Jeong W Lee

US Patent:

6579484, Jun 17, 2003

Filed:

Dec 16, 1999

Appl. No.:

09/464932

Inventors:

Stephen J. Tiernan - Palo Alto CA
Jeong S. Lee - Diamond Bar CA
Mina W. B. Chow - Campbell CA
Stephen G. Schaible - Anaheim CA

Assignee:

Advanced Cardiovascular Systems, Inc. - Santa Clara CA

International Classification:

B29C 4706

US Classification:

26417316, 2642094, 2642095

Abstract:

An apparatus and method for providing a co-extruded, tapered multi-layer shaft. A co-extruded, tapered multi-layer shaft may be fabricated by selecting a first material for the inner layer of the shaft and a second material for the outer layer of the shaft. The first and second materials are then co-extruded by a co-extrusion system including a puller with programmable tapering capabilities. The system forms a hollow tubing having an inner layer and an outer layer, wherein the tubing has the desired tapered characteristics. The result is a tapered tubular shaft having an inner layer and an outer layer.

US Patent:

6946173, Sep 20, 2005

Filed:

Mar 21, 2002

Appl. No.:

10/103274

Inventors:

Florencia Lim - Union City CA, US
Chi Le Long - San Jose CA, US
Charles D. Claude - Santa Clara CA, US
Jeong S. Lee - Diamond Bar CA, US
Srinivasan Sridharan - Morgan Hill CA, US
Fernando Gonzalez - Campbell CA, US
Edwin Wang - Tustin CA, US

Assignee:

Advanced Cardiovascular Systems, Inc. - Santa Clara CA

International Classification:

B32B001/08
A61M025/10
A61M029/00

US Classification:

428 352, 428 341, 428 357, 428 365, 428 368, 428 369, 428 3691, 604 9601, 60410305, 60410306, 60410308, 60410311, 60410313, 604264, 604523

Abstract:

A catheter balloon formed of a polymeric material such as expanded polytetrafluoroethylene (ePTFE) bonded to a second layer formed of a low tensile set polymer and/or impregnated with a low tensile set polymer. In a presently preferred embodiment, the low tensile set polymer is a silicone-polyurethane copolymer elastomer or a diene polymer elastomer. The low tensile set polymer has high strength, low modulus, high elongation, and low tensile set. The diene or silicone-polyurethane has a low tensile set, which facilitates deflation of the balloon to a low profile deflated configuration. One aspect of the invention provides improved attachment of the diene to the ePTFE. In one embodiment, the second layer is formed of a diene mixed with a bonding promoter such as a vulcanizing agent which is covalently bonded to the diene.

US Patent:

7037295, May 2, 2006

Filed:

May 20, 2003

Appl. No.:

10/442554

Inventors:

Stephen J. Tiernan - Palo Alto CA, US
Jeong S. Lee - Diamond Bar CA, US
Mina W. B. Chow - Campbell CA, US
Stephen G. Schaible - Anaheim CA, US

Assignee:

Advanced Cardiovascular Systems, Inc. - Santa Clara CA

International Classification:

A61M 25/00

US Classification:

604264, 604525, 606194, 428 357, 428 3691

Abstract:

An apparatus and method for providing a co-extruded, tapered multi-layer shaft. A co-extruded, tapered multi-layer shaft may be fabricated by selecting a first material for the inner layer of the shaft and a second material for the outer layer of the shaft. The first and second materials are then co-extruded by a co-extrusion system including a puller with programmable tapering capabilities. The system forms a hollow tubing having an inner layer and an outer layer, wherein the tubing has the desired tapered characteristics. The result is a tapered tubular shaft having an inner layer and an outer layer.

US Patent:

7147619, Dec 12, 2006

Filed:

Jul 22, 2002

Appl. No.:

10/200274

Inventors:

Florencia Lim - Union City CA, US
Jeong S. Lee - Diamond Bar CA, US
Edwin Wang - Tustin CA, US

Assignee:

Advanced Cardiovascular Systems, Inc. - Santa Clara CA

International Classification:

A61M 29/02

US Classification:

60410306, 604103, 604 9601, 606194

Abstract:

A balloon catheter and a method of making a balloon catheter, having a balloon with a first layer and a second layer, the first layer having at least one impregnated section impregnated with a polymeric material compatible with a polymeric material forming the catheter shaft. At least a portion of the impregnated section is fusion bonded to the shaft. In a presently preferred embodiment, the impregnated section is adjacent to a section of the first layer which is not impregnated with the compatible polymeric material. The impregnated section provides improved bonding of the balloon to the catheter shaft while minimizing the effect of the bond on catheter performance characteristics such as profile and flexibility.

US Patent:

7981244, Jul 19, 2011

Filed:

Oct 23, 2006

Appl. No.:

11/585071

Inventors:

Florencia Lim - Union City CA, US
Jeong S Lee - Diamond Bar CA, US
Edwin Wang - Tustin CA, US

Assignee:

Abbott Cardiovascular Systems Inc. - Santa Clara CA

International Classification:

B29C 65/00
B32B 37/00

US Classification:

1563082, 156294, 604 9601, 604103, 606194

Abstract:

A balloon catheter and a method of making a balloon catheter, having a balloon with a first layer and a second layer, the first layer having at least one impregnated section impregnated with a polymeric material compatible with a polymeric material forming the catheter shaft. At least a portion of the impregnated section is fusion bonded to the shaft. In a presently preferred embodiment, the impregnated section is adjacent to a section of the first layer which is not impregnated with the compatible polymeric material. The impregnated section provides improved bonding of the balloon to the catheter shaft while minimizing the effect of the bond on catheter performance characteristics such as profile and flexibility.

US Patent:

20060029756, Feb 9, 2006

Filed:

Aug 5, 2005

Appl. No.:

11/198623

Inventors:

Florencia Lim - Union City CA, US
Chi Long - San Jose CA, US
Charles Claude - Santa Clara CA, US
Jeong Lee - Diamond Bar CA, US
Srinivasan Sridharan - Morgan Hill CA, US
Fernando Gonzalez - Campbell CA, US
Edwin Wang - Tustin CA, US

International Classification:

B32B 27/32

US Classification:

428035200, 604103060, 606194000

Abstract:

A catheter balloon formed of a polymeric material such as expanded polytetrafluoroethylene (ePTFE) bonded to a second layer formed of a low tensile set polymer and/or impregnated with a low tensile set polymer. In a presently preferred embodiment, the low tensile set polymer is an elastomer selected from the group consisting of a silicone-polyurethane copolymer and a diene polymer. The low tensile set polymer has high strength, low modulus, high elongation, and low tensile set, to provide improved balloon performance. The diene or silicone-polyurethane has a low tensile set, which facilitates deflation of the balloon to a low profile deflated configuration. One aspect of the invention provides improved attachment of the diene to the ePTFE. In one embodiment, the second layer is formed of a diene mixed with a bonding promoter such as a vulcanizing agent which is covalently bonded to the diene.

US Patent:

20060135985, Jun 22, 2006

Filed:

Dec 21, 2004

Appl. No.:

11/022548

Inventors:

Daniel Cox - Palo Alto CA, US
Jeffrey Ellis - San Francisco CA, US
Jeong Lee - Diamond Bar CA, US
Klaus Kleine - Los Gatos CA, US
Alan Tannier - Temecula CA, US

International Classification:

A61M 29/00

US Classification:

606194000

Abstract:

A method including introducing an expandable body into a blood vessel at a point coextensive with a vulnerable plaque lesion, and expanding the expandable body from a first diameter to a different second diameter sufficient to modify the shape of an inner diameter of the blood vessel at the point coextensive with the lesion without rupturing the lesion. An apparatus including a cannula having a dimension suitable for insertion into a blood vessel and including an expandable body coupled thereto, the expandable body including a first outer diameter suitable for insertion through the blood vessel and a second outer diameter greater than the first diameter and having a maximum dimension to modify the shape of an inner diameter of the blood vessel and retain a same perimeter. A kit including a cannula including an expandable body and a stent. An expandable framework comprising a polymer material. An apparatus including an expandable body.

US Patent:

20070198043, Aug 23, 2007

Filed:

Feb 22, 2006

Appl. No.:

11/360324

Inventors:

Daniel Cox - Palo Alto CA, US
Eugene Michal - San Francisco CA, US
Robert Ainsworth - Scotts Valley CA, US
Gregory Chan - San Francisco CA, US
Jeong Lee - Diamond Bar CA, US
Albert Chin - Palo Alto CA, US
Geoff Willis - Mountain View CA, US
Philip Yip - Santa Clara CA, US

International Classification:

A61B 17/34
A61M 5/32
A61B 10/00

US Classification:

606185000, 604272000, 600564000

Abstract:

A bone marrow aspiration device is described. In one embodiment, the bone marrow aspiration device includes a central body portion having a proximal end and a distal end, and an outer shaft portion coupled to the distal end of the central body portion. The outer shaft portion also has a distal opening. A first lumen is formed by the central body portion and the outer shaft portion, and the first lumen extends from the proximal end to the distal opening. An aspiration needle is disposed within the first lumen. The aspiration needle has a substantially linear configuration when positioned within the first lumen, and a substantially curved configuration when extended from the distal opening. The aspiration needle is adapted to aspirate liquid bone marrow from a first region of a bone cavity.