Erik T Engelson

US Patent:

6344041, Feb 5, 2002

Filed:

Oct 26, 2001

Appl. No.:

09/699267

Inventors:

David Kupiecki - Cupertino CA 95014
Clifford Teoh - Daly City CA 94015
Hong Doan - Santa Clara CA 95051
Son M. Gia - San Jose CA 95111
Erik T. Engelson - Menlo Park CA 94025
Uriel Hiram Chee - San Carlos CA 94030
Mehran Bashiri - Fremont CA 94536
Joseph C. Eder - Los Altos CA 94022

International Classification:

A61B 1804

US Classification:

606 32, 606191, 606198, 606200, 604104

Abstract:

This is an artificial occlusion kit for implanting and retaining an artificial occlusion device in a body space adjacent to and extending from a body lumen in a mammal. The includes at least one occlusion device and a retaining device for blocking the migration of the occlusion device out of the occlusion site. The retaining device is radially expandable at a retaining site adjacent the body space to be occluded to a diameter that is sufficient to engage the body lumen wall at the retaining site and form a barrier across the entrance zone of the body space to be occluded. The expanded retaining device also forms a lumen for flow through body lumen at the retaining site. At least one semi-penetrable space may also be provided in the retaining device, allowing introduction of occlusion devices into the body space to be occluded, but preventing subsequent migration of the occlusion devices out of the body space. This semi-penetrable space may also be distensible to allow for delivery of occlusion devices therethrough. An introducer wire or a tapered-tip delivery catheter may be used to distend the distensible space and deliver the occlusion devices.

US Patent:

6468266, Oct 22, 2002

Filed:

Aug 22, 2000

Appl. No.:

09/644244

Inventors:

Mehran Bashiri - San Carlos CA
Michael P. Wallace - Pleasanton CA
Pete Phong Pham - Fremont CA
Cong Thach - Fremont CA
Chad C. Roue - Fremont CA
Joseph C. Eder - Los Altos Hills CA
Erik T. Engelson - Menlo Park CA

Assignee:

SciMed Life Systems, Inc. - Maple Grove MN

International Classification:

A61F 1100

US Classification:

606 1, 606108

Abstract:

This is an implant for placement in the human body and an assembly for so placing that implant. Most desirably, it is an implant for use in the vasculature of the human body and is used to occlude some space in that vasculature as a portion of a treatment regimen. The implant itself is preferably a component of a deployment device using an electrolytically severable joint. The implant is electrically isolated from the electrolytically severable joint by a highly resistive or insulative layer. Such isolation and minimization of the conductive pathway from the placement apparatus to the bodys fluids appears to enhance the susceptibility of the electrolytic joint to quick erosion and detachment of the implant from the deployment media. Although the implant itself is preferably a vaso-occlusive device, it may instead be a stent, a vena cava filter, or other implant which may be installed in this manner.

US Patent:

6589236, Jul 8, 2003

Filed:

Feb 28, 2002

Appl. No.:

10/086172

Inventors:

E. Thomas Wheelock - Los Altos CA 94022
Erik T. Engelson - Menlo Park CA 94025
Harold F. Carrison - Pleasanton CA 94566

International Classification:

A61B 1814

US Classification:

606 32, 606108, 606191

Abstract:

This invention is an apparatus for the formation of occlusions in spaces in the human body, occluding such as thrombi in arteries, veins, aneurysms, vascular malformations and arteriovenous fistulas. In particular, it deals with a one piece assembly having an improved electrolytically erodable link to an occlusive member and further having an incorporated return electrode in the assembly. The occlusion-forming member is introduced to and is intended to remain at the desired occlusion site. The invention also relates to the joint itself. The invention further includes a method for introduction and electrolytic separation of the device.

US Patent:

6706025, Mar 16, 2004

Filed:

Feb 28, 2001

Appl. No.:

09/796776

Inventors:

Erik T. Engelson - Menlo Park CA
Robert Hergenrother - Fremont CA
Joseph Eder - Los Altos CA

Assignee:

Target Therapeutics, Inc. - Fremont CA

International Classification:

A61M 2500

US Classification:

604265

Abstract:

This invention is in the general field of surgical instruments. It relates specifically to catheters which may be used in cardiovascular and endovascular procedures to deliver diagnostic, therapeutic, or vaso-occlusive agents to a target site within a human or animal body which is accessible by a system of natural passageways within that body. The catheters are coated in such a way that they are exceptionally slippery and the coating is very durable. The invention also relates to methods of coating the catheters and to methods of applying lubricious coatings.

US Patent:

6824553, Nov 30, 2004

Filed:

Aug 25, 2000

Appl. No.:

09/648378

Inventors:

Gene Samson - Milpitas CA
Uriel Hiram Chee - San Carlos CA
Kim Nguyen - San Jose CA
Edward J. Snyder - San Jose CA
Erik T. Engelson - Menlo Park CA

Assignee:

Target Therapeutics, Inc. - Fremont CA

International Classification:

A61M 2900

US Classification:

606192, 604282

Abstract:

This is a catheter assembly and a section of that catheter assembly. That catheter assembly may be used in accessing a tissue target within the body, typically a target which is accessible through the vascular system. Central to the invention is the use of a braided metallic reinforcing member, typically of super-elastic alloy ribbon, situated within the catheter body in such a way to create a catheter having an exceptionally thin wall, controlled stiffness, high resistance to kinking, and complete recovery in vivo from kinking situations. The braid may have a single pitch or may vary in pitch along the axis of the catheter or catheter section. The braided ribbon reinforcing member typically is placed between a flexible outer tubing member and an inner tubing member to produce a catheter section which is very flexible but highly kink resistant. The catheter sections made according to this invention may be used alone or in conjunction with other catheter sections either made using the concepts shown herein or made in other ways. The more proximal sections of the catheter assembly are often substantially stiffer than the more distal sections due to the presence of stiff polymeric tubing or metallic tubing or composited materials in the stiffer section.

US Patent:

7128736, Oct 31, 2006

Filed:

Apr 13, 2000

Appl. No.:

09/548644

Inventors:

Robert M. Abrams - Sunnyvale CA, US
Erik T. Engelson - Menlo Park CA, US
John B. Pedersen - Danville CA, US
Harold F. Carrison - Pleasanton CA, US

Assignee:

Boston Scientific Scimed, Inc. - Maple Grove MN

International Classification:

A61B 17/00

US Classification:

606 1, 606108, 606191, 606213

Abstract:

This is a device for bridging the neck of either an aneurysm in the vasculature and stabilizing the presence of vaso-occlusive devices (such as helically wound coils) in that aneurysm. The closure patch may be delivered either from the exterior of the distal end of a catheter or delivered from the catheter lumen. It is preferably implanted by the severance of an included electrolytically severable joint. The retainer assembly itself typically has a number of radially projecting elements which are, in turn, attached to a scrim-like fabric, preferably collagen-coated Dacron, extending among the various radially projecting elements. The closure patch is intended to be resident within the aneurysm after it is deployed. After deployment, the aneurysm may be at least partially filled with vaso-occlusive devices such as helically wound coils.

US Patent:

7883474, Feb 8, 2011

Filed:

Apr 30, 1996

Appl. No.:

08/640259

Inventors:

Gregory E. Mirigian - Fremont CA, US
Harold E. Carrison - Pleasanton CA, US
Laurent Schaller - Los Altos CA, US
Erik T. Engelson - Menlo Park CA, US

Assignee:

Target Therapeutics, Inc. - Fremont CA

International Classification:

A61M 25/00

US Classification:

600585

Abstract:

This is a composite guidewire for use with a catheter for accessing a targeted site in a lumen system of a patient's body. The guidewire core or guidewire section may be of a stainless steel or a high elasticity metal alloy, preferably a Ni—Ti alloy, also preferably having specified physical parameters. The composite guidewire assembly is especially useful for accessing peripheral or soft tissue targets. The invention includes multi-section guidewire assemblies having super-elastic alloy or stainless steel ribbon braided reinforcements along a least a portion of the core. A variation of the inventive guidewire includes a braid and a tie layer (and one or more lubricious polymers on the tie layer exterior) to enhance the guidewire's suitability for use within catheters and within the interior of vascular lumen.

US Patent:

7972330, Jul 5, 2011

Filed:

Dec 20, 2006

Appl. No.:

11/613415

Inventors:

Jose Alejandro - Sunnyvale CA, US
Mark E. Deem - Mountain View CA, US
Erik Engelson - Menlo Park CA, US
Dominique Filloux - Redwood City CA, US
Dan Francis - Mountain View CA, US
Hanson Gifford - Woodside CA, US
Kenneth Horne - San Francisco CA, US
Uday N. Kumar - San Francisco CA, US
William Malecki - San Francisco CA, US
Miriam H. Taimisto - San Jose CA, US
Venkata Vegesna - Sunnyvale CA, US

Assignee:

Terumo Kabushiki Kaisha - Tokyo

International Classification:

A61B 18/14

US Classification:

606 41, 606216

Abstract:

Methods and apparatus for treatment of layered tissue defects such as a patent foramen ovale provide for applying energy to tissues adjacent to the PFO with a closure device that substantially closes the PFO. Apparatus generally includes an elongate flexible member having a proximal end and a distal end and an energy transmission member deployable from the elongate flexible member. The energy transmission member applies energy to the layered tissue defect at a first position and a second position adjacent to the first position so as to substantially close the layered tissue defect along at least a portion of the defect. Applied energy may be monopolar or bipolar radiofrequency energy or any other suitable energy, such as laser, microwave, ultrasound, resistive heating, direct heat energy, cryogenic or the like. PFO closure via energy-based approaches of the invention may help prevent stroke, treat migraine headache, and possibly treat or prevent other medical conditions.