Surgery – Means and methods for collecting body fluids or waste material – Absorbent pad for external or internal application and...
Reexamination Certificate
2002-03-28
2004-10-26
Calvert, John J. (Department: 3761)
Surgery
Means and methods for collecting body fluids or waste material
Absorbent pad for external or internal application and...
Reexamination Certificate
active
06808516
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to a disposable wearing article for absorption and containment of bodily discharges.
Japanese Patent Application No. 1997-75390A discloses a disposable wearing article comprising pants composed of front and rear waist regions and a crotch region extending therebetween and transversely opposite side edge portions of these waist regions put flat and joined together to define a waist-hole and a pair of leg-holes, and a body fluid absorbent pad which has a liquid-pervious topsheet, a liquid-impervious backsheet and a liquid-absorbent core disposed between these two sheets and which is attached to the inner side of the pants and extending on the crotch region into the front and rear waist regions.
The front and rear waist regions of the pants are provided in transversely middle zones on respective inner sides with flexible suspender members extending from peripheral edge of the waist-hole toward the crotch region. The respective suspender members are formed at desired zones thereof with first fastener zones having stiffness higher than the suspender members. The pad is formed, on the other hand, on its front and rear end portions with second fastener zones having a stiffness higher than those of the top- and backsheets constituting the pad and adapted to be securely engaged with the first fastener zones. The second fastener zones of the pad may be securely engaged with the first fastener zone of the pants to attach the pad to the inner side of the pants before the article is put on a wearer's body.
With the article disclosed in the above-cited Application, the pad itself is not fixed to a wearer's crotch region and, in addition, the region of the pad except the second fastener zones is free to move relative to the pants. As a result, the pad easily moves back-and-forth and particularly right- and leftward in a wearer' crotch region. As the pad is apt to move readily from its desired position in the crotch region, bodily discharges such as urine and feces which should be absorbed and contained in the pants are likely to leak from the pants in the wearer's crotch region.
SUMMARY OF THE INVENTION
It is an object of this invention to provide a disposable wearing article improved so that a pad is not easily displaced from its proper position in the wearer's crotch region and able to prevent bodily discharges from leaking out from the wearing article in a wearer's crotch region.
According to this invention, there is provided a disposable wearing article comprising a pant member composed of front and rear waist regions opposed to each other and a crotch region therebetween wherein transversely opposite side edge portions of the waist regions overlaid and joined together so as to define a waist-hole and a pair of leg-holes, and a body fluid absorbent pad member lying inside the pant member and extending from the crotch region into the front and rear waist regions.
Further, the pad member has front and rear ends and transversely opposite side edges and a pair of elastic thigh-tightening bands. The thigh-tightening bands respectively have middle zones lying in the crotch region of the pant member and connected to side edges of the pad member, first free zones lying on a side of a front end of the pad member and extending toward side edges of the waist region and second free zones lying on a side of a rear end of the pad member and extending toward the side edges of the waist region. Front ends of the first free zones and rear ends of the second free zones are connected to the side edges of the waist region in vicinity of the leg-holes of the pant member while the middle zones and first and second free zones of the thigh-tightening bands extend generally parallel to the respective leg-holes of the pant member so as to substantially form loops.
This invention includes the following preferred embodiments: The front and rear ends of the pad are connected to the front and rear waist regions of the pant member.
The pad member has a pair of elastic first suspender bands extending from both sides of its front end toward the side edges of the waist region and a pair of elastic second suspender bands extending from both sides of its rear end toward the side edges of the waist region, and front ends of the first suspender bands and rear ends of the second suspender bands are connected to the side edges of the waist region in vicinity of the waist-hole of the pants portion.
The pant member is formed of a substantially liquid-impervious sheet and the pad is formed of a liquid-pervious topsheet, a liquid-impervious backsheet and a liquid-absorbent core interposed between these two sheets.
REFERENCES:
patent: 5449353 (1995-09-01), Watanabe et al.
patent: 5876392 (1999-03-01), Hisada
patent: 5940887 (1999-08-01), Rajala et al.
patent: 5947947 (1999-09-01), Endres et al.
patent: 6168585 (2001-01-01), Cesco-Cancian
patent: 6179820 (2001-01-01), Fernfors
patent: 6595976 (2003-07-01), Jitoe et al.
patent: 0 904 753 (1999-03-01), None
patent: 9-75390 (1997-03-01), None
Tsuji Tomoko
Uosawa Takako
Anderson C. Lynne
Calvert John J.
Long Butzel
Uni-Charm Corporation
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