Locking syringe with integrated bias member
US8412310B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2009 |
| Grant date | Apr 2, 2013 |
| Priority date | — |
| Expiry date | Oct 29, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/31508
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A locking syringe with an integrated bias member, for delivering medical fluids at high pressure, can include a housing, a shaft, a piston, a cap assembly, a bias member, and a locking member. A distal end of the housing can interface with a patient delivery apparatus. A piston can be connected to the distal end of the shaft and can include a peripheral sealing surface that can slidably engage the inside surface of the housing to form a movable seal. The cap assembly at the proximal end of the housing can engage the shaft. A base cap can secure the piston within the housing. The bias member can have a distal end coupled to the piston and a proximal end restrained, such as to help pressurize the internal cavity. The user-actuatable locking member can user-selectively engage and inhibit unwanted movement of the shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.