Patent ID: 9687633
Date: 2017-06-27
CPC Classifications: A61M,Y10T

Claim:
1. A needle safety device comprising: a needle connected to a needle hub, said needle comprising a needle shaft and a change in profile near a needle tip; and a needle guard having a body defining an interior cavity, a distal wall comprising a distally facing wall surface and a proximally facing wall surface at a distal end of the body having a distal opening, and a proximal wall at a proximal end having a proximal opening having the needle shaft passing through both the distal opening and the proximal opening in a ready to use position in which the needle tip is exposed; wherein the change in profile has a larger cross-sectional dimension than a dimension of the proximal opening for engaging the proximal opening in a protective position; wherein the needle guard comprises at least two biasing members including a first biasing member and a second biasing member and wherein the second biasing member is located closer to the distal end than the proximal end, the second biasing member has a first position when the needle tip is exposed and a second position when the needle tip is located inside the interior cavity of the needle guard; wherein in the first position the second biasing member is biased by the needle shaft and wherein in the second position the second biasing member is not biased by the needle shaft and covers at least part of the distal opening of the distal wall to prevent the needle tip from re-emerging out the distal opening; and wherein the second biasing member has a free end and a fixed end and wherein the fixed end of the second biasing member is located closer to the distal end than the free end is to the distal end.