JP3930240B2 - Condom with lubricant - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a condom provided with a lubricant for protecting human skin.
[0002]
[Prior art]
The mainstream of what is currently used as a condom lubricant is silicone oil, which is applied and adhered to the condom. However, since silicone oil is oily, when it adheres to the body, it must be washed off with a detergent or the like.
[0003]
As a solution to this problem, there is a condom lubricant described in JP-A-7-267849. In this technique, squalane is added to the lubricant.
However, the condom lubricant blended with this squalane may cause the rubber films to adhere to each other due to insufficient penetration into the rolled-up portion of the condom.
Moreover, the condom lubricant blended with squalane can increase the sliminess of the solution as the viscosity is increased. However, a stringing phenomenon occurs accordingly.
In addition, surfactants such as alkylbenzene sulfonates are used as spermicides. These are applied or injected into the genital area of the human body before sexual activity.
[0004]
[Problems to be solved by the invention]
The present invention has been made in such a situation, and even if it adheres to the body, it can be easily washed off with water, has excellent penetration into the rolled-up portion and sliminess during use, and uses a condom. To provide a condom lubricant excellent in wettability that gives a moist feeling, and to provide a condom coated with this condom lubricant. It is aimed.
In addition, the conventional technology uses only oil-based or water-based lubricants, and the additives that can be used are limited, making up a lubricant that prevents whitening of condoms and also provides sliminess when applied and when wearing condoms. Difficult to do.
In addition, when spermicide is applied or injected before sexual activity, the spermicide will be adsorbed to something other than sperm (skin, etc.), and the effective one will decrease, and the spermicide effect may decrease. is there. However, when the amount of an interfacial agent that is a spermicide is increased, it is necessary to consider the influence of rough skin on the skin.
[0005]
[Means for Solving the Problems]
The present invention presents the following means based on research conducted by the inventors and numerous experiments in order to solve the above problems.
A lubricant in which a solution containing a spermicide and a bactericide is dispersed in a gel is formed and applied to a condom.
As the gel in which the above solution is dispersed, a gel that melts by body temperature or a material that breaks by mechanical force can be used to act on the solution dispersed in the gel.
The high molecular substance constituting the gel does not show a sharp melting point like a low molecular substance and melts over a certain temperature range. In addition, the viscosity changes depending on the temperature, and this property can be used to adjust the time when the drug acts.
[0006]
An explanation will be given by taking as an example a lubricant in which a solution containing a drug such as a spermicide is dispersed in a solution thickened by a polymer substance.
When the lubricant is used on the human body, the polymer solution of the lubricant contacts the human body and is warmed from room temperature to near body temperature. As a result, the physical properties of the polymer solution change, and the viscosity of the polymer solution decreases. That is, the liquid changes from a rubbery state to a liquid state from a highly viscous liquid to an easily flowable liquid.
[0007]
Due to the change in physical properties of the polymer solution, the drug-containing solution dispersed in the polymer solution is easily released from the polymer solution or mixed with the polymer solution. For this reason, the chemical | medical agent acts on the human body surface which contacted the lubricant.
As the polymer solution, it is possible to use a polymer solution that dissolves or decreases in viscosity near body temperature and easily flows. As the polymer constituting the polymer solution, it is possible to use a single polymer substance, but when several kinds of polymer substances are mixed, dissolution or decrease in viscosity occurs within a certain temperature range. It is possible to use.
[0008]
The case where the solution containing a chemical | medical agent is disperse | distributed in the gel which collapses with mechanical force is demonstrated.
As an example of a gel that collapses due to mechanical force, agar or the like can be used.
Agar gels disintegrate easily when force is applied. By dispersing a solution containing a drug in such a gel, the gel can be disintegrated at the time of use, and the drug can be released out of the gel to act on the drug.
That is, when used on the human body, the drug in the gel comes out of the gel and rubs against the skin by rubbing against the skin.
[0009]
Next, as what is disperse | distributed in a gel, it is possible to use what mixed and emulsified oil, water, and surfactant. In addition, the ratio of oil, water, and surfactant can be suitably adjusted according to a use and a use condition, and adjusts a mixing ratio as needed.
By holding the emulsion in the gel, it is easy to maintain the properties of the emulsion, and even when the emulsion is separated, the water and oil constituting the emulsion are gelated by the gel having low fluidity. It can be prevented from flowing out.
[0010]
And since the said emulsion is in the state in which micelles are formed, the interaction between oil molecules is inhibited by micelles, and even when using high viscosity oil, the viscosity as a lubricant is lowered by emulsification. And the elongation of the lubricant is improved. Thereby, it is possible to extend the selection range of the oil to be used.
Furthermore, since this emulsion contains water, it can contain a water-soluble component. Since the water-soluble component is isolated from the oil by the micelle, it can be easily mixed with the lubricant and stable properties can be obtained.
Moreover, since the emulsion contained in the gel is composed of oil, surfactant and water, it can be easily washed with water. And even by wiping with a towel or tissue, it can be removed without leaving a greasy feel.
[0011]
By using a dispersion of emulsion in a gel as a lubricant and using it in a condom, it is possible to prevent air from entering the condom, improve the condom's properties, and improve the contraceptive effect. It can protect against the genital area.
By applying the lubricant in which the emulsion is dispersed in the gel to the inside of the sac for the condom semen of the condom, it is possible to kill the sperm in the semen reservoir by the lubricant.
In particular, a spermicide is included in the emulsion, and the gel is configured to melt or disintegrate by attaching a condom to the penis, thereby retaining an effective spermicidal component until ejaculation or wearing a condom. It is possible to improve the spermicidal effect of the lubricant.
[0012]
By applying a lubricant in which the emulsion is dispersed in the gel to the tip of the condom, it is possible to protect the skin of the female genital area when the penis with the condom is inserted into the female genitals. When the lubricant contacts the skin, the gel disintegrates or dissolves, and the emulsion inside the gel spreads to protect the skin.
In particular, when the condom is a female condom, the condom is smoothly inserted and the skin is protected.
When the lubricant in which the emulsion is dispersed in the gel is applied to the rear part of the condom, the lubricant can be attached to the entire condom. When the condom is formed, the lubricant is applied to or attached to the rear part of the condom, and the condom is rolled up, and the lubricant attached to the rear part of the condom is pushed out to the front end side and spreads over the entire condom. Furthermore, even if there is a possibility that sperm leaks from the rear part of the condom, it is possible to kill the sperm.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
As a result of many experiments, the present inventor has obtained a lubricant that does not give oiliness to the skin, gives a moist feeling, and does not whiten rubber used for condoms and the like.
A lubricant is obtained by dispersing an emulsion in which oil that prevents sticking and whitening of rubber and water that moisturizes the skin are mixed in a gel.
FIG. 1 is a schematic diagram showing a configuration in which an emulsion flows out from a gel.
As shown in FIG. 1, the gel is melted, fluidized or disintegrated by heating or mechanical force, and an emulsion dispersed inside the gel is allowed to act.
When the gel 11 is fluidized due to a temperature rise and the emulsion 12 cannot be retained, the emulsion 12 flows out of the gel 11 as shown in FIG. Thereby, it becomes possible to make the emulsion 12 currently hold | maintained with the gel 11 act.
When the gel 13 is easily disintegrated by mechanical force (mechanical force), as shown in FIG. 1B, the gel 13 disintegrates and the emulsion 12 held inside the gel 13 becomes the gel 13. And the emulsion 12 acts.
[0014]
The lubricant is 0.3 to 15 parts by weight of oil, 0.01 to 15 parts by weight of a surfactant, and 0.2 to 12 parts by weight of a polymer material (gelling agent) constituting the gel. It is composed of an appropriate amount of water, and a small amount of preservatives and the like are added.
[0015]
As the oil used for the lubricant, silicone oil can be used depending on the situation of use.
[0016]
Silicone oil can be used as the oil component used in the lubricant applied to the condom.
Those using silicone oil as the oil component of the lubricating oil have a stable property against rubber, can prevent adhesion of the condom, and can maintain the property of the condom for a long period of time. By using a silicone oil that is used for conventional condom lubrication, such as a lubricant for medical injection needles and syringes, safety to the living body can be ensured. It is also possible to adjust the viscosity of the lubricant by adding rosin.
[0017]
By blending oil and water with a surfactant and emulsifying, the lubricant itself has a low viscosity and gives a smooth feeling. Moreover, a good fit can be obtained when a condom is attached.
Since this emulsion contains a surfactant and a large amount of water, it has a high dissolution rate in water and can be easily washed away with water. Furthermore, when contacting the skin, not all of the contact surface is covered with oil, and moisture adheres to a part of the skin.
[0018]
As described above, when the emulsion comes into contact with hydrophilic skin, the micelle breaks and moisture adheres to the skin, but when it comes into contact with hydrophobic rubber, the micelle does not break, Does not touch the rubber. Thereby, the whitening phenomenon of rubber can be prevented.
By blending water and a surfactant into silicone oil to form an emulsion, the emulsion itself is less viscous and gives a smooth feeling.
By using this emulsion in a condom, the condom can be mounted smoothly, and a fit can be obtained after mounting.
Furthermore, since this emulsion has affinity with rubber and is excellent in permeability, it has excellent penetration into the rolled-up condom and does not whiten the condom. Gives the condom a moist feeling and gives it a slimy character.
[0019]
As other usages of the emulsion and the lubricant in which the emulsion is dispersed in the gel, it can also be used as a lotion used during sexual intercourse, and can be used for lubrication when inserting a genital organ. Since it is stable against rubber products, it can be used as a lubricant for equipment having a rubber seal as a lubricant used when a wet suit is worn.
Furthermore, it can be used as a lubricant for shaving as a lubricant applied to the abdomen of the mother for echography of the fetus, as a lubricant when inserting a stomach camera into the human body.
[0020]
Next, as the surfactant used in the emulsion, one or more of menfenegol and nonoxynol can be used.
Since the surfactant is used as an emulsifier, it is selected according to the oil to be used. It is also possible to improve the wet permeability of the oil by adjusting the content of the surfactant.
[0021]
When used for condom lubrication, memphegol or nonoxynol can be used. This is because memphegol and nonoxynol have a spermicidal effect and can improve the contraceptive rate. In particular, the use of memphegor can minimize the effects on the vagina.
In addition, a lubricant composed of an emulsion using menfenegol or nonoxynol or a gel in which the emulsion is dispersed can also be used as a lotion during sexual intercourse not intended for reproduction.
A spermicide or a bactericidal agent can be added to the emulsion and lubricant. Many of the bactericides have a surface-active action, and can be used as a spermicide or bactericidal agent while being added to the lubricant as a surfactant.
For this purpose, catechin, sodium cetyl sulfate, undecylenic acid (undecylenate), undecylenic acid monoethanolamide, alkyltrimethylammonium chloride, distearyldimethylbenzylammonium chloride, stearyldimethylbenzylammonium chloride, stearyltrimethylammonium chloride, cetyltrimethylammonium chloride Cetylpyridinium chloride, benzalkonium chloride, benzethonium chloride, lauryltrimethylammonium chloride, alkyldiaminoethylglycine hydrochloride, chlorhexidine hydrochloride, orthophenylphenol, chlorhexidine gluconate, cresol, chloramine T, chlorxylenol, chlorcresol, chlorphenesin, Salicylic acid (salicylate), alkylisoquinolinium bromide, Cetyltrimethylammonium bromide, domifene bromide, thymol, thiram, dehydroacetic acid (dehydroacetate), triclosan, trichlorocarbanilide, parachlorophenol, halocarban, phenol, sodium lauroylsarcosine, resorcin, dodecaethylene glycol monolaurate, One or more of laureth and methoxypropyloxyethylene glycol laurate can be added as a bactericidal or spermicidal agent. In this case, the bactericidal spermicide can also serve as a surface active component in the lubricant.
[0022]
Various arbitrary components such as a wetting agent, a humectant, a gelling agent, a neutralizing agent, a fragrance, and a coloring agent can be added to the water contained in the emulsion or gel.
The emulsifier or lubricant of the present invention can contain a humectant. Suitable humectants for use herein include sorbitol, polyethylene glycol, butylene glycol, hexylene glycol, ethoxylated glucose derivatives, hexanetriol, glycerin, water-soluble polyglyceryl methacrylate lubricants and panthenol.
Further, the emulsion exhibits a white color, and color development is good when a colorant is mixed. It is also possible to add food colors such as Red No. 106, Blue No. 2, Yellow No. 5. It is also possible to add a fluorescent agent to the emulsion or lubricant.
[0023]
It is also possible to add a fragrance to the emulsion or lubricant, and it is also possible to use tea tree oil, which is an essential oil component derived from a plant of the genus Myrtaceae, Pandillo, Eucalyptus, Sphagnum, or Cayupute It can be done. Furthermore, the tea tree oil, anise oil, orange oil, clove oil, citronella oil, jasmine oil, camphor oil, spearmint oil, geranium oil, turpentine oil, sandalwood oil, peppermint oil, bergamot oil, boadrose oil, eucalyptus oil, lavender One or more of oil, lemongrass oil, lemon oil, rose oil, musk, civet, castor, ambergris, anethole, eugenol, geraniol, citronole, and peppermint oil can be added.
By adding mint oil to the lubricant used in the condom, a clean feeling can be given to the condom. In addition, by adding rose oil, it is possible to promote the enhancement of emotion during sexual intercourse.
Tea tree oil has a bactericidal effect, is not irritating to the skin, and is known not to affect the skin even when applied to the pubic area.
[0024]
Next, the thickener or gelling agent that constitutes the gel will be described.
As the substance constituting the gel, natural thickening polysaccharides, natural thickening proteins and the like can be used.
As a gel, the thing which has a melting temperature range in the range of 30 degreeC-37 degreeC can be utilized. As described above, the polymer material does not have a sharp melting point and melts over a certain temperature range. As the temperature rises, the viscosity decreases, and as the temperature rises, it changes from a rubbery state to a viscous liquid and a liquid that flows easily.
The gel only needs to be in a state capable of holding the emulsion at room temperature, and a gel that melts or decreases in viscosity when heated by body temperature can be selected. In this case, as the one that holds the emulsion, a polymer solution that exhibits the above properties can be used in addition to the gel, and a liquid that can easily flow around body temperature can be used.
And as a gel which disintegrates, what shows the property similar to general agar in intensity | strength can be used.
[0025]
As what the emulsion holds, for example, a gel or a solution using gelatin can be used.
[0026]
In particular, a gel using gelatin has soft elasticity and stickiness, and has a property of melting at a mouth temperature. Those using gelatin are comfortable to touch and are suitable for constituting the lubricant of the present invention. By dispersing the emulsion in the gel composed of gelatin, the gel dissolves at body temperature, and the emulsion Acts on the skin.
Similarly, a gel using carrageenan can be used. Further, by using agar, it is possible to construct a gel that is easily disintegrated.
The selection of the gel or polymer solution can be further widened by adjusting the properties of the emulsion. A polysaccharide or the like can be added to the emulsion to adjust the viscosity or osmotic pressure, thereby improving the stability of the emulsion in a gel or polymer solution. When sucrose is added to the emulsion to adjust the viscosity, osmotic pressure, or surface tension, the emulsion can be easily adjusted without affecting the human body.
[0027]
A configuration for applying the lubricant to the condom will be described with reference to the drawings.
FIG. 2 is a side cross-sectional view of the condom in the rolled-up state.
As a method for applying the lubricant to the condom, there are a method in which the condom is immersed in the lubricant and a method for injecting the lubricant into the condom from a nozzle or the like.
[0028]
When the condom is immersed in the lubricant, the condom is rolled up. The condom is composed of a trunk, a tip, and a semen reservoir.
The trunk is configured in a tubular shape and covers the penis root. The tip is configured in a hemispherical shape and covers the phallus head of the penis. The semen reservoir is formed in a sac shape, is provided at the tip, and protrudes outside the condom.
In the state where the condom is rolled up, as shown in FIG. 2, a part of the trunk portion 2 and the tip portion 3 are rolled up. And the condom 1 is immersed in a lubricant in this rolled up state.
[0029]
Thereby, the lubricant 5 is applied to the semen reservoir 4 and to the front and back of the tip 3. However, since the trunk | drum 2 of the condom 1 exists in the rolled up state, a lubricant does not adhere abundantly. In particular, since the rear portion 9 of the condom 1 is positioned inside in the rolled up state, the lubricant is not excessively adhered.
Since the lubricant 5 is applied to the semen reservoir 4 of the condom 1, when the condom 1 is mounted, excess lubricant is discharged from the semen reservoir 4 together with air by crushing the semen reservoir 4. Thereby, the semen reservoir 4 can be easily vented. Further, since the lubricant 5 is also applied to the distal end portion 3 of the condom 1, the wearing of the condom and the insertion of the penis into the female genital can be performed smoothly. Since the amount of lubricant applied to the body 2 of the condom 1 can be reduced, it is possible to prevent the lubricant from being interposed between the penis root and the condom 1. Thereby, falling off from the penis of the condom 1 can be prevented.
Further, when the lubricant 5 is injected into the semen reservoir 4, the semen reservoir 4 can be kept in a contracted state to prevent air from entering the semen reservoir 4. At this time, the inner side surfaces of the semen reservoir 4 are adhered to each other by the lubricant 5, thereby making it difficult for air to enter the semen reservoir 4.
[0030]
FIG. 3 is a partially cutaway side view of the condom, and FIG. 4 is a partially cutaway side view of the tip.
As shown in FIGS. 3 and 4, the lubricant 5 diffuses throughout the inner surface 6 and the outer surface 7 of the condom tip 3. And the film 8 by the oil component in an emulsion coat | covers the condom 1. FIG.
Thereby, oxidation and adhesion of the condom can be prevented and rewinding can be easily performed. However, the lubricant 5 (a micelle containing a water-soluble substance) remains in the tip 3 or the semen reservoir 4 of the condom 1 and can ensure lubrication when the penis is inserted.
In addition, as an oil component, the silicone oil conventionally used for protection of a condom can be used. Silicone oil can constitute a lubricant that can be easily removed from the body while maintaining the conventional antioxidant effect and anti-adhesion effect.
[0031]
Next, a mixture of a lubricant and silicone oil can be used for the condom.
FIG. 5 is a schematic diagram showing the state of the lubricant in the silicone oil.
By mixing the lubricant and the silicone oil, the lubricant is dispersed in the silicone oil 8 as shown in FIG. In this case, the emulsion 12 is held in the gel 11. The emulsion 12 is held in the gel 11 because the gel 12 is in a state of low fluidity.
By applying a mixture of lubricant and silicone oil to the condom 1, the lubricant remains at the application position, but excess silicone oil 8 forms a film on the entire condom 1 to protect the condom 1. To do. Even when the condom is rolled up, the silicone oil spreads throughout the condom and forms a film on the condom.
[0032]
As a method of mixing the lubricant and the silicone oil, the lubricant is added to the silicone oil and mixed with a mixer. In this process, the lubricant is coated on the silicone oil. In the lubricant, the emulsion is in a state of being coated with a gel, and the gel is in a state of being coated with silicone oil. For this reason, the effects of the lubricant and the silicone oil are maintained.
[0033]
Next, a method for configuring the lubricant will be described with reference to FIG.
FIG. 6 is a schematic diagram illustrating a preparation configuration of a lubricant.
First, in the mixing tank 21, water and a surfactant are mixed. At this time, glycerin and sugar can be added to adjust the properties of the aqueous solution.
In the mixing tank 22, oil (silicone oil or the like) is stored, and the aqueous solution and oil prepared in the mixing tank 21 are introduced into the mixing tank 23 and emulsified.
[0034]
In the mixing tank 24, water is added to a gelling agent (gelatin or the like) to prepare a gel. At this time, glycerin and sugar can be added to adjust the properties of the gel.
The emulsion and gel prepared in the mixing tank 23 are introduced into the mixing tank 25 and mixed.
Thereby, the lubricant in which the emulsion is held in the gel is constituted.
The mixing ratio of the emulsion and the gel is not limited as long as the emulsion can be wrapped by the gel. That is, the gel is mixed to hold the emulsion and may be in a range that maintains the effective concentration range of the drug contained in the emulsion. At this time, the property of the gel at the time of melting is also taken into consideration. When a general gel is used, the lubricant can be obtained by mixing the emulsion with an approximately equal amount of gel.
[0035]
【Example】
As a result of repeated experiments based on numerous findings, the present inventor has found that a lubricant that is excellent in penetration into the rolled-up portion of the condom and does not whiten the condom is appropriately selected under the conditions described below. It was confirmed that a plurality of lubricants for condoms with excellent penetration, wettability and slimeness into the condom roll-up portion can be obtained by mixing or dissolving and using.
Silicone oil is used as the oil component constituting the emulsion, memphegol as the surfactant, and purified water. In addition, a small amount of additives such as preservatives, pH adjusters, or thickeners are added.
In the above preparation process, additives such as a certain surfactant and sugar are added to adjust the properties of the lubricant.
[0036]
First, silicone oil, water, and a surfactant are stirred with a stirrer to form an emulsion.
Here, 1 to 5 parts by weight of silicone oil and 1 to 5 parts by weight of menfegor are used, and an appropriate amount of purified water is added thereto. And it is emulsified by a mixer or a homogenizer.
The properties of the obtained emulsion were creamy, had a high dissolution rate in water, had a soft feel, and could be easily removed without feeling uncomfortable when attached to the human body.
Furthermore, it is also possible to add a preservative, a pH adjuster, and a fragrance to the lubricant. Depending on the type of pH adjuster or surfactant, it is possible to make the lubricant weakly acidic and further suppress the influence on the skin. In addition, by making it acidic, the self-cleaning action in the vagina is activated.
[0037]
In the range where the silicone oil content is 0.3 to 15 parts by weight and the menfenegol content is 0.01 to 15 parts by weight, a lubricant having the above properties can be obtained. In addition, the content of memphegol can be reduced by mixing with other surfactants such as glycerin, nonoxynol, and alkylpolyoxyethylene ether.
[0038]
The emulsion obtained by the above operation and the gel are mixed.
In this embodiment, a gel composed of gelatin, water, sugar, glycerin and the like is used as the gel. Here, gelatin is 0.2 to 5 parts by weight. The content of gelatin can be adjusted in the range of 0.2 to 12 parts by weight.
[0039]
This constitutes a lubricant with 1 to 5 parts of silicone oil, 1 to 5 parts of surfactant, and 0.2 to 5 parts of gelatin.
In the constituted lubricant, the emulsion is retained in the gel. When the lubricant is warmed to near the human body temperature, the gel dissolves and the emulsion spreads under the gel.
Lubricants with similar properties can be obtained within the range of 0.3-15 parts by weight of silicone oil, 0.01-15 parts by weight of surfactant, and 0.2-12 parts by weight of gelatin. It can be done.
[0040]
When the lubricant of the above embodiment is used for the condom, the lubricant of the above embodiment is attached to the inside of the condom and the silicone oil is attached to the outside.
The condom constructed in this way can be stored for a long period of time, has no sense of incongruity in wearing, and can easily wash away the lubricant adhering to the penis even after removal. Even when ejaculation is performed in the condom, the lubricant gel melts due to body temperature, the lubricant and sperm are easily mixed, and the surfactant contained in the lubricant quickly stops the function of the sperm. . Thereby, the effect of contraception can also be improved.
[0041]
【The invention's effect】
As described in detail in the embodiments and examples of the invention, the skin is safe, fast in water, soft to the touch, and does not give a sense of incongruity when attached to the skin. Thus, a lubricant that can be easily wiped off can be constituted.
[0042]
Further, by using a lubricant in the condom, the lubricity, moisture retention and touch feeling of the condom can be improved, and the whitening of the condom can be prevented.
A lubricant can be used as a slimming agent that gives a feeling of slimness during use as an infiltrating agent excellent in penetration into the rolled-up portion of the condom. Even if it adheres to the body, it can be easily washed off with water.
[0043]
Since the emulsion that provides a lubricating effect is retained in the gel, the properties can be kept constant over a long period of time. Furthermore, even when the emulsion is unstable, the emulsion is retained by the gel, so that the quality can be maintained.
Furthermore, since the gel melts due to body temperature or collapses due to piston movement during condom wearing or sexual activity, air can be prevented from entering the condom until the condom is worn by the lubricant. And since it melts | disintegrates or collapses by mounting | wearing with a condom, it can mount | wear with a condom without a sense of incongruity.
By including a spermicide in the emulsion, the spermicide can be allowed to act when the condom is worn, and the probability of contraception can be improved.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing a configuration in which an emulsion flows out from a gel.
FIG. 2 is a side cross-sectional view of a condom in a rolled-up state.
FIG. 3 is a partially cutaway side view of the condom.
FIG. 4 is a partially cutaway side view of a tip portion.
FIG. 5 is a schematic diagram showing a state of a lubricant in silicone oil.
FIG. 6 is a schematic view showing a preparation configuration of a lubricant.
[Explanation of symbols]
1 condom
2 trunk
3 Tip
4 Semen reservoir
5 Lubricant
6 Inner side
7 outside
8 Silicone oil coating
9 Rear
11 Gel
12 Emulsions

Claims (1)

A condom coated with a lubricant,
The lubricant is to hold an emulsion in an aqueous gel,
The emulsion is composed of silicone oil and a surfactant, wherein the silicone oil is 0.3 to 15% by mass , the surfactant is 0.01 to 15% by mass ,
The surfactant is either one or two of memphegol or nonoxynol,
The aqueous gel is composed of gelatin,
A condom coated with a lubricant, wherein the gelatin is 0.2 to 12% by mass.

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