Medical device
US6740062B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 22, 2001 |
| Grant date | May 25, 2004 |
| Priority date | — |
| Expiry date | May 22, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/2462
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention relates to an injector device for delivery of liquid from a high pressure source, and also to a method of performing such an injection. The device comprises a storage chamber 6, for the liquid or the liquid precursor components, comprising a storage barrel 16 with at least a section of substantially constant cross-section, defining a storage chamber axis, and a pressure chamber 4 comprising a pressure barrel 10 of substantially constant cross-section, defining a pressure chamber axis, for accommodation of at least one piston therein and having a front end opening 14 for ejection of the liquid. The pressure chamber being of sufficient strength to sustain the liquid pressure. The chambers are separate parts and adapted to cooperate with each other during injection so that the pressure chamber axis and the storage chamber axis substantially coincide, and that the pressure barrel and storage barrel have internal diameters sufficiently similar to allow passage of a resilient piston from the storage barrel to the pressure barrel in a sealing manner. The liquid is transferred from the storage chamber directly into the delivery chamber when the jet injection is to be performe…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.