Absorbable Mg surgical tack: Proof of concept &in situ fixation strength

Sean Johnston; Cora Lau; Matthew S Dargusch; Andrej Atrens

doi:10.1016/j.jmbbm.2019.05.035

Absorbable Mg surgical tack: Proof of concept &in situ fixation strength

J Mech Behav Biomed Mater. 2019 Sep:97:321-329. doi: 10.1016/j.jmbbm.2019.05.035. Epub 2019 May 22.

Authors

Sean Johnston¹, Cora Lau², Matthew S Dargusch³, Andrej Atrens⁴

Affiliations

¹ The University of Queensland, Materials Engineering, School of Mechanical & Mining Engineering, Brisbane, Qld, 4072, Australia; The University of Queensland, Centre for Advanced Materials Processing and Manufacturing (AMPAM), Brisbane, Qld, 4072, Australia. Electronic address: sean.johnston@uqconnect.edu.au.
² The University of Queensland, Biological Resources, Brisbane, Qld, 4072, Australia.
³ The University of Queensland, Centre for Advanced Materials Processing and Manufacturing (AMPAM), Brisbane, Qld, 4072, Australia.
⁴ The University of Queensland, Materials Engineering, School of Mechanical & Mining Engineering, Brisbane, Qld, 4072, Australia.

PMID: 31153113
DOI: 10.1016/j.jmbbm.2019.05.035

Abstract

A prototype magnesium (Mg) surgical tack is tested comparatively against commercially available tacks made of titanium (ProTack^tm, Medtronic) and PLGA (AbsorbaTack^tm, Medtronic). The pull-out force is measured in situ in a lap-shear pull-out test, using porcine abdominal muscle tissue as a model. The Mg tack had a pull-out force comparable to those of the commercially available tacks. The majority of the Mg tacks also had a more ductile failure mode (i.e. the tacks deformed prior to failure), compared to the commercial tacks which pulled directly from the tissue with no deformation. The Mg tacks deformed as they were removed from the tissue, causing less damage to the tissue in the process. This is the first reported use of a Mg alloy in this application, and the proof of concept indicates that this is an area that deserves further interest and study.

Keywords: Hernia; Laparoscopic; Magnesium; Surgical tack.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Absorbable Implants*
Alloys
Animals
Equipment Design
Hernia, Ventral / surgery*
Herniorrhaphy
Laparoscopy
Magnesium / chemistry*
Polymers / chemistry
Stress, Mechanical
Surgical Mesh*
Sutures*
Swine
Tensile Strength
Titanium / chemistry

Substances

Alloys
Polymers
Titanium
Magnesium