Disruptive dressing for use with negative pressure and fluid instillation
OwnerChristopher Allen CARROLL, Justin RICEinventors
Life of this patent
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Abstract
A method and apparatus for disrupting material at a tissue site is described. The apparatus includes a modulating layer formed from an open-cell reticulated foam and positionable adjacent the tissue site. The apparatus also includes a macro-column layer formed from a felted foam and having a plurality of through-holes separated from each other by walls. The macro-column layer is positionable adjacent to the modulating layer. The through-holes form nodules in the tissue site in response to negative pressure.
Claims27
A method for disrupting material at a tissue site, the method comprising:
- selecting a modulating layer for use on the tissue site;
- positioning the modulating layer adjacent to the tissue site;
- selecting a macro-column layer, the macro-column layer comprising walls defining a plurality of through-holes;
- positioning the macro-column layer over the modulating layer;
- positioning a sealing member over the macro-column layer;
- sealing the sealing member to tissue surrounding the tissue site to form a sealed space enclosing the macro-column layer and the modulating layer;
- fluidly coupling a negative-pressure source to the sealed space;
- and
- supplying negative pressure to the sealed space, the modulating layer, and the macro-column layer to draw portions of the modulating layer and tissue into the through-holes to form nodules.
A system for softening materials at a tissue site, the system comprising:
- a micro-deformation layer formed from an open-cell reticulated foam and configured to be positioned adjacent the tissue site;
- a macro-deformation layer configured to be positioned adjacent the micro-deformation layer, the macro-deformation layer comprising a plurality of through-holes, and having a thickness greater than a thickness of the micro-deformation layer;
- a cover adapted to form a sealed therapeutic environment over the macro-deformation layer, the micro-deformation layer, and the tissue site for receiving a negative pressure from a negative-pressure source;
- and
- wherein the through-holes are configured to receive tissue and a portion of the micro-deformation layer in the through-holes in response to negative pressure in the sealed therapeutic environment to form nodules in the tissue site.
An apparatus for disrupting debris in a tissue site, the apparatus comprising:
- a modulating layer formed from an open-cell reticulated foam and configured to be positioned adjacent the tissue site;
- a macro-column layer formed from a felted foam and having a plurality of through-holes separated from each other by walls, the macro-column layer configured to be positioned adjacent to the modulating layer;
- and
- wherein the through-holes are configured to form nodules in the tissue site in response to negative pressure.
A method for disrupting material, the method comprising:
- selecting a micro-deformation layer;
- positioning the micro-deformation layer adjacent a surface;
- selecting a macro-deformation layer, the macro-deformation layer comprising walls defining a plurality of through-holes;
- positioning the macro-deformation layer over the micro-deformation layer;
- positioning a cover over the macro-deformation layer, the micro-deformation layer, and the surface;
- sealing the cover to the surface surrounding the micro-deformation layer and the macro-deformation layer to form a sealed volume enclosing the micro-deformation layer and the macro-deformation layer;
- fluidly coupling a negative-pressure source to the sealed volume;
- and
- supplying negative pressure to the sealed volume, the micro-deformation layer, and the macro-deformation layer to draw portions of the micro-deformation layer and the surface into the through-holes to form nodules.
(canceled)
Dependencies are inferred from the claim text.