Patents by Inventor Don Tran

Don Tran 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: 10441420
    Abstract: The present disclosure relates to numerous devices and methods for transcatheter stented prosthetic heart valve loading and delivery. Such devices and methods reduce suture tangling and also provide the ability to adjust the stented prosthetic heart valve expansion and contraction prior to the final release of the stented prosthetic heart valve from the delivery device.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: October 15, 2019
    Assignee: Medtronic Vascular, Inc.
    Inventors: Martha Barajas-Torres, Kevin Mauch, Jeffrey Sandstrom, Jill Mendelson, Don Tran
  • Publication number: 20190282363
    Abstract: The present disclosure relates to numerous devices and methods for transcatheter stented prosthetic heart valve loading and delivery. Such devices and methods reduce suture tangling and also provide the ability to adjust the stented prosthetic heart valve expansion and contraction prior to the final release of the stented prosthetic heart valve from the delivery device.
    Type: Application
    Filed: May 31, 2019
    Publication date: September 19, 2019
    Applicant: Medtronic Vascular, Inc.
    Inventors: Martha Barajas-Torres, Kevin Mauch, Jeffrey Sandstrom, Jill Mendelson, Don Tran
  • Publication number: 20190262148
    Abstract: A tool for compressing a stented prosthesis. The tool includes first and second sets of rollers. The first set includes a plurality of rollers arranged to define a first working region having a first working diameter. The second set includes a plurality of rollers arranged to define a second working region having a second working diameter. The sets of rollers are arranged such that the working regions are axially aligned. The first working diameter is greater than the second working diameter. A stented prosthesis traversing the first working region and then the second working region is forced to a compressed state. In some embodiments, the tool includes one or more intermediate sets of rollers between the first and second sets of rollers, with each of the intermediate sets of rollers defining a working region having a working diameter. The respective working diameters progressively decrease in a downstream direction.
    Type: Application
    Filed: May 8, 2019
    Publication date: August 29, 2019
    Applicant: Medtronic Vascular, Inc.
    Inventors: Geoffrey Orth, Kenny Bruner, Don Tran, Jill Mendelson, James R. Keogh
  • Patent number: 10292844
    Abstract: A tool for compressing a stented prosthesis. The tool includes first and second sets of rollers. The first set includes a plurality of rollers arranged to define a first working region having a first working diameter. The second set includes a plurality of rollers arranged to define a second working region having a second working diameter. The sets of rollers are arranged such that the working regions are axially aligned. The first working diameter is greater than the second working diameter. A stented prosthesis traversing the first working region and then the second working region is forced to a compressed state. In some embodiments, the tool includes one or more intermediate sets of rollers between the first and second sets of rollers, with each of the intermediate sets of rollers defining a working region having a working diameter. The respective working diameters progressively decrease in a downstream direction.
    Type: Grant
    Filed: May 17, 2016
    Date of Patent: May 21, 2019
    Assignee: Medtronic Vascular, Inc.
    Inventors: Geoffrey Orth, Kenny Bruner, Don Tran, Jill Mendelson, James R. Keogh
  • Publication number: 20190117302
    Abstract: A neuromodulation catheter in accordance with a particular embodiment includes an elongate shaft and a neuromodulation element operably connected to the shaft. The shaft includes a proximal hypotube segment at its proximal end portion and a jacket disposed around at least a portion of an outer surface of the hypotube segment. The jacket may be made at least partially of a polymer blend including polyether block amide and polysiloxane. The neuromodulation element includes a distal hypotube segment and a tubular jacket disposed around at least a portion of an outer surface of the distal hypotube segment. The jacket has reduced-diameter segments spaced apart along its longitudinal axis. The neuromodulation element further includes band electrodes respectively seated in the reduced-diameter segments and respectively forming closed loops extending circumferentially around the jacket.
    Type: Application
    Filed: December 21, 2018
    Publication date: April 25, 2019
    Inventors: Don Tran, Rudolph Beasley, Jaime Rios, Sukyoung Shin, Sina Som
  • Patent number: 10166069
    Abstract: A neuromodulation catheter in accordance with a particular embodiment includes an elongate shaft and a neuromodulation element operably connected to the shaft. The shaft includes a proximal hypotube segment at its proximal end portion and a jacket disposed around at least a portion of an outer surface of the hypotube segment. The jacket may be made at least partially of a polymer blend including polyether block amide and polysiloxane. The neuromodulation element includes a distal hypotube segment and a tubular jacket disposed around at least a portion of an outer surface of the distal hypotube segment. The jacket has reduced-diameter segments spaced apart along its longitudinal axis. The neuromodulation element further includes band electrodes respectively seated in the reduced-diameter segments and respectively forming closed loops extending circumferentially around the jacket.
    Type: Grant
    Filed: January 27, 2015
    Date of Patent: January 1, 2019
    Assignee: Medtronic Ardian Luxembourg S.a.r.l.
    Inventors: Don Tran, Rudy Beasley, Jaime Rios, Sukyoung Shin, Sina Som
  • Publication number: 20180098848
    Abstract: Delivery devices for delivery of a stented prosthetic heart valve. Various delivery devices include an outer sheath assembly including an outer sheath connected to a capsule that is advanced proximally to retain the prosthetic valve, which is secured over an inner shaft assembly of the delivery device. The delivery device further includes a bumper to provide a smooth transition of the capsule over the prosthetic valve during loading and recapture procedures. The bumper is expandable from a first position to a second position in which a distal end of the bumper is expanded to increase its diameter. The bumper can be biased in the second, expanded position so that the bumper automatically transitions to the expanded position upon retraction of the outer sheath.
    Type: Application
    Filed: October 12, 2016
    Publication date: April 12, 2018
    Inventors: Don Tran, Martha Barajas-Torres, James Mitchell, Leonel Mendoza, Siyan Som, Jill Mendelson, David Grossman
  • Publication number: 20170348101
    Abstract: Delivery devices for a stented prosthetic heart valve. The delivery device includes a spindle, at least one cord, and a covering feature associated with the spindle for selectively covering at least a portion of a stented prosthetic heart valve tethered to the spindle in a delivery state. In some embodiments, the covering feature includes a tip mounted to the spindle. The tip can include an overhang region for selectively covering a portion of the stented prosthetic heart valve. In other embodiments, the tip can include a tip body and a compressible foam bumper. In yet other embodiments, the covering feature includes an outer sheath arranged to selectively cover the stented prosthetic heart valve. The outer sheath can be elastic and stretchable for recapturing a partially expanded prosthesis, for example by including one or more windows covered by a stretchable covering layer.
    Type: Application
    Filed: June 5, 2017
    Publication date: December 7, 2017
    Inventors: Brendan Vaughn, Maeve Britton, Martha Barajas-Torres, Susheel Deshmukh, Leonel Mendoza, Siyan Som, Michele Silver, Don Tran, Nathan Brown, Jill Mendelson
  • Publication number: 20170333228
    Abstract: A tool for compressing a stented prosthesis. The tool includes first and second sets of rollers. The first set includes a plurality of rollers arranged to define a first working region having a first working diameter. The second set includes a plurality of rollers arranged to define a second working region having a second working diameter. The sets of rollers are arranged such that the working regions are axially aligned. The first working diameter is greater than the second working diameter. A stented prosthesis traversing the first working region and then the second working region is forced to a compressed state. In some embodiments, the tool includes one or more intermediate sets of rollers between the first and second sets of rollers, with each of the intermediate sets of rollers defining a working region having a working diameter. The respective working diameters progressively decrease in a downstream direction.
    Type: Application
    Filed: May 17, 2016
    Publication date: November 23, 2017
    Inventors: Geoffrey Orth, Kenny Bruner, Don Tran, Jill Mendelson, James R. Keogh
  • Publication number: 20170252161
    Abstract: Numerous delivery devices for delivery of a stented prosthesis, such as a stented prosthetic heart valve. Various delivery devices include a capsule that is advanced proximally to retain the stented prosthesis, which is secured over an inner shaft assembly of the delivery device. The delivery device further includes a bumper or bumper assembly to provide a smooth transition of the capsule over the stented prosthesis. In some alternate disclosed embodiments, the bumper further serves to connect various elements of the inner shaft assembly. Additional embodiments include a bumper assembly arranged and configured to longitudinally expand and contract to substantially fill any open space as the capsule is retracted from the stented prosthesis, which prevents kinking in the capsule. Additional embodiments include proximal and/or distal bumpers for temporarily covering and smoothing the ends of the stented prosthesis as part of a delivery device that does not include a capsule.
    Type: Application
    Filed: March 3, 2017
    Publication date: September 7, 2017
    Inventors: Don Tran, Martha Barajas-Torres, Marian Lally, Michael Gloss, Timothy Groen, Leonel Mendoza, Siyan Som, Michele Silver, Nathan Brown, Jill Mendelson
  • Publication number: 20170165067
    Abstract: The present disclosure relates to numerous devices and methods for transcatheter stented prosthetic heart valve loading and delivery. Such devices and methods reduce suture tangling and also provide the ability to adjust the stented prosthetic heart valve expansion and contraction prior to the final release of the stented prosthetic heart valve from the delivery device.
    Type: Application
    Filed: December 13, 2016
    Publication date: June 15, 2017
    Inventors: Martha Barajas-Torres, Kevin Mauch, Jeffrey Sandstrom, Jill Mendelson, Don Tran
  • Publication number: 20160374743
    Abstract: A neuromodulation catheter in accordance with a particular embodiment includes an elongate shaft and a neuromodulation element operably connected to the shaft. The shaft includes a proximal hypotube segment at its proximal end portion and a jacket disposed around at least a portion of an outer surface of the hypotube segment. The jacket may be made at least partially of a polymer blend including polyether block amide and polysiloxane. The neuromodulation element includes a distal hypotube segment and a tubular jacket disposed around at least a portion of an outer surface of the distal hypotube segment. The jacket has reduced-diameter segments spaced apart along its longitudinal axis. The neuromodulation element further includes band electrodes respectively seated in the reduced-diameter segments and respectively forming closed loops extending circumferentially around the jacket.
    Type: Application
    Filed: March 20, 2015
    Publication date: December 29, 2016
    Inventors: Rudy BEASLEY, Don TRAN, William BERTHIAUME, Justin GOSHGARIAN, Charlie CONSIDINE, Susheel DESHMUKH, Rajeshkumar DHAMODHARASAMY, Sina SOM, Sukyoung SHIN, Jaime RIOS
  • Publication number: 20150209104
    Abstract: A neuromodulation catheter in accordance with a particular embodiment includes an elongate shaft and a neuromodulation element operably connected to the shaft. The shaft includes a proximal hypotube segment at its proximal end portion and a jacket disposed around at least a portion of an outer surface of the hypotube segment. The jacket may be made at least partially of a polymer blend including polyether block amide and polysiloxane. The neuromodulation element includes a distal hypotube segment and a tubular jacket disposed around at least a portion of an outer surface of the distal hypotube segment. The jacket has reduced-diameter segments spaced apart along its longitudinal axis. The neuromodulation element further includes band electrodes respectively seated in the reduced-diameter segments and respectively forming closed loops extending circumferentially around the jacket.
    Type: Application
    Filed: January 27, 2015
    Publication date: July 30, 2015
    Inventors: Don Tran, Rudy Beasley, Jaime Rios, Sukyoung Shin, Sina Som
  • Patent number: 9066785
    Abstract: A packaging system is disclosed for shipping a prosthetic tissue valve in a storage solution and preparing and loading of the bioprosthetic valve onto a catheter-based delivery system. The packaging system includes a fluid tight container filled with the storage solution attached to a delivery catheter, wherein the container surrounds the prosthetic tissue valve that is in a pre-loaded position on the delivery catheter during shipment and storage. The prosthetic tissue valve may include an attachment mechanism that attaches to the delivery catheter to properly position the tissue valve for loading within the delivery catheter. In another embodiment where the prosthetic tissue valve is not attached to the delivery catheter during shipment, the attachment mechanism may interact with the prosthetic tissue valve shipping container to prevent the bioprosthetic valve from moving during shipment.
    Type: Grant
    Filed: April 6, 2009
    Date of Patent: June 30, 2015
    Assignee: Medtronic Vascular, Inc.
    Inventors: Don Tran, Timothy Ryan, Jeffrey Allen, Melissa Denton, Adam Podbelski
  • Patent number: 8967302
    Abstract: A vehicle air turbine has a vehicle body and an air turbine assembly includes an air turbine blade mounted on a turbine frame. The turbine frame is mounted on a rotating axle, and the rotating axle is mounted to the vehicle body. An air inlet is mounted in front of the air turbine with an air outlet behind the air turbine. A front wing is connected to a wing frame to form an airfoil for directing air through the turbine. The front wing is movable relative to the wing frame, and the airfoil is inverted to draw air into the air inlet. A turbine inlet deflector directs air flow towards a turbine inlet portion. A generator can be mounted to the rotating axle for generating electricity.
    Type: Grant
    Filed: August 16, 2011
    Date of Patent: March 3, 2015
    Inventor: Don Tran
  • Patent number: 8926588
    Abstract: A steerable delivery catheter includes an outer sheath with a housing disposed at a distal end thereof to define a chamber for a medical device, the chamber having an open distal end and a proximal inner shelf. An inner shaft is slidably disposed within the sheath and has an abutment attached to the distal end of the shaft, the abutment being slidably contained within the chamber. During navigation of the catheter, when the inner shaft is tensioned the abutment engages the shelf to apply a compressive force to the sheath to selectively deflect a distal region of the catheter. When the catheter has been navigated to the deployment site the sheath is withdrawn while the abutment maintains the medical device in place as it is deployed. A delivery method also is disclosed.
    Type: Grant
    Filed: July 5, 2011
    Date of Patent: January 6, 2015
    Assignee: Medtronic Vascular, Inc.
    Inventors: William Berthiaume, Don Tran, Maria Valdovinos, Brent Locsin
  • Patent number: 8876892
    Abstract: A device for percutaneously deploying a stented prosthetic heart valve includes a distal portion, a spacing collar, and an outer collar. The distal portion provides a coupling structure configured to selectively engage the stented prosthetic heart valve. The spacing collar is located proximal to the distal portion. The spacing collar is transitionable from a loaded state to an activated state. The spacing collar in the loaded state has a radial dimension less than the spacing collar in the activated state. The outer collar is configured to be movable relative to the distal portion and the spacing collar. The outer collar is slidably disposed over the spacing collar to provide the loaded state and is slidably retracted from the spacing collar when in the activated state.
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: November 4, 2014
    Assignee: Medtronic, Inc.
    Inventors: Don Tran, Nathan Wiemeyer, Susheel Deshmukh
  • Patent number: 8771344
    Abstract: A device for percutaneously repairing a heart valve of a patient including a self-expanding, stented prosthetic heart valve and a delivery system. The delivery system includes delivery sheath slidably receiving an inner shaft forming a coupling structure. A capsule of the delivery sheath includes a distal segment and a proximal segment. An outer diameter of the distal segment is greater than that of the proximal segment. An area moment of inertia of the distal segment can be greater than an area moment of inertia of the proximal segment. Regardless, an axial length of the distal segment is less than the axial length of the prosthesis. In a loaded state, the prosthesis engages the coupling structure and is compressively retained within the capsule. The capsule is unlikely to kink when traversing the patient's vasculature, such as when tracking around the aortic arch, promoting recapturing of the prosthesis.
    Type: Grant
    Filed: August 15, 2013
    Date of Patent: July 8, 2014
    Assignee: Medtronic, Inc.
    Inventors: Don Tran, Nathan Wiemeyer, Susheel Deshmukh, Leonel Mendoza, Matthew Rust
  • Patent number: 8740976
    Abstract: A delivery system for use with a prosthetic heart valve having a stent frame to which a valve structure is attached includes a shaft assembly including a distal portion and an intermediate portion, and an inner lumen extending through the shaft assembly. The delivery system includes a sheath assembly defining an outer lumen sized to slidably receive the shaft assembly. At least one flush port is formed in the intermediate portion. The at least one flush port is in fluid communication with the inner lumen and the outer lumen. The delivery system is configured to transition from a loaded state in which the sheath assembly encompasses the prosthetic heart valve to a deployed state in which the sheath assembly is withdrawn from the prosthetic heart valve.
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: June 3, 2014
    Assignee: Medtronic, Inc.
    Inventors: Don Tran, Nathan Wiemeyer
  • Patent number: 8727996
    Abstract: A delivery device for implanting a medical device that includes an expandable fixation member adapted to fix the position of the medical device within a lumen of a human body. The delivery device has an inner shaft rotatably disposed in a tubular outer shaft. A retention member is secured to and rotatable with the inner shaft and has a free end and a retainer portion adapted to protrude outwardly through an exit aperture in the outer shaft to extend circumferentially about the exterior of the outer shaft. The fixation member of the medical device may be retained on the tubular shaft in a low profile configuration by the outwardly protruding retainer portion and may be released to expand upon retraction of the retainer portion in response to rotation of the inner shaft.
    Type: Grant
    Filed: April 20, 2011
    Date of Patent: May 20, 2014
    Assignee: Medtronic Vascular, Inc.
    Inventors: James Calvin Allan, Don Tran, Erik Griswold, Rudy Beasley, Arvind Srinivas