Duy Huu Nguyen

8182467, May 22, 2012

Sep 29, 2009

12/569786

Duy Nguyen - Corona CA, US
Sheldon Nelson - Plymouth MN, US
Elizabeth Nee - Minneapolis MN, US
Guy P. Vanney - Blaine MN, US

St. Jude Medical, Atrial Fibrillation Division, Inc. - St. Paul MN

A61B 5/04
A61B 18/18
A61M 25/00
A61M 31/00
A61M 37/00

604528, 600374, 600585, 604523, 604 9504, 606 41

The invention provides a deflectable catheter capable of forming many variable radius spiral forms from a single, flexible, distal end section. In one aspect, the catheter employs a variable radius control wire to extend or deform a pre-formed loop structure into a three dimensional spiral-like form or geometry. The ability of a single catheter to create a multitude of shapes and sizes allows users to access to a number of anatomical areas without changing the catheter during a procedure or treatment. In another aspect, the invention encompasses methods of producing deflectable variable radius catheters, where two or more regions of the catheter having common control wires are fused or formed onto one another.

20070270679, Nov 22, 2007

Dec 29, 2006

11/647311

Duy Nguyen - Corona CA, US
Sheldon Nelson - Plymouth MN, US
Elizabeth Nee - Minneapolis MN, US
Guy Vanney - Blaine MN, US

A61M 25/00

600373000, 600585000, 604523000

The invention provides a deflectable catheter capable of forming many variable radius spiral forms from a single, flexible, distal end section. In one aspect, the catheter employs a variable radius control wire to extend or deform a pre-formed loop structure into a three dimensional spiral-like form or geometry. The ability of a single catheter to create the multitude of shapes and sizes possible allows users to access a greater number of anatomical areas without changing the catheter during a procedure or treatment. In another aspect, the invention encompasses methods of producing deflectable variable radius catheters, where two or more regions of the catheter having common control wires are fused or formed onto one another.

20080065205, Mar 13, 2008

Sep 11, 2006

11/519519

Duy Nguyen - Corona CA, US
Kim Nguyen - Irvine CA, US

A61F 2/24

623 236

The invention is a device, and method for deploying same, configured for placement in a body lumen such as a coronary sinus, as may be desired to repair a mitral valve. The device includes a first anchor, a second anchor, and a bridge. The anchors are configured to delivered to a desired deployment site within the body lumen in a collapsed or contracted condition, and then be deployed by expanding the anchors into contact with the walls of the body lumen. One or more of the anchors may be configured to be radially collapsible after initial deployment in order to permit the anchor(s) to be repositioned in or removed from the body lumen. An anchor may be collapsible in response to a distal force applied to a portion of a proximal end thereof. A catheter for use with the implant is configured to deliver the implant to the site with the anchors in their respective collapsed configurations, and to release the anchors to permit them to expand into contact with the walls of the body lumen. The catheter is configured to apply a proximal force to one or both anchors, which may be applied via a cinch wire. The catheter may also be configured to apply a distal force against a portion of the proximal end of one or more of the anchors.

20080255447, Oct 16, 2008

Apr 16, 2007

11/735722

Henry Bourang - Irvine CA, US
William R. Wertenberg - Newport Beach CA, US
Ronald J. Hosmer - Mission Viejo CA, US
Christopher Buller - Vancouver, CA
Duy Nguyen - Corona CA, US

A61M 25/01

600434

A diagnostic catheter having both a guidewire lumen and at least one contrast lumen is disclosed. In one embodiment, the contrast lumens allow the user to deliver contrast to a target area within the patient without removing the guidewire. Preferably, a plurality of contrast exit ports are included along the length of the catheter body to evenly and consistently distribute contrast into the blood stream, thereby providing improved visualization during radioscopy.

20100094392, Apr 15, 2010

Oct 10, 2008

12/249867

Duy Nguyen - Corona CA, US
Kim Nguyen - Irvine CA, US

Edwards Lifesciences Corporation - Irvine CA

A61F 2/06
A61B 19/00

623 111, 128898

Embodiments of an expandable sheath can be used in conjunction with a catheter assembly to introduce a prosthetic device, such as a tissue heart valve, into a patient. Such embodiments can minimize trauma to the vessel by allowing for temporary expansion of a portion of the introducer sheath to accommodate the delivery apparatus, followed by a return to the original diameter once the prosthetic device passes through. Some embodiments can comprise a sheath with inner and outer tubular layers, and an intermediate tubular layer comprising a shape memory alloy. Other embodiments comprise one or more layers having one or more longitudinal notches or cuts to facilitate expansion of the sheath. Embodiments of the present expandable sheath can avoid the need for multiple insertions for the dilation of the vessel, thus offering advantages over prior art introducer sheaths.

20120083877, Apr 5, 2012

Dec 6, 2011

13/312739

Duy Nguyen - Corona CA, US
Kim Nguyen - Irvine CA, US
Thanh V. Nguyen - Irvine CA, US

A61F 2/24
B29C 53/08

623 211, 156211

Embodiments of an expandable sheath can be used in conjunction with a catheter assembly to introduce a prosthetic device, such as a heart valve, into a patient. Such embodiments can minimize trauma to the vessel by allowing for temporary expansion of a portion of the introducer sheath to accommodate the delivery apparatus, followed by a return to the original diameter once the prosthetic device passes through. Some embodiments can include a sheath with inner and outer layers, where a folded portion of the inner layer extends through a slit in the outer layer and a portion of the outer layer overlaps the folded portion of the inner layer. Some embodiments include an elastic outer cover positioned outside the outer layer. Embodiments of the present expandable sheath can avoid the need for multiple insertions for the dilation of the vessel, thus offering advantages over prior art introducer sheaths.

20120184901, Jul 19, 2012

Mar 26, 2012

13/430428

Duy Nguyen - Corona CA, US
Sheldon Nelson - Plymouth MN, US
Elizabeth Nee - Minneapolis MN, US
Guy P. Vanney - Blaine MN, US

A61M 25/092

604 9504

The invention provides a deflectable catheter capable of forming many variable radius spiral forms from a single, flexible, distal end section. In one aspect, the catheter employs a variable radius control wire to extend or deform a pre-formed loop structure into a three dimensional spiral-like form or geometry. The ability of a single catheter to create a multitude of shapes and sizes allows users to access to a number of anatomical areas without changing the catheter during a procedure or treatment. In another aspect, the invention encompasses methods of producing deflectable variable radius catheters, where two or more regions of the catheter having common control wires are fused or formed onto one another.

20230103647, Apr 6, 2023

Oct 18, 2022

18/047503

- Anaheim CA, US
Duy Nguyen - Anaheim CA, US
Tung Hoang Ngo - Anaheim CA, US

A61B 17/221
A61F 2/01
A61B 17/3207
A61M 1/00

Systems and methods can remove material of interest, including blood clots, from a body region, including but not limited to the circulatory system for the treatment of pulmonary embolism (PE), deep vein thrombosis (DVT), cerebrovascular embolism, and other vascular occlusions.