Abdominal treatment systems, delivery devices, and methods

Patent metadata

Field	Value
Publication number	US-2020338246-A1
Application number	US-202016924657-A
Country	US
Kind code	A1
Filing date	Jul 9, 2020
Priority date	Mar 11, 2010
Publication date	Oct 29, 2020
Grant date	—

Abstract

A reduced-pressure abdominal treatment device is presented that has a plurality of liquid-impermeable layers with a foam spacer between two of the liquid-impermeable layers. The plurality of liquid-impermeable layers have a coextensive area A1. The foam spacer has a plan-view area A2. A2 is less than 80% of A1 (i.e., A2<0.8A1). The foam spacer is configured such that, under reduced pressure, a target fluid removal zone experiences reduced-pressure vectors over an angle theta (θ) that is typically 360 degrees for a majority of locations in the target fluid removal zone. Applying 360 degrees of reduced pressure helps avoid blockage. The plurality of liquid-impermeable layers may be bonded for various effects. Other devices, systems, and methods are disclosed.

First claim

1 . An abdominal treatment device for distributing reduced pressure to a tissue site, the abdominal treatment device comprising:
a plurality of liquid-impermeable layers, wherein the liquid-impermeable layers are at least partially fenestrated; a micro-channel space between the liquid-impermeable layers; a foam spacer disposed between at least two layers of the liquid-impermeable layers, wherein the foam spacer comprises mirrored c-shaped members having an outer peripheral edge and a target flow zone inboard of the outer peripheral edge; and spacer bonds coupling at least two of the liquid-impermeable layers and disposed along the outer peripheral edge of the c-shaped members; and wherein the micro-channel space in the target flow zone is adapted to experience reduced-pressure vectors over an angle that is at least 270 degrees.

2 . The abdominal treatment device of claim 1 , wherein the mirrored c-shape members are interconnected.

3 . The abdominal treatment device of claim 1 , wherein the spacer bonds comprise a stitch bond.

4 . The abdominal treatment device of claim 1 , wherein the spacer bonds comprise a solid bond.

5 . The abdominal treatment device of claim 1 , wherein each of the liquid-impermeable layers has a thickness in the range of 50 to 120 microns.

6 . The abdominal treatment device of claim 1 , wherein:
the mirrored c-shape members are interconnected; the spacer bonds comprise a solid bond; and each of the liquid-impermeable layers has a thickness in the range of 50 to 120 microns.

7 . An abdominal treatment device for distributing reduced pressure to a tissue site, the abdominal treatment device comprising:
a plurality of liquid-impermeable layers, wherein the liquid-impermeable layers are at least partially fenestrated; a micro-channel space between the liquid-impermeable layers; a foam spacer disposed between at least two layers of the liquid-impermeable layers, wherein the foam spacer comprises a plurality of annular circles having an outer peripheral edge and a target flow zone inboard of the outer peripheral edge; and spacer bonds coupling at least two of the liquid-impermeable layers and disposed along the outer peripheral edge of the foam spacer; and wherein the foam spacer is configured such that the micro-channel space in the target flow zone experiences reduced-pressure vectors over an angle that is at least 270 degrees under reduced pressure.

8 . The abdominal treatment device of claim 7 , wherein the annular circles are interconnected.

9 . The abdominal treatment device of claim 7 , wherein the spacer bonds comprise a stitch bond.

10 . The abdominal treatment device of claim 7 , wherein the spacer bonds comprise a solid bond.

11 . The abdominal treatment device of claim 7 , wherein each of the liquid-impermeable layers has a thickness in the range of 50 to 120 microns.

12 . The abdominal treatment device of claim 7 , wherein:
the annular circles are interconnected; the spacer bonds comprise a stitch bond; and each of the liquid-impermeable layers has a thickness in the range of 50 to 120 microns.

13 . A system for treating an abdominal cavity with reduced pressure, the system comprising:
an abdominal treatment device comprising:
a plurality of liquid-impermeable layers, wherein the plurality of liquid-impermeable layers are at least partially fenestrated,
a micro-channel space between the liquid-impermeable layers;
a foam spacer disposed between at least two layers of the plurality of liquid-impermeable layers, the foam spacer and comprising a plurality of annular circles having an outer peripheral edge and a target flow zone inboard of the outer peripheral edge, and
spacer bonds coupling at least two of the liquid-impermeable layers and disposed along the outer peripheral edge of the foam spacer,
wherein the foam spacer is configured so that the micro-channel space experiences reduced-pressure vectors over an angle that is at least 270 degrees under reduced pressure; and
a reduced-pressure source fluidly coupled to the abdominal treatment device.

14 . The system of claim 13 , wherein the annular circles are interconnected.

15 . The system of claim 13 , wherein the spacer bonds comprise a stitch bond.

16 . The system of claim 13 , wherein the spacer bonds comprise a solid bond.

17 . The system of claim 13 , wherein each of the liquid-impermeable layers has a thickness in the range of 50 to 120 microns.

18 .- 20 . (canceled)

Assignees

• Kci Licensing Inc

Inventors

• Simmons Tyler H
• Sammons Alexander G

Classifications

• A61M1/92

  with liquid supply means · CPC title

• A61M1/916

  specially adapted for deep wounds · CPC title

• A61M2202/0007

  introduced into the body · CPC title

• A61M2210/1021

  Abdominal cavity · CPC title

• A61F13/00068

  Human Necessities · mapped topic