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Venous catheter provided with double reflux-preventing valves and making method of venous catheter

A venous catheter and anti-reflux technology, applied in the field of medical devices and medical materials, can solve problems such as catheter shedding or breakage, mechanical phlebitis, venous thrombosis, etc., to improve catheterization time, reduce complications, and reduce activity restrictions Effect

Active Publication Date: 2018-08-03
SHANDONG BRANDEN MEDICAL DEVICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although venous catheters bring many benefits to patients, after they are inserted into the human body, many related complications will occur, such as venous infection, venous thrombosis, catheter detachment or rupture, catheter blockage, mechanical phlebitis, etc.

Method used

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  • Venous catheter provided with double reflux-preventing valves and making method of venous catheter
  • Venous catheter provided with double reflux-preventing valves and making method of venous catheter
  • Venous catheter provided with double reflux-preventing valves and making method of venous catheter

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Such as figure 1 , the venous catheter with double anti-reflux valve mainly includes a catheter 1 and a connecting tube 2 . The main material of the catheter 1 is silicone rubber. The side wall of the catheter head end is designed with a vertical opening 11, and the length of the opening is 10 mm. The connecting pipe 2 is mainly composed of a pipe base 21, an extension pipe 22, and a fixed wing 23. Inside the pipe base, there is a silicone rubber pad 24 with a "one" opening, the quantity is 1, and the thickness of the silicone pad is 0.5 mm. The vertical opening 11 at the tip end of the catheter and the opening 25 of the silicon rubber pad together form a double valve. When in use, the catheter 1 is inserted into the vein of the human body, and connected with the connecting pipe 2 to form a complete transfusion and blood drawing passage. Under positive pressure, the valve at the tube base of the connecting tube opens inwards, and the valve at the tip of the catheter ...

Embodiment 2

[0035] The basic structure and usage method of the product are similar to Example 1, the difference is that the shape of the opening of the silicone pad is "X", and the thickness of the silicone pad is 1.0mm, such as Figure 6 shown.

Embodiment 3

[0037] The basic structure and usage method of the product are similar to Example 1, the difference is that the number of "—" shaped openings of the silicone pad is 3, such as Figure 7 shown.

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Abstract

The invention relates to a venous catheter provided with double reflux-preventing valves and a making method of the venous catheter, and belongs to the fields of medical apparatuses and medical materials. The venous catheter provided with the double reflux-preventing valves is composed of a catheter body and a connecting tube, wherein a longitudinal opening is kept in the sidewall of the head endof the catheter body; a high-elasticity pad is designed on a tube holder of the connecting tube; an incision is designed on the pad, so that effects as a second valve can be achieved; and through a double-valve structure which is formed between a proximal end and a distal end, double reflux-preventing effects can be achieved. The valves are made from polyurethane, silicon rubber, thermal elastomeror other high polymer materials having elasticity. The venous catheter provided with the double reflux-preventing valves is arranged between the two valves in vitro, and a positive / negative control system can be formed in vivo, so that the state of the catheter can be better regulated and controlled in processes of conducting infusion, blood drawing and standing by, so that various using requirements can be satisfied. The venous catheter provided by the invention is applicable to transvenous chemotherapy drug delivery; and a problem of reflux in a cathetering process can be effectively solved, so that problems of thrombus and occlusion, which are caused by the reflux, can be relieved, and the cathetering duration of the catheter can be prolonged.

Description

technical field [0001] The invention belongs to the field of medical equipment and medical materials, and in particular relates to a venous catheter with double anti-reflux valves and a preparation method. Background technique [0002] Intravenous catheters are the main method for establishing venous access, and have been widely used in recent years as the main device for establishing venous access in chemical drug therapy, intravenous hypertrophic therapy, and rescue of critically ill patients. For example, a peripheral venous catheter is a method of deep venous catheterization in which the catheter tip is placed in the superior vena cava from a peripheral venous catheter. [0003] Although intravenous catheters bring many benefits to patients, many related complications will occur after they are inserted into the human body, such as venous infection, venous thrombosis, catheter shedding or rupture, catheter blockage, mechanical phlebitis, etc. Catheter blockage and thromb...

Claims

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Application Information

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IPC IPC(8): A61M25/00A61M5/14A61M39/10A61M39/24
CPCA61M5/14A61M25/0009A61M25/0021A61M39/10A61M39/24A61M2039/244
Inventor 张海军段翠海刘光李宜玮王新坤侯文博周超尹玉霞鲁守涛
Owner SHANDONG BRANDEN MEDICAL DEVICE
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