Scimed Life Systems, Inc.

Boston Scientific Scimed, Inc.

Hannah Kim

Isaac Ostrovsky

Kristian J DiMatteo

Peter J Shank

Robert B DeVries

Forrest D Whitcher

Naroun Soun

Michael J Wallace

Mark W Wolfson

A recoverable thrombosis filter that may be recoverable by a single recovery procedure. It can include a plurality of thrombosis filtering elements that are shaped in a predetermined manner and which are joined at one end and are deployed about a longitudinal axis to form a generally conical structure. The filtering elements can include shaped ends for engaging an inner lumen wall.

Atraumatic anchoring and disengagement mechanism for permanent implant device

A thrombus filter configured for placement within a blood vessel lumen defined by a blood vessel wall. The thrombus filter includes a body member, and a plurality of wires. Each wire has a joined end and a free end. The joined end of each wire is fixedly attached to the distal portion of the body member. Each wire radiates away from the body member along a generally helical path of expanding diameter. The shape of each wire may be generally described as a spiral, or a helix of expanding diameter. The wires radiate away from the body member to form a generally conical filtering portion which includes a plurality of open cells. The thrombus filter may be removed using minimally invasive methods when such removal becomes desirable. A method of removing the thrombus filter is disclosed.

Removable thrombus filter

A recoverable thrombosis filter that can be implanted and securely positioned within a vein at a desired location, and can be recovered through an endovenous route even after formation of neointima hyperplasia, is disclosed.

A thrombus filter which can be securely fixed in a selected location in the vascular system of a patient and removed when no longer required. The thrombus filter includes a plurality of struts which radiate from a body portion to form the generally conical shape of the thrombus filter. The thrombus filter includes anchor members joined to the free end of each strut. The thrombus filter includes an insulating layer substantially covering the thrombus filter including the body portion, the struts and the anchor members. The insulating layer includes an opening proximate the anchor members. The opening in the insulating layer creates a conductive path between the thrombus filter and the patient's body. When removal of the thrombus filter is desired, a first electrical conductor forms an electrical connection with the body portion of the thrombus filter. A second electrical conductor forms an electrical connection with the patient's body. A power supply is used to selectively apply a voltage differential between the thrombus filter and the body of the patient. This voltage differential induces an electrical current the flow of electrical current between the thrombus filter and the patient's blood causes the electrolytic corrosion of the thrombus filter proximate the opening in the insulating layer. When the bond between the struts of the thrombus filter and the anchors is cut through or weakened, the thrombus filter may be pulled into the lumen of a retrieval catheter. Removal of the thrombus filter from the patient's body is completed by withdrawing the retrieval catheter from the patient's blood vessel.

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Boxborough, MA, United States of America

Hannah Kim