Patent ID: 7803136
Filing Date: 2010-09-28
Classification: A61B,A61M

Abstract:
1. An intra myocardial injector which comprises: a catheter having a distal end, said catheter being formed with a lumen defining a longitudinal axis; an abutment member having a distal portion and a proximal portion, wherein the abutment member is movable between a first configuration and a second configuration wherein in its first configuration the abutment member is substantially tube-shaped and is positioned within the lumen of the catheter and in its second configuration the proximal portion remains in the lumen of the catheter while the distal portion of the abutment member extends axially beyond the distal end of the catheter and is flared radially outward to establish an annular-shaped barrier at a distal extreme of the abutment member; a pusher rod for axially moving the abutment member between the first configuration and the second configuration; and a needle having a tip, said needle being positioned within the lumen of the catheter for a linear advancement of the needle tip beyond the distal end of the catheter and beyond the barrier provided by the distal portion of the abutment member to penetrate myocardial tissue to perform an injection, when said abutment member is in its second configuration and the annular-shaped barrier abuts the myocardial tissue to prevent contact between said catheter and the myocardial tissue and prevent further distal movement of the catheter during the infection.