Patent ID: 9649183
Date: 2017-05-16
CPC Classifications: A61F

Claim:
1. A delivery apparatus for introducing an intravascular filter into a body vessel of a patient, said delivery apparatus comprising: a sheath having an annular wall defining a lumen; an intravascular filter positioned in said lumen, said intravascular filter having primary struts and secondary struts cooperatively arranged for a two-step deployment into said body vessel, said secondary struts being constructed and arranged for deployment first and said primary struts being constructed and arranged for deployment second; a delivery device positioned in said lumen, each primary strut having an end secured to a common hub and an opposite free end which is captured within said delivery device for said two-step deployment of said intravascular filter and each secondary strut having an end secured to said common hub and an opposite free end; and an ultrasound transducer positioned to an application side of said intravascular filter, wherein introduction of said intravascular filter into said body vessel includes release of said free ends of the primary struts from within said delivery device as the second step of said two-step deployment.