Back to results
US 9,750,529 B2Granted
Safety stylet
AssigneeBecton, Dickinson and Company
InventorsAnnica Wayman, Michael Meehan, Christina D'Arrigo, Douglas Tyukody
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeBecton, Dickinson and Company
InventorsAnnica Wayman, Michael Meehan, Christina D'Arrigo, Douglas Tyukody
Estimating the term…
A stylet for insertion within a cannula interior of a needle is disclosed. The stylet includes a solid elongated shaft having a proximal end adapted for engagement with a needle hub, and a distal end having a surface modified profile. The surface modified profile increases the penetration force required to penetrate human skin. The ratio of the penetration force of a stylet having an unmodified distal end to the stylet having a surface modified profile is at least 1:1.4, or greater. The surface modified profile may be a roughened surface, a buffed surface and/or a blunted surface. The surface modified profile may include a yieldable material disposed over at least a portion of the distal end. A needle assembly having a stylet having a surface modified profile is also disclosed.
A safety stylet for insertion within a cannula of a needle, comprising a solid elongated stylet shaft having a proximal end adapted for engagement with a needle hub, and a distal end comprising a dull planar contact surface, wherein the contact surface has a surface modified profile, wherein the surface modified profile comprises a roughened surface.
A safety stylet for insertion within a cannula of a needle, comprising a solid elongated stylet shaft having a proximal end adapted for engagement with a needle hub, and a distal end comprising a dull contact surface, wherein the contact surface has a surface modified profile, wherein the surface modified profile comprises a blunted surface.
Dependencies are inferred from the claim text.