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US 6,616,636 B2Granted
Disposable safety syringe which leaves no residual injection
OwnerChoon-Bal Leeinventor
Life of this patent
Estimating the term…
Abstract
The present invention relates to a disposable safety syringe constructed such that the attached needle may be disposed of safely after use, and additionally configured so that all fluid is forced from the barrel of the syringe, and further constructed so that the plunger may not be fully removed from the barrel, preventing the inadvertent loss of fluid that has been drawn into the syringe barrel.
Claims18
A disposable safety syringe, which leaves no residual injection, comprising:
- (a) a syringe barrel, which comprises a connecting tip for a needle base at an upper end of the syringe barrel;
- a barrel finger flange;
- a rear cap receptacle for maintaining sterility at a lower end of the syringe barrel;
- and a plunger stopping protrusion which is slanted toward the upper end of the syringe barrel around the inner diameter of the lower end of the syringe barrel;
- (b) a needle base connected to the connecting tip of the syringe barrel, wherein said needle base comprises a syringe needle connected to an upper end of the needle base;
- and a needle base protrusion at a lower end of the needle base;
- (c) a syringe plunger, which comprises an injection tip connected at an upper end of the plunger;
- a syringe thumb rest at a lower end of the plunger;
- an injection tip protrusion at an upper end of the injection tip;
- and a plunger stopping rib for contacting the plunger stopping protrusion to prevent loss of injection;
- and
- (d) a needle shield, placed outside of the syringe barrel, which comprises a disposable cap receptacle, and a detachment handle at an upper end of the needle shield.
9 more elements
A disposable safety syringe comprising:
- (a) a syringe barrel having a tapered first end connectable to a needle base, and a second end;
- (b) a plunger within the syringe barrel having an injection tip protrusion capable of advancing into and forcing fluid out of the tapered end of the syringe barrel;
- (c) a rear cap receptacle on the second end of the syringe barrel capable of receiving a rear cap;
- (d) a needle connected to the needle base;
- and
- (e) a movable needle shield surrounding the syringe barrel, wherein the movable needle shield exposes the needle in a first position, and covers the needle in a second position.
3 more elements
A disposable safety syringe, comprising:
- (a) a syringe barrel, having first and second ends;
- (b) a needle base connected to the first end of the syringe barrel, said needle base having a needle and one or more needle base protrusions;
- (c) a movable needle shield surrounding the exterior of the syringe barrel, wherein the needle shield has a thread at a first end and exposes the needle in a first position, wherein the movable needle shield is locked in the first position when the needle base protrusions and the movable needle shield thread are fixed in a screw relationship, and covers the needle in a second position, wherein the movable needle shield can be disengaged from the needle base protrusions by rotating the movable shield to be moved from the first to the second position, and wherein the needle shield is in contact with the needle base at both positions.
Dependencies are inferred from the claim text.