The barrier methods of contraception work by preventing the sperm from reaching the egg. The idea of inserting something into the vagina to prevent pregnancy is not new. Such devices called pessaries and those used by the ancient Egyptians.
pessary has been mentioned in the Petri Papyrus 1850 BC. The formula then was a mixture of crocodile dung and honey before been vagina intercourse.
"Interestingly, this mixture not only acted as a barrier to sperm, but there was some broad spermicidal effect. If you have a comfortable crocodile was not available, elephant dung could be used," said Dr. Niels Lauersen, a graduate member of the American Obstetrics and gynecology and Steven Whitney "It's your Body. woman's guide to gynecology"
various formulas pessaries used all over the world. Elephant dung and honey was the preferred combina¬tion India and Africa. Persia during the 10th century, pessaries made of a mixture of rock salt and oil.
However, the most popular pessary found Walter Rendell, a London chemist who lived in the 1800s. Seeing how many people suffered from the burden of too many children, quinine containing Rendell developed a diaphragm which is distributed to customers in his pharmacy.
"The results exceeded expecta¬tions new diaphragm. Requests are logged so quickly that the pessary was marketed commercially in 1886 turn of the century, the product is a best seller around the world. Fact is that until the 20th century, quinine was the only recognized spermicide is a complete security "and Lauersen Whitney added.
popular pessary, new formulas were developed using less irritating materials. Today barrier birth control methods include the diaphragm, vaginal sponge, condom and cervical cap. These are often used in conjunction with chemical barriers such as creams, gels, foams, and suppositories. Let's examine them one by one.
diaphragm and cervical CAP
The diaphragm is a molded rubber cap that blocks the sperm as it covers the cervix and the back of the vagina. It must be integrated into every act of intercourse, and the left side after six to eight hours.
A smaller version of the membrane of the cervical cap, which is limited only by your cervix, but it works the same way. However, unlike the diaphragm must be equipped with the medical device. Women can be difficult to do the same, because the cap is placed deep in the vagina.
The first real diaphragm was created by Aetius of Amida in the 6th century, the fruit of the pomegranate tree. After removing the seeds and the pulp of the fruit, he said Aetius women inserted the hollow end of the vagina before intercourse.
In 1883, Dr. Frederick Wilde, a German doctor, explained that it was a rubber cap can block sperm, but Dr Mensinga Wilhelm, another German who popularized the method. (Next:. Disadvantages of membranes)