Core-free puncturing device

Abstract

The invention discloses a core-free puncturing device. The core-free puncturing device comprises a puncturing tip end, a canula assembly and a sealing assembly, wherein the canula assembly comprises a canula; the canula is arranged in a penetrating way, and is provided with a first end and a second end, the first end is selectively sealed by the sealing assembly, and the second end is selectively opened or closed by the puncturing tip end; the puncturing tip end is connected with the second end in an inserting way, and a connecting part is arranged between the puncturing tip end and the canula and can be extended and retracted. The core-free puncturing device has the advantages that by not arranging the puncturing core rod of the traditional puncturing device, the cost is lower, the packaging by detaching the puncturing core rod, the sealing assembly and the canula assembly is not needed, and the packaging cost is reduced; when an anastomat or other operation apparatuses need to be put into an abdominal cavity, the end opening of the canula is opened for delivering the anastomat or other operation apparatuses, and the convenience in use is realized.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to a coreless puncturer. Background technique [0002] In abdominal examination, abdominal operation and other minimally invasive or surgical operations, trocar is an indispensable surgical instrument. The trocar can establish an access channel in the abdominal wall of the human body so that staplers or other surgical instruments (such as endoscopes, scissors, guide wires, catheters, filters, stents, etc.) To control the pneumoperitoneum required for surgery for examination or surgical manipulation. [0003] At the beginning of the minimally invasive laparoscopic medical operation, the doctor generally makes a small incision in the patient's abdomen, and then aligns the apex of the puncture end of the puncture mandrel with the small incision and moves it downwards while reciprocating left and right. The puncture sleeve passes through the cortex of the patient's abdomen, and then t...

AI Technical Summary

Problems solved by technology

[0004] However, because the puncture device is mostly disposable, thus, in the traditional puncture device with a puncture mandrel, the puncture mandrel of each puncture device is discarded after completing the puncture, which causes serious waste and improves reduce the manufacturing cost of the trocar; and because the sealing structure of the trocar is made of elastic material, in order to ensure its sealing performance, the puncture mandrel and sealing sleeve assembly need to be disassembled and packaged, which increases the packaging cost

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