Syringe Development Partners L.l.c.

Other

William B Pressly, Sr

Charles A Vaughn, Sr

Thomas Richard Ellis

G Samuel Brockway

A syringe apparatus and process for using the same is provided, the syringe apparatus having a barrel, a plunger movable within the barrel, a needle assembly attached to an end of the barrel and having a passageway therethrough, a deformable base positioned within the barrel, flexible supports included on the deformable base, a spring within the passageway of the needle assembly, a hollow needle passing through the passageway, an enlarged head on the needle, and a rupturable web on an end of the plunger, whereby when the plunger moves through the barrel toward the needle assembly, a fluid can be moved from the barrel through the hollow of the needle, and continued movement of the plunger flexes the supports and moves the deformable base downwardly until such time a sufficient force is imparted to the rupturable web by the enlarged head to tear the web, the deformable base then releasing the needle due to force applied by the spring to project the needle into the interior of the plunger. Seals are provided for making a liquid impervious seal on both ends of the syringe after the needle is retracted. The seal on the end left open by needle retraction is a closing member which can be used to seal off the opening without placing a user's hands in front of the opening. The syringe includes indicia that is revealed upon needle retraction to label the syringe as a biohazard. A syringe apparatus using a deformable base, enlarged needle head and needle assembly of an alternative embodiment is also provided wherein sacrificial supports in the needle assembly are utilized and severed by the deformable base.

Safety syringe

A hypodermic syringe is provided having a barrel with a movable plunger therein to inject a fluid through a hollow needle thereof which is housed within a passageway of a needle assembly that is attached to the barrel by ultrasonic welding means or other permanent attaching means. Positioned between sacrificial supports in the needle assembly and the barrel is a deformable base. The deformable base houses an enlarged head of the needle which is in contact with energy storage means within the passageway of the needle assembly. The plunger has a rupturable boot thereon which, upon completion of an injection, contacts a deformable base forcing it downward and severing a sacrificial support means within the needle assembly thereby permitting the base to move the enlarged head of the needle downward, until it is blocked by the passageway. Further movement of the base forces the enlarged needle head from the base and into contact with the rupturable boot. Movement of the base continues until the rupturable boot is ruptured by the enlarged head of the needle and the enlarged head of the needle is released from the base thereby triggering a projection of the needle into a hollow portion of the plunger by transfer of energy from energy storage means. Once inside the plunger, the needle is trapped by its enlarged head within the plunger, and the plunger is locked into the body of the syringe.

A novel hand truck lift is provided comprising an elevating assembly which is extendable downwardly to easily enable the hand truck lift to be used to move objects supported thereon up and down stairs.

Growing community of inventors

Greer, SC, United States of America

William B Pressly, Sr