Comparing scissors and scalpels to a novel surgical instrument: a biomechanical sectioning study

Autor: Zach Spears, Molly Paras, Lauren Fitzsimmons, Logan De Lacy, Peter Wawrzyn, Sam Conway, Srihari Gopalan, Kyle Muckenhirn, John Puccinelli
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: BMC Biomedical Engineering, Vol 6, Iss 1, Pp 1-9 (2024)
Druh dokumentu: article
ISSN: 2524-4426
DOI: 10.1186/s42490-024-00085-x
Popis: Abstract Background This study introduces a novel surgical instrument to reduce iatrogenic nerve injuries during procedures such as carpal tunnel and ulnar nerve decompression surgery. These injuries often result from direct damage to surrounding tissues by surgical instruments, whose designs have remained largely unchanged over the past decades. The novel device is a modified surgical forceps that has a deployable surgical scalpel that runs along a groove on the forceps. This design protects important anatomical structures while allowing fast dissection and cutting of fascial layers. Methods The process used to develop a novel instrument included computer-aided design (CAD) modeling, 3D printing for prototyping, and the fabrication of an aluminum prototype. Biomechanical testing was performed with the novel device, iris scissors, bandage scissors, and a scalpel on an MTS Static Materials Test System. The peak force to slide-cut, number of cut attempts, and percentage cut on first attempt were compared between the prototype and traditional surgical tools. The materials cut in testing were Ace™ bandage, stockinette, and gauze. Statistical analyses were performed using Welch’s t-tests and Fisher’s exact tests. Results Compared to conventional bandage and iris scissors, the novel surgical instrument required significantly less force to cut through an Ace™ bandage, stockinette, and gauze (p
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