David Miles Burkett

US Patent:

6419745, Jul 16, 2002

Filed:

Nov 16, 1999

Appl. No.:

09/441695

Inventors:

David Burkett - Temecula CA
Emmanuel Biagtan - Temecula CA

Assignee:

Advanced Cardiovascular Systems, Inc. - Santa Clara CA

International Classification:

B05C 1102

US Classification:

118125, 118420, 118666, 118674

Abstract:

A method and apparatus for applying a polymer coating on an elongated substrate, preferably an elongate intracorporeal device in the form of a guidewire. An extrudable polymer cartridge is moved by a cartridge advancement mechanism into a guide chamber which is heated at an end with a die or orifice through which a desired portion of a guidewire may pass and be coated. Parameters such as guide chamber temperature, pull speed and force exerted by the cartridge advancement mechanism may be controlled with a computer program in order to achieve repeatable results. The guide chamber, extrudable polymer cartridge, die, and push tube may all be made from polymer components which can be reused or disposed of after a single use. The extrudable polymer cartridge may have a variety of configurations including multiple layers of different materials, eccentric shapes, multiple lumens for multiple elements to be drawn through and coated and asymmetric disposition of different materials with respect to the longitudinal axis as viewed in a transverse cross section which can give bending properties having a preferred direction in the coated guidewire or device.

US Patent:

6599557, Jul 29, 2003

Filed:

Jun 4, 2002

Appl. No.:

10/161786

Inventors:

David Burkett - Temecula CA
Emmanuel Biagtan - Temecula CA

Assignee:

Advanced Cardiovascuslar Systems, Inc. - Santa Clara CA

International Classification:

B05D 118

US Classification:

427 21, 427 224, 427 8, 427358, 4274342, 4274344, 4274346

Abstract:

A method and apparatus for applying a polymer coating on an elongated substrate, preferably an elongate intracorporeal device in the form of a guidewire. An extrudable polymer cartridge is moved by a cartridge advancement mechanism into a guide chamber which is heated at an end with a die or orifice through which a desired portion of a guidewire may pass and be coated. Parameters such as guide chamber temperature, pull speed and force exerted by the cartridge advancement mechanism may be controlled with a computer program in order to achieve repeatable results. The guide chamber, extrudable polymer cartridge, die, and push tube may all be made from polymer components which can be reused or disposed of after a single use. The extrudable polymer cartridge may have a variety of configurations including multiple layers of different materials, eccentric shapes, multiple lumens for multiple elements to be drawn through and coated and asymmetric disposition of different materials with respect to the longitudinal axis as viewed in a transverse cross section which can give bending properties having a preferred direction in the coated guidewire or device.

US Patent:

6645159, Nov 11, 2003

Filed:

Nov 30, 1999

Appl. No.:

09/452342

Inventors:

David H. Burkett - Temecula CA

Assignee:

Advanced Cardiovascular Systems, Inc. - Santa Clara CA

International Classification:

A61B 500

US Classification:

600585

Abstract:

A process for joining two discrete wire components without the need of a third component, wherein material from the end of one wire component is removed to form a female end and the end of the other wire is formed into a male end. The male may be secured within the female end by conventional means. The female end may be formed by electrical discharge machining or laser drilling.

US Patent:

6695813, Feb 24, 2004

Filed:

Dec 30, 1999

Appl. No.:

09/476159

Inventors:

William J. Boyle - Fallbrook CA
David H. Burkett - San Diego CA
Andy E. Denison - Temecula CA
Benjamin C. Huter - Murrieta CA
Scott J. Huter - Temecula CA
Arkady Kokish - Los Gatos CA
Kent C. B. Stalker - San Marcos CA
Chicheng Wang - Sunnyvale CA
John D. Whitfield - Temecula CA

Assignee:

Advanced Cardiovascular Systems, Inc. - Santa Clara CA

International Classification:

A61M 2900

US Classification:

604106, 606198, 606200

Abstract:

An embolic protection device includes a filtering assembly having a self-expanding strut assembly and a filter element. The filtering assembly can be attached to a guidewire and deployed within the patients vasculature into an area of treatment. A restraining sheath maintains the filtering assembly in its collapsed position until it is ready to be deployed by the physician. Interventional devices can be delivered over the guidewire and any embolic debris created and released into the blood stream will enter the filtering assembly. The filtering assembly can be rotatably mounted on the guide wire and may include a dampening element which helps to prevent some shock force that may be transmitted along the guide to the deployed filtering assembly.

US Patent:

6695915, Feb 24, 2004

Filed:

Jul 15, 2002

Appl. No.:

10/196673

Inventors:

David Burkett - Temecula CA
Emmanuel Biagtan - Temecula CA

Assignee:

Advanced Cardiovascular Systems, Inc. - Santa Clara CA

International Classification:

B05C 1102

US Classification:

118125, 118420

Abstract:

A method and apparatus for applying a polymer coating on an elongated substrate, preferably an elongate intracorporeal device in the form of a guidewire. An extrudable polymer cartridge is moved by a cartridge advancement mechanism into a guide chamber which is heated at an end with a die or orifice through which a desired portion of a guidewire may pass and be coated. Parameters such as guide chamber temperature, pull speed and force exerted by the cartridge advancement mechanism may be controlled with a computer program in order to achieve repeatable results. The guide chamber, extrudable polymer cartridge, die, and push tube may all be made from polymer components which can be reused or disposed of after a single use. The extrudable polymer cartridge may have a variety of configurations including multiple layers of different materials, eccentric shapes, multiple lumens for multiple elements to be drawn through and coated and asymmetric disposition of different materials with respect to the longitudinal axis as viewed in a transverse cross section which can give bending properties having a preferred direction in the coated guidewire or device.

US Patent:

6702762, Mar 9, 2004

Filed:

Dec 27, 2001

Appl. No.:

10/032873

Inventors:

Mo Jafari - Murrieta CA
David H. Burkett - Temecula CA
Edwin P. Mahieu - Temecula CA
Brad Kellerman - Escondido CA

Assignee:

Advanced Cardiovascular Systems, Inc.

International Classification:

A61B 500

US Classification:

600585

Abstract:

An intravascular guide wire having at least two core materials joined together without the use of a hypotube. There is a core having a proximal core section with a proximal end and a distal end and a distal core section with a proximal end and a distal end. The distal end of the proximal core section and the proximal end of the distal core section are ground into complementary shapes, and then placed into a fixture in opposing directions with a small gap in-between the ends to receive a mass of hardened material to wick therein. Once the proximal and distal core sections are bonded, welded, brazed, cemented, or soldered together, the guide wire is then ground to a required outer diameter, depending on the design needs of the specific guide wire.

US Patent:

6733819, May 11, 2004

Filed:

Jun 2, 2003

Appl. No.:

10/452614

Inventors:

David Burkett - Temecula CA
Emmanuel Biagtan - Temecula CA

Assignee:

Advanced Cardiovascular Systems, Inc. - Santa Clara CA

International Classification:

B05D 118

US Classification:

427 21, 427 224, 427358, 4274342, 4274344, 4274346

Abstract:

A method and apparatus for applying a polymer coating on an elongated substrate, preferably an elongate intracorporeal device in the form of a guidewire. An extrudable polymer cartridge is moved by a cartridge advancement mechanism into a guide chamber which is heated at an end with a die or orifice through which a desired portion of a guidewire may pass and be coated. Parameters such as guide chamber temperature, pull speed and force exerted by the cartridge advancement mechanism may be controlled with a computer program in order to achieve repeatable results. The guide chamber, extrudable polymer cartridge, die, and push tube may all be made from polymer components which can be reused or disposed of after a single use. The extrudable polymer cartridge may have a variety of configurations including multiple layers of different materials, eccentric shapes, multiple lumens for multiple elements to be drawn through and coated and asymmetric disposition of different materials with respect to the longitudinal axis as viewed in a transverse cross section which can give bending properties having a preferred direction in the coated guidewire or device.

US Patent:

7678129, Mar 16, 2010

Filed:

Mar 19, 2004

Appl. No.:

10/805455

Inventors:

Douglas H. Gesswein - Temecula CA, US
David K. Wrolstad - Temecula CA, US
David H. Burkett - Temecula CA, US
Robert C. Esselstein - Fallbrook CA, US
Kathern J. Lind - Temecula CA, US
Pablito Buan - Temecula CA, US
Robert C. Hazelden - Temecula CA, US
Thomas Tokarchik, III - Murrieta CA, US
Ryan Grandfield - Murrieta CA, US
Aaron Baldwin - Temecula CA, US
Wayne E. Cornish - Fallbrook CA, US
Philip S. Yip - San Jose CA, US

Assignee:

Advanced Cardiovascular Systems, Inc. - Santa Clara CA

International Classification:

A61M 290/00

US Classification:

606200, 600585

Abstract:

A locking component for locking a medical device onto a guide wire. Such medical devices include, for example, an embolic filter assembly used to capture embolic material that may be created and released into a patient's vasculature during a stenting or angioplasty procedure. The embolic filter assembly tracks along the guide wire, and is delivered to a treatment site where it is locked in place and deployed. The locking component enables the filter assembly to lock onto any standard guide wire, and does not require a modified guide wire that has a specially-designed fitting or stop to accomplish the locking function.