Back to results
US 2016/0249902 A1Published application
System and method for delivering expanding trocar through a sheath
AssigneeXLumena, Inc.
InventorsJohn Lunsford, Fiona Sander, Hoang Phan
Life of this patent
Estimating the term…
Abstract
A trocar has an elongate body and a tissue-penetrating tip. One or more radially extending blade(s) are provided near the tissue-penetrating tip of the trocar body so that they automatically open as the trocar is advanced through tissue. The blades will enlarge the penetration which was formed by the tip of the trocar.
Claims28
A trocar for use with a delivery sheath having a lumen, said trocar comprising:
- an elongate body which can be advanced through the sheath lumen;
- and
- at least one blade disposed near a distal end of the elongate body, said blade being biased to open from a radially retracted configuration to a radially extended configuration, wherein the blade is radially retracted when the distal end of the elongate body is within the sheath lumen and said blade opens radially when the distal end is advanced distally beyond the sheath lumen.
A method for accessing an internal body organ, said method comprising:
- introducing a delivery sheath to a location adjacent to a wall of the organ;
- and
- advancing a trocar from a lumen in the delivery sheath, wherein the trocar penetrates the wall of the organ;
- wherein advancing the trocar releases a blade from constraint within the delivery sheath lumen so that the blade opens radially as the trocar exits the lumen such that the blade enlarges the penetration made by the distal tip of the trocar.
1 more element
Dependencies are inferred from the claim text.