Patent ID: 8795246

Claim:
A reduced pressure therapy system comprising: a suction device comprising a suction chamber and a slidable seal therein, wherein the suction device comprises a superior surface, an inferior surface, a proximal end and a distal end, a minimum chamber size configuration and a maximum chamber size configuration; a magnet coupled to the slidable seal; and an alarm device configured to retain the suction device in multiple pre-determined orientations, wherein the alarm device comprises first and second sensors, wherein the first sensor is configured to detect the maximum chamber size configuration when the suction device is in a first pre-determined orientation with the proximal end of the suction device closer to the first sensor than the second sensor, and wherein the second sensor is configured to detect when the same suction device is in the maximum chamber size configuration when in a reversed, second pre-determined orientation with the proximal end of the suction device closer to the second sensor than the first sensor; and a notification mechanism configured to generate an alert according to the location of the magnet.