1. Field of the Invention
The invention relates generally to prophylactic devices and, more particularly, to a female condom for insertion into the vagina of a female for protection from pregnancy and disease during sexual intercourse.
2. Description of the Related Art
With the proliferation of sexually transmitted diseases (STDs), including human immunodeficiency virus (HIV), the virus that causes acquired immune-deficiency syndrome (AIDS), and with the uncontrolled growth of the world's population, there is a pressing unmet need for an effective means for preventing the transmission of STDs and for controlling population growth. One method for accomplishing both these goals is by introducing an effective barrier between male and female sex organs during sexual intercourse for preventing the transmission of bodily fluids and for limiting the actual skin-to-skin contact between the sexual organs. Heretofore, conventional means for creating such barriers have included the use of condoms, diaphragms, prophylactic gels, creams, and the like.
Since ancient times, one successful means for creating a barrier to bodily fluids during sex has been the use of male condoms. Male condoms for placement over the penis were originally constructed from animal tissue, and condoms of this type are still in use today. Condoms of animal tissue are generally effective for preventing the passage of semen, but do not prevent the passage of certain microbes, and in particular viruses, such as HIV. Accordingly, most male condoms are now constructed from latex, polyurethane, or other resilient modern polymers that are able to act as a barrier to microbes as well as bodily fluids. While male condoms have become popular for the control of STDs and pregnancy worldwide, there is still much room for improvement. For example, many men do not like to use male condoms because such condoms can deaden sensation, cause erectile dysfunction, inability to ejaculate, or the like. In addition, some men simply refuse to wear condoms.
Because of the shortcomings with male condoms, there have been proposals to provide female prophylactic devices that can be worn by a female prior to sex and disposed of following use, i.e., a female version of a condom. However, at the present, there are few satisfactory female condoms on the market. One reason that the female condoms currently available have not become popular is that they fail to provide adequate protection during sexual intercourse in different positions. For example, the length of the vaginal canal changes depending upon the position of the female partner during intercourse. In particular, in the prone position (e.g., woman on top) the vaginal canal length is shorter because the suspended cervix moves anterior, whereas in the supine position (e.g., woman on bottom) the vaginal canal length is longer because the cervix moves to the posterior position. Since the existing female condoms are not designed to change their length along with the change in length of the vaginal canal during intercourse, they can cause several failures and inconveniences during intercourse.
In addition, when the length of the vaginal canal shortens, such as during a change in sexual position, as illustrated in
Furthermore, other female condoms known in the art (not shown) have an internally located resilient insert element for holding the pouch portion of the female condom in place, or a series of flexible protrusions on the outside of the pouch that are inclined in a direction to prevent pull-out of the pouch. However, these prior art condoms require use of an insertion tool for inserting the anchor elements. The use of an insertion tool is undesirable since it adds to the inconvenience associated with using the condom.
U.S. Pat. Nos. 5,992,415 and 6,035,853, which include several of the same inventors as in the present application, the disclosures of which are incorporated by reference herein in their entirety, show female condoms that use retention sponges. In these patents, a retention sponge is located in a cavity at the end of a pouch portion for retaining the condom in the vagina. However, in some cases, the retention sponge can invert during intercourse, causing the pouch to pullout. In addition, U.S. Pat. No. 6,035,853 has a telescoped body portion that can prematurely unfold causing the pouch to pullout.
Thus, while suitable for their intended purposes, the prior art female condoms have been found to lack an ease of application and quality of operation that is necessary to make female condoms acceptable and convenient to most users. Accordingly, there is a need for an effective female condom that overcomes the shortcomings associated with the prior art female condoms, male condoms, and other conventional prophylactic barrier-type devices.
In a first aspect, the invention is directed to a female condom having a highly elastic resilient pouch portion that is able to freely stretch or extend from an original contracted or compacted configuration into an elongated or stretched configuration, and then return under resilient urging to the original contracted configuration. The pouch may be fashioned with regular circular convolutions that act in a spring-like manner for biasing the condom in a longitudinal direction so that the condom will automatically move back into the contracted configuration. In addition, elastic biasing members or strips may be incorporated into the construction of the condom for providing or augmenting the longitudinal spring-like action of the condom. Thus, the pouch of the condom in one embodiment may be a bunched-up pouch having one or more elastic biasing members attached for retaining the condom in a contracted condition. Alternatively, the pouch may be a smooth pouch made of highly resilient natural latex having high elongation characteristics so that the pouch has sufficient spring bias along the length of the pouch to return the condom to its original configuration and position.
In an additional aspect, the condom of the invention may include a contoured V-shaped or triangular outer frame which also has a spring bias incorporated. Thus, the outer frame may include a curved or dome-like shape which enables the frame to flex so as to better stay in contact with the vulva or external anatomy of the female when the pouch of the condom is located in the vagina. The frame is contoured in a concave fashion on the side that contacts the area of the female anatomy surround the vagina. The V-shaped outer frame is sufficiently resilient to flatten out during penetration by the male to provide more intimate contact during intercourse, and then return to its original curved shape following withdrawal.
In yet another aspect, the condom of the invention includes a retention means located at the closed end of the pouch. The retention means of the invention is preferably a sponge which serves to anchor the closed end of the pouch in the vagina. The sponge may be circular or any other desired shape, and can have a diameter larger than, equal to, or smaller than the pouch portion. Advantageously, the sponge is retained within the pouch in a cavity formed at the end of the pouch by a restricted neck which retains the sponge in the cavity. The sponge can also serve as a resilient spring-like member in addition to or in place of the pouch. Thus, the sponge may be made thick in the longitudinal direction, such as one-half to two inches in thickness, so as to collapse when contacted by the penis, and then rebound upon withdrawal. In addition, the sponge may include an insertion opening for receiving a finger of a user to facilitate insertion of the condom into the vagina. Accordingly, a separate applicator is not required for insertion of the condom of the invention into a vagina. These and other features and advantages of the present invention will become apparent to those of ordinary skill in the art in view of the following detailed description of the preferred embodiments.
The accompanying drawings, in conjunction with the general description given above, and the detailed description of the preferred embodiments given below, serve to illustrate and explain the principles of the preferred embodiments of the best mode of the invention presently contemplated, wherein:
a illustrates a front view of a first embodiment of a condom of the invention;
b illustrates a sectional view of the condom of
c illustrates the condom of
a illustrates an alternative placement of elastic member 124 on the condom of
b illustrates a sectional view of the condom of
In the following detailed description of the invention, reference is made to the accompanying drawings which form a part of the disclosure, and, in which are shown by way of illustration, and not of limitation, specific embodiments by which the invention may be practiced. In the drawings, like numerals describe substantially similar components throughout the several views. The embodiments illustrated are described in sufficient detail to enable those skilled in the art to practice the invention. Other embodiments may be utilized and derived therefrom, such that structural and logical substitutions and changes may be made without departing from the scope of the invention. The following detailed description, therefore, is not to be taken in a limiting sense, and the scope of the invention is defined only by the appended claims, along with the full range of equivalents to which such claims are entitled.
Referring initially to
A pouch 104 is attached to frame 102 by rolling and bonding, molding, heat-sealing, or other known methods. Pouch 104 includes a resilient tubular body portion 106 having an open end 108 and a closed end 110. A plurality of bellows-like regular convolutions or corrugations 112 are formed along the length of pouch 104. These convolutions are preferably circular, and are formed to act in a spring-like manner whereby if pouch 104 is extended in the longitudinal direction (i.e., along the major length of the pouch) by the insertion of a penis, or the like, pouch 104 will return to its original non-extended configuration following withdrawal of the penis due to a spring-like bias in the longitudinal direction that is substantially greater than in any prior art female condoms.
Pouch 104 also includes a sponge cavity 114 for retaining a sponge 116 at closed end 110. Sponge cavity 114 includes a neck 118 that is of a smaller diameter than sponge 116, so that sponge 116 is retained within cavity 114. Pouch 104 is preferably formed of natural latex, but may also be formed of other materials having similar suitable properties as will be described in more detail below. Sponge 116 is formed of any suitable soft resilient mass or any sponge-like material and may be of any desired suitable shape, but is preferably circular. The diameter of sponge 116 can be the same as the diameter of the pouch body 106, larger than the diameter of pouch body 106, or smaller than the diameter of pouch body 106, so long as neck portion 118 is able to retain sponge 116 at closed end 110 of pouch 104. Sponge 116 may preferably be between one half inch to over two inches thick in order to obtain the desired length of pouch 104 when sponge collapses. For example, a two-inch-thick sponge can be compressed to a one-half inch thickness by applying pressure on the surface of the sponge by an erect penis. In this case, there is a one and one half inch increase in the length of pouch 104 due to the compression of sponge 116 regardless of any other increase in the length of pouch 104. In addition, the surface of sponge 116 may be provided with a smooth coating to reduce or prevent any abrasion that may result on the penis due to contact with sponge 116. For this purpose, a polyurethane coating may be provided on sponge 116.
In addition, retention sponge 116 may have an insertion opening 120 formed in the outer surface of sponge 116, facing open end 108 of condom 100. Insertion opening 120 is configured to receive a finger of a user to facilitate deployment of condom 100 in a vagina by inserting the sponge with a finger so that no separate insertion tool is required. Furthermore, the provision of insertion opening 120 and the presence of sponge 116 in sponge cavity 114 ensure that a user does not accidentally penetrate closed end 110 of condom 100 during insertion.
Thus, condom 100 may be inserted into vagina 18, and positioned as illustrated in
A normal vaginal canal length is two to three inches, but penetration by a penis at the time of intercourse, can increase the length of the vaginal canal to six or seven inches depending on the anatomy of the sexual organs of the partners. The present invention is constructed with a length of two to three inches between outer frame 102 and closed end 110 in the pre-deployment stage. As illustrated in
This shortening of pouch 104 can be due solely to a spring-like action cause by convolutions 112 drawing pouch 104 back to its original deployed configuration, illustrated in
Elastic member 124 can greatly increase the longitudinal retractive bias of condom 100 for returning the condom to its original contracted configuration. Thus, elastic member can retain pouch 104 at a length of about two to three inches, while the actual fully extended length of pouch 104 might be five, six, seven, or greater inches. This built-in longitudinal spring bias in combination with the retention properties of sponge 116 causes outer frame 102 to remain in contact with the female anatomy surrounding the vagina, as illustrated in
In addition, triangularly-shaped outer frame 102 can also have a spring-biased contour associated with it. This enables outer frame 102 to flex so as to better retain contact with the vulva of the female when condom 100 is in vagina 18, and provides additional contractive bias to pouch 104 in the longitudinal direction. Outer frame 102 is preferably sufficiently resilient to flatten out during penetration by the male to provide more intimate contact during intercourse, as illustrated in
a and 5b illustrate an alternative embodiment of the invention in which elastic members 124 are attached to the exterior of pouch 104 rather than to the interior. In yet another alternative embodiment, as illustrated in
In order for the condom of the invention to function properly, it is very important to ensure that it is pinhole free. In this regard, as illustrated in
Both pouches 704, 705 share the same outer frame 108 and define substantially the same sponge cavity 114 for retaining a sponge 116. With this structure, first pouch 704 serves as a longitudinal elastic member to provide resiliency and longitudinal contractive bias to return first pouch 704 and second pouch 705 to a contracted configuration after being elongated. Second pouch 705, being thicker and substantially less elastic than first pouch 704, reduces the chances of failure of the condom due to a pinhole, tear, or the like.
While specific embodiments have been illustrated and described in this specification, those of ordinary skill in the art appreciate that any arrangement that is calculated to achieve the same purpose may be substituted for the specific embodiments disclosed. This disclosure is intended to cover any and all adaptations or variations of the present invention, and it is to be understood that the above description has been made in an illustrative fashion, and not a restrictive one. Combinations of the above embodiments, and other embodiments not specifically described herein will be apparent to those of skill in the art upon reviewing the foregoing disclosure. The scope of the invention should properly be determined with reference to the appended claims, along with the full range of equivalents to which such claims are entitled.
This application is a continuation of U.S. patent application Ser. No. 10/664,861, filed Sep. 22, 2003, which is incorporated by reference in its entirety herein and which claims the benefit of U.S. Provisional Patent Application No. 60/411,989, filed Sep. 19, 2002, and U.S. Provisional Patent Application No. 60/411,994, filed Sep. 19, 2002.
Number | Date | Country | |
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60411989 | Sep 2002 | US | |
60411994 | Sep 2002 | US |
Number | Date | Country | |
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Parent | 10664861 | Sep 2003 | US |
Child | 12542848 | US |