Control device for surgical instrument

Abstract

The invention provides a control device for a surgical instrument. The device comprises an actuator, an intermediate connecting body and a controller, wherein the intermediate connecting body is connected to a far end of the controller; and the actuator is connected to a far end of the intermediate connecting body. The steering control device applied to the surgical instrument ensures that a direct control assembly operates the same percussion trigger to make an actuator of the instrument execute different operation instructions when being in two different states. The disadvantage that a surgery operator cannot operate the instrument conveniently or risks of injuring patients are potential in the operation process in the conventional instrument design is overcome.

Description

technical field [0001] The surgical instrument of the present invention particularly relates to a surgical stapler; in particular, it relates to a control device for enabling actuators of the surgical instrument to perform different actions when the same firing trigger is fired through a direction control mechanism. Background technique [0002] The working principle of the surgical stapler is to clamp the tissue by closing the two corresponding jaws, and then push out the metal nails in the stapler's staple bin to form and suture the tissues together. In some staplers, a cutting knife is also installed to cut off the stitched tissue. [0003] The stapler with the above functions includes an actuator, an intermediate connecting body and a controller. The actuator is composed of an anvil assembly, a staple cartridge assembly and a driving assembly. The nail anvil assembly includes a nail forming surface, and the nail forming surface includes a plurality of rows of nail groo...

AI Technical Summary

Problems solved by technology

The disadvantages of this technical solution are: the operation of the retraction mechanism requires the operator to use both hands to operate at the same time, so that the operator relaxes the control of other surgical instruments; Shaking, causing the clamped tissue or organ to shift and damage

In the anastomotic process of some thick tissues, due to the thick wall of the organ, after the actuator clamps and closes the tissue, the tissue will produce a large reverse elastic force on the anvil assembly and the staple cartridge assembly, and in most cases it will As a result, the anvil assembly or the staple cartridge assembly undergoes elastic or even plastic deformation. During the retraction process, the drive assembly of the actuator not only needs to overcome the increased frictional resistance between the drive assembly, the anvil assembly, and the staple cartridge assembly, but also overcome the The huge resistance to the plastic deformation of the anvil assembly and the staple cartridge assembly will further increase the shaking amplitude of the distal end of the actuator and the pulling force on the tissue or organ during the operation of the retraction trigger, increasing the risk of tissue or organ damage

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