Dual blunting needle assembly
AssigneeBecton, Dickinson and Company
InventorKirk D. Swenson
Life of this patent
Estimating the term…
Abstract
A safety needle assembly which is adapted for blunting of both an intravenous puncture tip and a non-patient puncture tip is provided. The needle assembly includes a cannula having a first end with an intravenous puncture tip and a second end with a non-patient puncture tip, and a blunting member in concentric relation with the cannula which includes a first blunt end proximate the intravenous puncture tip of the cannula and a second blunt end proximate the non-patient puncture tip of the cannula. An actuator is in engagement with the blunting member and the cannula. Activation of the actuator causes blunting of the intravenous puncture tip and the non-patient puncture tip by the blunting member. The needle assembly is particularly useful in connection with a blood collection system.
Claims30
A dual blunting needle assembly comprising:
- a cannula having a through-hole for fluid flow therethrough, a first end including an intravenous puncture tip and a second end including a non-patient puncture tip;
- a blunting member in concentric relation with said cannula, said blunting member having a first blunting end proximate said intravenous puncture tip and a second blunting end proximate said non-patient puncture tip;
- and
- an actuator in engagement with said blunting member and said cannula, wherein actuation of said actuator causes relative axial displacement of one of said cannula and said blunting member with respect to the other between a non-blunted position and a blunted position in which said intravenous puncture tip and said non-patient puncture tip are blunted by said blunting member.
A dual blunting safety assembly comprising:
- a) a needle assembly comprising:
- i) an intravenous cannula having a puncture tip and a through-hole for fluid flow therethrough,
- ii) a non-patient cannula having a puncture tip and a through-hole for fluid flow therethrough,
- iii) a blunting member extending between said intravenous cannula and said non-patient cannula and concentrically disposed within said through-hole of said intravenous cannula and said through-hole of said non-patient cannula, said blunting member including a first blunting end for blunting said puncture tip of said intravenous cannula and a second blunting end for blunting said puncture tip of said non-patient cannula, and
- iv) an actuator in fixed engagement with said blunting member and including a displacement mechanism for axial displacement of said intravenous cannula and said non-patient cannula with respect to said blunting member;
- and
- b) a needle holder attached to said needle assembly, wherein actuation of said actuator causes said intravenous cannula and said non-patient cannula to axially displace relative to said blunting member between a first non-blunted position in which said puncture tip of said intravenous cannula extends beyond said first blunting end and said puncture tip of said non-patient cannula extends beyond said second blunting end, and a second blunted position in which said first blunting end extends beyond said puncture tip of said intravenous cannula and said second blunting end extends beyond said puncture tip of said non-patient cannula, thereby blunting said puncture tip of said intravenous cannula and said puncture tip of said non-patient cannula.
Dependencies are inferred from the claim text.