Three-layer laminated panel

• US 5,151,314 A
• Filed: 01/31/1991
• Issued: 09/29/1992
• Est. Priority Date: 01/31/1991
• Status: Expired due to Term

• Current Assignee: Johnson & Johnson Medical Incorporated (Johnson & Johnson)
• Original Assignee: Johnson & Johnson Medical Incorporated (Johnson & Johnson)
• Inventors: Brown, Craig C.
• Primary Examiner(s): Bell, James J.
• Application Number:
  US07/648,715
• Time in Patent Office: 607 Days
• Field of Search: 428/198, 428/284, 428/286, 428/170, 428/171, 428/172, 428/913, 428/131, 428/137, 428/138, 428/247, 128/849
• US Class Current: 428/198
• CPC Class Codes: A61B 46/40 Drape material, e.g. laminates; Manufacture thereof
• CPC Class Codes: A61F 13/01042 Absorbency
• CPC Class Codes: A61F 2013/00242 to avoiding fraying or pilling lint-free, i.e. non-linting or frying A61F2013/00348
• CPC Class Codes: A61F 2013/00536 for draining or irrigating wounds
• CPC Class Codes: A61F 2013/00604 Multilayer
• CPC Class Codes: A61F 2013/00744 containing non-woven
• CPC Class Codes: A61F 2013/00774 arranged in discrete dots
• CPC Class Codes: A61F 2013/0091 with disinfecting or anaesthetics means, e.g. anti-mycrobic
• CPC Class Codes: A61F 2013/15073 as drapes
• CPC Class Codes: B32B 2305/08 Reinforcements
• CPC Class Codes: B32B 2307/7265 Non-permeable
• CPC Class Codes: B32B 2310/14 Corona, ionisation, electrical discharge, plasma treatment
• CPC Class Codes: B32B 2323/04 Polyethylene
• CPC Class Codes: B32B 2535/00 Medical equipment, e.g. bandage, prostheses, catheter medical patches B32B2556/00
• CPC Class Codes: B32B 27/12 next to a fibrous or filamentary layer
• CPC Class Codes: B32B 27/16 specially treated, e.g. irradiated
• CPC Class Codes: B32B 27/32 comprising polyolefins comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30
• CPC Class Codes: B32B 38/0008 Electrical discharge treatment, e.g. corona, plasma treatment; wave energy or particle radiation heat treatment B32B38/0036
• CPC Class Codes: B32B 5/022 Non-woven fabric
• CPC Class Codes: B32B 7/12 using interposed adhesives or interposed materials with bonding properties
• CPC Class Codes: Y10S 428/913 : Material designed to be responsive to temperature, light, moisture
• CPC Class Codes: Y10T 428/24273 : including aperture
• CPC Class Codes: Y10T 428/24322 : Composite web or sheet
• CPC Class Codes: Y10T 428/24331 : including nonapertured component
• CPC Class Codes: Y10T 428/24603 : Fiber containing component
• CPC Class Codes: Y10T 428/24612 : Composite web or sheet
• CPC Class Codes: Y10T 428/24826 : Spot bonds connect components
• CPC Class Codes: Y10T 442/197 : Including a nonwoven fabric which is not a scrim

Abstract

A three-layer laminated material is particularly useful for surgical drape reinforcing panels. The material has a first outer layer of liquid impervious material, an intermediate layer of absorbent material, and a second outer layer of plastic webbing. The webbing layer, which is on top when a drape covers a recumbent person, reduces linting from the absorbent layer without substantially reducing absorbency. The webbing layer is secured to the absorbent layer by a cold cure adhesive. In preferred embodiments, one or both of the outer layers are corona-treated materials and the intermediate layer is a nonwoven fabric.

Claims

1. A laminated reinforcing panel for a surgical drape, comprising

(a) a first outer layer that is liquid impermeable,

(b) an absorbent intermediate layer that overlies the first outer layer,

(c) a second outer layer that overlies the intermediate layer and is adhered to the intermediate layer by a cold cure adhesive, the second outer layer comprising a plastic web structure of spaced-apart bosses interconnected with strands, with the remaining area being open.

2. The panel of claim 1 in which the first outer layer comprises polyethylene film.

3. The panel of claim 1 in which the first outer layer comprises a corona-treated film.

4. The panel of claim 1 in which the intermediate layer comprises a nonwoven fabric.

5. The panel of claim 1 in which the intermediate layer incorporates an antimicrobial agent

6. The panel of claim 1 in which the second outer layer comprise a nonwoven plastic.

7. The panel of claim 1 in which the second outer layer comprises a corona-treated plastic.

8. The panel of claim 1 in which the open area in the second outer layer comprises at least about 30% of its total area.

9. The panel of claim 1 in which the adhesive is a moisture-cured polyurethane adhesive.

10. The panel of claim 9 in which the adhesive has a microfiber structure.

11. The panel of claim 9 in which the adhesive forms a dot pattern surrounded by adhesive-free areas, the adhesive covering less than half the total area.

12. A surgical drape having a top surface and a bottom surface and having secured to its top surface, in a region within which surgery is to be performed, the first outer layer of the panel of any of claims 1-7.

13. The drape of claim 12, further comprising a fenestration cut through the reinforcing panel and drape to provide access through the drape within the area covered by the reinforcing panel.