The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 20, 2004
Filed:
Mar. 14, 2002
John C. Pulford, Groton, MA (US);
Marco Pelosi, New Providence, NJ (US);
Apple Medical Corporation, Marlboro, MA (US);
Abstract
An adjustable retractor is disclosed comprising an inner ring, an outer ring spaced from the inner ring, and an elongate sleeve open at opposite ends. The sleeve is provided and extends between the inner and outer rings and is connected at the opposite ends to the rings. The outer ring is provided with a pre-loaded rotational torque to assist with rotation of the outer ring about its central axis to roll the sleeve about the outer ring to adjust sleeve length. The outer ring may be formed in a mobius configuration to provide the pre-loaded rotational torque. The outer ring has a cross-sectional shape that may have numerous different configurations. The mobius configuration may include the cross-sectional shape having an outer circumference offset by a predetermined amount about the central axis of the outer ring proceeding longitudinally along the central axis from one location on the outer ring to another location on the outer ring. A method of adjusting a retractor is also disclosed.