Intradermal delivery device and method
US6971999B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2002 |
| Grant date | Dec 6, 2005 |
| Priority date | — |
| Expiry date | Jun 14, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/46
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The subject intradermal delivery device provides for penetration to a fixed depth without requiring special expertise by the user. The device consists of a syringe nested inside an inner shell and an outer shell. An elongated annular channel is formed between the inner shell and the outer shell. A housing receives the syringe and concentric shells in a sliding engagement. A first seal 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. When the device is applied to the skin, the housing and syringe 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.