Application No.: 17/639,038
`Preliminary Amendment Dated: June 22, 2022
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`Amendments to the Claims:
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`This listing of claims will replace all prior versions, andlistings, of claims in the application:
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`Listing of Claims:
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`1.
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`(Original) A decorticating screw device, comprising:
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`a substantially cylindrical body, the body having a distal threaded section, a
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`proximalthreaded section, a central ring having one or more decorticating elements.
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`2.
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`(Original) The device of claim 1, wherein the screw device further comprises a lumen
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`running between a proximal opening anda distal opening.
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`3.
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`(Original) The device of claim 2, wherein the screw device further comprises a cap
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`having a threaded lumensized to fit over the proximal threaded section of the body and a
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`proximallip having a diameter greater than a diameter of the cap.
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`4.
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`(Original) The device of claim 3, wherein the central ring is independently rotatable
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`from the threaded distal section.
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`5.
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`(Original) The device of claim 4, wherein the screw device further comprises one or
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`more lateral openings fluidly connected to the lumen.
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`6-30.
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`(Canceled)
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`Page 2 of 8
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`Application No.: 17/639,038
`Preliminary Amendment Dated: June 22, 2022
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`31.
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`(Original) A method of fusing a joint between a first bone and a second bone,
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`comprising the steps of:
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`providing a decorticating screw having a threaded distal section, a threaded
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`proximalsection, a rotatable central ring having one or more decorticating elements, a lumen
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`running between a proximal opening anda distal opening, and one or morelateral openings
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`fluidly connected to the lumen;
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`inserting the screw into a joint in need of fixation, such that the distal section is
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`positioned in a first bone, the proximal section is positioned in a second bone, andthe central
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`ring is positioned in a joint space betweenthe first bone and the second bone;
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`rotating the central ring, such that the one or more decorticating elements
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`decorticate the joint space between the first bone and the second bone;
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`packing at least one graft material into the proximal opening of the screw, such
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`that the at least one graft material enters the lumen andexits the one or morelateral openings of
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`the screw;
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`placing a cap onto the proximalsection of the screw; and
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`screwing a lock screw into the proximal opening of the screw.
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`32.
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`(Original) The method of claim 31, wherein the graft material is selected from the group
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`consisting of: autologous bonegrafts, allogeneic bone grafts, xenogeneic bonegrafts,
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`hydroxyapatite, calcium phosphate, calcium sulphate, bioactive glass, polymers, cements, and
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`combinations thereof.
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`Page 3 of 8
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`Application No.: 17/639,038
`Preliminary Amendment Dated: June 22, 2022
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`33.
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`(Previously Presented) The device of claim 5, wherein the screw device comprises one
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`or more cutting flutes at a distal end.
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`34.
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`(Previously Presented) The device of claim 5, wherein the screw device comprises one
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`or more pointedtips at a distal end.
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`35.
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`(Cancelled)
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`36.
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`(Cancelled)
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`37.
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`(Previously Presented) The device of claim 5, wherein the central ring is attached to the
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`proximal threaded section, such that the central ring and proximal threaded section are
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`independently rotatable from the distal threaded section.
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`38.
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`(Previously Presented) The device of claim 5, wherein the central ring is movable in
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`proximalanddistal directions to increase the reach of the one or more decorticating elements.
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`39.
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`(Previously Presented) The device of claim 5, wherein the screw device comprises two
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`or more external slots formed betweenthe distal threaded section, the central ring, and the one or
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`more decorticating elements, such that each external slot is sized to receive a pin of a screw
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`driving device.
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`40.
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`(Cancelled)
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`Page 4 of 8
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`Application No.: 17/639,038
`Preliminary Amendment Dated: June 22, 2022
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`41.
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`(Previously Presented) The device of claim 5, wherein the cap comprises one or more
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`surface voids configured to accept graft material or tissue ingrowth.
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`42.
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`(Previously Presented) The device of claim 5, wherein the cap comprises a thread-
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`locking insert positioned at a proximal end ofthe threaded lumen.
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`43.
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`(Cancelled)
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`44.
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`(Cancelled)
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`45.
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`(Previously Presented) The device of claim 5, wherein the one or more decorticating
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`elements are moveable between a closed position and an open position.
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`46.
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`(Previously Presented) The device of claim 45, wherein the closed position positions the
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`decorticating elements adjacent to the central ring such that they have a diameter substantially
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`equal to a diameter of the distal threaded section, and wherein the open position positions the
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`decorticating elements away from the central ring such that the decorticating elements extend
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`beyond the diameter of the distal threaded section.
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`47.
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`(Previously Presented) The device of claim 45, wherein the one or more decorticating
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`elements are hingedly connectedto the central ring along an axis thatis in parallel with a long
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`axis of the body andare laterally swung from the closed position to the open position.
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`Page 5 of 8
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`Application No.: 17/639,038
`Preliminary Amendment Dated: June 22, 2022
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`48.
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`(Previously Presented) The device of claim 45, wherein the one or more decorticating
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`elements are hingedly connected to the central ring along an axis that is perpendicular to a long
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`axis of the body and splay outwards from the closed position to the open position.
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`49.
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`(Previously Presented) The device of claim 45, wherein the one or more decorticating
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`elements are flexible wire blades retracted into the central ring in a closed position and are
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`pushable outwards from the central ring to the open position.
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`50.
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`(Previously Presented) The device of claim 45, wherein the one or more decorticating
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`elements are sheathed within the central ring in a closed position and are slideable outwards from
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`the closed position to the open position.
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`51.
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`(Previously Presented) The device of claim 45, wherein the one or more decorticating
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`elements are at least partially pliable and are bendable from a closed position to an open position.
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`52.
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`(Previously Presented) The device of claim 45, wherein the one or more decorticating
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`elements comprisesat least one serration.
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`53.
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`(Previously Presented) The device of claim 5, wherein the proximal threaded section has
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`a diameterthat is less than a diameter of the distal threaded section.
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`54.
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`(Canceled)
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`Page 6 of 8
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`Application No.: 17/639,038
`Preliminary Amendment Dated: June 22, 2022
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`55.
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`(Previously Presented) The device of claim 5, further comprising a lock screw having a
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`diameter larger than a diameter of the screw device lumen, the lock screw being drivable into the
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`proximal opening of the screw device to expand a proximal end of the screw device.
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`56.
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`(Previously Presented) The device of claim 5, wherein the screw device has a length
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`between about 10 mm and about 150 mm.
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`57.
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`(Previously Presented) The device of claim 5, wherein the screw device has an outer
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`diameter between about 5 mm and about 50 mm.
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