System and method for inserting a fastener into bone

Patent metadata

Field	Value
Publication number	US-12484944-B2
Application number	US-202318314391-A
Country	US
Kind code	B2
Filing date	May 9, 2023
Priority date	Oct 22, 2019
Publication date	Dec 2, 2025
Grant date	Dec 2, 2025

Abstract

An insertion guide for guiding a fastener having a head and a shaft. The insertion guide includes a sidewall constructed of a biocompatible material having an entrance end, an exit end, and a cavity extending from the entrance end to the exit end. The sidewall has a guide portion and a fastener connector portion. The guide portion of the sidewall extends from the entrance end toward the exit end, and the fastener connector portion of the sidewall extends from the exit end toward the guide portion. The sidewall in the guide portion is configured such that the cavity has a first cross-sectional distance greater than the head of the fastener. The sidewall in the fastener connector portion has a second cross-sectional distance greater than the shaft, and less than the head.

First claim

What is claimed is:

1 . An insertion guide assembly for guiding fasteners one at a time into bone, the insertion guide assembly comprising:
an insertion guide having a sidewall extending between an entrance end and an exit end, and a cavity extending from the entrance end to the exit end, the cavity at the entrance end having a first cross sectional distance greater than a diameter of a head of a fastener, the sidewall at exit end having a second cross sectional distance less than the diameter of the head of the fastener; and, a drill guide configured to be telescopically nested within the insertion guide, wherein the drill guide has a first end, a second end, and a second sidewall extending between the first end and the second end, the first end of the drill guide having an opening with a third diameter sized and configured to receive a drill bit.

2 . The insertion guide assembly of claim 1 , wherein the exit end of the insertion guide includes a fastener connector portion having a collet with a plurality of fingers defining the cavity at the exit end of the sidewall, the fingers being constructed of a spring-like material configured to be movable outwardly from a resting position to an expanded position such that the cavity has a third cross sectional distance greater than the diameter of the head of the fastener, and configured to be movable inwardly from the expanded position to the resting position.

3 . The insertion guide assembly of claim 2 , wherein the plurality of fingers of the exit end of the sidewall includes a first finger and a second finger, the first finger having a first side and a second side, the second finger having a third side and a fourth side, the first side of the first finger and the fourth side of the second finger defining a slot.

4 . The insertion guide assembly of claim 2 , wherein the exit end of the insertion guide includes a fastener connector portion cavity, the plurality of fingers of the fastener connector portion of the sidewall includes a first finger, a second finger, and a third finger positioned around the fastener connector portion cavity, the fastener connector portion cavity having the first cross sectional distance and the second cross sectional distance.

5 . The insertion guide assembly of claim 4 , wherein the second cross sectional distance is defined by the sidewall when the fingers are in the resting position.

6 . The insertion guide assembly of claim 1 , wherein the second sidewall of the drill guide has a tip extending from the second end towards the first end, the second end of the drill guide having a second opening substantially similar to the third diameter sized and configured to permit the drill bit to exit the second sidewall, a first thickness of the second sidewall in the tip is less than a second thickness of the second sidewall adjacent to the tip.

7 . The insertion guide assembly of claim 1 , wherein the drill guide is configured to removably lock in the insertion guide.

8 . The insertion guide assembly of claim 7 , wherein the second sidewall of the drill guide includes at least one protrusion configured to mate with a corresponding recess on the sidewall of the insertion guide.

9 . The insertion guide assembly of claim 8 , wherein the first end of the drill guide includes a plurality of tabs and the second sidewall of the drill guide includes a plurality of slots extending from the first end towards the second end, the second sidewall being constructed of a material configured to bias the plurality of tabs apart.

10 . The insertion guide assembly of claim 1 , wherein the exit end of the sidewall is configured to be a tapered end.

11 . The insertion guide assembly of claim 1 , wherein the insertion guide includes a handle positioned at the entrance end of the insertion guide.

12 . A method of making an insertion guide assembly, comprising:
forming a sidewall having an entrance end, and an exit end, and a cavity defined by an interior surface of the sidewall extending from the entrance end to the exit end, the sidewall at the entrance end sized and configured to have a first cross-sectional distance greater than a diameter of a head of a fastener, the sidewall at the exit end having a second cross-sectional distance less than the diameter of the head of the fastener, an exterior surface of the sidewall spaced outwardly from the interior surface, the interior surface of the sidewall having at least one recess configured to mate with a corresponding protrusion on a drill guide; and inserting the drill guide into the cavity of the insertion guide such that the drill guide is telescopically nested within the insertion guide, wherein the drill guide has a first end, a second end, and a second sidewall extending between the first end and the second end, the first end of the drill guide having an opening with a third diameter sized and configured to receive a drill bit.

13 . The method of claim 12 , further comprising forming the sidewall of the exit end as a collet having a plurality of fingers defining the cavity at the exit end of the sidewall, the fingers being constructed of a spring-like material to be movable outwardly from a resting position to an expanded position, and movable inwardly from the expanded position to the resting position.

14 . The method of claim 13 , further comprising forming the plurality of fingers of the sidewall with a first finger and a second finger, the first finger having a first side and a second side, the second finger having a third side and a fourth side, the first side of the first finger and the fourth side of the second finger defining a slot.

15 . The method of claim 13 , further comprising forming the cavity to include a fastener connector portion cavity located at the exit end of the sidewall, the plurality of fingers includes a first finger, a second finger, and a third finger positioned around the fastener connector portion cavity, the fastener connector portion cavity having the first cross-sectional distance and the second cross-sectional distance.

16 . The method of claim 13 , further comprising forming the exit end of the sidewall to articulate within a fastener hole of a reconstruction plate.

17 . The method of claim 16 , further comprising forming the sidewall at the exit end of the insertion guide to include a protrusion configured to decrease the first cross-sectional distance across the cavity at the protrusion, the protrusion having a proximal end, a distal end, and a length extending between the proximal end and the distal end, wherein the length is less than a length of a shaft of the fastener.

18 . The method of claim 12 , further comprising forming the sidewall to have a first thickness extending between the interior surface and the exterior surface at the entrance end, and a second thickness extending between the interior surface and the exterior surface in at the exit end of the sidewall, the second thickness being greater than the first thickness.

19 . A method, comprising:
inserting a drill guide into a cavity of an insertion guide; placing the insertion guide through an incision within a patient until an exit end of the insertion guide is positioned adjacent to a bone of the patient; inserting a drill bit into an opening at a first end of the drill guide, the drill bit extending through a cavity of the drill guide and through an opening in a second end of the drill guide; drilling a pilot hole in the bone of the patient using the drill bit; removing the drill bit from the drill guide; re

Assignees

• Depuy Synthes Products Inc

Inventors

• Stockdill Megan
• Barrall Benjamin
• Van Citters Peter

Classifications

• A61B17/90

  Guides therefor · CPC title

• A61B2017/00526

  Methods of manufacturing · CPC title

• A61B17/8066

  for pelvic reconstruction · CPC title

• A61B17/8057

  the interlocking form comprising a thread · CPC title

• A61B17/1746

  for the acetabulum · CPC title