Injection apparatus and method of using same
US6309374A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 3, 1998 |
| Grant date | Oct 30, 2001 |
| Priority date | — |
| Expiry date | Aug 3, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/341
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention relates to an apparatus and method for using the apparatus for injecting an agent into a tissue, particularly into thin tissues such as the sclera of the eye. The invention provides an apparatus and method for effectively imbedding a needle into a tissue at a predetermined penetration approach angle and penetration distance thereby reducing the risk of penetrating the full thickness of the tissue. The invention includes a support element and a needle guide platform disposed on the support element with an external support surface and a channel extending therethrough and terminating in an aperture at the support surface. A needle disposed in the channel is axially movable along an axis of injection through the channel. The needle is movable from a first retracted position to an extended position corresponding to the penetration distance, along the axis of injection. The axis of injection forms a penetration approach angle of up to about 60.degree. with a tangent of the support surface at a point of intersection of the axis of injection with the projection of the support surface across the aperture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.