Safe drug injecting pump with displacement pressure detection

Abstract

The invention discloses a safe drug injecting pump with displacement pressure detection, which comprises a shell, wherein a matched infusion bag is clamped under the shell; an input and display device is arranged on the shell; a control system and a drive device are arranged in the shell. The safe drug injecting pump with the displacement pressure detection is characterized in that the drive device comprises a water inlet switch valve and a water outlet switch valve contacted with a pump pipe of the matched infusion bag; a squeezing valve controlled by a squeezing cam is arranged between the water inlet switch valve and the water outlet switch valve; a displacement pressure sensor for detecting whether the matched infusion bag is clamped in place or not and whether an infusion tube is blocked or not is arranged between the squeezing valve and the water outlet switch valve. The safe drug injecting pump with the displacement pressure detection provided by the invention can be used for not only measuring infinitesimal displacement, but also detecting pressure, can give an alert when the matched infusion bag of the drug injecting pump is not clamped in place or the infusion bag falls off during an infusion process, can also accurately give an alert when the infusion tube is blocked during an operation process after the matched infusion bag is installed on the drug injecting pump, and ensures the safety of an infusion process of the drug injecting pump.

Description

technical field [0001] The invention relates to a safety injection pump with displacement pressure detection. Background technique [0002] The advantage of the microcomputer drug injection pump is that it can ensure continuous and uniform micro-dosage to achieve stable curative effect. It has been widely used clinically in analgesia, anesthesia or chemotherapy for patients during or after surgery, cancer patients and various pain patients, as well as patients who need Accurate continuous or intermittent infusion of liquid medicine. Some patients are particularly sensitive to vasoactive drugs. Minor speed changes or short-term interruptions can cause large fluctuations in blood pressure and heart rate, transient discomfort, and even life-threatening. However, the traditional injection pumps widely used in the market have obvious safety risks: [0003] One is that most electronic pumps currently on the market do not have a clogging alarm function because of cost considerati...

AI Technical Summary

Problems solved by technology

Some patients are particularly sensitive to vasoactive drugs, a slight change in speed or a very short interruption can cause large fluctuations in blood pressure and heart rate, transient discomfort, and even life-threatening

However, the traditional injection pumps widely used in the market have obvious safety risks:

[0003] First, most electronic pumps on the market do not have a clogging alarm function due to cost considerations

During the infusion process, if the pipeline is discounted, the needle or the infusion tube is blocked, if it cannot be dealt with in time, it will lead to interruption of drug administration and delay in treatment. The longer the time, the possible clinical consequences cannot be estimated.

[0004] The second is that the microcomputer injection pump has a blockage alarm function, but because the elasticity of the infusion pipeline itself is greatly affected by temperature changes and the thickness of the tube wall, the infusion catheters produced in the same batch are used under different temperature environments, or the thickness of the catheter wall is inconsistent. , the pressure required to trigger the injection pump blockage alarm is also different, which may falsely trigger the blockage alarm

[0005] The third is that when the injection pump and the matching liquid bag are installed and used, the clamping is often not in place, or it falls off halfway, which will cause the valve plate of the injection pump to be unable to effectively prevent the liquid in the matching liquid bag from flowing out. When the liquid bag is higher than the human body infusion, the infusion may be out of control due to gravity, resulting in the risk of excessive infusion

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