Patent ID: 11918768
Assignee: ENCOMPASS VASCULAR, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 4:
5. An intravascular apparatus, comprising:
an inflatable balloon having an inflated cylindrical configuration;
an expandable infusion scaffold comprising at least first and second expandable infusion spines, each of the at least first and second infusion spines defining a lumen therein and each including two or more spaced apart radial openings therethrough,
wherein the expandable infusion scaffold is adapted and positioned about the inflatable balloon such that inflation of the balloon causes the scaffold to radially expand, the at least first and second infusion spines extending about an outer cylindrical surface of the inflatable balloon when the inflatable balloon is in an inflated state;

a plurality of movable needles assemblies, each one of the plurality of movable assemblies disposed in one of the at least first and second expandable infusion spines and movable within and relative to the infusion spine, each of the plurality of movable assemblies comprising
a rail that includes a rail lumen, a plurality of needles, and one or more fluid delivery lumens within the rail lumen that are in fluid communication with the plurality of needles,
wherein the plurality of needles are coupled to the rail such that movement of the rail within the corresponding infusion spine moves the plurality of the needles as a group relative to the infusion spine between undeployed configurations in which each of the plurality of needles are housed within the infusion spine and deployed configurations in which each of the plurality of needles extends generally radially out of one of the radial openings in the infusion spine for delivery of an agent into a wall of a target vessel; and

at least one spine securing member that is disposed radially outside of at least a portion of the at least first and second spines in a location where the at least first and second spines extend about the outer cylindrical surface of the inflatable balloon,
wherein the at least one spine securing member comprises a sleeve that is disposed radially outside of at least a portion of a radially outermost surface of the at least first and second spines, wherein the sleeve is bonded to the inflatable balloon along a radially inner portion of the sleeve, and wherein at least a portion of one of the spines is disposed within the sleeve.