Automatic safety syringe
US6712788B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Aug 1, 2002 |
| Grant date | Mar 30, 2004 |
| Priority date | — |
| Expiry date | Aug 1, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/3235
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An automatic safety syringe comprising a syringe body, hollow on the side and open at the front and rear; and a plunger sliding inside the syringe body with an injection stroke extending from a retracted syringe-filling position to a forward syringe-emptying position, the plunger being provided at the rear with a shaft that can be operated manually and brought out of the syring body through the rear end thereof. An injection needle integral with a needle carrier is egageable with the fore end of the syringe body. A hooking device is connected to the shaft of the plunger, to hook the needle carrier when the shaft is at the end of the injection stroke. An automatic device causes automatic retraction of the shaft of the plunger when the injection has been completed. a locking device is operatively connected to the shaft to block forward movement thereof when it is in the retracted position after intervention of the automatic device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.