Multiple use disposable injection pen
US9421334B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2012 |
| Grant date | Aug 23, 2016 |
| Priority date | — |
| Expiry date | Nov 27, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/582
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A medication injection pen (51) includes a housing (1) and a dose set knob (2) having at least one internal tooth (22). A brake member (5) has a plurality of axially extending splines (52). A driver or setback member (9) includes at least one external tooth (92) engaging the at least one internal tooth (22) of the dose set knob (2) and at least one ratchet arm (96) engaging the plurality of axially extending splines (52). The driver (9) is prevented from rotating with the dose set knob (2) while moving axially with the dose set knob (2) during dose setting and dose correcting, and the driver (9) rotates with the dose set knob (2) during an injection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.