Patents by Inventor Lance P. HOFFMAN
Lance P. HOFFMAN 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: 12465617Abstract: 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: GrantFiled: November 22, 2019Date of Patent: November 11, 2025Assignee: Medtronic MiniMed, Inc.Inventors: Sarnath Chattaraj, Kiem H. Dang, Hsi Chung Fusselman, Poonam S. Gulati, Lance P. Hoffman, Guangping Zhang
-
Publication number: 20250325580Abstract: 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: June 30, 2025Publication date: October 23, 2025Inventors: Sarnath Chattaraj, Kiem H. Dang, Hsi Chung Fusselman, Poonam S. Gulati, Lance P. Hoffman, Guangping Zhang
-
Publication number: 20250108150Abstract: This invention pertains to systems and components useful for infusing medications such as insulin. Typically, the components are used to deliver insulin to a diabetic patient at a site of infusion over a period of time greater than 4 days. The system components typically comprise a cannula adapted for subcutaneous insertion into a diabetic patient. The system further comprises a fluid conduit adapted to deliver the insulin solution from a medication reservoir to the site of infusion and a depot in operable contact with the fluid conduit. The depot comprises selected materials including a site-loss mitigating agent (such as heparin) which inhibits inflammation at the site of infusion, and encapsulation of the cannula at the site of infusion. The site-loss mitigating agent is not premixed with the insulin, and instead is adapted to contact the insulin solution in the depot as the insulin solution flows from the medication reservoir to the site of infusion.Type: ApplicationFiled: December 13, 2024Publication date: April 3, 2025Inventors: Kiem H. Dang, Sarnath Chattaraj, Hsi C. Fusselman, Lance P. Hoffman, Guangping Zhang
-
Patent number: 12208181Abstract: This invention pertains to systems and components useful for infusing medications such as insulin. Typically, the components are used to deliver insulin to a diabetic patient at a site of infusion over a period of time greater than 4 days. The system components typically comprise a cannula adapted for subcutaneous insertion into a diabetic patient. The system further comprises a fluid conduit adapted to deliver the insulin solution from a medication reservoir to the site of infusion and a depot in operable contact with the fluid conduit. The depot comprises selected materials including a site-loss mitigating agent (such as heparin) which inhibits inflammation at the site of infusion, and encapsulation of the cannula at the site of infusion. The site-loss mitigating agent is not premixed with the insulin, and instead is adapted to contact the insulin solution in the depot as the insulin solution flows from the medication reservoir to the site of infusion.Type: GrantFiled: August 30, 2022Date of Patent: January 28, 2025Assignee: MEDTRONIC MINIMED, INC.Inventors: Kiem H. Dang, Sarnath Chattaraj, Hsi C. Fusselman, Lance P. Hoffman, Guangping Zhang
-
Patent number: 12201752Abstract: This invention pertains to systems and components useful for infusing medications such as insulin. Typically, the components are used to deliver insulin to a diabetic patient at a site of infusion over a period of time greater than 4 days. The system components typically comprise a cannula adapted for subcutaneous insertion into a diabetic patient. The system further comprises a fluid conduit adapted to deliver the insulin solution from a medication reservoir to the site of infusion and a depot in operable contact with the fluid conduit. The depot comprises selected materials including a site-loss mitigating agent (such as heparin) which inhibits inflammation at the site of infusion, and encapsulation of the cannula at the site of infusion. The site-loss mitigating agent is not premixed with the insulin, and instead is adapted to contact the insulin solution in the depot as the insulin solution flows from the medication reservoir to the site of infusion.Type: GrantFiled: October 12, 2021Date of Patent: January 21, 2025Assignee: Medtronic MiniMed, Inc.Inventors: Kiem H. Dang, Sarnath Chattaraj, Hsi C. Fusselman, Lance P. Hoffman, Guangping Zhang
-
Publication number: 20230108058Abstract: This invention pertains to systems and components useful for infusing medications such as insulin. Typically, the components are used to deliver insulin to a diabetic patient at a site of infusion over a period of time greater than 4 days. The system components typically comprise a cannula adapted for subcutaneous insertion into a diabetic patient. The system further comprises a fluid conduit adapted to deliver the insulin solution from a medication reservoir to the site of infusion and a depot in operable contact with the fluid conduit. The depot comprises selected materials including a site-loss mitigating agent (such as heparin) which inhibits inflammation at the site of infusion, and encapsulation of the cannula at the site of infusion. The site-loss mitigating agent is not premixed with the insulin, and instead is adapted to contact the insulin solution in the depot as the insulin solution flows from the medication reservoir to the site of infusion.Type: ApplicationFiled: August 30, 2022Publication date: April 6, 2023Inventors: Kiem H. Dang, Sarnath Chattaraj, Hsi C. Fusselman, Lance P. Hoffman, Guangping Zhang
-
Publication number: 20220409777Abstract: This invention pertains to systems and components useful for infusing medications such as insulin. Typically, the components are used to deliver insulin to a diabetic patient at a site of infusion over a period of time greater than 4 days. The system components typically comprise a cannula adapted for subcutaneous insertion into a diabetic patient. The system further comprises a fluid conduit adapted to deliver the insulin solution from a medication reservoir to the site of infusion and a depot in operable contact with the fluid conduit. The depot comprises selected materials including a site-loss mitigating agent (such as heparin) which inhibits inflammation at the site of infusion, and encapsulation of the cannula at the site of infusion. The site-loss mitigating agent is not premixed with the insulin, and instead is adapted to contact the insulin solution in the depot as the insulin solution flows from the medication reservoir to the site of infusion.Type: ApplicationFiled: August 30, 2022Publication date: December 29, 2022Inventors: Kiem H. Dang, Sarnath Chattaraj, Hsi C. Fusselman, Lance P. Hoffman, Guangping Zhang
-
Publication number: 20220031941Abstract: This invention pertains to systems and components useful for infusing medications such as insulin. Typically, the components are used to deliver insulin to a diabetic patient at a site of infusion over a period of time greater than 4 days. The system components typically comprise a cannula adapted for subcutaneous insertion into a diabetic patient. The system further comprises a fluid conduit adapted to deliver the insulin solution from a medication reservoir to the site of infusion and a depot in operable contact with the fluid conduit. The depot comprises selected materials including a site-loss mitigating agent (such as heparin) which inhibits inflammation at the site of infusion, and encapsulation of the cannula at the site of infusion. The site-loss mitigating agent is not premixed with the insulin, and instead is adapted to contact the insulin solution in the depot as the insulin solution flows from the medication reservoir to the site of infusion.Type: ApplicationFiled: October 12, 2021Publication date: February 3, 2022Applicant: Medtronic MiniMed, Inc.Inventors: Kiem H. Dang, Sarnath Chattaraj, Hsi C. Fusselman, Lance P. Hoffman, Guangping Zhang
-
Patent number: 11197949Abstract: This invention pertains to systems and components useful for infusing medications such as insulin. Typically, the components are used to deliver insulin to a diabetic patient at a site of infusion over a period of time greater than 4 days. The system components typically comprise a cannula adapted for subcutaneous insertion into a diabetic patient. The system further comprises a fluid conduit adapted to deliver the insulin solution from a medication reservoir to the site of infusion and a depot in operable contact with the fluid conduit. The depot comprises selected materials including a site-loss mitigating agent (such as heparin) which inhibits inflammation at the site of infusion, and encapsulation of the cannula at the site of infusion. The site-loss mitigating agent is not premixed with the insulin, and instead is adapted to contact the insulin solution in the depot as the insulin solution flows from the medication reservoir to the site of infusion.Type: GrantFiled: January 18, 2018Date of Patent: December 14, 2021Assignee: Medtronic MiniMed, Inc.Inventors: Kiem H. Dang, Sarnath Chattaraj, Hsi C. Fusselman, Lance P. Hoffman, Guangping Zhang
-
Publication number: 20200138852Abstract: 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: November 22, 2019Publication date: May 7, 2020Applicant: Medtronic MiniMed, Inc.Inventors: Sarnath Chattaraj, Kiem H. Dang, Hsi Chung Fusselman, Poonam S. Gulati, Lance P. Hoffman, Guangping Zhang
-
Patent number: 10517892Abstract: 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: GrantFiled: October 13, 2014Date of Patent: December 31, 2019Assignee: MEDTRONIC MINIMED, INC.Inventors: Sarnath Chattaraj, Kiem H. Dang, Hsi Chung Fusselman, Poonam S. Gulati, Lance P. Hoffman, Guangping Zhang
-
Publication number: 20180200412Abstract: This invention pertains to systems and components useful for infusing medications such as insulin. Typically, the components are used to deliver insulin to a diabetic patient at a site of infusion over a period of time greater than 4 days. The system components typically comprise a cannula adapted for subcutaneous insertion into a diabetic patient. The system further comprises a fluid conduit adapted to deliver the insulin solution from a medication reservoir to the site of infusion and a depot in operable contact with the fluid conduit. The depot comprises selected materials including a site-loss mitigating agent (such as heparin) which inhibits inflammation at the site of infusion, and encapsulation of the cannula at the site of infusion. The site-loss mitigating agent is not premixed with the insulin, and instead is adapted to contact the insulin solution in the depot as the insulin solution flows from the medication reservoir to the site of infusion.Type: ApplicationFiled: January 18, 2018Publication date: July 19, 2018Applicant: Medtronic MiniMed, Inc.Inventors: Kiem H. Dang, Sarnath Chattaraj, Hsi C. Fusselman, Lance P. Hoffman, Guangping Zhang
-
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: 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
-
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