A transverse endoluminal stapler with compact structure

Abstract

The present application provides a transverse endoluminal stapler with a compact structure, including an end effector, a connecting outer tube, and a driving assembly at least partially arranged in the connecting outer tube. The assembly includes a drive housing for driving the staple cartridge housing; the staple cartridge housing is arranged in the staple cartridge accommodating chamber of the drive housing, and the staple cartridge accommodating chamber is provided with an opening for the staple cartridge housing to be connected to the central axis of the outer tube. One end of the positioning pin is arranged in the accommodating chamber of the staple cartridge, the staple cartridge is provided with a positioning pin hole for the positioning pin to pass through, and the other end of the positioning pin is connected with the positioning pin driving mechanism. The structural installation method of the original transverse stapler is improved, the assembly is more compact, and the radial dimension of the transverse stapler is effectively reduced, so that it can enter the laparoscopic surgery channel with a small inner diameter, so that it can be used in the cavity Operation.

Description

technical field [0001] The invention relates to a medical device, in particular to a transverse intracavity stapler with a compact structure. Background technique [0002] The transverse cutting anastomosis / stapler is mainly used for the creation of anastomotic stoma and the closure of the stump or incision in the digestive tract reconstruction and organ resection surgery where it is difficult to expose the surgical field. In the horizontal cutting stapler in the prior art, the positioning pin is set on the staple cartridge, and the longitudinal installation perpendicular to the central axis of the stapler needs to be verified along the staple cartridge during installation, and the installation position of the staple cartridge needs to be additionally provided with a transmission mechanism for connecting with the staple cartridge. The locating needles are docked and matched so that the driving mechanism can drive the locating needles. For example, application number 20151035...

AI Technical Summary

Problems solved by technology

[0003] Transversal cutting anastomosis / stapler is often used in open surgery, open surgical field of view is better, but there are disadvantages such as large wounds and slow recovery

The traditional method of laparoscopic surgery is to make three small incisions on the patient's body, each inserting a pipeline-shaped working channel, and all subsequent operations are performed through these three channels; and then the special lengthened surgical instruments are used to complete the surgery under the monitor of the TV, which is the same as open surgery. Compared with open surgery, it has a greater advantage in achieving the same surgical effect. However, according to the limitations of the structure and installation method in the prior art, the staple cartridge provided with positioning pins has a large longitudinal gap. size, and the staple cartridge needs an additional fixing mechanism to prevent it from falling off in order to be stably installed on the end effector, so it is not suitable for small-sized laparoscopic surgery channels

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