Necrosectomy devices and procedures

Patent metadata

Field	Value
Publication number	US-12357332-B2
Application number	US-202217817095-A
Country	US
Kind code	B2
Filing date	Aug 3, 2022
Priority date	Jan 23, 2017
Publication date	Jul 15, 2025
Grant date	Jul 15, 2025

Abstract

The present disclosure relates generally to the field of minimally invasive catheter-based devices and procedures for the removal of necrotic debris. In particular, the present disclosure relates to systems and methods for the removal of necrotic debris from within a walled off necrosis without disrupting or damaging the tissue wall of the necrotic pocket.

First claim

What is claimed is:

1. A system, comprising:
an elongate member, comprising:
a distal end,
a proximal end, and
at least one fluid delivery lumen extending therebetween;

at least one fluid delivery aperture disposed on a distal portion of the elongate member; and
a circumferential recessed portion proximal to the at least one fluid delivery aperture, the circumferential recessed portion defining a planar surface facing the at least one fluid delivery aperture,
wherein the at least one fluid delivery aperture is in fluid communication with the fluid delivery lumen, and
wherein the at least one fluid delivery aperture and the circumferential recessed portion are configured to deliver fluid in the form of fluid spray directed proximally over an outer surface of the elongate member.

2. The system of claim 1 , wherein the at least one fluid delivery aperture includes at least one fluid delivery aperture disposed on the distal end of the elongate member.

3. The system of claim 1 , wherein the at least one fluid delivery aperture includes a plurality of rear-facing fluid delivery apertures radially disposed about a circumference of the distal portion of the elongate member.

4. The system of claim 1 , wherein the distal end of the elongate member comprises an atraumatic tip.

5. The system of claim 1 , wherein the at least one fluid delivery aperture comprises a plurality of fluid delivery apertures.

6. The system of claim 5 , wherein the plurality of fluid delivery apertures are disposed about a circumference of the distal portion of the elongate member.

7. The system of claim 6 , wherein the plurality of fluid delivery apertures are evenly spaced apart from each other.

8. The system of claim 1 , wherein the at least one fluid delivery aperture is positioned substantially 70 degrees, substantially 80 degrees, substantially 90 degrees, substantially 100 degrees, or substantially 110 degrees relative to a longitudinal axis of the elongate member.

9. A drainage catheter system, comprising:
an elongate member having a distal end, a proximal end, and at least one fluid delivery lumen extending therebetween;
a plurality of rear-facing fluid delivery apertures radially disposed about a circumference of the distal end of the elongate member; and
a circumferential recessed portion proximal to the plurality of rear-facing fluid delivery apertures, the circumferential recessed portion defining a planar surface facing the plurality of rear-facing fluid delivery apertures,
wherein at least one of the rear-facing fluid delivery apertures is in fluid communication with the fluid delivery lumen, and
wherein the plurality of rear-facing fluid delivery apertures and the circumferential recessed portion are configured to deliver fluid in the form of fluid spray directed proximally over an outer surface of the elongate member.

10. The drainage catheter system of claim 9 wherein the planar surface is positioned such that a fluid flowing through the rear-facing fluid delivery apertures impacts the planar surface.

11. The drainage catheter system of claim 9 , wherein the fluid delivery lumen and the rear-facing fluid delivery apertures are configured to deliver the fluid spray as a high-pressure jet.

12. The drainage catheter system of claim 11 , wherein a diameter of the fluid delivery lumen is varied to adjust the velocity of the high-pressure jet.

13. The system of claim 9 , wherein the distal end of the elongate member comprises an atraumatic tip.

14. The system of claim 9 , wherein the plurality of rear-facing fluid delivery apertures are evenly spaced apart from each other.

15. The system of claim 9 , wherein the fluid spray is directed substantially parallel to a longitudinal axis of the elongate member.

16. The system of claim 9 , wherein the at least one fluid delivery aperture is positioned substantially 70 degrees, substantially 80 degrees, substantially 90 degrees, substantially 100 degrees, or substantially 110 degrees relative to a longitudinal axis of the elongate member.

17. A system, comprising:
a fluid source configured to deliver pressurized fluid; and
an elongate member, comprising:
a distal end,
a proximal end configured to be fluidly connected to the fluid source, and
at least one fluid delivery lumen extending therebetween;

at least one fluid delivery aperture disposed on a distal portion of the elongate member; and
a circumferential recessed portion distal to the at least one fluid delivery aperture, the circumferential recessed portion defining a planar surface facing the at least one fluid delivery aperture,
wherein the at least one fluid delivery aperture is in fluid communication with the fluid delivery lumen, and
wherein the at least one fluid delivery aperture and the circumferential recessed portion are configured to deliver the pressurized fluid from the fluid source in the form of fluid spray directed proximally over an outer surface of the elongate member.

18. The system of claim 17 , wherein the at least one fluid delivery aperture is positioned substantially 70 degrees, substantially 80 degrees, substantially 90 degrees, substantially 100 degrees, or substantially 110 degrees relative to a longitudinal axis of the elongate member.

Assignees

• Boston Scient Scimed Inc

Inventors

• Weitzner Barry
• Hartman Ryan
• Dayton Peter L
• Golden John B

Classifications

• A61M1/84

  Drainage tubes; Aspiration tips (for negative pressure wound therapy A61M1/90; for surgical cutting instruments A61B17/32) · CPC title

• A61B17/3203 Primary

  Fluid jet cutting instruments · CPC title

• A61B17/320725

  with radially expandable cutting or abrading elements (A61B17/32075 takes precedence) · CPC title

• A61B17/320758

  with a rotating cutting instrument, e.g. motor driven (A61B17/320725, A61B17/32075 and A61B17/320783 take precedence; for removing intra-ocular material A61F9/00763; endoscopic rotatable cutting instruments A61B17/32002) · CPC title

• A61B2017/22061

  for spreading elements apart · CPC title