Positive-pressure liquid bag self-sealing type intravascular indwelling needle
A technology of indwelling needles and fluid sacs, applied in the field of medical devices, can solve problems such as pulmonary granuloma, alveolar infarction, and impact on infusion, and achieve the effects of saving nursing steps, easy to master, and reliable anti-reflux
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Embodiment 1
[0052] Example 1: Self-sealing intravascular indwelling needle with positive pressure liquid sac of the present invention
[0053] The implementation of this embodiment is as follows:
[0054] The positive pressure liquid sac self-sealing intravascular indwelling needle of the present invention is mainly composed of main body part A, part I B and part II C. The main body part A is composed of a concave Luer connector needle seat 1, an indwelling catheter 2 and an infusion channel 3; at the end of the concave Luer connector needle seat 1 is an indwelling catheter 2, indwelling catheter 2 and a concave Luer connector needle seat 1 The inner cavity constitutes the infusion channel 3;
[0055] Part I B is formed by connecting the steel needle core 4 and the steel needle core shank 5 with convex luer connector;
[0056] Component II C is formed by connecting the working fluid capsule 6, the male Luer joint working fluid capsule cap 7, the inner and outer fluid sac communication tube 8 and...
Embodiment 2
[0063] Example 2: Self-sealing intravascular indwelling needle with positive pressure liquid sac of the present invention
[0064] The implementation of this embodiment is the same as that of Example 1, except that the working fluid sac tube 6 is a high-elastic polyethylene U-shaped tube. This design optimizes the manufacturing process of the working fluid sac. For patients with "intracranial hypertension, hypertension, heart failure, and kidney disease", indwelling needle infusion and tube sealing are usually required to restrict the infusion of saline, but conventional flushing and sealing tubes will inject extra sodium and liquid into the body. The use of the self-sealing indwelling needle with the positive pressure sac of this embodiment can prevent the patient from entering too much salt and water. This kind of operation is extremely simple. The tube is sealed under the condition of fully enclosed working fluid. No liquid or medicine enters the blood circulation, no pollutan...
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