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US 9,848,863 B2Granted
Surgical retractor systems and methods
AssigneeGlobus Medical, Inc.
InventorsJoel Cryder, Edward Karpowicz, Matthew Kohler
Life of this patent
Estimating the term…
Abstract
Embodiments herein are generally directed to surgical retractor systems. In some embodiments, these retractor systems may be used in spinal fusion or other procedures that utilize a transforaminal approach.
Claims20
A retractor system comprising:
- a first arm comprising a towing assembly, the towing assembly comprising an interface member coupled to a rotatable shaft, wherein the interface member comprises a distal surface having a plurality of protrusions and receptacles;
- and
- a first blade comprising a through-hole passing from a first side surface to a second side surface and configured to reversibly receive the rotatable shaft therein, wherein the first blade comprises a plurality of protrusions and receptacles configured to intermesh with the plurality of protrusions and receptacles of the distal surface of the first arm.
A retractor system, comprising:
- a first arm comprising a towing assembly, the towing assembly comprising a rotatable shaft coupled to both a worm drive and an interface member, the interface member comprising a star grind;
- a first blade comprising a through-hole passing from a first side surface to a second side surface and configured to reversibly receive the rotatable shaft therein, an interiorly-threaded passageway that intersects the through-hole, and a star grind on the first side surface configured to interdigitate with the star grind of the first arm;
- and
- a retaining member configured to reversibly engage the interiorly-threaded opening of the first blade and the rotatable shaft of the first arm.
1 more element
A retractor system, comprising:
- a first arm comprising a towing assembly, the towing assembly comprising a rotatable shaft coupled to both a worm drive and an interface member, the interface member comprising a star grind;
- and
- a first blade comprising a through-hole configured to reversibly receive the rotatable shaft therein and a star grind configured to interdigitate with the star grind of the first arm;
- wherein the first blade is configured to be pivotable relative to the first arm by an angle of at least 180 degrees when the first blade is coupled to the first arm.
1 more element
Dependencies are inferred from the claim text.