Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
July 17, 2012
Patent Application Number
12712189
Date Filed
February 24, 2010
Patent Primary Examiner
Patent abstract
Expanding cannula and retractor devices and methods of use are provided. An expanding cannula and retractor device includes a first tube, a second tube positioned within the first tube, and an expandable continuous membrane connecting distal portions of the first and second tubes. The membrane can expand into an annulus based on the movement of the second tube relative to the first tube in order to contact tissue and maintain the position of the device.
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