Anti-disengaged perfusion needle driven by bag

Abstract

The invention discloses an anti-disengaged perfusion needle driven by a bag. The needle comprises a sleeve, a fixing assembly is connected to the end of the sleeve, a needle core is arranged inside the sleeve, and a fixing assembly penetrates through the end of the tip of the needle core; the fixing assembly comprises a fixing card, a connecting part is arranged at one side of the fixing card, a puncture part is arranged at the other side of the fixing card, a water injection channel is further arranged inside the inner wall of the fixing assembly, an inlet of the water injection channel is formed in the connecting part and communicated with an injection guiding pipe, an outlet of the water injection channel is communicated with a fixing cavity formed in the side wall of the puncture part,the fixing cavity is connected with a movable piece through a rotating shaft, a bounce back piece is arranged on the inner side of the movable piece, an elastic bag is arranged at the position closeto an outlet of the water injection channel, and the open end of the elastic bag is communicated with the water injection channel and fixed to the side wall of the water injection channel. The tip ofthe needle core sequentially penetrates through the connecting part, the fixing card and the puncture part. The needle has the advantages of being simple in structure and good in fixing effect.

Description

technical field [0001] The invention relates to a device used in the medical field, in particular to a perfusion needle driven by a capsule to prevent falling off. Background technique [0002] The fixation of the aortic perfusion needle used in the current cardiac surgery is mainly to rely on suturing a needle on the aortic wall, and fix the perfusion needle after tightening. This fixation only fixes the outside of the perfusion needle on the aortic wall, and can only be fixed when the aorta has high pressure and the tension of the aortic wall is high. The above fixation can easily lead to two situations: one is that the tip of the perfusion needle can still slide after external fixation, and a slight inclination of the tail of the perfusion needle may cause the tip of the perfusion needle to slide out of the aortic wall, especially in infant surgery , due to the small inner diameter of the ascending aorta and the short tip of the perfusion needle, a small deviation may ca...

AI Technical Summary

Problems solved by technology

From the above, it can be seen that the falling off of the perfusion needle will cause serious consequences, and how to solve the problem of "falling off the perfusion needle" has become an urgent problem to be solved

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