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

doi:10.4240/wjgs.v16.i3.860

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Mar 27, 2024 (publication date) through Apr 29, 2024

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World Journal of Gastrointestinal Surgery

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1948-9366

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Baishideng Publishing Group Inc, 7041 Koll Center Parkway, Suite 160, Pleasanton, CA 94566, USA

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World J Gastrointest Surg. Mar 27, 2024; 16(3): 860-870
Published online Mar 27, 2024. doi: 10.4240/wjgs.v16.i3.860

Table 1 Parameters of the powerful magnet and common magnet

Group	Material (NdFeB)	Size (mm)	Weight (g)	Surfaces modification	MFD (mT)	Magnetic force (N)
Group	Material (NdFeB)	Size (mm)	Weight (g)	Surfaces modification	MFD (mT)	0 mm¹	0.5 mm¹	1 mm¹
Powerful magnet	N52	D = 5	0.44	Nickel coating	421	8.26	5.07	3.44
Powerful magnet	N52	H = 3	0.44	Nickel coating	421	8.26	5.07	3.44
Common magnet	N35	D = 5	0.40	Nickel coating	283	4.10	2.65	1.78
Common magnet	N35	H = 3	0.40	Nickel coating	283	4.10	2.65	1.78

¹The distance between the working faces of the two magnets. D: Diameter; H: Height; MFD: Magnetic flux density.

Table 2 Sample data and observation index data

	Powerful magnet group	Common magnet group	P value
Subjects, n	12	12	1.00
Gender, n (%)
Male	6 (50)	6 (50)	1.00
Female	6 (50)	6 (50)
Weight (g)	234.3 ± 13.5	233.0 ± 14.4	0.828
Operative time (min)	11.6 ± 2.3	11.8 ± 2.4	0.865
Magnet discharge time (d)	5.3 ± 1.4	5.6 ± 1.1	0.513
Bursting pressure (mmHg)	261.3 ± 6.0	264.3 ± 6.9	0.266
Anastomotic diameter (mm)	5.5 ± 0.4	5.8 ± 0.5	0.095

Citation: Tian BY, Zhang MM, Ma J, Lyu Y, Yan XP. Influence of different magnetic forces on the effect of colonic anastomosis in rats. World J Gastrointest Surg 2024; 16(3): 860-870
URL: https://www.wjgnet.com/1948-9366/full/v16/i3/860.htm
DOI: https://dx.doi.org/10.4240/wjgs.v16.i3.860