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Design Innovation Paper

Magnetic Chest Tube Positioning System

[+] Author and Article Information
Danuel Laan

Department of Surgery, Mayo Clinic. Division of Trauma, Critical Care, and General Surgery, 200 First ST SW, Rochester, MN 55905
laan.danuel@mayo.edu

Trang Ngoc Diem Vu

Department of Surgery, Mayo Clinic. Division of Trauma, Critical Care, and General Surgery, 200 First ST SW, Rochester, MN 55905
Vu.TrangNDiem@mayo.edu

Matthew Hernandez

Department of Surgery, Mayo Clinic. Division of Trauma, Critical Care, and General Surgery, 200 First ST SW, Rochester, MN 55905
Hernandez.Matthew@mayo.edu

Henry Schiller

Department of Surgery, Mayo Clinic. Division of Trauma, Critical Care, and General Surgery, 200 First ST SW, Rochester, MN 55905
Schiller.Henry@mayo.edu

1Corresponding author.

ASME doi:10.1115/1.4039208 History: Received August 01, 2017; Revised December 16, 2017

Abstract

Background: Chest tubes serve as life-saving adjuncts in thoracic trauma. Unfortunately, suboptimal positioning using the open, standard of care technique is associated with complications resulting in impaired tube thoracostomy (TT) function. Using a porcine model, we aimed to determine whether a Magnetic Chest Tube Positioning System (MCTPS) could be utilized to direct the intrathoracic position of a chest tube. Methods: Using recently deceased cross-bred domestic swine, we performed TT using our MCTPS and the standard of care open technique. The operator held one magnet on the outside of the chest. The second magnet was positioned at the distal aspect of the chest tube. The operator was tasked with moving the tube to distinct pre-marked intrathoracic locations under blinded conditions. The experiment was video-recorded through an open sternotomy incision. Control maneuvers were performed using the standard of care open technique. Results: The MCTPS was successful in directing a chest tube from one pre-marked location to another on 4 of 5 attempts (80%). Conversely, the control chest tube with no magnet failed to navigate the intra-thoracic cavity from one pre-marked location to the next with 0 of 5 attempts successful (p=0.05). Conclusion: Positional flaws in chest tube placement are common. We demonstrate the MCTPS efficacy as an alternative to the traditional hand-guided method under simulated placement conditions. The MCTPS is possibly superior to the current standard of care technique of TT. Additional studies are needed to develop this emerging technology in humans.

Copyright (c) 2018 by ASME
Topics: Magnets , Cavities
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