Biomaterial Database

Guide-wire entrapment by inferior vena caval filters: in vitro evaluation. 1996

J A Kaufman, and J W Thomas, and S C Geller, and S M Rivitz, and A C Waltman

Department of Radiology, Massachusetts General Hospital, Boston 02114, USA.

OBJECTIVE To study guide-wire engagement and entrapment by inferior vena caval (IVC) filters. METHODS Patterns of engagement were determined in six IVC filters with four commonly used guide wires in a simulated IVC. Force required to disengage guide wires from filters was measured. RESULTS Eleven engagement patterns were identified with J-tipped guide wires; straight guide wires never engaged. The Simon-Nitinol filter engaged guide wires with the highest frequency (P < .05). The 15-J wire was engaged most frequently overall (P < .0005) but disengaged with forces not significantly different (P > .05) from those required to open the J. Entrapment occurred with only the Vena-Tech (VT) and 12-F stainless steel Greenfield (12SSG) filters and the 1.5-J and 3-J guide wires. The former guide wire became entrapped regardless of engagement pattern; the latter became entrapped only when engaged in the hole in the apex of the 12SSG and VT filters. CONCLUSIONS Guide wires with a J tip 3 mm or less in radius are at risk for entrapment by the 12SSG and VT filters.

UI	MeSH Term	Description	Entries
D008961	Models, Structural	A representation, generally small in scale, to show the structure, construction, or appearance of something. (From Random House Unabridged Dictionary, 2d ed)	Model, Structural,Structural Model,Structural Models
D002405	Catheterization, Central Venous	Placement of an intravenous CATHETER in the subclavian, jugular, or other central vein.	Central Venous Catheterization,Venous Catheterization, Central,Catheterization, Central,Central Catheterization,Catheterizations, Central,Catheterizations, Central Venous,Central Catheterizations,Central Venous Catheterizations,Venous Catheterizations, Central
D004867	Equipment Design	Methods and patterns of fabricating machines and related hardware.	Design, Equipment,Device Design,Medical Device Design,Design, Medical Device,Designs, Medical Device,Device Design, Medical,Device Designs, Medical,Medical Device Designs,Design, Device,Designs, Device,Designs, Equipment,Device Designs,Equipment Designs
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D014682	Vena Cava, Inferior	The venous trunk which receives blood from the lower extremities and from the pelvic and abdominal organs.	Inferior Vena Cava,Inferior Vena Cavas,Vena Cavas, Inferior
D016306	Vena Cava Filters	Mechanical devices inserted in the inferior vena cava that prevent the migration of blood clots from deep venous thrombosis of the leg.	Inferior Vena Cava Filters,Umbrella Filters,Filter, Inferior Vena Cava,Filters, Inferior Vena Cava,Inferior Vena Cava Filter,Cava Filter, Vena,Cava Filters, Vena,Filter, Umbrella,Filter, Vena Cava,Filters, Umbrella,Filters, Vena Cava,Umbrella Filter,Vena Cava Filter