BLADE ANCHOR SYSTEMS FOR BONE FUSION

• US 20160157906A1
• Filed: 02/03/2016
• Published: 06/09/2016
• Est. Priority Date: 11/01/2011
• Status: Active Grant

• Current Assignee: Engage Medical Holdings, LLC
• Original Assignee: Engage Medical Holdings, LLC
• Inventors: Hollis, M. Chad, Brownhill, James
• Granted Patent: US 10,245,090 B2
• Time in Patent Office: Days
• CPC Class Codes: A61B 17/0642 for bones, e.g. for osteosynthesis or connecting tendon to bone
• CPC Class Codes: A61B 17/68 Internal fixation devices , including fasteners and spinal fixators, even if a part thereof projects from the skin bone staples A61B17/0642
• CPC Class Codes: A61B 17/846 Nails or pins, i.e. anchors without movable parts, holding by friction only, with or without structured surface A61B17/72, A61B17/86 take precedence
• CPC Class Codes: A61B 2017/0641 having at least three legs as part of one single body
• CPC Class Codes: A61F 2/4261 for wrists
• CPC Class Codes: A61F 2002/4271 Carpal bones

Abstract

Fusion devices include blade anchors. The blade anchors may slidingly penetrate a bone or bone fragment, and may induce compression of one bone to another or one fragment to another. The fusion devices may also include a body to which the blade anchors connect.

Claims

1. A fusion device comprising:

a body comprising a first end, a second end opposite the first end, and a plurality of undercut slots extending between the first and second ends; and

at least one anchor, the anchor comprising a protrusion, an arm, and a blade, the protrusion engaging a correspondingly shaped one of the plurality of undercut slots, the arm extending outward from the body and terminating in the blade, the blade extending transverse to the arm.

2. The device of claim 1, wherein the first and second ends are planar, wherein the body comprises a cylinder extending between the first and second ends.

3. The device of claim 1, wherein the protrusion is axially movable along the correspondingly shaped one of the plurality of undercut slots.

4. The device of claim 1, comprising a second anchor comprising a second protrusion, the second anchor engaging a second correspondingly shaped one of the plurality of undercut slots.

5. The device of claim 4, wherein the second anchor comprises a second arm, wherein the second arm is longer than the first arm.

6. The device of claim 1, comprising a cap threadedly connected to the first end of the body.

7. The device of claim 1, wherein the anchor comprises a tapered portion adjacent to the second end of the body.

8. A fusion device comprising:

a central portion comprising a sharpened biconcave leading edge, a blunt trailing end, a first lateral end and a second lateral end opposite the first lateral end;

a first lateral blade transversely mounted to the first lateral end of the central portion; and

a second lateral blade transversely mounted to the second lateral end of the central portion.

9. The device of claim 8, wherein the blunt trailing end is concave.

10. The device of claim 8, wherein the first lateral blade comprises serrations.

11. The device of claim 8, wherein the first lateral blade comprises a first exterior surface and a first interior surface opposite the first exterior surface, wherein the first exterior surface faces away from the central portion, wherein the first interior surface is sloped and intersects the first exterior surface at a first tip portion.

12. The device of claim 11, wherein the second lateral blade comprises a second exterior surface and a second interior surface opposite the second exterior surface, wherein the second exterior surface faces away from the central portion, wherein the second interior surface is sloped and intersects the second exterior surface at a second tip portion.

13. The device of claim 12, wherein the first and second tip portions diverge outwardly from the central portion.