Surgical instrument

Patent metadata

Field	Value
Publication number	US-12089858-B2
Application number	US-202318359334-A
Country	US
Kind code	B2
Filing date	Jul 26, 2023
Priority date	Dec 5, 2012
Publication date	Sep 17, 2024
Grant date	Sep 17, 2024

Abstract

A cannulated retrograde reamer configured to be disposed over a guidewire that is adjustable to create tunnels of multiple different diameters. The cannulated retrograde reamer substantially reduces the risk of tunnel malposition and/or misalignment, and can be adjusted to create a range of tunnel diameters, thereby allowing inventory levels to be reduced for a surgical case.

First claim

What is claimed is:

1. A method of drilling a bone tunnel, comprising:
introducing a retrograde reamer into a surgical site, the retrograde reamer comprising:
a first tubular shaft having a proximal end, a distal end, and a longitudinal axis extending therebetween;
a second tubular shaft moveably disposed about the proximal end of the first tubular shaft; and
at least one cutting member having a proximal end and a distal end, the distal end of the at least one cutting member pivotably coupled to the distal end of the first tubular shaft, the at least one cutting member having an arcuate shape to conform to an outer surface of the first tubular shaft in a closed position such that an outer surface of the at least one cutting member extends in-line with an outer surface of the second tubular shaft;

moving the second tubular shaft relative to the first tubular shaft; and
in response to the movement of the second tubular shaft relative to the first tubular shaft, displacing the cutting member from a closed position to an open position, thereby defining at least one cutting diameter;
wherein introducing the retrograde reamer into the surgical site comprises disposing the first tubular shaft over a guide wire.

2. The method of claim 1 , wherein moving the second tubular shaft relative to the first tubular shaft comprises rotating the second tubular shaft relative to the first tubular shaft.

3. The method of claim 1 , wherein moving the second tubular shaft relative to the first tubular shaft comprises axially moving the second tubular shaft relative to the first tubular shaft.

4. The method of claim 1 , wherein the first tubular shaft is a 4.5 mm reamer.

5. The method of claim 1 , further comprising drilling a first tunnel in bone with the distal end of the first tubular shaft in a first direction with the at least one cutting member in the closed position.

6. The method of claim 5 , further comprising overdrilling a second tunnel within the first tunnel in the bone in a second direction opposite the first direction with the at least one cutting member in the open position.

7. The method of claim 1 , wherein further comprising, prior to displacing the cutting member from a closed position to an open position, removing the guide wire from the first tubular shaft.

8. The method of claim 1 , wherein the at least one cutting member is two cutting members.

9. The method of claim 1 , wherein the cutting diameter is between about 6 mm and 13 mm.

Assignees

• Smith & Nephew Inc

Inventors

• Bowman Steven Mark
• Kennedy Iii James J
• Frick Sean M
• Trainer Glenn Kenneth
• Taylor Jon B
• Callaghan David J

Classifications

• A61B17/1617

  with mobile or detachable parts · CPC title

• A61B17/1675 Primary

  for the knee · CPC title