GreyMedical® Introducing Cohen Acorn Cannulas are surgical instruments that are used in gynecological procedures in combination with a uterine tenaculum in uterine manipulation procedures. It features a hollow, rigid tube for instillation of a dyed fluid into the uterus to determine a perforation. Also, Cohen Acorn Cannula is easy to clean and can be reused in clinical settings. Addit... https://grey-medical.com/product/cohen-acorn-cannula.html