The present invention is related to disposable absorbent articles and more particularly to sanitary personal-care articles for women.
Conventional sanitary pad and tampon designs are configured to collect and retain menstrual material and to protect clothing from the material. The conventional designs, however, have drawbacks that can lead to leakage of menstrual material onto the wearer's undergarments or other clothing. A conventional sanitary pad or tampon is considered to have failed if menstrual material is not caught by the intended absorption device when used in accordance with the manufacturer's directions. Often these design failures become more pronounced when there is a rapid or large expulsion of fluid and/or more viscous or solid material, collectively referred to as menstrual material.
Sanitary pads are designed to sit in a wearer's clothing and absorb the flow of menstrual material onto the absorbent material as it is expelled from the woman's body. Conventional sanitary pads, however, often do not stay in place and can move around in the clothing and relative to the woman's pudendum during use. This movement causes the risk of possible leakages onto the wearer's clothing if the pad is not correctly positioned to catch the menstrual material. If there is a rapid or large expulsion of menstrual material, as often happens, the pad material often cannot absorb all the menstrual material fast enough, thereby causing the pad design to fail. To compensate for these design shortcomings, manufacturers typically make pads much larger with more absorbent material needed to hold the amount of menstrual material collected before being discarded. In other words, only the center of the pad will actually be used before it is discarded, leaving the pad's ends and sides unutilized.
Larger pad sizes also cause a further problem regarding reduced comfort in wear. Typically, the larger the pad, the more uncomfortable it is to wear. Larger pads are often more visible within clothing, which is also typically not desired. The larger pads also often deform into an inverted U or V shape when worn. The wider the pad, the greater chance that the pad will deform into an inverted U or V shape. This inverted shape is not conducive for the catching of liquids; quite the opposite. The deformation turns the pad's shape into that of a roof-shape that allows menstrual material to travel down the pad before it can be absorbed, thereby contributing to pad failure.
Conventional tampons also have design problems. Menstrual material can often bypass a tampon within the vaginal canal for a variety of reasons, even when used per manufacturer instructions. Even simple body movements, when menstrual material is being expelled, can cause tampon failure. Another problem with conventional tampons is the fact that the user cannot accurately tell when the tampon is sufficiently filled and ready to be removed. If the tampon is removed too soon, the tampon will be partially dry, and dry fibers that make up the tampon can be left inside the vaginal canal. The tampon fibers left behind can cause undesirable dryness within the vaginal canal. It is also undesirable to leave these fibers in the vaginal canal for a number of health reasons. If, on the other hand, the tampon is allowed to completely fill, which is preferred for removal, the tampon may fail because it cannot absorb any more menstrual material. As a result, the excess menstrual material can bypass the tampon, resulting in failure of the device. Accordingly, there is a need for an improved disposable personal-care article useable to collect and absorb menstrual material and other bodily fluid.
The present invention is directed to a disposable sanitary article that overcomes drawbacks experienced in the prior art and provides other benefits. One embodiment of the invention provides a disposable sanitary article for use by a woman. The sanitary article comprises a pad portion having a fluid-permeable surface portion and an absorbent material adjacent to the surface portion. The pad portion is configured to be positioned exterior of the woman's pudendum and to absorb a bodily material from the pudendum. The absorbent material has a top portion configured to face the pudendum and a bottom portion opposite the top portion. A rigid reservoir member is coupled to the absorbent material so the rigid reservoir member will be intermediate the absorbent material and the pudendum. The rigid reservoir member defines a reservoir with a fixed reservoir shape adjacent to the top portion of the absorbent material during use by the woman. The reservoir member is shaped and sized to fit on and press against a portion of the pudendum and to maintain its fixed reservoir shape during use by the woman to receive and contain the bodily material therein until the bodily material can be substantially absorbed by the absorbent material. The reservoir member is configured to provide structural rigidity to the absorbent material adjacent to the reservoir member to hold the reservoir open and to prevent the absorbent material from collapsing, bending, or substantially deforming relative to the pudendum during use by the woman.
Another embodiment of the invention provides a disposable sanitary article for collecting bodily material. The sanitary article comprises a pad member having a fluid-permeable surface portion and an absorbent material adjacent to the surface portion and configured to absorb bodily material passing through the surface portion. A rigid reservoir member is attached to the surface portion of the pad member and projects away from the surface portion. The reservoir member defines a reservoir adjacent to the surface portion and configured to contain the bodily material therein until the bodily material can be substantially absorbed by the absorbent material. The reservoir member provides structural rigidity to the absorbent material adjacent to the reservoir to hold the reservoir in a fixed open condition and to substantially prevent the absorbent material adjacent to the reservoir from collapsing, bending, or substantially deforming.
Another embodiment of the invention provides a disposable sanitary article for use with a woman's body in the area of the pudendum. The sanitary article comprises an absorbent pad having a fluid absorbent material therein. The pad portion is configured to be positioned exterior of the pudendum and to absorb menstrual material from the pudendum. The pad has a substantially rigid reservoir portion positioned about a reservoir adjacent to the absorbent material. The reservoir is shaped and sized to fit on an external portion of the pudendum in alignment with the vaginal opening therein and to receive the menstrual material from the pudendum until the menstrual material can be substantially absorbed by the absorbent material. The reservoir member provides structural rigidity to the absorbent material adjacent to the reservoir to hold the reservoir in a fixed open condition and to substantially prevent the absorbent material adjacent to the reservoir from collapsing, bending, or substantially deforming. The sanitary article further comprises a tampon having a body portion and a flexible engagement member. The pad is connected to the engagement member and is movable along the engagement member relative to the tampon.
The foregoing and other aspects of the invention will now be described in more detail with reference to the accompanying drawings. This Summary section is provided to introduce in a simplified manner aspects and features further described below in the Detailed Description section and illustrated in the figures. This Summary section is not intended to limit the scope of the claimed subject matter.
Embodiments of the present invention include disposable sanitary personal-care articles, including sanitary articles for use with a woman's body in the area of the pudendum to receive and contain bodily fluid, including menstrual material. Several specific details of the invention are set forth in the following detailed description and in
As discussed above, sanitary pads in the prior art have experienced the problem of menstrual material flowing off the side of the pad. The present inventor recognized that the prior art, in its attempt to provide a comfortable product, created a flexible pad that is highly susceptible to deformation, bending, or folding in a convex shape relative to the wearer's pudendum. As a result, the expelled menstrual material will flow over the pad and leak past the edges of the pad before the pad can absorb the menstrual material.
Some prior art devices have attempted to incorporate flexible barrier walls to form a large or even small enclosure to receive the menstrual material depending on the design. The present inventor discovered that this version of the prior art still experienced failures notwithstanding the flexible barrier walls because the flexible pad will still invert and fold. This inversion of the flexible pad when the pad is being worn severely limits or obviates the effectiveness of any enclosure because the walls when folded tip downward on the sides of the pad, so the menstrual materials will flow over the sides. The present inventor further recognized that if the pad and the barrier walls that form an enclosure are flexible, then the “space” within the enclosure is not protected. Accordingly, when the sanitary pad folds, bend, or otherwise creases, the absorbent material on the inside of the enclosure will protrude into the “space,” thereby reducing or eliminating the intended space inside the enclosure, so the “space” effectively ceases to exist because the pad is folded and each side is tipped downwardly.
The disposable sanitary personal care articles of embodiments of the present invention include the sanitary pad device having an absorption material and a reservoir positionable against an external portion of a female wearer's pudendum area. The reservoir is configured to receive, control, and contain menstrual material or other bodily material expelled from the pudendum adjacent to the absorbent pad until the material can be absorbed by the pad. The reservoir can be formed by a substantially rigid reservoir member attached to a pad containing one or more absorption materials.
The reservoir member is shaped, sized, and configured to support the pad so the pad under the reservoir is held open and does not excessively bend, fold, crease, or deform during use. As a result of the substantially rigid reservoir member providing the structural support to the pad to maintain the integrity of the pad's portion below the reservoir, the absorbent pad can be substantially smaller than conventional pads and extend radially past the periphery of the rigid reservoir member while maintaining exceptional control and absorption of the flow of menstrual material when in use. In another embodiment, the absorbent pad's periphery is substantially the same size and shape as the periphery of the reservoir member's periphery. The absorption material in the pad can include conventional hydrophilic material capable of absorbing menstrual blood and other bodily fluids and material. Such absorption material can be a fiber material (e.g., cellulose fiber, synthetic fiber, wood pulp, etc.), absorbent gelling material, or other conventional absorption material used in sanitary pad material, tampon material, diaper material, or other material used to absorb bodily fluids.
The reservoir member fits comfortably over and engages an exterior portion of the wearer's pudendum (i.e., the vulva, including the labia majora and minora, and the vaginal opening) to collect and hold the discharged fluids until the absorption material can absorb them. In at least one embodiment, the reservoir member fits with a gasket-like engagement against a portion of the labia majora and in alignment with vaginal opening. In one embodiment, the reservoir member is shaped and sized so a posterior end is positioned generally between the vaginal opening and the anus. The anterior area of the reservoir member is positioned on the labia majora below an area generally between the vaginal opening and the clitoris. In one embodiment, the substantially rigid reservoir member is approximately 1.5-inches long and approximately 1-inch wide. In other embodiments, however, the reservoir member can be larger or smaller to fit over more or less of the pudendum while maintaining alignment with the vaginal opening. In other embodiments, the reservoir member can have a uniform height, or it can have different heights along portions of the reservoir member to generally correspond to the external shape or contours of the pudendum.
The reservoir member can be made of material including, but not limited to, plastic, metal, wire, cardboard, cotton, rubber, or other sufficiently stiff material that will substantially maintain the shape of the reservoir while the sanitary pad device is in use. The reservoir member can be liquid-proof, or can be covered with a liquid-proof covering or coating. The reservoir member may be padded. There may also be multiple reservoir members working in conjunction with one another to provide one or more reservoirs that will collect and hold menstrual material or other bodily material until they are absorbed by the absorption material while maintaining the structural stability of the pad and the integrity of the reservoir. In one embodiment, the reservoir is retained in a fixed open position by a brace, such as one or more cross brace members, spanning across the reservoir against or immediately adjacent to the pad. The brace provides structural rigidity to the sanitary pad device to help the pad maintain its shape adjacent to the reservoir.
One embodiment of the rigid reservoir member of the sanitary pad device has a teardrop shape that defines a rigid teardrop reservoir that sits above absorbent material. The reservoir member is designed to fit comfortably within the confines of the area of the woman's body in which it sits, namely in the existing space between the legs, and engagement with the pudendum (as discussed above) and just anterior of the woman's buttocks, such that these confines of the woman's body keep the reservoir and pad properly placed.
The teardrop-shaped reservoir member has a narrow posterior end, and the sides of the reservoir member diverge from the narrow end of the teardrop to the wider anterior end. This shape follows the natural V shape of the vaginal/pudenda area, from the narrow area located between the legs, just rearward of the vaginal opening, widening out at the area adjacent to the labia majora and below the lower abdomen. So, the reservoir member acts like a wedge, with the narrow end resting comfortably against the beginning of the buttocks, and the sides widening out, confined by the inner thighs. The buttocks are used as the stop that ensures the reservoir member (and thus, the pad) cannot move backward and out of alignment with the vaginal opening. The reservoir member is shaped so the inner thighs ensure that the reservoir member cannot move side to side, and the wearer's underwear or other garment ensures that the pad and reservoir member cannot slip forward out of alignment with the vaginal opening. Thus, the reservoir member is “boxed” in by the buttocks at the posterior end, the legs for the sides, the vaginal area being the top, and the underwear acting as the anterior end and bottom. Accordingly, the reservoir member is “boxed-in”, so it stays positioned under the vaginal opening to accept menstrual material when the sanitary pad is in use. This “boxed-in” effect is maintained at least in part because the sanitary pad device is correctly sized and shaped. In addition, the reservoir always remains open under the vaginal opening because the reservoir member is substantially rigid, such that the pad and reservoir will not collapse, fold, or otherwise deform so as to compromise the integrity of the reservoir. Also, it is important to note that the entire area of the reservoir remains open on or immediately adjacent to the vaginal opening and the reservoir remains in its position.
The inventor recognized that the wearer's legs may move relative to the side of the reservoir, and the buttocks may have some movement relative to the reservoir at the very beginning of the crease, but the area of the pudendum on which the reservoir member sits has substantially no movement, even when the rest of the body is in motion. Accordingly, the inventor recognized that a properly sized and shaped rigid reservoir member can be used to fit so well into the area and keep such good contact with the pudendal region, that it stays positioned correctly while maintaining comfort for the wearer.
The reservoir member, along with being properly sized and shaped, is substantially rigid so it stays open during use to protect the “space” inside the reservoir from being compromised. The rigid reservoir member will not bend or fold along the horizontal plane during normal use. So, when the rigid reservoir member is properly adhered to the top of the absorbent material, the absorbent material under the reservoir will not bend, fold, or substantially deform, so the “space” inside the reservoir will always be maintained independent of normal body motion by the wearer.
If the reservoir member were not sufficiently rigid, the reservoir member and pad could bend or fold, for example, along a longitudinal crease line, causing the absorbent material below the reservoir to be thrust upward into the reservoir, thereby compromising the integrity of the reservoir. The inventor recognized that this action could cause at least a couple of problems. First, if the reservoir was folded at the narrow posterior end and the absorbent material was pushed up into the reservoir near that posterior end, the relative height of the wall defining the reservoir at that area would be much shorter and less capable of containing a normal to heavy flow of menstrual material. Accordingly, this section of the reservoir would provide an easy spot for the menstrual material to flow over that section of the wall. Second, if the reservoir were to crease down the longitudinal crease line and the reservoir walls were now on both sides of the crease, the reservoir would effectively cease to exist. This would mean that the reservoir walls would now simply act like barrier walls for slowing menstrual materials from spilling off the sides of the pad.
The inventor also recognized that the properly sized, shaped, and positioned rigid reservoir acts as a conduit of menstrual material, providing total control of the material from the time it is expelled from the vaginal opening to the time it is fully absorbed by the absorbent material. Since the reservoir, which fully maintains its integrity during normal movement by the wearer, is gently pressed against the soft folds of the wearer's skin, and it is adhered to the absorbent material, the reservoir acts like a “pipe” (although it be a very short pipe) between the two, controlling the flow of materials until they can be fully absorbed.
As long as the “conduit,” or rigid reservoir member, stays positioned properly and the “space” inside the reservoir and the integrity of the absorbent material below the reservoir are maintained, portions of the absorbent material outside the reservoir can deform and conform to each individual wearer's body, thereby increasing comfort with no loss to performance. Since it is the reservoir that controls the flow of menstrual material from the vaginal opening to the absorbent material inside the reservoir, the absorbent body can be made extremely narrow in the crotch region; it just needs to be as wide as the reservoir member. This means that sanitary pads suitable to control up to an extra heavy menstrual flow can be small and narrow, while providing a more comfortable pad.
Menstrual material consists of solids, semisolids, and liquid. The solid and semisolid menstrual material often just rests on top of a pad until it dries, causing an unpleasant wet feeling for the wearer. The space between the wearer's pudendum and the top of the absorbent material, provided by the walls of the rigid reservoir, keeps the solid and semisolid material away from the user's skin, providing a drier feeling than otherwise possible.
The pad 12 is shaped to fit comfortably between the wearer's legs against the wearer's pudendum and adjacent to the wearer's buttocks. In the illustrated embodiment, the pad has a generally rectangular anterior portion 20, and a posterior portion 22 tapers rearwardly to a narrowed posterior end. The pad is shaped and sized so the anterior portion is positioned generally against a portion of the labia majora below the area generally between the urethra and the mons veneris, and preferably just rearward of the clitoris. The pad is shaped and sized so the narrowed posterior end will be positioned approximately at or against the beginning of the wearer's buttocks. The narrow end is configured to gently engage the area near the beginning of the buttocks, so that the pad will not slip rearwardly in use. Instead the beginning of the wearer's buttocks will help position the pad and the reservoir member in proper position relative to the vaginal opening. Because the narrowed end starts near the beginning of the user buttocks and does not extend farther back, the pad remains closely contoured to the wearer's body. Accordingly, the pad is substantially undetectable when looking at the wearer. Also, since the pad is so narrow, small and contoured to the wearer's body, the pad sits very comfortably between the wearer's legs without the pad moving around and bunching up within the wearer's underwear or other undergarments.
As best seen in
The sanitary pad device 10 has a substantially rigid reservoir member 30 that defines a reservoir 16 adjacent to an upper surface 18 of the pad 12 and adjacent to the absorption material 19. In the illustrated embodiment, the reservoir member 30 is a ring attached to the top of the pad to form a raised structure with sidewalls 32 that define the sides of the reservoir 16. The reservoir member is shaped to be generally teardrop-shaped with the posterior end 33 being narrower than the anterior end 35 (
The reservoir member 30 of the illustrated embodiment is positioned on top of, and attached to, the absorption material 19 or to a fluid-permeable liner 19a covering the absorption material. The reservoir member is configured to be placed over the pudendum so the reservoir will receive, collect, and hold the menstrual material until the material can be absorbed by the absorption material. The reservoir member will hold the menstrual material within the reservoir 16 and provide the absorption material as much time as needed to fully absorb the discharge. Because the sanitary pad device 10 is positioned around an exterior portion of the pudendum, the reservoir is generally aligned with the vaginal canal, so all the discharged material will be caught in the reservoir until absorbed. The rigid reservoir member maintains the shape and integrity of the reservoir and the absorbent material below the reservoir, so there is very little possibility of device failure.
In the illustrated embodiment, the peripheral edge portion 14 of the pad 12 has an outer wall portion 34 projecting away from the pad's upper surface 18. In the event that the sanitary pad device 10 is dislodged relative to the wearer's body and some menstrual material engages the pad outside the reservoir 16, the outer wall portion will help contain the menstrual material on the pad until absorbed by the absorption material, rather than leaking off the pad and onto the wearer's clothing. The outer wall portion 34 of the illustrated embodiment is integrally formed in the peripheral edge portion of the pad. Other embodiments can have an outer wall portion formed by a raised member adhered or otherwise attached around the pad.
In another embodiment, the rigid reservoir member 30 can be an integral portion of the inner sidewall 41 around the reservoir 16 and configured to receive and closely fit to the external portion of the pudendum as discussed above. In the illustrated embodiment, the rigid reservoir member can have a slight outward curve that provides a small amount of lateral flex radially inwardly when pushed from the sides. The flexibility of the reservoir member selected during manufacturing can be based upon the material used, the thickness of the material used, and the reservoir member's structural design. The reservoir member, however, does not flex or collapse under normal pressure applied vertically. Accordingly, the rigid reservoir member helps the entire sanitary pad device 10 maintain its shape, so the pad will not bunch up, collapse, or fold when it is being worn.
The reservoir member 30 may be made of a material or combination of materials substantially impervious to fluids, such as plastics, metals, wire, rubber, or other suitable materials. In another embodiment, the rigid reservoir member can be made of one or more materials, such as compressed cotton, cardboard, or other suitable material, that may absorb some fluids retained in the reservoir 16 without losing the rigidity and structural integrity of the reservoir member. In another embodiment, the reservoir member is made of an absorbent material having a fluid-impervious coating thereon that prevents or slows down absorption of the fluid by the reservoir member. In the illustrated embodiment, the reservoir member has a body portion 42 securely connected to the pad's upper surface 18 to provide structural stability to the pad so the reservoir 16 will not collapse under normal use. The body portion can be adhered to the upper surfaces as to provide the structural rigidity, with some flexibility as discussed above. In other embodiments, the body portion can be partially embedded into the pad. In another embodiment, the body portion can be integrally formed in the pad.
The reservoir member 30 of the illustrated embodiment has soft padding 44 attached to the top of the body portion 42. The soft padding is configured to engage the wearer's pudendum to provide a comfortable fit against the wearer's body. The soft padding of the illustrated embodiment is covered with a liquid-proof covering or coating 46. The soft padding can be adhered directly to the body portion by glue, tape, or other connection method. The soft padding is configured to form an inner lip 48 on the inside of the reservoir member. In another embodiment, the inner lip can be integrally formed on the body portion 42. The inner lip allows menstrual material to flow down into the reservoir 16 and into the pad for absorption, and the inner lip also helps prevent backflow of the menstrual material out of the reservoir, such as when the wearer is lying down and the device is tipped away from a generally horizontal orientation.
In one embodiment, the reservoir member 30 is formed and assembled with the padding 44 separately, then attached to the pad 12 via glue, tape, or other common method of adhesion. The reservoir member can be formed by a single member, or by a plurality of members. The reservoir member as illustrated is a single closed, teardrop-shaped ring. In another embodiment, the reservoir member can have different shapes and can be configured as an open structure that contains and controls the menstrual material before it is absorbed. For example, in one embodiment, the reservoir member is configured to form a reservoir 16 that has a tortuous path along which menstrual material may move until it can be absorbed by the absorption material in the pad portion.
In the illustrated embodiment, the pad 12 includes the sloped intermediate portion 38, and the reservoir member 30 is spaced radially inward from the inner sidewall 41, so there is a small space 50 between the inner sidewall and the reservoir member 30. This space allows the pad's sloped intermediate portion to slightly compress under pressure, while the rigid reservoir member remains in contact with the wearer's body.
In the illustrated embodiment, the pad 12 has a trough 52 formed in the peripheral edge portion 14 radially outward from the reservoir member. The trough of the illustrated embodiment is a recessed trough formed in the pad. Accordingly, the trough does not add to the thickness of the pad. The trough provides an extra protection to help prevent any stray menstrual material not captured in the reservoir 16 from flowing over the side of the pad.
In another embodiment, the peripheral edge portion 14 of the pad 12 has a short, raised wall projecting up from the pad's upper surface and forming a barrier to block any stray menstrual fluid not captured in the reservoir 16 from flowing over the edge of the pad. In another embodiment, the short, raised wall can be provided adjacent to the trough 52 in the pad as discussed above. The short, raised wall can be an integral portion of the pad, or the wall can be a structure adhered to the pad portion. The short, raised wall around the peripheral edge portion 14 can be configured to add some structural stability to the pad to help the pad maintain its shape when worn.
In another embodiment, the sanitary pad device 100 is used in conjunction with a tampon 102. The sanitary pad device has substantially the same construction as described above, except as discussed below.
The tampon 102 has an absorbent body portion 104 connected to a string 106. The string is connected to the sanitary pad device 100. In one embodiment, the string extends into the reservoir 109 and through the pad 107, so the pad can be slid closer or farther away from the tampon as desired or needed by the wearer. The string has a knot 110 or other retention device that prevents the string from pulling out of the pad portion. In another embodiment, a retainer device 108 is connected to the pad portion and to the string, so the string and tampon will remain connected to the sanitary pad device. The retention device of one embodiment is a brace spanning across the reservoir against or immediately adjacent to the pad. The brace can provide some structural rigidity to the sanitary pad device to help the pad maintain its shape. The retention device can also be moveably connected to the tampon's string. Accordingly, the sanitary pad device can slide along the string to adjust the distance between the tampon's body portion and the pad.
The tampon 102 is configured to be inserted into the vagina to absorb and collect menstrual material in a conventional way. The sanitary pad device 100 is configured to be positioned against the exterior portion of the wearer's pudendum, as discussed above. The reservoir 109 in the sanitary pad device will catch any menstrual material that may bypass the tampon. This allows the user to let the tampon fill completely, and the user can check to see whether the tampon is in fact full by looking at the pad rather than by removing the tampon. This also avoids premature removal of tampons, which could leave the dry tampon fibers in the vagina and cause vaginal dryness.
In use, the tampon 102 is inserted into the vagina, dispensed via an applicator 112 (discussed in greater detail below), and then the sanitary pad device 100 is slid up the tampon's string until the reservoir member 101 engages the pudendum. The string will hold the sanitary pad device in position snugly against the pudendum with the reservoir 109 below the vaginal opening. Since the sanitary pad device will be snugly held in place at least in part by the tampon and its string, the size of the pad in the sanitary pad device can be minimized. In one example, the shape of the pad portion is approximately the same shape as the reservoir member. Thus, the device is extremely small, comfortable, efficient, and virtually invisible within the wearer's clothing. The sanitary pad device 100 can have an adhesive on the bottom of the pad 107 to releasably attach to the wearer's clothing. Other embodiments do not need the adhesive material to comfortably retain the pad in place against the wearer's pudendum because the sanitary pad device works with the tampon to hold the sanitary pad device in place against the wearer.
In another embodiment shown in
Referring back to
In the illustrated embodiment, the portion of the top layer 210 defining the aperture 212 can be configured to form a lip 213 around the top of the reservoir 206 to help prevent backflow of the menstrual material from the reservoir, as discussed above. Accordingly, the top layer will not interfere with the menstrual material flowing into the reservoir. The top layer is also configured to catch and absorb any menstrual fluid that may miss the reservoir. The absorbent top layer of the illustrated embodiment is made of the same material used for the base pad portion. The top layer can be made of other materials in other embodiments.
In another embodiment, the recess 220 in the base pad portion 202 can be configured with or without a step and so that the rigid reservoir member 204 is received therein. The top edge of the reservoir member can be substantially flush with the top surface of the base pad portion 202. The reservoir member and the reservoir 206 defined thereby work in the same manner as discussed above to receive and contain the menstrual material until it can be absorbed by the absorbent material. The rigid reservoir member also provides structural stability to the base pad portion to help keep it from collapsing or folding during use as discussed above.
The sanitary pad device 230 of the illustrated embodiment has an absorbent base pad portion 234 attached to the base sheet 232. A reservoir member 236 defining the reservoir 238 is coupled to the base pad. The reservoir member and reservoir are adjacent to the base pad and configured so the reservoir will receive and contain the menstrual material therein until it can be absorbed by the absorbent material 240 in the base pad, substantially as discussed above. The absorbent base pad is attached to a generally central portion of the base sheet. The absorbent base pad is substantially smaller than the base sheet while providing all of the absorption capabilities needed to handle virtually any menstrual flow, from light to very heavy. The base sheet is very flexible, such as a thin plastic material, so that the base sheet does not provide discomfort to the wearer. The base pad and reservoir member (with or without the padding discussed above) are small and fit comfortably against the wearer's pudendum.
As best seen in
The shape of the aperture 244 substantially corresponds to the shape of the reservoir 238. The portion of the top sheet 242 defining the aperture can be configured to form a lip 246 over the reservoir to help prevent backflow of the menstrual material from the reservoir. Accordingly, the top sheet will not interfere with the menstrual material flowing into the reservoir. The top sheet, however, is configured to catch and absorb any menstrual fluid that may miss the reservoir.
In one embodiment, the absorbent top sheet 242 of the illustrated embodiment is made of the same material used for the base pad portion 234. The top sheet can be made of other materials in other embodiments. The top sheet, however, is thin and flexible enough to provide no discomfort to the wearer. The sanitary pad device, however, will appear to have substantially the same shape and size as a conventional sanitary pad or panty liner, thereby providing emotional comfort to a wearer who may not want to try new things. The sanitary pad device, however, is substantially more comfortable and more effective than conventional sanitary pad products.
From the foregoing, it will be appreciated that specific embodiments of the invention have been described herein for purposes of illustration, but that various modifications may be made without deviating from the spirit and scope of the invention. Accordingly, the invention is not limited except as by the appended claims.
This application is a continuation-in-part patent application that claims priority to U.S. patent application Ser. No. 11/454,681, entitled DISPOSABLE SANITARY PERSONAL-CARE ARTICLE FOR ABSORBING BODILY MATERIAL, filed Jun. 15, 2006, which is a non-provisional patent application that claims priority to U.S. Provisional Patent Application No. 60/691,209, entitled A RAISED MEMBER FOR THE COLLECTION AND DISTRIBUTION OF MENSTRUAL MATERIAL FOR TAMPONS AND SANITARY PADS, filed Jun. 15, 2005, both of which are incorporated herein in their entirety by reference thereto.
Number | Date | Country | |
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60691209 | Jun 2005 | US |
Number | Date | Country | |
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Parent | 11454681 | Jun 2006 | US |
Child | 11757208 | Jun 2007 | US |