US 12,419,784 B2
Ultrasonic surgical aspiration needle assembly with molded hub
Brian D. McCary, Clayton, MO (US); and Todd Smith, Sharpsburg, GA (US)
Assigned to BAUSCH & LOMB INCORPORATED, Rochester, NY (US)
Filed by BAUSCH & LOMB INCORPORATED, Rochester, NY (US)
Filed on Aug. 4, 2022, as Appl. No. 17/881,170.
Application 17/881,170 is a division of application No. 15/142,932, filed on Apr. 29, 2016, granted, now 11,484,441.
Prior Publication US 2022/0409432 A1, Dec. 29, 2022
Int. Cl. A61F 9/007 (2006.01)
CPC A61F 9/00745 (2013.01) 21 Claims
OG exemplary drawing
 
1. A surgical needle assembly for attachment to an ultrasonic handpiece comprising:
an elongated metal cannula having a distal end and a proximal end;
a hub insert molded onto the cannula generally towards the cannula proximal end and formed from a material having an ultimate strength at least twice a peak cyclical stress force at a joint between the elongated metal cannula and the hub when the surgical needle assembly is in use with the ultrasonic handpiece;
wherein the hub material has a stiffness sufficient to limit a motion of the elongated metal cannula to less than 1.5 times an expected peak to peak stroke length when the surgical needle assembly is in use with the ultrasonic handpiece; and
wherein the hub includes structure for mating attachment to the ultrasonic handpiece.