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US 2012/0239048 A1Published application
Injectable Fastener System and Method
AssigneeSynthes USA, LLC
InventorsSean Kerr, Edward August Kurek, III, Junior Julien
Life of this patent
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Abstract
Methods and devices are shown for forming polymer fasteners into bone by expelling the polymer from a cannula. Devices and methods shown allow a user to form multiple fasteners of various sizes without re-loading a device. Devices and methods shown further provide temperature profiles during fastener formation that reduce or eliminate thermal necrosis. Devices and methods shown further provide fasteners with increased strength.
Claims24
1-20. (canceled)
A bone support attachment device, comprising:
- an injection cannula sized to hold an amount of polymer to form a single fastener;
- a polymer supply inlet coupled to a side of the injection cannula;
- a plunger having a tip disposed at a first end of the injection cannula such that when actuated, the plunger expels the amount of polymer from a second end of the injection cannula upon the plunger reaching the second end of the injection cannula;
- and
- a chamber sized to house a block of polymer sufficient to form a plurality of fasteners, the chamber having a first end having a chamber polymer supply inlet and a second end distal the first end and connected to the polymer supply inlet to sequentially provide the amount of polymer to form a single fastener from the chamber, the chamber including an actively regulated chamber heater configured to maintain a temperature profile from a first end of the chamber to the second end of the chamber, wherein the temperature profile comprises a temperature gradient from the first end of the chamber to the second end of the chamber and wherein the temperature gradient is warmer at the second end of the chamber than at the first end of the chamber.
2 more elements
Dependencies are inferred from the claim text.