Patent ID: 8840542

Claim:
An intracavity balloon catheter, comprising: a flexible catheter having a proximal catheter portion, a distal catheter portion having a distal tip, and a fluid passageway between the distal tip and the proximal catheter portion; and a balloon disposed at the distal end of the catheter, the balloon comprising a balloon lumen, the tip of the flexible catheter extending into the balloon lumen, an exterior balloon surface moveable between a deflated condition and an inflated condition by introduction of up to 80 cc of fluid into the lumen, and a reinforced anterior balloon portion forming a substantially planar surface in the inflated condition, and an isometrically expanding posterior balloon portion having a higher elasticity than the reinforced anterior balloon portion, the posterior balloon portion comprising the majority of the exterior balloon surface, wherein the balloon is configured to expand primarily in a posterior direction, and wherein the balloon has an outer diameter expandable in the inflated condition.