Patents by Inventor Kiem H. Dang
Kiem H. Dang 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).
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Patent number: 11944784Abstract: Disclosed herein are combined devices and methods of manufacturing such combined devices. The combined devices disclosed herein include an analyte sensor including a sensor probe; an infusion set hub including a cannula; and a flexible base. The analyte sensor and infusion set hub are attached to the flexible base such that movement of one of the analyte sensor and the infusion set hub is substantially not transferred to the other one of the analyte sensor and the infusion set hub.Type: GrantFiled: November 18, 2019Date of Patent: April 2, 2024Assignee: Medtronic Minimed, Inc.Inventors: Guangping Zhang, Kiem H. Dang, Valerie Chen, Ling Jiang, Evan Anselmo, Zhiwu Fang, Sarnath Chattaraj
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Publication number: 20240001046Abstract: A fluid delivery system and a fluid conduit assembly suitable for use with the system are disclosed herein. The system includes a fluid infusion pump and a fluid conduit assembly coupled to the pump to deliver medication fluid to a user. The fluid conduit assembly includes a structure defining a flow path for the medication fluid, and a gas trapping filter coupled to the structure and positioned in the flow path. The gas trapping filter functions to filter particulates from the medication fluid and retain gas bubbles from the medication fluid.Type: ApplicationFiled: September 19, 2023Publication date: January 4, 2024Inventors: Sarnath Chattaraj, Kiem H. Dang, Poonam S. Gulati, Guangping Zhang
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Patent number: 11786673Abstract: A fluid delivery system and a fluid conduit assembly suitable for use with the system are disclosed herein. The system includes a fluid infusion pump and a fluid conduit assembly coupled to the pump to deliver medication fluid to a user. The fluid conduit assembly includes a structure defining a flow path for the medication fluid, and a gas trapping filter coupled to the structure and positioned in the flow path. The gas trapping filter functions to filter particulates from the medication fluid and retain gas bubbles from the medication fluid.Type: GrantFiled: July 13, 2021Date of Patent: October 17, 2023Assignee: MEDTRONIC MINIMED, INC.Inventors: Sarnath Chattaraj, Kiem H. Dang, Poonam S. Gulati, Guangping Zhang
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Publication number: 20230149637Abstract: A fluid delivery system and a fluid conduit assembly suitable for use with the system are disclosed herein. The system includes a fluid infusion pump and a fluid conduit assembly coupled to the pump to deliver medication fluid to a user. The fluid conduit assembly includes a structure defining a flow path for the medication fluid, and a gas trapping filter coupled to the structure and positioned in the flow path. The gas trapping filter functions to filter particulates from the medication fluid and retain gas bubbles from the medication fluid. The structure includes at least one retaining feature to inhibit movement of the gas trapping filter.Type: ApplicationFiled: September 29, 2022Publication date: May 18, 2023Inventors: Davy Tong, Kiem H. Dang, Sarnath Chattaraj, Hsi Fusselman
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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
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Publication number: 20230055871Abstract: A hub member for an infusion set device includes a body and pads configured to receive a squeezing force directed radially inward relative to an axis of the body. The body compresses radially inward relative to the axis in response to the squeezing force. A plurality of connection features on the body are moveable from a first position radially inward toward a second position when the hub member is compressed radially inward. The connection features engage one or more further connection features on a housing to attach the hub member to the housing when the connection features are in the first position, and disengage the further connection features to release the hub member when the connection features are moved toward the second position.Type: ApplicationFiled: August 18, 2021Publication date: February 23, 2023Inventors: Davy Tong, Hsi C. Fusselman, Kiem H. Dang, Sarnath Chattaraj
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Patent number: 11547811Abstract: A fluid infusion device includes a housing having a reservoir chamber that receives a fluid reservoir. The fluid reservoir has a first end and a second end. The fluid infusion device includes a connector system having a first body section coupled to a second body section. The first body section defines a bore in communication with a chamber and a counterbore of the second body section to define a fluid flow path. The chamber of the second body section is in fluid communication with a vent subsystem defined through the second body section. The vent subsystem terminates in an outlet, and the vent subsystem is to direct gas in the fluid flow path through the second body section to the outlet. The fluid infusion device includes at least one ring disposed within the reservoir chamber that cooperates with the connector system to securely couple the connector system to the housing.Type: GrantFiled: January 29, 2020Date of Patent: January 10, 2023Assignee: Medtronic MiniMed, Inc.Inventors: Sarnath Chattaraj, Kiem H. Dang, Poonam S. Gulati
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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
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Publication number: 20220401644Abstract: A cannula includes a tubular body having an axial dimension through which a flow channel extends. The tubular body has a first end for insertion into a subject, and a second end configured to be held within a base of a medical device. The tubular body has a first length portion extending along the axial dimension from the first end toward the second end. A second length portion extends along the axial dimension from the first length portion toward the second end, and has an outer dimension that flares outward to be larger than the outer dimension of the first length portion. The second length portion also has a tubing wall thickness that is greater than the tubing wall thickness of the first length portion.Type: ApplicationFiled: June 18, 2021Publication date: December 22, 2022Inventors: Davy Tong, Kiem H. Dang, Hsi C. Fusselman, Sarnath Chattaraj, Thomas P. Miller
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Patent number: 11439352Abstract: A medical device includes a hub and an adhesive patch coupled to the hub. The adhesive patch is to couple the hub to an anatomy. The adhesive patch defines an edge that extends along a perimeter of the adhesive patch. The medical device includes an anisotropic shim coupled to the adhesive patch along the perimeter of the adhesive patch proximate the edge to resist an uncoupling of the adhesive patch from the anatomy. The anisotropic shim has an inner periphery spaced apart from an outer periphery and the anisotropic shim is locally rigid between the inner periphery and the outer periphery.Type: GrantFiled: January 15, 2019Date of Patent: September 13, 2022Assignee: Medtronic MiniMed, Inc.Inventors: Matthew William Yavorsky, Sarnath Chattaraj, Kiem H. Dang, Guangping Zhang
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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
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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
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Publication number: 20210338943Abstract: A fluid delivery system and a fluid conduit assembly suitable for use with the system are disclosed herein. The system includes a fluid infusion pump and a fluid conduit assembly coupled to the pump to deliver medication fluid to a user. The fluid conduit assembly includes a structure defining a flow path for the medication fluid, and a gas trapping filter coupled to the structure and positioned in the flow path. The gas trapping filter functions to filter particulates from the medication fluid and retain gas bubbles from the medication fluid.Type: ApplicationFiled: July 13, 2021Publication date: November 4, 2021Inventors: Sarnath Chattaraj, Kiem H. Dang, Poonam S. Gulati, Guangping Zhang
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Patent number: 11090446Abstract: A fluid delivery system and a fluid conduit assembly suitable for use with the system are disclosed herein. The system includes a fluid infusion pump and a fluid conduit assembly coupled to the pump to deliver medication fluid to a user. The fluid conduit assembly includes a structure defining a flow path for the medication fluid, and a gas trapping filter coupled to the structure and positioned in the flow path. The gas trapping filter functions to filter particulates from the medication fluid and retain gas bubbles from the medication fluid.Type: GrantFiled: March 28, 2019Date of Patent: August 17, 2021Assignee: Medtronic MiniMed, Inc.Inventors: Sarnath Chattaraj, Kiem H. Dang, Poonam S. Gulati, Guangping Zhang
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Publication number: 20210146047Abstract: Disclosed herein are combined devices and methods of manufacturing such combined devices. The combined devices disclosed herein include an analyte sensor including a sensor probe; an infusion set hub including a cannula; and a flexible base. The analyte sensor and infusion set hub are attached to the flexible base such that movement of one of the analyte sensor and the infusion set hub is substantially not transferred to the other one of the analyte sensor and the infusion set hub.Type: ApplicationFiled: November 18, 2019Publication date: May 20, 2021Inventors: Guangping Zhang, Kiem H. Dang, Valerie Chen, Ling Jiang, Evan Anselmo, Zhiwu Fang, Sarnath Chattaraj
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Publication number: 20200164159Abstract: A fluid infusion device includes a housing having a reservoir chamber that receives a fluid reservoir. The fluid reservoir has a first end and a second end. The fluid infusion device includes a connector system having a first body section coupled to a second body section. The first body section defines a bore in communication with a chamber and a counterbore of the second body section to define a fluid flow path. The chamber of the second body section is in fluid communication with a vent subsystem defined through the second body section. The vent subsystem terminates in an outlet, and the vent subsystem is to direct gas in the fluid flow path through the second body section to the outlet. The fluid infusion device includes at least one ring disposed within the reservoir chamber that cooperates with the connector system to securely couple the connector system to the housing.Type: ApplicationFiled: January 29, 2020Publication date: May 28, 2020Inventors: Sarnath Chattaraj, Kiem H. Dang, Poonam S. Gulati
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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
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Patent number: 10589038Abstract: A set connector system for venting a gas from a fluid reservoir of a fluid infusion device is provided. The set connector system includes a connector system having a first body section coupled to a second body section. The first body section defines a bore in communication with a chamber and a counterbore of the second body section to define a fluid flow path from the fluid reservoir. The chamber of the second body section is in fluid communication with a vent subsystem defined through the second body section. The vent subsystem terminates in an outlet, and the vent subsystem directs gas in the fluid flow path through the second body section to the outlet.Type: GrantFiled: April 27, 2016Date of Patent: March 17, 2020Assignee: Medtronic MiniMed, Inc.Inventors: Sarnath Chattaraj, Kiem H. Dang, Poonam S. Gulati
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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
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Publication number: 20190217023Abstract: A fluid delivery system and a fluid conduit assembly suitable for use with the system are disclosed herein. The system includes a fluid infusion pump and a fluid conduit assembly coupled to the pump to deliver medication fluid to a user. The fluid conduit assembly includes a structure defining a flow path for the medication fluid, and a gas trapping filter coupled to the structure and positioned in the flow path. The gas trapping filter functions to filter particulates from the medication fluid and retain gas bubbles from the medication fluid.Type: ApplicationFiled: March 28, 2019Publication date: July 18, 2019Inventors: Sarnath Chattaraj, Kiem H. Dang, Poonam S. Gulati, Guangping Zhang