US 5,713,860 A · Intravascular catheter with infusion array

Abstract

An intravascular catheter provides means for infusing an agent into a treatment site in a body lumen and means for deploying the infusing means adjacent the treatment site which operate independently of one another. In a first embodiment, a flexible catheter body has an expansion member attached to its distal end in communication with an inflation passage, and an infusion array disposed about the expansion member in communication with one or more delivery passages. In a second embodiment, the infusion array is a separate component and slidably received over the expansion member, which may be a balloon dilatation catheter. In both embodiments, the infusion array includes a plurality of delivery conduits having laterally oriented orifices. The delivery conduits may be extended radially from the catheter body to contact a treatment site by expanding the expansion member with an inflation fluid. An agent may be introduced into the delivery passages and infused into the treatment site through orifices in the delivery conduits. The expansion member may be expanded for dilatation of the lumen before, during, or after infusion.

Claims47

Dependent claims

Apparatus for infusing an agent to a treatment site on a wall of a body lumen, the apparatus comprising:

a flexible shaft having a distal end, a proximal end and first and second passages therebetween;
an expansion member disposed at the distal end of the shaft, the interior of the expansion member being in fluid communication with the first passage;
at least one laterally-deflectable delivery conduit secured at the distal end of the shaft adjacent the expansion member, the delivery conduit having a plurality of orifices on a lateral surface thereof and an axial lumen connecting the orifices to the second passage in the shaft;
and
an axially rigid stiffening element disposed axially in the delivery conduit.

2 more elements

Apparatus for infusing an agent to a treatment site on the wall of a body lumen, the apparatus comprising:

a flexible shaft having a distal end and a proximal end, with a guide passage and a plurality of fluidly independent delivery passages extending axially through the shaft, the guide passage being open at the distal end;
an inflation tube slidably disposed in the guide passage having a distal end, a proximal end, an axial inflation lumen therebetween, and an expansion member attached to the distal end in communication with the inflation lumen, wherein the expansion member may be advanced distally from the distal end of the shaft;
and
a plurality of laterally-deflectable delivery conduits attached to the distal end of the shaft generally parallel thereto, each delivery conduit having an axial lumen in communication with at least one of the delivery passages and a plurality of orifices on a lateral surface thereof, wherein the expansion member is axially positionable adjacent to the delivery conduits for laterally positioning the delivery conduits in apposition to the treatment site;
and, wherein at least a first of the delivery conduits is in communication with a different delivery passage than at least a second of the delivery conduits so as to allow independent delivery of agents to the first and second delivery conduits;
and
means for maintaining relative alignment of the delivery conduits during lateral deflection thereof, wherein said means biases the delivery conduits to an undeflected configuration.

4 more elements

Dependencies are inferred from the claim text.

Intravascular catheter with infusion array

Life of this patent

Intravascular catheter with infusion array

Life of this patent

Abstract

Claims47