Patent ID: 9254360
Filing Date: 2016-02-09
CPC Classification: A61B,A61M

Claim Text:
1. A catheter for fluid delivery through at least two distal injection needles into tissue outside of a luminal surface which is an interior wall of a target vessel of a human body, the catheter including: a catheter body having a central axis extending in a longitudinal direction and a fluid injection lumen; at least two guide tubes configured to advance distally and expand outwardly toward the luminal surface of the target vessel; a mechanical support structure including at least two deflection surfaces, the at least two deflection surfaces radially spaced around a circumference, a first deflection surface of the at least two deflection surfaces deflecting a first guide tube of the at least two guide tubes toward the luminal surface of the target vessel; and at least two injector tubes, each of the at least two injector tubes having a distal injection needle, each distal injection needle having an injection lumen in fluid communication with the fluid injection lumen of the catheter body, the at least two injector tubes configured to advance distally and expand outwardly, guided by the at least two guide tubes to penetrate the luminal surface of the target vessel, each distal injection needle having an opening for fluid delivery.