Constant-temperature speed control device for deep vein catheterization infusion

By introducing a spiral guide channel and a piston frame structure driven by an excitation coil into the deep vein catheterization infusion device, combined with a temperature sensor and wireless power transmission, the problems of fluid pulsation and temperature control lag in the deep vein catheterization infusion device are solved, realizing uniform delivery of the drug solution and constant temperature control, and improving the stability and safety of infusion.

CN122097747APending Publication Date: 2026-05-29WUXI PEOPLES HOSPITAL
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Patent Information

Application Number
CN202610513301.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-17
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing deep vein catheterization infusion devices suffer from problems such as large fluid pulsation, dead zones, delayed temperature control, and insufficient biocompatibility when dealing with high impedance, small diameter, and long catheters. They are difficult to deliver viscous drugs or low-temperature nutrient solutions smoothly and are prone to protein deposition and microthrombi.

Method used

The piston frame structure with spiral guide grooves, combined with excitation coil drive and temperature sensor, forms a spiral jet to achieve fluid rotation and temperature control. Wireless energy transmission and piezoelectric ceramic plates suppress bubbles and thrombi, ensuring uniform drug delivery and constant temperature control.

Benefits of technology

It enables dynamic mixing of the drug solution, reduces flow resistance, avoids density stratification and precipitation, improves bioavailability, and enhances the anticoagulant performance and clinical safety of the device.

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Abstract

The invention relates to the technical field of deep vein catheterization infusion, in particular to a constant-temperature speed control device for deep vein catheterization infusion, which comprises an infusion catheterization head and an infusion tube, and one side of the infusion catheterization head is fixedly connected with one end of the infusion tube. The piston frame structure with the spiral flow guide groove is arranged in the infusion tube, the fluid dynamic behavior of traditional plunger type propelling is changed, when the piston frame reciprocates, liquid medicine is guided by the spiral flow guide groove to form spiral jet flow, fluid is forced to rotate in the circumferential direction, the static state of a tube wall boundary layer is effectively destroyed, and therefore the liquid medicine is prevented from flowing out. Axial thrust is converted into rotational flow shearing force, flow resistance is reduced, a retention area at the front end of the piston is eliminated, total cross-section uniform conveying is achieved, liquid medicine is always kept in a dynamic mixing state in the pushing process, density layering and precipitation are avoided, and the device is particularly suitable for infusion of fat emulsion, amino acid and other nutrient solutions easy to separate out. And the infusion stability is greatly improved.
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