Auto-replenishing, wound-dressing apparatus and method
First Claim
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1. A fluid delivery system comprising:
- a pump comprising a housing having an interior volume, the interior volume being inextensible and vented to discharge gas therefrom, and containing a reservoir and a fluid source in contact with one another,the fluid source containing a fluid having a first wall flexible to move in response to substantially any pressure and substantially impervious to the fluid, and an outlet to dispense the fluid andthe reservoir comprising a second wall, in contact with the first wall to move therewith, substantially impervious to gas;
a galvanic cell in communication with the reservoir and comprising chemicals selected to produce a gas within the reservoir;
a flexible wound dressing to expose the fluid to a skin defect of a subject, the dressing comprising a distribution member configured to receive the fluid and comprising a wicking layer to substantially uniformly distribute the fluid across the distribution member by wicking action irrespective of the orientation of the distribution member; and
a feed conduit connectable to the outlet and in fluid communication with the distribution member to replenish the fluid in the distribution member.
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Accused Products
Abstract
Apparatus and methods to treat skin defects include a pump with reservoirs for a pressurization gas and a fluid. Upon activation, the pump generates a gas introduced into the gas reservoir, a movable wall of which displaces a movable wall of a fluid source, thus dispensing the fluid into the dressing to spread throughout irrespective of orientation of the dressing, maintaining a transport fluid (e.g. carrier) in the dressing and in contact with a skin defect being treated. The dressing may have a distribution network, and multiple members, dispensing the fluid into the dressing and in contact with a skin defect being treated.
72 Citations
20 Claims
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1. A fluid delivery system comprising:
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a pump comprising a housing having an interior volume, the interior volume being inextensible and vented to discharge gas therefrom, and containing a reservoir and a fluid source in contact with one another, the fluid source containing a fluid having a first wall flexible to move in response to substantially any pressure and substantially impervious to the fluid, and an outlet to dispense the fluid and the reservoir comprising a second wall, in contact with the first wall to move therewith, substantially impervious to gas;
a galvanic cell in communication with the reservoir and comprising chemicals selected to produce a gas within the reservoir;a flexible wound dressing to expose the fluid to a skin defect of a subject, the dressing comprising a distribution member configured to receive the fluid and comprising a wicking layer to substantially uniformly distribute the fluid across the distribution member by wicking action irrespective of the orientation of the distribution member; and a feed conduit connectable to the outlet and in fluid communication with the distribution member to replenish the fluid in the distribution member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification