Devices and methods for fluid distribution from a catheter

Patent metadata

Field	Value
Publication number	US-12564434-B2
Application number	US-202117536911-A
Country	US
Kind code	B2
Filing date	Nov 29, 2021
Priority date	Feb 21, 2018
Publication date	Mar 3, 2026
Grant date	Mar 3, 2026

Abstract

The present disclosure relates generally to the field of medical devices. In particular, the present disclosure relates to devices and methods to convey fluid delivered from a delivery catheter. Exemplary catheters are disclosed which include fluid distribution devices for delivery of fluid and delivery of pass-through medical instruments, such as cryodecompression tubes, within body lumens.

First claim

What is claimed is:

1 . A system comprising:
a device comprising:
a body having a proximal end, a distal end, and a wall having a width extending therebetween along a longitudinal axis of the body, the body defining a cavity portion and an instrument lumen, wherein the cavity portion extends within the body from the proximal end to the distal end, and wherein the instrument lumen extends through the body parallel to the longitudinal axis from an opening at the proximal end of the body to an opening at the distal end of the body, the instrument lumen configured to receive an instrument extending therethrough;
an inlet at the proximal end of the body, the inlet extending into and in fluid communication with the cavity portion, the inlet configured to accept a distal end of a delivery catheter; and
one or more apertures along the wall of the body in fluid communication with the cavity portion, wherein the one or more apertures are configured to spray out a fluid delivered from the delivery catheter into the cavity portion through the inlet;
an expandable member about the device; and a coating extending from a distal end of the expandable member and partially toward a proximal end of the expandable member, the coating configured to substantially block fluids from advancing distally past the coating.

2 . The system of claim 1 , wherein the inlet comprises an elongate surface extending at least partially into the cavity portion.

3 . The system of claim 2 , wherein the elongate surface comprises a step-down portion within the cavity portion, the step-down portion having a diameter that is smaller than a diameter of the remainder of the elongate surface.

4 . The system of claim 1 , wherein the cavity portion is an annulus and the cavity portion extends about and is closed to the instrument lumen.

5 . The system of claim 1 , further comprising a plurality of flow channels within the cavity portion, the flow channels configured to distribute flow from the inlet, through the cavity portion, and out the one or more apertures.

6 . The system of claim 1 , wherein the one or more apertures comprise a frusto-conical shape spanning the width of the wall of the body, and wherein a diameter of the apertures on an interior surface of the wall is larger than a diameter of the apertures on an exterior surface of the wall.

Assignees

• United States Endoscopy Group Inc

Inventors

• Mulcahey Thomas I

Classifications

• A61B2018/0262

  using a circulating cryogenic fluid · CPC title

• A61M2206/20

  having means for promoting or enhancing the flow, actively or passively · CPC title

• A61M2025/091

  having a lumen for drug delivery or suction · CPC title

• A61M25/0662

  Guide tubes · CPC title

• A61M25/0074

  Dynamic characteristics of the catheter tip, e.g. openable, closable, expandable or deformable · CPC title