Stimulation device including a pressure field generator and air passage

A sexual stimulation device, comprising:

• a first opening configured to stimulate an erogenous zone of a user’s body;
• a cavity in fluid communication with the first opening;
• a second opening disposed on an opposite side of the sexual stimulation device relative to the first opening;
• a tube extending from the cavity to the second opening;
• a flexible wall connected to the tube, defining at least a part of the cavity;
• and
• a drive unit coupled to the tube and configured to mechanically drive the tube to reciprocate as a whole to compress and expand the flexible wall;
• wherein alternating pressure variations relative to an ambient pressure at the first opening is generated due to compression and expansion of the flexible wall so as to provide pneumatic pulse stimulation to the erogenous zone of the user’s body,
• wherein the pneumatic pulse stimulation is thereby produced by the reciprocation of the tube as a whole while the tube remaining substantially undeformed and the compression and expansion of the flexible wall.