Patents by Inventor Sriram Venkataramani

Sriram Venkataramani 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).

  • Publication number: 20230399454
    Abstract: A catheter can include an extruded shaft that includes a lumen extending from a proximal end to a distal end and a sidewall that defines at least a portion of the lumen, the sidewall includes a siliconized polycarbonate polyurethane of a specified formulation. Due to the formulation, the sidewall can be alcohol resistant, which can, in some instances, permit alcohol locking of the catheter.
    Type: Application
    Filed: August 24, 2023
    Publication date: December 14, 2023
    Applicant: Piper Access, LLC
    Inventors: Jay Allen Muse, Nathaniel J. Fredin, Sriram Venkataramani
  • Patent number: 11746181
    Abstract: An alcohol-resistant siliconized polycarbonate polyurethane can include a soft segment and a hard segment. The soft segment can include a polycarbonate polyol and a polysiloxane, which can be present in an amount less than the polycarbonate polyol. The hard segment can include an isocyanate and a chain extender. Peripherally inserted central catheter (PICC) devices can include one or more components that are at least partially formed from one or more formulations of the siliconized polycarbonate polyurethane catheter. The PICC devices can withstand alcohol locking, and can be power injectable both before and after alcohol locking events.
    Type: Grant
    Filed: November 19, 2018
    Date of Patent: September 5, 2023
    Assignee: Piper Access, LLC
    Inventors: Jay Allen Muse, Nathaniel J. Fredin, Sriram Venkataramani
  • Patent number: 10730994
    Abstract: The present invention provides silicon-based polycarbonates, processes for their preparation and their use in the synthesis of copolymers, in particular segmented copolymers such as polyurethanes for biomedical applications.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: August 4, 2020
    Assignee: Aortech International plc
    Inventors: Francis P. Maguire, Sriram Venkataramani
  • Patent number: 10655012
    Abstract: The present invention provides silicon-based polycarbonates, processes for their preparation and their use in the synthesis of copolymers, in particular segmented copolymers such as polyurethanes for biomedical applications.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: May 19, 2020
    Assignee: Aortech International plc
    Inventors: Francis P. Maguire, Sriram Venkataramani
  • Patent number: 10597497
    Abstract: The present invention relates to biostable gel comprising: (a) at least one silicon-containing polyol, polyamine, polyepoxy or polyisocyanate having 1 or more functional groups and a molecular weight of at least 20,000 which is cured in the presence of: (b) at least one diol, diamine or diisocyanate having a molecular weight of less than 10,000; and/or (c) an initiator, processes for their preparation and their use in the manufacture and repair of biomaterials and medical devices, articles or implants, in particular the manufacture of a soft tissue implant such as breast implants and the repair of orthopaedic joints such as spinal discs.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: March 24, 2020
    Assignee: Aortech International plc
    Inventors: Mansour Mehrabi, Sriram Venkataramani, Mark Bown, Ajay D. Padsalgikar, Ramasri Mudumba
  • Publication number: 20200032055
    Abstract: The present invention provides silicon-based polycarbonates, processes for their preparation and their use in the synthesis of copolymers, in particular segmented copolymers such as polyurethanes for biomedical applications.
    Type: Application
    Filed: June 8, 2016
    Publication date: January 30, 2020
    Inventors: Francis P. Maguire, Sriram Venkataramani
  • Publication number: 20190153147
    Abstract: An alcohol-resistant siliconized polycarbonate polyurethane can include a soft segment and a hard segment. The soft segment can include a polycarbonate polyol and a polysiloxane, which can be present in an amount less than the polycarbonate polyol. The hard segment can include an isocyanate and a chain extender. Peripherally inserted central catheter (PICC) devices can include one or more components that are at least partially formed from one or more formulations of the siliconized polycarbonate polyurethane catheter. The PICC devices can withstand alcohol locking, and can be power injectable both before and after alcohol locking events.
    Type: Application
    Filed: November 19, 2018
    Publication date: May 23, 2019
    Inventors: Jay Allen Muse, Nathaniel J. Fredin, Sriram Venkataramani
  • Publication number: 20190071543
    Abstract: The present invention relates to biostable gel comprising: (a) at least one silicon-containing polyol, polyamine, polyepoxy or polyisocyanate having 1 or more functional groups and a molecular weight of at least 20,000 which is cured in the presence of: (b) at least one diol, diamine or diisocyanate having a molecular weight of less than 10,000; and/or (c) an initiator, processes for their preparation and their use in the manufacture and repair of biomaterials and medical devices, articles or implants, in particular the manufacture of a soft tissue implant such as breast implants and the repair of orthopaedic joints such as spinal discs.
    Type: Application
    Filed: August 6, 2018
    Publication date: March 7, 2019
    Inventors: Mansour Mehrabi, Sriram Venkataramani, Mark Bown, Ajay D. Padsalgikar, Ramasri Mudumba
  • Patent number: 10059807
    Abstract: The present invention relates to biostable gel comprising: (a) at least one silicon-containing polyol, polyamine, polyepoxy or polyisocyanate having 1 or more functional groups and a molecular weight of at least 20,000 which is cured in the presence of: (b) at least one diol, diamine or diisocyanate having a molecular weight of less than 10,000; and/or (c) an initiator, processes for their preparation and their use in the manufacture and repair of biomaterials and medical devices, articles or implants, in particular the manufacture of a soft tissue implant such as breast implants and the repair of orthopedic joints such as spinal discs.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: August 28, 2018
    Assignee: Aortech International plc
    Inventors: Mansour Mehrabi, Sriram Venkataramani, Mark Bown, Ajay D. Padsalgikar, Ramasri Mudumba
  • Publication number: 20180179324
    Abstract: The present invention provides silicon-based polycarbonates, processes for their preparation and their use in the synthesis of copolymers, in particular segmented copolymers such as polyurethanes for biomedical applications.
    Type: Application
    Filed: June 8, 2016
    Publication date: June 28, 2018
    Inventors: Francis P. Maguire, Sriram Venkataramani
  • Patent number: 9765191
    Abstract: The present invention relates to biostable gel comprising: (a) at least one silicon-containing polyol, polyamine, polyepoxy or polyisocyanate having 1 or more functional groups and a molecular weight of at least 20,000 which is cured in the presence of: (b) at least one diol, diamine or diisocyanate having a molecular weight of less than 10,000; and/or (c) an initiator, processes for their preparation and their use in the manufacture and repair of biomaterials and medical devices, articles or implants, in particular the manufacture of a soft tissue implant such as breast implants and the repair of orthopaedic joints such as spinal discs.
    Type: Grant
    Filed: January 6, 2014
    Date of Patent: September 19, 2017
    Assignee: Aortech International plc
    Inventors: Mansour Mehrabi, Sriram Venkataramani, Mark Bown, Ajay D. Padsalgikar, Ramasri Mudumba
  • Publication number: 20170121464
    Abstract: The present invention relates to biostable gel comprising: (a) at least one silicon-containing polyol, polyamine, polyepoxy or polyisocyanate having 1 or more functional groups and a molecular weight of at least 20,000 which is cured in the presence of: (b) at least one diol, diamine or diisocyanate having a molecular weight of less than 10,000; and/or (c) an initiator, processes for their preparation and their use in the manufacture and repair of biomaterials and medical devices, articles or implants, in particular the manufacture of a soft tissue implant such as breast implants and the repair of orthopaedic joints such as spinal discs.
    Type: Application
    Filed: July 7, 2016
    Publication date: May 4, 2017
    Inventors: Mansour Mehrabi, Sriram Venkataramani, Mark Bown, Ajay D. Padsalgikar, Ramasri Mudumba
  • Publication number: 20170114187
    Abstract: The present invention relates to biostable gel comprising: (a) at least one silicon-containing polyol, polyamine, polyepoxy or polyisocyanate having 1 or more functional groups and a molecular weight of at least 20,000 which is cured in the presence of: (b) at least one diol, diamine or diisocyanate having a molecular weight of less than 10,000; and/or (c) an initiator, processes for their preparation and their use in the manufacture and repair of biomaterials and medical devices, articles or implants, in particular the manufacture of a soft tissue implant such as breast implants and the repair of orthopaedic joints such as spinal discs.
    Type: Application
    Filed: January 6, 2014
    Publication date: April 27, 2017
    Applicant: Aortech International plc
    Inventors: Mansour Mehrabi, Sriram Venkataramani, Mark Bown, Ajay D. Padsalgikar, Ramasri Mudumba
  • Patent number: 8882832
    Abstract: The invention relates to an implantable prosthesis and a shell for an implantable prosthesis and methods for making them, in particular a light weight implantable prosthesis containing a biocompatible filler which is suitable for use as a breast implant.
    Type: Grant
    Filed: July 25, 2012
    Date of Patent: November 11, 2014
    Assignee: Aortech International plc
    Inventors: Ajay D. Padsalgikar, Frank Maguire, Sriram Venkataramani
  • Publication number: 20140323676
    Abstract: The present invention relates to biostable gel comprising: (a) at least one silicon-containing polyol, polyamine, polyepoxy or polyisocyanate having 1 or more functional groups and a molecular weight of at least 20,000 which is cured in the presence of: (b) at least one diol, diamine or diisocyanate having a molecular weight of less than 10,000; and/or (c) an initiator, processes for their preparation and their use in the manufacture and repair of biomaterials and medical devices, articles or implants, in particular the manufacture of a soft tissue implant such as breast implants and the repair of orthopaedic joints such as spinal discs.
    Type: Application
    Filed: January 6, 2014
    Publication date: October 30, 2014
    Applicant: Aortech International plc
    Inventors: Mansour Mehrabi, Sriram Venkataramani, Mark Bown, Ajay D. Padsalgikar, Ramasri Mudumba
  • Patent number: 8623986
    Abstract: The present invention relates to biostable gel comprising: (a) at least one silicon-containing polyol, polyamine, polyepoxy or polyisocyanate having 1 or more functional groups and a molecular weight of at least 20,000 which is cured in the presence of: (b) at least one diol, diamine or diisocyanate having a molecular weight of less than 10,000; and/or (c) an initiator, processes for their preparation and their use in the manufacture and repair of biomaterials and medical devices, articles or implants, in particular the manufacture of a soft tissue implant such as breast implants and the repair of orthopaedic joints such as spinal discs.
    Type: Grant
    Filed: April 19, 2007
    Date of Patent: January 7, 2014
    Assignee: Aertech International plc
    Inventors: Mansour Mehrabi, Sriram Venkataramani, Mark Bown, Ajay Padsalgikar
  • Patent number: 8207245
    Abstract: The present invention relates to silicon-containing biostable gels and processes for their preparation. The gels possess properties which make them useful in the manufacture and repair of biomaterials and medical devices, articles or implants, in particular the manufacture of soft tissue implants such as breast implants and the repair of orthopaedic joints such as spinal discs.
    Type: Grant
    Filed: September 28, 2005
    Date of Patent: June 26, 2012
    Assignee: Aortech International plc
    Inventors: Ajay Padsalgikar, Trang Thanh Nhan, Sriram Venkataramani, Mansour Mehrabi, Mark Bown
  • Publication number: 20100029802
    Abstract: The present invention relates to biostable gel comprising: (a) at least one silicon-containing polyol, polyamine, polyepoxy or polyisocyanate having 1 or more functional groups and a molecular weight of at least 20,000 which is cured in the presence of: (b) at least one diol, diamine or diisocyanate having a molecular weight of less than 10,000; and/or (c) an initiator, processes for their preparation and their use in the manufacture and repair of biomaterials and medical devices, articles or implants, in particular the manufacture of asoft tissue implant such as breast implants and the repair of orthopaedic joints such as spinal discs.
    Type: Application
    Filed: April 19, 2007
    Publication date: February 4, 2010
    Inventors: Mansour Mehrabi, Sriram Venkataramani, Mark Bown, Ajay Padsalgikar
  • Publication number: 20080293844
    Abstract: The present invention relates to silicon-containing biostable gels and processes for their preparation. The gels possess properties which make them useful in the manufacture and repair of biomaterials and medical devices, articles or implants, in particular the manufacture of soft tissue implants such as breast implants and the repair of orthopaedic joints such as spinal discs.
    Type: Application
    Filed: September 28, 2005
    Publication date: November 27, 2008
    Applicant: AORTECH BIOMATERIALS PTY LTD
    Inventors: Ajay Padsalgikar, Trang Thanh Nhan, Sriram Venkataramani, Mansour Mehrabi, Mark Bown