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Titolo:
New embolization coil containing a nitinol wire core: Preliminary in vitroand in vivo experiences
Autore:
Konya, A; Maxin, M; Wright, KC;
Indirizzi:
Univ Texas, MD Anderson Canc Ctr, Dept Diagnost Radiol, Houston, TX 77030 USA Univ Texas Houston TX USA 77030 pt Diagnost Radiol, Houston, TX 77030 USA
Titolo Testata:
JOURNAL OF VASCULAR AND INTERVENTIONAL RADIOLOGY
fascicolo: 7, volume: 12, anno: 2001,
pagine: 869 - 877
SICI:
1051-0443(200107)12:7<869:NECCAN>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
PATENT DUCTUS-ARTERIOSUS; PULMONARY ARTERIOVENOUS-MALFORMATIONS; COOK DETACHABLE COILS; TRANSCATHETER OCCLUSION; GIANTURCO COILS; SNARE; COMPLICATIONS; CLOSURE; THERAPY; DEVICE;
Keywords:
arteries, embolization; embolization;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: Konya, A Univ Texas, MD Anderson Canc Ctr, Dept Diagnost Radiol, 1515 Holcombe Blvd,Box 057, Houston, TX 77030 USA Univ Texas 1515 Holcombe Blvd,Box 057 Houston TX USA 77030 30 USA
Citazione:
A. Konya et al., "New embolization coil containing a nitinol wire core: Preliminary in vitroand in vivo experiences", J VAS INT R, 12(7), 2001, pp. 869-877

Abstract

PURPOSE: To improve the stability of the standard stainless steel embolization coil by adding a nitinol wire core. MATERIALS AND METHODS: With use of one coil with a nitinol wire core and one without one, stability and resistance to elongation were measured in vitro. Thirty-one factory-made stainless-steel macrocoils equipped with preshaped nitinol wire cores were acutely deployed into branches of the superior mesenteric artery (SMA) in five pigs (part I of the study). Fifteen homemade retrievable coils with thermal shape memory (TSM) nitinol wire cores wereacutely deployed in the abdominal aortae or inferior venae cavae of four pigs (part II). Coils with a superelastic (SE) nitinol wire core (n = 9), a TSM nitinel wire core (n = 5), and without a core (n = 5) were compared in carotid embolization (part III). RESULTS: In vitro, the expansile strength of the reinforced coils was significantly greater and elongation was significantly less than the standard coils (P < .01). In part I, coils were easily deployed via diagnostic catheters. In part II, ability to reposition the coils facilitated optimal coil configuration, which resulted in effective self-anchoring and occlusion. In part III, no coils with a SE core migrated, whereas one of five with a TSM core and three of five without reinforcement migrated immediately. The coresignificantly increased coil stability and postplacement configuration (P < .01). CONCLUSIONS: Addition of a nitinol wire core increases the intravascular stability of the standard embolization coil by significantly enhancing expansile force and postplacement configuration. The wire core does not adversely affect the handling of the coil. The ability to reposition/retrieve the coil is a desirable feature.

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Documento generato il 06/04/20 alle ore 01:33:19