Patents by Inventor Andrew J. McGregor

Andrew J. McGregor has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7983540
    Abstract: A heat exchanger has a laminar fluid flow path receivable between the heating plates of a high flow rate infusion unit to which heat is conducted by contact with the heating plates. A bubble trap and a valve are integrated with the heat exchanger. The bubble trap collects air from the infusate exiting the laminar flow path, and includes an air vent in contact with the infusate that vents the air from the bubble trap. The valve shuts off the flow of infusate if air is detected in the bubble trap.
    Type: Grant
    Filed: March 11, 2010
    Date of Patent: July 19, 2011
    Assignee: Arizant Healthcare Inc.
    Inventors: Randall C. Arnold, Mark T. Bieberich, Gary L. Hansen, Andrew J. McGregor, Christopher A. Miller, Donald E. Stapf
  • Patent number: 7927302
    Abstract: A high flow rate infusion unit includes a heating unit with opposing, electrically-operated heating plates that contact a heat exchanger to heat infusate flowing therethrough. Pressure infusers on the infusion unit are operable to provide infusate at a high flow rate. A flat, elongate heat exchanger has a laminar fluid flow path receivable between the heating plates to which heat is conducted by contact with the heating plates. A bubble trap and a valve are disposed within the heat exchanger. The bubble trap collects bubbles and vents air from infusate exiting the fluid flow path, and the valve shuts off the flow of infusate if the volume of air in the bubble trap exceeds a predefined limit.
    Type: Grant
    Filed: April 24, 2007
    Date of Patent: April 19, 2011
    Assignee: Arizant Healthcare Inc.
    Inventors: Randall C. Arnold, Mark T. Bieberich, Melanie L. Hall, Gary L. Hansen, Andrew J. McGregor, Christopher A. Miller, Dirk Ahlgrim, Timothy R. Proulx
  • Publication number: 20110022134
    Abstract: An underbody convective warming blanket includes a duct that is separate from, but in fluid communication with, interior space of the underbody convective warming blanket. The duct may be deployed to provide an air circulation conduit to shunt air around the air distribution structure in the interior space. The duct may be a flexible tube having a first end coupled to a first duct port in the underbody convective warming blanket near a first end of the underbody convective warming blanket and a second end to be coupled to a second duct port in the underbody convective warming blanket near a second end of the underbody convective warming blanket. An underbody convective warming blanket may include a midsection with an elongate columnar configuration which transitions at an end, or at each end, to a plinth-like configuration.
    Type: Application
    Filed: July 27, 2009
    Publication date: January 27, 2011
    Applicant: Arizant Healthcare Inc.
    Inventors: Thomas P. Anderson, Andrew J. McGregor, Mark J. Scott
  • Publication number: 20100300293
    Abstract: A bubble trap for separating and collecting air and bubbles from a high flow rate stream of infusate includes multiple flow chambers to collect air, a sensor support mounted to one of the chambers, an air vent disposed in one of the chambers, and a valve in fluid communication with the chambers to control the flow of infusate therethrough.
    Type: Application
    Filed: July 29, 2010
    Publication date: December 2, 2010
    Applicant: Arizant Healthcare Inc.
    Inventors: Randall C. Arnold, Mark T. Bieberich, Gary L. Hansen, Andrew J. McGregor, Christopher A. Miller
  • Patent number: 7803217
    Abstract: A bubble trap for separating and collecting air and bubbles from a high flow rate stream of infusate includes multiple flow chambers to collect air, a sensor support mounted to one of the chambers, an air vent disposed in one of the chambers, and a valve in fluid communication with the chambers to control the flow of infusate therethrough.
    Type: Grant
    Filed: April 24, 2007
    Date of Patent: September 28, 2010
    Assignee: Arizant Healthcare, Inc.
    Inventors: Randall C. Arnold, Mark T. Bieberich, Gary L. Hansen, Andrew J. McGregor, Christopher A. Miller
  • Publication number: 20100222737
    Abstract: A high flow rate infusion unit includes a heating unit with opposing, electrically-operated heating plates that contact a heat exchanger to heat infusate flowing therethrough. Pressure infusers on the infusion unit are operable to provide infusate at a high flow rate. A flat, elongate heat exchanger has a laminar fluid flow path receivable between the heating plates to which heat is conducted by contact with the heating plates. A bubble trap and a valve are disposed within the heat exchanger. The bubble trap collects bubbles and vents air from infusate exiting the fluid flow path, and the valve shuts off the flow of infusate if the volume of air in the bubble trap exceeds a predefined limit.
    Type: Application
    Filed: April 16, 2010
    Publication date: September 2, 2010
    Applicant: Arizant Healthcare Inc.
    Inventors: Randall C. Arnold, Mark T. Bieberich, Melanie L. Hall, Gary L. Hansen, Andrew J. McGregor, Christopher A. Miller, Dirk Ahlgrim, Timothy R. Proulx
  • Publication number: 20100185149
    Abstract: A heat exchanger has a laminar fluid flow path receivable between the heating plates of a high flow rate infusion unit to which heat is conducted by contact with the heating plates. A bubble trap and a valve are integrated with the heat exchanger. The bubble trap collects air from the infusate exiting the laminar flow path, and includes an air vent in contact with the infusate that vents the air from the bubble trap. The valve shuts off the flow of infusate if air is detected in the bubble trap.
    Type: Application
    Filed: March 11, 2010
    Publication date: July 22, 2010
    Applicant: Arizant Healthcare Inc.
    Inventors: Randall C. Arnold, Mark T. Bieberich, Gary L. Hansen, Andrew J. McGregor, Christopher A. Miller, Donald E. Stapf
  • Publication number: 20100179624
    Abstract: A warming device includes a poncho-type patient gown having a major body portion with inside and outside surfaces, a central panel in the major body portion, opposing sleeve portions in the central panel, and a head opening in the central panel, between the sleeve portions. An inflatable convective warming apparatus is supported on a surface of the patient gown, extending from a lower edge of the patient gown at least to the head opening.
    Type: Application
    Filed: December 21, 2009
    Publication date: July 15, 2010
    Applicant: Arizant Healthcare Inc.
    Inventors: Thomas P. Anderson, Jared J. Balthazor, Paul T. Kennedy, Andrew J. McGregor, Christopher A. Miller, Mark A. Poppen
  • Patent number: 7720362
    Abstract: A heat exchanger has a laminar fluid flow path receivable between the heating plates of a high flow rate infusion unit to which heat is conducted by contact with the heating plates. A bubble trap and a valve are integrated with the heat exchanger. The bubble trap collects air from the infusate exiting the laminar flow path, and includes an air vent in contact with the infusate that vents the air from the bubble trap. The valve shuts off the flow of infusate if air is detected in the bubble trap.
    Type: Grant
    Filed: April 24, 2007
    Date of Patent: May 18, 2010
    Assignee: Arizant Healthcare Inc.
    Inventors: Randall C. Arnold, Mark T. Bieberich, Gary L. Hansen, Andrew J. McGregor, Christopher A. Miller, Donald E. Stapf
  • Publication number: 20080269679
    Abstract: A bubble trap for separating and collecting air and bubbles from a high flow rate stream of infusate includes multiple flow chambers to collect air, a sensor support mounted to one of the chambers, an air vent disposed in one of the chambers, and a valve in fluid communication with the chambers to control the flow of infusate therethrough.
    Type: Application
    Filed: April 24, 2007
    Publication date: October 30, 2008
    Applicant: Arizant Healthcare Inc.
    Inventors: Randall C. Arnold, Mark T. Bieberich, Gary L. Hansen, Andrew J. McGregor, Christopher A. Miller
  • Publication number: 20080269663
    Abstract: A high flow rate infusion unit includes a heating unit with opposing, electrically-operated heating plates that contact a heat exchanger to heat infusate flowing therethrough. Pressure infusers on the infusion unit are operable to provide infusate at a high flow rate. A flat, elongate heat exchanger has a laminar fluid flow path receivable between the heating plates to which heat is conducted by contact with the heating plates. A bubble trap and a valve are disposed within the heat exchanger. The bubble trap collects bubbles and vents air from infusate exiting the fluid flow path, and the valve shuts off the flow of infusate if the volume of air in the bubble trap exceeds a predefined limit.
    Type: Application
    Filed: April 24, 2007
    Publication date: October 30, 2008
    Applicant: Arizant Healthcare Inc.
    Inventors: Randall C. Arnold, Mark T. Bieberich, Melanie L. Hall, Gary L. Hansen, Andrew J. McGregor, Christopher A. Miller, Dirk Ahlgrim, Timothy R. Proulx
  • Publication number: 20080267599
    Abstract: A heat exchanger has a laminar fluid flow path receivable between the heating plates of a high flow rate infusion unit to which heat is conducted by contact with the heating plates. A bubble trap and a valve are integrated with the heat exchanger. The bubble trap collects air from the infusate exiting the laminar flow path, and includes an air vent in contact with the infusate that vents the air from the bubble trap. The valve shuts off the flow of infusate if air is detected in the bubble trap.
    Type: Application
    Filed: April 24, 2007
    Publication date: October 30, 2008
    Applicant: Arizant Healthcare Inc.
    Inventors: Randall C. Arnold, Mark T. Bieberich, Gary L. Hansen, Andrew J. McGregor, Christopher A. Miller, Donald E. Stapf
  • Publication number: 20080269676
    Abstract: An infusion unit includes a heating unit with opposed heating plates. A heat exchanger has a fluid flow path receivable between the heating plates to which heat is conducted by contact with the heating plates. Infusate flowing under pressure through the fluid flow path is heated by conduction from the heating plates through the fluid container. When the flow of infusate is stopped or interrupted, infusate trapped in the heat exchanger is displaced to a reservoir in the heat exchanger. Displacement of the trapped infusate reduces friction between the fluid container and the heating plates, which assists in extraction of the heat exchanger from the heating unit.
    Type: Application
    Filed: April 22, 2008
    Publication date: October 30, 2008
    Applicant: Arizant Healthcare Inc.
    Inventors: Mark T. Bieberich, Melanie L. Collins, Gary L. Hansen, Andrew J. McGregor, Christopher A. Miller, Donald E. Stapf, Winston T. Tan