Abstract: A gaseous dispensing instrument and method for dispensing carbon dioxide gas into the fallopian tube canals of a female is disclosed. The instrument uses a manually operable pump vented to the atmosphere that communicates with a balloon secured to the end of a cannula. Upon insertion of the deflated balloon and cannula through the cervical opening into the uterine cavity, the balloon is expanded and partially withdrawn against the inner walls of the uterine cavity to seal the same. A chamber is charged with carbon dioxide, and upon the balloon being in place in the uterine cavity, gas is released into the uterine cavity and fallopian tube canals through a separate passage in the cannula.

Abstract: A dispensing apparatus for placing a settable, fluid-like material in the uterine cavity and moving the material from the uterine cavity into the Fallopian tubes of a female. An elongated disposable dispensing probe carries an expandable member, and a housing connected to the probe has a piston and cylinder structure and a container for storing the material. Material and expansion drive mechanisms are connected to an actuator selectively controlled by an operator. By operating the actuator or control means, the operator causes the material to be dispensed into the uterine cavity while at the same time sealing the cervical entrance to the cavity, and causing the expansion means to expand, substantially filling the uterine cavity and forcing the dispensed material into the canals of the Fallopian tubes.