Apparatuses and methods for negative pressure wound therapy
First Claim
Patent Images
1. An apparatus to provide suction to a wound site through a drape covering the wound site, the apparatus comprising:
- an applicator configured to be positioned over an opening in the drape, the applicator comprising;
a flexible layer having an upper surface and a lower surface;
an adhesive provided on the lower surface of the flexible layer configured to seal the applicator to the drape; and
a removable protective release layer provided over the adhesive on the lower surface of the flexible layer; and
a bridge comprising;
a proximal end provided with a connector configured to provide fluid communication with a source of negative pressure,an enlarged distal end having at least one aperture therethrough, the enlarged distal end of the bridge coupled to the applicator,an upper wall and a lower wall extending between the proximal end and the enlarged distal end, andat least a first channel and a second channel positioned between the upper wall and the lower wall such that at least one of the first channel and second channel is configured to provide fluid communication between the at least one aperture and the connector;
wherein the flexible layer of the applicator is coupled using an adhesive to the enlarged distal end of the bridge.
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Abstract
Disclosed herein are several embodiments of a negative pressure appliance and methods of using the same in the treatment of wounds. Some embodiments are directed to improved fluidic connectors or suction adapters for connecting to a wound site, for example using softer, kink-free conformable suction adapters.
366 Citations
51 Claims
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1. An apparatus to provide suction to a wound site through a drape covering the wound site, the apparatus comprising:
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an applicator configured to be positioned over an opening in the drape, the applicator comprising; a flexible layer having an upper surface and a lower surface; an adhesive provided on the lower surface of the flexible layer configured to seal the applicator to the drape; and a removable protective release layer provided over the adhesive on the lower surface of the flexible layer; and a bridge comprising; a proximal end provided with a connector configured to provide fluid communication with a source of negative pressure, an enlarged distal end having at least one aperture therethrough, the enlarged distal end of the bridge coupled to the applicator, an upper wall and a lower wall extending between the proximal end and the enlarged distal end, and at least a first channel and a second channel positioned between the upper wall and the lower wall such that at least one of the first channel and second channel is configured to provide fluid communication between the at least one aperture and the connector; wherein the flexible layer of the applicator is coupled using an adhesive to the enlarged distal end of the bridge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. An apparatus to provide suction to a wound site through drape covering the wound site, the apparatus comprising:
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a bridge comprising; a proximal end provided with a connector configured to provide fluid communication with a source of negative pressure, an enlarged distal end having at least one aperture therethrough, an upper wall and a lower wall extending between the proximal end and the enlarged distal end, and at least a first channel and a second channel positioned between the upper wall and the lower wall such that at least one of the first channel and second channel is configured to provide fluid communication between the at least one aperture and the connector; and an applicator configured to be positioned over an opening in the drape comprising a flexible layer having an area that is larger than an area of the enlarged distal end of the bridge; wherein the flexible layer of the applicator is coupled using an adhesive to the enlarged distal end of the bridge. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33)
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34. An apparatus to provide suction to a wound site through a drape covering the wound site, the apparatus comprising:
a suction adapter configured to be sealed to the drape covering a wound site, the suction adapter comprising; an applicator configured to be positioned over an opening in the drape, the applicator comprising at least one aperture, the applicator further comprising; a flexible layer having an upper surface and a lower surface; a first adhesive provided on the lower surface of the flexible layer configured to seal the applicator to the drape; and a bridge portion comprising; a proximal end provided with a connector configured to provide fluid communication with a source of negative pressure; a distal end positioned over the at least one aperture in the applicator; and a first channel and a second channel extending parallel to an upper surface of the applicator, wherein at least one of the first channel and second channel is configured to provide suction to the wound site through the aperture in the applicator from the source of negative pressure; a visualization window provided in an upper surface of the bridge portion over the at least one aperture in the applicator that provides visualization from outside of the suction adapter, through the visualization window and through the aperture in the applicator; and a straight wall between at least a portion of the first channel and a portion of the second channel, wherein the straight wall comprises a flat surface and extends distally within the bridge portion past the aperture; wherein the flexible layer of the applicator is coupled using a second adhesive to the distal end of the bridge portion. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49)
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50. An apparatus to provide suction to a wound site through a drape covering the wound site, the apparatus comprising:
a suction adapter configured to be sealed to the drape covering a wound site, the suction adapter comprising; an applicator configured to be positioned over an opening in the drape, the applicator comprising; at least one aperture; a flexible layer having an upper surface and a lower surface; and a first adhesive provided on the lower surface of the flexible layer configured to seal the applicator to the drape; a bridge portion comprising; a proximal end provided with a connector configured to provide fluid communication with a source of negative pressure; a distal end positioned over the at least one aperture in the applicator; and a first channel and a second channel extending parallel to an upper surface of the applicator, wherein the first channel is configured to provide suction to the wound site through the aperture in the applicator from the source of negative pressure and the second channel is configured to provide vented air to the wound site through the aperture in the applicator from an air leak; a visualization window provided in an upper surface of the bridge portion over the at least one aperture in the applicator that provides visualization from outside of the suction adapter, through the visualization window and through the aperture in the applicator; and a straight wall having a flat surface, the straight wall extending below the visualization window, distally within the bridge portion past the aperture, wherein the straight wall at least partially partitions the first channel from the second channel; wherein the flexible layer of the applicator is coupled using a second adhesive to the distal end of the bridge portion.
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51. A method of treating a wound, the method comprising:
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providing a suction adapter comprising; an applicator configured to be positioned over an opening in the drape comprising; at least one aperture; a flexible layer having an upper surface and a lower surface; a first adhesive provided on the lower surface of the flexible layer configured to seal the applicator to the drape; and a bridge portion comprising; a proximal end provided with a connector configured to provide fluid communication with a source of negative pressure; a distal end positioned over the at least one aperture in the applicator; and a first channel and a second channel extending parallel to an upper surface of the applicator, wherein at least one of the first channel and second channel is configured to provide suction to the wound site through the aperture in the applicator from the source of negative pressure; a visualization window provided in an upper surface of the bridge portion over the at least one aperture in the applicator that provides visualization from outside of the suction adapter, through the visualization window and through the aperture in the applicator; and a straight wall between at least a portion of the first channel and a portion of the second channel, wherein the straight wall comprises a flat surface and extends distally within the bridge portion past the aperture; wherein the flexible layer of the applicator is coupled using a second adhesive to the distal end of the bridge portion; situating the at least one aperture of the applicator of the suction adapter over an opening in a drape covering the wound, using the viewing window as a positioning aid; and sealing the suction adapter to the drape.
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Specification