Balloon catheter over-inflation protection device

Abstract

Abstract There is provided a device (20) for preventing over-inflation of a balloon catheter (10). In one embodiment, a movable wall (48) is attached to a spring (50) for defining a pressure release chamber (46) between the movable wall (48) and a pressure release port (44) of the device. The movable wall (48) is biased in the direction of a pressure source so that increases in pressure above a threshold pressure move the movable wall (48) a variable distance from the pressure release port (44). Over-inflation of the catheter balloon (32) is prevented because pressures exceeding the desired maximum cause the movable wall (48) to move to a position in which the pressure release chamber (46) is placed in communication with a vent (52). There is also provided a method for preventing balloon catheter over-inflation.

Inventors

• 👤 Allan Willis

Bibliographic Details