Back to results
US 12,551,242 B2Granted
Bone anchor with deployable purchase element
AssigneeNuVasive, Inc.
InventorsJesse Unger, Robert German, Nicholas Didier
Life of this patent
Estimating the term…
Abstract
A bone anchor is provided for connecting a rod to a bone structure, the bone anchor having a rod housing configured to accommodate the rod; a cavity distal to the rod housing dimensioned to accommodate the bone structure; and a deployable purchase element capable of assuming a deployed position in which the purchase element protrudes into the cavity, and capable of assuming a non-deployed position in which the purchase element does not substantially protrude into the cavity.
Claims17
A system comprising:
- a spinal rod;
- and
- a bone anchor configured to anchor the spinal rod to a bone, the bone anchor comprising:
- a rod housing configured to receive the spinal rod therethrough;
- a hook distal to the rod housing and configured to engage the bone;
- a cavity defined by the rod housing and the hook, wherein the cavity is configured to receive the bone therein;
- a purchase element housing comprising a distally extending slot and positioned proximal to the cavity;
- a purchase element movably disposed at least partially within the purchase element housing and configured to deploy into the cavity to engage the bone, wherein the purchase element comprises:
- a base slideably received within the purchase element housing;
- a purchase member extending from the base;
- and
- a lateral pin configured to be received within the distally extending slot of the purchase element housing.
9 more elements
A method for anchoring a spinal rod to a bone, the method comprising:
- coupling a bone anchor to the bone, wherein the bone anchor comprises:
- a rod housing configured to receive the spinal rod therethrough;
- a hook distal to the rod housing and configured to engage the bone;
- a cavity defined by the rod housing and the hook, wherein the cavity is configured to receive the bone therein;
- a purchase element housing positioned proximal to the cavity, wherein the purchase element housing comprises a distally extending slot, and wherein the purchase element comprises a lateral pin configured to be received within the distally extending slot;
- a purchase element movably disposed at least partially within the purchase element housing and configured to deploy into the cavity to engage the bone, wherein the purchase element comprises:
- a base slideably received within the purchase element housing, and a purchase member extending from the base;
- inserting the spinal rod into the rod housing of the bone anchor;
- and
- using a locking cap configured to engage the rod housing, locking the spinal rod to the bone anchor.
7 more elements
Dependencies are inferred from the claim text.