Boston Scientific Corporation

Scimed Life Systems, Inc.

Kopin Corporation

David L Sandock

Sepideh H Nott

Hannah S Kim

Adrian C Ravenscroft

Naroun Suon

Naroun Soun

Iiya Yampolsky

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.

Expandable catheter

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.

Medical prosthesis

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.

Vena cava filter

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. Also, the hooks are deflectable toward the anchoring portion for achieving a low-profile.

Blood clot filtering

A self-centering blood clot filter is provided. The filter includes an anchoring portion including a generally cylindrical radially expandable body including an axial lumen extending therethrough. The filter further includes a filtering portion including a conical body concentrically aligned within the axial lumen of the anchoring portion. The conical body of the filtering portion is tapered to form a distal tip. As such, the blood clot filter can be properly centered within the lumen of a vessel for effective lysing of blood clots.

Self-centering, self-expanding and retrievable vena cava filter

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.

Tubular medical prosthesis for use in a body lumen

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. Also, the hooks are deflectable toward the anchoring portion for achieving a low-profile.

Growing community of inventors

Littleton, MA, United States of America

David L Sandock