Injection system and method
AssigneeSalar Surgical Ltd
InventorsSam Golo Evans, Duncan Fitzsimons
Life of this patent
Estimating the term…
Abstract
A device for a hypodermic needle comprises a connector for connecting to a hypodermic needle, a sheath (22) which in use surrounds the hypodermic needle and a biasing device (24) between the connector and the sheath. The sheath is moveable between a first position into which it is biased by the biasing device and a second retracted position against the force of the biasing device, so that in use, the tip of the hypodermic needle is covered in the first position but a defined length of the hypodermic needle is exposed in the second position. The device also sets the position of the angle of the hypodermic needle and locks the sheath over the needle after use.
Claims15
A guidance device for delivering a therapeutic agent into an eye with a hypodermic needle, the guidance device comprising:
- a connector for connecting the guidance device to a hypodermic needle;
- a sheath that surrounds the hypodermic needle during use of the guidance device;
- a biasing device between the connector and the sheath;
- and
- a distance gauge to position the hypodermic needle a set distance from a fixed location, the distance gauge comprising an arm mounted on the sheath and connected to a convex side of a C-shaped tip,
- wherein:
- during use of the guidance device, the sheath is moveable between a first position into which the sheath is biased by the biasing device and a second position in which the sheath is retracted against the force of the biasing device;
- in the first position a tip of the hypodermic needle is covered by the sheath;
- and
- in the second position a defined length of the hypodermic needle is exposed.
Dependencies are inferred from the claim text.