US 12,376,881 B2
Safety shields for elongated instruments and related systems and methods
Jay Muse, Salt Lake City, UT (US); and Ryan S. VanDyke, Layton, UT (US)
Assigned to Piper Access, LLC, Salt Lake City, UT (US)
Filed by Piper Access, LLC, Salt Lake City, UT (US)
Filed on Sep. 29, 2022, as Appl. No. 17/956,106.
Application 17/956,106 is a continuation of application No. 15/914,964, filed on Mar. 7, 2018, granted, now 11,484,341.
Claims priority of provisional application 62/525,663, filed on Jun. 27, 2017.
Claims priority of provisional application 62/600,857, filed on Mar. 7, 2017.
Prior Publication US 2023/0026800 A1, Jan. 26, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 17/34 (2006.01); A61B 17/16 (2006.01); A61B 17/00 (2006.01); A61B 90/00 (2016.01)
CPC A61B 17/3496 (2013.01) [A61B 17/1617 (2013.01); A61B 17/3472 (2013.01); A61B 17/3476 (2013.01); A61B 17/3494 (2013.01); A61B 2017/00398 (2013.01); A61B 2017/00477 (2013.01); A61B 2017/00876 (2013.01); A61B 17/1633 (2013.01); A61B 2017/347 (2013.01); A61B 2090/0801 (2016.02)] 20 Claims
OG exemplary drawing
 
1. A system comprising:
a cannula assembly comprising:
a cannula hub; and
a cannula attached to the cannula hub, the cannula being configured for introduction into a mammalian body and defining a lumen;
an elongated instrument comprising a distal tip and a recess that is proximally spaced from the distal tip, the elongated instrument being positioned within the lumen of the cannula; and
a shield coupled with each of the cannula hub and the elongated instrument while in an unlocked state, the shield comprising:
a collar at a distal end of the shield that defines an opening through which the elongated instrument extends while the shield is in the unlocked state; and
an arm that comprises a distal end connected to the collar and a proximal portion, the proximal portion being maintained in a laterally deflected state by the elongated instrument such that the arm engages the cannula hub when the shield is in the unlocked state,
wherein the shield is configured to:
remain in the unlocked state while permitting proximal movement of the elongated instrument relative to the shield as the elongated instrument is retracted from the lumen of the cannula; and
transition from the unlocked state to a locked state when the recess of the elongated instrument is moved proximally to a position at which the proximal portion of the arm automatically moves laterally to enter the recess and the arm thereby disengages from the cannula hub.