US 10,368,927 B2Granted

Bone plate with captive clips

AssigneeDePuy Synthes Products, Inc.

InventorsDavid S. Rathbun, Sean S. Suh

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Abstract

A fixation system includes a plate comprising a top surface, a bottom surface, a central longitudinal axis, at least one fixation hole extending between the top and bottom surfaces and comprising an undercut therein, and at least one passage intersecting one of the undercuts. At least one resilient clip is disposed in at least a portion of the undercut, with the at least one clip having a pair of generally parallel sides and an end tab. At least one fastener is provided and comprises a head and a threaded shaft, with the head comprising a perimetral groove extending around at least a portion thereof and an instrument receiving portion. The at least one clip is configured and dimensioned to seat in the undercut with the end tab extending within the passage, and the at least one fastener is configured and dimensioned to be received in the at least one fixation hole and securable therein when the at least one clip abuts the perimetral groove of the head.

Claims20

Dependent claims

A method of implanting a bone plate, the method comprising:

positioning the bone plate adjacent a bone;
identifying a select screw to be inserted through a hole extending through the bone plate, the select screw being selected from a group that includes a variable angle screw and a fixed angle screw, wherein:
the variable angle screw includes a first head portion and a first shaft portion that extends from the first head portion along a first longitudinal axis, the first head portion including a first convex surface adjacent the first shaft portion;
and
the fixed angle screw including a second head portion and a second shaft portion that extends from the second head portion along a second longitudinal axis, the second head portion including a second convex surface adjacent the second shaft portion, the second convex surface extending proximally from the second shaft portion along the second longitudinal axis a distance less than a distance that the first convex surface extends proximally from the first shaft portion along the first longitudinal axis;
and
inserting the select screw through the hole and driving the screw into the bone so that 1) a resilient clip disposed within the hole is located above the first or second convex surface and 2) the first or second convex surface is seated against a tapered surface of the bone plate within the hole, wherein a central axis of the hole is one of angularly offset relative to the first longitudinal axis and parallel with the second longitudinal axis, and the resilient clip resists the select screw from backing out of the bone plate.

4 more elements

A method of implanting a bone plate, the method comprising:

selecting the bone plate from a kit;
positioning the bone plate adjacent a vertebral body;
identifying a select screw from the kit, the select screw being selected from a group that includes a variable angle screw and a fixed angle screw, wherein:
the variable angle screw includes a first head portion and a first shaft portion that extends from the first head portion along a first longitudinal axis, the first head portion including a first convex surface adjacent the first shaft portion;
and
the fixed angle screw including a second head portion and a second shaft portion that extends from the second head portion along a second longitudinal axis, the second head portion including a second convex surface adjacent the second shaft portion, the second convex surface extending proximally from the second shaft portion along the second longitudinal axis a distance less than a distance that the first convex surface extends proximally from the first shaft portion along the first longitudinal axis;
and
inserting the select screw through the hole and driving the screw into the bone so that 1) a resilient clip disposed within the hole is located above the first or second convex surface and 2) the first or second convex surface is seated against a tapered surface of the bone plate within the hole, wherein a central axis of the hole is one of angularly offset relative to the first longitudinal axis and parallel with the second longitudinal axis, and the resilient clip resists the select screw from backing out of the bone plate.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/168,619Filed 31 May 2016 · continuation
Priority: 3 Sep 2003
Published: US 2016/0346021 A11 Dec 2016
Granted: 6 Aug 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

A61B 17/8047
Having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges…:…
A61B 17/1728
Guides or aligning means for drills , mills, pins or wires: for holes for bone plates or plate screws
A61B 17/1757
Specially adapted for particular parts of the body: for the spine
A61B 17/8004
Cortical plates , i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates:…

Family

Application10/653,164Parent of this continuation-in-part · filed 3 Sep 2003
Application11/242,660Parent of this continuation · filed 3 Oct 2005
US 7,857,839 B2Parent of this continuation-in-part · filed 28 Dec 2010
Application13/026,110Parent of this continuation · filed 11 Feb 2011
US 7,909,860 B2Parent of this continuation · filed 22 Mar 2011
US 2016/0346021 A1Pre-grant publication · published 1 Dec 2016
US 9,408,646 B2Parent of this continuation
Application11/242,660Parent of this continuation-in-part
US 2005/0049593 A1Published application
US 2006/0100626 A1Published application
US 2011/0137344 A1Published application
US 10,368,927 B2This patent

From the US filing history. Foreign family members aren’t listed.

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