US20140343520A1 - Integrated Negative Pressure Bandages - Google Patents
Integrated Negative Pressure Bandages Download PDFInfo
- Publication number
- US20140343520A1 US20140343520A1 US14/447,579 US201414447579A US2014343520A1 US 20140343520 A1 US20140343520 A1 US 20140343520A1 US 201414447579 A US201414447579 A US 201414447579A US 2014343520 A1 US2014343520 A1 US 2014343520A1
- Authority
- US
- United States
- Prior art keywords
- wound
- negative pressure
- pad
- bandage
- film cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 239000012530 fluid Substances 0.000 claims abstract description 42
- 239000011159 matrix material Substances 0.000 claims abstract description 36
- 210000000416 exudates and transudate Anatomy 0.000 claims abstract description 30
- 229920000642 polymer Polymers 0.000 claims abstract description 29
- 239000000853 adhesive Substances 0.000 claims abstract description 15
- 230000001070 adhesive effect Effects 0.000 claims abstract description 15
- 239000012790 adhesive layer Substances 0.000 claims abstract 23
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims description 22
- 229910001961 silver nitrate Inorganic materials 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 7
- 229920006254 polymer film Polymers 0.000 claims 11
- 230000002093 peripheral effect Effects 0.000 claims 9
- 239000010410 layer Substances 0.000 claims 6
- 229920006264 polyurethane film Polymers 0.000 abstract description 15
- 229920002635 polyurethane Polymers 0.000 abstract description 6
- 239000004814 polyurethane Substances 0.000 abstract description 6
- 206010052428 Wound Diseases 0.000 description 62
- 208000027418 Wounds and injury Diseases 0.000 description 60
- 210000002683 foot Anatomy 0.000 description 29
- 238000002560 therapeutic procedure Methods 0.000 description 14
- 210000003371 toe Anatomy 0.000 description 12
- 238000009581 negative-pressure wound therapy Methods 0.000 description 11
- 239000007788 liquid Substances 0.000 description 7
- 210000003423 ankle Anatomy 0.000 description 5
- 230000035876 healing Effects 0.000 description 5
- 210000000954 sacrococcygeal region Anatomy 0.000 description 5
- 230000014759 maintenance of location Effects 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 210000001124 body fluid Anatomy 0.000 description 2
- 239000010839 body fluid Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 210000003414 extremity Anatomy 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 210000000474 heel Anatomy 0.000 description 2
- 208000015181 infectious disease Diseases 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 244000309466 calf Species 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/05—Bandages or dressings; Absorbent pads specially adapted for use with sub-pressure or over-pressure therapy, wound drainage or wound irrigation, e.g. for use with negative-pressure wound therapy [NPWT]
-
- A61F13/00068—
-
- A61M1/0088—
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
- A61M1/91—Suction aspects of the dressing
- A61M1/915—Constructional details of the pressure distribution manifold
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F2013/00089—Wound bandages
- A61F2013/0017—Wound bandages possibility of applying fluid
- A61F2013/00174—Wound bandages possibility of applying fluid possibility of applying pressure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F2013/00361—Plasters
- A61F2013/00365—Plasters use
- A61F2013/00412—Plasters use for use with needles, tubes or catheters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F2013/00361—Plasters
- A61F2013/00365—Plasters use
- A61F2013/00536—Plasters use for draining or irrigating wounds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F2013/00361—Plasters
- A61F2013/00365—Plasters use
- A61F2013/0054—Plasters use for deep wounds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
- A61M1/91—Suction aspects of the dressing
- A61M1/912—Connectors between dressing and drainage tube
Definitions
- the present invention relates generally to negative pressure bandages operable to remove exudates and fluids from a wound and, more particularly, to a bandage structure that is specifically contoured to fit body parts that present difficulties in affixing and applying negative pressure bandages.
- Negative pressure therapy has been utilized for the treatment of a variety of wounds by medical practitioners.
- Conventional negative pressure bandages are generally large in size and often require the use of complicated equipment such as suction pumps, vacuum pumps and complex electronic controllers to apply a negative pressure within the bandage to draw exudates and fluids away from the wound to a remote collection container.
- negative pressure therapy involves other associated equipment, such as the exudates/fluid collection canisters, liquid transporting conduits, and pressure regulators/transducers/sensors.
- negative pressure bandages and related equipment tends to be bulky and relatively costly.
- Such complexity typically requires professional placement of the bandage and connection to the pump and collection canister, followed by consistent, regular patient supervision and monitoring.
- negative pressure bandages are applied for approximately two days, at which time the bandage must be removed and replaced by professional technicians.
- the foam pad can be utilized as a storage reservoir by incorporating a hydrophobic filter at the connector to prevent the fluids from leaving the bandage, as is reflected below in greater detail.
- Negative pressure therapy is provided commercially by at least KCI, Smith & Nephew, Kalypto, Medela, Mepilex and Convatec. An earlier negative pressure wound therapy embodiment is disclosed in U.S. Pat. No. 4,969,880, issued to David S. Zamierowski on Nov. 13, 1990.
- a negative pressure bandage in which the bandage has a housing that is sealed to the body surface of the patient and defines a liquid retention chamber coupled to a vacuum source to apply a negative pressure on the liquid retention chamber so that the exudates and fluids are drawn into an absorptive material within the liquid retention chamber.
- This liquid retention chamber is located adjacent to the wound from which the exudates and fluids are removed.
- a negative pressure bandage is integrated into a single applicable bandage that can provide negative pressure wound therapy.
- the integrated bandage is not inserted into the surface of the wound, but is positioned over top of the wound, to provide negative pressure wound therapy.
- the integrated bandage structure provides a non-woven polyurethane matrix mesh impregnated with silver nitrate to overlie the wound being treated.
- the silver nitrate mesh inhibits infection and promotes healing of the wound.
- the integrated bandage structure also includes a drain tube disposed within the non-woven polyurethane matrix for connection to a source of negative pressure to withdraw the exudates and fluids from the wound to a remote canister for collection thereof.
- the non-woven matrix does not absorb the fluids and exudates, but allows the collection thereof into the drain tube for removal from the bandage and from the wound site.
- contoured negative pressure bandages are configured to provide a seal around a wound found on certain difficult to fit portions of the human body.
- the contoured negative pressure bandage for application to the heel of a patient's foot is formed with junctions, such as cutouts, to facilitate the sealing of the bandage around the heel.
- drain tube and associated connector can be oriented diagonally to the primary axes of the bandage to position the connector for attaching the vacuum source to the drain tube in an easily accessible and unobtrusive location.
- an integrated negative pressure bandage having a non-woven polyurethane matrix pad secured on the outside surface to a sheet of polyurethane film formed with an outer adhesive boundary to establish a seal against the skin of the patient around the wound site.
- the inner surface of the non-woven matrix pad is covered with a silver nitrate mesh to promote healing of the wound site when the bandage is placed on top of the wound.
- a drain tube is contained within the non-woven matrix pad for connection with a source of negative pressure to draw the fluids and exudates from the wound for removal to a canister that is located remotely from the bandage.
- Contoured versions of the integrated bandage are provided for use on portions of the human body that present difficult locations for applications of negative pressure therapy, including the toes, heel, limbs, and sacral region.
- FIG. 1 is a perspective view of an integrated negative pressure bandage incorporating the principles of the instant invention, the bandage of FIG. 1 being shaped for utilization for injuries or wounds to generally planar portions of the body;
- FIG. 2 is a side perspective view of the integrated negative pressure bandage shown in FIG. 1 ;
- FIG. 3 is a cross-sectional view of the integrated negative pressure bandage corresponding to lines 3 - 3 of FIG. 2 ;
- FIG. 4 is a top plan view of an integrated bandage similar to that of FIG. 1 , but having a circular shape;
- FIG. 5 is a cross-sectional view of the integrated bandage corresponding to lines 5 - 5 of FIG. 4 ;
- FIG. 6 is an exploded view of a different embodiment of the integrated negative pressure bandage similar to that shown in FIGS. 1 and 4 ;
- FIG. 7 is an upper perspective view of a first embodiment of a drain tube and connector utilized in the planar bandage shown in FIG. 1 ;
- FIG. 8 is a side elevational view of the drain tube and connector shown in FIG. 7 ;
- FIG. 9 is an upper perspective view of an alternate embodiment of a drain tube as shown in FIG. 7 ;
- FIG. 10 is a side elevational view of the drain tube shown in FIG. 9 ;
- FIG. 11 is a top plan view of a first embodiment of a contoured negative pressure bandage incorporating the principles of the instant invention for a patient's foot, shown in an opened configuration in which the bandage would be shipped to the patient, the release members not being shown for purposes of clarity;
- FIG. 12 is a side elevational view of the contoured negative pressure bandage for a foot as shown in FIG. 11 , the release members not being shown for purposes of clarity;
- FIG. 13 is a perspective view of the contoured negative pressure bandage as shown in FIG. 11 folded over the toes on the foot of a representative patient;
- FIG. 14 is a top plan view of a second embodiment of the contoured negative pressure bandage for a patient's foot, the release members not being shown for purposes of clarity;
- FIG. 15 is a top plan view of a third embodiment of the contoured negative pressure bandage for a foot, the bandage being shown in an unfolded configuration corresponding to the configuration in which the bandage would be shipped to the patient for subsequent use, the release members not being shown for purposes of clarity;
- FIG. 16 is a perspective view of a wedge member for use in conjunction with the contoured negative pressure bandage shown in FIGS. 12-16 ;
- FIG. 17 is a top plan view of a contoured negative pressure bandage for use with a patient's heel;
- FIG. 18 is a bottom plan view of the contoured negative pressure bandage for heels as shown in FIG. 17 , the release members not being shown for purposes of clarity;
- FIG. 19 is an exploded view of the contoured negative pressure bandage for heels as shown in FIG. 17 ;
- FIG. 20 is a side elevational view of the contoured negative pressure bandage for heels
- FIG. 21 is a top plan view of an alternative embodiment of the contoured negative pressure bandage for heels, similar to that shown in FIG. 17 ;
- FIG. 22 is a top plan view of the contoured negative pressure bandage for use on the sacral region of a patient.
- FIG. 23 is a perspective view of the contoured negative pressure bandage shown in FIG. 22 .
- FIGS. 1-6 integrated negative pressure bandages incorporating the principles of the instant invention can best be seen.
- the scale of the components of the negative pressure bandages is exaggerated to shown the details of the components.
- the wound contact member depicted in each of the drawings is enlarged to shown the configuration thereof.
- the thicknesses and relative sizes of other components may also be distorted to show the invention.
- Specific contoured configurations of the integrated negative pressure bandages are depicted in FIGS. 12-23 .
- Each of the bandages have an outer shaped cover formed from a liquid impermeable material, such as polyurethane film, that can be formed into the specific shape required for the bandage configuration, yet provide sufficient flexibility to allow attachment of the bandage to the skin surrounding the injury being treated.
- the outer cover is provided with an area of adhesive around a perimeter portion of the bandage where the cover would be engaged with the skin around the wound being treated to create a seal between the perimeter of the bandage and the skin.
- a protective release film would be applied to the adhesive portion until the bandage is to be applied to a patient, substantially covering the entire inner surface of the bandage.
- each of the bandages will have a wound contact member secured to the outer film cover to be positioned between the cover and the body part being treated.
- this wound contact member can be formed from gauze padding covered by a mesh layer, preferably a polyethylene mesh impregnated with silver nitrate, the wound contact member is preferably formed with a permeable polymer matrix layer, more specifically a non-woven polyurethane matrix pad is preferred, that will allow the passage of liquids through the pad to keep the surface of the wound contact member against the wound site as dry as possible.
- a drain tube connected to an external connector to apply a negative pressure to the bandage that will draw the fluids and exudates from the wound being treated.
- the surface of the wound contact member which is in direct contact with the wound being treated, is provided with a mesh layer, preferably a polyethylene mesh impregnated with silver nitrate, to protect the wound and promote healing.
- a mesh layer preferably a polyethylene mesh impregnated with silver nitrate
- the bandage 10 is formed with a non-woven polymer matrix pad 15 covered on an inside surface by a polyethylene mesh layer 12 that serves as a wicking function to draw fluids into the pad 15 and keeps the pad 15 from engaging the surface of the wound when the bandage 10 is applied.
- the mesh layer incorporates a coating of, or is impregnated with, a compound of silver nitrate to promote healing and inhibit infection.
- the outer surface of the non-woven polymer pad 15 is attached to a polyurethane film 13 formed with an adhesive covered perimeter portion 14 .
- a drain tube 20 is positioned within the pad 15 and exits the bandage 10 through an opening within the polyurethane film 13 to terminate in a connector 22 adapted for connection to a conduit leading to a vacuum source (not shown) and an associated canister reservoir (not shown).
- a seal pad 23 can be provided at the opening through the polyurethane film 13 for engagement with the connector 22 to enhance the seal of the bandage 10 when applied to a patient.
- the polyurethane film 13 can be formed with an inner transparent film member 13 a and an outer opaque, or skin colored, film member 13 b .
- the adhesive-covered surface of the polyurethane film member 13 a is preferably covered by a release member 16 that is removed from the bandage 10 when the bandage is to be applied to the patient to expose the adhesive boundary 14 for attachment to the patient's skin around the wound site. More preferably, the release member 16 covers the entire inside surface of the bandage 10 before being removed and can be formed as overlapping members 16 a and 16 b .
- the outer film member 13 b is preferably constructed from non-woven polyurethane to provide a covering that has a look somewhat like human skin.
- FIGS. 7-10 The general configuration of the drain tube 20 and connector 22 utilized in each of the bandages described above and below, is shown generically in FIGS. 7-10 .
- the drain tube 20 can be shaped specifically to conform to any particular shape or configuration of the bandage 10 ; however, FIGS. 7-10 depict the drain tube 20 as having a linear configuration.
- the length and width of the drain tube 20 is also dependent on the size and shape of the specific bandage 10 .
- the connector 22 is of a conventional size and shape for connection to tubing that would interconnect the connector 22 with a vacuum pump (not shown).
- the drain tube 20 in the first embodiment depicted in FIGS. 7 and 8 is formed from a pair of opposing, relatively flat body fluid collection members 24 that are formed with slotted openings 26 in the top and bottom surfaces thereof to collect fluids and exudates from the wound through the wound contact member 15 .
- the opposing fluid collection members 24 are connected to a central collector member 27 that forms a “T” connection with the external connector 22 so that the negative pressure applied to the connector 22 extracts the fluids and exudates from the fluid collection members 24 through the central collector member 27 and out through the connector 22 to an storage device (not shown).
- FIGS. 9 and 10 A second embodiment of the drain tube 20 is depicted in FIGS. 9 and 10 as a single tube configuration.
- the single flat body fluid collection member 24 is connected at one end thereof to the connector 22 which can pass through the seal pad 23 , and also through the polyurethane film 13 , for connection with the vacuum source (not shown).
- the flat fluid collection member 24 is formed with openings 26 in the top and bottom surfaces.
- the sides of the fluid collection member 24 can also be formed with openings 26 and those openings 26 can be in any shape from oval to circular, or other geometric shapes.
- FIGS. 11-13 A first embodiment of a contoured integrated negative pressure bandage 30 is shown in FIGS. 11-13 , configured for use with the patient's toes.
- this contoured bandage 30 is formed with an outer polyurethane film cover 13 formed with an outer adhesive boundary 14 located to the exterior of the mesh 12 which covers the non-woven polymer matrix pad 15 .
- the drain tube 20 is positioned at one end of the pad 15 such that the fluid collection member 24 extends substantially to the opposing end of the pad 15 .
- a second embodiment of the foot bandage 32 is shown in which the drain tube 20 is oriented diagonally across the pad 15 such that the connector 22 is positioned to one side of the bandage 30 .
- the bandage 30 is wrapped around the ends of the patient's toes in a manner where the pad 15 is located both above the patient's foot and below the patient's foot.
- the drain tube 20 is sufficiently flexible to allow the associated bend in the bandage 30 such that the fluid collection member 24 is also located above and below the patient's foot.
- the connector 22 is oriented over the top of the foot for connection to the vacuum pump (not shown). When the second embodiment of the bandage 32 is applied, the connector 22 is located at the top of the patient's foot, but to one side of the foot.
- FIG. 15 Yet a third embodiment of the contoured negative pressure bandage 35 configured for application to a patient's foot is shown in FIG. 15 .
- the non-woven polymer matrix pad 15 is formed smaller than the first embodiment shown in FIGS. 11 and 14 , and preferably in a semi-circular shape.
- the pad 15 is located at one end of the polyurethane film cover 13 , terminating at a center fold line 28 so that the opposing half of the film cover 13 is devoid of a pad 15 . Furthermore, most of the opposing half of the film cover 13 can be covered with a layer of adhesive 14 .
- the third embodiment of the foot bandage 35 is applied so that the pad 15 covers the open wound.
- the opposing half of the film cover 13 is wrapped over the ends of the toes and sealed against the top of the foot. Since the drain tube 20 is oriented diagonally, the connector 22 will project from one side of the bandage 35 to be connected to the vacuum pump (not shown). The ends of the patient's toes should be positioned proximate to the middle of the pad 15 so that the fold line 28 is spaced from the ends of the patient's toes.
- the adhesive areas 14 on the opposing side of the film cover 13 and around the pad 15 and seal against each other and against the patient's foot to provide a seal around the pad 15 for the application of negative pressure therapy.
- a wedge member 29 is schematically shown.
- the wedge member 29 is rectangular in shape, but could be formed in a triangular or wedge shape as well.
- the purpose of the wedge member 29 is to separate the patient's toes prior to application of the bandage 30 , 32 or 25 to the patient's foot. Often the open would on a patient's foot, whether on top or on the bottom of the foot, will extend between the patient's toes. Separating the toes adjacent the open wound with a wedge member 29 will increase the effectiveness of the negative pressure therapy.
- the heel bandage 40 has a shaped polyurethane film cover 13 on the outside surface of a non-woven polymer matrix pad 15 that has a silver nitrate mesh 12 on the inside surface.
- the polyurethane film cover 13 has a particular shape configured to be applied to the patient's heel.
- the film cover 13 has an upper rounded portion 42 surrounding an upper portion 46 of the pad 15 where the connector 22 is located.
- the lower portion 43 of the film cover 13 is formed with three flaps 44 projecting outwardly from the lower portion 47 of the pad 15 .
- the flaps 44 are separated by junctions 45 that provide flexibility in the application of the adhesive covered flaps 44 to the patient's skin.
- the junctions 45 between the flaps 44 can be formed as cutouts 45 , as is shown in FIGS. 17 and 18 , or as a web 45 a , as is depicted in FIG. 21 .
- the drain tube 20 in the first embodiment of the heel bandage 40 is oriented along the major vertical axis of the bandage 40 .
- the heel bandage 40 is positioned so that the lower portion 47 covers the open wound and the fluids and exudates can be evacuated from the wound via the drain tube 20 .
- the rounded upper portion of the film cover 13 is easily applied to the lower part of the patient's calf irrespective of the orientation of the heel bandage 40 to the patient.
- the lower portion 43 of the film cover 13 is typically applied to the patient's ankle, which is much more difficult to obtain a seal.
- the junctions 45 between the flaps 44 allow the flaps 44 to be oriented as needed to obtain a seal against the patient's ankle area. Furthermore, the junctions 45 provide a place where the medical service provider can tear the film cover 13 if further modifications become necessary. In FIG.
- a second embodiment of the heel bandage 49 is depicted.
- the component parts are formed as described above, except for the orientation of the drain tube 20 , which is positioned diagonally across the pad 15 so that the connector 22 exits the polyurethane film cover member 13 at one side thereof.
- the junctions are depicted as perforated webs 45 a between the flaps 44 to allow selective tearing of the webs 45 a to accomplish the folding of the flaps 44 and the sealing of the bandage 10 .
- the heel bandage 40 is applied with the lower portion 47 of the pad 15 located under the foot against the open wound.
- the upper portion of the film cover 13 can be secured against the back portion of the patient's leg and the flaps 44 can be wrapped around the sides of the foot and along the sole.
- the connector 22 will be oriented vertically in back of the leg. If the wound is in the rear part of the heel, the lower part 47 of the pad 15 is positioned over the wound while the flaps 44 are wrapped around the sides of the ankle and underneath the heel. If the wound is on the ankle along the side of the foot, the lower part 47 of the pad 15 is placed over the wound with the upper portion 42 of the film cover 13 being oriented along the side of the leg.
- the flaps 44 can then be secured to the inside of the foot, behind the heel, and underneath the foot.
- the junctions 45 in each of the scenarios noted above enable the three respective flaps 44 to be secured against the patient's foot in different planes and in different orientations.
- FIGS. 22 and 23 An integrated negative pressure bandage 50 contoured to be applied to the sacral region of the patient is shown in FIGS. 22 and 23 .
- the sacral bandage 50 is formed with a non-woven polymer matrix pad 15 having affixed to the outside surface thereof a polyurethane film cover 13 and to the inner surface thereof a mesh 12 impregnated with silver nitrate.
- the drain tube 20 terminates in a connector 22 above the film cover 13 and includes a fluid collection member 24 embedded into the pad 15 .
- the bandage 50 is formed with a curved indent 52 , 53 at the top and at the bottom, respectively, to conform to the shape of the sacral region of the patient.
- the pad 15 is formed with a curved indent 54 at the top central portion thereof.
Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Vascular Medicine (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Anesthesiology (AREA)
- Hematology (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Materials For Medical Uses (AREA)
Abstract
An integrated negative pressure bandage is constructed with a non-woven polyurethane matrix pad secured on the outside surface to a sheet of polyurethane film formed with an outer adhesive boundary to establish a seal against the skin of the patient around the wound site. The integrated negative pressure bandage is applied to a patient having said wound by removing said release member and attaching said adhesive layer exposed by the removal of said release member to said patient such that said adhesive layer is sealed to the patient around said wound with said non-woven polymer matrix pad being positioned over said wound, and attaching said connector port to said source of negative pressure. The non-woven pad does not stored fluids and exudate, but the source of negative pressure continuously removes the fluids and exudate to a remote location.
Description
- This application is a division of U.S. patent application Ser. No. 13/207,391, filed Aug. 10, 2011, and granted as U.S. Pat. No. 8,795,247 on Aug. 5, 2014, and claims domestic priority on U.S. Provisional Patent Application Ser. No. 61/373,233, filed on Aug. 12, 2010, the content of which is incorporated herein by reference in its entirety.
- The present invention relates generally to negative pressure bandages operable to remove exudates and fluids from a wound and, more particularly, to a bandage structure that is specifically contoured to fit body parts that present difficulties in affixing and applying negative pressure bandages.
- Negative pressure therapy has been utilized for the treatment of a variety of wounds by medical practitioners. Conventional negative pressure bandages are generally large in size and often require the use of complicated equipment such as suction pumps, vacuum pumps and complex electronic controllers to apply a negative pressure within the bandage to draw exudates and fluids away from the wound to a remote collection container. Typically, negative pressure therapy involves other associated equipment, such as the exudates/fluid collection canisters, liquid transporting conduits, and pressure regulators/transducers/sensors. As a result, negative pressure bandages and related equipment tends to be bulky and relatively costly. Such complexity typically requires professional placement of the bandage and connection to the pump and collection canister, followed by consistent, regular patient supervision and monitoring. Generally, negative pressure bandages are applied for approximately two days, at which time the bandage must be removed and replaced by professional technicians.
- The rising costs of healthcare and of medical devices, such as negative pressure bandages, provide incentive to develop less expensive equipment, and procedures that are more easily utilized to reduce the costs associated with the use of negative pressure therapy while improving on the effectiveness of the therapy. Simplification of the procedures and the equipment can allow in-home use of such therapies with a minimum of professional supervision and monitoring of the patients. Furthermore, patients continue to demand devices that are more easily portable to allow travel and mobility while utilizing the therapy.
- Conventional applications of negative pressure therapy to wound sites typically incurs the cutting of a porous foam pad to fit into the wound, followed by an application of an adhesive surgical drape over the pad and wound site to seal against the skin of the patient around the wound site. The fluids and exudates from the wound can be removed from the bandage to a remote location through an application of a vacuum to a connector fitted into the adhesive surgical drape, such as is shown in U.S. Pat. No. 5,636,643, granted on Jun. 10, 1997, in U.S. Pat. No. 5,645,081, granted on Jul. 8, 1997, and in U.S. Pat. No. 7,216,651, granted on May 15, 2007, all of which were issued to Louis Argenta. Alternatively, the foam pad can be utilized as a storage reservoir by incorporating a hydrophobic filter at the connector to prevent the fluids from leaving the bandage, as is reflected below in greater detail. Negative pressure therapy is provided commercially by at least KCI, Smith & Nephew, Kalypto, Medela, Mepilex and Convatec. An earlier negative pressure wound therapy embodiment is disclosed in U.S. Pat. No. 4,969,880, issued to David S. Zamierowski on Nov. 13, 1990.
- The application of conventional negative pressure bandages to certain parts of the body presents substantial difficulties in maintaining a seal against the skin around the wound. Without the negative pressure bandage being sealed against the skin of the patient, the negative pressure system will not operate. Certain body parts, such as heels, ankles and toes present a multi-faceted skin surface against which the negative pressure bandage must seal. Conventional practices with the negative pressure bandages, such as are described below, require the planar bandages to be cut, shaped and compromised with respect to the sealing portion of the bandage to fit against the contoured body part.
- In U.S. Pat. No. 7,615,036, granted to Ashok Joshi, et al on Nov. 10, 2009, a negative pressure bandage is disclosed in which the bandage has a housing that is sealed to the body surface of the patient and defines a liquid retention chamber coupled to a vacuum source to apply a negative pressure on the liquid retention chamber so that the exudates and fluids are drawn into an absorptive material within the liquid retention chamber. This liquid retention chamber is located adjacent to the wound from which the exudates and fluids are removed.
- Improvements to negative pressure wound therapy devices can be found in U.S. Patent Publication No. 2009/0299251 of John Buan published on Dec. 3, 2009, to enhance the sealing of the bandage to the body surface of the patient. In this negative pressure wound therapy device, a vacuum is applied to a collection chamber in which an absorptive pad is disposed to collect the exudates and fluids drawn away from the wound by the vacuum (negative pressure). To enhance the connection of the tubing extending between the vacuum pump and the negative pressure therapy device, an extended length connector is disclosed, which will accommodate connection when ace wrap or other coverings are applied to the exterior of the bandage.
- In U.S. Pat. No. 7,361,184, granted on Apr. 22, 2008, to Ashok Joshi, an attempt to provide a self-contained negative pressure wound therapy device is provided so that the device does not require connection to a remote vacuum source. In this negative pressure wound dressing, an absorptive pad is also disposed in the fluid collection chamber, which is located adjacent to the wound, the negative pressure drawing the exudates and fluids away from the wound into the absorptive pad. Several early embodiments of negative pressure bandages can be found in U.S. Pat. No. 5,636,643, granted to Louis Argenta, et al on Jun. 10, 1997, all of which, however, utilize a single chamber configuration in which a vacuum is applied to the fluid collection chamber and the exudates and fluid is drawn away through tubing to a remote pump and fluid retention chamber.
- It would be desirable to provide a contoured negative pressure bandage that will be adapted to be affixed to a specific contoured body part to remove exudates and fluid from a wound located on that contoured body part.
- It is an object of this invention to overcome the disadvantages of the prior art by providing an integrated negative pressure wound therapy bandage.
- It is another object of this invention to provide negative pressure wound therapy bandages that are contoured to fit specific areas of a patient's body that are conventionally difficult to provide a seal for use in negative pressure wound therapy.
- It is a feature of this invention that a negative pressure bandage is integrated into a single applicable bandage that can provide negative pressure wound therapy.
- It is an advantage of this invention that the components parts of the negative pressure bandage do not require individual installation on a patient to provide negative pressure wound therapy.
- It is another advantage of this invention that the integrated bandage is not inserted into the surface of the wound, but is positioned over top of the wound, to provide negative pressure wound therapy.
- It is another feature of this invention that the integrated bandage structure provides a non-woven polyurethane matrix mesh impregnated with silver nitrate to overlie the wound being treated.
- It is still another advantage of this invention that the silver nitrate mesh inhibits infection and promotes healing of the wound.
- It is yet another feature of this invention that the integrated bandage structure also includes a drain tube disposed within the non-woven polyurethane matrix for connection to a source of negative pressure to withdraw the exudates and fluids from the wound to a remote canister for collection thereof.
- It is yet another advantage of this invention that the non-woven matrix does not absorb the fluids and exudates, but allows the collection thereof into the drain tube for removal from the bandage and from the wound site.
- It is still another object of this invention to provide a therapy for wounds to keep the wound clear of excessive moisture and exudates, and to promote healing of the wound.
- It is yet another object of this invention to provide an integrated negative pressure bandage that is configured to fit onto portions of the human body that is difficult to attach a negative pressure bandage.
- It is an advantage of this invention that the contoured negative pressure bandages are configured to provide a seal around a wound found on certain difficult to fit portions of the human body.
- It is still another object of this invention to provide negative pressure bandages that are contoured to fit on the foot, at both the toe and heel portions of the foot, on limbs, and on the sacral region of the human body and provide a seal against the skin around the wound so that negative pressure therapy can be provided to the wound site.
- It is yet another advantage of this invention that the time to apply a negative pressure bandage to a wound site is reduced by the utilization of an integrated bandage that allows the wound fluids and exudates to be withdrawn from the bandage to a remote canister.
- It is a further feature of this invention that the contoured negative pressure bandage for application to the heel of a patient's foot is formed with junctions, such as cutouts, to facilitate the sealing of the bandage around the heel.
- It is still a further feature of this invention that the drain tube and associated connector can be oriented diagonally to the primary axes of the bandage to position the connector for attaching the vacuum source to the drain tube in an easily accessible and unobtrusive location.
- It is yet another object of this invention to provide an integrated negative pressure bandage that is durable in construction, inexpensive of manufacture, facile in assemblage, and simple and effective in use.
- It is a further object of this invention to provide a negative pressure bandage that is contoured to fit portions of the human body that are difficult to apply negative pressure wound therapy to establish an integrated negative pressure bandage that is simple and effective in use.
- These and other objects, features and advantages are accomplished according to the instant invention by providing an integrated negative pressure bandage having a non-woven polyurethane matrix pad secured on the outside surface to a sheet of polyurethane film formed with an outer adhesive boundary to establish a seal against the skin of the patient around the wound site. The inner surface of the non-woven matrix pad is covered with a silver nitrate mesh to promote healing of the wound site when the bandage is placed on top of the wound. A drain tube is contained within the non-woven matrix pad for connection with a source of negative pressure to draw the fluids and exudates from the wound for removal to a canister that is located remotely from the bandage. Contoured versions of the integrated bandage are provided for use on portions of the human body that present difficult locations for applications of negative pressure therapy, including the toes, heel, limbs, and sacral region.
- The foregoing and other objects, features, and advantages of the invention will appear more fully hereinafter from a consideration of the detailed description that follows, in conjunction with the accompanying sheets of drawings. It is to be expressly understood, however, that the drawings are for illustrative purposes and are not to be construed as defining the limits of the invention.
-
FIG. 1 is a perspective view of an integrated negative pressure bandage incorporating the principles of the instant invention, the bandage ofFIG. 1 being shaped for utilization for injuries or wounds to generally planar portions of the body; -
FIG. 2 is a side perspective view of the integrated negative pressure bandage shown inFIG. 1 ; -
FIG. 3 is a cross-sectional view of the integrated negative pressure bandage corresponding to lines 3-3 ofFIG. 2 ; -
FIG. 4 is a top plan view of an integrated bandage similar to that ofFIG. 1 , but having a circular shape; -
FIG. 5 is a cross-sectional view of the integrated bandage corresponding to lines 5-5 ofFIG. 4 ; -
FIG. 6 is an exploded view of a different embodiment of the integrated negative pressure bandage similar to that shown inFIGS. 1 and 4 ; -
FIG. 7 is an upper perspective view of a first embodiment of a drain tube and connector utilized in the planar bandage shown inFIG. 1 ; -
FIG. 8 is a side elevational view of the drain tube and connector shown inFIG. 7 ; and -
FIG. 9 is an upper perspective view of an alternate embodiment of a drain tube as shown inFIG. 7 ; -
FIG. 10 is a side elevational view of the drain tube shown inFIG. 9 ; -
FIG. 11 is a top plan view of a first embodiment of a contoured negative pressure bandage incorporating the principles of the instant invention for a patient's foot, shown in an opened configuration in which the bandage would be shipped to the patient, the release members not being shown for purposes of clarity; -
FIG. 12 is a side elevational view of the contoured negative pressure bandage for a foot as shown inFIG. 11 , the release members not being shown for purposes of clarity; -
FIG. 13 is a perspective view of the contoured negative pressure bandage as shown inFIG. 11 folded over the toes on the foot of a representative patient; -
FIG. 14 is a top plan view of a second embodiment of the contoured negative pressure bandage for a patient's foot, the release members not being shown for purposes of clarity; -
FIG. 15 is a top plan view of a third embodiment of the contoured negative pressure bandage for a foot, the bandage being shown in an unfolded configuration corresponding to the configuration in which the bandage would be shipped to the patient for subsequent use, the release members not being shown for purposes of clarity; -
FIG. 16 is a perspective view of a wedge member for use in conjunction with the contoured negative pressure bandage shown inFIGS. 12-16 ; -
FIG. 17 is a top plan view of a contoured negative pressure bandage for use with a patient's heel; -
FIG. 18 is a bottom plan view of the contoured negative pressure bandage for heels as shown inFIG. 17 , the release members not being shown for purposes of clarity; -
FIG. 19 is an exploded view of the contoured negative pressure bandage for heels as shown inFIG. 17 ; -
FIG. 20 is a side elevational view of the contoured negative pressure bandage for heels; -
FIG. 21 is a top plan view of an alternative embodiment of the contoured negative pressure bandage for heels, similar to that shown inFIG. 17 ; -
FIG. 22 is a top plan view of the contoured negative pressure bandage for use on the sacral region of a patient; and -
FIG. 23 is a perspective view of the contoured negative pressure bandage shown inFIG. 22 . - Referring to the
FIGS. 1-6 , integrated negative pressure bandages incorporating the principles of the instant invention can best be seen. One of ordinary skill in the art will recognize that the scale of the components of the negative pressure bandages is exaggerated to shown the details of the components. For example, the wound contact member depicted in each of the drawings is enlarged to shown the configuration thereof. The thicknesses and relative sizes of other components may also be distorted to show the invention. Specific contoured configurations of the integrated negative pressure bandages are depicted inFIGS. 12-23 . - The different embodiments of the contoured negative pressure bandages shown in the drawings have some common features relating to the formation of the integrated negative pressure bandage. Each of the bandages have an outer shaped cover formed from a liquid impermeable material, such as polyurethane film, that can be formed into the specific shape required for the bandage configuration, yet provide sufficient flexibility to allow attachment of the bandage to the skin surrounding the injury being treated. The outer cover is provided with an area of adhesive around a perimeter portion of the bandage where the cover would be engaged with the skin around the wound being treated to create a seal between the perimeter of the bandage and the skin. A protective release film would be applied to the adhesive portion until the bandage is to be applied to a patient, substantially covering the entire inner surface of the bandage.
- Furthermore, each of the bandages will have a wound contact member secured to the outer film cover to be positioned between the cover and the body part being treated. While this wound contact member can be formed from gauze padding covered by a mesh layer, preferably a polyethylene mesh impregnated with silver nitrate, the wound contact member is preferably formed with a permeable polymer matrix layer, more specifically a non-woven polyurethane matrix pad is preferred, that will allow the passage of liquids through the pad to keep the surface of the wound contact member against the wound site as dry as possible. Within this wound contact padding is a drain tube connected to an external connector to apply a negative pressure to the bandage that will draw the fluids and exudates from the wound being treated. The surface of the wound contact member, which is in direct contact with the wound being treated, is provided with a mesh layer, preferably a polyethylene mesh impregnated with silver nitrate, to protect the wound and promote healing. In operation, the negative pressure bandage keeps the wound dry and does not allow the fluid to accumulate within the bandage, thus keeping the bandage from bulking up with accumulated fluids that can disrupt the seal around the perimeter of the bandage.
- Referring now to
FIGS. 1-6 , an integratednegative pressure bandage 10 incorporating the principles of the instant invention can best be seen. Thebandage 10 is formed with a non-wovenpolymer matrix pad 15 covered on an inside surface by apolyethylene mesh layer 12 that serves as a wicking function to draw fluids into thepad 15 and keeps thepad 15 from engaging the surface of the wound when thebandage 10 is applied. Preferably, the mesh layer incorporates a coating of, or is impregnated with, a compound of silver nitrate to promote healing and inhibit infection. The outer surface of thenon-woven polymer pad 15 is attached to apolyurethane film 13 formed with an adhesive coveredperimeter portion 14. Adrain tube 20 is positioned within thepad 15 and exits thebandage 10 through an opening within thepolyurethane film 13 to terminate in aconnector 22 adapted for connection to a conduit leading to a vacuum source (not shown) and an associated canister reservoir (not shown). Aseal pad 23 can be provided at the opening through thepolyurethane film 13 for engagement with theconnector 22 to enhance the seal of thebandage 10 when applied to a patient. - Preferably, the
polyurethane film 13 can be formed with an innertransparent film member 13 a and an outer opaque, or skin colored,film member 13 b. The adhesive-covered surface of thepolyurethane film member 13 a is preferably covered by arelease member 16 that is removed from thebandage 10 when the bandage is to be applied to the patient to expose theadhesive boundary 14 for attachment to the patient's skin around the wound site. More preferably, therelease member 16 covers the entire inside surface of thebandage 10 before being removed and can be formed as overlappingmembers outer film member 13 b is preferably constructed from non-woven polyurethane to provide a covering that has a look somewhat like human skin. - The general configuration of the
drain tube 20 andconnector 22 utilized in each of the bandages described above and below, is shown generically inFIGS. 7-10 . One skilled in the art will recognize that thedrain tube 20 can be shaped specifically to conform to any particular shape or configuration of thebandage 10; however,FIGS. 7-10 depict thedrain tube 20 as having a linear configuration. One skilled in the art will also understand that the length and width of thedrain tube 20 is also dependent on the size and shape of thespecific bandage 10. Theconnector 22 is of a conventional size and shape for connection to tubing that would interconnect theconnector 22 with a vacuum pump (not shown). - The
drain tube 20 in the first embodiment depicted inFIGS. 7 and 8 is formed from a pair of opposing, relatively flat bodyfluid collection members 24 that are formed with slottedopenings 26 in the top and bottom surfaces thereof to collect fluids and exudates from the wound through thewound contact member 15. The opposingfluid collection members 24 are connected to acentral collector member 27 that forms a “T” connection with theexternal connector 22 so that the negative pressure applied to theconnector 22 extracts the fluids and exudates from thefluid collection members 24 through thecentral collector member 27 and out through theconnector 22 to an storage device (not shown). - A second embodiment of the
drain tube 20 is depicted inFIGS. 9 and 10 as a single tube configuration. The single flat bodyfluid collection member 24 is connected at one end thereof to theconnector 22 which can pass through theseal pad 23, and also through thepolyurethane film 13, for connection with the vacuum source (not shown). As depicted in the embodiment ofFIGS. 7 and 8 , the flatfluid collection member 24 is formed withopenings 26 in the top and bottom surfaces. As depicted inFIGS. 8 and 10 , the sides of thefluid collection member 24 can also be formed withopenings 26 and thoseopenings 26 can be in any shape from oval to circular, or other geometric shapes. - A first embodiment of a contoured integrated
negative pressure bandage 30 is shown inFIGS. 11-13 , configured for use with the patient's toes. As with the integrated bandage described above with respect toFIGS. 1-6 , this contouredbandage 30 is formed with an outerpolyurethane film cover 13 formed with an outeradhesive boundary 14 located to the exterior of themesh 12 which covers the non-wovenpolymer matrix pad 15. In this embodiment of the contouredbandage 30, thedrain tube 20 is positioned at one end of thepad 15 such that thefluid collection member 24 extends substantially to the opposing end of thepad 15. InFIG. 14 , a second embodiment of thefoot bandage 32 is shown in which thedrain tube 20 is oriented diagonally across thepad 15 such that theconnector 22 is positioned to one side of thebandage 30. - In the application of this first embodiment of the contoured
bandage 30, as is depicted schematically inFIG. 13 , thebandage 30 is wrapped around the ends of the patient's toes in a manner where thepad 15 is located both above the patient's foot and below the patient's foot. Thedrain tube 20 is sufficiently flexible to allow the associated bend in thebandage 30 such that thefluid collection member 24 is also located above and below the patient's foot. Theconnector 22 is oriented over the top of the foot for connection to the vacuum pump (not shown). When the second embodiment of thebandage 32 is applied, theconnector 22 is located at the top of the patient's foot, but to one side of the foot. - Yet a third embodiment of the contoured
negative pressure bandage 35 configured for application to a patient's foot is shown inFIG. 15 . The non-wovenpolymer matrix pad 15 is formed smaller than the first embodiment shown inFIGS. 11 and 14 , and preferably in a semi-circular shape. Thepad 15 is located at one end of thepolyurethane film cover 13, terminating at acenter fold line 28 so that the opposing half of thefilm cover 13 is devoid of apad 15. Furthermore, most of the opposing half of thefilm cover 13 can be covered with a layer ofadhesive 14. In application, the third embodiment of thefoot bandage 35 is applied so that thepad 15 covers the open wound. - If the wound is on the bottom of the patient's foot, then the opposing half of the
film cover 13 is wrapped over the ends of the toes and sealed against the top of the foot. Since thedrain tube 20 is oriented diagonally, theconnector 22 will project from one side of thebandage 35 to be connected to the vacuum pump (not shown). The ends of the patient's toes should be positioned proximate to the middle of thepad 15 so that thefold line 28 is spaced from the ends of the patient's toes. Theadhesive areas 14 on the opposing side of thefilm cover 13 and around thepad 15 and seal against each other and against the patient's foot to provide a seal around thepad 15 for the application of negative pressure therapy. - In
FIG. 16 , awedge member 29 is schematically shown. Preferably, for ease of manufacture, thewedge member 29 is rectangular in shape, but could be formed in a triangular or wedge shape as well. The purpose of thewedge member 29 is to separate the patient's toes prior to application of thebandage wedge member 29 will increase the effectiveness of the negative pressure therapy. - Referring now to
FIGS. 17-21 , anintegrated bandage 40 contoured for application to a patient's heel is shown. As with the bandages described above, theheel bandage 40 has a shapedpolyurethane film cover 13 on the outside surface of a non-wovenpolymer matrix pad 15 that has asilver nitrate mesh 12 on the inside surface. Thepolyurethane film cover 13 has a particular shape configured to be applied to the patient's heel. Thefilm cover 13 has an upperrounded portion 42 surrounding anupper portion 46 of thepad 15 where theconnector 22 is located. Thelower portion 43 of thefilm cover 13 is formed with threeflaps 44 projecting outwardly from thelower portion 47 of thepad 15. Theflaps 44 are separated byjunctions 45 that provide flexibility in the application of the adhesive coveredflaps 44 to the patient's skin. Thejunctions 45 between theflaps 44 can be formed ascutouts 45, as is shown inFIGS. 17 and 18 , or as aweb 45 a, as is depicted inFIG. 21 . Thedrain tube 20 in the first embodiment of theheel bandage 40 is oriented along the major vertical axis of thebandage 40. - In application, the
heel bandage 40 is positioned so that thelower portion 47 covers the open wound and the fluids and exudates can be evacuated from the wound via thedrain tube 20. The rounded upper portion of thefilm cover 13 is easily applied to the lower part of the patient's calf irrespective of the orientation of theheel bandage 40 to the patient. Thelower portion 43 of thefilm cover 13, however, is typically applied to the patient's ankle, which is much more difficult to obtain a seal. Thejunctions 45 between theflaps 44 allow theflaps 44 to be oriented as needed to obtain a seal against the patient's ankle area. Furthermore, thejunctions 45 provide a place where the medical service provider can tear thefilm cover 13 if further modifications become necessary. InFIG. 21 , a second embodiment of the heel bandage 49 is depicted. The component parts are formed as described above, except for the orientation of thedrain tube 20, which is positioned diagonally across thepad 15 so that theconnector 22 exits the polyurethanefilm cover member 13 at one side thereof. Furthermore, the junctions are depicted asperforated webs 45 a between theflaps 44 to allow selective tearing of thewebs 45 a to accomplish the folding of theflaps 44 and the sealing of thebandage 10. - For wounds on the bottom of the heel, the
heel bandage 40 is applied with thelower portion 47 of thepad 15 located under the foot against the open wound. The upper portion of thefilm cover 13 can be secured against the back portion of the patient's leg and theflaps 44 can be wrapped around the sides of the foot and along the sole. Theconnector 22 will be oriented vertically in back of the leg. If the wound is in the rear part of the heel, thelower part 47 of thepad 15 is positioned over the wound while theflaps 44 are wrapped around the sides of the ankle and underneath the heel. If the wound is on the ankle along the side of the foot, thelower part 47 of thepad 15 is placed over the wound with theupper portion 42 of thefilm cover 13 being oriented along the side of the leg. Theflaps 44 can then be secured to the inside of the foot, behind the heel, and underneath the foot. Thejunctions 45 in each of the scenarios noted above enable the threerespective flaps 44 to be secured against the patient's foot in different planes and in different orientations. - An integrated
negative pressure bandage 50 contoured to be applied to the sacral region of the patient is shown inFIGS. 22 and 23 . As described above, thesacral bandage 50 is formed with a non-wovenpolymer matrix pad 15 having affixed to the outside surface thereof apolyurethane film cover 13 and to the inner surface thereof amesh 12 impregnated with silver nitrate. Thedrain tube 20 terminates in aconnector 22 above thefilm cover 13 and includes afluid collection member 24 embedded into thepad 15. Thebandage 50 is formed with acurved indent pad 15 is formed with acurved indent 54 at the top central portion thereof. - It will be understood that changes in the details, materials, steps and arrangements of parts which have been described and illustrated to explain the nature of the invention will occur to and may be made by those skilled in the art upon a reading of this disclosure within the principles and scope of the invention. The foregoing description illustrates the preferred embodiments of the invention; however, concepts, as based upon the description, may be employed in other embodiments without departing from the scope of the invention. The invention is not otherwise limited, except for the recitation of the claims set forth below.
Claims (16)
1. An integrated negative pressure bandage connectable to a source of negative pressure to remove fluids and exudate from a wound, comprising:
a non-woven polymer matrix pad having an upper surface and a lower surface, said lower surface being positionable adjacent to and in engagement with said wound;
a polymer film cover integrally affixed to said upper surface of said pad, said film cover having a peripheral boundary surrounding said pad, said film cover having a peripheral boundary surrounding said pad and an opening therethrough, said peripheral boundary including an adhesive layer mounted thereon and projecting outwardly from said non-woven polymer matrix pad such that said adhesive layer is operable to form a seal around said wound with said non-woven polymer matrix pad being positioned over said wound;
a connection port integrally secured to said film cover in flow communication with said opening, said connection port being connectable to said source of negative pressure to extract fluids and exudate from said wound through said non-woven polymer matrix pad;
a mesh layer covering said lower surface of said pad and being integrally secured to said film cover; and
a release member removably attached to said adhesive layer, said release member being an integral part of said bandage before being removed from said adhesive layer to expose said adhesive layer for sealing around said wound.
2. The integrated negative pressure bandage of claim 1 wherein said mesh layer is impregnated with silver nitrate.
3. The integrated negative pressure bandage of claim 1 wherein said non-woven polymer matrix pad and said polymer film cover have an oval shape.
4. The integrated negative pressure bandage of claim 1 wherein said fluids and exudate from said wound are not stored within said non-woven polymer matrix pad and are continuously removed from said non-woven polymer matrix pad through said connection port.
5. The integrated negative pressure bandage of claim 1 wherein said connection port is integrally secured to said polymer film cover by a seal pad that surrounds said connection port and is secured by adhesive to said polymer film cover.
6. The integrated negative pressure bandage of claim 1 wherein said bandage is applied to a patient having said wound by removing said release member and attaching said adhesive layer exposed by the removal of said release member to said patient such that said adhesive layer is sealed to the patient around said wound with said non-woven polymer matrix pad being positioned over said wound, and attaching said connector port to said source of negative pressure.
7. An integrated negative pressure bandage connectable to a source of negative pressure to remove fluids and exudate from a wound, comprising:
a non-woven polymer matrix pad having an upper surface and a lower surface, said lower surface being positionable adjacent to and in engagement with said wound;
a polymer film cover integrally affixed to said upper surface of said pad, said film cover having a peripheral boundary surrounding said pad, said film cover having a peripheral boundary surrounding said pad and an opening therethrough, said peripheral boundary including an adhesive layer mounted thereon and projecting outwardly from said non-woven polymer matrix pad such that said adhesive layer is operable to form a seal around said wound with said non-woven polymer matrix pad being positioned over said wound;
a connection port integrally secured to said film cover in flow communication with said opening, said connection port being connectable to said source of negative pressure to extract fluids and exudate from said wound through said non-woven polymer matrix pad, said connection port being integrally secured to said polymer film cover by a seal pad that surrounds said connection port and is secured by adhesive to said polymer film cover; and
a release member removably attached to said adhesive layer, said release member being an integral part of said bandage before being removed from said adhesive layer to expose said adhesive layer for sealing around said wound.
8. The integrated negative pressure bandage of claim 7 further comprising a mesh layer covering said lower surface of said pad and being integrally secured to said film cover.
9. The integrated negative pressure bandage of claim 8 wherein said mesh layer is impregnated with silver nitrate.
10. The integrated negative pressure bandage of claim 7 wherein said non-woven polymer matrix pad and said polymer film cover have an oval shape.
11. The integrated negative pressure bandage of claim 7 wherein said fluids and exudate from said wound are not stored within said non-woven polymer matrix pad.
12. The integrated negative pressure bandage of claim 11 wherein said fluids and exudate are continuously removed from said non-woven polymer matrix pad through said connection port.
13. The integrated negative pressure bandage of claim 7 wherein said bandage is applied to a patient having said wound by removing said release member and attaching said adhesive layer exposed by the removal of said release member to said patient such that said adhesive layer is sealed to the patient around said wound with said non-woven polymer matrix pad being positioned over said wound, and attaching said connector port to said source of negative pressure.
14. An integrated negative pressure bandage connectable to a source of negative pressure to remove fluids and exudate from a wound, comprising:
an oval-shaped, non-woven polymer matrix pad having an upper surface and a lower surface, said lower surface being positionable adjacent to and in engagement with said wound;
an oval-shaped polymer film cover integrally affixed to said upper surface of said pad, said film cover having a peripheral boundary surrounding said pad, said film cover having a peripheral boundary surrounding said pad and an opening therethrough, said peripheral boundary including an adhesive layer mounted thereon and projecting outwardly from said non-woven polymer matrix pad such that said adhesive layer is operable to form a seal around said wound with said non-woven polymer matrix pad being positioned over said wound;
a connection port integrally secured to said film cover in flow communication with said opening, said connection port being connectable to said source of negative pressure to extract fluids and exudate from said wound through said non-woven polymer matrix pad, said connection port being integrally secured to said polymer film cover by a seal pad that surrounds said connection port and is secured by adhesive to said polymer film cover;
a mesh layer covering said lower surface of said pad and being integrally secured to said film cover; and
a release member removably attached to said adhesive layer, said release member being an integral part of said bandage before being removed from said adhesive layer to expose said adhesive layer for sealing around said wound.
15. The integrated negative pressure bandage of claim 14 wherein said mesh layer is impregnated with silver nitrate.
16. The integrated negative pressure bandage of claim 14 wherein said bandage is applied to a patient having said wound by removing said release member and attaching said adhesive layer exposed by the removal of said release member to said patient such that said adhesive layer is sealed to the patient around said wound with said non-woven polymer matrix pad being positioned over said wound, and attaching said connector port to said source of negative pressure.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/447,579 US20140343520A1 (en) | 2010-08-12 | 2014-07-30 | Integrated Negative Pressure Bandages |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US37323310P | 2010-08-12 | 2010-08-12 | |
US13/207,391 US8795247B2 (en) | 2010-08-12 | 2011-08-10 | Integrated contoured negative pressure bandages |
US14/447,579 US20140343520A1 (en) | 2010-08-12 | 2014-07-30 | Integrated Negative Pressure Bandages |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/207,391 Division US8795247B2 (en) | 2010-08-12 | 2011-08-10 | Integrated contoured negative pressure bandages |
Publications (1)
Publication Number | Publication Date |
---|---|
US20140343520A1 true US20140343520A1 (en) | 2014-11-20 |
Family
ID=44718921
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/207,391 Active - Reinstated 2031-08-17 US8795247B2 (en) | 2010-08-12 | 2011-08-10 | Integrated contoured negative pressure bandages |
US14/447,579 Abandoned US20140343520A1 (en) | 2010-08-12 | 2014-07-30 | Integrated Negative Pressure Bandages |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/207,391 Active - Reinstated 2031-08-17 US8795247B2 (en) | 2010-08-12 | 2011-08-10 | Integrated contoured negative pressure bandages |
Country Status (3)
Country | Link |
---|---|
US (2) | US8795247B2 (en) |
EP (1) | EP2417947A1 (en) |
CN (1) | CN102370545B (en) |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016141291A1 (en) * | 2015-03-04 | 2016-09-09 | Viaderm, Llc | Vacuum assisted skin penetrating appliance with external interface |
WO2016160997A1 (en) * | 2015-04-02 | 2016-10-06 | Galbierz Thomas R | Adhesive therapeutic cover |
USD806242S1 (en) | 2012-05-23 | 2017-12-26 | Smith & Nephew Plc | Flexible port used to connect a wound dressing to a source of negative pressure |
US9956389B2 (en) | 2010-12-22 | 2018-05-01 | Smith & Nephew, Inc. | Apparatuses and methods for negative pressure wound therapy |
US9974695B2 (en) | 2009-12-22 | 2018-05-22 | Smith & Nephew, Inc. | Apparatuses and methods for negative pressure wound therapy |
WO2018101846A1 (en) * | 2016-12-01 | 2018-06-07 | Kossak Tomasz | Dressing for the control of severe bleeding |
US10010658B2 (en) | 2013-05-10 | 2018-07-03 | Smith & Nephew Plc | Fluidic connector for irrigation and aspiration of wounds |
US10076449B2 (en) | 2012-08-01 | 2018-09-18 | Smith & Nephew Plc | Wound dressing and method of treatment |
US10076594B2 (en) | 2015-05-18 | 2018-09-18 | Smith & Nephew Plc | Fluidic connector for negative pressure wound therapy |
USRE47644E1 (en) | 2010-10-15 | 2019-10-15 | Smith & Nephew Plc | Medical dressing |
US10667955B2 (en) | 2012-08-01 | 2020-06-02 | Smith & Nephew Plc | Wound dressing and method of treatment |
USRE48117E1 (en) | 2010-05-07 | 2020-07-28 | Smith & Nephew, Inc. | Apparatuses and methods for negative pressure wound therapy |
US11123215B2 (en) | 2016-08-16 | 2021-09-21 | Renuka Pradhan | Pressure relief apparatus for wound |
USRE49227E1 (en) | 2010-10-15 | 2022-10-04 | Smith & Nephew Plc | Medical dressing |
US11607346B2 (en) | 2017-11-01 | 2023-03-21 | Smith & Nephew Plc | Dressing for negative pressure wound therapy with filter |
US11819386B2 (en) | 2018-07-12 | 2023-11-21 | T.J.Smith And Nephew, Limited | Apparatuses and methods for negative pressure wound therapy |
US12016993B2 (en) | 2020-01-15 | 2024-06-25 | T.J.Smith And Nephew, Limited | Fluidic connectors for negative pressure wound therapy |
Families Citing this family (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB0224986D0 (en) | 2002-10-28 | 2002-12-04 | Smith & Nephew | Apparatus |
GB0325129D0 (en) | 2003-10-28 | 2003-12-03 | Smith & Nephew | Apparatus in situ |
JP2009506878A (en) | 2005-09-07 | 2009-02-19 | タイコ ヘルスケア グループ リミテッド パートナーシップ | Self-contained wound care with micropump |
US7967810B2 (en) | 2006-10-20 | 2011-06-28 | Mary Beth Kelley | Sub-atmospheric wound-care system |
US9023001B2 (en) * | 2007-09-12 | 2015-05-05 | Heal-Ex, Llc | Systems and methods for providing a debriding wound vacuum |
US11253399B2 (en) | 2007-12-06 | 2022-02-22 | Smith & Nephew Plc | Wound filling apparatuses and methods |
US20130096518A1 (en) | 2007-12-06 | 2013-04-18 | Smith & Nephew Plc | Wound filling apparatuses and methods |
US20090177051A1 (en) * | 2008-01-09 | 2009-07-09 | Heal-Ex, Llc | Systems and methods for providing sub-dressing wound analysis and therapy |
EP2464412A4 (en) | 2009-08-13 | 2014-08-20 | Michael Simms Shuler | Methods and dressing systems for promoting healing of injured tissue |
US9061095B2 (en) | 2010-04-27 | 2015-06-23 | Smith & Nephew Plc | Wound dressing and method of use |
US10639404B2 (en) | 2010-06-03 | 2020-05-05 | Wound Healing Technologies, Llc | Wound dressing |
EP2417947A1 (en) * | 2010-08-12 | 2012-02-15 | John Bennett | Integrated contoured negative pressure bandages |
US9597484B2 (en) | 2011-04-15 | 2017-03-21 | University Of Massachusetts | Surgical cavity drainage and closure system |
CN107252383A (en) | 2011-07-14 | 2017-10-17 | 史密夫及内修公开有限公司 | Wound dressing and treatment method |
US20150164697A1 (en) * | 2011-07-19 | 2015-06-18 | Malin Malmsjö | Stabilizer, barrier disc and wound dressing comprising stabilizer, method for controlling the position of a wound dressing or barrier disc, and method for facilitating drainage from a wound dressing or barrier disc in negative pressure wound treatment |
US9114054B2 (en) * | 2011-07-24 | 2015-08-25 | Oakwell Distribution, Inc. | System for monitoring the use of medical devices |
US9393354B2 (en) | 2011-11-01 | 2016-07-19 | J&M Shuler Medical, Inc. | Mechanical wound therapy for sub-atmospheric wound care system |
CA3122007A1 (en) | 2012-03-12 | 2013-09-19 | Smith & Nephew Plc | Reduced pressure apparatus and methods |
AU346291S (en) | 2012-05-15 | 2013-01-09 | Smith & Nephew | Medical dressing |
DE102012214182A1 (en) * | 2012-08-09 | 2014-03-06 | Paul Hartmann Ag | Connection device for use in the negative pressure therapy of wounds |
JP6289475B2 (en) * | 2012-10-01 | 2018-03-07 | メンリッケ・ヘルス・ケア・アーベー | Wound therapy device |
US9474653B2 (en) * | 2013-03-14 | 2016-10-25 | Kci Licensing, Inc. | Absorbent dressing and method |
RU2015143729A (en) | 2013-03-15 | 2017-04-21 | СМИТ ЭНД НЕФЬЮ ПиЭлСи | Wound dressing and method of treatment |
CN105377206A (en) * | 2013-07-05 | 2016-03-02 | 墨尼克医疗用品有限公司 | Wound pads |
US20150165172A1 (en) * | 2013-09-19 | 2015-06-18 | II Billy Russell Wall | Wound Drain |
JP6586431B2 (en) | 2014-06-18 | 2019-10-02 | スミス アンド ネフュー ピーエルシーSmith & Nephew Public Limited Company | Wound dressing and method of treatment |
USD773059S1 (en) | 2015-03-16 | 2016-11-29 | Covidien Lp | Sacral wound dressing |
USD774201S1 (en) | 2015-03-16 | 2016-12-13 | Covidien Lp | Sacral wound dressing |
USD774200S1 (en) | 2015-03-16 | 2016-12-13 | Covidien Lp | Sacral wound dressing |
US10583228B2 (en) | 2015-07-28 | 2020-03-10 | J&M Shuler Medical, Inc. | Sub-atmospheric wound therapy systems and methods |
USD773060S1 (en) | 2015-12-21 | 2016-11-29 | Covidien Lp | Sacral wound dressing |
CN109069708B (en) | 2016-03-04 | 2022-04-12 | 史密夫及内修公开有限公司 | Negative pressure wound therapy device for wounds after breast surgery |
US11478375B1 (en) | 2016-05-27 | 2022-10-25 | Mary C. Bailey | Digit wrapping assembly and method |
GB2555584B (en) | 2016-10-28 | 2020-05-27 | Smith & Nephew | Multi-layered wound dressing and method of manufacture |
US10046095B1 (en) | 2017-04-04 | 2018-08-14 | Aatru Medical, LLC | Wound therapy device and method |
US10583229B2 (en) | 2017-04-04 | 2020-03-10 | Aatru Medical, LLC | Negative pressure device and method |
US11160917B2 (en) | 2020-01-22 | 2021-11-02 | J&M Shuler Medical Inc. | Negative pressure wound therapy barrier |
Citations (50)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3875937A (en) * | 1963-10-31 | 1975-04-08 | American Cyanamid Co | Surgical dressings of absorbable polymers |
US4112947A (en) * | 1975-10-01 | 1978-09-12 | International Paper Company | Combined irrigator and evacuator for closed wounds |
US4261363A (en) * | 1979-11-09 | 1981-04-14 | C. R. Bard, Inc. | Retention clips for body fluid drains |
US4573965A (en) * | 1984-02-13 | 1986-03-04 | Superior Plastic Products Corp. | Device for draining wounds |
US4661093A (en) * | 1983-06-11 | 1987-04-28 | Walter Beck | Method for aspirating secreted fluids from a wound |
US4743232A (en) * | 1986-10-06 | 1988-05-10 | The Clinipad Corporation | Package assembly for plastic film bandage |
US4917112A (en) * | 1988-08-22 | 1990-04-17 | Kalt Medical Corp. | Universal bandage with transparent dressing |
US4941882A (en) * | 1987-03-14 | 1990-07-17 | Smith And Nephew Associated Companies, P.L.C. | Adhesive dressing for retaining a cannula on the skin |
US4969880A (en) * | 1989-04-03 | 1990-11-13 | Zamierowski David S | Wound dressing and treatment method |
US5106362A (en) * | 1989-04-13 | 1992-04-21 | The Kendall Company | Vented absorbent dressing |
US5261893A (en) * | 1989-04-03 | 1993-11-16 | Zamierowski David S | Fastening system and method |
US5636643A (en) * | 1991-11-14 | 1997-06-10 | Wake Forest University | Wound treatment employing reduced pressure |
US5645081A (en) * | 1991-11-14 | 1997-07-08 | Wake Forest University | Method of treating tissue damage and apparatus for same |
US5678564A (en) * | 1992-08-07 | 1997-10-21 | Bristol Myers Squibb | Liquid removal system |
US5685859A (en) * | 1994-06-02 | 1997-11-11 | Nikomed Aps | Device for fixating a drainage tube and a drainage tube assembly |
US5891111A (en) * | 1997-04-14 | 1999-04-06 | Porges | Flexible surgical drain with a plurality of individual ducts |
US6117111A (en) * | 1994-09-20 | 2000-09-12 | Fleischmann; Wim | Device for sealing an injury area |
US20020032485A1 (en) * | 2000-03-29 | 2002-03-14 | Eric Flam | Apparatus and methods for preventing and/or healing pressure ulcers |
US6398767B1 (en) * | 1997-05-27 | 2002-06-04 | Wilhelm Fleischmann | Process and device for application of active substances to a wound surface area |
US20020082567A1 (en) * | 2000-11-29 | 2002-06-27 | Lockwood Jeffrey S. | Vacuum therapy and cleansing dressing for wounds |
US20020115952A1 (en) * | 2001-02-20 | 2002-08-22 | Kci Licensing, Inc. | Biocompatible wound dressing |
US20020161346A1 (en) * | 2000-11-29 | 2002-10-31 | Lockwood Jeffrey S. | Vacuum therapy and cleansing dressing for wounds |
US6626891B2 (en) * | 1997-07-03 | 2003-09-30 | Polymedics N.V. | Drainage system to be used with an open wound, an element which is used thereby for placing a drainage tube or hose, and a method of using said drainage system |
US20040015115A1 (en) * | 2002-05-07 | 2004-01-22 | Dmitriy Sinyagin | Method for treating wound, dressing for use therewith and apparatus and system for fabricating dressing |
US20040030304A1 (en) * | 2000-05-09 | 2004-02-12 | Kenneth Hunt | Abdominal wound dressing |
US6695823B1 (en) * | 1999-04-09 | 2004-02-24 | Kci Licensing, Inc. | Wound therapy device |
US6979324B2 (en) * | 2002-09-13 | 2005-12-27 | Neogen Technologies, Inc. | Closed wound drainage system |
US20070027414A1 (en) * | 2005-07-28 | 2007-02-01 | Integra Lifesciences Corporation | Laminar construction negative pressure wound dressing including bioabsorbable material |
US20070066945A1 (en) * | 2003-10-28 | 2007-03-22 | Martin Robin P | Wound cleansing apparatus with scaffold |
US7198046B1 (en) * | 1991-11-14 | 2007-04-03 | Wake Forest University Health Sciences | Wound treatment employing reduced pressure |
US7214847B1 (en) * | 1997-09-22 | 2007-05-08 | Argentum Medical, L.L.C. | Multilayer conductive appliance having wound healing and analgesic properties |
US20070219532A1 (en) * | 2005-07-14 | 2007-09-20 | Boehringer Technologies, Lp | Pump system for negative pressure wound therapy |
US20070293830A1 (en) * | 2004-10-29 | 2007-12-20 | Smith & Nephew, Plc | Simultaneous Aspirate & Irrigate & Scaffold |
US7361184B2 (en) * | 2003-09-08 | 2008-04-22 | Joshi Ashok V | Device and method for wound therapy |
US20080119773A1 (en) * | 1997-09-22 | 2008-05-22 | Argentum International, Llc | Multilayer conductive appliance having wound healing and analgesic properties |
US20080167593A1 (en) * | 2005-02-15 | 2008-07-10 | Wilhelm Fleischmann | Wound Treatment Device |
US20080286329A1 (en) * | 2002-03-18 | 2008-11-20 | Carnegie Mellon University | Methods and Apparatus for Manufacturing Plasma Based Plastics and Bioplastics Produced Therefrom |
US7520872B2 (en) * | 2002-09-13 | 2009-04-21 | Neogen Technologies, Inc. | Closed wound drainage system |
US7524315B2 (en) * | 2002-10-28 | 2009-04-28 | Smith & Nephew Plc | Apparatus for aspirating, irrigating and cleansing wounds |
US7615036B2 (en) * | 2006-05-11 | 2009-11-10 | Kalypto Medical, Inc. | Device and method for wound therapy |
US20090280182A1 (en) * | 2008-04-30 | 2009-11-12 | Stayce Beck | Devices for the treatment of wounds and methods and kits therefor |
US20090299251A1 (en) * | 2008-05-27 | 2009-12-03 | John Buan | Negative pressure wound therapy device |
US20100047324A1 (en) * | 2008-02-22 | 2010-02-25 | Celonova Biosciences, Inc. | Multi-Functional Wound Dressing Matrices and Related Methods |
US20120041403A1 (en) * | 2010-08-12 | 2012-02-16 | John A. Bennett | Integrated Contoured Negative Pressure Bandages |
US20130023719A1 (en) * | 2011-07-24 | 2013-01-24 | Oakwell Distribution, Inc. | System for Monitoring the Use of Medical Devices |
US20130204106A1 (en) * | 2011-07-24 | 2013-08-08 | John A. Bennett | Cloud-Based Monitoring of Medical Devices |
US20130274629A1 (en) * | 2012-04-12 | 2013-10-17 | Elwha LLC a limited liability company of the State of Delaware | Appurtenances for reporting information regarding wound dressings |
US20140018637A1 (en) * | 2012-07-12 | 2014-01-16 | Oakwell - Cayman Company | Cloud-Based Monitoring of Medical Devices |
US8753322B2 (en) * | 2010-08-10 | 2014-06-17 | Spiracur Inc. | Controlled negative pressure apparatus and alarm mechanism |
US8795246B2 (en) * | 2010-08-10 | 2014-08-05 | Spiracur Inc. | Alarm system |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7700819B2 (en) * | 2001-02-16 | 2010-04-20 | Kci Licensing, Inc. | Biocompatible wound dressing |
WO2010011148A1 (en) * | 2008-07-24 | 2010-01-28 | Frederick George | Negative pressure wound therapy system |
-
2011
- 2011-08-09 EP EP20110177027 patent/EP2417947A1/en not_active Withdrawn
- 2011-08-10 US US13/207,391 patent/US8795247B2/en active Active - Reinstated
- 2011-08-12 CN CN201110231322.3A patent/CN102370545B/en not_active Expired - Fee Related
-
2014
- 2014-07-30 US US14/447,579 patent/US20140343520A1/en not_active Abandoned
Patent Citations (50)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3875937A (en) * | 1963-10-31 | 1975-04-08 | American Cyanamid Co | Surgical dressings of absorbable polymers |
US4112947A (en) * | 1975-10-01 | 1978-09-12 | International Paper Company | Combined irrigator and evacuator for closed wounds |
US4261363A (en) * | 1979-11-09 | 1981-04-14 | C. R. Bard, Inc. | Retention clips for body fluid drains |
US4661093A (en) * | 1983-06-11 | 1987-04-28 | Walter Beck | Method for aspirating secreted fluids from a wound |
US4573965A (en) * | 1984-02-13 | 1986-03-04 | Superior Plastic Products Corp. | Device for draining wounds |
US4743232A (en) * | 1986-10-06 | 1988-05-10 | The Clinipad Corporation | Package assembly for plastic film bandage |
US4941882A (en) * | 1987-03-14 | 1990-07-17 | Smith And Nephew Associated Companies, P.L.C. | Adhesive dressing for retaining a cannula on the skin |
US4917112A (en) * | 1988-08-22 | 1990-04-17 | Kalt Medical Corp. | Universal bandage with transparent dressing |
US4969880A (en) * | 1989-04-03 | 1990-11-13 | Zamierowski David S | Wound dressing and treatment method |
US5261893A (en) * | 1989-04-03 | 1993-11-16 | Zamierowski David S | Fastening system and method |
US5106362A (en) * | 1989-04-13 | 1992-04-21 | The Kendall Company | Vented absorbent dressing |
US5645081A (en) * | 1991-11-14 | 1997-07-08 | Wake Forest University | Method of treating tissue damage and apparatus for same |
US5636643A (en) * | 1991-11-14 | 1997-06-10 | Wake Forest University | Wound treatment employing reduced pressure |
US7198046B1 (en) * | 1991-11-14 | 2007-04-03 | Wake Forest University Health Sciences | Wound treatment employing reduced pressure |
US5678564A (en) * | 1992-08-07 | 1997-10-21 | Bristol Myers Squibb | Liquid removal system |
US5685859A (en) * | 1994-06-02 | 1997-11-11 | Nikomed Aps | Device for fixating a drainage tube and a drainage tube assembly |
US6117111A (en) * | 1994-09-20 | 2000-09-12 | Fleischmann; Wim | Device for sealing an injury area |
US5891111A (en) * | 1997-04-14 | 1999-04-06 | Porges | Flexible surgical drain with a plurality of individual ducts |
US6398767B1 (en) * | 1997-05-27 | 2002-06-04 | Wilhelm Fleischmann | Process and device for application of active substances to a wound surface area |
US6626891B2 (en) * | 1997-07-03 | 2003-09-30 | Polymedics N.V. | Drainage system to be used with an open wound, an element which is used thereby for placing a drainage tube or hose, and a method of using said drainage system |
US20080119773A1 (en) * | 1997-09-22 | 2008-05-22 | Argentum International, Llc | Multilayer conductive appliance having wound healing and analgesic properties |
US7214847B1 (en) * | 1997-09-22 | 2007-05-08 | Argentum Medical, L.L.C. | Multilayer conductive appliance having wound healing and analgesic properties |
US6695823B1 (en) * | 1999-04-09 | 2004-02-24 | Kci Licensing, Inc. | Wound therapy device |
US20020032485A1 (en) * | 2000-03-29 | 2002-03-14 | Eric Flam | Apparatus and methods for preventing and/or healing pressure ulcers |
US20040030304A1 (en) * | 2000-05-09 | 2004-02-12 | Kenneth Hunt | Abdominal wound dressing |
US20020161346A1 (en) * | 2000-11-29 | 2002-10-31 | Lockwood Jeffrey S. | Vacuum therapy and cleansing dressing for wounds |
US20020082567A1 (en) * | 2000-11-29 | 2002-06-27 | Lockwood Jeffrey S. | Vacuum therapy and cleansing dressing for wounds |
US20020115952A1 (en) * | 2001-02-20 | 2002-08-22 | Kci Licensing, Inc. | Biocompatible wound dressing |
US20080286329A1 (en) * | 2002-03-18 | 2008-11-20 | Carnegie Mellon University | Methods and Apparatus for Manufacturing Plasma Based Plastics and Bioplastics Produced Therefrom |
US20040015115A1 (en) * | 2002-05-07 | 2004-01-22 | Dmitriy Sinyagin | Method for treating wound, dressing for use therewith and apparatus and system for fabricating dressing |
US7520872B2 (en) * | 2002-09-13 | 2009-04-21 | Neogen Technologies, Inc. | Closed wound drainage system |
US6979324B2 (en) * | 2002-09-13 | 2005-12-27 | Neogen Technologies, Inc. | Closed wound drainage system |
US7524315B2 (en) * | 2002-10-28 | 2009-04-28 | Smith & Nephew Plc | Apparatus for aspirating, irrigating and cleansing wounds |
US7361184B2 (en) * | 2003-09-08 | 2008-04-22 | Joshi Ashok V | Device and method for wound therapy |
US20070066945A1 (en) * | 2003-10-28 | 2007-03-22 | Martin Robin P | Wound cleansing apparatus with scaffold |
US20070293830A1 (en) * | 2004-10-29 | 2007-12-20 | Smith & Nephew, Plc | Simultaneous Aspirate & Irrigate & Scaffold |
US20080167593A1 (en) * | 2005-02-15 | 2008-07-10 | Wilhelm Fleischmann | Wound Treatment Device |
US20070219532A1 (en) * | 2005-07-14 | 2007-09-20 | Boehringer Technologies, Lp | Pump system for negative pressure wound therapy |
US20070027414A1 (en) * | 2005-07-28 | 2007-02-01 | Integra Lifesciences Corporation | Laminar construction negative pressure wound dressing including bioabsorbable material |
US7615036B2 (en) * | 2006-05-11 | 2009-11-10 | Kalypto Medical, Inc. | Device and method for wound therapy |
US20100047324A1 (en) * | 2008-02-22 | 2010-02-25 | Celonova Biosciences, Inc. | Multi-Functional Wound Dressing Matrices and Related Methods |
US20090280182A1 (en) * | 2008-04-30 | 2009-11-12 | Stayce Beck | Devices for the treatment of wounds and methods and kits therefor |
US20090299251A1 (en) * | 2008-05-27 | 2009-12-03 | John Buan | Negative pressure wound therapy device |
US8753322B2 (en) * | 2010-08-10 | 2014-06-17 | Spiracur Inc. | Controlled negative pressure apparatus and alarm mechanism |
US8795246B2 (en) * | 2010-08-10 | 2014-08-05 | Spiracur Inc. | Alarm system |
US20120041403A1 (en) * | 2010-08-12 | 2012-02-16 | John A. Bennett | Integrated Contoured Negative Pressure Bandages |
US20130023719A1 (en) * | 2011-07-24 | 2013-01-24 | Oakwell Distribution, Inc. | System for Monitoring the Use of Medical Devices |
US20130204106A1 (en) * | 2011-07-24 | 2013-08-08 | John A. Bennett | Cloud-Based Monitoring of Medical Devices |
US20130274629A1 (en) * | 2012-04-12 | 2013-10-17 | Elwha LLC a limited liability company of the State of Delaware | Appurtenances for reporting information regarding wound dressings |
US20140018637A1 (en) * | 2012-07-12 | 2014-01-16 | Oakwell - Cayman Company | Cloud-Based Monitoring of Medical Devices |
Cited By (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9999547B2 (en) | 2009-12-22 | 2018-06-19 | Smith & Nephew, Inc. | Apparatuses and methods for negative pressure wound therapy |
US11058588B2 (en) | 2009-12-22 | 2021-07-13 | Smith & Nephew, Inc. | Apparatuses and methods for negative pressure wound therapy |
US10406037B2 (en) | 2009-12-22 | 2019-09-10 | Smith & Nephew, Inc. | Apparatuses and methods for negative pressure wound therapy |
US9974695B2 (en) | 2009-12-22 | 2018-05-22 | Smith & Nephew, Inc. | Apparatuses and methods for negative pressure wound therapy |
USRE48117E1 (en) | 2010-05-07 | 2020-07-28 | Smith & Nephew, Inc. | Apparatuses and methods for negative pressure wound therapy |
USRE47644E1 (en) | 2010-10-15 | 2019-10-15 | Smith & Nephew Plc | Medical dressing |
USRE49227E1 (en) | 2010-10-15 | 2022-10-04 | Smith & Nephew Plc | Medical dressing |
USRE48282E1 (en) | 2010-10-15 | 2020-10-27 | Smith & Nephew Plc | Medical dressing |
US11247034B2 (en) | 2010-12-22 | 2022-02-15 | Smith & Nephew, Inc. | Apparatuses and methods for negative pressure wound therapy |
US9956389B2 (en) | 2010-12-22 | 2018-05-01 | Smith & Nephew, Inc. | Apparatuses and methods for negative pressure wound therapy |
USD806256S1 (en) | 2012-05-23 | 2017-12-26 | Smith & Nephew Plc | Medical dressing |
USD866756S1 (en) | 2012-05-23 | 2019-11-12 | Smith & Nephew Plc | Flexible port used to connect a wound dressing to a source of negative pressure |
USD820990S1 (en) | 2012-05-23 | 2018-06-19 | Smith & Nephew Plc | Medical dressing |
USD806243S1 (en) | 2012-05-23 | 2017-12-26 | Smith & Nephew Plc | Flexible port used to connect a wound dressing to a source of negative pressure |
USD806242S1 (en) | 2012-05-23 | 2017-12-26 | Smith & Nephew Plc | Flexible port used to connect a wound dressing to a source of negative pressure |
US10667955B2 (en) | 2012-08-01 | 2020-06-02 | Smith & Nephew Plc | Wound dressing and method of treatment |
US11864981B2 (en) | 2012-08-01 | 2024-01-09 | Smith & Nephew Plc | Wound dressing and method of treatment |
US10076449B2 (en) | 2012-08-01 | 2018-09-18 | Smith & Nephew Plc | Wound dressing and method of treatment |
USD914887S1 (en) | 2012-08-01 | 2021-03-30 | Smith & Nephew Plc | Wound dressing |
US11801338B2 (en) | 2012-08-01 | 2023-10-31 | Smith & Nephew Plc | Wound dressing and method of treatment |
US11439741B2 (en) | 2013-05-10 | 2022-09-13 | Smith & Nephew Plc | Fluidic connector for irrigation and aspiration of wounds |
US10010658B2 (en) | 2013-05-10 | 2018-07-03 | Smith & Nephew Plc | Fluidic connector for irrigation and aspiration of wounds |
US11123472B2 (en) | 2015-03-04 | 2021-09-21 | Viaderm, Llc | Vacuum assisted skin penetrating appliance with external interface |
WO2016141291A1 (en) * | 2015-03-04 | 2016-09-09 | Viaderm, Llc | Vacuum assisted skin penetrating appliance with external interface |
US11007085B2 (en) | 2015-04-02 | 2021-05-18 | Thomas R. Galbierz | Adhesive therapeutic cover |
WO2016160997A1 (en) * | 2015-04-02 | 2016-10-06 | Galbierz Thomas R | Adhesive therapeutic cover |
US11154649B2 (en) | 2015-05-18 | 2021-10-26 | Smith & Nephew Plc | Fluidic connector for negative pressure wound therapy |
US10076594B2 (en) | 2015-05-18 | 2018-09-18 | Smith & Nephew Plc | Fluidic connector for negative pressure wound therapy |
US11123215B2 (en) | 2016-08-16 | 2021-09-21 | Renuka Pradhan | Pressure relief apparatus for wound |
WO2018101846A1 (en) * | 2016-12-01 | 2018-06-07 | Kossak Tomasz | Dressing for the control of severe bleeding |
US11607346B2 (en) | 2017-11-01 | 2023-03-21 | Smith & Nephew Plc | Dressing for negative pressure wound therapy with filter |
US11819386B2 (en) | 2018-07-12 | 2023-11-21 | T.J.Smith And Nephew, Limited | Apparatuses and methods for negative pressure wound therapy |
US12016993B2 (en) | 2020-01-15 | 2024-06-25 | T.J.Smith And Nephew, Limited | Fluidic connectors for negative pressure wound therapy |
Also Published As
Publication number | Publication date |
---|---|
CN102370545A (en) | 2012-03-14 |
US20120041403A1 (en) | 2012-02-16 |
EP2417947A1 (en) | 2012-02-15 |
US8795247B2 (en) | 2014-08-05 |
CN102370545B (en) | 2016-06-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8795247B2 (en) | Integrated contoured negative pressure bandages | |
US10898624B2 (en) | Limited-access, reduced-pressure systems and methods | |
US10744238B2 (en) | Drainage device particularly for aspiration in case of therapies with aspiration, fistulas, dehiscences of surgical wounds, bedsores, traumas and similar lesions | |
US20140343517A1 (en) | Negative Pressure Foot Bandage | |
US8083712B2 (en) | Flat-hose assembly for wound drainage system | |
US8439894B1 (en) | Negative pressure bandage with internal storage chamber | |
US8425478B2 (en) | Multi-layer dressings, systems, and methods for applying reduced pressure at a tissue site | |
US20140283847A1 (en) | Negative pressure wound treatment dressings and systems | |
US20100191197A1 (en) | Flanged Connector for Wound Therapy | |
KR20110083691A (en) | Open-cavity, reduced-pressure treatment devices and systems | |
CA2586650A1 (en) | Device for the treatment of wounds using a vacuum |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |