|Publication number||US3610238 A|
|Publication date||5 Oct 1971|
|Filing date||28 Apr 1970|
|Priority date||28 Apr 1970|
|Publication number||US 3610238 A, US 3610238A, US-A-3610238, US3610238 A, US3610238A|
|Inventors||Edward Rich Jr|
|Original Assignee||Us Health Education & Welfare|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (3), Referenced by (163), Classifications (19)|
|External Links: USPTO, USPTO Assignment, Espacenet|
' United States Patent Edward Rich, .l r.
College Park, Md.
Apr. 28, 1970 Oct. 5, 1971 The United States at America as represented by the Secretary at the Department of Health, Education and Welfare lnventor Appl. No. Filed Patented Assignee WOUND INFECTION PREVENTION DEVICE 10 Claims, 5 Drawing Figs.
US. 128/184, l28/l 32 Int. Cl.. Abllll 13/00 Field of Search 128/184, 254, 256, 257, 399, 400, DIG. 20, 402, 38, I32, I54, 297
Relerences Cited UNITED STATES PATENTS l,965,424 7/l934 Mascolo l28/256 3,026,874 3/1962 Stevens l28/260 3,307,553 3/1967 Liebner l28/400 Primary Examiner-Richard A. Gaudet Assistant Examiner-J. 8. Mitchell Attorney-Browdy and Neimark ABSTRACT: A wound infection prevention device, for the treatment of burns, skin lesions, etc., comprises a cellular foam plastic pad encased by impervious plastic sheets and to which air under pressure may be fed to an annular space about.
the periphery of the foam plastic pad. In use the device is removed from a sterile package, the physician cuts a hole in the center entirely through the material and of sufficient size to surround the wound, and air is then fed under pressure into the annular space and then passes through the body of the porous pad onto the wound and then passes upwardly to prevent the settling of bacteria-bearing dust on the wound.
PATENTEDUET 519m 3,610 288 SHEET 1 OF 2 INVENTOR 62mg M )2? BY W ATTORNEY;
PATENTEUBIIT 5|97l 3,610,238
sum 2 UF 2 INVENTOR ATTORNEYS WOUND INFECTION PREVENTION DEVICE The present invention relates to a wound infection prevention device and, more particularly, to a device which promotes healing of a wound and simultaneously prevents infection of the wound from outside sources by the constant blowing of air or oxygen over the wound.
One of the most troublesome problems in the medical field,
either after surgery or in the treatment of burns or other severe skin lesions, is the risk of infection. This problem of in- I fection is particularly great when bandages or other coverings cannot be applied to the wound. Even when a bandage can be so applied, this serves to cut off the healing supply of oxygen to the wound and inhibits rapid healing.
To overcome these problems it has been suggested that the patient be enclosed in a tent to exclude bacteria and other microbes. However, besides the expense of such an expedient, this does not exclude microbes eminating from the patient himself. Another suggested proposal has been the use of laminar flow canopies to continuously air wash the wound, but these devices are exceedingly expensive costing on the order of several thousand dollars apiece.
Accordingly, the available choices facing the physician in the treatment of burns, skin lesions, etc., to prevent infection are: (a) applying medication to prevent infection, but cutting off air to the wound; (b) covering the wound, with resultant damage to skin tissue with removal of the covering, and also cutting down the amount of air reaching the wound; (c) enclosing the patient in a tent to exclude room microbial contents, but not those eminating from the patient; and (d) using laminar flow canopies to continuously air wash the wound at an exceedingly high cost.
A wound infection prevention device has now been developed to overcome the above defects, the device comprising a porous pad encased in an air-impervious bag to which the upper and lower surfaces of the pad are attached, and the device defining a annular channel surrounding the periphery of the pad into which air may be fed under pressure. The entire device may be manufactured in annular shape, or the center section may be cut out immediately prior to use. In either event the device is placed around the wound on the skin of the patient and air is fed to the annular chamber and passes through the porous pad and then flushes over the wound and then upwardly to prevent dust and airborne bacteria from falling on the wound.
It is, accordingly, an object of the present invention to overcome the defects of the prior art, such as indicated above.
It is another object of the present invention to provide a new technique for aiding in the rapid healing of wounds.
It is another object of the present invention to provide a wound infection prevention device which both assists in rapid healing of wounds and serves to reduce the risk of infection.
It is another object of the present invention to provide a wound infection prevention device which does not cut off air to the wound, which does not damage skin tissue, which serves to exclude bacteria from contact with the wound, and yet which is simple and inexpensive.
To the attainment of these ends and the accomplishment of the above as well as other new and useful objects as will appear below, the present invention is provided by way of the following exemplary and nonlimitative description and the accompanying drawings of an exemplification illustrating this invention, and in which:
FIG. 1 is a perspective view of a device in accordance with the present invention;
FIG. 2 is a plan view of the device of FIG. 1, prior to its adaptation by the physician for use;
FIG. 3 is a section taken along lines 3-3 of FIG. 2;
FIG. 4 is a sectional view, similar to FIG. 3, showing the device in use; and
FIG. 5 is a diagrammatic view showing the device in use.
In its illustrated form, the wound infection prevention device can generally comprise a porous pad 12, a bag 14 of air-impervious material encompassing the pad 12 and attached to its upper and lower surfaces, the bag defining an annular channel 16 surrounding the periphery of the pad 12. In addition, an air inlet means such as a tube or pipe I8 is provided which penetrates the bag [4 at the location of the annular channel 16. While the device 10 is illustrated as being of rectangular configuration, it will, of course, be understood that any shape is suitable, such as elliptical or circular. In more detail, it is preferred that the pad 12 be formed of a cellularfoam plastic material, preferably open-cell polyurethane foam; in the preferred embodiment, the cell size is on the order of mesh. Other materials can be used as replacements for the polyurethane foam plastic, and these other materials include other sponge plastic or sponge rubber. It is also possible to use a porous material formed of interlocked or woven fibers; as an example fiber glass or cotton padding may be mentioned. However, the polyurethane foam is preferred because of its filtering ability, its inertness, its low expense and its ability to be easily sterilized.
The bag 14 which encompasses the pad 12 is preferably formed of plastic material, such as polyethylene, polypropylene, vinyl plastic, etc., although it may be formed of other air-impervious materials such as metal foil. In either event, however, the bag is preferably formed of two sheets I42 and 144 of air-impervious material laminated or otherwise united at their peripheries to each other to form a seam I46. As indicated above, the bag I4 is attached along its inner surface to the outer surfaces of the pad 12; this attachment may be made by means of adhesive, heat-sealing or any other laminating procedure. The seam 146 is preferably formed by heat sealing the plastic sheets I44 and I42.
Preferably the device 10 is provided on one of its exterior surfaces with an adhesive coating 20 suitable for application to the skin. It will be understood, however, that the adhesive layer 20 is not essential and that in operation the device may be taped to the skin using conventional adhesive tape.
The plastic air or oxygen pipe 18 is preferably provided along its length with a filter 22, and the free end of such air pipe 18 is adapted to be connected to a suitable source (not shown) of air or oxygen pressure, such as a tank of compressed air, oxygen or other gas, or a simple air pump or compressor. Other means may be optionally placed along the length of the air pipe 18 for insuring that the air is germ free, and such other means may include a device for feeding minute quantities of an antiseptic gas, e.g., up to I00 parts per million of ethylene oxide, or the air passing through tube 18 may be bubbled through a liquid antiseptic. Another alternative is the provision of an antiseptic in the filter 22.
It will be understood that after manufacture the device will be incorporated into a sterile package, e.g., a plastic bag the contents of which are sterilized with ethylene oxide. The devices are distributed in this form and remain sterile until they are needed for use. When needed, the device 10 is removed aseptically by the physician, foldedin half and a portion is cut out of the center such as shown in FIG. I, the opening representing the major area of the patient to be protected. If the device has the adhesive coating 20, a paper covering is removed therefrom for application to the patient; alternatively the device is merely taped to the patient so that the cutaway opening overlies the wound. Alternately, the device can be manufactured in annular form with the opening provided in the center thereof, in which case little or no cutting will be required by the physician.
After removal of the device from its sterile container and any cutting which is required, the device is then placed on the patient as indicated above. The free end of the tube I8 is connected to the source of pressurized gas and the suitable gas, preferably air, is introduced to the device as shown in FIG. 5. It will be seen best from FIG. 4 that the filtered air passes through the tube 18, around the annular plenum or space I6 and through the porous pad 12. After passage through such pad, the air then flushes over the wound 24 of the patient 26, and from there the air then moves upwardly as shown by the arrows in FIG. 4. Since the air can only travel freely upwardly,
a blanket flow is produced that results in a protective environment about the wound 24.
The material used for the pad 12, preferably a flexible polyurethane foam of the type described above, should be an open material which has an effective pore size of several microns. The porous cellular polyurethane foam structure has a geometry which is such that over a distance of 0.5 inches,
the cellular foam entraps bacteria at the low air pressures utilized and provides clean air with no measurable microbial content. Another advantage to the cellular polyurethane foam, or similar plastic foam, is that the multiple-pore structure provides a relatively unifonn distribution of air about the entire periphery of the wound.
Among the advantages of the present invention are its ability to afford substantial protection against infection; the fact that it is flat, and does not interfere with surgery; the fact that it is a very economical means of affording the desired protection for burned and open wound areas; the fact that it is sterilizable, the fact that it is usable in and out of the hospital; and the fact that the material is inert and not conductive to infection.
The foregoing description of the specific embodiments will so fully reveal the general nature of the invention that others can, by applying current knowledge, readily modify such specific embodiments and/or adapt them for various applications without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalence of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for purposes of description and not of limitation.
For example, it will be understood that the opening in the center may be increased or decreased in size without changing the basic diffusion characteristics within the limits of adequate introduction of air to maintain such characteristics and this is particularly true where the cellular-foam plastic pad is used. It will also be understood that the annular ring peripheral to the pad may assume an irregular or other geometrical configuration so as to conform with any necessary physical requirement. Also, the plastic pipe 18 may be introduced at other points of an attachment to the bag for purposes of convenience or for regulating airflow without altering the basic periphery-to-center airflow characteristic. Also, while the disclosed embodiment is shown as comprising but a single pad with a single annular plenum, it will be understood that several annular rings may coexist as separations in the foam plastic material with several plastic pipes being provided and so attached for the introduction of air to control the volume of airflow to the center opening.
What is claimed is:
l. A wound infection prevention device comprising a porous pad; a bag of air-impervious material encompassing said pad and attached to at least the peripheral edges of the upper and lower surfaces thereof, said bag defining an annular channel surrounding the periphery of said pad; and air inlet means penetrating said bag at said annular channel.
2. A device in accordance with claim I wherein said porous pad comprises a cellular-foam plastic material.
3. A device in accordance with claim 2 wherein said foam plastic is polyurethane.
4. A device in accordance with claim 1 wherein said bag is formed of plastic.
5. A device in accordance with claim 4 wherein said plastic bag comprises a pair of plastic sheets laminated at their peripheries to each other, and each being respectively laminated to opposite surfaces of said porous pad to effect said attachment.
6. A device in accordance with claim 5 wherein said sheets are laminated to said porous pad by means of adhesive.
7. A device in accordance with claim 1 wherein said air inlet means comprises a plastic pipe passing through said bag at said annular channel, said plastic pipe being adapted for connection at its other end to means for feeding air under pressure therethrough; and a filter disposed along the length of said plastic pipe.
8. A device in accordance with claim 1 further comprising a layer of adhesive along one outside surface of said bag.
9. A device in accordance with claim I of annular form whereby an opening is provided in the center thereof, which opening passes through both said bag and said pad.
10. A device in accordance with claim I wherein said porous pad is formed of an inert plastic foam; said bag of airimpervious material is formed of two sheets of film material laminated to one another at their peripheries and each adhesively united to said porous plastic pad; said air inlet means comprises a plastic pipe having a filter along its length and adapted for connection to a source of pressurized gas; and further comprising a layer of adhesive along the outside surface of one of said sheets of film material.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US1965424 *||7 May 1932||3 Jul 1934||Nino Mascolo||Facial treatment apparatus|
|US3026874 *||6 Nov 1959||27 Mar 1962||Robert C Stevens||Wound shield|
|US3307553 *||30 Jan 1963||7 Mar 1967||Edwin J Liebner||Apparatus for cooling irradiated skin areas|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US3763857 *||24 Apr 1972||9 Oct 1973||Kimberly Clark Co||Surgical drape|
|US3810471 *||22 Mar 1972||14 May 1974||A Truhan||Surgical aspirating cannula|
|US3824998 *||12 Oct 1971||23 Jul 1974||Celanese Corp||First aid dressing for wounds or burns|
|US3866612 *||16 Jan 1974||18 Feb 1975||Buker Vernon W||Apparatus for treatment of skin lesions|
|US3927667 *||21 May 1974||23 Dec 1975||Canadian Patents Dev||Diffuser drape|
|US4382441 *||6 Dec 1979||10 May 1983||Svedman Paul||Device for treating tissues, for example skin|
|US4416281 *||26 May 1981||22 Nov 1983||Guardline Disposables Limited||Surgical cushion for cooling an organ|
|US4450845 *||22 Feb 1982||29 May 1984||Minneapolis Medical Research Foundation, Inc.||Device for shielding human skin from ambient light to facilitate tests performed thereon|
|US4608041 *||11 Oct 1982||26 Aug 1986||Frese Nielsen||Device for treatment of wounds in body tissue of patients by exposure to jets of gas|
|US4743232 *||6 Oct 1986||10 May 1988||The Clinipad Corporation||Package assembly for plastic film bandage|
|US4921492 *||31 May 1988||1 May 1990||Laser Technologies Group, Inc.||End effector for surgical plume evacuator|
|US4969869 *||11 Jan 1989||13 Nov 1990||Burgin Kermit H||Pillow construction and medication dispenser|
|US4969881 *||6 Nov 1989||13 Nov 1990||Connecticut Artcraft Corp.||Disposable hyperbaric oxygen dressing|
|US5192276 *||14 Dec 1990||9 Mar 1993||Gatti John E||Smoke aspirating device|
|US5636643 *||9 Mar 1993||10 Jun 1997||Wake Forest University||Wound treatment employing reduced pressure|
|US5645081 *||14 Nov 1991||8 Jul 1997||Wake Forest University||Method of treating tissue damage and apparatus for same|
|US5817145 *||21 Nov 1994||6 Oct 1998||Augustine Medical, Inc.||Wound treatment device|
|US5882349 *||26 Dec 1995||16 Mar 1999||Geomarine Systems, Inc.||Patient moisture control support surface coverlet|
|US5947914 *||29 Dec 1997||7 Sep 1999||Augustine Medical, Inc.||Wound covering|
|US5954680 *||21 Jan 1997||21 Sep 1999||Augustine Medical, Inc.||Near hyperthermic heater wound covering|
|US5964721 *||14 Oct 1998||12 Oct 1999||Augustine Medical, Inc.||Wound covering|
|US5964723 *||21 Jan 1997||12 Oct 1999||Augustine Medical, Inc.||Normothermic tissue heating wound covering|
|US5986163 *||21 Jan 1997||16 Nov 1999||Augustine Medical, Inc.||Normothermic heater wound covering|
|US6010527 *||6 Nov 1997||4 Jan 2000||Augustine Medical, Inc.||Wound treatment device|
|US6013097 *||21 Nov 1995||11 Jan 2000||Augautine Medical, Inc.||Wound treatment device for attachment to skin|
|US6045518 *||18 Mar 1999||4 Apr 2000||Augustine Medical, Inc.||Normothermic heater wound covering|
|US6071254 *||18 Mar 1999||6 Jun 2000||Augustine Medical, Inc.||Near hyperthermic heater wound covering|
|US6093160 *||11 Apr 1997||25 Jul 2000||Augustine Medical, Inc.||Flexible non-contact wound treatment device|
|US6110197 *||11 Apr 1997||29 Aug 2000||Augustine Medical, Inc.||Flexible non-contact wound treatment device with a single joint|
|US6113561 *||18 Mar 1999||5 Sep 2000||Augustine Medical, Inc.||Normothermic tissue heating wound covering|
|US6179804||18 Aug 1999||30 Jan 2001||Oxypatch, Llc||Treatment apparatus for wounds|
|US6213966||27 Jan 2000||10 Apr 2001||Augustine Medical, Inc.||Normothermic tissue heating wound covering|
|US6217535||27 Jan 2000||17 Apr 2001||Augustine Medical, Inc.||Normothermic heater wound covering|
|US6241697||4 Oct 1999||5 Jun 2001||Augustine Medical, Inc.||Wound covering|
|US6241698||27 Jan 2000||5 Jun 2001||Augustine Medical, Inc.||Near hyperthermic heater wound covering|
|US6248084||4 Nov 1999||19 Jun 2001||Augustine Medical, Inc.||Wound treatment device|
|US6264622||9 Mar 1999||24 Jul 2001||Augustine Medical, Inc.||Normothermic heater wound covering|
|US6267740||29 Feb 2000||31 Jul 2001||Augustine Medical, Inc.||Flexible non-contact wound treatment device with a single joint|
|US6293917||4 Nov 1999||25 Sep 2001||Augustine Medical, Inc.||Wound treatment device for attachment to skin|
|US6406448||26 Dec 2000||18 Jun 2002||Augustine Medical, Inc.||Normothermic heater covering for tissue treatment|
|US6407307||29 Jan 2001||18 Jun 2002||Augustine Medical, Inc.||Near hyperthermic heater covering|
|US6419651||29 Jan 2001||16 Jul 2002||Augustine Medical, Inc.||Normothermic heater covering|
|US6423018||7 Feb 2001||23 Jul 2002||Augustine Medical, Inc.||Normothermic tissue heating wound covering|
|US6458109||5 Aug 1999||1 Oct 2002||Hill-Rom Services, Inc.||Wound treatment apparatus|
|US6465708||29 Jan 2001||15 Oct 2002||Augustine Medical, Inc.||Covering|
|US6468295||23 Mar 2001||22 Oct 2002||Augustine Medical, Inc.||Treatment device|
|US6513529 *||24 Sep 1999||4 Feb 2003||Deka Products Limited Partnership||Repulsive antiseptic surgical shield|
|US6572594||29 Jan 2001||3 Jun 2003||R.S. Medical Equipment Llc||Skin treatment using neuromuscular stimulation and a treatment gas containing medicine|
|US6580012||11 Apr 2000||17 Jun 2003||Augustine Medical, Inc.||Flexible non-contact wound treatment device|
|US6605051||31 May 2002||12 Aug 2003||Augustine Medical, Inc.||Near hyperthermic tissue treatment|
|US6685681 *||29 Nov 2000||3 Feb 2004||Hill-Rom Services, Inc.||Vacuum therapy and cleansing dressing for wounds|
|US6752794||27 Nov 2001||22 Jun 2004||Hill-Rom Services, Inc.||Vacuum therapy and cleansing dressing for wounds|
|US6755807||29 Nov 2000||29 Jun 2004||Hill-Rom Services, Inc.||Wound treatment apparatus|
|US6800074||29 Nov 2000||5 Oct 2004||Hill-Rom Services, Inc.||Wound treatment apparatus|
|US6840915||28 May 2002||11 Jan 2005||Arizant Healthcare Inc.||Normothermic tissue treatment|
|US6855135||13 May 2002||15 Feb 2005||Hill-Rom Services, Inc.||Vacuum therapy and cleansing dressing for wounds|
|US6921374||18 Jul 2002||26 Jul 2005||Arizant Healthcare Inc.||Tissue treatment by normothermic heating|
|US6928235 *||27 Aug 2001||9 Aug 2005||Shirley Pollack||Forced air dryer for infant's bottom|
|US6979324||13 Sep 2002||27 Dec 2005||Neogen Technologies, Inc.||Closed wound drainage system|
|US6987209||8 Nov 2002||17 Jan 2006||Arizant Healthcare Inc.||Flexible non-contact wound treatment device|
|US7014630||18 Feb 2004||21 Mar 2006||Oxyband Technologies, Inc.||Tissue dressing having gas reservoir|
|US7022113||11 Jul 2002||4 Apr 2006||Hill-Rom Services, Inc.||Control of vacuum level rate of change|
|US7122046||24 Sep 2002||17 Oct 2006||Arizant Technologies Llc||Treatment device|
|US7195624||20 Dec 2002||27 Mar 2007||Hill-Rom Services, Inc.||Vented vacuum bandage with irrigation for wound healing and method|
|US7198046||19 Feb 1998||3 Apr 2007||Wake Forest University Health Sciences||Wound treatment employing reduced pressure|
|US7216651||23 May 2001||15 May 2007||Wake Forest University Health Sciences||Wound treatment employing reduced pressure|
|US7252089 *||17 Oct 2005||7 Aug 2007||Bernardo Birnbaum||Surgical laminar air flow apparatus and method|
|US7263814||15 Jul 2005||4 Sep 2007||Oxyband Technologies, Inc.||Method and apparatus for supplying gas to an area|
|US7276051||6 Aug 1999||2 Oct 2007||Hill-Rom Services, Inc.||Wound treatment apparatus|
|US7338482||20 Dec 2002||4 Mar 2008||Hill-Rom Services, Inc.||External catheter access to vacuum bandage|
|US7520872||30 Jul 2004||21 Apr 2009||Neogen Technologies, Inc.||Closed wound drainage system|
|US7532953||7 Sep 2007||12 May 2009||Innovative Therapies, Inc.||Wound irrigation device|
|US7534927||20 Dec 2002||19 May 2009||Hill-Rom Services, Inc.||Vacuum bandage packing|
|US7608066||9 Feb 2006||27 Oct 2009||Innovative Therapies, Inc.||Wound irrigation device pressure monitoring and control system|
|US7678090||24 Nov 2004||16 Mar 2010||Risk Jr James R||Wound treatment apparatus|
|US7708724||4 Apr 2005||4 May 2010||Blue Sky Medical Group Incorporated||Reduced pressure wound cupping treatment system|
|US7723560||20 Dec 2002||25 May 2010||Lockwood Jeffrey S||Wound vacuum therapy dressing kit|
|US7731702||21 Jul 2005||8 Jun 2010||Neogen Technologies, Inc.||Closed wound drainage system|
|US7763000||6 Jul 2004||27 Jul 2010||Risk Jr James R||Wound treatment apparatus having a display|
|US7776028||31 Mar 2005||17 Aug 2010||Bluesky Medical Group Incorporated||Adjustable overlay reduced pressure wound treatment system|
|US7794438||14 Sep 2010||Alan Wayne Henley||Wound treatment apparatus|
|US7815616||16 Sep 2003||19 Oct 2010||Boehringer Technologies, L.P.||Device for treating a wound|
|US7837673||29 Sep 2005||23 Nov 2010||Innovative Therapies, Inc.||Wound irrigation device|
|US7846141||28 Aug 2003||7 Dec 2010||Bluesky Medical Group Incorporated||Reduced pressure treatment system|
|US7867206||19 Sep 2003||11 Jan 2011||Kci Licensing, Inc.||Vacuum therapy and cleansing dressing for wounds|
|US7896856||20 Dec 2002||1 Mar 2011||Robert Petrosenko||Wound packing for preventing wound closure|
|US7896864||12 Mar 2007||1 Mar 2011||Lockwood Jeffrey S||Vented vacuum bandage with irrigation for wound healing and method|
|US7909805||22 Mar 2011||Bluesky Medical Group Incorporated||Flexible reduced pressure treatment appliance|
|US7910791||15 May 2001||22 Mar 2011||Coffey Arthur C||Combination SIS and vacuum bandage and method|
|US7927318||20 Sep 2005||19 Apr 2011||Risk Jr James Robert||Waste container for negative pressure therapy|
|US7928281||9 Oct 2007||19 Apr 2011||Arizant Technologies Llc||Wound covering|
|US7931651||30 Mar 2007||26 Apr 2011||Wake Lake University Health Sciences||External fixation assembly and method of use|
|US7942866||27 Aug 2004||17 May 2011||Boehringer Technologies, L.P.||Device for treating a wound|
|US7981098||18 Sep 2008||19 Jul 2011||Boehringer Technologies, L.P.||System for suction-assisted wound healing|
|US7988680||4 Feb 2005||2 Aug 2011||Kci Medical Resources||Vacuum therapy and cleansing dressing for wounds|
|US7998125||19 May 2005||16 Aug 2011||Bluesky Medical Group Incorporated||Hypobaric chamber treatment system|
|US8021348||5 Sep 2006||20 Sep 2011||Kci Medical Resources||Wound treatment apparatus|
|US8034038||13 Mar 2009||11 Oct 2011||Neogen Technologies, Inc.||Closed wound drainage system|
|US8062272||24 Feb 2005||22 Nov 2011||Bluesky Medical Group Incorporated||Flexible reduced pressure treatment appliance|
|US8062273||6 Dec 2010||22 Nov 2011||Bluesky Medical Group Incorporated||Reduced pressure treatment system|
|US8066243||8 Jan 2010||29 Nov 2011||Richard C. Vogel||Adapter for portable negative pressure wound therapy device|
|US8083712||20 Mar 2007||27 Dec 2011||Neogen Technologies, Inc.||Flat-hose assembly for wound drainage system|
|US8100887||8 Mar 2005||24 Jan 2012||Bluesky Medical Group Incorporated||Enclosure-based reduced pressure treatment system|
|US8118794||2 Nov 2010||21 Feb 2012||Bluesky Medical Group, Inc.||Reduced pressure treatment system|
|US8142405||17 Oct 2008||27 Mar 2012||Vogel Richard C||Wound irrigation device pressure monitoring and control system|
|US8168848||20 Dec 2002||1 May 2012||KCI Medical Resources, Inc.||Access openings in vacuum bandage|
|US8227657||15 Oct 2010||24 Jul 2012||Aalnex, Inc.||Wound shield|
|US8246592||13 Nov 2009||21 Aug 2012||Kci Medical Resources||Vacuum therapy and cleansing dressing for wounds|
|US8252971||16 Jul 2009||28 Aug 2012||Aalnex, Inc.||Systems and methods for protecting incisions|
|US8267960||9 Jan 2009||18 Sep 2012||Wake Forest University Health Sciences||Device and method for treating central nervous system pathology|
|US8282611||17 Mar 2010||9 Oct 2012||Bluesky Medical Group, Inc.||Reduced pressure wound treatment system|
|US8303552||8 Mar 2010||6 Nov 2012||Bluesky Medical Group, Inc.||Reduced pressure wound treatment system|
|US8350116||4 Dec 2008||8 Jan 2013||Kci Medical Resources||Vacuum bandage packing|
|US8362315||26 May 2010||29 Jan 2013||Aalnex, Inc.||Dressing substrate|
|US8377016||10 Jan 2007||19 Feb 2013||Wake Forest University Health Sciences||Apparatus and method for wound treatment employing periodic sub-atmospheric pressure|
|US8398614||1 Apr 2009||19 Mar 2013||Smith & Nephew Plc||Apparatus for aspirating, irrigating and cleansing wounds|
|US8409129||1 May 2009||2 Apr 2013||Nimbic Systems, Inc.||Apparatus for reducing contamination of surgical site|
|US8415523||25 Jun 2010||9 Apr 2013||Aalnex, Inc.||Secondary wound dressings for securing primary dressings and managing fluid from wounds, and methods of using same|
|US8444613||2 Dec 2009||21 May 2013||Richard Vogel||Pump leak monitor for negative pressure wound therapy|
|US8449509||28 May 2013||Bluesky Medical Group Incorporated||Flexible reduced pressure treatment appliance|
|US8454603||4 Jun 2013||Wake Forest University Health Sciences||External fixation assembly and method of use|
|US8460255||18 Nov 2009||11 Jun 2013||Kalypto Medical, Inc.||Device and method for wound therapy|
|US8540687||20 Aug 2010||24 Sep 2013||Kci Licensing, Inc.||Wound treatment apparatus|
|US8540699||13 Aug 2010||24 Sep 2013||Bluesky Medical Group Incorporated||Reduced pressure wound treatment system|
|US8545464||23 Apr 2012||1 Oct 2013||Bluesky Medical Group Incorporated||Reduced pressure treatment system|
|US8558050||10 Sep 2009||15 Oct 2013||Aalnex, Inc.||Wound shield with enclosed vacuum space|
|US8569566||22 Nov 2011||29 Oct 2013||Smith & Nephew, Plc||Wound cleansing apparatus in-situ|
|US8586818||15 Dec 2005||19 Nov 2013||Aalnex, Inc.||Wound shield|
|US8628505||22 Nov 2011||14 Jan 2014||Bluesky Medical Group Incorporated||Reduced pressure treatment system|
|US8663198||16 Apr 2010||4 Mar 2014||Kalypto Medical, Inc.||Negative pressure wound therapy device|
|US8669408||20 Jul 2012||11 Mar 2014||Aalnex, Inc.||Wound shield|
|US8708985||21 Apr 2011||29 Apr 2014||Nascent Surgical, Llc||Systems and methods for evacuating materials at a surgical site|
|US8708998||7 Apr 2009||29 Apr 2014||Bluesky Medical Group, Inc.||Enclosure-based reduced pressure treatment system|
|US8715256||20 Nov 2008||6 May 2014||Smith & Nephew Plc||Vacuum assisted wound dressing|
|US8722960||7 Dec 2012||13 May 2014||Aalnex, Inc.||Systems and methods for wound protection and exudate management|
|US8722961 *||1 Apr 2005||13 May 2014||Inotec and Limited||Hyperbaric dressing|
|US8747887||3 Oct 2005||10 Jun 2014||Kci Medical Resources||Combination SIS and vacuum bandage and method|
|US8764794||18 Sep 2012||1 Jul 2014||Wake Forest University Health Sciences||Device and method for treating central nervous system pathology|
|US8772567||19 Aug 2011||8 Jul 2014||Paul Hartmann Ag||Use of a polyurethane foam as a wound dressing in negative pressure therapy|
|US8795243||8 Mar 2010||5 Aug 2014||Bluesky Medical Group Incorporated||Flexible reduced pressure treatment appliance|
|US8829263||30 May 2012||9 Sep 2014||Smith & Nephew, Inc.||Self contained wound dressing with micropump|
|US8834451||31 Jan 2012||16 Sep 2014||Smith & Nephew Plc||In-situ wound cleansing apparatus|
|US8834520||9 Oct 2008||16 Sep 2014||Wake Forest University||Devices and methods for treating spinal cord tissue|
|US8926592||7 Jul 2010||6 Jan 2015||Smith & Nephew Plc||Wound cleansing apparatus with heat|
|US8945074||28 Sep 2011||3 Feb 2015||Kalypto Medical, Inc.||Device with controller and pump modules for providing negative pressure for wound therapy|
|US9050136||17 May 2013||9 Jun 2015||Wake Forest University Health Sciences||External fixation assembly and method of use|
|US9058634||18 Nov 2011||16 Jun 2015||Kalypto Medical, Inc.||Method for providing a negative pressure wound therapy pump device|
|US9067003||18 Nov 2011||30 Jun 2015||Kalypto Medical, Inc.||Method for providing negative pressure to a negative pressure wound therapy bandage|
|US9101727||15 Mar 2013||11 Aug 2015||Nimbic Systems, Inc.||Method for reducing contamination of surgical site|
|US9131927||16 Jul 2009||15 Sep 2015||Wake Forest University Health Sciences||Apparatus and method for cardiac tissue modulation by topical application of vacuum to minimize cell death and damage|
|US20040260253 *||18 Feb 2004||23 Dec 2004||Rosati Coni F.||Method and apparatus for supplying gas to an area|
|US20050101940 *||27 Aug 2004||12 May 2005||Radl Christopher L.||Device for treating a wound|
|US20050251084 *||15 Jul 2005||10 Nov 2005||Rosati Coni F||Method and apparatus for supplying gas to an area|
|US20060022504 *||26 Jul 2005||2 Feb 2006||Johnson Timothy A||Air fluidized granular wound care wheelchair overlay|
|US20060200100 *||16 Feb 2006||7 Sep 2006||Rosati Coni F||Method and apparatus for supplying gas to an area|
|US20060213527 *||25 May 2006||28 Sep 2006||Argenta Louis C||Wound treatment employing reduced pressure|
|US20070032762 *||29 Sep 2005||8 Feb 2007||Vogel Richard C||Wound irrigation device|
|US20070032763 *||9 Feb 2006||8 Feb 2007||Vogel Richard C||Wound irrigation device pressure monitoring and control system|
|DE102010034819A1 *||19 Aug 2010||23 Feb 2012||Paul Hartmann Ag||Verwendung eines Polyurethanschaumstoffs als Wundauflage in der Unterdrucktherapie|
|EP1986584A2 *||13 Feb 2007||5 Nov 2008||Adel Aali||Wound shield|
|WO1983001388A1 *||11 Oct 1982||28 Apr 1983||Frese Nielsen||Device for treatment of wounds in body tissue of patients by exposure to jets of gas|
|WO1989011885A1 *||30 May 1989||14 Dec 1989||Laser Technologies Group Inc||End effector for surgical plume evacuator|
|WO1994000090A2 *||18 Jun 1993||6 Jan 1994||Scott D Augustine||Wound covering|
|U.S. Classification||604/23, 604/312, 128/847, 604/289|
|International Classification||A61F13/15, A61F13/00|
|Cooperative Classification||A61F2013/00165, A61F2013/00519, A61F2013/00157, A61F2013/0074, A61F2013/530802, A61F2013/00174, A61F2013/00255, A61F2013/00412, A61F2013/0017, A61F13/00068, A61F2013/51409, A61F2013/00863|