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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

Pending Publication Date: 2018-04-10
西藏多欣健康科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the human venous blood pressure fluctuates with breathing and heartbeat. After the infusion stops, the lock fluid gradually loses, and the positive pressure of "positive pressure lock" disappears quickly, and blood immediately flows back into the catheter, and even continues to the needle seat. And in the infusion tube farther away, these coagulation substances will form microthrombi, in addition to blocking the catheter and affecting the infusion, these microthrombi will be washed into the blood circulation during the next infusion, blocking the pulmonary capillaries, forming pulmonary granuloma and alveolar infarction

Method used

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  • Positive-pressure liquid bag self-sealing type intravascular indwelling needle
  • Positive-pressure liquid bag self-sealing type intravascular indwelling needle
  • Positive-pressure liquid bag self-sealing type intravascular indwelling needle

Examples

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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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Abstract

The invention provides a positive-pressure liquid bag self-sealing type intravascular indwelling needle. The positive-pressure liquid bag self-sealing type intravascular indwelling needle is mainly composed of a main body part A, a part I B and a part II C. For the positive-pressure liquid bag self-sealing type intravascular indwelling needle, the operation is extremely simple, a working medium liquid bag seals an infusion channel and provides continuous positive pressure, and the effects in sealing a tube, preventing backflow and resisting thrombus are reliable; the operation is easy to master when the indwelling needle is placed through puncture, during the nursing operation, the operations of pumping liquid medicine and preparing tube sealing liquid are not needed, the operation can becompleted through one movement of one hand, a disposable syringe and a flusher do not need to be consumed, thus the step of the nursing operation is saved, and the nursing efficiency and quality are improved.

Description

【Technical Field】 [0001] The invention belongs to the technical field of medical devices. More specifically, the present invention relates to a self-sealing intravascular indwelling needle with a positive pressure liquid bag. 【Background technique】 [0002] The reason why the catheter is blocked by the indwelling needle is that when blood flows back into the lumen of the catheter, coagulation factors such as platelets in the blood coagulate in the low-velocity catheter, forming a thrombus and blocking the catheter. In order to ensure that the catheter can be reused, tube sealing technology must be used to prevent tube blockage. "Tube sealing" has become a term in medical and nursing science. [0003] At present, the "sealing" in the standard method is to inject normal saline or heparin sealing solution into the catheter to "sealing", this "sealing" is to allow normal saline or other sealing solutions to occupy the catheter cavity as a working fluid The inner space prevents blood ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/158A61M39/20
CPCA61M5/158A61M39/20
Inventor 邓杜娟
Owner 西藏多欣健康科技有限公司
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