How big is the egg retrieval needle for IVF?

The specifications of egg retrieval needles are mainly 16G, 17G, 18G, 19G, 20G and 21G. At present, there are three types of egg retrieval needles commonly used: 17G, 18G and 19G. The larger the model, the thinner the tube diameter. The length of the egg retrieval needle is about 35 cm, the choice of puncture needle depends on the number of follicles and the difficulty of puncturing the ovaries and other factors. The larger the diameter of the puncture needle, the greater the risk of puncture injury and the stronger the pain of the patient.

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