Reduced pressure treatment system

• US 9,211,365 B2
• Filed: 12/27/2013
• Issued: 12/15/2015
• Est. Priority Date: 09/03/2002
• Status: Expired due to Fees

• Current Assignee: Smith & Nephew Incorporated (Smith & Nephew PLC)
• Original Assignee: Bluesky Medical Group Inc. (Smith & Nephew PLC)
• Inventors: Weston, Richard Scott
• Primary Examiner(s): Anderson, Lynne
• Application Number:
  US14/142,635
• Publication Number:
  US 20140114263A1
• Time in Patent Office: 718 Days
• US Class Current: 1/1
• CPC Class Codes: A61F 13/00059 provided with visual effects, e.g. printed or colored
• CPC Class Codes: A61F 13/05 specially adapted for use with sub-pressure or over-pressure therapy, wound drainage or wound irrigation, e.g. for use with negative-pressure wound therapy [NPWT]
• CPC Class Codes: A61F 15/008 Appliances for wound protecting, e.g. avoiding contact between wound and bandage corn plasters A61F13/063
• CPC Class Codes: A61F 2013/00153 coloured or with decoration pattern or printing
• CPC Class Codes: A61F 2013/0028 applying of mechanical pressure; passive massage
• CPC Class Codes: A61M 1/732 Visual indicating means for vacuum pressure
• CPC Class Codes: A61M 1/915 Constructional details of the pressure distribution manifold
• CPC Class Codes: A61M 1/962 having pumping means on the suction site, e.g. miniature pump on dressing or dressing capable of exerting suction
• CPC Class Codes: A61M 1/966 having a pressure sensor on or near the dressing
• CPC Class Codes: A61M 1/982 with means for detecting level of collected exudate
• CPC Class Codes: A61M 2205/3344 Measuring or controlling pressure at the body treatment site

Abstract

A wound treatment apparatus is provided for treating tissue damage, which comprises a fluid impermeable wound cover sealed over a site for purposes of applying a reduced pressure to the site. The apparatus also can include a cover with protrusions on its surface for purposes of monitoring pressure at the site. One or more sensors can be positioned under the cover to provide feedback to a suction pump controller. The apparatus can have a miniature and portable vacuum source connected to the wound cover.

Claims

1. A system for treating a wound on a patient with reduced pressure, the system comprising:

a dressing comprising;

a matrix material to distribute suction across the wound,

a wound cover for covering the matrix material and a portion of the patient'"'"'s epidermis,

a suction port coupled to the wound cover for providing reduced pressure to the matrix material, and

a reduced pressure indicator comprising;

a displaceable portion that is adapted to move when reduced pressure under the wound cover exceeds a threshold value, and

a visual indicator associated with the displaceable portion;

a reduced pressure source; and

a tubing for fluidly coupling the reduced pressure source to the suction port.

2. The system for treating a wound of claim 1, wherein the displaceable portion comprises a collapsible wall and the visual indicator comprises an indicator member coupled to the collapsible wall, the visual indicator having an extended position and a retracted position.

3. The system for treating a wound of claim 1,

wherein the displaceable portion comprises a collapsible wall, having a first end and a second end;

wherein the visual indicator comprises an indicator member coupled to the first end of the collapsible wall and wherein the indicator member has an extended position and a retracted position; and

further comprising a base coupled to the second end of the collapsible wall and wherein the base is coupled to the wound cover.

4. A system for administering a reduced pressure treatment to a wound site, comprising:

a wound dressing comprising a wound cover for covering and enclosing the wound site and the surrounding normal skin at the wound site;

at least one pressure measurement device to measure pressure beneath the wound cover and configured to measure pressure beneath the wound cover in a plurality of areas; and

a vacuum system comprising;

a reduced pressure source; and

a control device configured to transmit electrical signals to control the reduced pressure source, the control device comprising a feedback system to control the reduced pressure source based on one or more pressure differentials measured using the at least one pressure measurement device.

5. A system for administering a reduced pressure treatment to a wound site, comprising:

a wound dressing comprising a wound cover for covering and enclosing the wound site and the surrounding normal skin at the wound site;

at least one pressure measurement device to measure pressure beneath the wound cover;

a vacuum system comprising;

a reduced pressure source; and

a control device configured to transmit electrical signals to control the reduced pressure source, the control device comprising a feedback system to control the reduced pressure source based on one or more pressure differentials measured using the at least one pressure measurement device;

wherein the feedback system is configured to control the pump based on a pressure differential between a suction reading outside of the pump and a pressure reading under the wound cover.

6. A system for administering a reduced pressure treatment to a wound site, comprising:

a wound dressing comprising a wound cover for covering and enclosing the wound site and the surrounding normal skin at the wound site;

at least one pressure measurement device to monitor pressure beneath the wound cover in a plurality of areas; and

a vacuum system comprising;

a reduced pressure source; and

a control device configured to transmit electrical signals to control the reduced pressure source, the control device comprising a system to control the reduced pressure source based on pressure measured using the at least one pressure measurement device.

7. The system of claim 6, wherein the wound dressing further comprises a matrix material beneath the wound cover to distribute suction across the wound site.

8. The system of claim 6, further comprising a suction port coupled to the wound cover for providing reduced pressure below the wound cover.

9. The system of claim 6, further comprising a tube connecting the dressing to the reduced pressure source.