Fine needle aspiration safety syringe
AssigneeMedisys Technologies, Inc.
InventorGary E. Alexander
Life of this patent
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AssigneeMedisys Technologies, Inc.
InventorGary E. Alexander
Estimating the term…
The invention comprises a needle aspiration safety syringe having a barrel, a plunger, a retractable needle, and a delayed engagement mechanism. The needle is functionally connected to the plunger by the delayed engagement mechanism such that when the plunger is retracted from an initial extended position, the needle does not retract immediately. The needle provides passage into the fluid receiving cavity, such that retraction of the plunger causes tissue fluid to flow from a target tissue through the needle and into the fluid receiving cavity. Further retraction of the plunger causes the delayed engagement mechanism to engage, whereupon the needle can be withdrawn completely into the fluid receiving cavity, such that the sharp end of the needle is no longer exposed. After the needle withdraws completely into the fluid receiving cavity, the needle cannot exit the fluid receiving cavity, such that the sharp end of the needle poses no danger of sticking a user or patient. Fluids can be stored in the fluid receiving cavity, and can be discharged through a port by depressing the plunger. When the plunger is depressed to discharge collected tissue fluid, the needle deforms inside the barrel.
A safety syringe for collecting aspirated matter comprising:
A safety syringe for collecting aspirated matter comprising:
A safety syringe for collecting aspirated matter comprising:
Dependencies are inferred from the claim text.