Patent ID: 8147445

Claim:
An enema dispenser, comprising: a bottle comprising a bottle opening, the bottle having a volume of 30 mL to 300 mL; a nozzle, attached to the bottle at the bottle opening, and comprising a distal opening and a tip region, the tip region having a length of 3 cm to 5 cm; a liquid in the bottle, the liquid comprising an aqueous solution or suspension; and a valve including a membrane having a single slit and a thickness of 0.50 mm to 0.90 mm; wherein at least a portion of the liquid can be dispensed through the distal opening when the bottle is compressed with a force of at most 15 Newtons; the bottle comprises a flexible material; the membrane comprises a polymer having a hardness of 40 to 80 Shore A; the membrane has a diameter of 1.5 cm to 2.5 cm; and the single slit has a length of 40-80% of the membrane diameter.