Patent ID: 6193690
Filing Date: 2001-02-27
Classification: A61M

Abstract:
A device for latching and releasing a biased needle comprising:an elongated chamber having a first end and a second end;a biased spring needle with a first end extending past said first end of said flash back chamber and a second end fixed near said second end of said flash back chamber;an inclined plane latch with a first end, a second end and a third end, wherein a first latch inclined plane is formed on said third ends and wherein said incline plane latch is fixed to said biased spring needle;a latch foundation with a first end, a second end and a third end, wherein said latch foundation is fixed to said flash back chamber at said third end of said latch foundation, wherein a second latch inclined plane is formed at said first end of said latch foundation and wherein said second latch inclined plane is engaged with said first latch incline plane;an anti rotation slot formed in said third end of said inclined plane latch;a needle release button with a first end and a second end, wherein an anti rotation guide is formed in said second end of said needle release button and is disposed into said anti rotation slot formed in said inclined plane latch to prevent said inclined plane latch from rotating when said needle release button is depressed causing said latch inclined plane to be pushed away from and disengaged with said foundation inclined plane thus releasing said inclined plane latch from said latch foundation thereby allowing said biased spring hard needle to be withdrawn completely into said flash back chamber.