A kind of trocar puncture needle for laparoscopic liver resection

Abstract

The invention discloses a cannula puncture needle for laparoscopic liver resection. The cannula puncture needle comprises a main body, a handle, a sleeve cylinder, a gas valve, a sleeve pipe, a thread, an outlet, a puncture needle, a supporting mechanism and a connecting mechanism. The thread is formed at the rear end of the outer diameter surface of the sleeve pipe, and the supporting mechanism is mounted on the outer diameter of the thread. After the puncture needle is inserted into the body of a patient, a knob is rotated and thus a ball bearing inside a through hole moves on the thread, then the supporting mechanism can move downward, the skin of the patient is pressed down by a fixing cylinder at the lower end of a connecting rod, a silicone layer is arranged at the bottom of the fixing cylinder, provides stable support after being contacted and is not easy to slip, a ventilation effect is achieved through a gas port and a venting hole, the fixing effect is good, the connecting mechanism is arranged at a position where the lower end of the handle and the puncture needle are connected, an insertion rod in the middle of a rod body is pushed out, and insertion blocks in two setsof fixing rods can be separated from insertion slots, and thus a convenient and quick effect is achieved; during installation, the two sets of fixing rods are connected and the insertion rod is inserted directly simply to facilitate the reuse of the handle.

Description

technical field [0001] The invention relates to the related field of medical devices, in particular to a cannula puncture needle for laparoscopic liver resection. Background technique [0002] The so-called laparoscopic hepatectomy is a minimally invasive treatment for liver diseases. Its treatment concept is the same as that of traditional surgery. The ultimate goal is to remove the lesion. In the abdominal cavity, the doctor puts the surgical instruments in by watching the TV screen, and performs the operation under the guidance of the camera, while the doctor's hand is always outside. The effect is the same as that of the laparotomy, but the wound is very small and the postoperative pain It is relatively light, recovers very quickly, and has a very good therapeutic effect. Before inserting the laparoscope, it is necessary to use a cannula puncture needle to penetrate into the patient's body, and then take out the puncture needle to extend the laparoscope from the cannula ...

AI Technical Summary

Problems solved by technology

[0002] The so-called laparoscopic hepatectomy is a minimally invasive treatment for liver diseases. Its treatment concept is the same as that of traditional surgery. The ultimate goal is to remove the lesion. In the abdominal cavity, the doctor puts the surgical instruments in by watching the TV screen, and performs the operation under the guidance of the camera, while the doctor's hand is always outside. The effect is the same as that of the laparotomy, but the wound is very small and the postoperative pain It is relatively light, recovers very quickly, and has a very good therapeutic effect. Before inserting the laparoscope, it is necessary to use a cannula puncture needle to penetrate into the patient's body, and then take out the puncture needle to extend the laparoscope from the cannula However, the stability after insertion is low, which easily affects the operation of the operation, and the cost of the puncture needle handle is relatively high, resulting in poor reusability of the puncture needle handle

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