Surgical stapling loading unit with stroke counter and lockout

• Main Author: MURTHY ARAVALLI, Anantha Venkata Varaha Lakshmi Narasimha Srinivasa
• Format: Patent
• Language: English
• Published: 16.02.2017
• Subjects: DIAGNOSIS; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; MEDICAL OR VETERINARY SCIENCE; SURGERY

SURGICAL STAPLING LOADING UNIT WITH STROKE COUNTER AND A surgical loading unit (10), which comprises: an elongate outer frame (12) defining a longitudinal axis (k) and having proximal and distal ends (14, 16); an end effector (300 mounted to the distal end (16) of the outer frame (12); a drive (22) at least partially disposed within the outer frame (12) and operatively coupled to the end effector (300), the drive (22) adapted for longitudinal movement through a plurality of sequential firing strokes to operate the end effector (300); a rotatable counter (32) mounted to the outer frame (12) and adapted for rotational movement about the longitudinal axis (k), the rotatable counter (32) having visual indicators for providing visual indicia corresponding to a number of firing strokes completed by the drive (22); a counter actuator (52) mounted to the drive (22) and dimensioned to engage the rotatable counter (32) to cause rotational movement of the rotatable counter (32) through an arc segment of rotation during each firing stroke of the drive (22); and a cam actuator (54) mounted to the drive (22) and dimensioned to operatively engage the counter actuator (52) to cause release of the counter actuator (52) from the rotatable counter (32) upon longitudinal movement of the drive (22) through each successive return stroke. C-4-