Medical device anchor and delivery system
First Claim
1. A medical device anchor for penetration through a body wall from a first side to a second side thereof and expansion 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 a closed loop.
3 Assignments
0 Petitions
Accused Products
Abstract
A method and apparatus for anchoring a medical implant device after the device has been brought to rest at a desired position within a blood vessel or other body passageway. An anchor delivery system is provided which houses one or more uniquely configured expandable anchors which are connected to the medical implant device. The anchors remain housed in a non expanded configuration until after the medical implant device has come to rest in a desired position within the body, and then the anchors are positively propelled through a body wall from a first side to a second side where each anchor expands outwardly from an anchor shaft. In one configuration, the anchors are each formed in the shape of a compressible closed loop which extends outwardly from an anchor shaft and loops back to cross over and extend beyond the anchor shaft. To positively propel the anchors, a drive shaft for the anchor shafts extends back to a triggering unit which, when activated, causes the drive shaft to drive the anchor shafts in a direction which results in propulsion of the anchors through the body wall.
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Citations
26 Claims
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1. A medical device anchor for penetration through a body wall from a first side to a second side thereof and expansion against said second side comprising:
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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 a closed loop. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. 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:
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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. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. 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:
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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. - View Dependent Claims (16, 17, 18, 19, 20)
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21. A method for positioning and anchoring a blood clot filter having a plurality of elongate spaced legs adapted to expand outwardly from a filter longitudinal axis to bring a side portion of each of said legs above but adjacent to a free end thereof into contact with the inner surface of a blood vessel wall having an inner and outer surface which includes:
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enclosing an expandable anchor in a non expanded state within one or more of said elongate spaced legs, causing said elongate spaced legs to collapse toward the longitudinal axis of said filter, transporting said blood clot filter with the legs collapsed through a blood vessel to a desired position, causing said elongate spaced legs to expand to bring the side portion thereof into contact with the inner surface of said blood vessel wall, and subsequently propelling said expandable anchor in the non expanded state out of the side portion of one or more of said elongate legs at a position spaced above the free end thereof and through the blood vessel wall for expansion against the outer side of the blood vessel wall. - View Dependent Claims (22)
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23. 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:
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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 outwardly from said anchor shaft, a shaft support hub connected to the proximal end of said anchor shaft, an elongate tube having an open entry end and a closed free end opposite to said entry end with a side opening in said tube spaced above said closed free end, said tube containing said anchor shaft and said expandable anchor when said expandable anchor is in said collapsed configuration, and a drive shaft having a first end for engagement with said shaft support hub, said drive shaft being movable to cause said shaft support hub to move said anchor shaft longitudinally of said elongate tube in the direction of the closed free end thereof to propel said expandable anchor outwardly from the side opening of said tube. - View Dependent Claims (24)
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25. 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 to an expanded configuration outwardly from said longitudinal axis for contact with said inner side of the wall of the blood vessel, said blood clot filter with anchor delivery system comprising:
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a plurality of elongate spaced legs each having a distal end, a proximal end, and a leg side portion above but adjacent to said distal 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 leg side portions thereof adjacent to the first inner side of a blood vessel in the expanded configuration of the blood clot filter, one or more of said elongate spaced legs having an open proximal end, an internal passage extending from the open proximal end, a closed distal end opposite to said open proximal end. and a side opening to said internal passage formed in said leg side portion above said closed distal end, an elongate anchor shaft mounted for longitudinal movement in the internal passage of said one or more elongate spaced 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 having a first collapsed configuration wherein said anchor within said internal passage is substantially coextensive with said anchor shaft and adjacent to said side opening and a second expanded configuration wherein said anchor expands outwardly from said anchor shaft, and a shaft propulsion unit for engaging the first end of each elongate anchor shaft to move the elongate anchor shafts longitudinally toward the closed distal ends of said one or more elongate legs to propel said expandable anchors out of the side openings of said one or more elongate legs and through the wall of a blood vessel. - View Dependent Claims (26)
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Specification