Bayer Healthcare LLC

William Barone

Michael A Spohn

Michael Donald McDermott

Chelsea Marsh

Vince Delbrugge

Kevin P Cowan

John Volkar

Arthur E Uber, Iii

David M Griffiths

Ralph H Schriver

Michael McDermott

Timothy Newing

Randy Lee

Michael J Swantner

Barry Tucker

Christopher David Capone

Barry Iddon

Patrick Campbell

Charles Lang

Richard Morton

Christopher Scutt

Ronald Heller

Matthew Schrauder

Amy Chaya

Han Min Thu

Andrew Naples

Curtis Pastor

Shahab Taheri

Michael Mcdermott

Mikayla Ferchaw

Robert Praniewicz

David Coleman

Jee Hoon Yoo

Corey Savannah

Edden Rabin

A fluid injector system includes a control device operatively associated with a first drive component configured to pressurize and inject a first fluid and a second drive component configured to pressurize and inject a second fluid. The control device includes at least one processor programmed or configured to: during a first phase of a multi-phase injection protocol, actuate at least the first drive component to inject the first fluid; during the first phase of the multi-phase injection protocol and prior to transitioning to a second phase of the multi-phase injection protocol, actuate the second drive component to pressurize the second fluid relative to a pressure of the first fluid; and during the second phase of the multi-phase injection protocol, actuate the second drive component to inject at least the second fluid so that a desired steady-state ratio of the first fluid and the second fluid in the second phase is reached.

Fluid injector system with improved ratio performance

An injector system for delivering a medical fluid may include at least one syringe defining a reservoir operatively connected to a piston; and at least one processor programmed or configured to, based on an air check protocol for detecting air in the reservoir, determine a baseline value comprising baseline compressibility data for the at least one syringe of the injector system, deliver the first amount of the medical fluid from the reservoir; refill the reservoir with a second amount of the medical fluid; based on the air check protocol, perform an air check pressurization sequence by gathering air check compressibility data for the at least one syringe of the injector system; and based on the air check protocol, compare the air check compressibility data with the baseline compressibility data to determine a volume of air present in the reservoir.

System and method for air detection in fluid injector

A fluid injector system includes at least one injector for pressurizing and delivering at least one fluid from at least one fluid reservoir, at least one fluid path section providing fluid communication between a bulk fluid reservoir and a syringe connected to the at least one injector, and at least one sensor arranged along the at least one fluid path section. The at least one sensor includes an emitter configured to emit light through the at least one fluid path section, and a detector configured to receive the light emitted through the at least one fluid path section and generate an electrical signal based on at least one property of the received light. The fluid injector system may further include at least one processor programmed or configured to determine, based on the electrical signal generated by the detector, at least one of an identity of the at least one fluid present in the fluid path section, a concentration of the at least one fluid in the fluid path section, and at least one property of the fluid path section.

System and method for detecting fluid type in tubing for fluid injector apparatus

A system and method for correcting a volume of fluid delivered by a fluid injector during an injection procedure is described. The method included determining and compensating for a volume factor associated with compliance of the fluid injector system and correcting for the volume by one of over-driving the distance that the drive member travels in a fluid reservoir, under-driving the distance that the drive member travels in the fluid reservoir, or lengthening or shortening a fluid delivery time.

Fluid injector system volume compensation system and method

A fluid injector system and method for preventing pressurized backflow of a second fluid into a first reservoir containing a fluid is described. The fluid injector system includes a control device programmed or configured to actuate a second drive component to pressurize and inject the second fluid through the fluid conduit, and while the second drive component is actuated, actuate a first drive component to introduce intermittent pulses of the first fluid to create a flow front interface between the first fluid and the second fluid in the fluid conduit to prevent backflow of the second fluid through the fluid conduit into the first fluid reservoir.

Fluid injector system, method of preventing fluid backflow, and computer program product

A system, method, and computer program product are disclosed for a flow rate algorithm that utilizes changes in fluid pressure over a set time interval to calculate a true flow rate compared to a programmed flow rate, determine any over-delivery or un-der-delivery in the amount of fluid delivered over the set time interval, compensate for any determined over-delivery or under-delivery in the fluid flow rate over a subsequent set time interval, and repeat the flow rate algorithm for a series of subsequent set time intervals over the duration of a fluid injection procedure.

System and method for fluid delivery using pressure-based motor control for fluid injector devices

A fluid injector system for delivering a multi-phase fluid injection to a patient and methods of fluid delivery is disclosed. Methods of creating and using a multi-aspect fluid path impedance model of the injector system are used. Modeling and adjustment of factors that affect impedance and prevent or reduce backflow, reduce the likelihood of fluid flow rate spikes and provide more accurate flow rates and mixing ratios of fluids may be repeated or happen essentially continuously during an injection. The adjustments may be determined before the injection or determined and/or adjusted during the injection. The determination may include sensor feedback commonly used in injectors such as pressure and position feedback as well as other sensors. In all cases, the user can be notified of adjustments through on-screen notices and/or through the recordation of the injection data by a control device of the injector at the conclusion of the injection.

Fluid path impedance assessment for improving fluid delivery performance

The present disclosure provides improved methods for calibrating the zero position of at least one drive member of an injector system is disclosed. Automated methods of position calibration of the drive member of a fluid injector are disclosed. These methods address sources of error in positional accuracy and fluid delivery inaccuracies, such as disposable syringe tolerance and injector wear over time. According to other embodiments of the present disclosure, methods and fluid injector systems for determining and correcting for the amount of slack in a fluid injection apparatus are described. An understanding of the calibration and the amount of slack in a fluid injection system allows a processor to correct for the slack, thereby ensuring more accurate fluid delivery to the patient and more accurate imaging processes.

System and method for drive member position and fluid injector system mechanical calibration

A method for dynamic pressure control during a multiphase injection is described wherein the pressures of fluids in the various reservoirs of a fluid delivery system are controlled to provide desired fluid delivery parameters. The methods include advancing the first drive member to expel the first fluid from the first reservoir into a conduit, wherein the fluid is pressurized to a first fluid pressure; measuring the first fluid pressure to provide a target value; while the second reservoir is in fluid isolation from the conduit, advancing or retracting the second drive member to increase or decrease the fluid pressure of the second fluid in the second reservoir to the target value; placing the second reservoir in fluid communication with the conduit; and advancing the second drive member to expel the second fluid from the second reservoir into the conduit.

Method for dynamic pressure control in a fluid injector system

A calibration system for calibrating a pressure output of a fluid injector having a housing configured for connecting to the fluid injector; a drive member engagement portion configured for contacting a drive member of the fluid injector; a compressible member, which may have a known modulus of compression, connected at its proximal end to the drive member engagement portion, wherein the compressible member is compressed with movement of the drive member of the fluid injector between a first, uncompressed position and a second, at least partially compressed position of the fluid injector in a distal direction; and a sensor connected to the compressible member is described. The sensor is configured for measuring at least one of a force imparted by the drive member and a displacement of the drive member when the compressible member is in the second, at least partially compressed position. The system may generate a calibration curve for the drive member of the fluid injector and allow the generation of a fault condition. Methods for calibrating a fluid injector are also described.

Injector pressure calibration system and method

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Pittsburgh, PA, United States of America

William Barone