Bone implant and method

• US 20030004573A1
• Filed: 07/22/2002
• Published: 01/02/2003
• Est. Priority Date: 07/01/2000
• Status: Abandoned Application

• Current Assignee: The G.W. Bagby II Family Trust, LLC
• Original Assignee: The G.W. Bagby II Family Trust, LLC
• Inventors: Bagby, George W.
• Application Number:
  US10/201,415
• Publication Number:
  US 20030004573A1
• Time in Patent Office: Days
• US Class Current: 623/17.11
• CPC Class Codes: A61B 17/1637 Hollow drills or saws producing a curved cut, e.g. cylindrical A61B10/025, A61B17/1695 take precedence
• CPC Class Codes: A61B 17/1671 for the spine
• CPC Class Codes: A61B 17/1757 for the spine
• CPC Class Codes: A61B 17/8875 Screwdrivers, spanners or wrenches
• CPC Class Codes: A61B 2017/0256 for the spine
• CPC Class Codes: A61F 2/442 Intervertebral or spinal discs, e.g. resilient non-disc-shaped intervertebral inflatable pockets A61F2/441; non-disc-shaped intervertebral fusion implants A61F2/4455
• CPC Class Codes: A61F 2/446 having a circular or elliptical cross-section substantially parallel to the axis of the spine, e.g. cylinders or frustocones
• CPC Class Codes: A61F 2/447 substantially parallelepipedal, e.g. having a rectangular or trapezoidal cross-section
• CPC Class Codes: A61F 2/4603 for insertion or extraction of endoprosthetic joints or of accessories thereof
• CPC Class Codes: A61F 2/4611 of spinal prostheses
• CPC Class Codes: A61F 2002/2835 Bone graft implants for filling a bony defect or an endoprosthesis cavity, e.g. by synthetic material or biological material
• CPC Class Codes: A61F 2002/30113 circular
• CPC Class Codes: A61F 2002/30153 rectangular
• CPC Class Codes: A61F 2002/30235 tubular, e.g. sleeves
• CPC Class Codes: A61F 2002/30261 parallelepipedal
• CPC Class Codes: A61F 2002/30322 differing in surface structures
• CPC Class Codes: A61F 2002/30593 hollow
• CPC Class Codes: A61F 2002/30787 inclined obliquely with respect to each other
• CPC Class Codes: A61F 2002/30789 perpendicular with respect to each other
• CPC Class Codes: A61F 2002/3085 with a threaded, e.g. self-tapping, bone-engaging surface, e.g. external surface
• CPC Class Codes: A61F 2002/30892 : parallel
• CPC Class Codes: A61F 2002/30894 : inclined obliquely with respect to each other
• CPC Class Codes: A61F 2002/30896 : perpendicular with respect to each other
• CPC Class Codes: A61F 2002/4681 : by applying mechanical shocks, e.g. by hammering
• CPC Class Codes: A61F 2230/0006 : circular
• CPC Class Codes: A61F 2230/0019 : rectangular
• CPC Class Codes: A61F 2230/0069 : cylindrical
• CPC Class Codes: A61F 2230/0082 : parallelepipedal
• CPC Class Codes: A61F 2250/0026 : differing in surface structures
• CPC Class Codes: Y10S 606/907 : Composed of particular material or coated

Abstract

A bone joining implant includes a tubular body. The tubular body has an axially extending outer surface defining an outer dimension of substantially uniform cross-section and including a smooth leading insertion portion and a bone engaging trailing portion.

Claims

25. (New) A bone implant, comprising a body with a smooth leading portion, a bone-engaging trailing portion, and opposed lateral portions, each portion adapted for placement toward adjacent bone bodies, and the bone-engaging trailing portion including a plurality of retaining tabs.

26. (New) The bone implant of claim 25 wherein the smooth leading portion is configured to align the body between adjacent bone bodies during insertion between a pair of adjacent bone bodies.

27. (New) The bone implant of claim 25 wherein a first retaining tab is provided in a first opposed lateral portion and a second retaining tab is provided in a second opposed lateral portion.

28. (New) The bone implant of claim 25 wherein the body has a rectangular cross-section.

29. (New) The bone implant of claim 28 wherein the body comprises a tubular body having a rectangular cross-section.

30. (New) The bone implant of claim 25 wherein the at least one retaining tab comprises a plurality of retaining tabs raised from an outer surface of the trailing portion.

31. (New) The bone implant of claim 30 wherein the retaining tabs are forcibly urged into engagement with bone beds of adjacent vertebra upon implantation of the bone implant therebetween so as to prevent movement of the bone implant.

32. (New) The bone implant of claim 25 wherein the smooth leading portion aligns the body between adjacent bone bodies and the bone-engaging trailing portion interlocks the bone implant between the adjacent bone bodies.

33. (New) A method for implanting a bone implant between adjacent bone bodies, comprising:

providing a body having a smooth leading portion, a bone-engaging trailing portion, and opposed lateral portions adapted for placement toward adjacent bone bodies;

excavating a pair of adjacent bone bodies to receive the body therebetween

axially inserting the smooth leading portion of the body between the prepared adjacent bone bodies to axially align the body therebetween; and

forcibly axially urging the bone-engaging trailing portion of the body between the adjacent bone bodies to retain the body therebetween.