Abdominal wall puncture device for laparoscope based on photo-excitation laser detection positioning

Abstract

The invention discloses an abdominal wall puncture device for a laparoscope based on photo-excitation laser detection positioning. The puncture device is characterized in that a puncture needle is arranged in a sleeve, wherein a detection unit composed of a light transmitter, a light receiver and a light baffle is arranged at the front end of the puncture needle; and a control center and an early warning signal generator are arranged at the tail part of the puncture needle, and a connection line is connected between the detection unit and the control center and the early warning signal generator. In the invention, a central controller judges whether the light intensity received by the light receiver is lower than a set threshold and starts the early warning signal generator if the light intensity is lower than the set threshold to prompt puncture success, and thus possible injuries of organs and blood vessels caused by blind puncture are avoided.

Description

technical field [0001] The invention relates to a medical device, more specifically to a laparoscopic abdominal wall puncture device based on light excitation, detection and positioning. Background technique [0002] With the development of laparoscopic technology, many operations that previously required laparotomy have been gradually replaced by laparoscopic surgery. A puncture must be performed before laparoscopic surgery, and a tube-shaped Trocar is inserted into the abdominal wall to provide an operating channel for the laparoscope and surgical instruments. If the puncture depth is not enough, the surgical channel cannot be opened. If the puncture is too deep, the internal organs and blood vessels in the abdominal cavity may be damaged, and in severe cases, the patient's life may be endangered. Therefore, it is very important to accurately judge the depth of abdominal wall puncture. [0003] At present, abdominal wall puncture is performed blindly, and the operator ju...

AI Technical Summary

Problems solved by technology

Because there is a potential cavity between the abdominal wall and the peritoneum, and the peritoneum is soft and the tension is extremely low, it is easy to cause misjudgment when judging the puncture depth solely by the change of the resistance of the puncture needle during puncture; Adjusting the direction and applying force intermittently will cause large fluctuations in the pressure at the needle tip, and sometimes the pressure at the needle tip will disappear due to the operation of withdrawing the puncture device. There is a risk of misjudgment in positioning operations

In addition, factors such as fat and thin patients, abdominal muscle thickness, intra-abdominal adhesions, and abdominal wall tissue moving with the puncture needle also increase the difficulty of judgment and prolong the puncture time.

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