Physical Bases, Indications, and Results of the Use of Magnets in Digestive Surgery: A Narrative Review

Trujillo-Loli, Yeray; Huamán, Moisés; Medina, Stefanie Campos; Landa, Josue Ismael Vega; Pérez, Rocío García; Soler, Eduardo María Targarona

doi:10.1089/lap.2021.0314

Cited by 2 publications

(3 citation statements)

References 57 publications

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“…Several feasibility studies have been performed on MCA, a new suture-free anastomosis method; however, its clinical application is limited[ 16 , 17 ]. On the one hand, there are few commercial magnetic anastomosis medical devices, and on the other hand, the basic research on MCA is weak.…”

Section: Discussionmentioning

confidence: 99%

Influence of different magnetic forces on the effect of colonic anastomosis in rats

Tian,

Zhang,

et al. 2024

World J Gastrointest Surg

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BACKGROUND Despite much work having been conducted on magnetic compression anastomosis (MCA) in the digestive tract, there are no reports on the influence of magnetic force on the anastomosis. AIM To investigate the effect of different magnetic force magnets on the MCA of the digestive tract. METHODS Two groups of magnets of the same sizes but different magnetic forces were designed and produced. A total of 24 Sprague-Dawley rats were randomly assigned into two groups (powerful magnet group and common magnet group), with 12 rats in each group. Two types of magnets were used to complete the colonic side-to-side anastomosis of the rats. The operation time and magnet discharge time were recorded. The anastomotic specimens were obtained 4 wk after the operation and then the burst pressure and diameter of the anastomosis were measured, and the anastomosis was observed via the naked eye and subjected to histological examination. RESULTS The magnetic forces of the powerful and common magnet groups at zero distance were 8.26 N and 4.10 N, respectively. The colonic side-to-side anastomosis was completed in all 24 rats, and the operation success rate and postoperative survival rate were 100%. No significant difference was noted in the operation time between the two groups. The magnet discharge time of the powerful magnet group was slightly longer than that of the common magnet group, but the difference was not statistically significant (P = 0.513). Furthermore, there was no statistical difference in the burst pressure (P = 0.266) or diameter of magnetic anastomosis (P = 0.095) between the two groups. The gross specimens of the two groups showed good anastomotic healing, and histological observation indicated good mucosal continuity without differences on healing. CONCLUSION In the rat colonic side-to-side MCA model, both the powerful magnet with 8.26 N and the common magnet with 4.10 N showed no significant impact on the anastomosis establishment process or its effect.

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Section: Discussionmentioning

confidence: 99%

Influence of different magnetic forces on the effect of colonic anastomosis in rats

Tian,

Zhang,

et al. 2024

World J Gastrointest Surg

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“…22,23 It has been shown to provide alternatives for retraction, anchoring, and compression among other critical surgical steps. 24 Even intraocular magnets have been found to be very helpful for removal of magnetic foreign bodies from the lens of the eye. 14 The use of this technology to remove a mFB from various anatomic areas is very logical and has been used extensively by plastic surgery, otolaryngology, ophthalmology, gastroenterology and general surgery groups worldwide [7][8][9][10][11][12][13][14][15][16][17][18][19][20] Although it appears to be a practical solution to a common problem that pediatric surgeons encounter and may reduce operative time and radiation exposure it has not been widely adopted in caring for children with soft tissue mFB.…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

The Novel Use of Rare Earth Magnets for the Extraction of Metallic Soft Tissue Foreign Bodies in Children

et al. 2023

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Introduction Metallic foreign bodies (mFB) are common following penetrating injuries in children. The mFB commonly occur in the head and neck region and extremity soft tissues. Removal may be indicated due to morbidity related to pain or migration. Extraction can be challenging to localize, often requiring wide exposure, and may be difficult to achieve in cosmetically sensitive areas. Different technological adjuncts have been used to facilitate foreign body removal including fluoroscopy, ultrasound, and more recently in adults, surgical magnets. The most powerful commercially available magnets are rare earth magnets comprised of neodymium iron and boron (Ndy). With the goal of reducing radiation exposure and the morbidity of mFB removal with associated soft tissue injury in children, a strategy was introduced utilizing Ndy to optimize extraction with minimal soft tissue surgical dissection. Materials and Methods Two children with extremity mFB treated with Ndy between January 2021 and July 2021 were analyzed. We utilized commercially available ring type neodymium-iron-boron magnets with dimensions of 1 3/8-inch outer diameter x 1/8-inch inner diameter and 1/16 inch thick with a power of 13 200 gauss that were processed for use according to our hospital protocols. Our main clinical indication was for the detection and retrieval of small ferromagnetic foreign bodies embedded in superficial extremity soft tissues. Results In the operating room under general anesthesia, the mFB were localized utilizing fluoroscopy. A 1.0 cm skin incision was made into the subdermal soft tissues overlying the area of the mFB. No surgical tissue dissection was performed. The mFB could not be visualized in the soft tissue. Using fluoroscopy to localize the mFB, the Ndy was then placed into the wound in close proximity to the mFB. The mFB were immediately magnetized to the Ndy and the mFB were extracted from the soft tissues without any further surgical dissection. Two simple interrupted nylon sutures were placed to close the incision. The total operative time was 2 and 2.5 minutes respectively. The children recovered uneventfully and are without complication. Conclusions The use of Ndy to remove extremity soft tissue mFB in children appears to be feasible, safe, and efficient. Use of the Ndy allowed extraction via a small incision, optimizing the aesthetic result and avoiding the need for cross-sectional imaging, extensive surgical dissection, tissue reconstruction and prolonged operative time or x-ray exposure. The development of magnets of increasing energy density may be indicated to further optimize metallic soft tissue foreign body extraction in children in a minimally invasive manner.

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Physical Bases, Indications, and Results of the Use of Magnets in Digestive Surgery: A Narrative Review

Cited by 2 publications

References 57 publications

Influence of different magnetic forces on the effect of colonic anastomosis in rats

Influence of different magnetic forces on the effect of colonic anastomosis in rats

The Novel Use of Rare Earth Magnets for the Extraction of Metallic Soft Tissue Foreign Bodies in Children

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