Craniotomy closures

• US 9,289,241 B2
• Filed: 05/08/2013
• Issued: 03/22/2016
• Est. Priority Date: 01/17/2006
• Status: Active Grant

• Current Assignee: New Amsterdam LLC
• Original Assignee: Biodynamics LLC (GreenGro Technologies, Inc.)
• Inventors: Ralph, James D., Troxell, Thomas N., Michels, Mark
• Primary Examiner(s): Hammond, Ellen C
• Application Number:
  US13/889,759
• Publication Number:
  US 20130245698A1
• Time in Patent Office: 1,049 Days
• Field of Search: 606/300, 606/75, 606322-328
• US Class Current: 1/1
• CPC Class Codes: A61B 17/686 Plugs, i.e. elements forming interface between bone hole and implant or fastener, e.g. screw
• CPC Class Codes: A61B 17/688 for reattaching pieces of the skull

Abstract

Craniotomy closures comprising surgical fasteners are described for use in reattaching a skull flap removed from the skull of a patient during brain surgery. Methods of using the same are also described. Surgical strips used in combination with the fasteners are shaped to follow the perimeter contour of the skull flap. The craniotomy closures are designed to encourage bone growth and healing of the skull flap and they can be used to deliver medication and bone growth enhancement materials to the surgical site.

Claims

1. A fastener for reattaching a skull flap, the fastener comprising:

a flange having an upper surface, a lower surface and at least two elongated ends adapted to overlay both sides of a kerf; and

at least one projection extending from the lower surface of the flange and adapted for insertion in the kerf, a proximal end of the at least one projection affixed to the lower surface of the flange at two fixation points;

wherein an opening is provided in the upper surface of the flange and extends into an aperture of the at least one projection, the aperture adapted for receiving a surgical strip.

2. The fastener of claim 1, wherein each of the at least two elongated ends comprises at least one hole adapted to receive a screw in the upper surface and extend through the lower surface of the flange.

3. The fastener of claim 1 wherein the at least one projection has a width sized to fit under compression in the kerf.

4. The fastener of claim 1 wherein the at least one projection is flexible.

5. The fastener of claim 1 wherein the at least one projection is V-shaped.

6. The fastener of claim 1, wherein the flange is comprised of a T-shaped body, a Y-shaped body, an L-shaped body or an X-shaped body.