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US 9,789,234 B2Granted
Systems and methods for delivering fluid to a wound therapy dressing
AssigneeKCI Licensing, Inc.
InventorsBenjamin Andrew Pratt, Kingsley Robert George Flower, Richard Daniel John Coulthard, Michael Bernard Beasley, Daniel Evans
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Abstract
Provided are systems and methods for delivery of fluid to a wound therapy dressing. In exemplary embodiments, a pressure source provides negative pressure to a wound dressing and a biasing mechanism provides positive pressure to a fluid reservoir.
Claims11
A method of providing instillation fluid and negative pressure to a wound dressing, the method comprising:
- applying negative pressure to the wound dressing while inhibiting instillation fluid flow to the wound dressing;
- ceasing to apply negative pressure to the wound dressing and measuring a volumetric leak rate from the wound dressing;
- enabling instillation fluid flow to the wound dressing;
- measuring the flow rate of the instillation fluid flow and the pressure at the wound dressing;
- verifying wound dressing pressure is substantially at atmospheric pressure;
- ceasing the flow of instillation fluid flow to the wound dressing;
- allowing the instillation fluid to remain in the wound dressing;
- and
- removing the instillation fluid from the wound dressing.
6 more elements
A method of providing instillation fluid and negative pressure to a wound dressing, comprising:
- applying negative pressure to the wound dressing;
- ceasing to apply negative pressure to the wound dressing when the negative pressure in the wound dressing reaches a target negative pressure;
- measuring a volumetric leak rate of the negative pressure from the wound dressing;
- enabling instillation fluid flow to the wound dressing after the wound dressing reaches the target negative pressure, wherein the instillation fluid flow to the wound dressing is substantially inhibited prior to the negative pressure in the wound dressing reaching the target negative pressure and the volumetric leak rate being measured;
- measuring a flow rate of the instillation fluid to the wound dressing;
- monitoring the negative pressure in the wound dressing as the instillation fluid flows into the wound dressing;
- ceasing the instillation fluid flow to the wound dressing when the negative pressure in the wound dressing is substantially at atmospheric pressure;
- allowing the instillation fluid to remain in the wound dressing for a predetermined time period;
- and
- removing the instillation fluid from the wound dressing after the predetermined time period.
7 more elements
Dependencies are inferred from the claim text.