Expandable metal stent placement was the most effective therapy for tracheostenosis induced by nodular goiter.Patients with tracheostomy cannula placement were at high risk of severe infection.
It was believed that proper fixation of the biomaterial could only be insured by its placement in direct contact with the fascia of the transversalis muscle.
Firstly, there are two types of winding patterns for toroidal vessel: spiral winding along toroidal vessel geodesics and analogous sine placement along the external surface of toroidal vessel.