A Karman cannula is a soft, flexible tube that doctors use during Manual Vacuum Aspiration (MVA). It's a simple process: the cannula is gently inserted into the uterus and attached to a portable syringe. The contents of the uterus are safely removed when the cannula is gently aspirated. Its flexible material and rounded tip do not cause injury during the process. GSTC makes these sizes 4mm to 12mm, so doctors can safely and comfortably choose the right size for each patient. For more details - https://www.gstc.com/product/karman-cannula/