Medical device anchor and delivery system

A medical device anchor and delivery system for propelling an anchor through a body wall from a first side to a second side where said anchor expands against said second side comprising:

• an anchor shaft having a proximal end and a distal end,
• an expandable anchor at the distal end of said anchor shaft having one or more anchor sections, said expandable anchor having a first collapsed configuration wherein said anchor is substantially coextensive with said anchor shaft and a second expanded configuration wherein said one or more anchor sections extend arcuately outwardly from said anchor shaft and loop back to cross and extend beyond said anchor shaft to form one or more closed loops,
• a shaft support hub connected to the proximal end of said anchor shaft,
• an elongate tube having an entry end and an exit end, said tube containing said anchor shaft with said expandable anchor in said collapsed configuration adjacent to said exit end, and
• a drive shaft having a first end in engagement with said shaft support hub and operative when propelled to cause said shaft support hub to move said anchor shaft longitudinally of said elongate tube to propel said expandable anchor outwardly from the exit end of said tube.

A blood clot filter with an anchor delivery system for propelling one or more anchors through the wall of a blood vessel from a first inner side to a second outer side, the blood clot filter having a central longitudinal axis and being collapsible to a collapsed configuration toward said longitudinal axis and expandable in an expanded configuration outwardly from said longitudinal axis for contact with said inner side of the wall of said blood vessel, said blood clot filter with anchor delivery system comprising:

• a plurality of elongate, spaced legs each having a distal end and a proximal end, the proximal ends of said elongate legs being secured together adjacent to the longitudinal axis of said blood clot filter, said plurality of elongate spaced legs being formed to extend outwardly away from said longitudinal axis to bring the distal ends thereof into contact with the first inner side of a blood vessel in the expanded configuration of said blood clot filter, one or more of said elongate spaced legs being tubular in configuration with an open distal and an open proximal end,
• an elongate anchor shaft mounted for longitudinal movement in each of said tubular elongate legs, each said elongate anchor shaft having first and second opposed ends,
• an expandable anchor at the second end of each of said anchor shafts, said expandable anchor having one or more anchor sections with a first collapsed configuration wherein said anchor is substantially coextensive with said anchor shaft and a second expanded configuration wherein said one or more anchor sections extend outwardly from said anchor shaft and loop back to cross and extend beyond said anchor shaft to form one or more closed loops,
• said tubular elongate legs each containing said expandable anchor in the first collapsed condition adjacent to the open distal end thereof, and
• a shaft support hub connected to the first end of each elongate anchor shaft, said shaft support hub being spaced from the proximal ends of said elongate legs when an expandable anchor in the first collapsed condition is contained in said tubular elongate legs, said shaft support hub being movable toward said proximal ends of said elongate legs to move said anchor shafts longitudinally to propel said expandable anchors out from the open distal ends of said tubular elongate legs and through the wall of a blood vessel.