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).

  • Patent number: 11944784
    Abstract: 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: Grant
    Filed: November 18, 2019
    Date of Patent: April 2, 2024
    Assignee: Medtronic Minimed, Inc.
    Inventors: Guangping Zhang, Kiem H. Dang, Valerie Chen, Ling Jiang, Evan Anselmo, Zhiwu Fang, Sarnath Chattaraj
  • Publication number: 20240001046
    Abstract: 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: Application
    Filed: September 19, 2023
    Publication date: January 4, 2024
    Inventors: Sarnath Chattaraj, Kiem H. Dang, Poonam S. Gulati, Guangping Zhang
  • Patent number: 11786673
    Abstract: 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: Grant
    Filed: July 13, 2021
    Date of Patent: October 17, 2023
    Assignee: MEDTRONIC MINIMED, INC.
    Inventors: Sarnath Chattaraj, Kiem H. Dang, Poonam S. Gulati, Guangping Zhang
  • Publication number: 20230149637
    Abstract: 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: Application
    Filed: September 29, 2022
    Publication date: May 18, 2023
    Inventors: Davy Tong, Kiem H. Dang, Sarnath Chattaraj, Hsi Fusselman
  • Publication number: 20230108058
    Abstract: 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: Application
    Filed: August 30, 2022
    Publication date: April 6, 2023
    Inventors: Kiem H. Dang, Sarnath Chattaraj, Hsi C. Fusselman, Lance P. Hoffman, Guangping Zhang
  • Publication number: 20230055871
    Abstract: 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: Application
    Filed: August 18, 2021
    Publication date: February 23, 2023
    Inventors: Davy Tong, Hsi C. Fusselman, Kiem H. Dang, Sarnath Chattaraj
  • Patent number: 11547811
    Abstract: 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: Grant
    Filed: January 29, 2020
    Date of Patent: January 10, 2023
    Assignee: Medtronic MiniMed, Inc.
    Inventors: Sarnath Chattaraj, Kiem H. Dang, Poonam S. Gulati
  • Publication number: 20220409777
    Abstract: 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: Application
    Filed: August 30, 2022
    Publication date: December 29, 2022
    Inventors: Kiem H. Dang, Sarnath Chattaraj, Hsi C. Fusselman, Lance P. Hoffman, Guangping Zhang
  • Publication number: 20220401644
    Abstract: 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: Application
    Filed: June 18, 2021
    Publication date: December 22, 2022
    Inventors: Davy Tong, Kiem H. Dang, Hsi C. Fusselman, Sarnath Chattaraj, Thomas P. Miller
  • Patent number: 11439352
    Abstract: 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: Grant
    Filed: January 15, 2019
    Date of Patent: September 13, 2022
    Assignee: Medtronic MiniMed, Inc.
    Inventors: Matthew William Yavorsky, Sarnath Chattaraj, Kiem H. Dang, Guangping Zhang
  • Publication number: 20220031941
    Abstract: 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: Application
    Filed: October 12, 2021
    Publication date: February 3, 2022
    Applicant: Medtronic MiniMed, Inc.
    Inventors: Kiem H. Dang, Sarnath Chattaraj, Hsi C. Fusselman, Lance P. Hoffman, Guangping Zhang
  • Patent number: 11197949
    Abstract: 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: Grant
    Filed: January 18, 2018
    Date of Patent: December 14, 2021
    Assignee: Medtronic MiniMed, Inc.
    Inventors: Kiem H. Dang, Sarnath Chattaraj, Hsi C. Fusselman, Lance P. Hoffman, Guangping Zhang
  • Publication number: 20210338943
    Abstract: 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: Application
    Filed: July 13, 2021
    Publication date: November 4, 2021
    Inventors: Sarnath Chattaraj, Kiem H. Dang, Poonam S. Gulati, Guangping Zhang
  • Patent number: 11090446
    Abstract: 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: Grant
    Filed: March 28, 2019
    Date of Patent: August 17, 2021
    Assignee: Medtronic MiniMed, Inc.
    Inventors: Sarnath Chattaraj, Kiem H. Dang, Poonam S. Gulati, Guangping Zhang
  • Publication number: 20210146047
    Abstract: 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: Application
    Filed: November 18, 2019
    Publication date: May 20, 2021
    Inventors: Guangping Zhang, Kiem H. Dang, Valerie Chen, Ling Jiang, Evan Anselmo, Zhiwu Fang, Sarnath Chattaraj
  • Publication number: 20200164159
    Abstract: 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: Application
    Filed: January 29, 2020
    Publication date: May 28, 2020
    Inventors: Sarnath Chattaraj, Kiem H. Dang, Poonam S. Gulati
  • Publication number: 20200138852
    Abstract: 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: Application
    Filed: November 22, 2019
    Publication date: May 7, 2020
    Applicant: Medtronic MiniMed, Inc.
    Inventors: Sarnath Chattaraj, Kiem H. Dang, Hsi Chung Fusselman, Poonam S. Gulati, Lance P. Hoffman, Guangping Zhang
  • Patent number: 10589038
    Abstract: 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: Grant
    Filed: April 27, 2016
    Date of Patent: March 17, 2020
    Assignee: Medtronic MiniMed, Inc.
    Inventors: Sarnath Chattaraj, Kiem H. Dang, Poonam S. Gulati
  • Patent number: 10517892
    Abstract: 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: Grant
    Filed: October 13, 2014
    Date of Patent: December 31, 2019
    Assignee: MEDTRONIC MINIMED, INC.
    Inventors: Sarnath Chattaraj, Kiem H. Dang, Hsi Chung Fusselman, Poonam S. Gulati, Lance P. Hoffman, Guangping Zhang
  • Publication number: 20190217023
    Abstract: 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: Application
    Filed: March 28, 2019
    Publication date: July 18, 2019
    Inventors: Sarnath Chattaraj, Kiem H. Dang, Poonam S. Gulati, Guangping Zhang