Closed wound drainage system
First Claim
1. A closed wound dressing system comprising:
- a layer of moisture permeable gel for application to an upper surface of a wound area and forming a cavity in the gel layer that is open to a wound adjacent to the lower surface of the gel layer, the gel layer being sized to extend beyond the upper surface of the wound area to cover and extend over the wound area without extending into the wound area for attachment to healthy skin outside the wound area, the lower surface of the gel layer adhering to the healthy skin around the wound area without the use of adhesives, the gel layer is permeable to moisture,tubing having an inner conduit, a distal end and a proximal end, a distal end portion of the tubing extending into the cavity, the tubing being attached to a gel sealant and extending into the cavity formed in the gel layer,a vacuum pump attached to the proximal end of the tubing to apply a negative pressure to the inner conduit,a porous material attached to the lower surface of the gel layer extending across an opening to the cavity below the distal end of the tubing without extending into the wound area so that material drawn from a wound into the tubing passes through the porous material,a porous packing packed in the cavity in the gel layer without extending into the wound area; and
a container connected to a proximal end portion of the tubing to accept material drawn into the tubing from a wound.
3 Assignments
0 Petitions
Accused Products
Abstract
A portable closed wound drainage system that uses a pouch shaped dressing which is inserted into a wound. At least a portion of the outer surface of the pouch 1 is porous to allow exudates to enter. Exudates are removed from the pouch by flexible tubing which is secured inside the pouch at one end, and secured at the other end to a portable drain/suction unit. The pouch contains porous material, and may optionally contain beads and fillers which are antibacterial in nature. The tubing can have a single or multi-lumen structure with perforations in the side walls of the end of the tube that is inserted in the pouch to allow body fluids to enter laterally. The portable drain/suction unit is preferably a portable battery powered device. The pouch and the tube are sealed by a flexible sealing material which is applied to the outer surface of the skin around the periphery of the pouch and the tubing as it exits the pouch. This sealing material is preferably a hydro-colloid, a silicone, or a lyogel, such as a hydrogel, which are easily deformable. A cosmetic cover sheet is attached to the patient'"'"'s skin over the closed wound drainage system.
384 Citations
41 Claims
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1. A closed wound dressing system comprising:
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a layer of moisture permeable gel for application to an upper surface of a wound area and forming a cavity in the gel layer that is open to a wound adjacent to the lower surface of the gel layer, the gel layer being sized to extend beyond the upper surface of the wound area to cover and extend over the wound area without extending into the wound area for attachment to healthy skin outside the wound area, the lower surface of the gel layer adhering to the healthy skin around the wound area without the use of adhesives, the gel layer is permeable to moisture, tubing having an inner conduit, a distal end and a proximal end, a distal end portion of the tubing extending into the cavity, the tubing being attached to a gel sealant and extending into the cavity formed in the gel layer, a vacuum pump attached to the proximal end of the tubing to apply a negative pressure to the inner conduit, a porous material attached to the lower surface of the gel layer extending across an opening to the cavity below the distal end of the tubing without extending into the wound area so that material drawn from a wound into the tubing passes through the porous material, a porous packing packed in the cavity in the gel layer without extending into the wound area; and a container connected to a proximal end portion of the tubing to accept material drawn into the tubing from a wound. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A closed wound dressing system comprising:
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a layer of moisture permeable gel for application to an upper surface of a wound area and forming a cavity in the gel layer that is open to a wound adjacent to the lower surface of the gel layer, the gel layer being sized to extend beyond the upper surface of the wound area to cover and extend over the wound area without extending into the wound area for attachment to healthy skin outside the wound area, the lower surface of the gel layer adhering to the healthy skin around the wound area without the use of adhesives, the gel layer is permeable to moisture, the gel layer comprising a water soluble humectant entrapped within a polymeric matrix having therein acrylic acid or acrylamide monomer moieties, tubing having an inner conduit, a distal end and a proximal end, a distal end portion of the tubing extending into the cavity, the tubing being attached to a gel sealant and extending into the cavity formed in the gel layer, a vacuum pump attached to the proximal end of the tubing to apply a negative pressure to the inner conduit, a porous material attached to the lower surface of the gel layer extending across an opening to the cavity without extending into the wound area so that material drawn from a wound into the tubing passes through the porous material, the porous material covering and extending over the wound area without extending into the wound area, a porous packing packed in the cavity in the gel layer without extending into the wound area; and a container connected to a proximal end portion of the tubing to accept material drawn into the tubing from a wound. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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Specification