Prefilled syringe for use with power injector
US5535746A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 1994 |
| Grant date | Jul 16, 1996 |
| Priority date | — |
| Expiry date | Mar 29, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/14566
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A plastic syringe adapted for use with power injector systems comprises a cylindrical barrel for receiving a liquid, a plunger axially reciprocable within the barrel for discharging the liquid therefrom, a discharge extension at the distal end of the barrel terminating in a discharge outlet, at least one radially outwardly extending mounting lug located at or near the outer proximal end of the barrel, the lug having a distal surface having first and second ends defining a constrained portion of the barrel, and the lug being crown shaped such that the center of the distal surface of the lug is distally offset from the ends of the lug. In another embodiment, the syringe comprises a cylindrical collar adapted to fit over and attach to the proximal end of the cylindrical barrel, and the crowned lug is located at or near the outer proximal end of the collar. The crowned lug reduces stresses on the lug during injection, thus providing improved reliability and enabling the syringe to be fabricated of lower modulus autoclavable plastics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.