Patents by Inventor Sarnath Chattaraj
Sarnath Chattaraj 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: 9199043Abstract: A fluid syringe of the type used with fluid infusion devices is presented here. The fluid syringe generally includes a barrel, a piston, and a check valve seal. The barrel has an interior wall and a sealed main fluid chamber. The piston is slidably coupled within the barrel, and the piston has a piston seal forming an interference fluid seal against the interior wall. The check valve seal is coupled to the piston, and it is located between the piston seal and the main fluid chamber. The check valve seal forms an interference fluid seal against the interior wall when the piston is unloaded, and it disengages the interior wall to allow gas flow from the main fluid chamber toward the piston seal when the piston is loaded.Type: GrantFiled: September 30, 2013Date of Patent: December 1, 2015Assignee: Medtronic MiniMed, Inc.Inventors: Sarnath Chattaraj, Poonam S. Gulati, Lance P. Hoffman, Kiem Dang
-
Publication number: 20150112302Abstract: Methods and devices are provided for reducing a diabetic patient's foreign body immune response, including infusion site-loss and/or occlusion. Such foreign body responses are associated with the treatment of the diabetic patient where the treatment requires subcutaneous implantation of a foreign body, such as a cannula or catheter. In certain embodiments of the invention, a response-inhibiting agent is administered to a patient at the site of cannula/catheter insertion, thereby facilitating delivery of insulin to the diabetic patient and mitigating site-loss and/or occlusion over a period of time.Type: ApplicationFiled: October 13, 2014Publication date: April 23, 2015Inventors: Sarnath Chattaraj, Kiem H. Dang, Hsi Chung Fusselman, Poonam S. Gulati, Lance P. Hoffman, Guangping Zhang
-
Publication number: 20140378799Abstract: The present invention describes improved systems and methods for attaching external medical devices to the body of a patient using a multilayer attachment apparatus. Medical devices that require attachment to the body, including monitoring devices, drug-infusing devices and the like, can utilize embodiments of the attachment apparatus and method described herein. Embodiments of the invention include new adhesive and hook and loop attachment mechanisms and methods for using embodiments of the multilayer attachment apparatus to attach medical device and/or medical device components to the body.Type: ApplicationFiled: June 21, 2013Publication date: December 25, 2014Inventors: Sarnath Chattaraj, Kiem Dang, Poonam S. Gulati, James Shallenberger
-
Publication number: 20140031749Abstract: A fluid syringe of the type used with fluid infusion devices is presented here. The fluid syringe generally includes a barrel, a piston, and a check valve seal. The barrel has an interior wall and a sealed main fluid chamber. The piston is slidably coupled within the barrel, and the piston has a piston seal forming an interference fluid seal against the interior wall. The check valve seal is coupled to the piston, and it is located between the piston seal and the main fluid chamber. The check valve seal forms an interference fluid seal against the interior wall when the piston is unloaded, and it disengages the interior wall to allow gas flow from the main fluid chamber toward the piston seal when the piston is loaded.Type: ApplicationFiled: September 30, 2013Publication date: January 30, 2014Applicant: MEDTRONIC MINIMED, INC.Inventors: Sarnath Chattaraj, Poonam S. Gulati, Lance P. Hoffman, Kiem Dang
-
Patent number: 8574201Abstract: A fluid syringe of the type used with fluid infusion devices is presented here. The fluid syringe generally includes a barrel, a piston, and a check valve seal. The barrel has an interior wall and a sealed main fluid chamber. The piston is slidably coupled within the barrel, and the piston has a piston seal forming an interference fluid seal against the interior wall. The check valve seal is coupled to the piston, and it is located between the piston seal and the main fluid chamber. The check valve seal forms an interference fluid seal against the interior wall when the piston is unloaded, and it disengages the interior wall to allow gas flow from the main fluid chamber toward the piston seal when the piston is loaded.Type: GrantFiled: December 17, 2010Date of Patent: November 5, 2013Assignee: Medtronic Minimed, Inc.Inventors: Sarnath Chattaraj, Poonam S. Gulati, Lance P. Hoffman, Kiem Dang
-
Terpene media compositions for eluting compounds from matrices and methods for making and using them
Patent number: 8497133Abstract: Embodiments of the invention provide to apparatuses and media used in drug elution studies and methods for making and using them. One embodiment of the invention is a drug elution method that can be used for in-vitro studies of a matrix impregnated with a compound such as a drug blended polymer matrix. Such methods and materials can be used for example to assess and control the manufacturing process variability of drug eluting implantable devices such as cardiac leads.Type: GrantFiled: May 18, 2012Date of Patent: July 30, 2013Assignee: Medtronic MiniMed, Inc.Inventors: Sarnath Chattaraj, Poonam S. Gulati, Eugene Levin -
Terpene media compositions for eluting compounds from matrices and methods for making and using them
Patent number: 8372646Abstract: Embodiments of the invention provide to apparatuses and media used in drug elution studies and methods for making and using them. One embodiment of the invention is a drug elution method that can be used for in-vitro studies of a matrix impregnated with a compound such as a drug blended polymer matrix. Such methods and materials can be used for example to assess and control the manufacturing process variability of drug eluting implantable devices such as cardiac leads.Type: GrantFiled: December 6, 2010Date of Patent: February 12, 2013Assignee: Medtronic MiniMed, Inc.Inventors: Sarnath Chattaraj, Poonam S. Gulati, Eugene Levin -
Publication number: 20120165755Abstract: Syringe pistons for a fluid syringe, and related sealing elements, are presented here. A syringe piston includes a piston body having a fluid end, an actuator end, and an outer seal-retaining surface between the fluid end and the actuator end. The syringe piston may utilize a piston sealing sleeve or a piston sealing cover. The sleeve can be coupled to the piston body around the outer seal-retaining surface, the piston sealing sleeve having a fin-shaped fluid seal element to form an interference fluid seal with an interior wall of a syringe barrel. The sealing cover can be coupled overlying the tip of the piston body. The cover has a fin-shaped fluid seal element to form an interference fluid seal with an interior wall of a syringe barrel.Type: ApplicationFiled: March 8, 2012Publication date: June 28, 2012Applicant: MEDTRONIC MINIMED, INC.Inventors: Sarnath CHATTARAJ, Poonam S. GULATI, Kiem DANG, Jocelyn Anne MONTEBON
-
Publication number: 20120165754Abstract: Syringe pistons for a fluid syringe, and related sealing elements, are presented here. A syringe piston includes a piston body having a fluid end, an actuator end, and an outer seal-retaining surface between the fluid end and the actuator end. The syringe piston may utilize a piston sealing sleeve or a piston sealing cover. The sleeve can be coupled to the piston body around the outer seal-retaining surface, the piston sealing sleeve having a fin-shaped fluid seal element to form an interference fluid seal with an interior wall of a syringe barrel. The sealing cover can be coupled overlying the tip of the piston body. The cover has a fin-shaped fluid seal element to form an interference fluid seal with an interior wall of a syringe barrel.Type: ApplicationFiled: March 8, 2012Publication date: June 28, 2012Applicant: MEDTRONIC MINIMED, INC.Inventors: Sarnath CHATTARAJ, Poonam S. GULATI, Kiem DANG, Jocelyn Anne MONTEBON
-
Patent number: 8097224Abstract: Embodiments of the invention provide to apparatuses and media used in drug elution studies and methods for making and using them. Such methods and materials can be used for example to assess and control the manufacturing process variability of drug eluting implantable devices such as cardiac leads. One embodiment of the invention is a drug elution method that can be used for in-vitro studies of a matrix impregnated with a compound such as a drug blended polymer matrix. A related embodiment of the invention is an apparatus that is used for example to facilitate the practice of the above-noted methods by inhibiting the evaporation of dissolution media from the vessels in which elution is observed.Type: GrantFiled: December 21, 2009Date of Patent: January 17, 2012Assignee: Medtronic MiniMed, Inc.Inventors: Sarnath Chattaraj, Elango S. Minnoor, Eugene Levin, Poonam S. Gulati, John Pennala
-
Publication number: 20110152785Abstract: A fluid syringe of the type used with fluid infusion devices is presented here. The fluid syringe generally includes a barrel, a piston, and a check valve seal. The barrel has an interior wall and a sealed main fluid chamber. The piston is slidably coupled within the barrel, and the piston has a piston seal forming an interference fluid seal against the interior wall. The check valve seal is coupled to the piston, and it is located between the piston seal and the main fluid chamber. The check valve seal forms an interference fluid seal against the interior wall when the piston is unloaded, and it disengages the interior wall to allow gas flow from the main fluid chamber toward the piston seal when the piston is loaded.Type: ApplicationFiled: December 17, 2010Publication date: June 23, 2011Applicant: MEDTRONIC MINIMED, INC.Inventors: Sarnath CHATTARAJ, Poonam S. GULATI, Lance P. HOFFMAN, Kiem DANG
-
Publication number: 20110152820Abstract: The invention relates to methods and materials that, for example, function to increase the barrier properties of containers including polymeric drug medication reservoirs and related containers such as infusion set tubing. Embodiments of the invention include aqueous container systems having containers coated with a composition selected to have one or more material properties including an ability to reduce the diffusion or permeation of compounds such as oxygen, carbon dioxide, and preservatives (e.g. phenol, benzyl alcohol and m-cresol) into or through a wall of the container.Type: ApplicationFiled: December 21, 2010Publication date: June 23, 2011Applicant: MEDTRONIC MINIMED, INC.Inventors: Sarnath Chattaraj, Kiem Dang, Poonam S. Gulati
-
Patent number: 7892840Abstract: Embodiments of the invention provide to apparatuses and media used in drug elution studies and methods for making and using them. One embodiment of the invention is a drug elution method that can be used for in-vitro studies of a matrix impregnated with a compound such as a drug blended polymer matrix. Such methods and materials can be used for example to assess and control the manufacturing process variability of drug eluting implantable devices such as cardiac leads.Type: GrantFiled: December 30, 2008Date of Patent: February 22, 2011Assignee: Medtronic MiniMed, Inc.Inventors: Sarnath Chattaraj, Elango Minnoor, Eugene Levin, Poonam S. Gulati
-
Patent number: 7790461Abstract: Embodiments of the invention provide to apparatuses and media used in drug elution studies and methods for making and using them. One embodiment of the invention is a drug elution method that can be used for in-vitro studies of a matrix impregnated with a compound such as a drug blended polymer matrix. Such methods and materials can be used for example to assess and control the manufacturing process variability of drug eluting implantable devices such as cardiac leads.Type: GrantFiled: December 28, 2007Date of Patent: September 7, 2010Assignee: Medtronic MiniMed, Inc.Inventors: Sarnath Chattaraj, Poonam S. Gulati, Eugene Levin, Elango S. Minnoor
-
Publication number: 20100162800Abstract: Embodiments of the invention provide to apparatuses and media used in drug elution studies and methods for making and using them. One embodiment of the invention is a drug elution method that can be used for in-vitro studies of a matrix impregnated with a compound such as a drug blended polymer matrix. Such methods and materials can be used for example to assess and control the manufacturing process variability of drug eluting implantable devices such as cardiac leads.Type: ApplicationFiled: December 30, 2008Publication date: July 1, 2010Applicant: Medtronic MiniMed, Inc.Inventors: Sarnath Chattaraj, Elango Minnoor, Eugene Levin, Poonam S. Gulati
-
Publication number: 20100098595Abstract: Embodiments of the invention provide to apparatuses and media used in drug elution studies and methods for making and using them. Such methods and materials can be used for example to assess and control the manufacturing process variability of drug eluting implantable devices such as cardiac leads. One embodiment of the invention is a drug elution method that can be used for in-vitro studies of a matrix impregnated with a compound such as a drug blended polymer matrix. A related embodiment of the invention is an apparatus that is used for example to facilitate the practice of the above-noted methods by inhibiting the evaporation of dissolution media from the vessels in which elution is observed.Type: ApplicationFiled: December 21, 2009Publication date: April 22, 2010Applicant: MEDTRONIC MINIMED, INC.Inventors: Sarnath Chattaraj, Elango S. Minnoor, Eugene Levin, Poonam S. Gulati, John Pennala
-
Patent number: 7687268Abstract: Embodiments of the invention provide to apparatuses and media used in drug elution studies and methods for making and using them. Such methods and materials can be used for example to assess and control the manufacturing process variability of drug eluting implantable devices such as cardiac leads. One embodiment of the invention is a drug elution method that can be used for in-vitro studies of a matrix impregnated with a compound such as a drug blended polymer matrix. A related embodiment of the invention is an apparatus that is used for example to facilitate the practice of the above-noted methods by inhibiting the evaporation of dissolution media from the vessels in which elution is observed.Type: GrantFiled: July 25, 2007Date of Patent: March 30, 2010Assignee: Medtronic MiniMed, Inc.Inventors: Sarnath Chattaraj, Elango S. Minnoor, Eugene Levin, Poonam S. Gulati, John Pennala
-
Publication number: 20090169624Abstract: Embodiments of the invention provide to apparatuses and media used in drug elution studies and methods for making and using them. One embodiment of the invention is a drug elution method that can be used for in-vitro studies of a matrix impregnated with a compound such as a drug blended polymer matrix. Such methods and materials can be used for example to assess and control the manufacturing process variability of drug eluting implantable devices such as cardiac leads.Type: ApplicationFiled: December 28, 2007Publication date: July 2, 2009Inventors: Sarnath Chattaraj, Poonam S. Gulati, Eugene Levin, Elango S. Minnoor
-
Publication number: 20090029472Abstract: Embodiments of the invention provide to apparatuses and media used in drug elution studies and methods for making and using them. Such methods and materials can be used for example to assess and control the manufacturing process variability of drug eluting implantable devices such as cardiac leads. One embodiment of the invention is a drug elution method that can be used for in-vitro studies of a matrix impregnated with a compound such as a drug blended polymer matrix. A related embodiment of the invention is an apparatus that is used for example to facilitate the practice of the above-noted methods by inhibiting the evaporation of dissolution media from the vessels in which elution is observed.Type: ApplicationFiled: July 25, 2007Publication date: January 29, 2009Inventors: Sarnath Chattaraj, Elango S. Minnoor, Eugene Levin, Poonam S. Gulati, John Pennala
-
Publication number: 20080113443Abstract: Embodiments of the invention include polypeptide formulations and methods for making, using and characterizing them. Embodiment of the invention include stabilized polypeptide formulations, for example stable glucose oxidase formulations that can be used with glucose sensors used in the management of diabetes. Another embodiment of the invention includes methods to characterize the concentration of nonionic surfactants in stabilized polypeptide formulation for example stable insulin formulations that can be used in the treatment of diabetes.Type: ApplicationFiled: May 25, 2007Publication date: May 15, 2008Inventors: Poonam S. Gulati, Sarnath Chattaraj, Elango S. Minnoor, Eugene Levin, Xiao Zhu, William P. Van Antwerp