Nail head component and endoscopic surgery suturing and cutting device

Abstract

The invention provides a nail head component, which comprises a nail cartridge frame, a nail anvil, a triggering block, a connecting tube, a knife pushing rod and a safety mechanism, wherein a nail cartridge is arranged on the nail cartridge frame in a detachable mode; the nail anvil can be closed in a pivotal mode relative to the nail cartridge; the triggering block is movably arranged in the nail cartridge; the far end of the connecting tube is connected to the near end of the nail cartridge frame; the knife pushing rod is movably arranged in the connecting tube; a first clamping part is arranged at the near end of the knife pushing rod; a knife is arranged at the far end of the knife pushing rod, and the knife, pushed by the knife pushing rod, can push the triggering block to move; the safety mechanism comprises a pressing block and a pushing block; a second clamping part is arranged on the pressing block, and the pressing block, relative to the connecting tube, can rotate between a first position and a second position; when the pressing block is on the first position, the knife pushing rod is under a locked state, and when the pressing block rotates to the second position, the knife pushing rod is under an unlocked state; the pushing block, relative to the connecting tube, can move between a third position and a fourth position in a longitudinal direction; and the pressing block is pushed to rotate from the first position to the second position when the pushing blocks moves from the third position to the fourth position.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a nail head assembly with a safety mechanism for preventing misfiring and a laparoscopic surgery sewing device with the nail head assembly. Background technique [0002] Suturing and cutting devices are widely used in wound suturing, internal tissue suturing and cutting in surgical operations. 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; in a narrow sense, minimally invasive surgery refers to surgery performed under an endoscope. The operation under the endoscope generally only needs to open several small holes on the patient's body, and the excision, suture tissue and auxiliary instruments are penetrated into the patient's body through the small holes to perform the operation. Minimally invasive surgery brings little trauma to patients, and ...

AI Technical Summary

Problems solved by technology

However, before the staple cartridge assembly is installed on the instrument platform of the endoscopic stapler, the pusher rod may move during assembly, packaging and transportation, so that the pusher rod pushes the cutter to move, resulting in false firing of the instrument, and The displacement of the pusher rod will also cause the instrument platform to not be installed correctly with the pusher rod, resulting in the failure of normal use of the device

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