Boston Scientific Scimed, Inc.

Scimed Life Systems, Inc.

Nancy Haig

Lixiao Wang

John Jianhua Chen

Sheng-Ping Zhong

Mark H Wyzgala

Irina Nazarova

Eric B Hamilton

Tom J Hiblar

Thomas J Hiblar

A vessel seal for reversibly sealing a body lumen comprises a support structure moveable between an insertion and deployed configuration, wherein a diameter of the support structure in the deployed configuration is greater than in the insertion configuration, and is substantially corresponding to an inner diameter of a lumen. A compressible vessel seal is coupled to the support structure so that, when in the deployed configuration, the vessel seal expands to occlude the lumen. A method of controlling flow through a body lumen, comprises the steps of inserting into a lumen a vessel seal assembly including a support structure and a compressible vessel seal coupled thereto and moving the support structure to a deployed configuration in which the vessel seal expands to occlude the lumen, wherein a diameter of a support structure in the deployed configuration is greater than in the insertion configuration and substantially corresponds to an inner diameter of the lumen.

Reversible vessel seal

An atherectomy burr has an operating diameter that is larger than the diameter of a catheter in which the burr is routed. The burr may include an expandable polymeric balloon having a partially abrasive exterior surface. The maximum expansion of the burr is controlled by an expansion mechanism. Various mechanisms are disclosed for controlling the maximum diameter of the burr thus preventing the burr from over expanding. In addition, the present invention includes systems that are pulled proximally to remove portions of a lesion located in a patient's vasculature. The system includes an ablation burr that has abrasive disposed on the proximal end. The burr may create a seal when expanded to block the ablated particulate so that an aspiration system can remove the particulate from the vasculature. Alternatively, the burr system may include a self expanding seal that is deployed out of the aspiration sheath.

Expandable ablation burr

An atherectomy burr has an operating diameter that is larger than the diameter of a catheter in which the burr is routed. The burr may include a polymeric balloon that is coated with an abrasive and that expands when the burr is rotated. When the burr is rotated, the polymeric tube expands by centrifugal force. The maximum expansion of the burr is controlled by an expansion mechanism. Various mechanisms are disclosed for controlling the maximum diameter of the burr thus preventing the burr from over expanding. In addition, the present invention includes a system for preventing the loose ablated particulate from reembolizing in the distal vasculature. The system includes an ablation burr that has abrasive disposed on the proximal end that is pulled back toward the guide catheter to ablate the lesion. The burr creates a seal when expanded to block the ablated particulate so that the aspiration system can remove the particulate from the patient vessel or stent. Alternatively, the burr system may include a self expanding seal that is deployed out of the aspiration sheath so that a slight vacuum can remove the large loose particulate form, the patient's vessel or stent.

Growing community of inventors

East Bethel, MN, United States of America

Nancy Haig