Disposable double pointed injection needle, and an insulin injection system comprising a disposable double pointed injection needle
US8075522B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2005 |
| Grant date | Dec 13, 2011 |
| Priority date | — |
| Expiry date | Mar 28, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/59
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A disposable double pointed injection needle has a needle hub to which a thin needle cannula is permanently fasten and which needle hub can be mounted on to a syringe comprising a dose setting and injection mechanism and a cartridge containing a liquid medicine to be injected subcutaneously into a human body. The needle hub is provided with a safety shield guided on the outside surface of the needle hub. The safety shield is urged in a direction away from the needle hub by a spring located between the needle hub and the safety shield. The safety shield has a number of protrusions guided in guiding tracks on the outside surface of the needle hub. The guiding tracks are designed such that the safety shield during injection is moved towards the needle hub, and after injection is moved away from the needle hub by the spring and locked in an irreversible position where the safety shield covers the needle cannula and prevents accidental needle stick injuries.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.