Delivery device with invertible diaphragm

A device for delivering an item, comprising:

• a self-contained chamber comprising a single flexible compressible wall that substantially surrounds and seals the chamber, wherein the chamber contains a sufficient amount of a gas to provide a pre-deployment pressure within the chamber, and wherein pressure in the chamber is increasable to a deployment pressure by compressing a portion of the flexible walls of the chamber;
• wherein a portion of the flexible wall forms a flexible diaphragm that is invaginated into the chamber at the pre-deployment pressure to form a receptacle for holding an item for delivery from the receptacle, and the invaginated diaphragm is evaginated for delivering the item from the receptacle when the pre-deployment pressure is increased to the deployment pressure;
• wherein the chamber comprises a distal portion that forms a delivery portion from which the item is to be delivered from the device and a proximal portion that is wider than the delivery portion and forms a hand grip for the device, wherein the receptacle invaginates into the distal portion of the chamber at the pre-deployment pressure;
• wherein the distal end of the device is dimensioned to be insertable into an external orifice of the human body, and the hand grip is sufficiently wide not to be insertable into the external orfice;
• and
• wherein the delivery portion and the hand grip are inclined at an angle to one another whereby the hand grip provides an angled handgrip to be grasped by a user for inserting the delivery portion into an orifice of a body.