Safety vacuum syringe for blood sampling conformed to ergonomics
US6511440B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Jan 22, 2001 |
| Grant date | Jan 28, 2003 |
| Priority date | — |
| Expiry date | Jan 27, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/3228
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An ergonomic safety vacuum syringe for sampling blood includes a hollow barrel, a reduced lining tube and a vacuum tube. The barrel has a reduced inlet disposed on the top end thereof and a guiding slit disposed at a flank side. The reduced lining tube is installed in the barrel and includes an eccentric reduced portion disposed on the top end of the reduced lining tube and has an opening at the lower end. A needle head is engaged on the eccentric reduced portion and a through guiding hole is disposed at the center of the eccentric reduced portion to position a reverse Z-shaped needle therein, a lower needle tip of the needle is positioned at a central axis in the reduced lining tube, a press plate is positioned in the guiding slit. The vacuum tube is disposed in the barrel, and contains an elastic plug that is covered on an opening at the upper side of the vacuum tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.