Patent ID: 6309375
Filing Date: 2001-10-30
Classification: A61B,A61M

Abstract:
Apparatus for delivery of a drug solution to a target site within a subject by needle injection, comprising(a) a delivery device having (i) a housing, (ii) a fluid reservoir, (iii) a carriage assembly mounted in said housing for movement between retracted and extended conditions, and (iv) an actuator assembly operatively connected to said carriage and said reservoir, to cause movement of said carriage from its retracted toward its extended position, and cause flow of fluid from said reservoir, as said actuator is moved from open to closed positions, and(b) an appliance maneuverable within a subject to such target site, said appliance having an elongate hollow body probe defining a length having proximal and distal ends, and an inner lumen extending therebetween, an extension member extending substantially said length of said probe from said proximal probe end to said distal probe end, and a needle carried at said distal probe end of said extension member,wherein said extension member is operatively connected to said carriage, and said needle is in fluid communication with said reservoir, such that (i) movement of said carriage assembly from its retracted to its extended position is transmitted through said extension member to said needle at said distal probe end, causing said needle to move from a retracted position to an injection position into said target site, and (ii) fluid contained in said reservoir is forced from said reservoir through said needle and delivered into said target site.