SURGICAL SUTURING INSTRUMENT WITH REPLACEABLE CASSETTES WITH STAPLES Russian patent published in 2016 - IPC A61B17/72 

FIELD: medicine.

SUBSTANCE: group of inventions refers to surgical instruments, namely to surgical cutting and stapling elements. Surgical instrument comprises a handle assembly, an elongated rod assembly and cutting element. Extended rod assembly is mounted on the handle assembly and protrudes from it, and also comprises elongated central element and launching tube. Elongated central element comprises a distal end intended for detachable connection of the end effector. Launching tube is able to axially move along the elongated central element and interact with the start-up system, which is supported by handle assembly to make launching tube selectively move on the central element so that the launching tube can selectively move in axial direction from inactive position, in which distal end of central element is detachably connected with part of end effector, to engagement position, in which the distal part of launching tube holds the part of end effector engaged with distal end of central element. Launching tube is able to perform further selective axial displacement in position of activation, selectively applying at least one activation motion to the end effector connected to distal end of central element. Cutting element is movably supported inside the elongated rod and interacts with the system of sliding knife. System of knife extension is supported by handle assembly and is able to selectively move the cutting element from initial position, in which tissue cutting edge formed on the element distal end is located in the distal end of launching tube, to cutting position, when tissue cutting edge is located distally in relation to the distal end of launching tube. Surgical set for use with interchangeable end effectors different in size, each having a movable stop and supporting cassette with clips, comprises the above mentioned surgical instrument, first adapter and second adapter. First adapter is detachably connected to the distal end of launching tube and intended to actuate the stop on end effector of the same size, attached to the distal end of central element, after activation of launching tube in at least some of its working activation positions. Second adapter is detachably connected to the distal end of launching tube and intended to actuate the other stop on end effector of another size, attached to the distal end of central element, after activation of launching tube in at least some of its activation positions.

EFFECT: inventions provide optimum working force for making a number of staples and cutting tissue.

11 cl, 243 dwg