Patents by Inventor Paul D. Fielder

Paul D. Fielder 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: 10507316
    Abstract: An implantable fluid router is described that includes one or more inlets, one or more outlets and at least one gas vent for removing gas from liquid routed from the one or more inlets to the one or more outlets, The implantable router may be used with implantable drug delivery apparatus. A catheter device including such a fluid router is also described.
    Type: Grant
    Filed: February 11, 2011
    Date of Patent: December 17, 2019
    Assignee: RENISHAW (IRELAND) LIMITED
    Inventors: Paul D. Fielder, David E. Johnson, Maxwell R. Woolley
  • Patent number: 8827987
    Abstract: An implantable percutaneous fluid delivery device is described that includes a subcutaneous base portion having one or more ports for supplying fluid to one or more implanted catheter devices and a percutaneous portion including an extracorporeal surface. The one or more ports of the subcutaneous base portion are accessible from the extracorporeal surface of the percutaneous portion. The subcutaneous base portion is at least partially insertable into a complementary recess formed in a bone, the subcutaneous base portion including one or more features for gripping the internal surface of such a complementary recess thereby directly anchoring the subcutaneous base portion to the bone. The device may be used to route fluid to neurosurgical catheters optionally via a router unit.
    Type: Grant
    Filed: February 11, 2011
    Date of Patent: September 9, 2014
    Assignee: Renishaw (Ireland) Limited
    Inventors: Paul D. Fielder, Steven S. Gill, Trefor Owen Lewis, Andrew Samuel Vick
  • Publication number: 20120310182
    Abstract: An implantable fluid router is described that includes one or more inlets, one or more outlets and at least one gas vent for removing gas from liquid routed from the one or more inlets to the one or more outlets, The implantable router may be used with implantable drug delivery apparatus. A catheter device including such a fluid router is also described.
    Type: Application
    Filed: February 11, 2011
    Publication date: December 6, 2012
    Applicant: RENISHAW (IRELAND) LIMITED
    Inventors: Paul D. Fielder, David E. Johnson, Maxwell R. Woolley
  • Publication number: 20120302959
    Abstract: An implantable percutaneous fluid delivery device is described that includes a subcutaneous base portion having one or more ports for supplying fluid to one or more implanted catheter devices and a percutaneous portion including an extracorporeal surface. The one or more ports of the subcutaneous base portion are accessible from the extracorporeal surface of the percutaneous portion. The subcutaneous base portion is at least partially insertable into a complementary recess formed in a bone, the subcutaneous base portion including one or more features for gripping the internal surface of such a complementary recess thereby directly anchoring the subcutaneous base portion to the bone. The device may be used to route fluid to neurosurgical catheters optionally via a router unit.
    Type: Application
    Filed: February 11, 2011
    Publication date: November 29, 2012
    Applicant: RENISHAW (IRELAND) LIMITED
    Inventors: Paul D. Fielder, Stephen S. Gill, Trefor Owen Lewis, Andrew Samuel Vick
  • Patent number: 6428509
    Abstract: A syringe plunger driver system capable of engaging different sized syringes. A drive head includes a pushing surface as well as spaced-apart arms biased toward each other and toward the pushing surface. An activating lever moved to a first position moves the arms outward away from each other and forward toward the syringe barrel for ease in loading a syringe. Moving the lever to a second position permits the biasing devices connected to the arms to move the arms inward to capture the syringe plunger and then rearward to hold the plunger flange against the pushing surface to resist siphoning.
    Type: Grant
    Filed: July 29, 1999
    Date of Patent: August 6, 2002
    Assignee: ALARIS Medical Systems, Inc.
    Inventor: Paul D. Fielder