Pen needle assembly
US8287501B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 13, 2009 |
| Grant date | Oct 16, 2012 |
| Priority date | — |
| Expiry date | Jan 13, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/347
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A pen needle assembly is provided herein having a hub with a distal end and a proximal end; a needle fixed to the hub and having a distal end, for insertion into a patient, and a proximal end; an inner shield disposed proximally of the hub; a spring disposed between the inner shield and the hub and configured to bias the hub distally; an outer shield with a distal end, a proximal end, and a tubular body at least partially encircling a portion of the needle with at least portions located radially outward further from the needle than the inner shield such that the outer shield at least partially encases the hub, the needle, the inner shield, and the spring; and a releasable retaining assembly configured to releasably retain the hub in a first locked state against the biasing of the spring. The distal end of the needle is covered by the outer shield with the hub being in the first locked state. Upon release of the releasable retaining assembly, the hub moves under force of the spring to an unlocked second state. In the unlocked second state, the distal end of the needle extends distally from the distal end of the outer shield. Advantageously, with the arrangement of the subject invent…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.