Patents by Inventor P. R. Samuel Suresh

P. R. Samuel Suresh 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).

  • Syringe Assembly Having Disabling Mechanism
    Publication number: 20100069840
    Abstract: A syringe assembly having passive disabling structure includes a barrel and a plunger rod assembly. The plunger rod assembly includes a plunger rod and a stopper connected by an indexing locking element. The number of strokes of the syringe plunger before the stopper is locked into the barrel rendering the syringe assembly unusable is determined by the number of detents on the plunger rod and stopper which engage the locking mechanism. Upon completion of the final delivery stroke, any attempt to withdraw the plunger rod from the barrel will cause the locking element to engage the barrel and trap the stopper in the barrel preventing further use of the syringe.
    Type: Application
    Filed: March 3, 2009
    Publication date: March 18, 2010
    Applicant: Becton, Dickinson and Company
    Inventors: P. R. Samuel Suresh, Chad Smith, Richard James Caizza
  • Syringe assembly having disabling mechanism
    Patent number: 7537582
    Abstract: A syringe assembly having passive disabling structure includes a barrel and a plunger rod assembly. The plunger rod assembly includes a plunger rod and a stopper connected by an indexing locking element. The number of strokes of the syringe plunger before the stopper is locked into the barrel rendering the syringe assembly unusable is determined by the number of detents on the plunger rod and stopper which engage the locking mechanism. Upon completion of the final delivery stroke, any attempt to withdraw the plunger rod from the barrel will cause the locking element to engage the barrel and trap the stopper in the barrel preventing further use of the syringe.
    Type: Grant
    Filed: January 24, 2008
    Date of Patent: May 26, 2009
    Assignee: Becton, Dickinson and Company
    Inventors: P. R. Samuel Suresh, Chad Smith, Richard James Caizza