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Needle changing device for deep vein puncture

A deep vein, fine needle technology, applied in the field of medical devices, can solve the problem of accidental injury to the patient's artery, pleura or peripheral nerve, and achieve the effect of simple structure, good effect and great clinical significance

Inactive Publication Date: 2007-02-07
THE AFFILIATED DRUM TOWER HOSPITAL MEDICAL SCHOOL OF NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in this method of operation, the operator can only judge the direction according to the visual method and experience, which often leads to the situation that the thin needle enters the deep vein and the thick needle still cannot enter the deep vein, making it difficult for the fine needle to detect the deep vein. The purpose of guiding the needle into the deep vein can not be achieved smoothly, and then there will also be a phenomenon that the thick needle may accidentally injure the patient's artery, pleura or peripheral nerve when puncturing

Method used

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  • Needle changing device for deep vein puncture
  • Needle changing device for deep vein puncture

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Embodiment Construction

[0011] like figure 1 As shown, the fine-needle tunnel 1 and the thick-needle tunnel 2 are fixedly connected together, and a certain angle is formed between the two. According to the characteristics of deep vein puncture, the angle between the two can not be greater than 45 degrees, usually 10 to 35 degrees. If the angle is large, the volume will be large, the weight will be heavy, and the cost will be high. Therefore, it is better to take 15 degrees in this example; The distance from the thin needle near the tail end opening 3 and the thick needle near the tail end opening 4 at the back of the fine needle tunnel 1 and the thick needle tunnel 2 should be exactly equal to the fine needle 5 needle tip and the thick needle 6 needle tip of the standard part to the fine needle syringe respectively The distance between the tail fin 7 and the tail fin 8 of the thick-needle syringe; the central points of the four openings of the fine-needle tunnel 1 and the thick-needle tunnel 2 are lo...

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Abstract

The invention discloses a deep-vein piercing needle-changing appliance, which is characterized by the following: the fine needle tunnel and thick needle tunnel connect together with certain separated angle, which intersects to one point from itself centralizing line; the distance from thin needle tunnel tail end and thick tunnel tail end open equals the distance from fine needle and needle end of thick needle.

Description

technical field [0001] The invention relates to a medical device, in particular to a deep vein puncture needle replacement device. Background technique [0002] Deep vein puncture is widely used in clinical departments such as anesthesiology, oncology, ICU (intensive care unit), cardiac surgery, etc., and is one of the routine techniques for monitoring and treating patients. [0003] Before the present invention, the thick deep vein needle (being commonly called as thick needle) may accidentally injure the patient's aorta, pleura or peripheral nerve when puncturing, cause hemorrhoid pneumothorax, huge hematoma or serious nerve injury, and can cause the complication of serious consequence occurred, and even resulted in the death of the patient. In order to avoid this situation, clinically, a small fine needle is usually used to detect the position and direction of the deep vein first. Even if the patient's aorta, pleura or peripheral nerve is accidentally injured during the...

Claims

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Application Information

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IPC IPC(8): A61B17/34A61B19/00A61M5/00A61B90/00
Inventor 蒋忠李强吴星宇
Owner THE AFFILIATED DRUM TOWER HOSPITAL MEDICAL SCHOOL OF NANJING UNIV
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