Dinh Ngoc Nguyen

US Patent:

20130085520, Apr 4, 2013

Filed:

Sep 29, 2011

Appl. No.:

13/249203

Inventors:

Jessica LIANG - Irvine CA, US
Dinh NGUYEN - Garden Grove CA, US
David Scott BECKHAM - Costa Mesa CA, US
Christopher Charles ANDREWS - Lake Elsinore CA, US

Assignee:

TYCO HEALTHCARE GROUP LP - Mansfield MD

International Classification:

A61M 29/00

US Classification:

606195

Abstract:

A medical device detachment system receives an elongate delivery member, having a lumen, and an elongate core member. The system includes a housing, a user input mechanism for receiving a user input to effect detachment of a medical device, such as an embolic coil, from a distal end of the delivery member, and a grasping mechanism for grasping and moving a proximal end of the core member relative to a proximal end of the delivery member. The system also includes a first sensor detecting positioning of the proximal end of the core member within the housing, and a second sensor, detecting movement of the grasping mechanism. An indicator is connected to the first and second proximity sensors and provides feedback to a user.

US Patent:

20200297367, Sep 24, 2020

Filed:

May 13, 2020

Appl. No.:

15/929630

Inventors:

- Mansfield MA, US
Dinh Nguyen - Garden Grove CA, US
Hoai Nguyen - Westminster CA, US

International Classification:

A61B 17/22
A61F 2/95
A61B 17/221

Abstract:

Retrieval of material from vessel lumens can be improved by electrically enhancing attachment of the material to the removal device. The removal device can have a core assembly that includes a hypotube coupled to a first electrical terminal and a pushwire coupled to a second electrical terminal, the pushwire extending through the hypotube lumen. An insulating layer separates the hypotube and the pushwire, and an interventional element is coupled to a distal end of the pushwire. The interventional element can be disposed adjacent to a thrombus. An electrical signal is delivered to the interventional element to promote adhesion of the thrombus to the interventional element. The electrical signal can optionally be a periodic waveform, and the total energy delivered can be between 0.75-24,000 mJ and the peak current delivered via the electrical signal can be between 0.5-5 mA.

US Patent:

20190175200, Jun 13, 2019

Filed:

Dec 11, 2017

Appl. No.:

15/838230

Inventors:

- Mansfield MA, US
Dinh Nguyen - Garden Grove CA, US
Hoai Nguyen - Santa Ana CA, US

International Classification:

A61B 17/22
A61F 2/95

Abstract:

Retrieval of material from vessel lumens can be improved by electrically enhancing attachment of the material to the removal device. The removal device can have a core assembly that includes a hypotube coupled to a first electrical terminal and a pushwire coupled to a second electrical terminal, the pushwire extending through the hypotube lumen. An insulating layer separates the hypotube and the pushwire, and an interventional element is coupled to a distal end of the pushwire. The interventional element can be disposed adjacent to a thrombus. An electrical signal is delivered to the interventional element to promote adhesion of the thrombus to the interventional element. The electrical signal can optionally be a periodic waveform, and the total energy delivered can be between 0.75-24,000 mJ and the peak current delivered via the electrical signal can be between 0.5-5 mA.