INTRADERMAL DELIVERY DEVICE AND METHOD

摘要

The subject intradermal delivery (110) device provides for penetration to a fixed depth without requiring special expertise by the user. The device consists of a syringe (112) nested inside an inner shell (114) and an outer shell (116) . A elongated annular channel (120) is formed between the inner shell (114) and the outer shell (116). A housing (118) recieves the syringe (112) and concentric shells in a sliding engagement. A first seal (122) on the distal end of the housing forms a variable length channel in communication with the elongated annular channel via a port formed in the outer shell (116). When the device is applied to the skin, the housing and syringe (112) are slid towards the skin, and the variable length channel generates a vacuum which forces the skin to bulge into the elongated annular channel. As a result, the skin is tensioned across the inner shell to form a substantially planar, taut target area of skin. The taut target area of skin in combination with a stop on the housing determines the insertion depth of the syringe (112).