Puncture rod and laparoscope puncture outfit provided with puncture rod

Abstract

The invention discloses a puncture rod and a laparoscope puncture outfit provided with the puncture rod. The puncture rod comprises a vertically-arranged rod body, a rod head arranged at the lower endof the rod body and provided with a cutting edge, and a rod base arranged at the upper end of the rod body, wherein endoscope channels are formed in the rod base, the rod body and the rod head; the rod body is a metal rod; the rod base is composed of an upper rod base body and a lower rod base body which are detachably connected with each other; the upper rod base body is connected with the rod body in an injection molding mode; the rod head is connected with the rod body in an injection molding mode; the lower portion of the lower rod base body sleeves the rod body; the upper portion of therod head is embedded into the rod body; and the outer surface of the rod head is flush with the outer surface of the rod body. The connecting strength of the rod head and the rod body of the puncturerod is high, the joint is of the rod head and the rod body of the puncture rod very smooth and seamless, the outer surfaces of the rod head and the rod body of the puncture rod are completely flush, the inserting and pulling force of the puncture rod in a puncture sleeve can be reduced, and meanwhile, the possibility that the puncture rod accidentally hurts human tissue is reduced.

Description

technical field [0001] The present application relates to a surgical device, in particular to a puncture rod and a laparoscopic trocar equipped with the puncture rod. Background technique [0002] In the past ten years, China's medical care has gradually been in line with the world stage. The emergence of minimally invasive surgery has allowed more and more patients to obtain more optimized radical treatment of lesions. In minimally invasive procedures, the patient's abdominal cavity is pneumoperitoneum. The establishment of pneumoperitoneum is an important link in laparoscopic surgery, and the laparoscopic trocar is a medical device used to establish pneumoperitoneum. Good air tightness and gas resistance are the basis for establishing pneumoperitoneum. Inject CO2 gas into the human body through the insufflation valve on the trocar to form pneumoperitoneum. [0003] During the puncture operation, in order to observe the puncture situation in real time and prevent the pu...

AI Technical Summary

Problems solved by technology

[0007] 1. If the upper end of the rod head is embedded in the lower end of the rod body, the rod body cannot be used as an injection molding insert (in this case, the rod body must be made of metal) to inject the rod head. This is because the inner hole of the rod seat and the rod The step at the joint of the hole in the body will block the upward core-pulling of the forming core rod, that is, the mold cannot complete the core-pulling action

[0008] 2. If the rod body is made separately, and then the prepared rod head is fixedly inserted inside the lower end of the rod body, it will not only cause deformation of the rod head and affect its puncture performance, but also the connection method of mechanical insertion will inevitably cause a gap between the rod head and the rod body. There is a gap of a certain size between them (the direction of the opening of the gap is horizontally outward). In actual application, the internal tissue of the patient may be stuck in the gap, which will pull the internal tissue and cause great damage to the patient.

Some manufacturers can use injection molding to wrap the rod head around the rod body, but the outer surface of the rod head protrudes from the outer surface of the rod body, and an annular step is formed between the two. During the puncture operation, the annular step is also easy to hurt the patient's body. organize

[0010] In addition, in the traditional scheme, no matter whether the rod head adopts an embedded installation structure or an outsourcing installation structure, there is a problem that the connection strength between the rod head and the rod body is not high

In the process of use, there is theoretically the possibility that the club head will fall off from the club body. Although this possibility is small, if it happens, it may cause serious medical accidents.

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