Patents by Inventor Kenny Dang
Kenny 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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Publication number: 20230390486Abstract: A fluid container is encompassed by a custom fluid container pressure sleeve, which is configured to wrap around, connect and form to the malleable fluid container such that, when the fluid container pressure sleeve is inflated with a gas, the fluid container pressure sleeve applies an inward directional pressure to the malleable fluid container from an exterior of the malleable fluid container to compress the malleable fluid container. A pump connected to the fluid container pressure sleeve is activated to provide the gas to the fluid container pressure sleeve to compress the malleable fluid container and direct a fluid (e.g.Type: ApplicationFiled: June 2, 2023Publication date: December 7, 2023Inventors: Kenny DANG, Srinivas Ramakrishnarao PEDDI, Janice R. PAK
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Publication number: 20210205075Abstract: A transcatheter valve prosthesis includes an expandable tubular stent, a prosthetic valve within the stent, and an anti-paravalvular leakage component coupled to and encircling the tubular stent. The anti-paravalvular leakage component includes a radially-compressible annular scaffold, which is a sinusoidal patterned ring of self-expanding material, and an impermeable membrane extending over the annular scaffold. The anti-paravalvular leakage component has an expanded configuration in which at least segments of the annular scaffold curve radially away from the tubular stent. Alternatively, the anti-paravalvular leakage component includes a plurality of self-expanding segments and an annular sealing element coupled to inner surfaces of the segments. The anti-paravalvular leakage component has an expanded configuration in which the segments curve radially away from the tubular stent and the annular sealing element is positioned between an outer surface of the tubular stent and inner surfaces of the segments.Type: ApplicationFiled: March 24, 2021Publication date: July 8, 2021Inventors: Carol EBERHARDT, Gopikrishnan SOUNDARARAJAN, Kenny DANG, Hussain RANGWALA, Mark TORRIANNI, Eric RICHARDSON, Kshitija GARDE
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Patent number: 10413401Abstract: A transcatheter valve prosthesis includes an expandable tubular stent, a prosthetic valve within the stent, and an anti-paravalvular leakage component coupled to and encircling the tubular stent. The anti-paravalvular leakage component includes a radially-compressible annular scaffold, which is a sinusoidal patterned ring of self-expanding material, and an impermeable membrane extending over the annular scaffold. The anti-paravalvular leakage component has an expanded configuration in which at least segments of the annular scaffold curve radially away from the tubular stent. Alternatively, the anti-paravalvular leakage component includes a plurality of self-expanding segments and an annular sealing element coupled to inner surfaces of the segments. The anti-paravalvular leakage component has an expanded configuration in which the segments curve radially away from the tubular stent and the annular sealing element is positioned between an outer surface of the tubular stent and inner surfaces of the segments.Type: GrantFiled: February 1, 2013Date of Patent: September 17, 2019Assignee: MEDTRONIC CV LUXEMBOURG S.A.R.L.Inventors: Carol Eberhardt, Gopikrishnan Soundararajan, Kenny Dang, Hussain Rangwala
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Patent number: 9402679Abstract: A surgical instrument includes an elongated body having a distal end, a proximal end, and a bore extending between the distal and proximal ends, a pair of jaws for severing vessel mounted on the distal end of the body, wherein at least one of the jaws has an electrically conductive material, and a handle coupled to the proximal end of the elongated body, wherein in a first mode of operation, the electrically conductive material is for receiving energy from a DC source, and in a second mode of operation, the electrically conductive material is for receiving energy from a RF source.Type: GrantFiled: May 27, 2009Date of Patent: August 2, 2016Assignee: MAQUET Cardiovascular LLCInventors: Fred Ginnebaugh, Ryan Abbott, Justin Williams, Kenny Dang, Rohit Girotra
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Patent number: 9308569Abstract: A device for crimping an expandable medical device and loading the expandable medical device into a delivery system includes an actuator, a compression assembly, and a pusher. The compression assembly is disposed in a compression chamber of the actuator and includes a plurality of compression elements coupled to each other to form a central cavity. The compression elements are coupled to the actuator such that rotation of the actuator causes the compression elements to rotate such that the central cavity radially compresses from an expanded configuration to a compressed configuration. The pusher includes a pusher rod and is configured to translate relative to the actuator towards the compression chamber when the cavity is in the compressed configuration such that the pusher rod may enter the cavity and push the medical device out of the cavity into delivery system.Type: GrantFiled: February 1, 2013Date of Patent: April 12, 2016Assignee: Medtronic, Inc.Inventors: Gopikrishnan Soundararajan, Christopher Webster, Kenny Dang, Hussain Rangwala
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Patent number: 9308346Abstract: A device for crimping an collapsible device and loading the collapsible device into a delivery system, includes a crimping tool configured to radially crimp at least a portion of the collapsible device, a loading tool configured to load at least a portion of the collapsible device into a delivery system, and a housing that houses at least one of the crimping tool and loading tool, wherein the device is configured to crimp and load the collapsible device without requiring manual repositioning of the collapsible device. Methods of crimping an collapsible device and loading the collapsible device into a delivery system are also disclosed.Type: GrantFiled: February 1, 2013Date of Patent: April 12, 2016Assignee: Medtronic, Inc.Inventors: Gopikrishnan Soundararajan, Christopher Webster, Kenny Dang, Hussain Rangwala
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Patent number: 8906048Abstract: A vessel harvesting system that is suitable for harvesting target vessels such as the saphenous vein or radial artery for cardiac artery bypass graft surgery. The system includes a vessel harvesting tool with an elongated cannula and a plurality of surgical instruments therein for separating the target vessels from the surrounding tissue and side branches. The harvesting tool includes a modular handle unit with a base attached to the elongated cannula and a sled that can adapt the base to various types of vessel severing/securing tools, such as tissue welders, bipolar scissors, and bipolar bisectors. The handle unit may be relatively rigid and integrated with the various tool movement controls to facilitate one-handed operation by a user. A severing/securing tool rotation mechanism may be incorporated within the handle and operated by a thumbwheel or other such mechanism. The vessel harvesting system may also provide distal CO2 insufflation for enhanced maintenance of the operating cavity.Type: GrantFiled: February 14, 2011Date of Patent: December 9, 2014Assignee: MAQUET Cardiovascular LLCInventors: Arthur M. Lin, Joseph N. Lamberti, Kenny Dang, Michael C. Stewart, Charles J. Adam, Justin N. Williams
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Publication number: 20140215791Abstract: A device for crimping an collapsible device and loading the collapsible device into a delivery system, includes a crimping tool configured to radially crimp at least a portion of the collapsible device, a loading tool configured to load at least a portion of the collapsible device into a delivery system, and a housing that houses at least one of the crimping tool and loading tool, wherein the device is configured to crimp and load the collapsible device without requiring manual repositioning of the collapsible device. Methods of crimping an collapsible device and loading the collapsible device into a delivery system are also disclosed.Type: ApplicationFiled: February 1, 2013Publication date: August 7, 2014Applicant: MEDTRONIC, INC.Inventors: Gopikrishnan Soundararajan, Christopher Webster, Kenny Dang, Hussain Rangwala
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Publication number: 20140215790Abstract: A device for crimping an expandable medical device and loading the expandable medical device into a delivery system includes an actuator, a compression assembly, and a pusher. The compression assembly is disposed in a compression chamber of the actuator and includes a plurality of compression elements coupled to each other to form a central cavity. The compression elements are coupled to the actuator such that rotation of the actuator causes the compression elements to rotate such that the central cavity radially compresses from an expanded configuration to a compressed configuration. The pusher includes a pusher rod and is configured to translate relative to the actuator towards the compression chamber when the cavity is in the compressed configuration such that the pusher rod may enter the cavity and push the medical device out of the cavity into delivery system.Type: ApplicationFiled: February 1, 2013Publication date: August 7, 2014Applicant: MEDTRONIC, INC.Inventors: Gopikrishnan Soundararajan, Christopher Webster, Kenny Dang, Hussain Rangwala
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Publication number: 20140222144Abstract: A transcatheter valve prosthesis includes an expandable tubular stent, a prosthetic valve within the stent, and an anti-paravalvular leakage component coupled to and encircling the tubular stent. The anti-paravalvular leakage component includes a radially-compressible annular scaffold, which is a sinusoidal patterned ring of self-expanding material, and an impermeable membrane extending over the annular scaffold. The anti-paravalvular leakage component has an expanded configuration in which at least segments of the annular scaffold curve radially away from the tubular stent. Alternatively, the anti-paravalvular leakage component includes a plurality of self-expanding segments and an annular sealing element coupled to inner surfaces of the segments. The anti-paravalvular leakage component has an expanded configuration in which the segments curve radially away from the tubular stent and the annular sealing element is positioned between an outer surface of the tubular stent and inner surfaces of the segments.Type: ApplicationFiled: February 1, 2013Publication date: August 7, 2014Applicant: Medtronic CV Luxembourg S.a.r.lInventors: Carol Eberhardt, Gopikrishnan Soundararajan, Kenny Dang, Hussain Rangwala, Mark Torrianni, Eric Richardson, Kshitija Garde
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Publication number: 20120046677Abstract: A vessel harvesting system that is suitable for harvesting target vessels such as the saphenous vein or radial artery for cardiac artery bypass graft surgery. The system includes a vessel harvesting tool with an elongated cannula and a plurality of surgical instruments therein for separating the target vessels from the surrounding tissue and side branches. The harvesting tool includes a modular handle unit with a base attached to the elongated cannula and a sled that can adapt the base to various types of vessel severing/securing tools, such as tissue welders, bipolar scissors, and bipolar bisectors. The handle unit may be relatively rigid and integrated with the various tool movement controls to facilitate one-handed operation by a user. A severing/securing tool rotation mechanism may be incorporated within the handle and operated by a thumbwheel or other such mechanism. The vessel harvesting system may also provide distal CO2 insufflation for enhanced maintenance of the operating cavity.Type: ApplicationFiled: February 14, 2011Publication date: February 23, 2012Applicant: MAQUET CARDIOVASCULAR LLCInventors: Arthur M. Lin, Joseph N. Lamberti, Kenny Dang, Michael C. Stewart, Charles J. Adam, Justin N. Williams
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Patent number: 7887558Abstract: A vessel harvesting system that is suitable for harvesting target vessels such as the saphenous vein or radial artery for cardiac artery bypass graft surgery. The system includes a vessel harvesting tool with an elongated cannula and a plurality of surgical instruments therein for separating the target vessels from the surrounding tissue and side branches. The harvesting tool includes a modular handle unit with a base attached to the elongated cannula and a sled that can adapt the base to various types of vessel severing/securing tools, such as tissue welders, bipolar scissors, and bipolar bisectors. The handle unit may be relatively rigid and integrated with the various tool movement controls to facilitate one-handed operation by a user. A severing/securing tool rotation mechanism may be incorporated within the handle and operated by a thumbwheel or other such mechanism. The vessel harvesting system may also provide distal CO2 insufflation for enhanced maintenance of the operating cavity.Type: GrantFiled: September 28, 2004Date of Patent: February 15, 2011Assignee: Maquet Cardiovascular LLCInventors: Arthur M. Lin, Joseph N. Lamberti, Kenny Dang, Michael C. Stewart, Charles J. Adam, Justin N. Williams
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Publication number: 20090299367Abstract: A surgical instrument includes an elongated body having a distal end, a proximal end, and a bore extending between the distal and proximal ends, a pair of jaws for severing vessel mounted on the distal end of the body, wherein at least one of the jaws has an electrically conductive material, and a handle coupled to the proximal end of the elongated body, wherein in a first mode of operation, the electrically conductive material is for receiving energy from a DC source, and in a second mode of operation, the electrically conductive material is for receiving energy from a RF source.Type: ApplicationFiled: May 27, 2009Publication date: December 3, 2009Applicant: MAQUET CARDIOVASCULAR LLCInventors: Fred Ginnebaugh, Ryan Abbott, Justin Williams, Kenny Dang, Rohit Girotra
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Publication number: 20080275501Abstract: Described herein are systems and methods for inserting a hemostatic seal into a delivery device. One such system can include a loading tool and a delivery device configured to detachably mate with one another. The loading tool can house a hemostatic seal in its unfolded configuration and can fold the seal for delivery into the delivery device. The delivery device can then be advanced into the loading tool to insert the seal into the delivery device.Type: ApplicationFiled: May 1, 2008Publication date: November 6, 2008Inventors: Albert K. CHIN, Arthur M. Lin, Kenny Dang, Alfredo R. Cantu, Paul A. DeLipski, Ali Eslambolchi, Kumar Jambunathan, Kristopher Yee, Juan I. Perez
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Publication number: 20060217706Abstract: A surgical apparatus and methods for severing and welding tissue, in particular blood vessels. The apparatus includes an elongated shaft having a pair of relatively movable jaws at a distal end thereof. A first heating element on one of the jaws is adapted to heat up to a first temperature and form a welded region within the tissue, while a second heating element on one of the jaws is adapted to heat up to a second temperature and sever the tissue within the welded region. The first and second heating elements may be provided on the same or opposite jaws. A control handle provided on the proximal end of the elongated shaft includes controls for opening and closing the jaws, and may include an actuator for sending current through the first and second heating elements. The first and second heating elements may be electrically connected in series, and the first heating element may be bifurcated such that it conducts about one half of the current as the second heating element.Type: ApplicationFiled: March 25, 2005Publication date: September 28, 2006Inventors: Liming Lau, Arnold Escano, Jerry Jarrard, Sam Ho, Ryan Abbott, Arthur Lin, Jesse McQuiston, Peter Callas, Geoffrey Willis, Michael Stewart, Kimberly Barkman, Joseph Lamberti, Kenny Dang
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Publication number: 20060217697Abstract: A surgical apparatus and methods for severing and welding tissue, in particular blood vessels. The apparatus includes an elongated shaft having a pair of relatively movable jaws at a distal end thereof. A first heating element on one of the jaws is adapted to heat up to a first temperature and form a welded region within the tissue, while a second heating element on one of the jaws is adapted to heat up to a second temperature and sever the tissue within the welded region. The first and second heating elements may be provided on the same or opposite jaws. A control handle provided on the proximal end of the elongated shaft includes controls for opening and closing the jaws, and may include an actuator for sending current through the first and second heating elements. The first and second heating elements may be electrically connected in series, and the first heating element may be bifurcated such that it conducts about one half of the current as the second heating element.Type: ApplicationFiled: March 25, 2005Publication date: September 28, 2006Inventors: Liming Lau, Arthur Lin, Sam Ho, Ryan Abbott, Kenny Dang, Jesse McQuiston, Peter Callas, Arnold Escano, Michael Stewart, Jerry Jarrard, Joseph Lamberti, Justin Williams, Kristopher Yee
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Publication number: 20060074444Abstract: A vessel harvesting system that is suitable for harvesting target vessels such as the saphenous vein or radial artery for cardiac artery bypass graft surgery. The system includes a vessel harvesting tool with an elongated cannula and a plurality of surgical instruments therein for separating the target vessels from the surrounding tissue and side branches. The harvesting tool includes a modular handle unit with a base attached to the elongated cannula and a sled that can adapt the base to various types of vessel severing/securing tools, such as tissue welders, bipolar scissors, and bipolar bisectors. The handle unit may be relatively rigid and integrated with the various tool movement controls to facilitate one-handed operation by a user. A severing/securing tool rotation mechanism may be incorporated within the handle and operated by a thumbwheel or other such mechanism. The vessel harvesting system may also provide distal CO2 insufflation for enhanced maintenance of the operating cavity.Type: ApplicationFiled: September 28, 2004Publication date: April 6, 2006Inventors: Arthur Lin, Joseph Lamberti, Kenny Dang, Michael Stewart, Charles Adam, Justin Williams
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Patent number: 6579310Abstract: An intravascular stent having struts which overlap, at least partially, when the stent is compressed. The overlapping struts allow the stent to be crimped to a smaller initial delivery diameter than may be achieved with non-overlapping designs for given metal density. The stent has a reduced delivery diameter which allows for the construction of reduced profile stent-delivery systems, which thereby allow for the stenting of smaller vessels than has heretofore been possible.Type: GrantFiled: August 17, 2000Date of Patent: June 17, 2003Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Daniel L. Cox, Kenny Dang, Andreina P. Gomez, Orlando Padilla
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Publication number: 20020193869Abstract: A stent for use in a patient's blood vessel to maintain the patency of the vessel contains strategically located radiopaque material. The strategic placement of the radiopaque material in the core structure of the stent functions to enhance the resolution of the stent under fluoroscopy. The initial part of the process includes forming a groove in a piece of tube stock and securing radiopaque material into the groove by press fitting or diffusion bonding. After the securing method, a layer of material can be sputtered coated over the only radiopaque material or over the entire stent. Finally, a pattern of struts and splines is cut into the tube composite to form the stent.Type: ApplicationFiled: August 12, 2002Publication date: December 19, 2002Inventor: Kenny Dang
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Patent number: 6471721Abstract: A stent for use in a patient's blood vessel to maintain the patency of the vessel contains strategically located radiopaque material. The strategic placement of the radiopaque material in the core structure of the stent functions to enhance the resolution of the stent under fluoroscopy. The initial part of the process includes forming a groove in a piece of tube stock and securing radiopaque material into the groove by press fitting or diffusion bonding. After the securing method, a layer of material can be sputtered coated over the only radiopaque material or over the entire stent. Finally, a pattern of struts and splines is cut into the tube composite to form the stent.Type: GrantFiled: December 30, 1999Date of Patent: October 29, 2002Assignee: Advanced Cardiovascular Systems, Inc.Inventor: Kenny Dang