Multi-head type entry needle

Abstract

The invention relates to a multi-head type entry needle. The multi-head type entry needle comprises a needle seat provided with a concave cavity and a needle tubing fixing hole, a needle tubing fixedto the needle seat, a shunting seat arranged in the concave cavity of the needle seat and provided with a through hole, a cone seat, a negative pressure seat and an adjusting seat, wherein the throughhole penetrates through the upper end of the needle tubing, the cone seat is provided with a channel, an outer thread and a ring-shaped boss are arranged in the middle, a warning protrusion and a first self-destructed protrusion are arranged on the side surface of the ring-shaped boss, the bottom of the ring-shaped boss is arranged in the concave cavity of the needle seat, the bottom of the ring-shaped boss is assembled with the shunting seat to form a cavity, the negative pressure seat sleeves outside the needle seat, and is internally provided with a cross separating plate, the cross separating plate limits the downstream of the needle seat and is provided with a needle tubing passing hole, the adjusting seat sleeves the middle of the cone seat and the top of the negative pressure seat,and is provided with a ladder through hole, and the ladder through hole is internally provided with an inner thread and a second self-destructed protrusion. According to the multi-head type entry needle, the extension length of the needle tubing can be adjusted, and the self-destructed function and the warning function before self-destructing are achieved. The whole size is small, the parts are compact in matching, the matching degree is high, and the multi-head type entry needle can be assembled in one time.

Description

technical field [0001] The invention relates to the technical field of syringes, in particular to a multi-headed injection needle. Background technique [0002] In the existing multi-head injection needle, the structure between the parts is not stable enough to adjust the protruding length of the needle tube, and the disposable self-destruct structure needs to be redesigned. Contents of the invention [0003] The present invention aims at the above problems and provides a multi-headed injection needle. [0004] The purpose of the present invention can be achieved through the following technical solutions: [0005] A multi-head injection needle, comprising: a needle base, which is provided with a concave cavity with an open top surface and a needle tube fixing hole communicating with the bottom surface of the cavity; a needle tube, which is passed through and fixed in the concave cavity of the needle base and the needle tube fixing hole; The seat is arranged in the cavity...

AI Technical Summary

Problems solved by technology

[0002] In the existing multi-head injection needle, the structure between the parts is not stable enough to adjust the protruding length of the needle tube, and it is necessary to redesign the disposable self-destruct structure

Images