title: A new design of a Nitinol ring-like wire for suturing in deep surgical field.
abstract: The present work proposes a new suturing procedure based on self-accommodating suture points. Each suture point is made of a commercial NiTi wire hot-shaped in a single loop ring; a standard suture needle is then fixed at one end of the NiTi suture. According to this simple geometry, several NiTi suture stitches have been prepared and tested by tensile test to verify the closing force in comparison to that of commercial sutures. Further experimental tests have also been performed on anatomic samples from animals to verify the handiness of the NiTi suture. Moreover, surface quality of sutures has been carefully investigated via microscopy. Results show that the NiTi suture expresses high stiffness and a good surface quality. In addition, the absence of manual knotting allows for a simple, fast and safe procedure.
authors.affiliation: Consiglio Nazionale delle Ricerche, Istituto per l'Energetica e le Interfasi (CNR-IENI), Corso Promessi Sposi 29, 23900 Lecco, Italy. Electronic address: a.nespoli@ieni.cnr.it.
authors.forename: Adelaide
authors.initials: A
authors.lastname: Nespoli
authors.affiliation: ProMev, via Cavour, 41-23900 Lecco, Italy.
authors.forename: Villiam
authors.initials: V
authors.lastname: Dallolio
authors.affiliation: Consiglio Nazionale delle Ricerche, Istituto per l'Energetica e le Interfasi (CNR-IENI), Corso Promessi Sposi 29, 23900 Lecco, Italy.
authors.forename: Elena
authors.initials: E
authors.lastname: Villa
authors.affiliation: Consiglio Nazionale delle Ricerche, Istituto per l'Energetica e le Interfasi (CNR-IENI), Corso Promessi Sposi 29, 23900 Lecco, Italy.
authors.forename: Francesca
authors.initials: F
authors.lastname: Passaretti
mesh_terms: D000497:Alloys / Q000737:chemistry*; D000818:Animals; D008422:Materials Testing / Q000295:instrumentation; D009339:Needles; D009532:Nickel / Q000737:chemistry; D013536:Suture Techniques / Q000295:instrumentation*; D013537:Sutures; D014025:Titanium / Q000737:chemistry
chemical_list: D000497:Alloys; C040654:titanium nickelide; C013616:nitinol; D009532:Nickel; D014025:Titanium
keywords: Nitinol wire; Surgical suture; Tissue connector