US 11,751,909 B2
Retractable instrument
Philipp Schaller, Stein Am Rhein (CH); Reto Grueebler, Greifensee (CH); and Thomas Linsi, Schaffhausen (CH)
Assigned to Alcon Inc., Fribourg (CH)
Filed by Alcon Inc., Fribourg (CH)
Filed on Jun. 17, 2020, as Appl. No. 16/903,809.
Claims priority of provisional application 62/865,343, filed on Jun. 24, 2019.
Prior Publication US 2020/0397476 A1, Dec. 24, 2020
Int. Cl. A61B 17/34 (2006.01); A61F 9/007 (2006.01); A61B 17/00 (2006.01)
CPC A61B 17/3496 (2013.01) [A61B 17/3421 (2013.01); A61B 17/3498 (2013.01); A61F 9/007 (2013.01); A61B 2017/00199 (2013.01); A61B 2017/00973 (2013.01); A61B 2017/3454 (2013.01); A61B 2217/005 (2013.01); A61B 2217/007 (2013.01)] 19 Claims
OG exemplary drawing
1. An apparatus for use in an ophthalmic surgical procedure, comprising:
a housing having a proximal end and a distal end with a valve bay disposed between the proximal end and the distal end;
a cannula assembly that extends from the distal end of the housing, wherein the cannula assembly comprises:
an outer tube; and
an inner tube positioned in the outer tube, wherein the inner tube comprises an elongated portion and a cannula tip attached at a distal end of the elongated portion;
a valve disposed in the valve bay of the housing, wherein the valve comprises a valve tubular coupled to the inner tube for adjusting flow through the inner tube; and
an actuator coupled to the valve and the inner tube for moving the cannula tip from an extended position to a retracted position in the outer tube, wherein the valve tubular provides a biasing force to the inner tube in the retracted position to move the inner tube back to the extended position upon release of the actuator.