Implant insertion tool for use in a surgical procedure to implant a stemless humeral component

Patent metadata

Field	Value
Publication number	US-10034777-B2
Application number	US-201313803533-A
Country	US
Kind code	B2
Filing date	Mar 14, 2013
Priority date	Mar 30, 2012
Publication date	Jul 31, 2018
Grant date	Jul 31, 2018

Abstract

A stemless humeral component for replacing the humeral head of a patient's humerus includes a support flange having a number of cantilevered legs extending distally away from a bottom surface thereof. Instruments and methods for surgically installing the stemless humeral component are also disclosed.

First claim

The invention claimed is:

1. A surgical instrument for use during a surgical procedure to implant a stemless humeral component to replace the humeral head of a patient's humerus, comprising:
an implant insertion tool comprising (i) a body having an elongated bore extending therethrough, (ii) a locking rod captured in the bore so as to rotate freely relative to the body, the locking rod having a knob formed on a proximal end thereof, and a set of locking threads formed in a distal end thereof, and (iii) an alignment collar having a number of alignment keys extending downwardly from a lower surface thereof,
wherein (i) a distal end of the elongated bore opens into the lower surface of the alignment collar, and (ii) the locking rod extends outwardly from the distal end of the elongated bore such that the locking threads extend from within the elongated bore, through the distal end of the elongated bore, and to a distal tip spaced apart from the alignment collar, and are positioned between the alignment keys of the alignment collar, and
wherein the knob is configured to rotate relative to the body and rotation of the knob causes rotation of the locking threads, and
wherein each of the alignment keys is positioned in a location that aligns with a number of viewing windows of the stemless humeral component.

2. The surgical instrument of claim 1 , wherein an upper surface of the knob comprises a metallic impact surface.

3. The surgical instrument of claim 1 , wherein the implant insertion tool further comprises a grip secured to the elongated body.

4. The surgical instrument of claim 1 , wherein the alignment collar is annular shaped.

5. An implant insertion tool for use during a surgical procedure to implant a stemless humeral component to replace the humeral head of a patient's humerus, comprising:
a body having an elongated bore extending therethrough,
a locking rod captured in the bore so as to rotate freely relative to the body, the locking rod having a set of locking threads formed in a distal end thereof,
a knob secured to a proximal end of the locking rod, such that rotation of the knob causes rotation of the locking threads, and
an alignment collar having a number of alignment keys extending downwardly from a lower surface thereof, wherein (i) a distal end of the elongated bore opens into the lower surface of the alignment collar, and (ii) the locking rod extends outwardly from the distal end of the elongated bore such that the locking threads extend from within the elongated bore, through the distal end of the elongated bore, and to a distal tip spaced apart from the alignment collar, and are positioned between the alignment keys of the alignment collar,
wherein each of the alignment keys is positioned in a location that aligns with a number of viewing windows of the stemless humeral component.

6. The implant insertion tool of claim 5 , wherein an upper surface of the knob comprises a metallic impact surface.

7. The implant insertion tool of claim 5 , further comprising a grip secured to the elongated body.

8. The implant insertion tool of claim 5 , wherein the alignment collar is annular shaped.

Assignees

• Depuy Synthes Products Inc

Inventors

• Poncet Didier
• Warlop David M
• Zanchin Laurent

Classifications

• A61F2/4603

  for insertion or extraction of endoprosthetic joints or of accessories thereof · CPC title

• A61F2002/30904

  serrated profile, i.e. saw-toothed · CPC title

• A61F2002/30616

  Sets comprising a plurality of prosthetic parts of different sizes or orientations · CPC title

• A61B90/06

  Measuring instruments not otherwise provided for · CPC title

• A61F2002/4007

  implanted without ablation of the whole natural humeral head · CPC title