/kloc-More than 0/000 years ago, ancient Egyptians began to make condoms from the bladder or cecum of goats, pigs and other animals. Since then, condoms have been used to prevent diseases and infections.
Some mural paintings of condoms, which were created more than 0/00 years ago in/kloc, were found in the cave of KanBariou in Dordogne, southern France, which is considered as the earliest evidence of condom use in Europe.
/kloc-At the end of 0/5, Columbus discovered the new continent, and sailors brought syphilis back to Spain from America, and syphilis spread in Europe. Faropis invented a condom made of linen, and conducted condom use experiments among 1 100 men. None of them are infected with syphilis.
/kloc-in the 6th century, there was a record about condoms in the experimental records of Lopis, an anatomist at the University of Padua. He first publicly described the experiment of using condoms to prevent diseases, which is the earliest written record of condoms found so far.
/kloc-In the 7th century, the physician condom of King charles ii of England invented the male condom. Its raw material is the caecum of lamb, and the best product thickness can reach 0.038 mm (latex condoms are generally 0.030 mm). At that time, it was a great event that sensationalized the whole world. The doctor's condom was knighted by this invention, and Britain earned a lot of foreign exchange.
/kloc-around 0/640, the oldest condom in the world was born. It was made of swim bladder and animal intestines, and it 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. These 10 condoms were found in Dudley Castle near Birmingham, England, and were once exhibited in a sex exhibition held in the Netherlands. They are dry because of their age.
/kloc-in the 0 th and 8 th centuries, the Japanese used two kinds of condoms, one is soft and made of leather; The other is made of tortoise shells or horns.
1725 to 1798 Casanova, the prodigal son, introduced the details of trying contraceptive methods in his autobiography. He described that he tried to hollow out half a lemon peel and use it as a primitive uterine cap.
From 65438 to 0766, many shops began to make leaflets and advertisements about condoms.
1838, Friedrich Wilde, a German doctor, opened a small uterine cap to cover the cervix during menstruation. This contraceptive method has never been widely used, but the world-famous "Wilde hat" has become the predecessor of modern uterine caps.
1839, Charles Goodyear invented rubber vulcanization technology and put it into practical use, producing rubber condoms, intrauterine devices, pudendal irrigators and uterine caps.
At the beginning of 1930, the manufacturing technology of condoms was innovated again, and liquid latex replaced the traditional rubber sheet, which is still the basic raw material of condoms.
In the 1970s, various contraceptives appeared in the United States, such as condoms, contraceptive sponges, irrigators and uterine caps.
In 1990s, the latest progress was made in condom materials. Condoms made of single polyurethane are twice as tough as latex and can be made into thinner and more sensitive condoms.
On April 201May 14, scientists developed hydrogel condoms, which are more enjoyable than not wearing condoms.