Reduced-pressure systems, devices, and methods for treating a tissue site that includes a fistula

• US 10,682,251 B2
• Filed: 11/15/2017
• Issued: 06/16/2020
• Est. Priority Date: 10/20/2010
• Status: Active Grant

• Current Assignee: Solventum Intellectual Properties Company (Solventum Corp.)
• Original Assignee: KCI Licensing Incorporated (3M Company)
• Inventors: Hall, Colin John, Mormino, Richard Paul
• Primary Examiner(s): Anderson, Catharine L
• Application Number:
  US15/814,274
• Publication Number:
  US 20180125698A1
• Time in Patent Office: 944 Days
• CPC Class Codes: A61F 2005/4455 Implantable
• CPC Class Codes: A61F 5/445 Colostomy, ileostomy or urethrostomy devices A61F5/441, A61F5/442, A61F5/443 take precedence
• CPC Class Codes: A61M 1/915 Constructional details of the pressure distribution manifold
• CPC Class Codes: A61M 1/916 specially adapted for deep wounds
• CPC Class Codes: A61M 27/00 Drainage appliance for wounds or the like , i.e. wound drains, implanted drains negative pressure wound therapy devices A61M1/90; implements for holding wound open A61B17/02 ; middle ear drainage A61F11/202

Abstract

Systems, methods, and devices are disclosed that involve a fistula-isolating device for use when reduced pressure is applied to a wound bed having a fistula. In one instance, the fistula-isolating device includes an adjustable passageway member and a perimeter member that contracts under reduced pressure and that automatically accommodates wound beds of different heights. In another instance, the fistula-isolating device involves a body shaped as a frustro-conical body that is readily sized for different depth wound beds. Other systems, methods, and devices are presented.

Claims

1. A system for providing reduced pressure treatment to a wound bed that includes a fistula, the system comprising:

a fistula-isolating device for isolating a fistula in the wound bed undergoing reduced-pressure treatment, the fistula-isolating device comprising;

an adjustable passageway member, wherein the adjustable passageway member is configured to move between a retracted position and an extended position and is substantially fluid impermeable, and

a perimeter member comprising a fluid permeable material, the perimeter member positioned substantially around an exterior perimeter of the adjustable passageway member;

a distribution manifold having a fistula aperture for receiving the fistula-isolating device;

a sealing member for covering the fistula-isolating device and the distribution manifold to create a sealed space over at least a portion of the wound bed, wherein the sealing member has an ostomy-interface aperture;

a reduced-pressure source for supplying a reduced pressure to the sealed space; and

an ostomy appliance configured to be in fluid communication with the adjustable passageway member.

2. The system of claim 1, wherein the distribution manifold has an initial height h_d1 when not subjected to reduced pressure, the fistula-isolating device has an initial height h_F1 when not subjected to reduced pressure, and h_d1 is substantially equal to h_F1.

3. The system of claim 1, wherein the distribution manifold has a height h_d2 when the sealed space is subjected to reduce pressure in a first therapeutic pressure range, the fistula-isolating device has a height h_F2 when the sealed space is subjected to reduce pressure in the first therapeutic pressure range, and h_d2 is substantially equal to h_F2.

4. A system for providing reduced pressure treatment to a wound bed that includes a fistula, the system comprising:

a fistula-isolating device for isolating a fistula in the wound bed undergoing reduced-pressure treatment, the fistula-isolating device comprising;

an adjustable passageway member, wherein the adjustable passageway member is configured to move between a retracted position and an extended position and is substantially fluid impermeable, and

a perimeter member positioned substantially around an exterior perimeter of the adjustable passageway member, wherein the perimeter member is configured to bias the adjustable passageway member towards the extended position;

a distribution manifold having a fistula aperture for receiving the fistula-isolating device;

a sealing member for covering the fistula-isolating device and the distribution manifold to create a sealed space over at least a portion of the wound bed, wherein the sealing member has an ostomy-interface aperture; and

a reduced-pressure source for supplying a reduced pressure to the sealed space.

5. The system of claim 4, wherein the distribution manifold has an initial height h_d1 when not subjected to reduced pressure, the fistula-isolating device has an initial height h_F1 when not subjected to reduced pressure, and h_d1 is substantially equal to h_F1.

6. The system of claim 4, wherein the distribution manifold has a height h_d2 when the sealed space is subjected to reduce pressure in a first therapeutic pressure range, the fistula-isolating device has a height h_F2 when the sealed space is subjected to reduce pressure in the first therapeutic pressure range, and h_d2 is substantially equal to h_F2.