Artery puncture device

Abstract

The invention provides an artery puncture device, and belongs to the technical field of medical instruments. The artery puncture device comprises an artery puncture needle, the artery puncture needle comprises a needle core and a sleeve, the needle core is sleeved with the sleeve, and the artery puncture device further comprises a guide wire and an infrared pulse sensor. The strongest arterial pulse point is sensed through the infrared pulse sensor, optical signals are converted into electric signals, and the intensity of the electric signals is indicated through the assembly for indicating the intensity of the optical signals to reflect the intensity of pulses. When the arterial puncture device is used, infrared light positioning can be achieved only by connecting the magnetic sheet at the bottom of the infrared pulse sensor with the magnetic patch at the needle body part of the puncture needle. After a puncture point is determined, a needle is inserted, a guide wire is fed when blood return exists in a needle core, and whether a cannula can be inserted or not is confirmed by confirming whether the guide wire is fed smoothly or not. According to the artery puncture device, a puncture point can be accurately positioned, the cannula can be smoothly arranged, and the success rate of first puncture and the success rate of puncture of special patients can be increased.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to an arterial puncture device. Background technique [0002] Arterial pressure (ABP) or blood pressure monitoring is the most basic circulatory monitoring project and the simplest cardiovascular monitoring project. It can reflect cardiac output and total peripheral vascular resistance, and is also related to factors such as blood volume, vascular wall elasticity, and blood viscosity. It can be divided into non-invasive arterial pressure monitoring and invasive arterial pressure monitoring. Among them, invasive arterial blood pressure monitoring can instantly and accurately reflect the changes in hemodynamics, and it is convenient to repeatedly collect arterial blood, and is widely used in the monitoring of vital signs of critically ill patients during the perioperative period. The most important aspect of arterial puncture is puncture site location and cannula...

AI Technical Summary

Problems solved by technology

However, in clinical practice, even if the puncture needle penetrates the artery, there is a risk of cannula failure

There are two reasons for the failure of catheterization. One is that the puncture needle has just reached the artery wall, but the cannula has not completely entered the arterial lumen. Although blood can be seen at this time, the catheter cannot be inserted; The entry is too deep, close to the opposite side of the arterial wall, causing the cannula to adhere to the cannula wall when it is advanced, causing the cannula to bend and the cannula to fail (see figure 1 )

After the first failed cannulation, the artery can constrict and even become irritated and spasm, making recannulation more likely to fail

[0004] In summary, invasive arterial blood pressure monitoring has the problems of difficult puncture positioning and catheter placement

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