Medical devices for endoscopically dispensing agents and related methods of use

Patent metadata

Field	Value
Publication number	US-11986175-B2
Application number	US-202017095276-A
Country	US
Kind code	B2
Filing date	Nov 11, 2020
Priority date	Nov 18, 2019
Publication date	May 21, 2024
Grant date	May 21, 2024

Abstract

A medical system includes a propellant source containing a propellant fluid, containers containing a material, and a shaft having a plurality of lumens, each of the plurality of lumens having a first opening at a proximal end of the shaft and a second opening at a distal end of the shaft. The plurality of lumens are fluidly coupled to one or more of the propellant source and at least one of the plurality of containers, and a first lumen surrounds, is coaxial with, or is side-by-side with, at least one other lumen.

First claim

What is claimed is:

1. A medical system, comprising:
a propellant source configured to contain a propellant fluid;
a plurality of containers each configured to contain a material; and
a shaft comprising:
a plurality of lumens, each of the plurality of lumens having a first opening at a proximal end of the shaft and a second opening at a distal end of the shaft, the plurality of lumens are fluidly coupled to one or more of the propellant source and at least one of the plurality of containers, and
a tip at a distalmost end of the shaft, the tip comprising:
a distal delivery opening,
a passage connecting at least one of the plurality of lumens of the shaft to the distal delivery opening, and
an auger extending to the distal delivery opening, rotatably disposed in the passage, and configured to move material within the passage toward the distal delivery opening, wherein the auger is configured to mix contents within the shaft; and

wherein a first lumen of the plurality of lumens surrounds, is coaxial with, or is side-by-side with, at least one other lumen from the plurality of lumens.

2. The medical system according to claim 1 , wherein the propellant source is fluidly coupled to each of the plurality of containers and to the first lumen.

3. The medical system according to claim 1 , wherein the material in a first container of the plurality of containers is a first agent, and
wherein the material in a second container of the plurality of containers is a second agent, different from the first agent.

4. The medical system according to claim 3 , wherein the propellant fluid is a gas configured to mix with the first agent in the first container and mix with the second agent in the second container, and wherein the gas is configured to transmit each of the first agent and the second agent through a respective lumen of the plurality of lumens.

5. The medical system according to claim 4 , wherein the gas from the first lumen is configured to atomize the mixture.

6. The medical system according to claim 1 , wherein at least one of the plurality of containers is a syringe, wherein the syringe includes:
a barrel with an inlet at a proximal end of the barrel, an outlet at a distal end of the barrel, and a chamber between the inlet and the outlet; and
a piston configured to be inserted into the inlet and to move relative to the barrel,
wherein material within the chamber is configured to be expelled from the outlet by moving the piston toward the outlet.

7. The medical system according to claim 1 , wherein each lumen of the plurality of lumens is fluidly isolated from the other lumens of the plurality of lumens from the first opening of each lumen to the second opening of each lumen.

8. The medical system according to claim 1 , wherein the propellant source is fluidly coupled directly to the first lumen, wherein an inlet of each of the plurality of containers is fluidly coupled to the propellant source and an outlet of each of the plurality of containers is fluidly coupled to a respective lumen of the plurality of lumens at the proximal end of the shaft.

9. The medical system according to claim 1 , wherein the plurality of lumens fluidly coupled to the plurality of containers share a common wall, and wherein the first lumen surrounds the plurality of lumens fluidly coupled to the plurality of containers.

10. The medical system of claim 9 , wherein the plurality of lumens includes a second lumen and a third lumen, wherein the common wall is positioned between the second lumen and the third lumen so that a cross section of each of the second lumen and the third lumen has a semi-circle shape.

11. The medical system of claim 10 , wherein a combined perimeter of the second lumen and the third lumen forms a first circle, wherein a perimeter of the first lumen forms a second circle concentric with the first circle.

12. The medical system according to claim 1 , further comprising an actuator coupled to an outlet of the propellant source, the first lumen, and each of the plurality of containers, wherein the actuator is configured to control a release of the propellant fluid from the propellant source.

13. The medical system according to claim 12 , wherein the actuator is configured to individually control the release of propellant fluid to each of the first lumen and a first container and a second container of the plurality of containers, and wherein the propellant fluid is configured to aerosolize a mixture of a first material and a second material at the distal end of the shaft.

14. The medical system of claim 1 , wherein the auger includes a helical thread, the helical thread including a pitch and a diameter, wherein the tip includes a tapered portion tapering towards the distalmost end of the shaft, and the auger includes a tapered portion at a distal end of the auger, wherein the tapered portion of the auger is positioned within the tapered portion of the tip.

15. The medical system of claim 14 , wherein the diameter of the helical thread decreases along the tapered portion of the auger towards the distalmost end of the shaft, wherein a pitch of the helical thread at the tapered portion of the auger is less than a pitch of the helical thread along a proximal portion of the auger.

16. A medical system, comprising:
a propellant source configured to contain a propellant fluid;
a plurality of containers each configured to contain a material; and
a shaft comprising:
a tip at a distalmost end of the shaft, the tip including an auger therein for mixing contents within the shaft,
a plurality of lumens, each of the plurality of lumens having a first opening at a proximal end of the shaft and a second opening at a distal end of the shaft,

wherein the plurality of lumens includes a first lumen fluidly coupled to the propellant source, a second lumen coupled to a first container of the plurality of containers, and a third lumen coupled to a second container of the plurality of containers,
wherein the second lumen and the third lumen share a common wall so that a cross section of each of the second lumen and the third lumen has a semi-circle shape, and the first lumen surrounds the second lumen and the third lumen,
wherein the auger includes a helical thread, the helical thread including a pitch and a diameter, wherein the tip includes a tapered portion, and the auger includes a tapered portion at a distal end of the auger, wherein the tapered portion of the auger is positioned within the tapered portion of the tip so as to extend to a distal delivery opening of the tip.

17. The medical system of claim 16 , wherein the diameter of the helical thread decreases along the tapered portion of the auger towards the distalmost end of the shaft, wherein a pitch of the helical thread at the tapered portion of the auger is less than a pitch of the helical thread along a proximal portion of the auger.

18. The medical system of claim 17 , wherein the first lumen is annular.

Assignees

• Boston Scient Scimed Inc

Inventors

• Fredrickson Gerald
• Whelehan Jennifer
• Laplaca Matthew
• Lydecker Lauren

Classifications

• A61B17/00491 Primary

  Surgical glue applicators · CPC title

• A61M5/3129

  Syringe barrels (A61M5/3205 and A61M5/50 take precedence) · CPC title

• A61M5/315

  Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod {or piston}; Appliances on the rod for facilitating dosing {; Dosing mechanisms} · CPC title

• A61M25/0026

  Multi-lumen catheters with stationary elements (catheter assemblies comprising a catheter in combination with a guide tube, sheath or sleeve A61M2025/0681; catheters comprising telescoping coaxial elements A61M2025/0175) · CPC title

• A61M25/0068

  Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure · CPC title