ANDREW CRAGG, M.D
Radiology at 28 St, Minneapolis, MN

5370653, Dec 6, 1994

Jul 22, 1993

8/095867

Andrew H. Cragg - Bloomington MN

Micro Therapeutics, Inc. - Aliso Viejo CA

A61B 500

606170

A thrombectomy method and apparatus for dissolving a soft fibrinous obstruction, such as a recently formed thrombus, within a patient's vascular system, either in a vessel or in a prosthetic implant, employing a rotating brush for separating and mixing the fibrin of the thrombus while a dissolving agent, e. g. streptokinase or urokinase, is introduced and mixed in and applied to the separated fibrin. The brush is formed of soft, flexible bristles that extend outward from the distal end of an elongated, flexible, rotatable drive shaft having a drive motor assembly attached at its proximal end. In use, an introducer catheter is introduced through a patient's blood vessels until the distal end opening is positioned adjacent the thrombus. The brush is passed through the introducer lumen and out the distal opening to place the brush bristles in contact with the thrombus. The dissolving agent is introduced into the region of rotation of the brush either through the introducer catheter lumen or a drive shaft lumen for dissolving the soft thrombus as it is mixed by the bristles.

5766237, Jun 16, 1998

Jun 7, 1995

8/478181

Andrew H. Cragg - Bloomington MN

Boston Scientific Technologies, Inc. - Maple Grove MN

A61F 206, A61M 2900

623 1

A method of implanting a tubular intraluminial stent which is made of a predetermined length of wire having a zig-zag configuration and defining a series of axially displaced hoop members, each hoop member having a successive series of zig-zags, the apices of axially oppositely disposed zig-zags in adjacent hoop members abutting one another, wherein the wire is a shape-memory material and the stent is compressible and radially expandable by thermal transformation, using a tubular sheath disposed between an entry location in a body and the location of implantation and a catheter. The method includes the steps of compressing the stent; inserting the compressed stent into the tubular sheath; pushing the compressed stent through the sheath to the implantation location using the catheter; withdrawing the sheath while holding the stent at the implantation location with the catheter; and expanding the stent within the implantation location by thermal transformation.

5683448, Nov 4, 1997

Nov 23, 1994

8/344524

Andrew H. Cragg - Bloomington MN

Boston Scientific Technology, Inc. - Maple Grove MN

A61F 206, A61F 204

623 1

An intraluminal stent and graft includes a stent made of a continuous helix of zig-zag wire and loops which connect adjacent apices of the wire. The stent is compressible and self-expandable substantially to a pre-compressed configuration. The device also includes a graft secured to the stent and made of a suitable biocompatible material.

5405377, Apr 11, 1995

Feb 21, 1992

7/839911

Andrew H. Cragg - Bloomington MN

EndoTech Ltd. - Guernsey

A61F 206

623 1

An intraluminal stent includes a continuous helix of zig-zag wire and loops which connect adjacent apices of the wire. The stent is compressible and self-expandable substantially to a pre-compressed configuration. A method of forming the stent includes bending a length of wire into a zig-zag configuration and a helix and connecting adjacent apices of the wire. A method implanting this stent includes compressing the stent radially, implanting it in a predetermined location of a body vessel, and allowing it to recoil to the configuration it had before compression.

5665115, Sep 9, 1997

Jun 7, 1995

8/477076

Andrew H. Cragg - Bloomington MN

Boston Scientific Technology, Inc. - Maple Grove MN

A61F 206

623 1

A intraluminal stent and graft includes a stent made of a continuous helix of zig-zag wire and loops which connect adjacent apices of the wire. The stent is compressible and self-expandable substantially to a pre-compressed configuration. The device also includes a graft secured to the stent and made of a suitable biocompatible material.