Abstract:
:The mechanism underlying tissue fusion mediated by laser irradiation remains unclear. We clarify the mechanisms underlying laser-mediated tissue fusion using a novel model. Microscopic examinations of morphological changes within the adventitia of a bovine carotid artery and a collagen sheet prepared from bovine dermis showed collagen fibril bundle loosening and collagen fibre swelling following heating at 46 °C. An incised bovine carotid artery covered with a collagen sheet to which pressure and laser heat of 40 °C-52 °C were applied created a structure that was pressure resistant to >300 mmHg. Microscopic analyses of the irradiation site showed collagen fibril interdigitation. Hence, low-temperature laser-mediated tissue fusion causes collagen fibril bundles to loosen and swell, and crimping causes the fibres to intertwine. As the temperature declines, the loosened and swollen fibrils and fibres tighten, and collagen fibre interdigitation is completed. This technology could be applied to fuse tissues during surgery.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Sasaki S,Ikeda T,Okihara SI,Nishimura S,Nakadate R,Saeki H,Oki E,Mori M,Hashizume M,Maehara Ydoi
10.1038/s41598-019-45486-4subject
Has Abstractpub_date
2019-06-28 00:00:00pages
9383issue
1issn
2045-2322pii
10.1038/s41598-019-45486-4journal_volume
9pub_type
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