Raymond C Leonard

US Patent:

20010039450, Nov 8, 2001

Filed:

Feb 5, 2001

Appl. No.:

09/777091

Inventors:

Dusan Pavcnik - Portland OR, US
Frederick Keller - Portland OR, US
Josef Rosch - Portland OR, US
Thomas Osborne - Bloomington IN, US
Brian Bates - Bloomington IN, US
John Deford - Bloomington IN, US
Christopher Dixon - Bloomington IN, US
Andrew Hoffa - Bloomington IN, US
Raymond Leonard - Bloomington IN, US
Joseph Obermiller - Bloomington IN, US

International Classification:

A61F002/06
A61F002/24

US Classification:

623/001240, 623/002140, 623/002150, 623/001360

Abstract:

A multiple-sided medical device comprises a frame comprising wire or other resilient material and having a series of bends and interconnecting sides. The device has both a flat configuration and a second, folded configuration which a generally serpentine shape. The device is pushed from a delivery catheter into the lumen of a duct or vessel and may include one or more barbs for anchoring purposes. A full or partial covering of fabric or other flexible material such as DACRON, PTFE, or a collagen-based material such as small intestinal submucosa (SIS), may be sutured or attached to the frame to form an occlusion device, a stent graft, or an implantable, intraluminal valve such as for correcting incompetent veins in the lower legs and feet.

US Patent:

20040186558, Sep 23, 2004

Filed:

Aug 15, 2003

Appl. No.:

10/642372

Inventors:

Dusan Pavcnik - Portland OR, US
Thomas Osborne - Bloomington IN, US
Brian Case - Bloomington IN, US
Jacob Flagle - Bloomington IN, US
Michael Garrison - Bloomington IN, US
Andrew Hoffa - Bloomington IN, US
Raymond Leonard - Bloomington IN, US
Darin Schaeffer - Bloomington IN, US
Richard Sisken - West Lafayette IN, US

International Classification:

A61F002/06
A61F002/24

US Classification:

623/001240, 623/002180, 623/002380

Abstract:

An valve prosthesis, such as an artificial venous valve, having a support frame and leaf structure comprising one or more leaflets in which the outer edge of each leaflet engages the inner circumference of the bodily passageway along a serpentine path urged against the passageway by an expandable frame, while the inner edges move in response to fluid to restrict retrograde flow. Optionally, one or more elements can extend from the support frame/leaf structure to provide centering support and/or protection from the leaflet adhering to the vessel wall. In one embodiment, the centering support structure comprises a second or third expandable frames attached to and extending from the proximal and/or distal ends of main valve structure and support frame. In another embodiment, one or more support elements extend outward from the valve support frame to engage the vessel wall to provide greater longitudinal stability.

US Patent:

20060142846, Jun 29, 2006

Filed:

Jun 22, 2005

Appl. No.:

11/165600

Inventors:

Dusan Pavcnik - Portland OR, US
Frederick Keller - Portland OR, US
Josef Rosch - Portland OR, US
Thomas Osborne - Bloomington IN, US
Brian Bates - Bloomington IN, US
John DeFord - Bloomington IN, US
Christopher Dixon - Bloomington IN, US
Andrew Hoffa - Bloomington IN, US
Raymond Leonard - Bloomington IN, US
Joseph Obermiller - Bloomington IN, US

International Classification:

A61F 2/06

US Classification:

623001240

Abstract:

A multiple-sided medical device comprises a frame comprising wire or other resilient material and having a series of bends and interconnecting sides. The device has both a flat configuration and a second, folded configuration which a generally serpentine shape. The device is pushed from a delivery catheter into the lumen of a duct or vessel and may include one or more barbs for anchoring purposes. A full or partial covering of fabric or other flexible material such as DACRON, PTFE, or a collagen-based material such as small intestinal submucosa (SIS), may be sutured or attached to the frame using heat or pressure welding crimping, adhesive, or other techniques to form an occlusion device, a stent graft, or an implantable, intraluminal valve such as for correcting incompetent veins in the lower legs and feet.

US Patent:

20080097586, Apr 24, 2008

Filed:

Oct 31, 2007

Appl. No.:

11/931182

Inventors:

DUSAN PAVCNIK - PORTLAND OR, US
THOMAS OSBORNE - BLOOMINGTON IN, US
BRIAN Case - Lake Villa IL, US
JACOB FLAGLE - INDIANAPOLIS IN, US
MICHAEL GARRISON - Indianapolis IN, US
RAM PAUL - BLOOMINGTON IN, US
ANDREW HOFFA - BLOOMINGTON IN, US
RAYMOND LEONARD - BLOOMINGTON IN, US
DARIN SCHAEFFER - BLOOMINGTON IN, US
RICHARD SISKEN - WEST LAFAYETTE IN, US

International Classification:

A61F 2/06

US Classification:

623001240

Abstract:

An valve prosthesis, such as an artificial venous valve, having a support frame and leaf structure comprising one or more leaflets in which the outer edge of each leaflet engages the inner circumference of the bodily passageway along a serpentine path urged against the passageway by an expandable frame, while the inner edges move in response to fluid to restrict retrograde flow. Optionally, one or more elements can extend from the support frame/leaf structure to provide centering support and/or protection from the leaflet adhering to the vessel wall. In one embodiment, the centering support structure comprises a second or third expandable frames attached to and extending from the proximal and/or distal ends of main valve structure and support frame. In another embodiment, one or more support elements extend outward from the valve support frame to engage the vessel wall to provide greater longitudinal stability.