Surgery – Specula – Retractor
Reexamination Certificate
2005-03-09
2008-05-20
O'Connor, Cary E (Department: 3732)
Surgery
Specula
Retractor
C600S224000
Reexamination Certificate
active
07374534
ABSTRACT:
A retractor for percutaneous surgery in a patient which includes an elongate retractor tube composed of circumferentially arranged elongate independent tube segments with proximal ends of the tube segments respectively hinged to a unitary collar whereby the distal ends of the tube segments may be outwardly expanded in umbrella fashion by outwardly pivoting the segments about their respective hinges for thereby retracting surrounding tissue. The distal end of the retractor tube is provided with a tapered distal end suitably dimensioned for insertion into a stab incision. An internally open expansion collet is coaxially received in the collar for adjustable coaxial advancement downwardly into the collar toward the retractor tube segments and fulcrum tabs protrude inwardly and upwardly towards the expansion collet from each tube segment adjacent a respective hinge. The fulcrum tabs are sized for engaging a bottom end of the collet for thereby progressively pivoting the segments outward about their hinges as the collet advances downwardly into the collar.
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Carothers & Carothers
O'Connor Cary E
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