Condom contraceptive knowledge

In front of women, men feel tall and powerful. They think they own the whole world, but in fact, the space that belongs to them completely is only 50cm3.

Interesting historical story

The use of condoms can be traced back to ancient Egypt. Since then, condoms have been protecting men from diseases and infectious diseases.

Types of condoms

A couple was pregnant and went to consult a doctor: "Doctor, we used condoms, but we were still pregnant." The doctor asked, "How to use it?" The couple replied, "We will do as you demonstrated and put condoms on our thumbs." This is just a joke, but it unreasonably reflects people's misunderstanding of condoms.

The use of condoms can be traced back to ancient Egypt. Since then, condoms have been protecting men from diseases and infectious diseases.

Condoms appeared in the life of ancient Egyptians more than 2000 years ago BC. At that time, it was called "condom", and its function was not to prevent diseases and contraception. It is used as an ornament just like jewelry worn by women. Men usually hang on their bodies, which is a symbol of wealth and status.

In BC 1000, the ancient Egyptians began to make condoms from the bladders or cecums of goats, pigs and other animals. Since then, condoms have been used to prevent diseases and infections. Some condom murals made more than 100 years ago were found in the Cumbales cave in Dordogne, southern France, which is the earliest evidence that Europeans use condoms at present.

/kloc-syphilis spread in Europe at the end of 0/5, and the use of condoms was officially recorded in the literature of this period. Gabriel Fallopis, an Italian anatomist, invented a protective cover made of linen, and conducted experiments on more than 1 100 men. None of them was infected. At this time, the main function of condoms is to prevent the spread of sexually transmitted diseases rather than contraception.

/kloc-the oldest condom in the world in the 6th century was born around 1640. It is made of swim bladder and animal intestines and has a history of more than 300 years. One end of the condom is sewn tightly with silk thread, and the opening at the other end can be locked to prevent slipping. According to records, this kind of condom is difficult to come in handy immediately when needed, because it can only be used after soaking it in warm milk overnight.

/kloc-there are two possible explanations for the name of the condom in the 0/7th century: the first one comes from the word Condus (Latin "container"); The second theory is that Dr. Conde, a physician from charles ii, England, is a physician. He made a condom for the king from animal offal. Camden first cut sheep intestines into appropriate lengths, dried them in the sun, and then softened them with oil and wheat bran until they became thin and elastic.

/kloc-in the 0/8th century, condoms made from animal intestines became widely known and quickly became popular. At this time, condoms are not only used to prevent diseases, but people begin to pay attention to their efficacy in contraception and really use them as male contraceptives. Since then, "condom" has been nicknamed "condom". At the same time, the Japanese made two kinds of condoms: a soft condom made of leather and a hard condom made of tortoise shell and horns.

/kloc-In the middle of the 0/9th century, industrialists Goodyear and Handdock invented a revolutionary rubber vulcanization treatment method, which can mass-produce more reliable and cheaper rubber products such as condoms, making rubber condoms boil for a while. At this time, you can use the "hot dip molding" method to shape condoms. The condom molding machine is soaked in latex solution, which has become the standard method of condom production-this method is still the basis of most condom production. "Vulcanized rubber method" refers to the method or process of treating rubber with sulfur to make rubber dissolve when heated. This method can turn rubber into a highly elastic material. From this time on, rubber condoms began to replace condoms made of linen and animal intestines.

/kloc-with the development of science and technology, the production technology of condoms has been continuously improved, and latex condoms have become popular. The first latex condom was invented by Dutch physicist Dr Aleith Yabut in 1883. Because of the use of thin and soft latex, condoms are safer, more comfortable and more popular.

At the beginning of the 20th century, the manufacturing technology of condoms had a revolutionary development again-latex condoms replaced rubber condoms.

At the end of the 20th century, new technology greatly improved condoms, making condom manufacturing more advanced, far better than the technology used by our ancestors. The latest technological development is an innovation brought by Durex, which replaces latex with a unique raw material-polyurethane. The manufactured condom is not only thinner than before, but also twice as tough as before, so users can keep the best sensitivity during use.

50 cubic centimeters healthy

Condom is given a double negative label: its connection with immoral sexual behavior affects the use of condoms by married couples; The medical community's view of supporting fertility has made the spread of sexually transmitted diseases more and more widespread. With the progress of the times, the development of science and medical technology, people's family concept and sexual concept have changed, and the expression, norms and interaction between condoms and human beings have also changed. It participates in human daily life with unique cultural significance and becomes a part of our culture, and its health mission is getting heavier and heavier.

Birth control is a thing of the past.

/kloc-At the beginning of the 8th century, the contraceptive function of condoms was confirmed in Europe. /kloc-In the 20th century, Britain launched a birth control campaign to control population growth. Although the decline of birth rate in Europe and America in the early 20th century proved the effectiveness of this sport, it can't be entirely attributed to condoms. Because the most popular contraceptive methods are interruption of sexual intercourse, safe period and uterine sleeve. The contraceptive rate of using condoms correctly is 95%, not 100%. This is one of the reasons why people don't choose condoms directly. Compared with the latter three ways, the role of condoms in sexual intercourse was coaxed off the stage less than three minutes after the appearance.

At the beginning of the 20th century, the development of medical technology hindered the popularization of condoms. Contraceptive pills, birth control surgery and cervical ring are still the protagonists of "bed exercise". Even those who defend morality believe that the popularity of condoms will encourage immoral sexual behavior. Therefore, whether it is official or private, the role of condoms is only in a wait-and-see state.

In the mid-20th century, the first birth peak appeared after the founding of New China, and the contradiction between unplanned population growth and planned national economic development began to appear. In the following two decades, China established "family planning, population control and population quality improvement" as a basic national policy. In China, condoms began to walk from behind the scenes to the front, and gradually became a member of people's life in Center Stage.

Compared with the whole world, the contraceptive function of condoms is still neglected. Even during the Second World War, the use of condoms in the army tended to protect soldiers from sexually transmitted diseases, making them unable to fight. There is even a promo saying: Don't forget-put it on before you put it in.

The guards of the love castle

The popularity of condoms should be attributed to unprotected sex and even to "germs". Most people don't like this way of "scratching through clothes", which accelerates the spread of the virus. At the end of the 20th century, AIDS began to spread, and condoms began its glorious life. Because it is the only external product that can reduce the infection of sexually transmitted diseases and AIDS. People began to see condoms in bars, supermarkets and grocery stores. At the same time, with the improvement of production technology, condoms are not only thinner than before, but also more resilient. Picky users are beginning to like this kind of "little clothes". Of course, safety and comfort play a great role.

Reasons for popularization

According to the survey of well-known condom brands, there are three aspects to promote condom popularization: first, premarital sex is becoming more and more common; Second, people who have sex for the first time are younger; Third, women increasingly feel that they should take the initiative to protect themselves sexually. The demand for condoms by the second group of people makes it more and more shiny. Looking at it from another angle, there are two reasons why people don't use condoms: First, some people describe the use process as "wearing a raincoat to take a bath", which reduces sexual pleasure and thus reduces the quality of sexual life; Second, the initial promotion of condoms is to prevent men from contracting sexually transmitted diseases and protect high-risk groups susceptible to AIDS and sexually transmitted diseases. Homosexuality, homosexuality, extramarital sex, promiscuity and sex workers are all directly related to condoms, so users will be suspected of embarrassment.

Condom, as its name implies, means safety. It is used to protect the health of both parties and avoid the threat of bacterial infection. At the same time, it prevents semen from entering women's bodies and plays a role in contraception. If used correctly, the effective rate of contraception is above 98%. Experts believe that "the biggest role of condoms is not contraception, but safety. It can not only ensure the safety of sexual life, but also prevent and treat some diseases, such as ED (erectile dysfunction), effectively prevent and treat immune infertility, reduce the incidence of female cervical cancer, and prevent semen allergy.

As a guard of the love castle, condoms are competent and absolutely loyal. As the owner of the castle, we should also treat it correctly and make it serve mankind better.

Get out of the misunderstanding of condom use

Reproductive health care experts believe that choosing the right size condom is helpful to sexual harmony. It's the first time to use a medium condom. If it doesn't fit, use a large condom or a small condom.

Choice of condoms

The style of condoms is changing quietly, and the appearance of sexy condoms reflects the trend that people demand higher and higher quality of sexual life. Fruity, chocolate, mint and other condoms make people feel another kind of sexual interest; Floating condoms, threaded condoms and ultra-thin condoms have brought different enjoyment to sexual life, and even started to be colorful.

Model selection

Many men think that buying a box of condoms is enough, whether it suits them or not. Nowadays, with the development of science and technology, the quality of condoms is getting better and better, and the size and model have been strictly divided. The basic shape of modern condoms is cylindrical with a seminal vesicle at the top. According to international standards, the longest condom is 198 mm, and condoms sold in the market are divided into four types: large, medium, small and extra small. Large size is 35 mm in diameter, medium size is 33 mm, small size is 3 1 mm, and super-small size is 29 mm Reproductive health care experts believe that choosing appropriate condom size is helpful to sexual harmony. It's the first time to use a medium condom. If it doesn't fit, use a large condom or a small condom.

Correct use of condoms

This joke is used to describe some people who use condoms by mistake: in order to let a conservative farmer with eight children have birth control, the family planning staff in the village told him, "Wearing condoms can help you not to have children." The farmer readily agreed, because he was afraid of vasectomy. However, three months later, his wife became pregnant again. The family planning staff is puzzled: "Didn't you use the condom we gave you?" The farmer replied innocently, "I wore it, and I have been urinating for two days." I really can't help but cut off the first half. "

Misunderstanding of condom use

1, measure the length before buying condoms. There are three kinds of condoms in China, with a large diameter of 35 mm, a medium diameter of 33 mm and a small diameter of 31mm. In most cases, the most suitable size for men in China is medium.

But in clinic, we often see that some men use too tight condoms, which hinders the blood circulation of the penis, leads to hypoxia of tissues and nerves in the penis, partial damage of the cavernous body, and even the penis is weak and can't be lifted. However, some people buy too large condoms, which easily leads to condom shedding and semen outflow, reducing contraceptive effect.

Therefore, when men choose condoms, it is best to measure the diameter of penis first, including weak state and erect state. When measuring, the room temperature should be about 25 degrees Celsius, calm down and take a proper rest. Lift the penis flat by hand, hold one end of the hard ruler against the pubic symphysis, and the other end is subject to the external orifice of glans urethra, which is the normal length of the penis. During erection, after the penis is completely erect, wrap a thin thread around the middle of the penis, then measure the length of the thin thread to get the circumference of the penis, and then divide it by 3. 14 to get the diameter of the penis, which is the closest data.

2. Don't ejaculate with ultra-thin sleeve. At the same time, the thickness of condoms also has a great influence on men's psychology. The thicker the condom, the lower the sensitivity of male penis in sexual life, the greater the distance between himself and his lover, and the worse the sense of nature. Just like everyone doesn't like to wear thick gloves to catch things.

There are three kinds of condoms: ultra-thin, thin and ordinary. Among them, the thickness of ultra-thin condom is 0.03 mm, the thickness of ordinary condom is 0.04-0.06 mm, and the thin condom is in between. A study in the United States once showed that for every 0.0 1mm decrease in thickness, men's comfort would increase by 20%, so it is no wonder that men especially like ultra-thin models.

Contraceptive rate

When condoms are used correctly, the contraceptive rate is 95%, not 100%, which is proved by more and more unplanned pregnancies. When using condoms, the nails were accidentally cut, and they were not given up in time or even thrown away for fun, leading to unexpected pregnancy. Such behavior is easy to increase the psychological burden of women, endanger women's health and even directly affect the feelings of both sides.

Lubricant selection

Some men artificially apply lubricant to condoms in order to increase sexual pleasure. Such as glycerol, can increase the brittleness of condoms and make them more prone to rupture; Saliva is neither hygienic nor conducive to lubrication; Toothpaste can not only play a lubricating role, but also the tiny particles in toothpaste can wear condoms. Some people think that clotrimazole ointment can not only lubricate but also prevent diseases. In fact, clotrimazole ointment is not water-soluble, only effective for mold infection, but ineffective for bacterial and viral infection. Therefore, clotrimazole ointment can neither be used as a lubricant nor play a role in preventing diseases.

profit

Reproductive health experts say that men must use condoms correctly, in addition to protecting themselves, it should also be out of a responsibility. Contraceptive failure is nothing more than the following situations: first, when wearing condoms carelessly, nails or jewelry cut the condom; Second, the sexual organs are not lubricated enough, and the female vagina is too dry, which may easily lead to condom rupture. Both sides can avoid this situation by adding "foreplay"; Third, improper use of lubricants, some mineral oil or vegetable oil can weaken the strength of latex condoms within five minutes; Four, when storing condoms, should be placed in a cool and dry place, to avoid direct sunlight and high temperature. Fifth, the air in the seminal vesicle is not emptied when used, and the condom is not close to the penis; 6. after ejaculation's penis is in an erect state and fails to hold the root in time to quit; Seven, the repeated use of condoms greatly reduces the safety. All types of condoms are disposable.

Magical use of condoms

1, a considerable number of diseases, such as chrysanthemum suppository and hemorrhoid ointment, need to use finger gloves. But often the gloves provided by this drug are quite rough and have great side effects. If you use condoms, all problems can be solved.

2. Condom aprons can also be used to bind collected paintings and sketches. , durable.

3. Safety clothing can be filled with water, put in frost, and taken out as a cooling ice pack for patients with fever when necessary.

4. It can be used as a tool for fetching water in the field and is easy to carry when not in use. It is said that a condom can hold 1 liter of water.

5. It can be used to catch mice. The method is: Inflate the condom, put it in a bucket with a slippery and steep wall, and then put what the mouse likes to eat on it. When the mouse passed by, it was tempted by delicious food and jumped into the bucket. Because condoms are swollen and thin, they are easy to break, and mice's claws are extremely beneficial. Whenever a mouse touches it, the condom will break. As soon as people hear the noise, a mouse becomes a turtle in a jar. And the mouse is easy to catch at this time, because it has been stunned by the sound of blasting and can't move.