Artery puncture needle

Abstract

An artery puncture needle comprises a light-transmission cannula seat, a remaining needle outer cannula, a steel needle seat and a steel needle. A tubular pressure measuring joint is arranged at the rear end of the light-transmission cannula seat, the remaining needle outer cannula is opposite to the pressure measuring joint and arranged at the front end of the cannula seat, the steel needle is disposed on the steel needle seat, a holding groove which is respectively communicated with the remaining needle outer cannula and the pressure measuring joint is formed in the cannula seat, an elastic stop block which can be operated to slide between a puncture position and a pressure measuring position is movably assembled in the holding groove, a pressure measuring channel which runs through transversely is formed on the stop block, and a blood draining hole which is communicated with the holding groove is formed on the cannula seat. The artery puncture needle has the advantages that the artery puncture needle is simple in structure, convenient in operation, capable of preventing blood from spraying outwards, high in puncture success rate, accurate in pressure measurement, convenient in blood collection, and the like.

Description

technical field [0001] The invention relates to an arterial puncture needle. Background technique [0002] For critical surgical patients or intensive care patients who need real-time monitoring of blood pressure, invasive blood pressure monitoring is usually used, that is, an arterial puncture needle is inserted into the artery, and then connected to an arterial manometry device. The traditional arterial puncture needle generally includes a cannula base with a pressure measuring joint at the rear end, an indwelling needle outer sleeve arranged at the front end of the cannula base, a steel needle sleeved in the indwelling needle outer sleeve with the front end protruding, and a steel Steel needle holder for needle connection. Due to the high arterial blood pressure, the arterial puncture needle with the above structure is prone to blood spraying from the pressure measuring joint during the puncture operation, polluting the operation area, and possibly causing the spread of ...

AI Technical Summary

Problems solved by technology

Due to the high arterial blood pressure, the arterial puncture needle with the above structure is prone to blood ejection from the pressure measuring joint during the puncture operation, polluting the operating area and possibly causing the spread of iatrogenic diseases. To address the above problems, there are currently various solutions. For example, the patent number is 200820022391.7, the Y-shaped arterial puncture trocar with a guide wire to prevent blood spraying, which prevents the problem of blood spraying, but its Y-shaped structure will affect the accuracy of the pressure measurement value

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