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1. (WO2015048795) RADIAL AND TRANS-ENDOCARDIAL DELIVERY CATHETER

Pub. No.:    WO/2015/048795    International Application No.:    PCT/US2014/058439
Publication Date: Fri Apr 03 01:59:59 CEST 2015 International Filing Date: Wed Oct 01 01:59:59 CEST 2014
IPC: A61M 25/00
Applicants: BIOCARDIA, INC.
Inventors: HSUEH, Wai
PALMER, Olin, Jay
COMISO, Scott
ROSS, James, B.
VIEN, Ken
ARGENTIERI, Julio
ALTMAN, Peter
Title: RADIAL AND TRANS-ENDOCARDIAL DELIVERY CATHETER
Abstract:
A needle-injection catheter includes a catheter body having a distal end, a proximal end, a stiff proximal portion, a flexible distal portion, and a delivery lumen extending therethrough. In a first embodiment, a straight injection needle extends coaxially from a distal tip of the flexible portion of the catheter body, and a plurality of penetration limiting elements positioned circumferentially about a base of the straight injection needle and configured to fold radially inwardly against a shaft of the needle when constrained in a tubular lumen and to extend radially outwardly when unconstrained. In a second embodiment, a helical needle extends from the distal tip of the flexible portion of the catheter body. The helical needle has at least one helical delivery lumen connected to receive an injectable substance from the delivery lumen of the catheter body.