James Qingwu Feng

US Patent:

7691431, Apr 6, 2010

Filed:

Mar 7, 2006

Appl. No.:

11/368538

Inventors:

James Feng - Brooklyn Park MN, US
Narin Anderson - Eden Prairie MN, US
Tom Eidenschink - Rogers MN, US

Assignee:

Boston Scientific Scimed, Inc. - Maple Grove MN

International Classification:

B05C 11/08
B05D 1/02
B05D 1/40
B05D 7/14
B05B 13/02

US Classification:

427 224, 427 21, 427 225, 4274211, 427425, 4274271, 118 52, 118 53, 118319, 118320

Abstract:

A system is provided for spray coating medical devices, comprising a rotary atomizer with one or more rotary heads and a plurality of holders to hold a plurality of medical devices, such as stents, wherein the holders are positioned around a longitudinal axis of the rotary head. A method of using such a system is also provided. The invention enables the use of rotary atomizers to coat small medical devices with reduced waste of coating material and allows increased production throughput by the coating of multiple devices simultaneously. The rotary atomizer may be an electrostatic rotary atomizer. The holders and/or a holding structure on which the holders are mounted may move relative to the rotary atomizer.

US Patent:

7908016, Mar 15, 2011

Filed:

Sep 24, 2008

Appl. No.:

12/237121

Inventors:

L. Liliana Atanasoska - Edina MN, US
James Q. Feng - Maple Grove MN, US
Robert W. Warner - Woodbury MN, US

Assignee:

Cardiac Pacemakers, Inc. - St. Paul MN

International Classification:

A61N 1/05

US Classification:

607122

Abstract:

A biomimetic electrode material including a fibrous matrix including a conductive polymer and an ion conducting polymeric material is described. The biomimetic electrode material may be used in a number of body-implantable application including cardiac and neuro-stimulation applications. The biomimetic electrode material can be formed using electrospinning and other related processes. The biomimetic electrode may facilitate efficient charge transport from ionically conductive tissue to the electronically conductive electrode and may induce surrounding tissue to attach or interface directly to the implanted device, increasing the biocompatibility of the device.

US Patent:

8048150, Nov 1, 2011

Filed:

Apr 12, 2006

Appl. No.:

11/403344

Inventors:

Jan Weber - Maple Grove MN, US
James Q. Feng - Maple Grove MN, US
Liliana Atanasoska - Edina MN, US

Assignee:

Boston Scientific SciMed, Inc. - Maple Grove MN

International Classification:

A61F 2/06

US Classification:

623 142, 623 115, 623 143

Abstract:

The present invention comprises a medical device having an underlying structure on which is disposed a fiber meshwork composed of one or more fibers of substantially uniform diameter. The fiber meshwork may optionally have a multi-layer structure disposed upon it. Either or both of the fiber meshwork or the multi-layer structure may have one or more therapeutic agents absorbed within it. The fiber meshwork is permeable to body fluids and thereby permits body fluids to contact the underlying structure to facilitate its controlled disintegration. The fiber meshwork degrades more slowly than the underlying structure thereby permitting release of the therapeutic agent over a timescale longer than that of the lifetime of the underlying structure, while also ensuring that the support function of the underlying structure is not abrogated by the disintegration of the underlying structure.

US Patent:

8137293, Mar 20, 2012

Filed:

Nov 17, 2009

Appl. No.:

12/620343

Inventors:

Pu Zhou - Maple Grove MN, US
Hancun Chen - Maple Grove MN, US
James Feng - Maple Grove MN, US

Assignee:

Boston Scientific Scimed, Inc. - Maple Grove MN

International Classification:

A61B 5/00
A61M 25/00
C22C 28/00
C22C 19/05

US Classification:

600585, 420417, 420446

Abstract:

Medical devices and methods for making and using the same are disclosed. An example medical device may include a guidewire. The guidewire may include an elongate shaft. The shaft may include a porous metal alloy. The porous metal alloy may be arranged so that the porous metal alloy has a first pore distribution along a first portion of the shaft and a second pore distribution different from the first pore distribution along a second portion of the shaft.

US Patent:

8267992, Sep 18, 2012

Filed:

Mar 2, 2010

Appl. No.:

12/715577

Inventors:

Liliana Atanasoska - Edina MN, US
Tom Holman - Princeton MN, US
Michael S. Arney - Minneapolis MN, US
Victor Schoenle - Greenfield MN, US
Frank Genovese - Longboat FL, US
James Q. Feng - Maple Grove MN, US
Aiden Flanagan - Co. Galway, IE
Jan Weber - Maastricht, NL

Assignee:

Boston Scientific Scimed, Inc. - Maple Grove MN

International Classification:

A61F 2/06

US Classification:

623 142, 623 138, 623 146

Abstract:

A medical implant includes a bioerodible portion that includes a bioerodible polymer and a bioerodible metal. The bioerodible polymer matrix degrades under physiological conditions to form acidic degradation products. The bioerodible metal degrades under physiological conditions to form basic degradation products. The acidic degradation products and the basic degradation products buffer at least a portion of the medical implant. In one aspect, the bioerodible portion includes a bioerodible polymer matrix and a bioerodible metal within the bioerodible polymer matrix. In another aspect, the medical implant can include a body, a plurality of discrete deposits of the bioerodible polymer on the body, and a plurality of discrete deposits of the bioerodible metal on the body.

US Patent:

8417356, Apr 9, 2013

Filed:

Jan 19, 2011

Appl. No.:

13/009655

Inventors:

Jeannette C. Polkinghorne - Spring Lake Park MN, US
Robert W. Warner - Woodbury MN, US
James Q. Feng - Maple Grove MN, US
Ljiljana Liliana Atanasoska - Edina MN, US

Assignee:

Cardiac Pacemakers Inc. - St. Paul MN

International Classification:

A61N 1/05

US Classification:

607122

Abstract:

A biomimetic electrode material including a fibrous matrix including a conductive polymer and an ion conducting polymeric material is described. The biomimetic electrode material may be used in a number of body-implantable applications including cardiac and neuro-stimulation applications. The biomimetic electrode material can be formed using electrospinning and other related processes. The biomimetic electrode may facilitate efficient charge transport from ionically conductive tissue to the electronically conductive electrode, and may induce surrounding tissue to attach or interface directly to the implanted device, increasing the biocompatibility of the device.

US Patent:

8430059, Apr 30, 2013

Filed:

Jun 11, 2008

Appl. No.:

12/137235

Inventors:

Timothy J. Mickley - Elk River MN, US
Frank Genovese - Longboat Key FL, US
James Feng - Maple Grove MN, US
Leonard B. Richardson - Brooklyn Park MN, US

Assignee:

Boston Scientific Scimed, Inc. - Maple Grove MN

International Classification:

B05C 11/00
G01D 15/16

US Classification:

118663, 118697, 118401, 118410

Abstract:

An apparatus for precision pen height control which includes a dispensing member, a fluid dispensing system, a vertical position sensing system, and a vertical position controller. The fluid dispensing system is in fluid communication with an opening in the dispensing member via a tubular member. A vertical position sensing system, which includes a diffraction grating and a sensor, is engaged to the tubular member. The sensor is positioned adjacent the diffraction grating. The diffraction grating is engaged to a vertical support, which is engaged to the tubular member. The sensor produces a vertical position signal based upon the position of the vertical support. The vertical position controller is engaged to the vertical position sensing system, and receives a control signal generated from the vertical position signal. The vertical position controller produces and applies vertical forces to the vertical support in response to the control signal.

US Patent:

8491615, Jul 23, 2013

Filed:

Dec 23, 2011

Appl. No.:

13/336654

Inventors:

Chris Manderfeld - St. Michael MN, US
James Feng - Maple Grove MN, US

Assignee:

Boston Scientific Scimed, Inc. - Maple Grove MN

International Classification:

A61B 17/22

US Classification:

606159, 606167, 606194

Abstract:

A medical balloon catheter including a catheter shaft and an inflatable balloon secured to a distal portion of the catheter shaft. One or more cutting blades are secured to the inflatable balloon by a first polymeric adhesive material forming a mounting pad encasing a base portion of the cutting blade therein, and a second polymeric adhesive material adhesively bonding the mounting pad to a surface of the balloon. The first polymeric adhesive material has a first ductility and the second polymeric adhesive material has a second ductility greater than the first ductility.