JP-2026514237-A - Fluid mixing apparatus and method

Abstract

The medical device may comprise a first inlet for receiving a first fluid, a second inlet for receiving a second fluid, and a composite including a first body defining a first lumen and a second body disposed within the first lumen. The first lumen may be fluid-communicated with the first inlet so that the first lumen receives the first fluid from the first inlet. The second body may define a second lumen. The second lumen may be fluid-communicated with the second inlet so that the second lumen receives the second fluid from the second inlet. The radial outer surface of the second body may have a plurality of openings so that the first lumen and the second lumen are fluid-communicated through a plurality of openings.

Inventors

• ヤティム、マゼン
• ゴシェン、サミュエル
• バグリー、ケビン エル．

Assignees

• ボストン サイエンティフィック サイムド，インコーポレイテッド

Dates

Publication Date

20260507

Application Date

20240430

Priority Date

20230504

Claims (15)

1. It is a medical device, A first inlet for receiving the first fluid, A second inlet for receiving the second fluid, It is a complex, A first body defining a first lumen, wherein the first lumen is in fluid communication with the first inlet such that the first lumen receives the first fluid from the first inlet, A second body disposed within the first lumen and defining a second lumen, wherein the second lumen is in fluid communication with the second inlet so as to receive the second fluid from the second inlet, and the radial outer surface of the second body has the plurality of openings so as to allow the first lumen and the second lumen to be in fluid communication through the plurality of openings, The composite comprising, A medical device equipped with the following features.
2. The medical device according to claim 1, wherein the first main body is tubular.
3. The medical device according to claim 1 or 2, wherein the second main body is tubular.
4. The medical device according to any one of claims 1 to 3, wherein the first body and the second body are formed monolithically from a single piece of material.
5. The medical device according to any one of claims 1 to 4, wherein the first lumen is coaxial with the second lumen.
6. The medical device according to any one of claims 1 to 5, wherein the composite has a size that can be received within the working channel of the scope.
7. The medical device according to any one of claims 1 to 6, wherein the first fluid is a liquid and the second fluid is a gas.
8. The medical device according to any one of claims 1 to 7, wherein the composite is configured such that the second fluid flows into the first lumen through the plurality of openings, thereby forming a mixture of the first fluid and the second fluid within the first lumen.
9. The medical device according to claim 8, further comprising an outlet configured to receive a mixture of the first fluid and the second fluid from the first lumen.
10. The medical device according to any one of claims 1 to 6, wherein the first fluid is a gas and the second fluid is a liquid.
11. The outer sheath defining the first entrance, An inner sheath located at least partially within the outer sheath and defining the second entrance, A medical device according to any one of claims 1 to 6, 10, further comprising:
12. The medical device according to claim 11, wherein the radial outer wall of the outer sheath includes a side opening, and the inner sheath is configured to receive the second fluid through the side opening.
13. The medical device according to claim 11 or 12, wherein the proximal end of the first body is connected to the distal end of the outer sheath, and the proximal end of the second body is connected to the distal end of the inner sheath.
14. The medical device according to any one of claims 1 to 6, 11 to 13, wherein the composite is configured such that the first fluid flows into the second lumen through the plurality of openings, thereby forming a mixture of the first fluid and the second fluid within the second lumen.
15. The medical device according to any one of claims 1 to 14, wherein the composite is configured such that a gas passes through the plurality of openings to form a mixture of gas and liquid.

Description

This disclosure relates, in general, to fluid mixing devices and methods. Specifically, aspects of this disclosure relate to medical devices and/or methods for mixing liquids and fluids, thereby facilitating the delivery of a fluid to a target site within the anatomical structure of a subject by aerating the liquid. This application claims priority to U.S. Provisional Patent Application No. 63/500,008, filed 4 May 2023, which is incorporated herein by reference in its entirety. In medical procedures, fluids such as liquids may be delivered to a site within the anatomical structure of the subject (e.g., the treatment site). For example, endoscopic procedures may be performed within the body lumen of the subject. Such procedures include endoscopic submucosal dissection (ESD) and endoscopic mucosal resection (EMR), which may be used to remove lesions (e.g., polyps) from the body lumen of the subject (e.g., the colon). Perforation or other sources of bleeding may occur as complications of such procedures. Bleeding may occur during the procedure or with a delay. Low-viscosity agents may be used prophylactically or hemostatically. Some low-viscosity fluids may migrate from the site during delivery due to their low viscosity. High-viscosity agents present transport challenges due to the amount of force required to deliver high-viscosity liquids. Therefore, there is a need to deliver the drug to a target site within the anatomical structure of the subject. This disclosure relates to fluid mixing apparatus and methods of using the same, including, for example, apparatus and methods for promoting fluid flow by mixing a high-viscosity fluid with air, carbon dioxide, or other fluids. Each embodiment disclosed herein may include one or more features described in relation to any of the other disclosed embodiments. In some embodiments, a medical device may comprise a first inlet for receiving a first fluid, a second inlet for receiving a second fluid, and a mixture. The mixture includes a first body defining a first lumen and a second body positioned within the first lumen. The first lumen may be fluid-communicated with the first inlet so that it receives the first fluid from the first inlet. The second body may define a second lumen. The second lumen may be fluid-communicated with the second inlet so that it receives the second fluid from the second inlet. The radially outer surface of the second body may have a plurality of openings so that the first and second lumens are fluid-communicated through the plurality of openings. Any of the multiple embodiments disclosed herein may include any combination of the following features: The first body may be tubular. The second body may be tubular. The first and second bodies may be monolithically formed from a single piece of material. The first lumen may be coaxial with the second lumen. The composite may have a size that is accommodated within the working channel of the scope. The first fluid may be a liquid and the second fluid may be a gas. The composite may be configured to form a mixture of the first and second fluids within the first lumen by the second fluid flowing into the first lumen through the multiple openings. The medical device may further include an outlet configured to receive the mixture of the first and second fluids from the first lumen. The first fluid may be a gas and the second fluid may be a liquid. The medical device may further comprise an outer sheath defining a first inlet and an inner sheath at least partially located within the outer sheath and defining a second inlet. The radial outer wall of the outer sheath may include side openings. The inner sheath may be configured to receive the second fluid through the side openings. The proximal end of the first body may be coupled to the distal end of the outer sheath. The proximal end of the second body may be coupled to the distal end of the inner sheath. The composite may be configured to form a mixture of the first and second fluids in the second lumen by the first fluid flowing into the second lumen through the plurality of openings. The composite may be configured to form a mixture of gas and liquid by gas passing through the plurality of openings. In another embodiment, the medical device may comprise a first body defining a first lumen and a second body positioned within the first lumen. The second body may define a second lumen. The radial outer surface of the second body may have a plurality of openings such that the first lumen and the second lumen are in fluid communication through the openings. The medical device may be configured such that, in order to form a mixture of gas and liquid, gas flows through the plurality of openings (a) from the first lumen into the second lumen, or (b) from the second lumen into the first lumen. Any of the multiple embodiments disclosed herein may have any combination of the following features: The first lumen may be coaxial with the second lumen. The first bod