Passive needle guard for syringes
US6623459B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 5, 2000 |
| Grant date | Sep 23, 2003 |
| Priority date | — |
| Expiry date | May 5, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/59
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A passive needle guard includes a body having proximal and distal ends and a cavity therein for receiving a medicine cartridge, and a shield slidable on the body between retracted and extended positions for exposing and covering, respectively, a needle extending from the body, the shield being biased towards the extended position. Deflectable latch members extend from the shield that include catches for engaging catches on the body for holding the shield in the retracted position. A syringe is inserted into the needle guard, and a needle of the syringe inserted into a patient. A plunger of the syringe is depressed to inject medication and to deflect the latch members to disengage the catches and release the shield, whereupon the shield automatically advances to the extended position. In the extended position, cooperating detents on the shield and body engage one another, thereby preventing subsequent retraction of the shield.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.