continuous positive pressure intravenous catheter

Abstract

The invention discloses a continuous positive pressure venous indwelling needle comprising a catheter component, a needle tube component and an infusion liquid connector component. The catheter component comprises a tee catheter holder and a catheter. The needle tube component comprises a needle holder tube. The infusion liquid connector component is a needleless infusion connector. The tee catheter holder is connected with the needleless infusion connector through a long catheter, and a flow-limiting clamp used for limiting flow speed of liquid medicine in the long catheter is fitted outside the long catheter. The long catheter is provided with a pressure liquid storage part. When the pressure liquid storage part contains the liquid medicine, a pressure source of the pressure liquid storage part enables the long catheter and the catheter to admit flows under positive pressure. The continuous positive pressure venous indwelling needle has the outstanding advantages that the pressure liquid storage part of the long catheter enables the long catheter and the catheter to admit the flows under positive pressure, thrombosis is prevented effectively, and the risk of medical accidents is reduced greatly.

Description

technical field [0001] The invention belongs to the field of infusion equipment, in particular to an intravenous indwelling needle capable of effectively preventing thrombus formation. Background technique [0002] The use of intravenous indwelling needles can reduce the pain caused by repeated venipuncture and the fear of injections, reduce the anxiety of family members, facilitate clinical medication, rescue medication for acute and critical patients, reduce the workload of nurses, and reduce the pain of patients Therefore, intravenous indwelling needles are widely used in clinical practice. [0003] A kind of venous indwelling needle is disclosed in Chinese patent CN202822325U, as figure 1 As shown, it includes a catheter assembly, a needle tube assembly and an infusion solution connector assembly. The catheter assembly includes a three-way catheter adapter 2 and a catheter 1 connected to the front end of the first opening 21 of the three-way catheter adapter 2 . The ne...

AI Technical Summary

Problems solved by technology

In this way, the catheter at the position in contact with the patient will be in a negative pressure state, and the blood will flow back into the catheter 1. After a long time, platelets will precipitate and promote thrombus formation, which may lead to blockage of the venous indwelling needle, or may During the next infusion, the thrombus will enter the patient's body with the liquid medicine, causing unnecessary medical accidents

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