US3596657A - Thermally conductive surgical dressing - Google Patents

Thermally conductive surgical dressing Download PDF

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US3596657A
US3596657A US799471A US3596657DA US3596657A US 3596657 A US3596657 A US 3596657A US 799471 A US799471 A US 799471A US 3596657D A US3596657D A US 3596657DA US 3596657 A US3596657 A US 3596657A
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thermally conductive
surgical dressing
gauze
fibrous material
yarns
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William Eidus
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F7/00Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F7/02Compresses or poultices for effecting heating or cooling
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/02Adhesive bandages or dressings
    • A61F13/0203Adhesive bandages or dressings with fluid retention members
    • A61F13/0206Adhesive bandages or dressings with fluid retention members with absorbent fibrous layers, e.g. woven or non-woven absorbent pads or island dressings
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/534Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F7/00Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F7/02Compresses or poultices for effecting heating or cooling
    • A61F2007/0244Compresses or poultices for effecting heating or cooling with layers
    • A61F2007/0246Compresses or poultices for effecting heating or cooling with layers with a layer having high heat transfer capability
    • A61F2007/0247Using a substance with high conductivity
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F2013/00089Wound bandages
    • A61F2013/00187Wound bandages insulating; warmth or cold applying
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F2013/00361Plasters
    • A61F2013/00902Plasters containing means
    • A61F2013/00919Plasters containing means for physical therapy, e.g. cold or magnetic
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/534Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
    • A61F2013/53445Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad from several sheets
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/84Accessories, not otherwise provided for, for absorbent pads
    • A61F2013/8476Accessories, not otherwise provided for, for absorbent pads with various devices or method
    • A61F2013/8479Accessories, not otherwise provided for, for absorbent pads with various devices or method including electric or magnetic devices

Definitions

  • the present invention relates to surgical dressings and more particularly to thermally conductive surgical dressings.
  • Presently known surgical dressing materials include cotton gauze strips, bandages, pads and cotton balls.
  • the primary functions of such presently employed dressings are to provide sterile protection to the applied area and/or to absorb any fluids at the area of the wound or incision.
  • the dressings provide a protective cushion to the affected area to minimize aggravation or pain which would otherwise be caused by pressure on the wound.
  • the aforementioned presently employed surgical dressings have been found satisfactory for the above purposes, in many instances, because of the inherent nature of the dressing materials, the aforementioned conventional dressings prevent the removal of heat from particular body areas, during surgical procedures and during the postoperative period. This is so because the aforementioned surgical dressings act as thermal insulators because the cotton material is itself a very poor conductor of heat and furthermore, because the small air pockets formed between the cotton threads of such dressings are excellent thermal insulators. In fact, materials very similar to the conventional surgical cotton padding is expressly employed for the purpose of providing thermal insulation in clothing. 7
  • thermal blanket In cases of patients with high fevers, it is common medical practice to apply a cold thermal pad or blanket to the patients body in order to reduce the patients temperature. In such cases, because of the thermal barrier presented by conventional sheets or common sterile materials, the thermal blanket is applied directly to the patients body causing the thermal blanket itself to become soiled during this treatment. Accordingly, before use by another patient, the thermal blanket must be laundered and sterilized, a procedure which is time consuming and costly.
  • Another object of the present invention is the provision of a surgical dressing of the character described which provides an even distribution of heat transfer over the area thereof in contact with the body area.
  • a surgical dressing comprising high-absorbency fibrous material in combination with thermally conductive elements distributed throughout said fibrous material to provide a surgical dressing having a high absorbency and uniformly high thermal conductivity.
  • FIG. 1 is a perspective view of a surgical dressing pad made in accordance with the present invention.
  • FIG. 2 is an enlarged plan view of a single strand of yarn for making up the dressing pad of FIG. 1, comprising a fiber strand spun together with a thermally conductive metallic thread.
  • FIG. 3 is a sectional view taken along the line 3-3 of FIG. 1 showing a dressing pad made up of the yarn shown in FIG. 2.
  • FIG. 4 is an enlarged view of a modified form of dressing pad according to the present invention comprising alternate strands of metallic wire and fiber respectively interwoven to form a gauze pad. 7
  • FIG. 5 is a sectional view of another modified form of dressing pad in accordance with the present invention comprising a layer of thermally conductive metal gauze sandwiched between two layers of cotton gauze.
  • FIG. 6 is a sectional view of still another form of dressing pad in accordance with the present invention, comprising a thick wad of absorbent cotton having a thermally conductive metallic wire gauze layer on the top and bottom surfaces thereof.
  • FIG. 7 is a perspective view of an absorbent cotton ball impregnated with thermally conductive metallic particles in accordance with the present invention.
  • FIG. 8 is a sectional view of a dressing pad similar to that of FIG. I, but comprising cotton gauze impregnated with thermally conductive metallic particles.
  • FIG. 9 is an enlarged plan viewof an alternate type of yarn which may be used for making up the dressing pad of FIG. 1, the yarn comprising'a plurality of fiber strands impregnated with thermally conductive metallic particles.
  • FIG. 10 is a sectional view through a strip of adhesive tape impregnated with thermally conductive metallic particles
  • FIG. 11 is a perspective view of a dressing pad similar to that of FIG. I, but provided with strips of adhesive at opposite ends thereof to provide a self-retaining bandage.
  • dressing pad 10 made in accordance with the present invention, for application to the body area of a patient to piovide even and efficient thermal transfer to and from the selected body area.
  • dressing pad 10 may comprise various combinations of conventional fibers such as cotton which provides the required absorbency, and fine metallic wire which provides thermal conductivity in order to facilitate the conduction of heat to or from the body area.
  • dressing pad 10 may comprise various combinations of cotton material and thermally conductive elements.
  • dressing pad 10 comprises yarns l2 cross-woven in the conventional pattern to form a gauze layer I4, with each yarn 12 comprising at least one strand 16 of fiber material spun together with at least one strand of fine metallic wire 13.
  • FIG. 2 shows the intertwisting of one strand of fiber with one strand of metallic wire, however, it is understood that various combinations of different number of fiber strands 16 and metallic strands 18 may be spun together to form a yarn 12, depending on the degree of absorbency and thermal conductivity desired in the dressing pad 14 to be formed thereby.
  • pad 10 will usually comprise a plurality of gauze layers 14 in order to provide sufi'lcient absorbency and/or cushion effect as needed.
  • a surgical dressing pad 20 in accordance with the present invention may comprise a pair of layers 22 of conventional fiber gauze having sandwiched therebetween at least one layer 24 of gauze made up of interwoven strands of fine metal wire 26. It is understood that although FIG. 4 shows a single metallic layer 24 between two fiber layers 22, it is understood that pad 20 may comprise various numbers of alternate layers 22 and 24 depending on the degree of absorbency and thermal conductivity desired in pad 20.
  • a surgical dressing 28 may comprise a thick wad 30 of absorbent cotton having a layer 32 of metallic gauze on the top and bottom surfaces of the wad 30 for use in those cases where a high degree of absorbency is required while providing greatly improved thermal conductivity characteristics over the conventional cotton wad.
  • Conventional cotton wadding such as in the form of balls are excellent means for absorbing body secretions and for serving to protect a wound area from impact or further injury.
  • such known cotton balls serve to thermally insulate the body area to which they are applied, a condition which in some instances, as pointed out above, is deleterious to rapid healing of the wound and which interferes with treatment involving removal of heat from the affected area.
  • the wound must be dressed with highabsorbency bandages, in another embodiment of the present invention, as shown in FIG. 7, a wad of absorbent cotton in the form of a ball 34 is impregnated with thermally conductive metallic particles 36.
  • thermally conductive metallic particles 36 serve to provide a thermal conduction path through cotton ball 34 to improve the thermal conductivity thereof while essentially maintaining its high-absorbency characteristics.
  • a cotton gauze pad 35 may be impregnated with thermally conductive metallic particles 37.
  • the above-described principle of the present invention i.e. impregnation of conventional absorbent cotton dressings with highly conductive particles to improve the thermal conductivity thereof, is'implemented in yet another embodiment of the present invention, by impregnating individual cotton yarns 38 with thermally conductive particles 40 as depicted in FIG. 9.
  • the impregnated yarn 38 may be interwoven to form layers of gauze in the manner shown in FIG. 3, and may be combined with other layers, for example with layers of gauze comprising either pure cotton such as layers 22 in FIG. 5, or with layers of wire gauze such as the layers 24 in FIG. 5, to provide a dressing having the desired degree of absorbency and heat transfer characteristics.
  • FIG. 10 there is provided a strip of adhesive tape 42 having fine thermally conductive metallic particles 44 impregnated therein.
  • thermally conductive particles 44 do not materially interfere with the adhesive action of tape 42 yet provide improved thermal conduction through the tape 42, and accordingly when the tape is used in conjunction with any of the other dressings of the present invention described above, it substantially improves and facilitates heat transfer to and from the body area during the course of heat or refrigeration treatment.
  • narrow strips of such thermally conductive adhesive tape 42 may be secured to opposite edges of a dressing pad 48 constructed in accordance with any of the embodiments of the present invention described herein.
  • each gauze layer 14 may comprise alternate strands of fiber 19, such as cotton, and fine metal wire 21 which strands are interwoven to form gauze layer 14 which retains an adequate measure of absorbency due to fiber strands 19 while providing a greatly increased thermal conductivity due to the high thermal conductivity of metallic strands 21.
  • the cross weave configurations of strands l9 and 21 insures an even thermal distribution throughout gauze layer 14.
  • several layers of gauze 14 may be suitably arranged in a stack to form a pad 10 of suitable absorbency and thermal conductivity.
  • thermally conductive gauze materials ductive, absorbent, sterile and disposable individually available dressings thereby avoiding the awkwardness or embarrassment of exposure which would otherwise obtain as in the case of group hydrotherapy where several patients are present.
  • a thermally conductive surgical dressing comprising a body of fibrous material having high liquid absorbency, said body having a first surface and a second surface, a plurality of thermally conductive elements distributed throughout said high-absorbency fibrous material between said surfaces, said thermally conductive elements being arranged to establish a heat conductive path through said body between the inner and outer surfaces thereof, to thereby provide a surgical dressing having a high liquid absorbency and uniformly high thermal conductivity.
  • a surgical dressing according to claim 1 which includes yarns interwoven to form a layer of gauze, wherein each of said yarns comprises at least one strand of highly absorbent fibrous material and at least one strand of a high thermally conductive metal spun together to form said yarns.
  • a surgical dressing according to claim 1 which includes a least one layer of gauze formed of alternately interwoven yarns of highly absorbent fibrous material and yarns of thermally conductive fine metallic strands.
  • a surgical dressing according to claim I which includes at least one layer of gauze formed of interwoven fibrous yarns having a high degree of absorbency, and particles of thermally conductive particles impregnated in said yarns.
  • a surgical dressing according to claim 1 which includes alternate layers of thermally conductive fine wire mesh gauze and absorbent fibrous gauze.
  • a surgical dressing according to claim 1 which includes a wad of highly absorbent fibrous material impregnated with thermally conductive metallic particles.
  • a surgical dressing according to claim 1 which includes at least one adhesive strip secured to said surgical dressing, said adhesive strip including thermally conductive metallic particles impregnated therein.
  • a surgical dressing according to claim 1 which includes a thick layer of highly absorbent fibrous material and at least one layer of thermally conductive metallic gauze on each of the top and bottom surfaces of said layer of fibrous material.

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  • Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
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  • Heart & Thoracic Surgery (AREA)
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Abstract

Surgical dressings comprising a combination of conventional cotton gauze materials and thermally conductive elements interwoven or impregnated in the cotton gauze materials to provide a surgical dressing having an adequately high degree of absorbency and excellent thermal conductivity to facilitate cooling or heat treatment to body areas while bandaged.

Description

United States Patent [72] Inventor William Eidus 2 Essex Lane, Suffern, N.Y. 10901 [21 AppLNo. 799,471 [22] Filed Feb. 14, 1969 [45] Patented Aug. 3, 1971 [54] THERMALLY CONDUCTIVE SURGICAL DRESSING 10 Claims, 1 1 Drawing Figs.
128/82.l,128/268, 161/95 [51] Int. Cl A611 15/00 [501 FieldolSurch 128/155, 156, 284, 290, 296, 416, 268, 82,1; 161/93, 95
[56] References Cited UNITED STATES PATENTS 683,098 9/1901 Baecker 128/416 X 700,915 5/1902 Hannel 128/416 X Primary Examiner- Dalton L. Truluck Attorney-Edward F. Levy ABSTRACT: Surgical dressings comprising a combination of conventional cotton gauze materials and thermally conductive 4 elements interwoven or impregnated in the cotton gauze materials to provide a surgical dressing having an adequately high degree of absorbency and excellent thermal conductivity to facilitate cooling or heat treatment to body areas while bandaged.
.PATENTEU MIR 3 new Pmnmw mm y VIIIIIIIMIIIQ'MMA ATTORNEY 'IIIERMALLY CONDUCTIVE SURGICAL DRESSING The present invention relates to surgical dressings and more particularly to thermally conductive surgical dressings.
Presently known surgical dressing materials include cotton gauze strips, bandages, pads and cotton balls. The primary functions of such presently employed dressings are to provide sterile protection to the applied area and/or to absorb any fluids at the area of the wound or incision. In some cases the dressings provide a protective cushion to the affected area to minimize aggravation or pain which would otherwise be caused by pressure on the wound.
Although the aforementioned presently employed surgical dressings have been found satisfactory for the above purposes, in many instances, because of the inherent nature of the dressing materials, the aforementioned conventional dressings prevent the removal of heat from particular body areas, during surgical procedures and during the postoperative period. This is so because the aforementioned surgical dressings act as thermal insulators because the cotton material is itself a very poor conductor of heat and furthermore, because the small air pockets formed between the cotton threads of such dressings are excellent thermal insulators. In fact, materials very similar to the conventional surgical cotton padding is expressly employed for the purpose of providing thermal insulation in clothing. 7
Many instances of medical treatment require the direct application of cooling packs or instruments to specific body areas for purposes such as reduction of pain, retarding swelling or edema due to injury, and to check bleeding. Clearly, since the conventional surgical dressings are poor thermal conductors, where the affected body area must be bandaged, the transmission of heat from the body area is very slow and inefficient.
Conversely, in those instances where it is desirable to apply heat to a body area that must remain bandaged, it is very difficult to transmit heat efficiently and evenly through the bandages and to the desired body area due to the poor thermal transfer characteristics of such conventional surgical dressing materials.
In cases of patients with high fevers, it is common medical practice to apply a cold thermal pad or blanket to the patients body in order to reduce the patients temperature. In such cases, because of the thermal barrier presented by conventional sheets or common sterile materials, the thermal blanket is applied directly to the patients body causing the thermal blanket itself to become soiled during this treatment. Accordingly, before use by another patient, the thermal blanket must be laundered and sterilized, a procedure which is time consuming and costly.
Furthennore, in the case of hydrotherapy treatments, since the patient must be in a disrobed condition for efficient application of cold, in order to maintain privacy the hydrotherapy apparatus is usable only in the presence of one patient at a time.
It is therefore an object of the present invention to provide a disposable surgical dressing having highly improved thermal conduction characteristics.
Another object of the present invention is the provision of a surgical dressing of the character described which provides an even distribution of heat transfer over the area thereof in contact with the body area.
In accordance with the principles of the present invention, there is provided a surgical dressing comprising high-absorbency fibrous material in combination with thermally conductive elements distributed throughout said fibrous material to provide a surgical dressing having a high absorbency and uniformly high thermal conductivity.
Additional objects and advantages of the present invention will become apparent during the course of the following specification when taken in connection with the accompanying drawings in which:
FIG. 1 is a perspective view of a surgical dressing pad made in accordance with the present invention.
FIG. 2 is an enlarged plan view of a single strand of yarn for making up the dressing pad of FIG. 1, comprising a fiber strand spun together with a thermally conductive metallic thread.
FIG. 3 is a sectional view taken along the line 3-3 of FIG. 1 showing a dressing pad made up of the yarn shown in FIG. 2.
FIG. 4 is an enlarged view of a modified form of dressing pad according to the present invention comprising alternate strands of metallic wire and fiber respectively interwoven to form a gauze pad. 7
FIG. 5 is a sectional view of another modified form of dressing pad in accordance with the present invention comprising a layer of thermally conductive metal gauze sandwiched between two layers of cotton gauze.
FIG. 6 is a sectional view of still another form of dressing pad in accordance with the present invention, comprising a thick wad of absorbent cotton having a thermally conductive metallic wire gauze layer on the top and bottom surfaces thereof. a
FIG. 7 is a perspective view of an absorbent cotton ball impregnated with thermally conductive metallic particles in accordance with the present invention. v
, FIG. 8 is a sectional view of a dressing pad similar to that of FIG. I, but comprising cotton gauze impregnated with thermally conductive metallic particles.
FIG. 9 is an enlarged plan viewof an alternate type of yarn which may be used for making up the dressing pad of FIG. 1, the yarn comprising'a plurality of fiber strands impregnated with thermally conductive metallic particles.
FIG. 10 is a sectional view through a strip of adhesive tape impregnated with thermally conductive metallic particles, and
FIG. 11 is a perspective view of a dressing pad similar to that of FIG. I, but provided with strips of adhesive at opposite ends thereof to provide a self-retaining bandage.
Referring in detail to the drawings, and in particular to FIG. 1 thereof, there is shown a surgical dressing pad 10 made in accordance with the present invention, for application to the body area of a patient to piovide even and efficient thermal transfer to and from the selected body area. As will hereinafter become clear, dressing pad 10 may comprise various combinations of conventional fibers such as cotton which provides the required absorbency, and fine metallic wire which provides thermal conductivity in order to facilitate the conduction of heat to or from the body area. Dressing pad 10 may comprise various combinations of cotton material and thermally conductive elements.
Referring to FIGS. 2 and 3, in one embodiment, dressing pad 10 comprises yarns l2 cross-woven in the conventional pattern to form a gauze layer I4, with each yarn 12 comprising at least one strand 16 of fiber material spun together with at least one strand of fine metallic wire 13. FIG. 2 shows the intertwisting of one strand of fiber with one strand of metallic wire, however, it is understood that various combinations of different number of fiber strands 16 and metallic strands 18 may be spun together to form a yarn 12, depending on the degree of absorbency and thermal conductivity desired in the dressing pad 14 to be formed thereby. In practice, pad 10 will usually comprise a plurality of gauze layers 14 in order to provide sufi'lcient absorbency and/or cushion effect as needed.
Referring to FIG. 5, in another embodiment of the present invention, a surgical dressing pad 20 in accordance with the present invention may comprise a pair of layers 22 of conventional fiber gauze having sandwiched therebetween at least one layer 24 of gauze made up of interwoven strands of fine metal wire 26. It is understood that although FIG. 4 shows a single metallic layer 24 between two fiber layers 22, it is understood that pad 20 may comprise various numbers of alternate layers 22 and 24 depending on the degree of absorbency and thermal conductivity desired in pad 20.
In another embodiment of the present invention, as shown in FIG. 6, a surgical dressing 28 may comprise a thick wad 30 of absorbent cotton having a layer 32 of metallic gauze on the top and bottom surfaces of the wad 30 for use in those cases where a high degree of absorbency is required while providing greatly improved thermal conductivity characteristics over the conventional cotton wad.
Conventional cotton wadding such as in the form of balls are excellent means for absorbing body secretions and for serving to protect a wound area from impact or further injury. However, such known cotton balls serve to thermally insulate the body area to which they are applied, a condition which in some instances, as pointed out above, is deleterious to rapid healing of the wound and which interferes with treatment involving removal of heat from the affected area. Keeping in mind that in such cases, the wound must be dressed with highabsorbency bandages, in another embodiment of the present invention, as shown in FIG. 7, a wad of absorbent cotton in the form of a ball 34 is impregnated with thermally conductive metallic particles 36. In this way, the thermally conductive metallic particles 36 serve to provide a thermal conduction path through cotton ball 34 to improve the thermal conductivity thereof while essentially maintaining its high-absorbency characteristics. In a similar fashion as shown in FIG. 8, a cotton gauze pad 35 may be impregnated with thermally conductive metallic particles 37.
The above-described principle of the present invention, i.e. impregnation of conventional absorbent cotton dressings with highly conductive particles to improve the thermal conductivity thereof, is'implemented in yet another embodiment of the present invention, by impregnating individual cotton yarns 38 with thermally conductive particles 40 as depicted in FIG. 9. The impregnated yarn 38 may be interwoven to form layers of gauze in the manner shown in FIG. 3, and may be combined with other layers, for example with layers of gauze comprising either pure cotton such as layers 22 in FIG. 5, or with layers of wire gauze such as the layers 24 in FIG. 5, to provide a dressing having the desired degree of absorbency and heat transfer characteristics.
It is understood that in many cases, surgical dressings must be secured by means of adhesive tape or the like. However, conventional adhesive tapes used for such purposes have very poor heat transfer properties and serve to aggravate the problem of heat transfer to and from the body area. Accordingly, in a further embodiment of the present invention shown in FIG. 10, there is provided a strip of adhesive tape 42 having fine thermally conductive metallic particles 44 impregnated therein. Such thermally conductive particles 44 do not materially interfere with the adhesive action of tape 42 yet provide improved thermal conduction through the tape 42, and accordingly when the tape is used in conjunction with any of the other dressings of the present invention described above, it substantially improves and facilitates heat transfer to and from the body area during the course of heat or refrigeration treatment. By way of example, as shown in FIG. 11, narrow strips of such thermally conductive adhesive tape 42 may be secured to opposite edges of a dressing pad 48 constructed in accordance with any of the embodiments of the present invention described herein.
In another embodiment of the dressing pad 10, as shown in FIG. 4, each gauze layer 14 may comprise alternate strands of fiber 19, such as cotton, and fine metal wire 21 which strands are interwoven to form gauze layer 14 which retains an adequate measure of absorbency due to fiber strands 19 while providing a greatly increased thermal conductivity due to the high thermal conductivity of metallic strands 21. F urthermore, the cross weave configurations of strands l9 and 21 insures an even thermal distribution throughout gauze layer 14. Again it is understood that in many instances several layers of gauze 14 may be suitably arranged in a stack to form a pad 10 of suitable absorbency and thermal conductivity.
Further, the thermally conductive gauze materials ductive, absorbent, sterile and disposable individually available dressings thereby avoiding the awkwardness or embarrassment of exposure which would otherwise obtain as in the case of group hydrotherapy where several patients are present.
While preferred embodiments of the invention have been shown and described herein, it is obvious that numerous omissions, changes and additions may be made in such embodiments without departing from the spirit and scope of the invention.
What I claim is:
l. A thermally conductive surgical dressing comprising a body of fibrous material having high liquid absorbency, said body having a first surface and a second surface, a plurality of thermally conductive elements distributed throughout said high-absorbency fibrous material between said surfaces, said thermally conductive elements being arranged to establish a heat conductive path through said body between the inner and outer surfaces thereof, to thereby provide a surgical dressing having a high liquid absorbency and uniformly high thermal conductivity.
2. A surgical dressing according to claim 1 which includes yarns interwoven to form a layer of gauze, wherein each of said yarns comprises at least one strand of highly absorbent fibrous material and at least one strand of a high thermally conductive metal spun together to form said yarns.
3. A surgical dressing according to claim 1 which includes a least one layer of gauze formed of alternately interwoven yarns of highly absorbent fibrous material and yarns of thermally conductive fine metallic strands.
4. A surgical dressing according to claim I which includes at least one layer of gauze formed of interwoven fibrous yarns having a high degree of absorbency, and particles of thermally conductive particles impregnated in said yarns.
5. A surgical dressing according to claim 1 which includes alternate layers of thermally conductive fine wire mesh gauze and absorbent fibrous gauze.
6. A surgical dressing according to claim 1 which includes a wad of highly absorbent fibrous material impregnated with thermally conductive metallic particles.
7. A surgical dressing according to claim 1 which includes at least one adhesive strip secured to said surgical dressing, said adhesive strip including thermally conductive metallic particles impregnated therein.
8. A surgical dressing according to claim 1 which includes a thick layer of highly absorbent fibrous material and at least one layer of thermally conductive metallic gauze on each of the top and bottom surfaces of said layer of fibrous material.
9. A surgical dressing according to claim 1 wherein said fibrous material comprises cotton.
10. An article of clothing formed of the material comprising surgical dressing according to claim 1.

Claims (10)

1. A thermally conductive surgical dressing comprising a body of fibrous material having high liquid absorbency, said body having a first surface and a second surface, a plurality of thermally conductive elements distributed throughout said high-absorbency fibrous material between said surfaces, said thermally conductive elements being arranged to establish a heat conductive path through said body between the inner and outer surfaces thereof, to thereby provide a surgical dressing having a high liquid absorbency and uniformly high thermal conductivity.
2. A surgical dressing according to claim 1 which includes yarns interwoven to form a layer of gauze, wherein each of said yarns comprises at least one strand of highly absorbent fibrous material and at least one strand of a high thermally conductive metal spun together to form said yarns.
3. A surgical dressing according to claim 1 which includes a least one layer of gauze formed of alternately interwoven yarns of highly absorbent fibrous material and yarns of thermally conductive fine metallic strands.
4. A surgical dressing according to claim 1 which includes at least one layer of gauze formed of interwoven fibrous yarns having a high degree of absorbency, and particles of thermally conductive particles impregnated in said yarns.
5. A surgical dressing according to claim 1 which includes alternate layers of thermally conductive fine wire mesh gauze and absorbent fibrous gauze.
6. A surgical dressing according to claim 1 which includes a wad of highly absorbent fibrous material impregnated with thermally conductive metallic particles.
7. A surgical dressing according to claim 1 which includes at least one adhesive strip secured to said surgical dressing, said adhesive strip including thermally conductive metallic particles impregnated therein.
8. A surgical dressing according to claim 1 which includes a thick layer of highly absorbent fibrous material and at least one layer of thermally conductive metallic gauze on each of the top and bottom surfaces of said layer of fibrous material.
9. A surgical dressing according to claim 1 wherein said fibrous material comprises cotton.
10. An article of clothing formed of the material comprising surgical dressing according to claim 1.
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US7230153B2 (en) 1997-09-22 2007-06-12 Argentum International, Llc Multilayer conductive appliance having wound healing and analgesic properties
US7291762B2 (en) 1997-09-22 2007-11-06 Argentum International, Llc Multilayer conductive appliance having wound healing and analgesic properties
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US20130005208A1 (en) * 2011-06-30 2013-01-03 The Boeing Company Electrically conductive structure
US8530720B2 (en) 2011-07-29 2013-09-10 Aluminaid International Ag Thermally conductive, metal-based bandages to aid in medical healing and methods of use
US20150242001A1 (en) * 2014-02-26 2015-08-27 Dimitrije Stojanovski Electrically conductive bandage for use with touchscreen devices
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US11471076B2 (en) 2016-01-14 2022-10-18 Smith & Nephew Plc Device and kit for indicating a pH at a locus
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US6213966B1 (en) 1992-06-19 2001-04-10 Augustine Medical, Inc. Normothermic tissue heating wound covering
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US5431622A (en) * 1992-08-10 1995-07-11 Okanagan House Inc. Thermal bandage
US5300103A (en) * 1992-09-24 1994-04-05 Hollister Incorporated Thermal blanket and absorbent interfacing pad therefor
US6407307B1 (en) 1993-06-18 2002-06-18 Augustine Medical, Inc. Near hyperthermic heater covering
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US6267740B1 (en) 1994-11-21 2001-07-31 Augustine Medical, Inc. Flexible non-contact wound treatment device with a single joint
US6293917B1 (en) 1994-11-21 2001-09-25 Augustine Medical, Inc. Wound treatment device for attachment to skin
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US6093160A (en) * 1994-11-21 2000-07-25 Augustine Medical, Inc. Flexible non-contact wound treatment device
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US6580012B1 (en) 1994-11-21 2003-06-17 Augustine Medical, Inc. Flexible non-contact wound treatment device
US6010527A (en) * 1994-11-21 2000-01-04 Augustine Medical, Inc. Wound treatment device
US6987209B2 (en) 1994-11-21 2006-01-17 Arizant Healthcare Inc. Flexible non-contact wound treatment device
US7122046B2 (en) 1994-11-21 2006-10-17 Arizant Technologies Llc Treatment device
US5964721A (en) * 1995-02-21 1999-10-12 Augustine Medical, Inc. Wound covering
US5947914A (en) * 1995-02-21 1999-09-07 Augustine Medical, Inc. Wound covering
US8283513B2 (en) 1995-09-05 2012-10-09 Argentum Medical, Llc Multilayer wound dressing
US8118791B2 (en) 1995-09-05 2012-02-21 Argentum Medical, Llc Medical device
US7005556B1 (en) 1995-09-05 2006-02-28 Argentum Medical Multilayer wound dressing
US8801681B2 (en) 1995-09-05 2014-08-12 Argentum Medical, Llc Medical device
US8293964B2 (en) 1995-09-05 2012-10-23 Argentum Medical, Llc Multilayer laminate wound dressing
US7291762B2 (en) 1997-09-22 2007-11-06 Argentum International, Llc Multilayer conductive appliance having wound healing and analgesic properties
US20040030276A1 (en) * 1997-09-22 2004-02-12 Flick Bart A. Conductive wound dressings and methods of use
US20080064997A1 (en) * 1997-09-22 2008-03-13 Argentum International, Llc. Conductive wound dressings and methods of use
US8455710B2 (en) 1997-09-22 2013-06-04 Argentum Medical, Llc Conductive wound dressings and methods of use
US8449514B2 (en) * 1997-09-22 2013-05-28 Argentum Medical, Llc Conductive wound dressings and methods of use
US7989674B2 (en) 1997-09-22 2011-08-02 Argentum Medical, Llc Multilayer conductive appliance having wound healing and analgesic properties
US8093444B2 (en) 1997-09-22 2012-01-10 Argentum Medical, 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
US7230153B2 (en) 1997-09-22 2007-06-12 Argentum International, Llc Multilayer conductive appliance having wound healing and analgesic properties
US6413889B1 (en) * 1999-03-03 2002-07-02 Thomas Josef Heimbach Gesellschaft Mit Beschrankter Haftung & Co. Pressing cushion
WO2003090654A1 (en) * 2002-04-23 2003-11-06 Argentum Research, Inc. Conductive wound dressings and methods of use
US8147246B2 (en) * 2005-03-28 2012-04-03 Neubardt Seth L Surgical bone wax applicator
US20060216671A1 (en) * 2005-03-28 2006-09-28 Neubardt Seth L Surgical bone wax applicator
US20090282908A1 (en) * 2008-05-09 2009-11-19 Thermogear, Inc. Electrifiable fabric
WO2011023650A1 (en) 2009-08-24 2011-03-03 Birgit Riesinger Wound care article comprising an active element that can be plastically deformed or moulded
US20130005208A1 (en) * 2011-06-30 2013-01-03 The Boeing Company Electrically conductive structure
US9108387B2 (en) * 2011-06-30 2015-08-18 The Boeing Company Electrically conductive structure
US8530720B2 (en) 2011-07-29 2013-09-10 Aluminaid International Ag Thermally conductive, metal-based bandages to aid in medical healing and methods of use
US9271875B2 (en) 2011-07-29 2016-03-01 Harrisburg (B.V.I.) Limited Thermally conductive, metal-based bandages to aid in medical healing and methods of use
US20160100987A1 (en) * 2013-05-24 2016-04-14 Smith & Nephew Plc Moisture indicating system
US20150242001A1 (en) * 2014-02-26 2015-08-27 Dimitrije Stojanovski Electrically conductive bandage for use with touchscreen devices
US11471076B2 (en) 2016-01-14 2022-10-18 Smith & Nephew Plc Device and kit for indicating a pH at a locus
US11504033B2 (en) 2016-01-14 2022-11-22 Smith & Nephew Plc Polymer materials

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