JP2008093283A - Jelly agent and condom - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the adhesion between a human body and rubber in a condom having no semen sump and fitted to the shape of a glans without any clearance formed therebetween. <P>SOLUTION: This condom 20 has a glans covering part 21 in its upper part and an opening part 23 for inserting a penis in its lower part, the glans covering part 21 tip has no semen sump and has a shape fitted to the glans without any clearance formed therebetween, and jelly 10 formed by combining polyol-based compound with carboxy vinyl polymer is applied to the inside of the tip of the glans covering part 21. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to the technology of condoms and jelly agents applied to condoms.

Conventionally, a condom has been known as a sack for male sexual disease prevention / contraception made of an elastic material such as rubber. Usually, the condom has a semen reservoir at the tip of the glans covering part. For example, Patent Document 1 discloses a condom having a semen reservoir (reference numeral 5 in Patent Document). The semen reservoir is a bag-like projection at the tip of the glans covering portion formed in a convex shape for collecting semen after ejaculation.
However, a condom having a semen reservoir cannot be fitted to a user's glans without a gap when worn. In addition, wrinkles and folded parts are formed around the semen reservoir. Therefore, even when the user wears, the user cannot feel a natural feeling as if he / she is not wearing it. Against this background, in recent years, condoms adapted to the glans shape without a semen reservoir without gaps have become known.
JP 2003-199780 A

On the other hand, the condom has applied jelly inside the tip of the glans covering part. Jelly plays a role in bringing the glans and condom into close contact. The jelly also plays a role in preventing air from entering the glans and the condom when worn. In other words, the jelly prevents rubber from being damaged by friction during intercourse when air enters the inside of the condom.
Some condoms having a conventional semen reservoir prevent the inflow of air into the semen reservoir by applying a jelly agent to the semen reservoir and closing the semen reservoir. However, it is difficult to use a conventional jelly agent to suppress air inflow in a condom having a semen reservoir with a tip-shaped glans shape or a condom attached to a female genital organ.

In the case of a condom having a conventional semen reservoir, the jelly needs to adhere the semen reservoir, ie rubber and rubber. However, in the case of a condom without a semen reservoir, the jelly needs to bring the glans, that is, the human body and rubber into close contact. Here, the jelly that adheres the rubber to the rubber used in the condom having the semen reservoir prevents the inflow of air in the small space of the semen reservoir and ensures the close contact of the semen reservoir. In the case where the human body and the rubber are brought into close contact with each other from the expanded state, it is difficult to obtain sufficient adhesion. In addition, the conventional jelly agent is mainly hydrophilic and has little adhesion to rubber, which may shorten the time during which it can remain at the adhesion position. That is, the jelly agent which adheres a human body and rubber | gum is needed by the shape change of the condom glans covering part tip in recent years. Furthermore, with the widespread use of female condoms, there is a demand for condoms that are easy to obtain a fit for women.
Therefore, in order to solve such a problem, a jelly agent capable of improving the adhesion between a human body and rubber in a condom or the like that fits without a gap in a glans shape without a semen reservoir is provided.

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.
The present invention uses a jelly agent for stabilizing adhesion of a rubber film to a human body and ensuring adhesion between the human body and the rubber film. As the jelly agent, a polyether-based polymer compound, a vinyl acetate resin, an ester gum, a polyisobutylene, or the like, which is a polyol compound, or a combination thereof can be used, particularly by using polyethylene glycol, While reducing the thickness of the agent, the adhesion and stability of the rubber film and the cushioning properties can be obtained.

  For example, polyethylene glycol, which is one of the polyol compounds, is a colorless and transparent highly viscous substance. The polyethylene glycol-based polymer is a biodegradable polymer imparted with hydrophilicity. The polyethylene glycol-based polymer becomes more hydrophilic as the ethylene oxide content in the polymer increases and swells in water. Polyethylene glycol polymers are also excellent in affinity with hydrophilic drugs.

The carboxyvinyl polymer can also thicken solvents other than water by selecting an alkali. Furthermore, the carboxyvinyl polymer is a water-soluble vinyl polymer and has almost no toxicity and irritation to the ocular mucosa / skin. Depending on the use situation of the carboxyvinyl polymer, the one whose pH is appropriately adjusted by adding an alkali agent or the like is used.
This carboxyvinyl polymer is widely used in cosmetics because it has a stable viscosity and is excellent in thixotropic properties. In addition, carboxyvinyl polymer is most frequently used as a thickener because it has a high thickening effect, hardly changes in viscosity due to temperature, and is hardly contaminated by microorganisms. In light of these, carboxyvinyl polymers are often used in pharmaceuticals and cosmetics.
In addition, carboxyvinyl polymer has a track record of being used in the rectum, vagina or urethra in domestic pharmaceuticals. That is, the carboxyvinyl polymer is a substance with high safety against the mucous membrane of the human body.

A preservative can be added to the jelly agent to improve the storage properties of the jelly agent. As the preservative, pharmaceutical preservatives used in cosmetics, eye drops and the like can be used. For example, parahydroxybenzoic acid esters. In the present invention, the preservative is not particularly limited as long as it prevents the invasion, growth, and proliferation of microorganisms.
In addition, since the jelly agent of the present invention does not contain moisture, the amount of the preservative can be reduced.

The jelly agent is such that the weight ratio of polyethylene glycol is 90.0 to 99.8 and the carboxyvinyl polymer is 0.1 to 5.0. Then, an appropriate amount of preservative is added. It is also possible to adjust the jelly agent by adding water thereto. When water is not added, the jelly agent can be obtained by setting polyethylene glycol to 90 w% or more and adding carboxyvinyl polymer and additives.
In this way, the jelly agent can enhance the adhesion between the human body and the rubber product due to the high viscosity of the polyethylene glycol and the carboxyvinyl polymer. In addition, since the polyethylene glycol is easily dissolved in water, the jelly does not lose its adhesion even by perspiration. Furthermore, since polyethylene glycol is dissolved in water, it generates heat of hydration and becomes equivalent to the human body temperature, so that the user can feel a natural wearing feeling even when wearing a rubber product.

That is, in claim 1, in the jelly agent that adheres the human body and rubber to lubrication,
A jelly agent comprising a polyol compound and a carboxyvinyl polymer, wherein the polyol compound is 90.0 to 99.8 weight percent and the carboxyvinyl polymer is 0.1 to 5.0 weight percent is used.

  Further, in claim 2, the jelly agent is applied to the condom.

  As effects of the present invention, the following effects can be obtained.

  In claim 1, since the polyol compound in the component of the jelly agent is a colorless and transparent highly viscous substance, the adhesion between the rubber product and the human body can be improved. Similarly, since the polyol compound easily absorbs moisture, the adhesion is not impaired by sweating or the like. Furthermore, since the polyol compound generates heat of hydration, the wearing feeling can be improved by the warm feeling effect on the user. Moreover, even if the thickness of the jelly agent is small, sufficient adhesion and stability can be obtained, and a sense of unity with the human body surface can be obtained. Moreover, since the adhesiveness with respect to rubber | gum is high and the property stability in the apply | coated state and there are few movements from the applied position, a jelly agent with high position retention property can be obtained.

  According to the second aspect of the present invention, the effect of the first aspect can be obtained with a condom adapted to the glans shape without a semen reservoir without any gap. That is, the adhesion between the condom and the glans can be improved. Also, the adhesion is not impaired by the sweating of the glans. Furthermore, the user can feel a natural wearing feeling even when the condom is worn. In this way, it is possible to improve the wearability of a condom without a semen reservoir.

Next, embodiments of the invention will be described.
FIG. 1 is a partial side sectional view showing an overall configuration of the condom, and FIG. 2 is a perspective partial sectional view showing the condom in a packaged state.

In the Example of this invention, the jelly 10 which is a jelly agent using the polyethylene glycol which is one of the polyol compounds will be described.
The jelly 10 here is a jelly that is used to closely adhere and lubricate a human body and a rubber product in the sanitary product field. In this embodiment, the jelly 10 contains polyethylene glycol as a main ingredient, and is prepared by adding a carboxyvinyl polymer and a preservative thereto. In the examples, a jelly agent having a polyethylene glycol content of 90.0 to 99.8 weight percent and a carboxyvinyl polymer of 0.1 to 5.0 weight percent plus a preservative is used.

Next, the example which used the jelly 10 for the male condom 20 is demonstrated using FIG.
The condom 20 is a contraceptive device in which a thin film of latex rubber or polyurethane rubber is formed into a sac shape. Moreover, since the condom 20 also blocks mucosal contact, it has a certain effect on prevention of sexually transmitted diseases such as HIV. The condom 20 is for men and is used by covering the penis in an erected state.
The condom 20 is made thin in order to reduce the feeling of use and discomfort, and the thickness is about 0.02 to 0.1 mm.

As shown in FIG. 1, the condom 20 is integrally formed from a glans covering part 21, a trunk part 22 and an opening part 23.
Here, the upper part of the condom 20 is comprised by the glans covering part 21, and the glans covering part 21 is comprised by the substantially glans shape so that it may fit in a glans without a clearance gap. The glans covering part 21 is configured to have a rounded substantially conical shape or a strawberry shape, and is configured to have a larger diameter than the body part 22 below the glans covering part 21. As for the glans covering part 21, the jelly 10 is apply | coated inside. The film of the glans covering part 21 has a sufficient film thickness that does not break during sexual intercourse.
A trunk portion 22 is connected to the lower portion of the glans covering portion 21. In the lower part of the condom 20, the opening 23 is opened by forming a ring portion 24 around it. The ring portion 24 is formed to be thicker than the trunk portion 22 by rolling back the membrane constituting the condom 20 in order to suppress the condom 20 from remaining in the vagina.
In addition, the silicone oil is apply | coated to the whole condom 20, and the lubricity at the time of the outer surface of the condom 20 and mounting | wearing is ensured.

By setting it as such a structure, a user's glans and the glans covering part 21 inner side of the condom 20 are closely_contact | adhered via the jelly 10. FIG.
Thus, the jelly 10 can improve the adhesion between the glans covered part 21 of the condom 20 and the glans of the user. Further, the jelly 10 can prevent the adhesion between the glans and the glans covering part 21 from being impaired by sweating of the glans or the like. In addition, even if these adhesiveness is through the silicone oil normally apply | coated to latex rubber, it is not impaired. Furthermore, the jelly 10 can give a natural wearing feeling even when the user wears the condom 20.
In this way, in the condom 20 that fits in the shape of a glans without a semen reservoir without gaps, the wearability can be improved.
Further, during ejaculation, the jelly 10 can be prevented from accumulating locally due to the affinity of the jelly 10 with the semen, and the condom 20 can be made more difficult to break.

The side surface partial sectional view which showed the whole structure of the condom. The perspective partial sectional view which shows the condom in a packaged state.

Explanation of symbols

10 jelly 20 condom 21 glans covered part 22 trunk part 23 opening part 24 ring part

Claims (2)

In the jelly agent that adheres the human body and rubber,
A jelly agent comprising a polyol compound and a carboxyvinyl polymer, wherein the polyol compound is 90.0 to 99.8 weight percent and the carboxyvinyl polymer is 0.1 to 5.0 weight percent . The jelly agent of Claim 1 is apply | coated. The condom characterized by the above-mentioned.

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