US3062209A - Bandaging material for the treatment of wounds - Google Patents
Bandaging material for the treatment of wounds Download PDFInfo
- Publication number
- US3062209A US3062209A US730338A US73033858A US3062209A US 3062209 A US3062209 A US 3062209A US 730338 A US730338 A US 730338A US 73033858 A US73033858 A US 73033858A US 3062209 A US3062209 A US 3062209A
- Authority
- US
- United States
- Prior art keywords
- wound
- layer
- layers
- absorbent
- polyamide
- 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
- 206010052428 Wound Diseases 0.000 title description 34
- 208000027418 Wounds and injury Diseases 0.000 title description 34
- 239000000463 material Substances 0.000 title description 15
- 238000001266 bandaging Methods 0.000 title description 7
- 238000011282 treatment Methods 0.000 title description 4
- 239000004952 Polyamide Substances 0.000 description 26
- 229920002647 polyamide Polymers 0.000 description 26
- 239000002250 absorbent Substances 0.000 description 21
- 230000002745 absorbent Effects 0.000 description 20
- 239000000835 fiber Substances 0.000 description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 239000004753 textile Substances 0.000 description 3
- 238000009941 weaving Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000004049 embossing Methods 0.000 description 2
- 210000000416 exudates and transudate Anatomy 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 150000004985 diamines Chemical class 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 206010040872 skin infection Diseases 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
Images
Classifications
-
- A61F13/01029—
-
- 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
- A61F2013/00153—Wound bandages coloured or with decoration pattern or printing
-
- 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
- A61F2013/00217—Wound bandages not adhering to the wound
-
- 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
-
- 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
- A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
- A61F13/51401—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material
- A61F2013/51409—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material being a film
-
- 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
- A61F13/53—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 absorbing medium
- A61F13/539—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 absorbing medium characterised by the connection of the absorbent layers with each other or with the outer layers
- A61F2013/5395—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 absorbing medium characterised by the connection of the absorbent layers with each other or with the outer layers with thermoplastic agent, i.e. softened by heat
Definitions
- the wound dressing consists of a substantially closed foil adapted to allow steam to permeate therethrough, it is rather difficult to control the degree of the permeability for the wound exudate and it is also difficult to adapt the dressing to special wound treatments. Furthermore, the material does not readily indicate the permeability thereof.
- the wound covering for such bandaging material or dressing is so designed that the covering facing the Wound consists of a form retaining solidified flexible layer of polyamides.
- the form stability of the polyamide layer brings about a plane, wrinkle-free Wound covering which is sufliciently flexible and assures a sufficient connection between the Wound covering and the absorbent layers.
- the wound covering consists of monofile polyamides combined to a textile or a texture, in which the thickness of the fibers or the threads of the monofile material and the type of weaving of the fabric are selected in conformity with the desired permeability.
- the polyamide fabric or texture is made shrink-proof by a heat treatment.
- the polyamide covering facing the wound is connected to the intermediate layers in a form retaining manner.
- one or more further polyamide layers may be provided between the absorbent layers.
- the polyarnide layers are preferably secured to each other through an intermediate layer of absorbent material by fusing or glueing.
- the polyamide layer may also be produced by spraying, rolling or otherwise transferring liquid polyamides to an absorbent backing.
- a plurality of correspondingly imprinted layers may be superimposed upon each other.
- the polyarnide layer facing the Wound may also be produced by combining polyamide fibers to a porous layer, however, in such a way that that side which is remote from the wound has a backing of absorbent material.
- absorbent material layers of cellulose, cotton, or the like may be selected, however, also layers of nonswelling synthetic fibers may be used which are absorbent by the capillary spaces only which exist between the loose ly superimposed fiber layers.
- Particularly suitable as absorbent material are layers of a fiber fleece which is made without spinning or weaving from natural or synthetic cellulose fibers which are loosened in their structure and subsequently in half loosened condition are solidified under pressure. Such solidified fleeces may be used in any desired number of layers without additional adhesives.
- Polyamides for the production of monofile textiles or textures or similarly usable structure of individual fibers comprise synthetic materials obtained by the condensation of diamines with dicarbonic acids which for producing a porous layer are dissolved in solvents such as formic acid and acetic acid. Also combined condensates of correspondin chemical structure may be used for the above purpose.
- FIG. 1 diagrammatically shows a section through a polyamide layer with a backing formed by an absorbent layer.
- FIG. 2 diagrammatically illustrates in section a multilayer bandaging material.
- FIG. 3 is a top view upon the wound facing surface of a wound dressing.
- the polyamide layer is designated with the reference numeral 10, while the absorbent layer is designated with the reference numeral 11.
- the polyamide layer 10 facing the wound is followed by an absorbent layer 11 which in its turn is followed by a polyamide layer 12 covered by an absorbent layer 13.
- the dot-dash lines indicate that, besides textiles and textures, especially monofile layers of polyamides may be employed and also polyamide layers which are produced for instance by spraying which layers are connected through the absorbent layer 11 at 14 for instance by fusing.
- the absorbent layers 11, 13 may also consist of polyamide fibers.
- the surface of the polyamide layer may be provided with imprints or embossings 15 of any desired design. These imprints may be employed for solidifying the polyamide layer facing the wound.
- the local imprints 15 may correspond to the connecting bridges 14 in conformity with FIG. 2.
- the polyamide layer consisting of solidified and interconnected threads or fibers is made shrink-proof by a heat treatment.
- the treating agents desired for the weaving of the threads for instance agents preventing undesired electrostatic charges, may be eliminated by a boiling process which makes the polyamide texture shrink-proof.
- a dry heat treatment for shrinkproofin may be employed.
- the wound covering according to the present invention will retain its shape and will remain wrinkle-free on the wound for any relatively long time.
- the wound covering according to the invention therefore, makes possible a handling thereof in completely spread condition.
- the polyamide layer is shrink-proof so that a complete tranquilization of the wound will be obtained by the wound covering.
- the body portion adjacent the wound will not be affected by local different movements of the wound covering.
- the polyamide layer will exclude the occurrence of sebaceous skin infections.
- a bandaging material for the treatment of wounds which includes a cover layer for covering the wound and a layer of absorbent material, said cover layer being flexible and comprising a polyamide fiber material in a solidified form retaining condition, said absorbent layer also including at least one intermediate layer of polyamide References Cited in the file of this patent UNITED STATES PATENTS 5 Dreyfus Aug. 16, 1932 Eustis Jan. 21, 1941 Le Lous Sept. 6, 1949 4 FOREIGN PATENTS Great Britain Nov. 28, 1935 Great Britain Dec. 7, 1953 Great Britain June 5, 1957 Australia Nov. 25, 1955 Australia Nov. 16, 1955 Great Britain Mar. 23, 1958
Description
Nov. 6, 1962 H. 'STOWASSER 3, 5
BANDAGING MATERIAL FOR THE TREATMENT OF WOUNDS Filed April 23, 1 58 Ina anion 160v .B'f'o was 5 gr Patented Nov. 6, 1962 3 062 209 BANDAGING MArnRiALroR THE TREATIVENT F WGUNDS Heribert Stowasser, Neuwied (Rhine), Germany, assignor to Lohrnann K.G., Fahr (Rhine), Germany Filed Apr. 23, 1953, Ser. No. 730,338 Claims priority, application Germany Apr. 23, 1957 1 Claim. (Cl. 128-156) Non-absorbent wound dressing material which is provided with a backing of absorbent layers has to engage the wound surface very closely. In this connection, however, it frequently occurs that the absorbent layers, when moist, tend to separate from the wound dressing because, due to the access of humidity, the original structure of layers changes more or less. The handling of the wound dressing, especially its removal, therefore presents difiiculties.
If the wound dressing consists of a substantially closed foil adapted to allow steam to permeate therethrough, it is rather difficult to control the degree of the permeability for the wound exudate and it is also difficult to adapt the dressing to special wound treatments. Furthermore, the material does not readily indicate the permeability thereof.
In contrast thereto, according to the present invention, the wound covering for such bandaging material or dressing is so designed that the covering facing the Wound consists of a form retaining solidified flexible layer of polyamides.
The form stability of the polyamide layer brings about a plane, wrinkle-free Wound covering which is sufliciently flexible and assures a sufficient connection between the Wound covering and the absorbent layers.
Preferably, the wound covering consists of monofile polyamides combined to a textile or a texture, in which the thickness of the fibers or the threads of the monofile material and the type of weaving of the fabric are selected in conformity with the desired permeability.
Therefore, being connected to the absorbent material, the polyamide fabric or texture is made shrink-proof by a heat treatment.
The polyamide covering facing the wound is connected to the intermediate layers in a form retaining manner. To this end, one or more further polyamide layers may be provided between the absorbent layers. In this instance, the polyarnide layers are preferably secured to each other through an intermediate layer of absorbent material by fusing or glueing.
The polyamide layer may also be produced by spraying, rolling or otherwise transferring liquid polyamides to an absorbent backing. In connection therewith, it is also possible to provide the surface with an imprint or embossing which will be retained in its form in the polyamide layer. If desired, also a plurality of correspondingly imprinted layers may be superimposed upon each other.
The polyarnide layer facing the Wound may also be produced by combining polyamide fibers to a porous layer, however, in such a way that that side which is remote from the wound has a backing of absorbent material.
As absorbent material, layers of cellulose, cotton, or the like may be selected, however, also layers of nonswelling synthetic fibers may be used which are absorbent by the capillary spaces only which exist between the loose ly superimposed fiber layers. Particularly suitable as absorbent material are layers of a fiber fleece which is made without spinning or weaving from natural or synthetic cellulose fibers which are loosened in their structure and subsequently in half loosened condition are solidified under pressure. Such solidified fleeces may be used in any desired number of layers without additional adhesives.
Polyamides for the production of monofile textiles or textures or similarly usable structure of individual fibers comprise synthetic materials obtained by the condensation of diamines with dicarbonic acids which for producing a porous layer are dissolved in solvents such as formic acid and acetic acid. Also combined condensates of correspondin chemical structure may be used for the above purpose.
The invention is illustrated in the accompanying drawings, in which:
FIG. 1 diagrammatically shows a section through a polyamide layer with a backing formed by an absorbent layer.
FIG. 2 diagrammatically illustrates in section a multilayer bandaging material.
FIG. 3 is a top view upon the wound facing surface of a wound dressing.
In each of FIGS. 1, 2 and 3, the polyamide layer is designated with the reference numeral 10, while the absorbent layer is designated with the reference numeral 11. According to FIG. 2, the polyamide layer 10 facing the wound is followed by an absorbent layer 11 which in its turn is followed by a polyamide layer 12 covered by an absorbent layer 13. The dot-dash lines indicate that, besides textiles and textures, especially monofile layers of polyamides may be employed and also polyamide layers which are produced for instance by spraying which layers are connected through the absorbent layer 11 at 14 for instance by fusing. The absorbent layers 11, 13 may also consist of polyamide fibers.
The surface of the polyamide layer may be provided with imprints or embossings 15 of any desired design. These imprints may be employed for solidifying the polyamide layer facing the wound. The local imprints 15 may correspond to the connecting bridges 14 in conformity with FIG. 2.
The polyamide layer consisting of solidified and interconnected threads or fibers is made shrink-proof by a heat treatment. In this way, the treating agents desired for the weaving of the threads, for instance agents preventing undesired electrostatic charges, may be eliminated by a boiling process which makes the polyamide texture shrink-proof. Also a dry heat treatment for shrinkproofin may be employed.
The wound covering according to the present invention will retain its shape and will remain wrinkle-free on the wound for any relatively long time. The wound covering according to the invention, therefore, makes possible a handling thereof in completely spread condition. The polyamide layer is shrink-proof so that a complete tranquilization of the wound will be obtained by the wound covering. The body portion adjacent the wound will not be affected by local different movements of the wound covering.
Smaller or larger portions of the wound covering will equally well retain their shape. Also with larger wound surfaces, the wound covering will remain completely flat. The wound exudate will be continuously conveyed to the absorbent layer through the permeable surface.
Surprisingly, it has been found that the polyamide layer will exclude the occurrence of sebaceous skin infections.
It will be understood that the illustrated embodiments are to be regarded as schematic examples only for the structure of the bandaging material according to the present invention. The shape, size, and thickness of the layers may be varied in conformity with the requirements.
What I claim is:
A bandaging material for the treatment of wounds, which includes a cover layer for covering the wound and a layer of absorbent material, said cover layer being flexible and comprising a polyamide fiber material in a solidified form retaining condition, said absorbent layer also including at least one intermediate layer of polyamide References Cited in the file of this patent UNITED STATES PATENTS 5 Dreyfus Aug. 16, 1932 Eustis Jan. 21, 1941 Le Lous Sept. 6, 1949 4 FOREIGN PATENTS Great Britain Nov. 28, 1935 Great Britain Dec. 7, 1953 Great Britain June 5, 1957 Australia Nov. 25, 1955 Australia Nov. 16, 1955 Great Britain Mar. 23, 1958
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3062209X | 1957-04-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3062209A true US3062209A (en) | 1962-11-06 |
Family
ID=8085599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US730338A Expired - Lifetime US3062209A (en) | 1957-04-23 | 1958-04-23 | Bandaging material for the treatment of wounds |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US3062209A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0031018B1 (en) * | 1979-11-17 | 1984-02-22 | Hoechst Aktiengesellschaft | Covering device for the treatment of the skin on the basis of gelatinous polymers |
| US20050182347A1 (en) * | 2004-02-13 | 2005-08-18 | Bishop Stephen M. | Multi layered wound dressing |
| US20070166233A1 (en) * | 2006-01-17 | 2007-07-19 | Royds Robert B | Abuse resistant transdermal drug delivery |
| US20090177135A1 (en) * | 2007-06-06 | 2009-07-09 | Bristol-Myers Squibb Company | Wound dressing |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1872076A (en) * | 1928-03-08 | 1932-08-16 | Dreyfus Camille | Surgical dressing |
| GB439085A (en) * | 1935-02-06 | 1935-11-28 | Ernst Gelinsky | Improvements in or relating to dressings for wounds and the like |
| US2229061A (en) * | 1935-07-01 | 1941-01-21 | Eustis Warner | Fibrous absorbent body and method of making same |
| US2481316A (en) * | 1945-04-18 | 1949-09-06 | Lous Jean Francois Le | Surgical dressing element |
| GB744572A (en) * | 1953-12-07 | 1956-02-08 | Ernst Gelinsky | Improvements in surgical dressings |
| GB776408A (en) * | 1954-05-26 | 1957-06-05 | Hellmut Laun | Improvements in or relating to bandaging material |
| GB791749A (en) * | 1956-06-28 | 1958-03-12 | Kimberly Clark Co | Improvements in and relating to catamenial appliances and the like |
-
1958
- 1958-04-23 US US730338A patent/US3062209A/en not_active Expired - Lifetime
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1872076A (en) * | 1928-03-08 | 1932-08-16 | Dreyfus Camille | Surgical dressing |
| GB439085A (en) * | 1935-02-06 | 1935-11-28 | Ernst Gelinsky | Improvements in or relating to dressings for wounds and the like |
| US2229061A (en) * | 1935-07-01 | 1941-01-21 | Eustis Warner | Fibrous absorbent body and method of making same |
| US2481316A (en) * | 1945-04-18 | 1949-09-06 | Lous Jean Francois Le | Surgical dressing element |
| GB744572A (en) * | 1953-12-07 | 1956-02-08 | Ernst Gelinsky | Improvements in surgical dressings |
| GB776408A (en) * | 1954-05-26 | 1957-06-05 | Hellmut Laun | Improvements in or relating to bandaging material |
| GB791749A (en) * | 1956-06-28 | 1958-03-12 | Kimberly Clark Co | Improvements in and relating to catamenial appliances and the like |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0031018B1 (en) * | 1979-11-17 | 1984-02-22 | Hoechst Aktiengesellschaft | Covering device for the treatment of the skin on the basis of gelatinous polymers |
| US20050182347A1 (en) * | 2004-02-13 | 2005-08-18 | Bishop Stephen M. | Multi layered wound dressing |
| US7759537B2 (en) * | 2004-02-13 | 2010-07-20 | Convatec Technologies Inc. | Multi layered wound dressing |
| US20070166233A1 (en) * | 2006-01-17 | 2007-07-19 | Royds Robert B | Abuse resistant transdermal drug delivery |
| US7740879B2 (en) * | 2006-01-17 | 2010-06-22 | Harrogate Holdings | Abuse resistant transdermal drug delivery patch |
| US20090177135A1 (en) * | 2007-06-06 | 2009-07-09 | Bristol-Myers Squibb Company | Wound dressing |
| US8404921B2 (en) * | 2007-06-06 | 2013-03-26 | Convatec Technologies, Inc. | Wound dressing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4565736A (en) | Fibrous surgical compress with cover layer autogenously bonded to absorption layer | |
| US3047444A (en) | Non-woven fabric and method of making the same | |
| US4099342A (en) | Footwear | |
| US2939461A (en) | Sanitary napkins with external padding | |
| GB1130857A (en) | Bandaging and dressing material and method of making same | |
| US3615976A (en) | Method of producing a high bulk macrocrepe product | |
| CN103938368A (en) | Spunlaced non-woven material with one-way water guide function and preparing method and application thereof | |
| GB1279210A (en) | Non-woven fibrous material | |
| GB567043A (en) | Improvements in the treatment of fibrous materials with linear super polyamides | |
| US3062209A (en) | Bandaging material for the treatment of wounds | |
| US3006338A (en) | Non-adherent surgical dressing | |
| GB851410A (en) | Fabrics composed of locally bonded fibrous webs | |
| US3043733A (en) | Method of manufacturing an insulating interlining fabric | |
| US2905568A (en) | Method and apparatus for manufacturing an absorbent product | |
| CN107723923A (en) | A kind of health composite absorbent material and preparation method | |
| US3437539A (en) | Method of making a non-woven fabric by splitting | |
| DE20120392U1 (en) | Flexible sheets, especially for the production of protective clothing | |
| US3790433A (en) | Multilaminar sheet structure | |
| US3132984A (en) | Process of making a surgical dressing | |
| CN107858853B (en) | A kind of water suction felt and preparation method thereof | |
| US1989885A (en) | Specialty paper | |
| US1755744A (en) | Goffered article | |
| KR102239521B1 (en) | Manufacturing method of mask pack sheet using composite elastic non-woven fabric | |
| US2195591A (en) | Textile fabric consisting of a plurality of interwoven layers | |
| DE2161235A1 (en) | Absorbent tissue - made of cellulose wadding with permeable films and perforations through projections |