Apparatus and method for biological tissue puncture expansion
AssigneeBoston Scientific Medical Device Limited
InventorsChristian Balkovec, Linus Hoi Che Leung
Life of this patent
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Abstract
A method and apparatus are disclosed for an elongated introducer assembly. The elongated introducer assembly is manipulated and positioned proximate to a puncture hole in a tissue wall. A distal tip and distal end are advanced through the puncture hole and a distal expansion portion is selectively positioned relative to the puncture hole. An outer sliding shaft is advanced relative to an inner shaft, causing radial expansion of the distal expansion portion and an increase in outer diameter of the elongated introducer assembly at the distal expansion portion. Expansion of the puncture hole occurs as a result of the distal expansion portion in an expanded configuration passing through or spanning the puncture hole.
Claims20
An apparatus for expanding patient tissue, the apparatus comprising:
- an elongated introducer assembly configured to be maneuvered toward and positioned proximate to a puncture hole of a tissue wall;
- the elongated introducer assembly including a distal end, an inner shaft, and an outer sliding shaft;
- the outer sliding shaft being concentrically situated and longitudinally movable relative to the inner shaft;
- and
- a distal expansion portion contiguous with the outer sliding shaft, the distal expansion portion comprised of a pre-defined sloping geometry on the inner shaft and one or more split distal outer shaft segments on the outer sliding shaft;
- wherein selective linear movement of the outer sliding shaft relative to the inner shaft forces the distal expansion portion against the distal end and actuates radial expansion of the distal expansion portion.
An apparatus for expanding patient tissue, the apparatus comprising:
- an elongated introducer assembly configured to be maneuvered toward and positioned proximate to a puncture hole of a tissue wall;
- the elongated introducer assembly having a length and including a distal end, an inner shaft, and an outer sliding shaft;
- the outer sliding shaft being concentrically situated and longitudinally movable relative to the inner shaft;
- and
- a distal expansion portion contiguous with the outer sliding shaft;
- wherein the elongated introducer assembly includes indicators along the length corresponding to an outer diameter of the distal expansion portion concomitant with the position of the outer sliding shaft relative to the inner shaft;
- and
- wherein selective linear movement of the outer sliding shaft relative to the inner shaft forces the distal expansion portion against the distal end and actuates radial expansion of the distal expansion portion.
Dependencies are inferred from the claim text.