US 7,320,695 B2 | ||
Safe septal needle and method for its use | ||
Sean M. Carroll, Rancho Cucamonga, Calif. (US) | ||
Assigned to Biosense Webster, Inc., Diamond Bar, Calif. (US) | ||
Filed on Dec. 31, 2003, as Appl. No. 10/750,097. | ||
Prior Publication US 2005/0149062 A1, Jul. 07, 2005 | ||
Int. Cl. A61B 17/34 (2006.01) |
U.S. Cl. 606—185 | 11 Claims |
1. A method for puncturing a proximal membrane without puncturing a distal membrane comprising:
distally advancing an elongated body through a first elongated tubular member to a first position where a distal end of the
elongated body is in a first configuration outside a distal end of the first elongated tubular member, the elongated body
having a distal tip that is sufficiently rigid and sharp to puncture the proximal membrane;
puncturing the proximal membrane with the distal tip of the elongated body; and
advancing the elongated body distally through the punctured proximal membrane whereby the distal tip of the elongated body
has shape memory and automatically moves into a second configuration having a blunt distal surface facing the distal membrane.
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