Newborn multifunctional safety type lumbar puncture catheter needle with scales

Abstract

The invention relates to a newborn multifunctional safety type lumbar puncture catheter needle with scales, and belongs to the field of medical apparatuses and instruments. The lumbar puncture catheter needle comprises a central steel needle core and an outer side hollow hose catheter needle; the total length of a puncture needle is 4 cm, the length of the front needle body is 3.0 cm, and the length of butterfly-shaped both wings of the tail end is 1 cm. The total length of the central steel needle core part is 4.2 cm, puncturing is facilitated due to the sharp needle tip, and the central steel needle core is 0.2 cm longer than the front end of the outer side hollow hose catheter needle. The needle tip end is provided with a round blunt slope and slants to the steel needle core, the outerside hose catheter needle is matched with the inner side steel needle core, and the handle end of the outer side hose catheter needle is matched with a thread of the inner side of the handle end of the steel needle core. The needle can easily puncture into skin and subcutaneous tissue, tissue damage is not easily caused, and the infection probability caused by repeated puncture damage and repeatedpuncture is lowered. The newborn multifunctional safety type lumbar puncture catheter needle can be used as a puncture sheathing canal needle during continuous cerebrospinal fluid drainage of a lumbar puncture indwelling catheter; due to the tearable design, after the catheter indwells successfully, the outer catheter needle can be torn off gradually along the butterfly-shaped both wings.

Description

technical field [0001] The invention belongs to the field of medical devices, and relates to a neonatal multifunctional safe lumbar puncture catheter needle with scale. Background technique [0002] Lumbar puncture is a basic inspection item in clinical work, and it is also a very important means of diagnosis and treatment in clinical work. Even with the rapid development of science and technology, head MRI, head CT, and bedside head ultrasound are widely used. Cerebrospinal fluid examination still plays an irreplaceable important role in clinical work. [0003] For newborns, due to the imperfect development of the blood-brain barrier and imperfect immune function, clinically newborns are prone to severe diseases such as sepsis, intracranial infection, and hydrocephalus after cerebral hemorrhage. If the diagnosis and treatment are not timely, the children may be seriously affected. Prognosis and adverse neurological sequelae. Therefore, early diagnosis and early standardiz...

AI Technical Summary

Problems solved by technology

Disadvantages: ①The tissue structure of newborns is soft, the breakthrough feeling is not obvious during puncture, and it is difficult to keep the needle perpendicular to the lumbar puncture plane during puncture, which may easily lead to puncture failure; There is no scale on the body, lack of accurate quantitative indicators, and it is difficult to grasp the puncture depth; ③The puncture direction and the puncture plane are kept perpendicular to the puncture plane during puncture, and the success rate is high, but the slender needle body is difficult to maintain vertical needle insertion, and puncture failure is prone to occur

④The front end of the needle tube is thin, and when bleeding or tissue damage occurs, blood clots and tissues are easy to block the tube, resulting in puncture failure; ⑤Repeated puncture increases the risk of infection, bleeding, and puncture injury, and increases the pain of examination for children

Disadvantages: ① Need to cut off the end of the hose by yourself, which may cause needle-puncture damage to the operator; ② The depth of needle insertion is done based on experience, and the needle body does not have a scale to accurately understand the puncture depth; ③ Self-made simple waist puncture needle The pressure of the cerebrospinal fluid cannot be accurately measured; ④The front end of the puncture needle is sharper than ordinary lumbar puncture needles, which is prone to puncture injury and bleeding; For some full-term infants weighing more than 3.5kg, the needle length is not enough to complete the puncture

[0005] For the treatment of neonatal hydrocephalus, continuous lumbar puncture and release of cerebrospinal fluid is a clinically effective treatment method, but repeated lumbar puncture will lead to more and more difficult puncture and a higher probability of puncture injury. It is called (Ommaya reservoir) for cerebrospinal fluid drainage, but the technical requirements are relatively high, and most of them can only be completed by neurosurgery. At present, many large-scale general hospitals and primary hospitals do not have neonatal neurosurgery. This operation has become a clinical practice. However, simple neonatal lumbar puncture can be completed for most neonatal internal medicine, so designing a simple and easy indwelling neonatal lumbar puncture catheter can solve the clinical problem very well

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