Surgical cavity drainage and closure system
First Claim
1. A negative pressure surgical drain device comprising a plurality of drain tubes positioned in contact with a surface of an adhesion matrix, the adhesion matrix comprising a layer of porous biodegradable material having a wound conforming shape and comprising a plurality of spaced apertures formed through the layer of the adhesion matrix, the apertures being configured to allow tissue contact through the layer of the adhesion matrix upon implantation into an open wound such that a first tissue surface on a first side of the layer of the adhesion matrix can contact a second tissue surface on a second side of the layer of the adhesion matrix through the plurality of apertures during application of negative pressure to the wound, the drain tubes being positionable at tube receiving regions of the layer of the adhesion matrix between the spaced apertures and wherein the drain tubes are configured to be removed from contact with the surface of the layer of the adhesion matrix after application of negative pressure to the adhesion matrix, the adhesion matrix being configured to remain in the wound upon removal of the drain tubes from the wound.
1 Assignment
0 Petitions
Accused Products
Abstract
A surgical drain device includes a matrix of biodegradable polymer material and a plurality of drain tubes attached to the matrix. The device is implanted within a surgical wound to treat the presence of seromas, for example, and is used to promote drainage, tissue adhesion, and wound closure. The drain tubes converge into a common collection tube that leads wound fluid outside the body under gravity feed or negative pressure applied to the collection tube. The matrix contains an array of apertures that allow tissue contact across the device. A preferred embodiment comprises a tissue anchoring system including anchor elements such as hooks or barbs. The device can be used with a negative pressure system to further improve the drainage band can also be used with a wound dressing. The device and systems containing the device are particularly useful to promote the healing of surgical wounds from abdominal surgery.
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Citations
42 Claims
- 1. A negative pressure surgical drain device comprising a plurality of drain tubes positioned in contact with a surface of an adhesion matrix, the adhesion matrix comprising a layer of porous biodegradable material having a wound conforming shape and comprising a plurality of spaced apertures formed through the layer of the adhesion matrix, the apertures being configured to allow tissue contact through the layer of the adhesion matrix upon implantation into an open wound such that a first tissue surface on a first side of the layer of the adhesion matrix can contact a second tissue surface on a second side of the layer of the adhesion matrix through the plurality of apertures during application of negative pressure to the wound, the drain tubes being positionable at tube receiving regions of the layer of the adhesion matrix between the spaced apertures and wherein the drain tubes are configured to be removed from contact with the surface of the layer of the adhesion matrix after application of negative pressure to the adhesion matrix, the adhesion matrix being configured to remain in the wound upon removal of the drain tubes from the wound.
- 20. A negative pressure surgical drain device comprising a matrix having a wound conforming shape for abdominal flap surgery, the matrix comprising a layer of porous biodegradable material having a plurality of spaced apart apertures formed through the layer and configured to allow tissue contact through the matrix upon placement into an abdominal wound such that a first tissue surface within the abdominal wound on a first side of the matrix can contact a second tissue surface on a tissue flap of the abdominal wound on a second side of the matrix through the plurality of apertures during application of negative pressure to the wound, the matrix further comprising tube receiving regions on a surface of the matrix layer adapted to receive a plurality of drain tubes connectable to a negative pressure source, the tube receiving regions extending across the surface of the matrix and wherein one or more of the plurality of apertures are located between the tube receiving regions and are configured such that the drain tubes can be removed from the wound after the application of negative pressure to the wound such that the matrix remains in the wound after wound closure.
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36. A negative pressure surgical drain device comprising:
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a matrix having a wound conforming shape and a drain channel; and a drainage element positioned within the drain channel wherein the matrix comprises a layer of porous biodegradable polymer and a plurality of spaced apertures formed through the layer and configured to allow tissue contact through the matrix, the plurality of spaced apertures having a total area of at least 50 percent of an area of a first side of the matrix such that a first tissue surface on the first side of the matrix can contact a second tissue surface on a second side of the matrix through the plurality of spaced apertures during application of negative pressure to the matrix, the drainage element being connectable to a negative pressure source and configured to be removed from the drain channel that is positioned between apertures of the matrix, the matrix being configured to remain in the wound upon removal of the drainage element from the drain channel. - View Dependent Claims (37, 38, 39, 40, 41, 42)
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Specification