Injection device
US4798595A · kind A · utility
Inventors
Key dates
| Filing date | Apr 29, 1987 |
| Grant date | Jan 17, 1989 |
| Priority date | — |
| Expiry date | Apr 29, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/26
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention relates to an injection arrangement. This is characterized in that it comprises an injection needle (1) and a base plate (8). The needle (1) is curved so that at least one part of it exhibits a circular arc with a certain radius of curvature. The needle (1) is executed at one end with a solid, cutting point (2). The needle (1) has a central duct (3) which is closed in the area ahead of the tip (2) of the needle, and along the area in the form of a circular arc it has a number of openings (6) communicating with the duct (3). The base plate (8) has two curved ducts (11,12) passing through the plate (8) at an angle to one another and with the same radius of curvature as the needle (1). The base plate (8) also supports a cradle (13), to which the needle (1) is attached, which cradle is able to move in the base plate in such a way that the needle (1) is able to move in a normal plane to the plane of the base plate (8) in a reciprocating fashion about the center of the radius of curvature. During forward movement of this kind, the tip (2) of the needle (1) moves from a first end position down through the first curved duct (11) and then up through the second duct (12…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.