Eddy current type positive-pressure irrigating syringe with controllable impulse frequency and flow

Abstract

The invention discloses an eddy current type positive-pressure irrigating syringe with controllable impulse frequency and flow. The eddy current type positive-pressure irrigating syringe comprises a nipple, a cannula, a core bar and a piston disposed at one end of the core bar. The inner wall of the cannula is provided with a spiral convex strip. The outer wall of the piston is provided with a groove that matches the convex strip. The piston is in interference fit with the inner wall of the cannula. An open end of the nipple is in threaded connection with a nipple cap for sealing the cannula.The eddy current type positive-pressure irrigating syringe with controllable impulse frequency and flow can generate eddy current type impulse wave with controllable frequency and can achieve the effect of positive-pressure tube sealing.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a vortex type positive pressure flushing syringe with controllable pulse frequency and flow rate. Background technique [0002] During the clinical treatment, it is necessary to flush or / and seal the vascular access devices (including peripheral venous catheters, central venous catheters (CVC), peripherally inserted central catheters (PICC) and infusion ports) in patients. Operation. Especially since the invention of the indwelling needle in 1962, with the popularization and application of the indwelling needle in clinic, the complications of catheter blockage have caused great troubles to patients and medical staff. Studies have shown that various vascular access catheter blockages are very common, the highest It can reach 38.89%. Most of these medical indwelling catheters need to be reinserted after being blocked, which not only increases the pain of patients, but also ...

AI Technical Summary

Problems solved by technology

[0004] However, in actual clinical nursing operations, this pulse method is completed by nurses using 5ml or 10ml syringes by hand. As for whether nurses perform the above operations as required, the amount of liquid pushed each time, and the frequency of pushing are lacking uniform norms. Constraint mechanisms and objective evaluation standards cannot effectively prevent violations of operating procedures

At present, the clinical training of flushing / sealing operation mainly relies on experience teaching, and ordinary syringes are used to operate, which cannot allow nurses to master the pulse-type flushing technique in a short time. Different understandings and different techniques eventually lead to 20%-52% blockage of vascular access tubes, which is related to the non-standard flushing process of nurses

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