John Volkar from Slickville, PA

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Location:

Greater Pittsburgh Area

Industry:

Medical Devices

Fluid Injector System, Method Of Preventing Fluid Backflow, And Computer Program Product
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US Patent:

20210220556, Jul 22, 2021
Filed:

Aug 27, 2019
Appl. No.:

17/270531
Inventors:

- WHIPPANY NJ, US
William Barone - Pittsburgh PA, US
John Volkar - Valencia PA, US
International Classification:

A61M 5/168
A61M 5/142
Abstract:

A fluid injector system includes a control device operatively associated with each of two or more drive components configured to pressurize and inject a first fluid from a first fluid reservoir through a fluid conduit, and at least a second fluid from a second fluid reservoir through the fluid conduit. The fluid conduit is in selective fluid communication with the first and second fluid reservoirs. The control device has at least one processor 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.

System And Method For Air Detection In Fluid Injector
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US Patent:

20210146063, May 20, 2021
Filed:

Apr 18, 2019
Appl. No.:

17/048219
Inventors:

- WHIPPANY NJ, US
WILLIAM BARONE - PITTSBURGH PA, US
BARRY IDDON - JEANNETTE PA, US
JOHN VOLKAR - VALENCIA PA, US
International Classification:

A61M 5/36
A61M 5/00
A61M 5/31
Abstract:

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.

Method For Dynamic Pressure Control In A Fluid Injector System
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US Patent:

20200114074, Apr 16, 2020
Filed:

Aug 28, 2018
Appl. No.:

16/621289
Inventors:

- WHIPPANY NJ, US
MICHAEL SPOHN - FENELTON PA, US
CHELSEA MARSH - PITTSBURGH PA, US
MICHAEL MCDERMOTT - PITTSBURGH PA, US
JOHN VOLKAR - VALENCIA PA, US
International Classification:

A61M 5/168
A61M 5/00
A61M 5/14
A61M 5/145
Abstract:

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.

John Volkar