Intelligent heparin pushing injector used for CRRT (continuous renal replacement therapy) machine

Abstract

The invention relates to structural design of parts of a CRRT (continuous renal replacement therapy) machine, and in particular relates to an intelligent heparin pushing injector used for the CRRT machine. The intelligent heparin pushing injector comprises an injection syringe, a controller, a motor, a ball screw, an installation base plate, and a pushing base with an inner cavity, wherein a support base with a first groove in the bottom is fixedly arranged on the top of the installation base plate, and a through hole communicated with the first groove is formed in the bottom of the installation base plate; a fixed base is fixedly arranged on the top of the installation base plate, the pushing base is positioned between the support base and the fixed base, a nut of the ball screw is mounted in the inner cavity of the pushing base; a tube of the injection syringe is arranged on the top of the support base, the tail end of a handle of the injection syringe is connected with the pushing base, the output end of the motor extends towards the through hole, and is connected with the end, extending into the first groove of the support base, of a screw rod of the ball screw through a transmission mechanism, the controller is connected with the motor through a circuit to control the operation of the motor, and the nut of the ball screw drives the pushing base to push the tail end of the handle of the injection syringe to carry out pushing injection. The intelligent heparin pushing injector has the beneficial effects that the input speed is accurate to control and is stable, the operation is convenient, and the degree of automation is high.

Description

technical field [0001] The invention relates to the structural design of CRRT machine accessories, in particular to an intelligent heparin injector for CRRT machines. Background technique [0002] The full name of CRRT is Continuous Renal Replacement Therapy (Continuous Renal Replacement Therapy). It is an extracorporeal blood purification treatment that replaces part of the kidney function by maintaining the balance of water, electrolytes, acid-base, and free solutes in the patient's blood, and removing some harmful components. The CRRT machine is a treatment device specially designed for continuous renal replacement therapy. During the treatment process using the CRRT machine, it is usually necessary to inject an anticoagulant for anticoagulant treatment, and heparin is usually used as an anticoagulant in clinical practice, and passed The way of infusion is to input the CRRT machine to the pipeline connected to the human artery. The input speed of this heparin input metho...

AI Technical Summary

Problems solved by technology

The CRRT machine is a treatment device specially designed for continuous renal replacement therapy. During the treatment process using the CRRT machine, it is usually necessary to inject an anticoagulant for anticoagulant treatment, and heparin is usually used as an anticoagulant in clinical practice, and passed The way of infusion is to input the CRRT machine to the pipeline connected to the human artery. The input speed of this heparin input method is difficult to accurately limit, and there are medical risks. At the same time, the replacement and assembly of the infusion equipment is cumbersome and inconvenient to operate.

Images