Abstract: A balloon is disclosed for expanding an orifice. The balloon comprises a hollow body having a head. The body is closed at a distal end and open at a proximal end. The head extends from the distal end. The balloon also comprises a hollow neck positioned between the open proximal end and the distal end of the body. In the balloon, a wall thickness of the neck is greater than a wall thickness of the head. In a variation, the balloon can be configured such that, when the balloon is inflated, the head expands in a radial direction greater than in the longitudinal direction and a diameter of the body remains approximately constant during inflation. Also disclosed is a system for expanding an orifice. The system includes such a balloon and an inflation device for inflating the balloon. Also disclosed is a kit comprising the system and a container. Further, disclosed is a mould and a method for forming the balloon.

Abstract: A device (10) for stretching the foreskin of a subject is disclosed. The device has a body (10) having a passage (14) that extends through the body (10) to a distal end (18). The distal end (18) is adapted to receive a balloon (B). Fluid may be introduced through the passage (14) to cause the balloon (B) to expand. A flow regulating member (20) is positioned across the passage (14) to selectively close the passage (14) to fluid flow.