Dispensing instrument with supported balloon

A - Human Necessities – 61 – M

Patent

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Details

128/99

A61M 3/00 (2006.01) A61B 17/42 (2006.01) A61M 25/10 (2006.01) A61M 31/00 (2006.01)

Patent

CA 1130162

ABSTRACT OF DISCLOSURE: A fluid dispensing instrument having a dispenser operable to place a drug material into the uterine cavity of a female and an expandable balloon cooperating with balloon support struc- ture operable to move the drug material from the uterine cavity into both cana]s of the Fallopian tubes of a female. The instru- ment has a housing carrying a piston and cylinder assembly. The balloon is attached to an elongated flexible tubular probe moun- ted on one end of the housing. The piston and cylinder asembly is operable to fully collapse the balloon prior to insertion through the cervical opening into the uterine cavity. After the balloon is inserted into the uterine cavity, an ampulla storing the drug material is loaded into the instrument. The piston and cylinder assembly is actuated to initially expand the balloon and move a plunger into the ampulla to dispense the drug material into the uterine cavity. The balloon is then fully expanded to move the drug material from the uterine cavity into the canals of the Fallopian tubes. The support structure coop- erating with the balloon prevents the balloon from expanding back through the cervical opening into the vaginal passage. The support structure is a monofilament nylon arranged in inter- secting latitudinal and longitudinal directions about a lower portion of the balloon.

335695

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