Externally-applied patient interface system and method
View Patent ↗A surface-wound healing dressing for a wound or incision includes a slip drain located within the closed wound or incision. A wick is placed over the closed wound or incision in contact with the slip drain. A mat is placed over the wick and adapted for fluidic communication therewith. A recoil core includes a foam material and is adapted for placement on the mat. A wound healing method includes the steps of placing a slip drain, placing a wick over the slip drain, placing a recoil core over the wick and covering the recoil core with an overdrape. The overdrape is adapted for connection to an external negative pressure source, such as a vacuum.
1. A surface-wound healing dressing for a closed wound or incision, which dressing includes:
a slip drain configured for placement within said closed wound or incision;
a wick configured for placement over said closed wound or incision and in contact with said slip drain;
a mat configured for placement over said wick and configured for fluidic communication therewith;
an external fluid transfer component including a foam recoil core and configured for placement over said mat;
an overdrape configured for placement over said external fluid transfer component in covering relation and configured for releasable attachment to a patient;
wherein said dressing is configured for draining said closed wound or incision via said slip drain;
wherein said recoil core is configured for compressing under negative pressure and recoiling to its original position when said pressure is removed;
a negative pressure source configured for extracting fluid from said dressing;
wherein said slip drain comprises a flat, flexible material;
wherein said slip drain includes an internal portion configured for placement within said wound or incision and an external portion configured for placement externally thereto;
wherein said slip drain external portion is configured for folding over a skin surface adjacent to said wound or incision; and
wherein said slip drain external portion adheres to said overdrape for extraction when said overdrape is removed.
2. The dressing assembly according to claim 1 , which includes:
said overdrape having an opening to said external fluid transfer component; and
said opening forming a discharge port for discharging fluid from said dressing assembly.
3. The dressing assembly according to claim 1 , wherein said slip drain comprises a plurality of slip drains.
4. The dressing assembly according to claim 2 , which includes:
said external fluid transfer component including proximal and distal surfaces and a perimeter edge extending therebetween;
said wick comprising a proximal wicking material layer engaging said external fluid transfer component proximal surface and configured for overlying said wound or incision; and
a distal wicking material layer engaging said external fluid transfer component distal surface and said overdrape.
5. The dressing assembly according to claim 1 , wherein said recoil core comprises a reticulated, compressible foam material chosen from among the group consisting of polyurethane ether (PUE) and polyvinyl acetate (PVA).
6. The dressing assembly according to claim 1 , wherein said wick comprises rayon.
7. The dressing assembly according to claim 1 , wherein said negative pressure source comprises a manually-operated vacuum-type device.
8. The dressing assembly according to claim 2 , which includes:
a wicking material cover enclosing said external fluid transfer component;
said cover including a perimeter edge;
said fluid transfer component having compressed and uncompressed configurations; and
said wicking material edge buckling and forming a laterally-projecting rim with said fluid transfer component in its compressed configuration.
9. The dressing assembly according to claim 8 , which includes:
said recoil core forming an air-entrapment interior zone with the application of negative pressure thereto;
said recoil core forming a fluid transfer zone at its outer surface and adjacent to said wicking material cover; and
said fluid transfer zone being adapted for directing fluid from said wound or incision to said discharge port.
10. The dressing assembly according to claim 1 , which includes:
a sensor connected to said fluid transfer component and adapted for sensing a characteristic thereof and providing an output signal corresponding to said characteristic;
a controller connected to said sensor and receiving input signals therefrom and providing an output signal to said pressure source; and
a feedback loop connected to said controller output and to said controller for providing a feedback signal corresponding to said controller output and inputting same to said controller.