Uterine cannula and pelvic support for gynecological laparoscopy

摘要

The instrument 10 for gynecological laparoscopy includes a cervical funnel 12 and an intra-uterine cannula 14 disposed axially within the funnel 12. Funnel 12 includes a hollow tube 16 having a proximal end 18 adapted to be inserted into the vagina of a patient. A hollow cone-shaped member 20 is provided at the proximal end 18. The cannula 14 has an outer sheath 58 provided at one end with a threaded cone 60 that threadingly engages the cervix to seal the uterus. An inner manipulation shaft 62 passes through the sheath 58 and cone 60 to allow manipulation of the uterus. The instrument 10 is supported by a support 92 that would be typically attached to an operating table or bed 96. Support 92 allows the position of the instrument 10 to be varied at will by the surgeon thus alleviating the need of the surgeon or a pelvic assistant to physically support the instrument 10. Seal 192 in the shape of a conical frustum is placed over the cone-shaped member 20 prior to insertion into the vagina. The seal 192 forms a seal about end 196 against the vaginal wall and about end 194 on the tube 16 to prevent loss of pneumoperitoneum during surgery.