Surgery – Male reproductory tract shields or birth control devices – Condoms
Reexamination Certificate
2000-04-06
2003-03-25
Brown, Michael A. (Department: 3764)
Surgery
Male reproductory tract shields or birth control devices
Condoms
C128S918000
Reexamination Certificate
active
06536438
ABSTRACT:
TECHNICAL FIELD OF INVENTION
The invention relates to condoms with improved security.
BACKGROUND ART
Nowadays condoms are the most wide-spread and from many aspects the most secure contraceptive devices which protect also against STD-s (sexually transmitted diseases). Nevertheless many people feel repugnance to condoms since the fear from slipping down thereof causes psychic troubles.
To solve the problem of slipping down a size choice of the condoms recently available commercially has been offered. When choosing the condom size users take into consideration the sizes of penis in full erection. During coitus, however, erection can decrease in such an extent mainly due to postponement of ejaculation which decrease can not be followed properly by the condom. Consequently the generally used condoms stay at the desired position only in the erected state of a penis.
Although anatomical appearance of the penis may be very different individually, the blood leaves at first from the front part thereof i.e. from the glans penis when erection decreases. Then the penis will take a tapering conical form so the condom can slip down easily. Some manufacturers sell so-called comfortable varieties of condoms which have an increased diameter at their closed end. Also this variety is advantageous in full erection only, moreover, by an anatomical appearance showing a glans penis with a diameter less than that of the diameter of the body of the penis it is decidedly disadvantageous as the condom can slip down more easily.
A wide scale of spermicides and lubricants is used on up-to-date condoms, The outstanding effects exerted by such substances are required by the users, however, should the erection decrease such materials promote slipping down of the condom.
In a state of decreased erection the vaginal discharge can also get into the inner part of the condom and the lubricating effect of this discharge might also promote slipping down of the condom.
Sperms can get out of the penis also before ejaculation in the presemen. During a decreased erection these sperms can get out of the slipped down condom similarly to the sperms ejaculated. The seminal fluid itself also has a lubricating effect.
A further problem is that in case if the condom slips down during a decreased erection then the pathogens of STD-s can cause an infection either by getting into the inner part of the condom or by getting out of it.
Due to the decreasing erection the coitus has to be terminated immediately after ejaculation so that the condom can not stay in the vagina and its content can not be emptied thereto.
A frequent cause for tearing the condoms is that they are hurt by the nails of users trying to retain them on their place when they are felt slipping down. Once the slipping down of the condom could be hindered there would be no need to retain it by the hand and therefore the danger of its tearing would be diminished.
The above problems separately or altogether lead to the psychic troubles connected with the condom use which problems are the main causes for the repugnance from the condom use and which finally can cause also an urging of ejaculation impairing thereby the quality of coitus. As the use of the condoms now commercially available requires an intensive attention it is hard to achieve an undisturbed coitus by their use.
Hungarian Patent No. 162 959 describes a contraceptive condom that can be stuck to the penis. The condom disclosed therein has an adherent layer applied in a ring form on the inner surface of its open end having a rim which rim is suitably perforated. A removable protecting cover is stuck over the adherent layer and a handling cover made of a more stiff material is stuck removably to the outer surface of the container in order to protect the material of the container and to enable users to take the condom thereby while sticking it.
The condom disclosed in the above Hungarian patent specification is in fact a little sacculus that can be put to the tip of the penis; it has a really small size and its primary purpose beside hindering the sperms in getting out of the condom is to cover as a small part from the surface of the penis as possible and thereby to diminish the decrease of the direct contact between the partners due to the condom use in the slightest degree possible (column 4, paragraph 4). In case of the condoms used formerly and made of relatively thick rubber this solution could improve the quality of coitus with condom use by letting the more sensible parts of the penis uncovered. In case of the nowadays wide-spread condoms made of very thin rubber, however, this advantage shrinks into insignificance beside the disadvantage that the disclosed condom covering only the tip of the penis provides no protection against the STD-s. AIDS and other STD infections can be transmitted namely not only through the urethra but also through the small injuries occurring during coitus on the sensible parts of the penis which parts are uncovered by the condom disclosed in the Hungarian patent specification No. 162 959. The discharge getting into the condom through the holes of the perforated rim might also decrease the adhesive efficiency of the adhesive material.
A further disadvantage rendering also the practical applicability of the condom disclosed in Hungarian patent specification No. 162 959 questionable is that due to the small size of the condom and its localisation on the tip of the penis the adhesive material to be used on the inner surface at the open end of the condom on the sensible skin of the penis should possess such a strong effect which would irritate the skin considerably. Similarly, the solvent-containing cream or the liquid proposed for the removal of the condom (column 2, paragraph 2) might also cause a skin irritation and drying out of the skin since it has to be applied to a very sensitive skin surface. Neither the other possibility proposed for the afteruse removal of the condom, i.e. the mechanical removal can be imagined to be painless provided that the applied adhesive material is strong enough to keep the small size condom on its place during all the movements in the course of coitus.
A further problem is that the condom disclosed in Hungarian patent specification No. 162 959 is not adapted to the individual differences occurring in the skin of penis. The disc-shaped flat rim should fit to the skin plicae at the outlet part of urethra which renders the slip-proof, safe and comfortable applicability questionable also from anatomical point of view.
Hence up to now no condom is available which would surround the penis safely and in a slip-proof manner during the whole coitus, hinder discharges and pathogens in getting out of the condom or in getting into it by a perfect closing and thus protect against both unwanted pregnancy and infections.
The objective of the invention is to develop a condom with improved safety which does not slip down during coitus and thereby eliminates the above problems. The further objective of the invention is to develop a condom with improved safety which is suitable for achieving also additional desired effects, especially which is an aid in preventing precocious ejaculation (ejaculatio praecox).
DISCLOSURE OF THE INVENTION
The invention relates to a condom with improved safety fulfilling the above requirements, said condom having an oblong container open at one end and having an adhesive layer applied in a ring form on the inner surface of its open end; said condom is characterized in that it covers the penis essentially in its full length and the adhesive layer is situated on the first third of the open end of the condom.
Further the invention relates to a condom with improved safety fulfilling the above requirements, said condom having an oblong container open at one end and having an adhesive layer applied in a ring form on the inner surface of its open end; said condom is characterized in that it covers the penis essentially in its full length and the adhesive layer is situated in the area closer to the open end of the condom.
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