Introducer sheath
AssigneeCook Critical Care Incorporated
InventorsDarin G. Schaeffer, Bruce Gingles, Jason Urbanski, Daniel J. Sirota, Michael C. Hoffa
Life of this patent
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Abstract
An apparatus and method for inserting an article into a body opening. A radially expandable introducer sheath is delivered in a non-expanded condition into a body opening. A release mechanism releases the introducer sheath from the non-expanded condition into a condition that permits radial expansion of the introducer sheath upon introduction of a medical device through the sheath into the body opening. An optional handle having a circumferential opening may be provided for withdrawing the sheath from the body opening, while leaving the medical device in place.
Claims19
An introducer sheath for use in the percutaneous insertion of an article into a body opening, comprising:
- a sheath body configured to have an axial opening therethrough for passage of said article into said body opening, said sheath body selectively movable between a non-expanded condition and a radially expanded condition, said sheath body comprising a proximal portion and a distal portion, said proximal portion disposed along a proximal length of said sheath body, said distal portion comprising a folded portion when said sheath body is in said non-expanded condition and an extended portion when said sheath body is in said radially expanded condition;
- a hemostatic valve member engaged with said sheath body;
- and
- an insertion member receivable within said sheath body axial opening for holding said folded distal portion of said sheath body in said non-expanded condition, said insertion member extending within said sheath body axial opening at least substantially from said sheath body proximal portion to said sheath body distal portion, said insertion member comprising a cannula having an inner lumen, and said folded distal portion folded within said inner lumen.
An introducer sheath system for use in the percutaneous insertion of an article in a body opening, comprising:
- an introducer sheath comprising a sheath body and an insertion cannula, said sheath body having an axial opening therethrough for passage of said article, said insertion cannula receivable within said axial opening, said sheath body selectively movable between a non-expanded condition and a radially expanded condition, said sheath body having a proximal portion and a distal portion, said insertion cannula extending within said sheath body axial opening from said sheath body proximal portion to said sheath body distal portion, a distal end of said sheath body being foldable within an inner lumen of said insertion cannula when said sheath is in said non-expanded condition, and extendable beyond said insertion cannula to permit radial expansion of said sheath body;
- and
- a dilator engaged with said introducer sheath for dilating the body opening, said dilator having a tapered tip extending distal of said sheath body.
Dependencies are inferred from the claim text.