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US 5,207,658 AGranted
Prick resistant medical needle for intravenous injections
OwnerHoward J. Rosen, Mark A. Roseninventors
Life of this patent
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Abstract
A medical intravenous injection needle which resists accidental skin pricks is disclosed. The needle tip is designed to be sharp enough to easily puncture medication bottle membranes and intravenous tubing but resists puncturing the skin. Illustratively, the tip has a flattened or rounded edge to provide the appropriate penetration ability.
Claims15
A syringe needle for administering injections directly into an IV tubing comprising:
- a tube with a throughgoing bore, having a tapered tip formed on a first end thereof, said bore connecting an opening formed on said tapered tip of said tube, with an opening at a second end of said tube,
- said tapered tip having a contact surface area along which said needle may contact said IV tubing, said contact surface area of said tapered tip extending in two orthogonal directions perpendicular to a longitudinal axis of said tube, and said needle tip contact surface area being sharp enough to pierce said IV tubing but not sharp enough to pierce human skin.
A syringe comprising:
- a cylinder for holding a fluid, said cylinder having an inlet/outlet port formed at a first end of the cylinder;
- a plunger slidably positioned in a second end of the cylinder for drawing said fluid into and discharging the fluid from the cylinder;
- and
- a prick resistant needle removably mounted within said inlet/outlet port of the cylinder for puncturing medicine bottle membranes and intravenous tubing comprising:
- a tube with a throughgoing bore having a tapered tip formed at a first end thereof, said bore connecting an opening formed on said tapered tip of said tube, with an opening at a second end of said tube,
- said tapered tip having a contact surface area along which said needle may contact said IV tubing, said contact surface area of said tapered tip extending in two orthogonal directions perpendicular to a longitudinal axis of said tube whereby said contact surface area is sharp enough to pierce intravenous tubing and medicine bottle membranes but not sharp enough to pierce human skin;
- a hub mounted co-axially on said second end opposite said tip having an outer diameter larger than the second end and approximately equal to the inner diameter of the inlet/outlet port for mounting the second end of the needle within the inlet/outlet port.
4 more elements
A syringe comprising:
- a cylinder for holding a fluid, said cylinder having an inlet/outlet port formed at a first end of the cylinder;
- a plunger slidably positioned in a second end of the cylinder for drawing said fluid into and discharging the fluid from the cylinder;
- and
- a prick resistant needle mounted within said inlet/outlet port of the cylinder for puncturing medicine bottle membranes and intravenous tubing comprising:
- a tube with a throughgoing bore, having a tapered tip formed at a first end thereof and a second end fixedly mounted within said inlet/outlet port, said bore connecting an opening formed on said tapered tip of said tube, with said inlet/outlet port,
- said tapered tip having a contact surface area along which said needle may contact said IV tubing, said contact surface area of said tapered tip extending in two orthogonal directions perpendicular to a longitudinal axis of said tube whereby said contact surface area is sharp enough to pierce intravenous tubing and medicine bottle membranes but not sharp enough to pierce human skin.
3 more elements
A syringe needle for administering injections directly into an IV tubing comprising:
- a cylindrical tube with a throughgoing bore extending along a longitudinal axis of said tube, having a tube wall thickness delineated by said bore and an outer surface of said tube, said tube having a tapered tip on a first end thereof, said bore connecting an opening formed at said tapered tip of said tube with an opening at a second end of said tube,
- said tapered tip having a contact surface area along which said needle may contact said IV tubing, said contact surface of said needle tip, extending in a first direction orthogonal to said longitudinal axis a first distance approximately equal to said tube wall thickness and extending in a second direction orthogonal to said longitudinal axis a second distance at least equal to an outer diameter of said tube.
Dependencies are inferred from the claim text.