| 主权项 |
1. Laparoscopic surgical instrument (1) comprising:
a gripping zone provided with two gripping elements (2,3) hinged to one another by means of a pivot shaft (4); a working tool (30) provided with two jaws hinged to one another by means of a pivot shaft; an actuation mechanism that can transmit movement from the gripping zone to the working tool (30), characterised by the fact that said actuation mechanism comprises:
two push rods (5, 6), wherein the distal end of each of the push rods (5, 6) is hingedly connected to a respective jaw and the proximal end is pivotally connected to a respective substantially annular body, the two substantially annular bodies (7, 8) being able to move longitudinally, such that the push rods (5, 6) can fully rotate about the central axis of the substantially annular body by means of linked rotating means;the two substantially annular bodies being arranged slidably in a swinging movement on an elongated tubular portion through which the two push rods (5, 6) run along, said tubular portion being associated with the rotation means,in which each gripping element (2, 3) is coupled to the two substantially annular bodies (7, 8) by means of two connecting rods, each one of said connecting rods pivotally joined to a substantially annular body, andin which the central axis of the pivot shaft on which both gripping elements are articulated, the central shafts corresponding to the attachment points of the ends of the connecting rods that are attached to such gripping elements are aligned with each other in all operating conditions, therefore the two gripping elements (2, 3) can act together and/or independently of each other for joint and/or separate actions on one or both jaws. |
