Disposable central venous pressure measuring device and application method thereof

Abstract

The invention relates to a disposable central venous pressure measuring device. The disposable central venous pressure measuring device comprises an intravenous infusion needle, a three-way valve and a closed container, wherein the intravenous infusion needle comprises a needle head, a needle tube cavity and an infusion catheter which are successively connected; the three-way valve is connected to one end of the infusion catheter; the closed container is connected to the other end of the three-way valve; the closed container comprises a normal saline region and a measurement region; the normal saline region is connected with the measurement region through a partition board; and a spring is fixedly arranged in the measurement region. The invention further provides an application method of the disposable central venous pressure measuring device. Compared with a conventional product, the disposable central venous pressure measuring device provided by the invention has the advantages that an original two-person operation mode is converted into a one-person operation mode, so that manpower is reduced; moreover, the operation is simplified,the operation time of medical personnel is greatly shortened, and the working efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a disposable central venous pressure measuring device and a method for using the same. Background technique [0002] The cubital venous pressure can more accurately estimate the central venous pressure, and can reflect the changes in venous return to the heart, right atrial pressure, and right heart function. Whether patients with coarctation have indications for pericardial stripping surgery has important reference significance and is an essential hemodynamic monitoring index. At present, the relevant design and research on central venous pressure measurement at home and abroad mainly focus on these two aspects: [0003] (1) Sensor automatic monitoring: the central venous catheter is connected with the sensor to realize continuous monitoring after automatic zero calibration of the monitor. U.S. patent applications with publication numbers US20100130874A1 and US4428383A,...

AI Technical Summary

Problems solved by technology

However, there are the following defects in clinical use: for patients with insufficient blood volume and low or even negative central venous pressure, after the liquid level of the pressure measuring tube is connected to the atmosphere, when the intrathoracic pressure increases during inhalation, it may cause a large amount of The air instantly enters the central vein through the pressure measuring tube, and then enters the pulmonary artery through the right atrium and right ventricle, causing air embolism; secondly, the self-made "L"-shaped tube has no negative pressure mark, and when the central venous pressure is negative, it can only be estimated by experience; Finally, the self-made pressure measuring tube needs to prepare a tape measure, a large needle, a three-way valve, a saline bag, an infusion stand, etc. The operation requires two people to complete, and the medical staff is time-consuming and laborious, which affects and limits its scope of use.

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