Patents by Inventor James G. J. Shearn

James G. J. Shearn 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).

  • Directly engaged syringe driver system
    Patent number: 7972306
    Abstract: A syringe driver system comprises a rotatable threaded lead screw shaft and a plunger which directly engages the threaded shaft such that rotation of the shaft drives the plunger into the syringe body. The plunger is formed with a threaded shaft engaging portion in the form of a half nut to engage with and follow the threaded shaft. The syringe driver system further comprises a guide system to secure the plunger in direct engagement with the threaded shaft and to prevent rotation of the plunger. An arm of the plunger stem carries markers useful in determining the near end of infusion. The syringe body carries a marker or markers useful in determining a characteristic about the syringe, such as its volume.
    Type: Grant
    Filed: March 4, 2008
    Date of Patent: July 5, 2011
    Assignee: CareFusion 303, Inc.
    Inventor: James G. J. Shearn
  • DIRECTLY ENGAGED SYRINGE DRIVER SYSTEM
    Publication number: 20080154203
    Abstract: A syringe driver system comprises a rotatable threaded lead screw shaft and a plunger which directly engages the threaded shaft such that rotation of the shaft drives the plunger into the syringe body. The plunger is formed with a threaded shaft engaging portion in the form of a half nut to engage with and follow the threaded shaft. The syringe driver system further comprises a guide system to secure the plunger in direct engagement with the threaded shaft and to prevent rotation of the plunger. An arm of the plunger stem carries markers useful in determining the near end of infusion. The syringe body carries a marker or markers useful in determining a characteristic about the syringe, such as its volume.
    Type: Application
    Filed: March 4, 2008
    Publication date: June 26, 2008
    Applicant: Cardinal Health 303, Inc.
    Inventor: James G. J. Shearn
  • Directly engaged syringe driver system
    Patent number: 7338472
    Abstract: A syringe driver system comprises a rotatable threaded lead screw shaft and a plunger which directly engages the threaded shaft such that rotation of the shaft drives the plunger into the syringe body. The plunger is formed with a threaded shaft engaging portion in the form of a half nut to engage with and follow the threaded shaft. The syringe driver system further comprises a guide system to secure the plunger in direct engagement with the threaded shaft and to prevent rotation of the plunger. An arm of the plunger stem carries markers useful in determining the near end of infusion. The syringe body carries a marker or markers useful in determining a characteristic about the syringe, such as its volume.
    Type: Grant
    Filed: September 9, 2003
    Date of Patent: March 4, 2008
    Assignee: Cardinal Health 303, Inc.
    Inventor: James G. J. Shearn
  • Directly engaged syringe driver system
    Publication number: 20040049161
    Abstract: A syringe driver system comprises a rotatable threaded lead screw shaft and a plunger which directly engages the threaded shaft such that rotation of the shaft drives the plunger into the syringe body. The plunger is formed with a threaded shaft engaging portion in the form of a half nut to engage with and follow the threaded shaft. The syringe driver system further comprises a guide system to secure the plunger in direct engagement with the threaded shaft and to prevent rotation of the plunger. An arm of the plunger stem carries markers useful in determining the near end of infusion. The syringe body carries a marker or markers useful in determining a characteristic about the syringe, such as its volume.
    Type: Application
    Filed: September 9, 2003
    Publication date: March 11, 2004
    Inventor: James G. J. Shearn
  • Directly engaged syringe driver system
    Patent number: 6645177
    Abstract: A syringe driver system comprises a rotatable threaded lead screw shaft and a plunger which directly engages the threaded shaft such that rotation of the shaft drives the plunger into the syringe body. The plunger is formed with a threaded shaft engaging portion in the form of a half nut to engage with and follow the threaded shaft. The syringe driver system further comprises a guide system to secure the plunger in direct engagement with the threaded shaft and to prevent rotation of the plunger. An arm of the plunger stem carries markers useful in determining the near end of infusion. The syringe body carries a marker or markers useful in determining a characteristic about the syringe, such as its volume.
    Type: Grant
    Filed: February 9, 1999
    Date of Patent: November 11, 2003
    Assignee: Alaris Medical Systems, Inc.
    Inventor: James G. J. Shearn