Flexible drive element, end effector and surgical operating instrument

Abstract

The invention relates to the technical field of medical instruments and discloses a flexible drive element, an end effector and a surgical operating instrument. The flexible drive element comprises a head portion, a tail portion and a plate stress bending portion, the plate stress bending portion between the head portion and the tail portion and comprises a plurality of metal filaments and a flexible seal sleeve, and the flexible seal sleeve covers the plurality of metal filaments which extend along the length direction of the flexible drive element. In the technical scheme, the plurality of metal filaments enable the stress bending portion to have certain rigidity and flexibility and can be relatively fixed by the flexible seal sleeve, and accordingly surface friction of the flexible drive element can be reduced, and rigidity of the flexible drive element can be further improved. The flexible drive element is capable of effectively transferring driving forces required by instruments and less prone to destructive permanent deformation during turning, triggering and retracting, and accordingly difficulty in operation of surgical operating instruments is greatly lowered for surgeons, and simplicity and convenience in a machining process are achieved due to reduction of a welding procedure.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a flexible driving element, an end effector and a surgical instrument. Background technique [0002] A cutting and stapler is a surgical instrument often used in surgery, which has the functions of cutting and suturing tissues. like Figure 1a As shown, the cutting and stapler mainly includes: a handle 100, an elongated body 200 and an end effector 300, wherein the handle 100 is used to be held and operated by the operator to provide control and driving, and the far side of the handle 100 (during operation The side close to the operator is the proximal side, and the side away from the operator is the distal side) is connected to the end effector 300 through the elongated body 200, and the end effector 300 performs cutting and suturing on the tissue under the driving and control of the handle 100 . The end effector can be divided into two types according to its struc...

AI Technical Summary

Problems solved by technology

[0004] The defect of the prior art is that when the flexible driving element is assembled and used, the solder joints between the sheets are prone to desoldering, which will cause the flexural separation between the sheets, and the flexible driving element may be due to The rigidity is not enough to effectively transmit the driving force required by the instrument, or it will cause destructive permanent deformation (referring to the deformation of the elastic body under the action of external force, and the deformation cannot be restored when the external force disappears), affecting the driving stroke, which will increase the surgeon's The difficulty of operating surgical instruments, and the processing technology of this flexible driving element is also relatively complicated

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