Thumb press frangible feature for re-use prevention
US8784376B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2012 |
| Grant date | Jul 22, 2014 |
| Priority date | — |
| Expiry date | Dec 4, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/5073
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Syringe assemblies having a passive disabling system to prevent reuse are provided. According to one or more embodiments, the syringe assembly comprises a barrel, plunger rod and detachable thumb press wherein the plunger rod further comprises flexible locking petals that lock the plunger rod within the barrel and one or more frangible connection or break point at the proximal end of the plunger rod disposed either inside the thumb press or immediately adjacent to the thumb press to separate the thumb press from the main body of the plunger rod when a user applies sufficient proximal force to the plunger rod after it has been locked within the barrel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.