Surgical pin positioning lock
AssigneeTreace Medical Concepts, Inc.
InventorsJohn T. Treace, Sean F. Scanlan, Carlos Eduardo Gil, Joe W. Ferguson
Life of this patent
Estimating the term…
Abstract
A pin lock may be used to prevent a compressor-distractor from pushing off of a surgical pin as the compressor-distractor is actuated to move one bone relative to another bone. In some examples, the compressor-distractor is attached to a metatarsal with a first pin and to a cuneiform with a second pin. The pin lock can be inserted onto the first pin or the second pin, optionally with a second pin lock inserted onto the other pin. The compressor-distractor can then be actuated while the compressor-distractor is locked by the pin lock from moving up along the axial length of the first pin or the second pin.
Claims19
A method comprising:
- attaching a compressor-distractor to a first bone portion by at least inserting a first pin through a first pin-receiving hole of the compressor-distractor and into the first bone portion;
- attaching the compressor-distractor to a second bone portion by at least inserting a second pin through a second pin-receiving hole of the compressor-distractor and into the second bone portion;
- and
- after attaching the compressor-distractor to the first bone portion and/or the second bone portion, inserting a pin lock onto the first pin or the second pin, the pin lock locking a position of the compressor-distractor along an axial length at least one of the first pin and the second pin.
A surgical pin positioning lock comprising:
- a bearing retaining body defining a pin receiving hole extending axially therethrough, the bearing retaining body defining a bearing receiving cavity extending from an outer perimeter surface to the pin receiving hole and including a bearing contained therein;
- a piston defining at least one sidewall and a top wall which, collectively, form a cavity, the top wall of the piston defining a pin receiving hole extending therethrough, the at least one sidewall defining an inward taper over at least a portion of its length;
- a biasing member;
- and
- a base defining at least one sidewall and a bottom wall,
- wherein the bearing retaining body is at least partially inserted into the cavity of the piston with the pin receiving hole of the bearing retaining body being axially aligned with the pin receiving hole extending through the top wall of the piston,
- the biasing member is positioned between the bearing retaining body and the top wall of the piston and configured to bias the bearing retaining body away from the top wall of the piston,
- the piston is configured to move relative to the bearing retaining body, causing the inward taper on the at least one sidewall to move relative to the bearing and thereby causing the bearing to move into or out of the pin receiving hole, and
- the bearing retaining body is positioned at least partially between the bottom wall of the base and the biasing member.
Dependencies are inferred from the claim text.