US3292619A - Absorbent dressing - Google Patents
Absorbent dressing Download PDFInfo
- Publication number
- US3292619A US3292619A US328553A US32855363A US3292619A US 3292619 A US3292619 A US 3292619A US 328553 A US328553 A US 328553A US 32855363 A US32855363 A US 32855363A US 3292619 A US3292619 A US 3292619A
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- United States
- Prior art keywords
- film
- depressions
- pad
- dressing
- openings
- 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.)
- Expired - Lifetime
Links
- 230000002745 absorbent Effects 0.000 title claims description 30
- 239000002250 absorbent Substances 0.000 title claims description 30
- 239000000463 material Substances 0.000 claims description 20
- 230000000994 depressogenic effect Effects 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 239000012815 thermoplastic material Substances 0.000 claims description 2
- 239000010408 film Substances 0.000 description 49
- 206010052428 Wound Diseases 0.000 description 11
- 208000027418 Wounds and injury Diseases 0.000 description 11
- 239000012530 fluid Substances 0.000 description 7
- 230000001464 adherent effect Effects 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 210000000416 exudates and transudate Anatomy 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- DHZSIQDUYCWNSB-UHFFFAOYSA-N chloroethene;1,1-dichloroethene Chemical compound ClC=C.ClC(Cl)=C DHZSIQDUYCWNSB-UHFFFAOYSA-N 0.000 description 1
- HGAZMNJKRQFZKS-UHFFFAOYSA-N chloroethene;ethenyl acetate Chemical compound ClC=C.CC(=O)OC=C HGAZMNJKRQFZKS-UHFFFAOYSA-N 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000036573 scar formation Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Images
Classifications
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- A61F13/01021—
-
- 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
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/15577—Apparatus or processes for manufacturing
- A61F13/15707—Mechanical treatment, e.g. notching, twisting, compressing, shaping
- A61F13/15731—Treating webs, e.g. for giving them a fibrelike appearance, e.g. by embossing
-
- 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
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent 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 outer layers
- A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
- A61F13/51104—Topsheet, i.e. the permeable cover or layer facing the skin the top sheet having a three-dimensional cross-section, e.g. corrugations, embossments, recesses or projections
-
- 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
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent 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 outer layers
- A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
- A61F13/512—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its apertures, e.g. perforations
-
- 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
- A61F2013/00246—Wound bandages in a special way pervious to air or vapours
- A61F2013/00251—Wound bandages in a special way pervious to air or vapours with macroscopic openings
-
- 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
- A61F2013/00314—Wound bandages with surface treatments
- A61F2013/00327—Wound bandages with surface treatments to create projections or depressions in surface
-
- 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
- A61F2013/00727—Plasters means for wound humidity control
- A61F2013/00731—Plasters means for wound humidity control with absorbing pads
-
- 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
- A61F2013/00855—Plasters pervious to air or vapours
- A61F2013/00859—Plasters pervious to air or vapours with macroscopic openings
-
- 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
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent 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 outer layers
- A61F2013/51078—Absorbent 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 outer layers being embossed
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
- Y10T428/24322—Composite web or sheet
- Y10T428/24331—Composite web or sheet including nonapertured component
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
- Y10T428/24521—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness with component conforming to contour of nonplanar surface
- Y10T428/24537—Parallel ribs and/or grooves
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
- Y10T428/24521—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness with component conforming to contour of nonplanar surface
- Y10T428/24554—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness with component conforming to contour of nonplanar surface including cellulosic or natural rubber component
Definitions
- This invention is directed to a non-adherent dressing in which only portions of the surface on the body side thereof are in contact with the body when applied to cover a wound therein.
- the surface of sites of fiuid intake in the dressing is spaced from the surface of the body.
- only a minor portion of the total surface area of the body-side of the dressing is in contact with the body.
- the body-side of a dressing is, of course, the side thereof placed toward the body over the wound.
- the major sites of fluid intake into the absorbent pad in accordance with this invention are located in depressions in the surface of the body-side of the dressing.
- the walls of the depressions slope inwardly into the body of the dressing and are lined with a thin film which covers the surface of the pad at the body-side of the dressing.
- the film lining the walls of the depressions is perforated, each depressed film portion containing a plurality of openings through which fluid exudate of the wound passes for absorption into the absorbent material located at the openings.
- the size of the openings and the number thereof in the film on the body-side of the dressing required for ready passage of wound exudate therethrough and into the absorbent material are well known and suitable sizes and numbers of openings in the dressings of this invention may be chosen in accordance therewith.
- each opening is such that the open area thereof is equivalent to circular openings having a diameter of from about 0.008 to 0.2 inch.
- the total open area of the film at least in the portion thereof directly overlying the wound site should be from about 0.25 to 25% of the film area.
- a predominantly major portion, if not all, of the open area of the film is located in the film portions lining the walls of the depressions.
- FIGS. 1 and 2 are top and cross-sectional, partly perspective, views, respectively, of an absorbent dressing of this invention in which the numeral 1 designates the film covering a pad 2 of absorbent material.
- the film 1 lines the walls 3 of the generally concave depressions 4 and extends over the raised portions 5 bordering the depressions.
- each of the depressions 4 is bordered on all sides thereof by continuous raised portions 5.
- the raised portions 5 need not be continuous, but may be intermittent; for example, channels may traverse portions 5 to interconnect the depressions.
- the walls 3 of the depressions 4 slope inwardly from the top surface of'the raised portions 5 into the body of the pad 2.
- the portion of the wall 3 furthermost recessed from the top surface of the dressing (surface of portion 5) is located substantially centrally in the depression 4.
- This bottom portion of the film is perforated with an opening 6 through which is exposed absorbent material of the pad 2 located directly thereunder.
- the film lining the sloping portions of the wall 3 is perforated with a plurality of openings 7 usually smaller in size than the bottom opening 6.
- the openings 7 need not be arranged in any particular pattern in the wall 3 but generally should be distributed throughout the wall surface.
- the number of holes 7 in each depression may vary from about 3 to 10 or more, depending upon hole size, for rapid take-up of fluid and efficient distribution of the fluid into the pad 2.
- the film 1 is adhered to the pad 2 at least at the peripheral edges of the openings 6 and 7.
- Adherence at these edges keeps the portions of the pad 2 at these openings at the plane of the openings readily available for absorbing fluid entering the depressions.
- the absorbent material in and at the openings helps to overcome any resistance a fluid may have in passing into the openings 6 and 7.
- Adherenoe at these edges between the pad and film also helps to maintain the walls 3 depressed, recessed from a plane common to the top surface of portions 5 of the film. Positive and maximum retention of the depressions is possible in accordance with this invention by lamination of the film to the pad substantially throughout the interface between the film and pad.
- FIG. 3 A one-stage process for the manufacture of dressings in which the film covering is laminated to the pad while forming the depressions in the covered surface of the'pad and also forming openings in the film portions lining the depressions is schematically illustrated in FIG. 3.
- a flexible imperforate film 1 is placed upon a pad 2 of absorbent material and the composite thereof is passed through a nip between the surfaces 12 of the bosses 11 on the pattern roll 10 and the smooth surface of roll 14.
- the rolls 10 and 14 are urged together (by means not shown) with suflicient force to compress the portion of film 1 and underlying portion of pad 2 at the aforedescribed nip to form the depressions 4 in the film covered surface of the pad.
- the bosses 11 are heated, for example by an electric heater coil in the body of pattern roll 10, to a temperature sufficient to soften the depressed portions of the plastic film 1 and conform to and line the walls of the depressions simultaneously made in the pad 2.
- the smooth roll 14 is also heated, preferably to a temperature less than that of the pattern roll 10.
- the temperature of the two rolls and the temperature differential necessary to produce the dressings of this invention are dependent on a number of factors, including, of course, the softening and melting points of the thermoplastic film, the nature of the absorbent material, the pressure exerted at the nip of the two rolls and the rate at which the dressing is passed through the nip. This is illustrated in the following example.
- a dressing was prepared having approximately 375 depressions per square inch of fihn-covered surface of the dressing.
- the apparatus employed to make the dressing was a pattern roll containing four-sided bosses approximately 0.017 inch high, the top surface (12, in the drawings) having roughly a parallelogram configuration measuring about 0.025 inch by 0.015 inch.
- the bosses were arranged in rows across the width of the roll, the bosses in each row being offset from the bosses in the next adjacent rows to present a staggered boss pattern.
- the rolls were independently heated, the pattern roll to a temperature of about 250 F. to 260 F. and the smooth roll to a temperature of about 150 F. to 175' F.
- a low density polyethylene film about 0.001 inch thick was placed upon a strip of non-woven cotton fabric approximately 0.07 inch in thickness.
- the composite of the film and non-woven fabric was passed through the nip between the pattern roll and smooth roll with the film toward the pattern roll, as shown in FIG. 3.
- the pressure between the two rolls was about 48 pounds per inch of roll length.
- the pad and film were passed through the nip at a speed of three yards per minute.
- Dressings of appropriate size were cut from the processed strip and tested as such on animals.
- the dressings functioned well as non-adherent wound dressings.
- fluid taken into the pad over a restricted area spread rapidly and widely to portions of the absorbent pad well removed from the area of intake on the pad.
- a droplet of colored water about A inch in diameter placed upon the body-side of the dressing produced as described above was absorbed into the pad through the openings in about two to three adjacent depressions.
- the colored water rapidly spread radially from the intake site to an area approximately one inch in diameter.
- Films suitable for use in the dressings of this invention are thermoplastic films such as polyethylene films, vinyl chloride-vinyl acetate films, vinyl chloride-vinylidene chloride films, and polyester films to name a few.
- the films must be water insoluble, thin and flexible.
- the pad may be any absorbent material suitable for use as a wound dressing.
- terials such as cotton fibers, fluff and the like.
- An absorbent dressing comprising a pad of absorb:
- said depressions having walls which slope inwardly into the body of said pad from the raised portions bordering said depressions, said film con-' forming to and lining the walls of said depressions, the portions of the film lining the walls of the depressions having a plurality of openings therein exposing absorbent material therethrough, said fil-m being adhered to absor-bent material at least at the peripheral edges of said openings.
- An absorbent dressing comprising a pad of absorbent material having a surface thereof covered with a film of thermoplastic material to provide a front surface of said dressing for application to a wound, said front surface having depressions therein whereby said surface comprises depressed portions and raised portions bordering the depressed portions, said depressions having walls which slope inwardly into the body of said pad from the raised portions bordering said depressions, said film conforming to and lining the walls of said depressions, the portions of the film lining the Walls of the depressions having a plurality of openings therein exposing absorbent material therethrough, said film being adhered to absorbent material at least at the peripheral edges of said openings, each of the film portions at the bottom of the depressions having an opening therein larger than the openings in the sloping wall portions thereof.
- An absorbent dressing in accordance with claim 1 wherein at least a predominantly major proportion of the total open area of openings in the film is provided by openings in the portions of the film lining said depressions.
Description
Dec. 20, 1966 v, E L R 3,292,619
ABSORBENT DRESSING Filed Dec. 6, 1963 v INVENTOR.
United States Patent setts Filed Dec. 6, 1963, Ser. No. 328,553 3 Claims. (Cl. 128-156) This invention relates to absorbent dressings, particularly to non-adherent wound dressings, and to a method of making same.
Undoubtedly the most meritorious advance in wound dressings in recent years is the invention in non-adherent dressings by W. B. Dockstader and L. A. Thoennes as disclosed and claimed in US. Patent 2,923,298. The growing widespread acceptance by the medical profession and the general public of these dressings testifies to the utility and effectiveness as non-adherent dressings that minimize or eliminate scar formation in a variety of types of body wounds such as cuts, skin punctures, abrasions and burns. As to be expected, the introduction of the dressings on the market was followed with a flurry of activity by others directed to non-adherent dressing structures. These included special openings such as curvilinear slits and arrangement thereof in the film covering of the dressing; embossed pads covered with a flat monoplanar perforated film; and spacers of apertured fabrics between the main body of absorbent material and the perforated film arranged with the apertures thereof in register with the perforations in the film. Examples of these modifications may be found in US. Patents 2,877,765, 2,896,618, and 3,077,882.
This invention is directed to a non-adherent dressing in which only portions of the surface on the body side thereof are in contact with the body when applied to cover a wound therein. In accordance with this invention the surface of sites of fiuid intake in the dressing is spaced from the surface of the body. Preferably, only a minor portion of the total surface area of the body-side of the dressing is in contact with the body. The body-side of a dressing is, of course, the side thereof placed toward the body over the wound. The major sites of fluid intake into the absorbent pad in accordance with this invention are located in depressions in the surface of the body-side of the dressing. The walls of the depressions slope inwardly into the body of the dressing and are lined with a thin film which covers the surface of the pad at the body-side of the dressing. The film lining the walls of the depressions is perforated, each depressed film portion containing a plurality of openings through which fluid exudate of the wound passes for absorption into the absorbent material located at the openings. The size of the openings and the number thereof in the film on the body-side of the dressing required for ready passage of wound exudate therethrough and into the absorbent material are well known and suitable sizes and numbers of openings in the dressings of this invention may be chosen in accordance therewith. Preferably, the size of each opening is such that the open area thereof is equivalent to circular openings having a diameter of from about 0.008 to 0.2 inch. The total open area of the film at least in the portion thereof directly overlying the wound site should be from about 0.25 to 25% of the film area. Moreover, in accordance with this invention a predominantly major portion, if not all, of the open area of the film is located in the film portions lining the walls of the depressions.
FIGS. 1 and 2 are top and cross-sectional, partly perspective, views, respectively, of an absorbent dressing of this invention in which the numeral 1 designates the film covering a pad 2 of absorbent material. The film 1 lines the walls 3 of the generally concave depressions 4 and extends over the raised portions 5 bordering the depressions. In the case of the dressing as shown, each of the depressions 4 is bordered on all sides thereof by continuous raised portions 5. The raised portions 5 need not be continuous, but may be intermittent; for example, channels may traverse portions 5 to interconnect the depressions. The walls 3 of the depressions 4 slope inwardly from the top surface of'the raised portions 5 into the body of the pad 2. The portion of the wall 3 furthermost recessed from the top surface of the dressing (surface of portion 5) is located substantially centrally in the depression 4. This bottom portion of the film is perforated with an opening 6 through which is exposed absorbent material of the pad 2 located directly thereunder. The film lining the sloping portions of the wall 3 is perforated with a plurality of openings 7 usually smaller in size than the bottom opening 6. The openings 7 need not be arranged in any particular pattern in the wall 3 but generally should be distributed throughout the wall surface. The number of holes 7 in each depression may vary from about 3 to 10 or more, depending upon hole size, for rapid take-up of fluid and efficient distribution of the fluid into the pad 2. The film 1 is adhered to the pad 2 at least at the peripheral edges of the openings 6 and 7. Adherence at these edges keeps the portions of the pad 2 at these openings at the plane of the openings readily available for absorbing fluid entering the depressions. Thus, the absorbent material in and at the openings helps to overcome any resistance a fluid may have in passing into the openings 6 and 7. Adherenoe at these edges between the pad and film also helps to maintain the walls 3 depressed, recessed from a plane common to the top surface of portions 5 of the film. Positive and maximum retention of the depressions is possible in accordance with this invention by lamination of the film to the pad substantially throughout the interface between the film and pad.
A one-stage process for the manufacture of dressings in which the film covering is laminated to the pad while forming the depressions in the covered surface of the'pad and also forming openings in the film portions lining the depressions is schematically illustrated in FIG. 3. Briefly, a flexible imperforate film 1 is placed upon a pad 2 of absorbent material and the composite thereof is passed through a nip between the surfaces 12 of the bosses 11 on the pattern roll 10 and the smooth surface of roll 14. The rolls 10 and 14 are urged together (by means not shown) with suflicient force to compress the portion of film 1 and underlying portion of pad 2 at the aforedescribed nip to form the depressions 4 in the film covered surface of the pad. The bosses 11 are heated, for example by an electric heater coil in the body of pattern roll 10, to a temperature sufficient to soften the depressed portions of the plastic film 1 and conform to and line the walls of the depressions simultaneously made in the pad 2. The smooth roll 14 is also heated, preferably to a temperature less than that of the pattern roll 10. When the boss 11 initially contacts the fihn and begins to depress it there is sufficient heat transfer through the film to the body of the absorbent material to prevent melting of the film. As the boss 11 travels downwardly, as viewed in FIG. 3, a point is reached at which the film at the base of the depression melts and forms an opening 6. The molten portion at the peripheral edge of the opening 6 becomes attached to the absorbent material of the pad 2 directly underlying the edge of the opening. Smaller openings are formed in the sloping wall portions of the film, such as shown at 7 in the walls 3 in FIGS. 1 and 2. These openings also are laminated to the absorbent material along their peripheral edges as in the case of the 3 larger openings 6.
The temperature of the two rolls and the temperature differential necessary to produce the dressings of this invention are dependent on a number of factors, including, of course, the softening and melting points of the thermoplastic film, the nature of the absorbent material, the pressure exerted at the nip of the two rolls and the rate at which the dressing is passed through the nip. This is illustrated in the following example.
A dressing was prepared having approximately 375 depressions per square inch of fihn-covered surface of the dressing. The apparatus employed to make the dressing was a pattern roll containing four-sided bosses approximately 0.017 inch high, the top surface (12, in the drawings) having roughly a parallelogram configuration measuring about 0.025 inch by 0.015 inch. The bosses were arranged in rows across the width of the roll, the bosses in each row being offset from the bosses in the next adjacent rows to present a staggered boss pattern. The rolls were independently heated, the pattern roll to a temperature of about 250 F. to 260 F. and the smooth roll to a temperature of about 150 F. to 175' F.
A low density polyethylene film about 0.001 inch thick was placed upon a strip of non-woven cotton fabric approximately 0.07 inch in thickness. The composite of the film and non-woven fabric was passed through the nip between the pattern roll and smooth roll with the film toward the pattern roll, as shown in FIG. 3. The pressure between the two rolls was about 48 pounds per inch of roll length. The pad and film were passed through the nip at a speed of three yards per minute.
Dressings of appropriate size were cut from the processed strip and tested as such on animals. The dressings functioned well as non-adherent wound dressings. Surprisingly, fluid taken into the pad over a restricted area spread rapidly and widely to portions of the absorbent pad well removed from the area of intake on the pad. For example, a droplet of colored water about A inch in diameter placed upon the body-side of the dressing produced as described above was absorbed into the pad through the openings in about two to three adjacent depressions. The colored water rapidly spread radially from the intake site to an area approximately one inch in diameter.
Films suitable for use in the dressings of this invention are thermoplastic films such as polyethylene films, vinyl chloride-vinyl acetate films, vinyl chloride-vinylidene chloride films, and polyester films to name a few. The films must be water insoluble, thin and flexible. The pad may be any absorbent material suitable for use as a wound dressing.
terials such as cotton fibers, fluff and the like.
The invention claimed is:
1. An absorbent dressing comprising a pad of absorb:
prises depressed portions and raised portions bordering the depressed portions, said depressions having walls which slope inwardly into the body of said pad from the raised portions bordering said depressions, said film con-' forming to and lining the walls of said depressions, the portions of the film lining the walls of the depressions having a plurality of openings therein exposing absorbent material therethrough, said fil-m being adhered to absor-bent material at least at the peripheral edges of said openings.
2. An absorbent dressing comprising a pad of absorbent material having a surface thereof covered with a film of thermoplastic material to provide a front surface of said dressing for application to a wound, said front surface having depressions therein whereby said surface comprises depressed portions and raised portions bordering the depressed portions, said depressions having walls which slope inwardly into the body of said pad from the raised portions bordering said depressions, said film conforming to and lining the walls of said depressions, the portions of the film lining the Walls of the depressions having a plurality of openings therein exposing absorbent material therethrough, said film being adhered to absorbent material at least at the peripheral edges of said openings, each of the film portions at the bottom of the depressions having an opening therein larger than the openings in the sloping wall portions thereof.
3. An absorbent dressing in accordance with claim 1 wherein at least a predominantly major proportion of the total open area of openings in the film is provided by openings in the portions of the film lining said depressions.
References Cited by the Examiner UNITED STATES PATENTS 2,633,442 3/1953 Caldwell l56-2l0 3,053,722 9/1962 Petty 156-210 3,073,304 1/1963 Schaar l28l5 6 3,085,572 4/1963 Blackford 128-156 ADELE M. EAGER, Primary Examiner.
Particularly useful are cellulosic ma- 7
Claims (1)
1. AN ABSORBENT DRESSING COMPRISING A PAD OF ABSORBENT MATERIAL HAVING A SURFACE THEREOF COVERED WITH A FILM OF THERMOPLASTIC MATERIAL TO PROVIDE A FRONT SURFACE OF SAID DRESSING FOR APPLICATION TO A WOUND, SAID FRONT SURFACE HAVING DEPRESSION THEREIN WHEREBY SAID SURFACE COMPRISES DEPRESSED PORTIONS AND RAISED PORTIONS BORDERING THE DEPRESSED PORTIONS, SAID DEPRESSIONS HAVING WALLS WHICH SLOPE INWARDLY INTO THE BODY OF SAID PAD FROM THE RAISED PORTIONS BORDERING SAID DEPRESSIONS, SAID FILM CONFORMING TO AND LINING THE WALLS OF SAID DEPRESSIONS, THE PORTIONS OF THE FILM LINING THE WALLS OF THE DEPRESSIONS HAVING A PLURALITY OF OPENINGS THEREIN EXPOSING ABSORBENT MATERIAL THERETHROUGH, SAID FILM BEING ADHERED TO ABSORBENT MATERIAL AT LEAST AT THE PERIPHERAL EDGES OF SAID OPENINGS.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US328553A US3292619A (en) | 1963-12-06 | 1963-12-06 | Absorbent dressing |
US525645A US3459618A (en) | 1963-12-06 | 1966-02-07 | Method of making absorbent dressings |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US328553A US3292619A (en) | 1963-12-06 | 1963-12-06 | Absorbent dressing |
Publications (1)
Publication Number | Publication Date |
---|---|
US3292619A true US3292619A (en) | 1966-12-20 |
Family
ID=23281450
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US328553A Expired - Lifetime US3292619A (en) | 1963-12-06 | 1963-12-06 | Absorbent dressing |
Country Status (1)
Country | Link |
---|---|
US (1) | US3292619A (en) |
Cited By (56)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3399671A (en) * | 1966-02-01 | 1968-09-03 | Kendall & Co | Spray coated absorbent dressing |
US3438371A (en) * | 1966-05-02 | 1969-04-15 | Kendall & Co | Self-adhesive dressing |
US3446208A (en) * | 1965-08-13 | 1969-05-27 | Sumitomo Chemical Co | Porous polyolefin gauze |
US3481806A (en) * | 1964-09-23 | 1969-12-02 | Huyck Corp | Method of making a bandaging and dressing material |
US3482570A (en) * | 1966-01-22 | 1969-12-09 | Wolfgang Duffner | Surgical dressing and method of producing the same |
US3509007A (en) * | 1965-03-05 | 1970-04-28 | Johnson & Johnson | Perforated sheet material |
US3539433A (en) * | 1963-10-10 | 1970-11-10 | Chrysler Corp | Fabric overlain with interstitially separated segments of thermoplastic material |
US3566883A (en) * | 1967-06-21 | 1971-03-02 | Adley H Hochstadt | Hairdressing tape |
US3814101A (en) * | 1970-09-17 | 1974-06-04 | Union Carbide Corp | Disposable absorbent articles |
DE2406525A1 (en) * | 1973-02-16 | 1974-08-22 | Procter & Gamble | Absorbent structure |
US3886941A (en) * | 1974-06-18 | 1975-06-03 | Union Carbide Corp | Diaper insert |
US3890974A (en) * | 1974-06-18 | 1975-06-24 | Union Carbide Corp | Disposable absorbent article containing slitted hydrogel film |
US3929135A (en) * | 1974-12-20 | 1975-12-30 | Procter & Gamble | Absorptive structure having tapered capillaries |
US3967623A (en) * | 1975-06-30 | 1976-07-06 | Johnson & Johnson | Disposable absorbent pad |
US4081580A (en) * | 1973-11-13 | 1978-03-28 | Eiji Kato | Paper wrapper for wrapping refrigerated meat |
US4121960A (en) * | 1975-06-04 | 1978-10-24 | Scott Paper Company | Perforated, embossed film to foam laminates |
EP0018684A1 (en) * | 1979-05-04 | 1980-11-12 | THE PROCTER & GAMBLE COMPANY | Disposable absorbent structure having a textured macroscopically perforated thermoplastic film topsheet |
US4280978A (en) * | 1979-05-23 | 1981-07-28 | Monsanto Company | Process of embossing and perforating thermoplastic film |
US4591523A (en) * | 1985-05-31 | 1986-05-27 | The Procter & Gamble Company | Apertured macroscopically expanded three-dimensional polymeric web exhibiting breatheability and resistance to fluid transmission |
US4637819A (en) * | 1985-05-31 | 1987-01-20 | The Procter & Gamble Company | Macroscopically expanded three-dimensional polymeric web for transmitting both dynamically deposited and statically contacted fluids from one surface to the other |
DK151452B (en) * | 1975-02-24 | 1987-12-07 | Colgate Palmolive Co | Absorbent object |
US4726976A (en) * | 1986-10-28 | 1988-02-23 | The Kendall Company | Composite substrate |
EP0275353A2 (en) * | 1987-01-20 | 1988-07-27 | The B.F. Goodrich Company | Perforated elastomeric soft film and wound dressing made therewith |
US4798604A (en) * | 1985-08-24 | 1989-01-17 | Smith And Nephew Associated Companies P.L.C. | Contoured film |
DE3723596A1 (en) * | 1987-07-16 | 1989-01-26 | Squibb & Sons Inc | Medical plaster |
US4839216A (en) * | 1984-02-16 | 1989-06-13 | The Procter & Gamble Company | Formed material produced by solid-state formation with a high-pressure liquid stream |
EP0360929A1 (en) * | 1988-09-02 | 1990-04-04 | VERATEC, INC. (a Delaware corp.) | Fibre-film substrate |
US5171238A (en) * | 1989-03-16 | 1992-12-15 | The Transzonic Companies | Absorbent pad with fibrous facing sheet |
US5268213A (en) * | 1992-01-20 | 1993-12-07 | Uni-Charm Corporation | Liquid-permeable topsheet for body fluid absorbent articles |
EP0598970A1 (en) * | 1992-11-17 | 1994-06-01 | PANTEX S.r.l. | Method and apparatus for manufacturing a product in membrane or film for covering sanitary towels or nappies or for filtering systems, and such like |
US5328450A (en) * | 1989-03-16 | 1994-07-12 | Smith & Nephew Plc | Absorbent devices and precursors therefor |
US5370764A (en) * | 1992-11-06 | 1994-12-06 | Kimberly-Clark Corporation | Apparatus for making film laminated material |
US5449340A (en) * | 1990-02-07 | 1995-09-12 | Tollini; Dennis R. | Bandage for replaceable dressing |
US5480719A (en) * | 1992-11-25 | 1996-01-02 | Tollini; Dennis R. | Securing tape |
US5591149A (en) * | 1992-10-07 | 1997-01-07 | The Procter & Gamble Company | Absorbent article having meltblown components |
US5667625A (en) * | 1992-11-06 | 1997-09-16 | Kimberly-Clark Worldwide, Inc. | Apparatus for forming a fibrous laminated material |
US5681300A (en) * | 1991-12-17 | 1997-10-28 | The Procter & Gamble Company | Absorbent article having blended absorbent core |
US5814390A (en) * | 1995-06-30 | 1998-09-29 | Kimberly-Clark Worldwide, Inc. | Creased nonwoven web with stretch and recovery |
US5817394A (en) * | 1993-11-08 | 1998-10-06 | Kimberly-Clark Corporation | Fibrous laminated web and method and apparatus for making the same and absorbent articles incorporating the same |
USD403764S (en) * | 1996-12-20 | 1999-01-05 | The Procter & Gamble Company | Surface pattern for disposable absorbent article |
USD403763S (en) * | 1996-12-20 | 1999-01-05 | The Procter & Gamble Company | Surface pattern for disposable absorbent article |
USD403765S (en) * | 1996-12-20 | 1999-01-05 | The Procter & Gamble Company | Surface pattern for disposable absorbent article |
US6004893A (en) * | 1983-07-05 | 1999-12-21 | The Procter & Gamble Company | Shaped sanitary napkin with flaps |
US6103953A (en) * | 1991-12-17 | 2000-08-15 | The Procter & Gamble Company | Absorbent article having fused layers |
US6319239B1 (en) | 1996-12-20 | 2001-11-20 | The Procter & Gamble Company | Absorbent article having improved integrity and acquisition |
US6603052B2 (en) | 2001-05-25 | 2003-08-05 | John E. Davis | Fluid absorbent article for surgical use |
US20040127835A1 (en) * | 2002-12-31 | 2004-07-01 | Sigurjonsson Gudmundur Fertram | Method for producing a wound dressing |
US20050059918A1 (en) * | 2003-09-17 | 2005-03-17 | Sigurjonsson Gudmundur Fertram | Wound dressing and method for manufacturing the same |
US20050147797A1 (en) * | 2002-04-12 | 2005-07-07 | Guglielmo Biagiotti | Device and method for joining layers for forming sheet products and resulting products |
US7102054B1 (en) | 1991-12-17 | 2006-09-05 | The Procter & Gamble Company | Absorbent article having fused layers |
US20070023135A1 (en) * | 2003-04-02 | 2007-02-01 | Claudio Giacometti | Method and device to produce a perforated web material |
US20070066925A1 (en) * | 2005-01-28 | 2007-03-22 | Gudnason Palmar I | Wound dressing and method for manufacturing the same |
US20070202220A1 (en) * | 2006-02-28 | 2007-08-30 | Dicosola Susan T | Food storage preserver |
US7531711B2 (en) | 2003-09-17 | 2009-05-12 | Ossur Hf | Wound dressing and method for manufacturing the same |
USD852368S1 (en) | 2017-03-27 | 2019-06-25 | Avery Dennison Corporation | Catheter dressing |
US11160917B2 (en) * | 2020-01-22 | 2021-11-02 | J&M Shuler Medical Inc. | Negative pressure wound therapy barrier |
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Cited By (79)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3539433A (en) * | 1963-10-10 | 1970-11-10 | Chrysler Corp | Fabric overlain with interstitially separated segments of thermoplastic material |
US3481806A (en) * | 1964-09-23 | 1969-12-02 | Huyck Corp | Method of making a bandaging and dressing material |
US3509007A (en) * | 1965-03-05 | 1970-04-28 | Johnson & Johnson | Perforated sheet material |
US3446208A (en) * | 1965-08-13 | 1969-05-27 | Sumitomo Chemical Co | Porous polyolefin gauze |
US3482570A (en) * | 1966-01-22 | 1969-12-09 | Wolfgang Duffner | Surgical dressing and method of producing the same |
US3399671A (en) * | 1966-02-01 | 1968-09-03 | Kendall & Co | Spray coated absorbent dressing |
US3438371A (en) * | 1966-05-02 | 1969-04-15 | Kendall & Co | Self-adhesive dressing |
US3566883A (en) * | 1967-06-21 | 1971-03-02 | Adley H Hochstadt | Hairdressing tape |
US3814101A (en) * | 1970-09-17 | 1974-06-04 | Union Carbide Corp | Disposable absorbent articles |
DE2406525A1 (en) * | 1973-02-16 | 1974-08-22 | Procter & Gamble | Absorbent structure |
US3989867A (en) * | 1973-02-16 | 1976-11-02 | The Procter & Gamble Company | Absorptive devices having porous backsheet |
US4081580A (en) * | 1973-11-13 | 1978-03-28 | Eiji Kato | Paper wrapper for wrapping refrigerated meat |
US3886941A (en) * | 1974-06-18 | 1975-06-03 | Union Carbide Corp | Diaper insert |
US3890974A (en) * | 1974-06-18 | 1975-06-24 | Union Carbide Corp | Disposable absorbent article containing slitted hydrogel film |
US3929135A (en) * | 1974-12-20 | 1975-12-30 | Procter & Gamble | Absorptive structure having tapered capillaries |
DK151452B (en) * | 1975-02-24 | 1987-12-07 | Colgate Palmolive Co | Absorbent object |
US4121960A (en) * | 1975-06-04 | 1978-10-24 | Scott Paper Company | Perforated, embossed film to foam laminates |
US3967623A (en) * | 1975-06-30 | 1976-07-06 | Johnson & Johnson | Disposable absorbent pad |
EP0018684A1 (en) * | 1979-05-04 | 1980-11-12 | THE PROCTER & GAMBLE COMPANY | Disposable absorbent structure having a textured macroscopically perforated thermoplastic film topsheet |
US4280978A (en) * | 1979-05-23 | 1981-07-28 | Monsanto Company | Process of embossing and perforating thermoplastic film |
US6004893A (en) * | 1983-07-05 | 1999-12-21 | The Procter & Gamble Company | Shaped sanitary napkin with flaps |
US4839216A (en) * | 1984-02-16 | 1989-06-13 | The Procter & Gamble Company | Formed material produced by solid-state formation with a high-pressure liquid stream |
US4591523A (en) * | 1985-05-31 | 1986-05-27 | The Procter & Gamble Company | Apertured macroscopically expanded three-dimensional polymeric web exhibiting breatheability and resistance to fluid transmission |
US4637819A (en) * | 1985-05-31 | 1987-01-20 | The Procter & Gamble Company | Macroscopically expanded three-dimensional polymeric web for transmitting both dynamically deposited and statically contacted fluids from one surface to the other |
US4798604A (en) * | 1985-08-24 | 1989-01-17 | Smith And Nephew Associated Companies P.L.C. | Contoured film |
US4726976A (en) * | 1986-10-28 | 1988-02-23 | The Kendall Company | Composite substrate |
EP0275353A2 (en) * | 1987-01-20 | 1988-07-27 | The B.F. Goodrich Company | Perforated elastomeric soft film and wound dressing made therewith |
EP0275353A3 (en) * | 1987-01-20 | 1989-05-10 | The B.F. Goodrich Company | Perforated elastomeric soft film and wound dressing made therewith |
DE3723596A1 (en) * | 1987-07-16 | 1989-01-26 | Squibb & Sons Inc | Medical plaster |
EP0360929A1 (en) * | 1988-09-02 | 1990-04-04 | VERATEC, INC. (a Delaware corp.) | Fibre-film substrate |
US5328450A (en) * | 1989-03-16 | 1994-07-12 | Smith & Nephew Plc | Absorbent devices and precursors therefor |
US5171238A (en) * | 1989-03-16 | 1992-12-15 | The Transzonic Companies | Absorbent pad with fibrous facing sheet |
US5449340A (en) * | 1990-02-07 | 1995-09-12 | Tollini; Dennis R. | Bandage for replaceable dressing |
US7102054B1 (en) | 1991-12-17 | 2006-09-05 | The Procter & Gamble Company | Absorbent article having fused layers |
US6103953A (en) * | 1991-12-17 | 2000-08-15 | The Procter & Gamble Company | Absorbent article having fused layers |
US5681300A (en) * | 1991-12-17 | 1997-10-28 | The Procter & Gamble Company | Absorbent article having blended absorbent core |
US5268213A (en) * | 1992-01-20 | 1993-12-07 | Uni-Charm Corporation | Liquid-permeable topsheet for body fluid absorbent articles |
US5591149A (en) * | 1992-10-07 | 1997-01-07 | The Procter & Gamble Company | Absorbent article having meltblown components |
US5667625A (en) * | 1992-11-06 | 1997-09-16 | Kimberly-Clark Worldwide, Inc. | Apparatus for forming a fibrous laminated material |
US5580418A (en) * | 1992-11-06 | 1996-12-03 | Kimberly-Clark Corporation | Apparatus for making film laminated material |
US5667619A (en) * | 1992-11-06 | 1997-09-16 | Kimberly-Clark Worldwide, Inc. | Method for making a fibrous laminated web |
US5370764A (en) * | 1992-11-06 | 1994-12-06 | Kimberly-Clark Corporation | Apparatus for making film laminated material |
US5709829A (en) * | 1992-11-17 | 1998-01-20 | Pantex S.R.L. | Method for manufacturing product in membrane or film form |
EP0598970A1 (en) * | 1992-11-17 | 1994-06-01 | PANTEX S.r.l. | Method and apparatus for manufacturing a product in membrane or film for covering sanitary towels or nappies or for filtering systems, and such like |
US5814389A (en) * | 1992-11-17 | 1998-09-29 | Pantex, S.R.L. | Apertured three-dimensional product in membrane or film form for covering sanitary, disposable absorbent products |
US5480719A (en) * | 1992-11-25 | 1996-01-02 | Tollini; Dennis R. | Securing tape |
US5817394A (en) * | 1993-11-08 | 1998-10-06 | Kimberly-Clark Corporation | Fibrous laminated web and method and apparatus for making the same and absorbent articles incorporating the same |
US5814390A (en) * | 1995-06-30 | 1998-09-29 | Kimberly-Clark Worldwide, Inc. | Creased nonwoven web with stretch and recovery |
USD403765S (en) * | 1996-12-20 | 1999-01-05 | The Procter & Gamble Company | Surface pattern for disposable absorbent article |
USD403763S (en) * | 1996-12-20 | 1999-01-05 | The Procter & Gamble Company | Surface pattern for disposable absorbent article |
US6319239B1 (en) | 1996-12-20 | 2001-11-20 | The Procter & Gamble Company | Absorbent article having improved integrity and acquisition |
USD403764S (en) * | 1996-12-20 | 1999-01-05 | The Procter & Gamble Company | Surface pattern for disposable absorbent article |
US6603052B2 (en) | 2001-05-25 | 2003-08-05 | John E. Davis | Fluid absorbent article for surgical use |
US20050147797A1 (en) * | 2002-04-12 | 2005-07-07 | Guglielmo Biagiotti | Device and method for joining layers for forming sheet products and resulting products |
US7488864B2 (en) | 2002-12-31 | 2009-02-10 | Ossur Hf | Wound dressing |
US7468471B2 (en) | 2002-12-31 | 2008-12-23 | Ossur, Hf | Wound dressing having a facing surface with variable tackiness |
US20040127829A1 (en) * | 2002-12-31 | 2004-07-01 | Sigurjonsson Gudmundur Fertram | Wound dressing |
US8247635B2 (en) | 2002-12-31 | 2012-08-21 | Ossur Hf | Wound dressing |
US7910793B2 (en) | 2002-12-31 | 2011-03-22 | Ossur Hf | Wound dressing |
US7696400B2 (en) | 2002-12-31 | 2010-04-13 | Ossur Hf | Wound dressing |
US20040127835A1 (en) * | 2002-12-31 | 2004-07-01 | Sigurjonsson Gudmundur Fertram | Method for producing a wound dressing |
US7304202B2 (en) | 2002-12-31 | 2007-12-04 | Ossur Hf | Wound dressing |
US7470830B2 (en) | 2002-12-31 | 2008-12-30 | Ossur, Hf | Method for producing a wound dressing |
US7459598B2 (en) | 2002-12-31 | 2008-12-02 | Ossur, Hf | Wound dressing |
US7411109B2 (en) | 2002-12-31 | 2008-08-12 | Ossur Hf | Method for producing a wound dressing |
US7423193B2 (en) | 2002-12-31 | 2008-09-09 | Ossur, Hf | Wound dressing |
US20070023135A1 (en) * | 2003-04-02 | 2007-02-01 | Claudio Giacometti | Method and device to produce a perforated web material |
US7745682B2 (en) | 2003-09-17 | 2010-06-29 | Ossur Hf | Wound dressing and method for manufacturing the same |
US7531711B2 (en) | 2003-09-17 | 2009-05-12 | Ossur Hf | Wound dressing and method for manufacturing the same |
US7396975B2 (en) | 2003-09-17 | 2008-07-08 | Ossur Hf | Wound dressing and method for manufacturing the same |
US8093445B2 (en) | 2003-09-17 | 2012-01-10 | Ossur Hf | Wound dressing and method for manufacturing the same |
US20050059918A1 (en) * | 2003-09-17 | 2005-03-17 | Sigurjonsson Gudmundur Fertram | Wound dressing and method for manufacturing the same |
US7381860B2 (en) * | 2005-01-28 | 2008-06-03 | Hf Ossur | Wound dressing and method for manufacturing the same |
US20070255194A1 (en) * | 2005-01-28 | 2007-11-01 | Gudnason Palmar I | Wound dressing and method for manufacturing the same |
US20070066925A1 (en) * | 2005-01-28 | 2007-03-22 | Gudnason Palmar I | Wound dressing and method for manufacturing the same |
US20070202220A1 (en) * | 2006-02-28 | 2007-08-30 | Dicosola Susan T | Food storage preserver |
USD852368S1 (en) | 2017-03-27 | 2019-06-25 | Avery Dennison Corporation | Catheter dressing |
US11160917B2 (en) * | 2020-01-22 | 2021-11-02 | J&M Shuler Medical Inc. | Negative pressure wound therapy barrier |
US11766514B2 (en) | 2020-01-22 | 2023-09-26 | J&M Shuler Medical Inc. | Negative pressure wound therapy barrier |
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