David L Sandock

6391045, May 21, 2002

Jul 5, 2000

09/609892

Hannah S. Kim - Arlington MA
David L. Sandock - Littleton MA
Sepideh H. Nott - Fall River MA

Boston Scientific Corporation - Natick MA

A61M 2900

606200, 128899

A vascular filter comprises an emboli-capturing portion having a set of helical filter-wires joined at a central region and extending in a given direction along the blood vessel in a diverging relationship to the axis of the filter, the wires terminating in free ends constructed to engage the walls of said vessel. A major mid-portion of the length of the free ended wires are of generally helical form, cooperatively related to form an effective emboli capturing array. Anchoring is accomplished by a separate assembly formed of struts and anchoring devices. A parallelogram supporting strut assembly and other means for providing linear engagement with the wall of the vena cava are shown. The parallelogram structure is shown to have filter capability by itself as well.

6419694, Jul 16, 2002

Aug 26, 1998

09/140262

David L. Sandock - Littleton MA

SciMed Life Systems, Inc. - Maple Grove MN

A61F 206

623 122

An implantable self-expanding medical prosthesis. The prosthesis has a tube-form body with a body wall structure having a geometric pattern of cells defined by a series of elongate strands extending to regions of intersection and interlocking joints at said regions of intersection formed by a portion of at least one of said strands being helically wrapped about a portion of another.

20010008970, Jul 19, 2001

Feb 20, 2001

09/789069

Adrian Ravenscroft - Boston MA, US
David Sandock - Littleton MA, US

Boston Scientific Corporation, Delaware corporation

A61M029/00

606/198000

Treating a site within the body by, e.g., placing an endoprosthesis into the body, with a catheter having a proximal portion remaining outside the body and a shaft for positioning inside the body. The shaft includes in a distal portion a selectively expandable member which can be expanded from a small cross-sectional profile for receiving said endoprosthesis about said expandable member in a compact configuration and a large, expanded cross-sectional profile for expanding said prosthesis during placement into the body, and an elastic strip wrapped in helical fashion about said expandable member such that the strip is stretched when said expandable member is expanded to said large cross-sectional profile.

20010032010, Oct 18, 2001

Jul 30, 1999

09/364463

DAVID L. SANDOCK - LITTLETON MA, US

Thomas O. Hoover

A61F002/06

623/001150

An implantable self-expanding medical prosthesis. The prosthesis has a tube-form body with a body wall structure having a geometric pattern of cells defined by a series of elongate strands extending to regions of intersection and interlocking joints at said regions of intersection formed by a portion of at least one of said strands being helically wrapped about a portion of another.

6273900, Aug 14, 2001

Jan 16, 1998

9/008258

Sepideh H. Nott - Canton MA
Hannah S. Kim - Boxborough MA
Naroun Soun - Lynn MA
David L. Sandock - Littleton MA

Boston Scientific Corporation - Natick MA

A61M 2900

606200

A blood clot filter comprising: an anchoring portion comprising a generally cylindrical self-expanding body formed from resilient material, the generally cylindrical body having proximal and distal ends and defining an axial direction and having a structure of variable size diameter expandable from a low-profile compressed condition to a larger profile expanded condition, wherein the resilient material urges the generally cylindrical body to radially expand and to thereby apply anchoring radial force against the inner wall surface of the blood vessel; and a generally conical filtering portion axially aligned with the generally cylindrical body having an open proximal end coupled to the distal end of the anchoring portion and having an apical distal end. Also disclosed is a blood clot filter having one or more hooks fixedly coupled to the anchoring portion and formed from compliant material having an original shape that bends under stress yet returns to its original shape when unstressed. The hooks respectively tend to project from the anchoring portion at an acute angle with respect to the axial direction for engagement with a vessel wall.

61266736, Oct 3, 2000

Nov 17, 1998

9/195182

Hannah S. Kim - Arlington MA
David L. Sandock - Littleton MA
Sepideh H. Nott - Fall River MA

Boston Scientific Corporation - Natick MA

A61B 1700
A61M 2900

606200

A vascular filter-comprises an emboli-capturing portion having a set of helical filter-wires joined at a central region and extending in a given direction along the blood vessel in a diverging relationship to the axis of the filter, the wires terminating in free ends constructed to engage the walls of said vessel. A major mid-portion of the length of the free ended wires are of generally helical form, cooperatively related to form an effective emboli capturing array. Anchoring is accomplished by a separate assembly formed of struts and anchoring devices. A parallelogram supporting strut assembly and other members for providing linear engagement with the wall of the vena cava are shown. The parallelogram structure is shown to have filter capability by itself as well.

58369694, Nov 17, 1998

Jul 28, 1997

8/901126

Hannah S. Kim - Arlington MA
David L. Sandock - Littleton MA
Sepideh H. Nott - Fall River MA

Boston Scientific Corporation - Watertown MA

A61B 1700
A61M 2900

606200

A vascular filter comprises an emboli-capturing portion having a set of helical filter-wires joined at a central region and extending in a given direction along the blood vessel in a diverging relationship to the axis of the filter, the wires terminating in free ends constructed to engage the walls of said vessel. A major mid-portion of the length of the free ended wires are of generally helical form, cooperatively related to form an effective emboli capturing array. Anchoring is accomplished by a separate assembly formed of struts and anchoring devices. A parallelogram supporting strut assembly and other means for providing linear engagement with the wall of the vena cava are shown. The parallelogram structure is shown to have filter capability by itself as well.

57097046, Jan 20, 1998

Nov 30, 1994

8/346733

Sepideh H. Nott - Canton MA
Hannah S. Kim - Boxborough MA
Naroun Suon - Lynn MA
David L. Sandock - Littleton MA

Boston Scientific Corporation - Watertown MA

A61B 1700

606200

A blood clot filter including an anchoring portion including a generally cylindrical self-expanding body formed from resilient material, the generally cylindrical body having proximal and distal ends and defining an axial direction and having a structure of variable size diameter expandable from a low-profile compressed condition to a larger profile expanded condition, wherein the resilient material urges the generally cylindrical body to radially expand and to thereby apply anchoring radial force against the inner wall surface of the blood vessel; and a generally conical filtering portion axially aligned with the generally cylindrical body having an open proximal end coupled to the distal end of the anchoring portion and having an apical distal end. Also disclosed is a blood clot filter having one or more hooks fixedly coupled to the anchoring portion and formed from compliant material having an original shape that bends under stress yet returns to its original shape when unstressed. The hooks respectively tend to project from the anchoring portion at an acute angle with respect to the axial direction for engagement with a vessel wall.