Staple head assembly of linear suturing and excising device

Abstract

The invention discloses a staple head assembly of a linear suturing and excising device. The staple head assembly comprises a staple cartridge rack, a staple anvil, a connecting pipe, and a knife pushing rod positioned in the connecting pipe, wherein the side face of the near end of the knife pushing rod is pivotally provided with a safety block, and a boss is correspondingly arranged on the staple cartridge rack or the connecting pipe; under the initial state, the front end face of the far end of the safety block is abutted against the boss and limits the movement of the knife pushing rod and the safety block; under the working state, the cocking surface of a cocking ejector rod is abutted against the rear end face of the near end of the safety block and generates acting force for driving the safety block to pivotally rotate so as to enable the front end face of the far end of the safety block to be separated from the boss for relieving safety. The staple head assembly has the beneficial effects that a safety mechanism positioned in the staple head assembly is provided, so that the conditions that the staple head assembly is mistakenly cocked when the staple head assembly is not completely mounted in place, and normal use of an instrument is influenced by forward moving of the knife pushing rod in the transportation process of the staple head assembly are prevented, the structure is simple and effective, and the staple head assembly is very practical.

Description

technical field [0001] The invention relates to a linear seam cutter, in particular to a nail head assembly of the linear seam cutter, which belongs to the technical field of medical instruments. Background technique [0002] Surgical linear suture cutters are widely used for wound suturing, internal tissue suturing and cutting. With the development of surgery, minimally invasive surgery has become more and more popular. In a broad sense, surgery that can reduce trauma is called minimally invasive surgery, and it is generally believed that minimally invasive surgery in a narrow sense refers to surgery performed under an endoscope. The operation under the endoscope generally only needs to open a few small holes on the patient's body, and the excision, suturing tissue and auxiliary instruments are inserted into the patient's body through the small holes for surgery. Minimally invasive surgery brings little trauma to patients, and patients can recover in a short period of tim...

AI Technical Summary

Problems solved by technology

[0005] However, since the instrument needs to be transported for a long distance after the assembly is completed, it is not ruled out that after the instrument is shaken or impacted, the pusher bar moves forward, causing the staples to be fired

Or, when the device is fired for the first time, the doctor needs to replace the nail head assembly, but in view of his possible lack of experience, the device may be fired when the nail head assembly is not fully installed, which will also cause damage to the device or cause medical accidents

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