Agent delivery devices and related methods

Inventors: Paul Smith (Smithfield, RI); Gerald Fredrickson (Westford, MA); Lauren Lydecker (Millbury, MA); Narunn Suon (Lawrence, MA)

Assignee: Boston Scientific Scimed, Inc.

A61M5/31596 A61M5/19 A61M5/31515

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Quick Facts

Patent No.: US 12661454
App. No.: 17/466,166
Granted: Jun 23, 2026
Kind: B2

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Abstract

An agent delivery device comprises: one or more agent containers at a proximal end of the agent delivery device, wherein the one or more agent containers are configured to contain one or more fluids; an insertion section comprising a tube defining one or more lumens, the insertion section coupled to the agent containers such that the one or more fluids may flow from the agent containers to the one or more lumens and out of one or more outlets of the one or more lumens; and a distal impingement structure at the distal end of the insertion section, the distal impingement structure comprising an impingement surface arranged relative to one or more outlets to impinge the one or more fluids dispensed from the one or more outlets to cause mixing of the one or more fluids for application of the fluids at a treatment site.

Claims (29)

1 . An agent delivery device, comprising:

one or more agent containers at a proximal end of the agent delivery device, wherein each agent container of the one or more agent containers is configured to contain a fluid;

an insertion section connected to a distal end of the one or more agent containers, the insertion section comprising a flexible tube defining one or more lumens, the tube being configured to be inserted into a gastrointestinal tract of a subject with the proximal end of the agent delivery device remaining outside of the gastrointestinal tract, the insertion section coupled to the one or more agent containers such that the fluid of the one or more agent containers is able to flow from the one or more agent containers to the one or more lumens and out of one or more outlets of the one or more lumens; and

a distal impingement structure at the distal end of the insertion section, the distal impingement structure comprising an impingement surface and a bottom surface connecting the distal end of the tube to the impingement surface, wherein the impingement surface is arranged distal to the one or more outlets to impinge the fluid of the one or more agent containers dispensed from the one or more outlets to cause mixing of the fluid of the one or more agent containers for application of the fluid of the one or more agent containers at a treatment site,

wherein the bottom surface comprises one or more cylindrical rods extending in a direction substantially parallel to a longitudinal axis of the one or more lumens, and

wherein the one or more fluids dispensed out of the one or more outlets moves through a space extending from the one or more outlets to the impingement surface, wherein the space is radially enclosed by only the bottom surface.

2 . The agent delivery device of claim 1 , wherein the impingement surface and a longitudinal axis of each of the one or more lumens form an angle between 45 degrees and 160 degrees.

3 . The agent delivery device of claim 2 , wherein the distal impingement structure comprises:

a top surface extending distally from the impingement surface, wherein the top surface is substantially parallel to the bottom surface; and

a distally-facing surface extending from the top surface and substantially parallel to the impingement surface.

4 . The agent delivery device of claim 3 , wherein the fluid of the one or more agent containers dispensed from the one or more outlets form a fluid flow over the impingement surface and the top surface.

5 . The agent delivery device of claim 2 , further comprising a distally-facing surface extending from an edge of the impingement surface opposite from the bottom surface, wherein the distally-facing surface is substantially perpendicular to a plane of the bottom surface.

6 . The agent delivery device of claim 1 , wherein the one or more lumens comprise two lumens each extending distally from a distal face of the tube.

7 . The agent delivery device of claim 6 , wherein longitudinal axes of the two lumens intersect in a manner that causes mixing of the fluid of the one or more agent containers dispensed from the outlets prior to the fluid of the one or more agent containers contacting the impingement surface.

8 . The agent delivery device of claim 1 , further comprising an additional lumen within the tube and configured to deliver a compressed gas proximate the one or more outlets of the one or more lumens.

9 . The agent delivery device of claim 1 , wherein the one or more outlets are distalmost openings through which the one or more fluids are able to flow.

10 . The agent delivery device of claim 1 , wherein the distal end is at a distalmost end of the agent delivery device.

11 . The agent delivery device of claim 1 , wherein the one or more outlets are separated from the bottom surface by an outlet height.

12 . An agent delivery device, comprising:

one or more agent containers at a proximal end of the agent delivery device, wherein the one or more agent containers contain one or more fluids;

a flexible insertion tube connected to a distal end of the one or more agent containers and configured to be inserted into a gastrointestinal tract of a subject, the insertion tube defining at least one delivery lumen and a second lumen, the insertion tube coupled to the agent containers such that the one or more fluids are able to flow from the agent containers to the at least one delivery lumen and out of one or more outlets of the at least one delivery lumen; and

a first impingement wire, wherein a proximal end of the first impingement wire is mounted in a distal end of the second lumen, the first impingement wire having an impingement surface at an end of the first impingement wire, the impingement surface positioned distally of the at least one delivery lumen to impinge the one or more fluids dispensed from the one or more outlets.

13 . The agent delivery device of claim 12 , wherein the impingement surface is transverse to a longitudinal axis of the at least one delivery lumen.

14 . The agent delivery device of claim 12 , further comprising a second impingement wire, wherein the proximal end of the second impingement wire is mounted in a distal end of a third lumen, wherein the second impingement wire includes a second impingement surface on an end of the second impingement wire.

15 . An agent delivery device, comprising:

one or more agent containers at a proximal end of the agent delivery device, wherein each agent container of the one or more agent containers is configured to contain a fluid;