Surgery – Means and methods for collecting body fluids or waste material – Absorbent pad for external or internal application and...
Reexamination Certificate
1997-09-10
2004-10-12
Calvert, John J. (Department: 3761)
Surgery
Means and methods for collecting body fluids or waste material
Absorbent pad for external or internal application and...
C604S359000, C604S360000, C604S364000
Reexamination Certificate
active
06803496
ABSTRACT:
This application relates to a method for maintaining or improving skin health in wearers of absorbent articles such as diapers, training pants, adult incontinence devices, feminine hygiene products, and the like. More particularly, the application relates to a method comprising the repeated use of absorbent articles that deliver a composition to the wearer's skin, so as to provide a skin protective barrier and/or a therapeutic benefit.
BACKGROUND OF THE INVENTION
Many types of disposable absorbent products, such as diapers, are available that have a high capacity for absorbing urine and other body exudates. Disposable products of this type generally comprise some sort of liquid-pervious topsheet material, an absorbent core, and a liquid-impervious backsheet material. Although these types of absorbent structures may be highly efficient for the absorption of liquids, it is well recognized that long-term wear of such structures may lead to skin which is compromised in terms of being over hydrated or exposed to skin irritants commonly found in body exudates. It is generally known that skin under absorbent articles is more susceptible to skin disorders, including diaper rash, erythema (i.e., redness), heat rash, abrasion, pressure marks and skin barrier loss. For example, 21 C.F.R. 333.503 defines diaper rash as “[a]n inflammatory skin condition in the diaper area (perineum, buttocks, lower abdomen, and inner thighs) caused by one or more of the following factors: moisture, occlusion, chafing, continued contact with urine or feces or both, or mechanical or chemical irritation.”
To address the concerns of skin disorders associated with wearing absorbent articles, the caregiver often applies skin protective products such as Vaseline®, medicated ointments, powders, etc. to the buttocks, genitals, anal and/or other regions before placing the absorbent article on the wearer. This procedure usually involves the caregiver applying the skin protective to their hands, and then wiping the same on the skin of the infant. To eliminate the need for this wasteful, messy, time-consuming, and easily forgotten procedure, there have been attempts to prepare absorbent articles which contain a protective or therapeutic skin care substance on the article's topsheet.
U.S. Pat. No. 3,585,998 to Hayford et al. teaches a disposable baby diaper, an interior liner of which carries an array of pressure-rupturable capsules containing baby oil. The patent teaches that it is desirable to break the capsules prior to using the diaper by applying pressure with such household items as a rolling pin, hand iron, etc. Articles disclosed by this patent have serious drawbacks. Namely, unless the capsules are ruptured by applying pressure prior to using the diaper or the bandage, the skin-care substance contained in the capsules is either not delivered at all or is delivered non-uniformly leaving some areas of skin uncoated.
U.S. Pat. No. 3,489,148 to Duncan et al. teaches a baby diaper comprising a hydrophobic and oleophobic topsheet wherein a portion of the topsheet is coated with a discontinuous film of oleaginous material. A major disadvantage of the diapers disclosed in the Duncan et al. reference is that the hydrophobic and oleophobic topsheets are slow in promoting transfer of urine to the underlying absorbent cores.
U.S. Pat. No. 5,643,588 to Roe et al. addresses some of the concerns presented by prior absorbent articles which were designed to deliver a skin protective material. In particular, Roe describes an absorbent article whose topsheet is surface treated with a lotion that comprises an emollient for facilitating easier cleaning of feces and other exudates and an agent which immobilizes the lotion so that it does not migrate from the point of initial application.
While the prior art describes articles designed to deliver compositions to provide skin care benefits, the prior art has failed to describe a regimen which results in maintained or improved skin health in regions of the wearer's body covered by absorbent articles, where the regimen does not require intervention from the caregiver in the form of manual application of skin care compositions. That is, the prior art has not recognized the importance of the repeated use of absorbent articles that automatically deliver sufficient levels of a composition to the wearer's skin that allows the maintenance or improvement of skin health in the region of the wearer covered by the absorbent article.
Accordingly, it would be desirable to provide a method: (1) wherein the condition of skin covered by the absorbent article is maintained in a natural, healthy condition or improved to a more healthy condition; and (2) that does not require intervention by the wearer or caregiver in the form of manual application of skin care agents.
Therefore, it is an object of the present invention to provide a method for maintaining or improving the skin health of an absorbent article wearer comprising repeated application of disposable absorbent articles that automatically deliver sufficient levels of a composition. In this regard, it is an object of the present invention to provide a method that comprises the application of absorbent articles which have a composition on a wearer-contacting surface, where the composition is transferable to the wearer's skin and is effective at maintaining or improving skin health.
These and other objects are obtained in accordance with the present invention, as will become readily apparent upon reading the following disclosure.
SUMMARY OF THE INVENTION
The present invention relates to a method for maintaining and/or improving skin health in the area of a wearer covered by an absorbent article, the method comprising the following steps:
(a) applying to the wearer an absorbent article having a skin care composition that provides a therapeutic and/or protective skin benefit upon transfer to the skin;
(b) transferring to the wearer at least a portion of the skin care composition during wear; and
(c) repeating steps (a) and (b) with one or more additional articles with sufficient frequency to maintain or improve the health of the skin covered by the absorbent article relative to the skin covered by an equivalent absorbent article that does not comprise the skin care composition, and without the need for manual application of skin protective agents (e.g., by the caregiver or wearer).
REFERENCES:
patent: 2804424 (1957-08-01), Stirn et al.
patent: 3489148 (1970-01-01), Duncan et al.
patent: 3490454 (1970-01-01), Goldfarb et al.
patent: 3567820 (1971-03-01), Sperti
patent: 3585998 (1971-06-01), Hayford et al.
patent: 3875942 (1975-04-01), Roberts et al.
patent: 3896807 (1975-07-01), Buchalter
patent: 3902493 (1975-09-01), Baier et al.
patent: 4112167 (1978-09-01), Dake et al.
patent: 4263363 (1981-04-01), Buck et al.
patent: 4324247 (1982-04-01), Aziz
patent: 4513051 (1985-04-01), Lavash
patent: 4556560 (1985-12-01), Buckingham
patent: 4569343 (1986-02-01), Kimura et al.
patent: 4623339 (1986-11-01), Ciraldo et al.
patent: 4666765 (1987-05-01), Caldwell et al.
patent: 4704112 (1987-11-01), Suzuki et al.
patent: 4753643 (1988-06-01), Kassai
patent: 4790836 (1988-12-01), Brecher
patent: 4882204 (1989-11-01), Tenenbaum
patent: 4900317 (1990-02-01), Buell
patent: 4904524 (1990-02-01), Yoh
patent: 4934535 (1990-06-01), Muckenfuhs et al.
patent: 4959059 (1990-09-01), Eilender et al.
patent: 4990144 (1991-02-01), Blott
patent: 4996238 (1991-02-01), Matravers
patent: 5043155 (1991-08-01), Puchalski et al.
patent: 5264460 (1993-11-01), Jakobson et al.
patent: 5321098 (1994-06-01), Lai et al.
patent: 5370132 (1994-12-01), Weber et al.
patent: 5415649 (1995-05-01), Watanabe et al.
patent: 5509915 (1996-04-01), Hanson et al.
patent: 5525346 (1996-06-01), Hartung et al.
patent: 5558655 (1996-09-01), Jezzi et al.
patent: 5609587 (1997-03-01), Roe
patent: 5635191 (1997-06-01), Roe et al.
patent: 5643588 (1997-07-01), Roe et al.
patent: 2019557 (1990-06-01), None
patent: 4136540 (1991-11-01), None
patent: 0 297 828 (1989-01-01), None
Elder Gretchen Louise
Roe Donald Carroll
Addington Eric T.
Calvert John J.
Kendall Dara M.
Patel Ken K.
Stephens Jacqueline F
LandOfFree
Method for maintaining or improving skin health does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for maintaining or improving skin health, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for maintaining or improving skin health will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3298375