MXPA99006298A - Thin comfortable interlabial absorbent structure - Google Patents

Abstract

An interlabial absorbent structure is disclosed. The interlabial absorbent structure comprises a pair of absorbent panels that are sufficiently flexible such that the panels can, at least partially, conform to the walls of a wearer's interlabial space. The panels are joined by an isthmus which is positioned furthest into a wearer's interlabial space when the interlabial absorbent product is worn. Alternative embodiments of the isthmus are also described which direct bodily fluids that are deposited thereon along the longitudinal length of the interlabial absorbent structure.

Description

INTERLABIAL ABSORBENT STRUCTURE. THIN. COMFORTABLE FIELD OF THE INVENTION The present invention is directed to absorbent articles such as catamenial devices, incontinence pads, or the like, more particularly, the present invention is directed to interlabial absorbent structures that are thin and flexible, such that they conform and remain in contact with the walls of the interlabial space of the user.

BACKGROUND OF THE INVENTION Disposable absorbent articles have been commercially available for many years and have found great worldwide success. For example, continuous improvements to catamenial devices have freed women from many of the drawbacks of their menstrual periods. However, further improvements are still needed. A class of catamenial device, interlabial pads, has the potential to provide even greater freedom from incontinence because of its small size, and reduced risk of leakage or leakage. Numerous attempts have been made in the past to produce an interlabial pad that would combine the best characteristics of tampons and sanitary napkins, while avoiding at least some of the disadvantages associated with each of these types of devices. Examples of these devices are described in U.S. Patent No. 2,917,049 issued to Delaney on December 15, 1959; patent of the United States No. 3,420,235 issued to Harmon on January 7, 1969; U.S. Patent No. 4,595,392 issued to Johnson et al. on June 17, 1986; and U.S. Patent No. 5,336,208 issued to Rosebluth et al. on December 24, 1991 and August 98, 1994, respectively; and in U.S. Patent No. 4,484,429 issued to Vukos et al. on January 16, 1996. A commercially available interlabial device is the Fresh'n Fit® Padette which is marketed by ATHENA Medical Corp., of Portland, OR. , and which is described in U.S. Patent Nos. 3,938,873 and 4,175,561 issued to Hirschman on October 5, 1976 and November 27, 1979; respectively. However, many of these devices have not found great commercial success. There are disadvantages associated with all of the devices listed above. For example, the device described in the Delaney patent does not appear to be capable of easy insertion, due to the possibility that the layers of the absorbent material open upwards during insertion. The commercially available Padette product may cause discomfort to the wearer, even if inserted appropriately. Also, the Padette product may not completely cover the urethra or vaginal opening, and may not provide protection when a user bends over. In this way, here is the opportunity to provide an improved interlabial pad. The walls of the interlabial space are very convoluted with many folds and wrinkles. In this way, it is desirable to provide interlabial absorbent structures having flexibility such that the absorbent structure can conform, at least partially, to the walls of the user's labial space. This compliance, particularly in all of a wide range of user movements, can result in improved retention of bodily fluids within the absorbent structure and reduced risk of leakage and staining of the undergarment, clothing or sheets. Also, because the volume of the interlabial space is small, an interlabial device must be dimensioned so as not to exert undue pressure on the walls of the interlabial space. A user may experience discomfort due to improper sizing. This dimensioning must also take into account the possibility that when a new interlabial device is inserted, it may not be inserted in an optimal position for convenience. In this wayIt is an object of the present invention to provide an interlabial absorbent structure with performance properties (such as ease of use, resistance to leakage or leakage, and the like) that equals or exceeds those of contemporary interlabial devices. It is a further object of the present invention to provide an interlabial absorbent structure having sufficient flexibility to conform to the convoluted surface of an interlabial space of the female user and remain in contact therewith throughout a wide range of movements of the wearer. It is yet another object of the present invention to provide an interlabial absorbent structure having a volume and mechanical properties such that the device exerts a minimal pressure on the walls of the labial space (i.e., the inner surfaces of the labia minora and greater).

BRIEF DESCRIPTION OF THE INVENTION The present invention relates to absorbent structures. More particularly, the invention relates to an absorbent structure that is used interlabially by female users for catamenial purposes for protection of incontinence, or for other non-menstrual vaginal discharges. In a preferred embodiment of the present invention, the interlabial absorbent structure comprises a pair of absorbent panels that are joined by an isthmus extending longitudinally. In use, the isthmus is inserted in an interlabial space of the user such that it is in close proximity to its inner surface of the vestibule. The panels extend laterally outward from the isthmus and are in contact with the walls of the wearer's vaginal vestibule, providing resistance to leakage around the interlabial absorbent structure. The absorbent panels are sufficiently flexible such that they conform at least partially to the convoluted surface of the walls of the space Nterlabial. This flexibility also allows the interlabial absorbent structure to respond to a wide range of movements of the wearer without being a source of discomfort for the wearer. The panels also have sufficient absorbent capacity provided with sufficient absorbency to absorb and retain discharged exudates from the body of the user. Preferably, each panel comprises a fibrous web. More preferably, each panel comprises a tissue web. The isthmus joins the proximal edges of the panels to form the interlabial absorbent structure. The isthmus may comprise an extension of the panels or a separate element to which the panels are joined. Preferably, the isthmus comprises a extension of the panels. In a preferred embodiment, the isthmus also directs any of the fluids that may be deposited thereon to flow in the direction ^ longitudinal making the most complete use of the absorbent capacity of the panels. In various embodiments, this property of fluid direction can be provided by a densified portion of the fibrous structure, a "V" shaped channel, an extension of the plurality of layers of tissue comprising the preferred embodiment of each panel.

BRIEF DESCRIPTION OF THE DRAWINGS Although the description concludes with the claims pointing out in a particular way and claiming differently to the exposed matter that is considered as formant of the present invention, it is believed that the invention will be better understood from the following description taken in combination with the accompanying drawings, in which: Figure 1 is a plan view of a preferred embodiment of the interlabial absorbent structure of the present invention, shown fully flattened with its surface that is in contact with the body facing the observer. Figure 2 is a perspective view of the interlabial absorbent structure of the present invention in a folded configuration ready for insertion into an inter-labial space of the wearer. Figure 3 is a bottom view of an alternate embodiment of the interlabial absorbent structure of the present invention; Figure 4 is a bottom or end view of the interlabial absorbent structure of the present invention showing a second alternative embodiment of the invention; Figure 5 is a bottom view of the interlabial absorbent structure of the present invention showing a third alternate embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION As used herein, the term "absorbent article" refers to devices that absorb and contain exudates from the body, and, more specifically, refer to devices that are placed against or close to the wearer's body to absorb and contain the various exudates discharged from the body. The term "disposable", is used herein to describe absorbent articles that are not intended to be washed or otherwise restored or reused as an absorbent article (ie, they are intended to be discarded after a single use, and preferably, to be recycled). , formed in compost, or otherwise arranged in an environmentally compatible manner). A "unitary" absorbent article refers to absorbent articles that are formed of separate parts joined together to form a coordinated entity, such that they do not require separate manipulated parts such as a separate fastener and pad. A preferred embodiment of a unitary disposable absorbent article of the present invention is the interlabial absorbent structure 20 shown in Figure 1. As used herein, the term "interlabial absorbent structure" describes an absorbent article that resides at least partially within the interlabial space of a user As used herein, the term "interlabial space" refers to the space in the pudendal region of the female anatomy, which is located between the inner surfaces of the labia majora that extend into the vestibule. Located within this interlabial space are the labia minora, the vestibule, and the genitourinary main limbs, including the clitoris, the urethral orifice, and the orifice of the vagina. The normal medical authorities teach that the vestibule refers to the space joined laterally by the surfaces internal of the labia minora and that extends internally towards the inner surface between the clitoris and the orifice of the vagina. Therefore, it will be recognized that the space - ^^ interlabial as defined above, can refer to the space between the inner surfaces of the labia minora, including the space between the inner surfaces of the labia minora also known as the vestibule. The interlabial space for purposes of The present description does not extend beyond the vaginal opening into the vaginal interior. The term "lips", as used herein, generally refers to both major and minor lips. The lips end previously and later in the anterior commissure and the posterior commissure, respectively. It will be recognized by those skilled in the art that there is a wide range of variations among women with regarding the relative size and shape of your labia majora and labia minora. For purposes of the present description, however, these differences should not be specifically applied. It will be recognized that the provision of the interlabial structure within the inter-labial space of a user as defined above will require placement between the inner surfaces of the labia majora without considering the precise location of the boundary between the labia majora and the labia minora. a particular user. For a more detailed description of this part of the female anatomy, tension should be directed to Gray's Anatomy, Runníng Press 1901 Ed. (1974) to 1025-1027. As used herein, the term "pudendal" refers to the externally visible female genital organs.

General description of the fabric-absorbent structure of the present invention. The interlabial absorbent structure 20 shown in Figure 1, at least partially, blocks and absorbs and more preferably blocks, intercepts and completely absorbs the flow of menses, urine, and other body exudates from the vaginal opening and urethra of the wearer . The interlabial absorbent structure 20 should be of a suitable size and shape that allows at least a portion of it to fit comfortably within the interlabial space of the wearer and cover the vaginal opening and, preferably, also the urethra of the wearer . The interlabial absorbent structure 20 is at least partially held in place by exerting a slightly laterally outwardly oriented pressure on the walls of the user's lipid space and by the capillary forces between the panels 22 thereof and the naturally moist walls. of the interlabial space. The interlabial absorbent structure 20 of the present invention can be used as a "unique" product. Alternatively, it can be used as a backing for a tampon or in combination with a sanitary napkin, a pantyhose, or a pad for incontinence during menstrual use or incontinence. The interiabial absorbent structure 20 can be used with conventional panties or this can be used with menstrual pants. As shown in Figure 1, the interlabial absorbent structure 20 has two centerlines, a longitudinal centerline L and a transverse centerline 5 T. The term "longitudinal", as used herein, refers to a line, axis or direction in the plane of the interlabial absorbent structure 20 which is generally aligned with (e.g., approximately parallel to), a vertical plane that divides a user standing in left and right body halves when the interlabial absorbent structure 20 is used. The terms "transverse", or "lateral", as used herein, are interchangeable , and refer to a line, axis or direction that is located within the plane of the interlabial absorbent structure 20 which is generally perpendicular to the longitudinal direction. The interlabial absorbent structure 20 also has a body surface 20T, which is in contact with the walls of the interlabial space of the wearer, and an opposite posterior surface 20R. The body and back surface of other elements of the present invention will be described in a similar manner with a "T" that is * annexed to the reference number of the element, to distinguish its body surface and a "R" that is attached to designate its posterior surface. The present invention is directed to an interlabial absorbent structure. Figure 1 is a plan view of the interlabial absorbent structure 20 showing a preferred embodiment of the present invention. As shown in Figure 1, the interlabial absorbent structure 20 preferably comprises a pair of laterally opposed panels 22A and 22B. (Similar nomenclature will be used with respect to other elements that comprise the panels, that is, the letters A and B will be appended to the reference numbers for the various elements of the panel whenever they are necessary or advantageous in relation to an element of a panel specific). The panels 22A and 22B are connected by a narrow isthmus 24. Although other shapes, such as oval, trapezoidal, irregular (eg, butterfly), and the like, are suitable, each panel preferably has an approximately rectangular configuration (rounded rectangular ). Each panel has a distant longitudinal side edge 21, a proximal longitudinal side edge, and a pair of end edges 25 extending transversely, the end edges 25, the distant edge 21 and the proximal edge 23 defining a periphery for each panel 22. panels 22 also have a longitudinal length X and a transverse width Y. The interlabial absorbent structure 20 of the present invention further comprises an isthmus 24, which connects the panels 22A and 22B. the isthmus 24 also comprises at least one fold line in such a way that the interlabial absorbent structure is able to better conform to the complex anatomy of the interlabial space of the wearer. The isthmus 24 is the part of the interlabial absorbent structure that is placed further inward in the interlabial space of the user. The isthmus 24 also preferably directs any of the bodily fluids that may be deposited thereon in a longitudinal direction. Each of these components is discussed in more detail in the following sections. The interlabial absorbent structure 20 may optionally also comprise extraction means (not shown), such as a cord, a loop, a tongue, or the like, to aid in the removal of a soiled or soiled device. These extraction means would be fixed to the surface 22R (i.e., the surface opposite the body surface 20T of the interlabial absorbent structure 20), and would extend at least partially outside the wearer's labia. A tongue 5 can also serve as an insertion aid providing a hardened member for fastening, such that the fingers of the wearer are protected against staining by the panels 22 when the interlabial absorbent structure 20 is inserted. This insertion tab it can have a dimension in the longitudinal direction of between about 20 mm and about 76 mm and a gauge less than 3 mm. The tongue can have a length between about 10 mm and about 5 60 mm, preferably between about 15 mm and about 40 mm. This should be sufficiently rigid so that it is easily held by the user's fingers as the interlabial absorbent structure 20 is inserted into its interlabial space. The tongue must also be flexible enough to adjust to the deformation of the labial space caused by a sitting position so as not to be a ÍD source of discomfort. The interlabial absorbent structure 20 also preferably tears into a plurality of small fragments when the structure 20 is exposed to water and moderate agitation. For example, a nterlabial absorbent structure 20 preferably preferably fragments into at least two fragments when deposited in a toilet.

It is conventional and is exposed to relatively mild agitation caused by the discharge of water and passage through a typical home drainage system. Even more Preferably, the interiabial absorbent structure comprises biodegradable components. As used herein, the term "biodegradable component" is intended to describe a material with more than about 70 biodegradation (percentage of theoretical carbon dioxide evolution), after 28 days when measured in accordance with the Modified Sturm Test which Method 301 B has been designated by the Organization for economic cooperation and development. Preferably, the materials comprising the present invention have a biodegradation greater than about 80% and, more preferably, the biodegradation is greater than about 90%.

The panels As the panels 22A and 22B preferably reflect each other, the structure of a single panel 22 will be described with the understanding that the same structure is preferably repeated in the opposite panel. Each panel 22 makes contact with the walls of the user's labial space helping to maintain the interlabial absorbent structure 20 in a desired location throughout a wide range of user movements, and also minimizing run-off of bodily fluids. around the interlabial absorbent structure 20. The panels 22 also provide the absorbent capacity to the interlabial absorbent structure 20 for 1Q store these body fluids. The structure of a panel 22 is shown month clearly in Figure 2. As can be seen there, a panel 22 comprises a plurality of individual layers 26, these layers can be provided, for example, by folding a web of material in a plurality of layers. folds or arranging sheets of the material on top of one another and joining the sheets along at least one edge of the same. Preferably, the layers 26 are formed by folding a web of material in a plurality of folds. ^ A panel 22 can comprise any absorbent medium that is capable of absorbing or retaining liquids (e.g., menses and / or urine). A panel 22 can be manufactured from a wide variety of liquid absorbent materials commonly used in sanitary napkins and other absorbent articles, such as crushed wood pulp which is generally referred to as an air filter. Examples of other suitable absorbent materials include accreted cellulose wadding; blown polymers in the molten state, including coform; chemically hardened, modified or crosslinked cellulosic fibers (for example 5 rayon); synthetic fibers, such as polyester fibers, including pleated fibers and fibers having capillary dimension channels provided thereto by the extrusion process; peat moss, including combinations of peat moss and other materials; tissue, including tissue wraps; and laminates of tissue; absorbent foams (both blown foams and high internal phase emulsion foams (HIPE)); absorbent sponges; superabsorbent polymers; gelling absorbent materials; or any equivalent material or combinations of materials, or mixtures thereof. Preferred absorbent materials comprise: tissue webs (air laid and wet laid frames which are both suitable); woven material webs, nonwoven webs (e.g., carded webs, spun webs, blown webs, and the like); and thin layers of foam. In the preferred embodiment shown in Figures 1 and 2, each panel 22 comprises a weft of folded tissue. The tissue web is preferably provided with a temporary wet strength additive to allow the tissue web to resist loss of strength due to absorbed liquids, which causes the interlabial absorbent structure to fragment and bulge as it is exposed. to the movements of the user. The level of the temporary wet strength additive must be sufficiently high, such that the absorbent structure 20 will resist fragmentation and bulging, but not too high that the interlabial absorbent structure 20 fails to "detach" in a pipe system. domestic (individual absorbent articles are frequently discarded by being discharged by water in a toilet). The interlabial absorbent structure of the present invention will be dispersed in at least two fragments within about 120 minutes of being placed in water at slightly stirred room temperature as described in the TEST METHODS section below. Preferably, the disposable lipid absorbent structure 20 will be dispersed in a plurality of small fragments within about 30 minutes of being placed in room temperature water with moderate agitation, more preferably within about 15 minutes of being exposed to such water at room temperature. with moderate agitation. Suitable temporary wet strength additives are the glyoxalated polyacrylamide resins available from Cytec Industries, Inc. of Stanford, CT under the designation Parez ™. Particularly preferred is Parez ™. 631 NC When Parez ™ 631 NC is used at a level between about 0.5% and about 1.0% in wet-laid tissue, the interlabial absorbent structure 20 has a satisfactory balance of mechanical integrity during use and dispersibility during waste. The resistance to wet breakage has also been used by the technique as a measure of the sensitivity of a paper! hygienic to water exposure.

Preferably, the wet strength adhesive provides the tissue web with a wet break resistance of between about 15 grams and about 200 grams. More preferably, the wet breaking strength is between about 15 grams and about 50 grams. A method for measuring wet breaking strength is described in the section METHODS OF TRIAL. Suitable tissue webs comprise at least 50% cellulosic fibers and have a basis weight of between about 10 grams per square meter and about 60 grams per square meter. These tissue webs can be produced using wet papermaking techniques as are known in the art or using air placement techniques as are well known in the art. These tissue webs may also comprise thermoplastic fibers, which provide strength and resilience to the web. Wefts that comprise at least 90% cellulosic fibers are preferred. Particularly preferred tissue materials comprise a wet laid tissue having a basis weight of about 58 grams per square meter, which is available from Fort Howard Corp., Green Bay, Wl, or the moist placed tissue that has a weight base of approximately (30 grams per square meter), which is available from Procter & Gamble Company as CHARMIN bath tissue. As noted above and shown in Figure 2, the preferred structure of a panel 22 is provided by folding a tissue web into a plurality of folds to create the layers 26. As can also be seen in Figure 2, the layers 26 are arranged in a laterally side by side relationship. The tissue web can be folded in such a way that it has any suitable number of layers. Preferably, the number of layers 26 is sufficient to provide the absorbent capacity referred to the interlabor absorbent structure 20 (unless auxiliary capacity is provided in the form of a superabsorbent polymer or the like), not yet so large as to cause discomfort to the user. Preferably the tissue web is folded in such a manner that the dry gauge of the interlabial absorbent structure 20 is less than about 7 mm, more preferably less than about 5.5 mm, even more preferably less than about 4.5 mm. The number of layers provided to each panel 22 by such bending will depend on the gauge of the weft of the tissue being folded. A method to measure dry caliber is provided in the section "TEST METHODS". Layers 26 are preferably connected or joined to at least one of their distant edges 21 or their proximal edges 23, in some suitable way to ensure that the panels 22 remain in a bent configuration and do not unfold. The layers 22 can be joined by a variety of means including folding, pressure bonding (pleating), adhesive means, sewing (for example, with cotton or rayon yarn), and thermal bonding (if the tissue web also comprises binder fibers). thermoplastics). Preferably, the layers are joined by folding the tissue web into a plurality of folds, such that the layers 26 are at least partially joined at their distant edges 21 and joining the layers 26 to the proximal edges 23 to define the isthmus 24 using means known in the art. The stitching is particularly preferred for joining the layers 26 on the proximal edges 23. Each panel 22 should be of a suitable size and shape such that the interlabial absorbent structure 20 fits comfortably within the interlabial space of the wearer. That is, each panel 22 must be dimensioned in such a way that the panel covers the "direct line of sight", from the distant edge of a larger lip of the wearer to her vaginal opening. As noted above, a panel 22 preferably has a rounded rectangular shape as shown in Figure 1. Preferably, each Panel 22 has a surface area of between about 8 square cm and about 65 square centimeters. More preferably, the surface area of each panel 22 is between about 10 square cm and about 35 square cm. Stated differently, each panel 22 may have an "X" dimension of between about 5 cm and about 15 cm, and a "Y" dimension of between approximately 1.5 cm and approximately 5 cm. The thickness or gauge of each panel 22 is also of significance with ^ fc regarding the comfort experienced when using the absorbent structure Nterlabial 20 and for the absorbent capacity of the nterlabial absorbent structure 20. As distinguished above, the gauge should be sufficient to provide the capacity absorbent required to the interlabial absorbent structure 20, not yet so large to cause discomfort to the wearer. Preferably, the gauge of each panel 22 is between about 1 mm and about 3.5 mm, preferably between about 1.5 mm and 3 mm. More preferably, the gauge of each panel 22 is approximately 1.5 and 2.5 mm. When the interiabial absorbent structure 20 is folded for use as shown in Figure 2 and fully saturated with a 0.9% aqueous saline solution, the gauge should be less than about 15 mm, preferably less than about 6 mm, and more preferably less than about 4 mm under a confining pressure of 0.25 psi (1.7 kPa). A method for measuring wet and dry gauge is provided in the TEST METHODS section below. The interlabial absorbent structure is preferably provided with sufficient absorbency to absorb and retain exudates discharged from the wearer's body. The absorbent capacity is controlled by the number and composition of each of the individual layers 26, the volume of the interlabial absorbent structure 20 and the presence (or absence) of superabsorbent polymers, absorbent materials of gelation or the like. Depending on the specific structure chosen for a panel 22, the panel can have an absorbent capacity for a 0.9% aqueous saline solution of between about 1 gram and about 30 grams. Preferably, the absorbent capacity is between about 1 gram and about 15 grams, more preferably between about 2 grams and approximately 10 grams, of the 0.9% aqueous saline solution. A method for -measure the absorbent capacity is given in the section "TEST METHODS". ^ fc Each panel 22 is also preferably flexible enough to conform to the convoluted surface of an interlabial space of the user. This flexibility also allows the interlabial absorbent structure to respond to movements of the user without exerting a remarkable force on her body (that is, the high flexibility increases the comfort for the user). This flexibility can be characterized as follows. If the panels have a stiffness less than the stiffness of a single sheet of toilet paper, such as CHARMIN, they are too flexible and the risk of bulging during use is unacceptably high. If the panels 5 have a stiffness similar to the rigidity of a conventional writing paper sheet, they are too rigid and the panels would be unable to conform to the convolutions of the walls of the interlabial space and respond to the movements of the user. In an alternate embodiment (not shown), each panel 22 may be provided with a plurality of preferential bending lines to adjust to non-symmetrical spreading or extension of the lips during certain movements, such as those when a leg is crossed to the side or a Asymmetric crouching movement. In addition, this plurality of preferential bending lines is also advantageous because the walls of the interlabial space may not be symmetrical, often, a lip of the labia minora or labia majora is larger than the other. In a preferred embodiment of the present invention, the Inner layer 27 of each panel 22 comprises a tissue having a higher resistance to wet breaking than the wet strength of the remaining layers 26. Since the fingertips of the The user is more likely to be in contact with the inner layer 27 when the interlabial absorbent product 20 is inserted or removed, this higher rupture strength provides additional resistance to "continuous thrust", particularly when the interlabial absorbent structure 20 is wet with bodily fluids absorbed, without substantially affecting other properties. This strength can provide a user with additional security that his or her hands will not be unacceptably stained when inserting or removing the interlabial absorbent structure 20. Suitable tissue materials have a wet break strength of at least about 30 grams and at least twice the wet breaking strength of the tissue comprising the layers 26, preferably the wet breaking strength of the inner layer 27 is greater than about 50 grams. A suitable tissue has a basis weight of about 14 pounds per 3,000 square feet, comprises the level of the temporary wet strength additive required to provide the desired wet break strength, and can be made using the methods described in the patent No. 3,301, 746 issued to Sanford et al. on January 31, 1967. Since the inner layer 27 of this preferred embodiment comprises a different material than the remaining layers 26, it may be attached to the remaining layers. using means known to those with knowledge in the art. For example, the inner layer 27 can be attached to the remaining layers 26 using an adhesive count (not shown) other of these means as can be known for joining two layers of material.

Optional panel components If desired, each panel 22 may also comprise other optional components. For example, each panel may comprise a top sheet as its surface that is in contact with the body 22 T or a top sheet as its back surface R. If the interlabial absorbent structure 20 also comprises a top sheet and a back sheet, the sheet The upper sheet and the back sheet are preferably joined together along the distant edge 23 and the end edges 25 of each panel 22. The top sheet is docile to feel soft, and non-irritating to the wearer's skin. In addition, the upper sheet is permeable to liquid allowing liquids (for example menses and / or urine) to easily penetrate through its thickness. A suitable top sheet can be manufactured from a wide range of materials such as woven and nonwoven materials; polymeric materials such as thermoplastic films formed with openings, plastic films with openings and hydroformed thermoplastic films; porous foams; cross-linked foams; crosslinked thermoplastic films; and thermoplastic canvases. Suitable woven and nonwoven materials may be composed of natural fibers (for example, wood or cotton fibers), synthetic fibers (for example, polymer fibers such as polyester, polypropylene or polyethylene fibers), or from a combination of natural and synthetic fibers. A particularly preferred nonwoven material for use as the top sheet comprises a spunbonded hydrophilic material having a basis weight of about 23 grams per square meter as supplied by Corovin Penne GmbH, Germany as Corolind H23GSM. The body surface of the upper sheet is preferably hydrophilic to help the liquid to be transferred faster through the upper sheet than if the body surface were not hydrophilic, to decrease the probability that the . menstrual fluid flows out of the upper sheet instead of flowing into and being absorbed by e! absorbent core. For example, surfactant may be incorporated into the polymeric materials of a formed film topsheet as described in U.S. Patent Application No. 07 / 794,745 filed November 19, 1991 by Aziz, et al. the disclosure of which is incorporated here by reference. Alternatively, the body surface of the topsheet can be made hydrophilic by treating it with a surfactant such as is described in the US Pat. ^ fc United States No. 4,950,264 issued to Osborn on August 21, 1990, the disclosure of which is incorporated herein by reference. The backsheet is preferably impermeable to body fluids 0 (eg, menses and / or urine), and is preferably applied from a thin plastic film, although other flexible liquid impervious materials may also be used. As used herein, the term "flexible" refers to materials that are docile and will readily conform to the shape and general contour of the human body. The backsheet provides additional protection for a user 5 against staining their hands when an interlabial absorbent structure 20 of the present invention is inserted or removed. In this manner, the backsheet may comprise a woven or non-woven material, polymeric films such as polyethylene or polypropylene thermoplastic films, or composite materials such as a film-coated nonwoven material. For example, the backsheet may comprise a polyethylene film having a thickness of from about 0.012 mm to about 0.051 mm. Exemplary polyethylene films are manufactured by Clopay Corporation of Cincinnati, Ohio, under the designation P18-0401 and by Ethyl Corporation, Visqueen Division, of Terre Haute, Indiana, under the designation XP-39385. More preferably, the backsheet comprises a weave of tissue impregnated with a resin to make the tissue web that is water resistant. These water-resistant tissue webs can be produced according to the process described in U.S. Patent No. 5,558,344 issued to Ahr et al. On November 26, 1996, the disclosure of which is incorporated herein by reference. .

The isthmus As noted above, the interlabial absorbent structure 20 comprises two panels 22A, 22B which are joined by an isthmus 24. The isthmus 24 joins the panels 22A, 22B and provides a fold line preferable to form the interlabial absorbent structure. in a suitable configuration to be used.

Preferably, the isthmus 24 also provides the means for longitudinally directing any of the fluids that may be deposited thereon. The isthmus 24 may comprise an extension of the material comprising the panels 22A and 22B or this may comprise a separate element to which the panels 22A, 22B are joined. preferably, the isthmus comprises an extension of the material comprising panels 22A, 22B. In its simplest execution, the isthmus is merely a region between the panels 22A and 22B when the panels are folded. As noted above, panels 22 preferably have a rounded rectangular configuration. This means that the isthmus 24 would comprise the proximal edges 23A, 23B of the panels 22A, 22B in this simpler embodiment. Preferably, the isthmus 24 is defined by the preferential fold lines which define the proximal edges 23A, 23B as shown in Figures 1 and 2. Preferably, however, the isthmus 24 has a measurable length (preferably slightly shorter than the length X of the panels 22), and a width that can be defined as the lateral distance between the proximal edges 23A, 23B of the panels 22. The lateral distance between the proximal edges 23A, 23B is between approximately 1 mm and approximately 7 mm Preferably, this lateral distance is between about 2 mm and about 6 mm. More preferably the distance is between about 3 mm and about 5 mm. One skilled in the art will recognize that this lateral distance may be a little greater than the combined caliber of the two panels 22A, 22B, which comprises the preferred embodiment of the present invention. Applicants have found that the walls of the interlabial space are surprisingly insensitive, except for the portion closest to the outer surface of the labia majora and the transition zone between the interlabial space and the vagina (i.e., the ring of the hymen) . This means that any portion of the interlabial absorbent structure 20 that, when the structure is used, is located in these relatively insensitive portions can have a surprisingly larger caliber. In other words, the isthmus 24, as mentioned above, can have a caliber (lateral distance), which is greater than the caliber of the panels (a part of the panels can extend outside the interlabial space that places that portion in the sensitive region of the interlabial space). As a result the isthmus 24 can be designed to provide the additional performance benefits for the interlabial absorbent structure 20 by taking advantage of this "extra" gauge. Figures 3 to 6 show bottom or end views of the interlabial absorbent structures having various alternate embodiments of the isthmus 24. Each of these embodiments provides the additional performance benefits for the interlabial 20 absorbent structure. These will be discussed individually below. . In Figure 3, the isthmus 24, comprises a compression zone where the part of the interlabial absorbent structure 20 which is located between the proximal edges 23A, 23B of the panels 22A, 22B (ie the isthmus 24), has been compressed to provide a compression zone to promote the longitudinal distribution of bodily fluids that are deposited on the interlabial absorbent structure 20. As distinguished above, the isthmus 24 is that part of the interlabial absorbent structure 20 that is placed further toward a nterlabial space of the user. Therefore, this will be the first portion of the interlabial absorbent structure 20 that intercepts bodily fluids that are released through the vaginal opening or through the urethra. In this way, the bodily fluids deposited on the isthmus 24 will be stimulated to flow along the isthmus through the compression zone making the most complete use of the absorbent capacity of the panels 22A, 22B. If desired, the isthmus 24 of this mode it may comprise alternating regions of lower or higher density (not shown). This would provide the additional advantage of increased acquisition speed in areas with lower density (ie, they have a density similar to panels 22), and flow along the isthmus 24 when an acquisition zone becomes saturated in areas with higher density (i.e., having the compressed density discussed above). Compressing the region between the proximal edges 23A, 23B such that the isthmus 24 comprises a compression zone, can be made using means known in the art. For example, the part of the interlabial absorbent structure 20 comprising the isthmus 24 can be passed through a gripping space that increases the density thereof, while the rest of the interlabial absorbent structure 20 is not densified. Although the density in the compression zone would be increased by this processing step, it should not be increased so much that the absorbance velocity is unacceptably low (it is well known that the absorbance velocity and density have an inverse relationship for the structures fibrous such as the preferred multiple tissue structure of the present invention). It has been found that a density similar to the density of the channels in the ALWAYS sanitary napkins with channels that are available from Procter & Gamble Company, Cíncinnati, Ohio, provides a satisfactory balance between the longitudinal direction of! fluid and speed of absorbency. A second alternate embodiment of the isthmus 124 is shown in Figure 4. In this case, the portion of the interlabial absorbent structure 20 that is located between the proximal edges 23A, 23B has been bent such that the isthmus 124 adopts a -way V. This "V" shape provides a channel 127 for longitudinally directing bodily fluids that can be deposited on the 12th isthmus. An expert in technical art will recognize that a "V" shape is not the only way which will provide a suitable channel for the longitudinal direction of bodily fluids. A non-limiting list of other suitable forms include: semicircular, U-shaped and any other type 0 capable of forming a continuous channel that is open at the top. The "V" shape is preferred because the formation of the same uses conventional bending techniques that is integral. Preferably, the isthmus 124 further comprises an elastic member 128 that is disposed below the fibrous portion 125 of the isthmus 124 as also shown in Figure 4. The "V" shaped channel 127 of the alternating mode of the isthmus 124 shown in Figure 4, it distributes bodily fluids deposited in the longitudinal direction in a manner similar to that described above. This bent structure has the additional advantage of having a faster acquisition speed than the compression zone mode shown in Figure 3. This improved acquisition speed is due to the fact that the fibrous tissue structure of the preferred embodiment of the interlabial absorbent structure 20 as described above is not densified. In contrast, the capillaries of the same are more open with a resulting increase in the speed of acquisition. Preferably, the isthmus 24 further comprises an elastic "M" shaped member, 128, disposed below the fibrous portion 125 as shown in Figure 4. The elastic member 128 serves two purposes: 1) the elastic member 128 serves to resist the compression forces due to the lips of the wearer that would tend to close the channel 127 and 2) the legs of the "M" serves to extend the panels 22A, 22B apart with the resulting improved contact with the walls of the interlabial space . The elastic member 128 needs to be rigid enough to withstand the total closure of the channel 127 (i.e., have sufficient compressive strength) not even be so rigid as to be a source of discomfort for the wearer. Examples of some suitable non-absorbent materials that can be placed below the fibrous portion 125 include thermoplastic materials, polyethylene materials, polypropylene, synthetic foams, films or non-woven materials, which have the required compressive strength. An exemplary foam material for use as the elastic member 128 is a closed cell polyethylene foam crosslinked by radiation known as VOLARA 2A obtained from Voltek Corp., Lawerence, MA. The "V" shaped configuration of the isthmus mode 124 shown in Figure 4 can be formed by the following method: 1) providing an elastic member 128 that has been preformed into an "M" shape, 2) providing a joining means "not shown", for attaching the elastic member 128 to the fibrous portion 125 for the upper surface of the elastic member, 3) arranging the elastic member 128 along the longitudinal centerline L and adjacent to the surface lower portion of the fibrous portion 125, and 4) depress the fibrous portion 125 such that the lower surface thereof contacts the fastening means, which attach the fibrous portion 125 to the elastic member 128 and cause the isthmus 124 to assume a "V" configuration. A third embodiment of the isthmus is shown 224 in Figure 5. In this embodiment, the layers 26 extend a distance "Z" beyond the proximal edges 23A, 23B of, the panels 22. The panels 22A, 22B are joined at their proximal edges 23A, 23B by a plurality of discrete securing means 230. As one skilled in the art will recognize the space between the extended portion of the layers 22 promotes the longitudinal distribution of bodily fluids that are deposited on the isthmus 224. Also, since the securing means 230 is spaced apart, the structure shown in Figure 5 provides a path for these deposited fluids to flow to the volume between the layers 26 between the panels 22A, 22B (as discussed above), the volume gap between the layers 26 provide the ability for absorption of cell fibrils, blood clots, and the like that would otherwise occlude the capillaries within the layers of individual tissue. This isthmus modality which is described above, and shown as 224 in Figure 5, comprises an extended portion 225 of the material comprising the panels 22. The portion 225 extends a distance "Z" beyond the proximal edges 23A, 23B of the panels 22 to create the isthmus 224. As will be recognized, the distance "Z" is important in that: 1) if "Z" is too short, the isthmus 224 will be difficult to manufacture or 2) if "Z" "is too large, the extended portion 225 will have a tendency to retract which can block the path to the hollow volume between the layers 26. The difficulty of insertion can also be increased if" Z "is too large.

Preferably "Z" is between about 1 mm and about 5 mm. More preferably, "Z" is between about 1 mm and about 3 mm. The "Z" dimension, in combination with the material properties comprising the layers 26 also defines the compression stiffness of the isthmus 224. The stiffness or inflexibility of the isthmus 224 will affect the wearing comfort of the interlabial absorbent structure 20. The stiffness The compression must be less than or equal to approximately 500 grams. Preferably, the compression stiffness is less than about 300 grams and more preferably less than or equal to about 200 grams. A method for compression stiffness is given in the TEST METHODS section. The panels 22A, 22B are joined at their proximal edges 23A, 23B using a plurality of discrete securing means 23 to form the isthmus 224. The discrete securing means 230 may comprise any of the means known in the art for attaching the panels 22A , 22B in a plurality of spaced apart locations along their proximal edges 23. For example, panels can be joined using seams (for example, with cotton or rayon yarn), thermal bonds (if the layers comprise a thermoplastic material). ), adhesive points or any other means of securing as known in the art. Preferably, panels 22A, 22B are joined by stitching together. To use the interlabial absorbent structure of the present invention, a wearer would fold the structure along its longitudinal centerline L in such a way that it adds a configuration similar to that shown in Figure 2. It would attach the structure adjacent to the distant edges. 21 A, 21 B of it, would extend its lips and insert the structure in such a way that the isthmus 24 is in close proximity to its internal pelvic surface. When she releases the distant edges 21 A, 21 B her lips will close around the nterlabial absorbent structure 20 keeping it in place.

As discussed above, the panels 22A, 22B will conform to and remain in contact with the walls of the wearer's interlabial space throughout the broad range of movements of the wearer.

TEST METHODS Resistance to Rupture Revision A test specimen, held between annular fasteners, is subjected to the increasing force applied by a polished stainless steel ball of 0.625 inches in diameter. The resistance to rupture is that force that causes the sample to fail. The resistance to rupture can be measured on wet or dry samples.

Apparatus Rupture Tester Tension test instrument Intelect-ll-STD, or. 1451-24PGB or the Thwing-Albert rupture tester are both suitable. Both instruments are available from Thwing-Albert Instrument Co., Philadelphia, PA. The instruments must be equipped with a 2000 gram load cell. If wet breakage measurements are to be made, the instruments must be equipped with a load cell protection and water protection for the front panel.

Room Condition The temperature and humidity must be controlled to remain within the following limits: Temperature: 73 + 3 ° F (23 ° C + 2 ° C) Humidity: Relative Humidity of 50 + 2% Paper Cutter Scissors or other equivalent Tray can be used To soak the samples for the wet break suitable for the sample size Solution Water to soak the samples for the wet break that must be cut at the temperature of the conditioned room Appropriate Stopwatch for soaking time measurement Sample preparation 1) Cut the sample to an appropriate size for the test (minimum sample size 4.5 inches x 4.5 inches). If the sample to be tested is too small (for example, a flexible extension with overall dimensions less than 4.5 inches x 4.5 inches), a larger sample of the same material should be used to determine the wet breaking strength. minimum of five samples for each condition to be tested 2) If measurements of the wet break are to be made, place an appropriate number of cut samples inside a tray filled with water at a balanced temperature.

Equipment layout 1) Arrange the break tester according to the manufacturer's instructions. If a ll-STD tension test instrument is to be used, the following is appropriate: Speed: 12.7 centimeters per minute Breakage sensitivity: 20 grams Peak load: 2000 grams 2) Calibrate the load cell according to the breaking strength expected Measurements and report 1) Operate the rupture tester according to the manufacturer's instructions to obtain a measurement of the breaking strength for each sample. 2) Record the breaking strength for each sample and calculate an average and a standard deviation for the breaking strength for each condition. 3) Report the average and standard deviation for each condition in the next gram. Report the average and standard deviation for each group of four samples.

Dry Calibration Principle The dry caliber of a sample can be determined using a comparator gauge that is tared to provide a predetermined confining pressure. Apparatus A suitable comparator meter, the meter is the Ames, Model 130 with a disc indicator Model 482, available from B.C. Ames, Companyd e Waltham, MA.

The comparator meter must have a circular footprint or comparison area made of aluminum capable of exerting a load pressure of (1.7 kPa). It will be recognized that the diameter of the comparator area can be varied to fit the different sample sizes as long as the loading pressure remains constant. Operation 1. The comparator meter is zeroed according to the manufacturer's instructions. 2. The comparator seat is raised and the sample is placed on the base plate. The sample is placed on the base plate in such a way that when the seat is lowered it is in the center of the sample. The seat of! Comparator should be at least 5 mm from all edges of the sample. Try to smooth or avoid any wrinkles in the sample. 3. Gently lower the seat on the sample. 4. Determine the gauge by reading the dial of the comparator 30 seconds after the seat comes in contact with the sample. 5. Repeat steps 2 to 4 for two additional samples.

Calculation The average of the three readings is the caliber of the material.

Caliber in Moist Principle The thickness or caliber of a product can be determined using a micrometer operated with motor, which measures the perpendicular distance between the two main surfaces of the product under the prescribed conditions. Using this type, measurements are made and reported to the nearest 0.1 mm.

Apparatus Blotting paper or absorbent towel, clean, dry Environmental conditions Controlled temperature and humidity within the following limits: Temperature: 73 + 2 ° F Relative humidity: 50 + 2% Flat tray for immersing the sample Tray that is larger than the sample more long by at least 100%. Stopwatch Digital Stopwatch Micrometer A suitable micrometer is the Model 89-11 electronic thickness tester that is available from Thwing-Albert Instrument Co., Philadelphia, PA. The sample load should be 0.25 pounds per square inch (1.7 kPa). Scissors Next, office scissors, with cut length of 7 inches equivalent Solution Aqueous saline solution (0.9%) at a temperature of the conditioned room used.

General Practices The following general practices should be followed. 1. Fix and calibrate the micrometer as described in the manufacturer's instructions. 2. Do not use parts of the sample cut with a die if more samples are available. Some compression of the paper takes place during the cutting of the sample in a die which can cause the results to be low. 3. Do not read the micrometer on the folds that result from the folds. 4. Do not make micrometer readings on paper with obvious defects such as wrinkles, holes, tears, etc. If the selected portions of the sample have such defects, making them unsuitable for testing, discard them. Replace with another portion of sample that is free of these defects selected the portion of sample replacement of the same layer or area of the sample. In general, select parts for the test not designated for other tests. 5. Avoid handling the surface area of the sample portions to a minimum. Touch only the edges when possible. 6. Do not test the same area of a sample portion more than once; the pressure of the anvil can cause changes in the caliber. ^ fe 7. Do not allow the instrument cycle to force you to read at a step too fast for proper tension of the correct procedure. 8. When completing the test, always turn off the micrometer with the pressure seat down in contact with the anvil. 15 Sample preparation A. Obtain at least three samples and take the micrometer reading in the center of each sample. Sample Conditioning 20 Not Required Pre-Measurement Technique Turn on the micrometer motor then adjust the micrometer value to zero according to the manufacturer's instructions before analyzing each sample portion or series of the sample portions.

Immediately before the measurement, lower the sample in a shallow tray of the saline solution so that the sample can be completely submerged. Immediately after completing the wet, turn on or throw out Walk the micrometer and allow the sample to remain submerged for 10 minutes. Remove the sample from the saline solution using both hands and holding the two adjacent sides along the longitudinal line. (The sample hangs vertically in the transverse direction). Quickly allow the sample to drain while remaining almost in this vertical plane but touching the bottom edge of a surface 1Q absorbent dry, (for example, paper towels BOUNTY). Drain for 30 minutes and F ^ start the dimensions as described below. Operation Turn on the micrometer motor, then zero the micrometer as described in the manufacturer's instructions, analyzing each sample portion or 15 series of the sample portions. When the seat is in the upper position, place the portion of the sample on the anvil of the micrometer. The sample portion must be located carefully on the anvil in such a way that when the seat is lowered, it will be at least 1.27 cm from the edges of the sample portion. Read the meter from 0 panel of the micrometer to the nearest 0.1 mm when the seat is in the down position near the end of the residence time. Report the micrometer reading to the nearest 0.1 mm. Continue in this manner for each sample portion. Observe the value of zero. In the event that the panel meter momentarily reads 0.1 mm or farther than zero, for the test. Clean the surface areas 5 of the seat and the anvil and reset the micrometer.

When completing the test, if the Thwing-Albert instrument was used, switch the instrument to the "STAND-BY" position, with the seat facing down all the way against the anvil before turning off the main power switch.

Calculation Calculate the average and standard deviation of the micrometer readings for each sample and report the caliber average for each sample to the nearest 0.1 mm. 1Q Absorbent Capacity The absorbent capacity can be determined as follows: the article is weighed to the nearest 0.1 grams. The article is then immersed in a beaker of sterile 0.9% saline (obtainable from Baxter Travenol Company of Deerfiled, IL), such that the article is completely submerged and is not flexed or otherwise twisted or bent. The article is submerged for 10 minutes. The article is removed to the ^^ saline solution and suspended for two minutes in a vertical position to allow the saline solution to drain from the article. The article is placed on the surface that faces the body down on an absorbent blotter paper, such as filter paper # 631 or available from Filtration Science Corp., Eaton-Dikeman Division of Mount Holly Springs, PA. A uniform load of 17.6 grams per square centimeter is placed on the article to release the excess fluid. The absorbent blotting paper is replaced every 30 seconds until the amount of fluid transferred to the blotting paper is less than 0.5 grams in a period of 30 seconds. Next, the article is weighed to 0.1 5 grams next and the dry weight of the article is subtracted. The difference in grams is the absorbent capacity of the article.

Compression stiffness Tension / compression device. This test requires a constant speed of tension and compression. Tester The test apparatus such as the INSTRON model 4502 tension and compression test machine, which is available from Instron Corporation of Canton, MA. Load Cell The 10 Newton compression load cell suitable for use with the tension / compression tester. T-Rod The T-Rod comprises a pair of 6.40 mm diameter metal rods mounted perpendicularly together in a T-configuration. The drive rod (the longest of the rods) is approximately 125 mm in length and the rod push (the shortest of the rods), is approximately 75 mm long. Preferably, the end of the drive rod is used to fit the circumference of the push rod and the two are glued, welded and / or screwed together. The opposite end of the drive rod is mounted to the slide unit of the tension / compression tester.

Sample Bra Adjustable bra that has opposite vertical surfaces and a horizontal top surface. Procedure 1. Fix the tension / compression tester according to the manufacturer's instructions. 2. Hold the sample in such a way that a part of the .0 cm long sample (portion to be compressed) extends vertically above the horizontal surface of the fastener. 3. Center the T-bar on the sample with the push rod perpendicular to the larger Q side of the sample surface that is parallel to the horizontal surface of the fastener. 4. Lower the T-bar until a force of 4.5 + 0.5 grams is exerted on the sample. 5. Compress the product surface by 5.0 mm at a crosshead speed of 2 5 inches per minute (51 mm / minute). 6. Record the peak force. 7. Repeat for at least 10 samples.

Calculations and report 0 Calculate and report the mean and standard deviation of the peak force for each evaluated force.

Water Dispersion Capacity 5 Magnetic Stirrer, Thermolyne Type S7225 or 7200 (no substitutions). Permanently inscribe a 8.9 cm circle on the top surface of the agitator. The center of the circle must be coincident with the geometric center of the agitator, Stirring bar covered with 6.2 cm of TEFLON with spin ring. Permanently mark one end of the bar with black ink for a distance of 1.2 cm back from the tip. Thermometer 30 to 120 ° F with divisions of one degree. Stopwatch Digital Stopwatch Stroboscope Stroboscope of variable speed, model 964 available from Strobette, Power Instrument, Inc from Skokie, IL is adequate. Weighted glass Of 2000 ml of the Kimax brand with peak (no substitution), inscribe a filling mark at a height of 14.3 cm from the flat bottom of the beaker. Do not use any pointed glass that does not have a flat bottom. Equipment layout 1. Fill the weeping glass to the filling mark with common water at 73 + 3 ° F. 2. Place the beaker on the magnetic stirrer centering it on the inscribed circle. 3. Add the stirring rod to the beaker. 4. Turn on the stroboscope and set the speed to 1000 revolutions per minute according to the manufacturer's directions. 5. Turn on the magnetic stirrer with the on / off switch. Adjust the speed of the magnetic stirrer until the stir bar appears to be fixed and both ends appear to be black. This indicates that the magnetic stirrer is rotating at 500 revolutions per minute (that is, the half set in the strobe). Turn off the magnetic stirrer with the on / off switch.

Procedure 1. Keep a sample of 7.6 to 10.2 cm above the surface of the water. Gently drip the sample over the water surface, turning on the timer when the sample touches the surface of the water. 2. Wait 5 seconds. 10 3. Turn on the magnetic stirrer with the on / off switch. ^^ 4. Record the time required until the sample separates into at least two pieces. 5. Repeat steps 1 to 4 with three additional samples.

Calculation and report Calculate and report the mean and standard deviation of the time of the • water dispersion capacity for the 4 samples tested. The disclosure of all patents, patent applications (and any patents issued thereon, as well as any of the corresponding published foreign patent applications) and the publications mentioned throughout this description are hereby incorporated by reference here. However, it is not expressly admitted that any of the documents incorporated by reference herein teach or disclose the present invention. Although particular embodiments of the present invention have been illustrated and described, it would be obvious to those skilled in the art that various other changes and modifications may be made without departing from the spirit and scope of the invention.

Claims (10)

1. - An interlabial absorbent structure for use within an interlabial space, said interlabial space having opposite walls, said interlabial absorbent structure having a longitudinal centerline, a surface that is in contact with the body, and an opposite posterior surface and comprising: pair of absorbent panels, each panel having a proximal edge, a distant edge, and a pair of opposite end edges, wherein each of said 10 panels have sufficient flexibility that this at least partially forms a surface of said wall and is able to maintain contact with the surface when ^ uses the interlabial absorbent structure; and an isthmus joining said proximal edges of said panels with the isthmus placed farther inward, within the interlabial space when the interlabial absorbent structure is used.

2. The nterlabial absorbent structure according to claim 1, wherein said interlabial absorbent structure is dispersed in at least two fragments after two hours of exposure in water, gently agitated.

3. The interlabial absorbent structure according to claim 1, wherein each of said panels comprises a plurality of layers of tissue, said plurality of tissue layers being joined on the distal edge of said panel.

4. The interlabial absorbent structure according to claim 3, wherein the tissue comprises a temporary wet strength additive.

5. - The fabric absorbent structure according to claim 3, wherein the tissue has a wet breaking strength of between about 15 grams and about 200 grams.

6. The nterlabial absorbent structure according to claim 1, wherein the isthmus comprises a densified portion of the materials comprising the panels.

The web absorbent structure according to claim 1, wherein the isthmus further comprises a fibrous portion, said fibrous portion comprising an extension of the materials comprising the panels and an elastic member, said elastic member comprising a portion of the rear surface and being arranged along the longitudinal center line.

8. The interlabial absorbent structure according to claim 1, wherein said isthmium comprises an extension of the materials comprising the panels beyond the proximal edges, said panels being joined at the proximal edges by a plurality of discrete securing means.

9. The interlabial absorbent structure according to claim 1, wherein the interlabial absorbent structure further comprises extraction means attached to the posterior surface of said isthmus.

10. The interlabial absorbent structure according to claim 3, wherein each of said panels further comprises a top sheet disposed on the body surface thereof and a back sheet disposed on the rear surface thereof, said top sheet and said back sheet being joined along the end edges and the distant edges.