Hemodialysis drainage device capable of puncturing for multiple times

Abstract

The hemodialysis drainage device comprises a puncture part, an outflow tube, a backflow tube and a connecting part, the two ends of the puncture part are communicated with the first end of the outflow tube and the first end of the backflow tube respectively, the second end of the outflow tube and the second end of the backflow tube are communicated with a blood vessel through the connecting part, and the puncture part is connected with the puncture part. A plurality of puncture points are arranged on the puncture part, the puncture points can be penetrated by a puncture needle, and when the puncture needle withdraws, the puncture points are restored and seal the puncture part again. The puncture part, the outflow pipe, the backflow pipe and the connecting part form a blood conduction loop located at the subcutaneous position of the human body, the requirement of clinical hemodialysis is met, only the puncture part needs to be taken down and replaced after multiple times of hemodialysis puncture, maintenance and replacement are convenient, and compared with an internal arteriovenous fistula mode, the flow is controllable, and damage is not prone to occurring; and the pain of the patient can be relieved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a multiple-puncture hemodialysis drainage device. Background technique [0002] Hemodialysis (HD) is one of the renal replacement therapies for patients with acute and chronic renal failure. It drains the blood in the body to a dialyzer outside the body, and the blood and the electrolyte solution (dialysate) with a similar concentration to the body pass through the dialyzer. , ultrafiltration, adsorption and convection principles for material exchange, remove metabolic waste in the body, maintain electrolyte and acid-base balance, remove excess water in the body at the same time, and return the purified blood to the body. Hemodialysis usually needs to be performed several times a week. At present, arteriovenous fistula surgery is mostly used in clinical practice to establish vascular access. After frequent puncture of the vein wall at the back end of the internal vascula...

AI Technical Summary

Problems solved by technology

After frequent puncture of the vein wall at the back end of the internal vascular fistula, scars and damage will appear on the vessel wall, and due to the non-renewable nature of the blood vessel, the number of blood vessels available for dialysis in the later stage of the patient will decrease day by day, and the service life will decrease. greatly increased the pain of the patient

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