Device for injecting a substance into a body, especially human or animal
US6217557A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 1998 |
| Grant date | Apr 17, 2001 |
| Priority date | — |
| Expiry date | Nov 16, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M25/06
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A device for injecting a substance into a body, especially human or animal, comprising a cannula or needle member (4-6) and a dosing device (8) for supplying a determined amount of substance (10) to a target area (1), the dosing device having an attachment (7) for the cannula or needle member. The invention is characterised in that the cannula or needle member (4-6) comprises a tube (4) and a catheter (6) which is displaceable in the tube, the outer diameter of the catheter being smaller than the inner diameter of the tube, thereby forming a gap between the catheter (5) and the tube (4), essentially over the entire length of the tube (4), in that the proximal portion of the catheter is attached to the dosing device (8), and in that the distal portion (9) of the catheter, in connection with said injection, is arranged adjacent to the distal end (12) of the tube (4) and forms a fluid-tight seal therewith.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.