System and Method for Syringe Fluid Fill Verification and Image Recognition of Power Injector System Features

Patent metadata

Field	Value
Publication number	US-2018296771-A1
Application number	US-201816012994-A
Country	US
Kind code	A1
Filing date	Jun 20, 2018
Priority date	Aug 28, 2015
Publication date	Oct 18, 2018
Grant date	—

Abstract

A fluid injection system and a fluid verification system for confirming that a syringe, containing a fluid for injection, is fully filled with fluid and neither has free space (i.e., air) near the distal end thereof when the syringe is provided in an upright position nor contains air bubbles. Imaging processing techniques and systems are also provided to determine various injection parameters and to verify the type and certain properties of fluid that is present within a syringe.

First claim

1 - 24 . (canceled)

25 . A fluid injection system comprising:
a fluid injector; at least one syringe operatively engaged with the fluid injector and configured to be illuminated with an electromagnetic radiation source to illuminate fluid contained therein; a sensor positioned to capture an image of the illuminated fluid; and at least one computing device in communication with the fluid injector and the sensor, the at least one computing device comprising at least one processor configured to:
obtain from the sensor the image of the illuminated fluid;
determine, based on the image of the illuminated fluid, at least one of: a type of the fluid contained within the at least one syringe; and whether air is contained within the at least one syringe; and
automatically display on a display device in communication with the at least one processor one of: an indication of the type of the fluid contained within the at least one syringe; and an indication that air is contained within the at least one syringe.

26 . The fluid injection system of claim 25 , wherein the at least one processor is configured to disable the fluid injector from conducting an injection procedure if air is determined to be contained within the at least one syringe.

27 . The fluid injection system of claim 25 , wherein brightness measurements performed in a region of interest in the image of the illuminated fluid are utilized to determine at least one of: the type of fluid contained within the at least one syringe; and whether air is contained within the at least one syringe.

28 . A fluid injection system comprising:
a fluid injector; a syringe operatively engaged with the fluid injector, the syringe comprising a barrel and defining an interior volume and at least one feature provided on the barrel of the syringe, the at least one feature having a different appearance when viewed through different types of fluid contained within the syringe; an image capture device positioned to capture an image of the at least one feature through a content of the syringe; and at least one computing device in communication with the fluid injector and the image capture device, the at least one computing device comprising at least one processor configured to:
obtain the image of the at least one feature through the fluid contained within the syringe;
determine, based on the image of the at least one feature, an appearance of the at least one feature;
compare the determined appearance with templates of appearances of the at least one feature when viewed through different types of fluids; and
automatically display on a display device in communication with the at least one processor an indication of a characteristic of the syringe based on the comparison.

29 . The fluid injection system of claim 28 , wherein the at least one feature is formed on the barrel of the syringe by at least one of printing, overmolding, and etching.

30 . The fluid injection system of claim 28 , wherein the at least one feature is a fluid dot, a line, a series of lines, or any combination thereof.

31 . The fluid injection system of claim 28 , wherein the appearance of the at least one feature comprises at least one of a shape of the at least one feature and an orientation of the at least one feature.

32 . The fluid injection system of claim 28 , wherein the characteristic of the syringe is presence of air in the syringe and the at least one processor is further configured to, if the determined appearance matches one of the templates of appearances of the at least one feature when viewed through air, provide an indication that air is present in the syringe and disable the fluid injector from conducting an injection procedure.

33 . The fluid injection system of claim 28 , wherein the characteristic of the syringe is the contents of the syringe.

34 . The fluid injection system of claim 33 , wherein the at least one processor is further configured to, if the determined appearance matches one of the templates of appearances of the at least one feature when viewed through a first fluid, provide an indication that the first fluid is present within the syringe.

35 . The fluid injection system of claim 34 , wherein the at least one processor is further configured to, if the determined appearance matches one of the templates of appearances of the at least one feature when viewed through a second fluid, provide an indication that the second fluid is present within the syringe.

Assignees

• Bayer Healthcare Llc

Inventors

• Cowan Kevin
• Spohn Michael
• Mcdermott Michael
• Grubic Herbert

Classifications

• A61M5/365 Primary

  Air detectors (A61M5/1684 takes precedence; in extracorporeal blood circuits A61M1/3626) · CPC title

• A61M5/445

  the media being heated in the reservoir, e.g. warming bloodbags · CPC title

• A61M5/1456

  with a replaceable reservoir comprising a piston rod to be moved into the reservoir, e.g. the piston rod is part of the removable reservoir · CPC title

• A61M2205/3362

  with minimised length of fluid lines; Taking into account the elastic expansion of fluid lines to increase accuracy · CPC title

• A61M5/31511

  Piston or piston-rod constructions, e.g. connection of piston with piston-rod (A61M5/5066 takes precedence) · CPC title