alarm responsive to the fluid pressure value and to the parameters for fitting the curve when an occlusion condition is identified in the tube. The parameters for fitting the curve comprise at least one time-decaying parameter(s) associated to the tubing force. A method for using the system and a non-transitory computer readable medium including instructions to perform the above method are also provided.

A retrograde disposable intravenous (IV) set is disclosed. The IV set includes a diverter housing between upper and lower portions of a fluid line, the diverter housing including a lower end and an upper end extending away from the lower end and the fluid line to a syringe port located in the upper end, and a diverter member within the diverter housing and configured to move within the diverter housing from a first position, at which a first opening through the diverter member forms a first fluid pathway between the upper portion and the lower portion of the fluid line, to a second position, at which the first fluid pathway is blocked and a second fluid pathway is formed between the upper portion of the fluid line and a syringe port. Retrograde infusion may occur when the diverter member is in the second position.

Disposable intravenous (IV) set with flow control valve

A syringe pump can be operated to produce fluid flow from a syringe installed therein. Features of the pump can produce a desired rapid commencement of flow followed by smooth delivery uninterrupted by stiction-induced slowing and acceleration. A stiff drivetrain can facilitate detection of excessive forces indicative of friction at a stopper-wall interface. The motor drive, gearing, and control parameters can enable customized acceleration patterns to determine optimal initial stage advancement to provide fluid delivery. These patterns can minimize or eliminate the delay in commencement of flow by overcoming both mechanical slack remaining and syringe stopper slack. To avoid flow irregularities produced by stiction forces in the stopper further, a mechanical vibration can be provided to the syringe and/or barrel to introduce movement of the stopper-wall interface, reducing the creation of high static friction coefficients.

Syringe driver for infusion

A medication delivery monitoring device is disclosed. The device includes a user interface configured to receive input information, and a sensor configured to measure a plurality of fluid state parameters of a fluid delivery channel through which the medication is delivered by a vascular access device (VAD) to an infusion site region of the patient. The device also includes a processor configured to determine a state of the infusion site region based on the plurality of measured fluid state parameters and the input information, and an output device configured to provide a communication regarding the state of the infusion site region. Methods and computer-readable mediums for monitoring medication delivery are also disclosed.

A pumping segment having a low shut-off force is disclosed. The pumping segment includes a tube having an interior surface with at least two notches on opposite sides of the interior surface.

Low-force pumping segment

Systems and methods for determining the position of a fluid within a fluid source and infusion line coupled to an infusion flow control device are described herein. An exemplary system and method includes sampling fluid pressure upstream of an infusion pump, and calculating fluid pressure slope profiles. By sampling fluid pressure upstream of an infusion pump at discrete intervals and monitoring fluid pressure slope profiles, conditions of fluid flow, including unintentional fluid flow through an infusion line or a defective check valve in an infusion line, are detected, and fluid flow through an infusion pump is controlled.

Systems and methods for controlling an infusion pump

A device for managing fluid is provided. The device includes: a drip chamber including: an inlet; and outlet; a check valve positioned between the inlet and the outlet, the check valve configured for managing fluid flowing between the inlet and the outlet; and an elastic element. The combination of the check valve and the elastic element limits the extent to which the one way valve may be opened by brief transient pressures appearing at the outlet of the drip chamber. This limiting effect improves the accuracy of fluid delivery in setups such as 'piggyback' or Secondary Mode infusions of two fluids using a single pump.

Drip chamber

A pumping mechanism includes a plurality of peristaltic pumping actuators to compress adjacent portions of a first portion of an at least partially compressible pumping element having an inlet that is upstream of an outlet. The plurality of pumping actuators further reciprocate at a common drive frequency with a first phase offset between each adjacent pair of pumping actuators. The pumping mechanism also includes one compensation actuator to compress a second portion of the compressible pumping element disposed between the first portion and the outlet. The compensation actuator reciprocates at an optimal displacement and at a modulation frequency that is an integer multiple of the fundamental drive frequency and with a second phase offset between the compensation actuator and the adjacent pumping actuator.

System and method for improved flow uniformity in a peristaltic pump mechanism

Systems and methods are disclosed for controlling the flow of fluids in a fluid infusion system. The system may include first and second fluid containers, first and second tubes coupled to the first and second fluid containers, and an external valve coupled to the second tube and configured to be attached to the first tube. The valve may be configured to shape the first tube to form a valve region which is opened or closed by an actuating element in the valve that is driven by hydrostatic pressure from the second tube. A full second container may generate a pressure that is concentrated through a diaphragm onto a pin which presses on the shaped first tube region, closing it to allow only fluid from the second container to flow. When the fluid level in the second line falls reducing pressure, the pin's force reduces until the first tube is opened.

Fluid infusion systems and methods

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Poway, CA, United States of America

Robert Dwaine Butterfield