Anesthesia spinal needle with negative-pressure inner needle core

Abstract

The invention discloses an anesthesia spinal needle with a negative-pressure inner needle core. The anesthesia spinal needle comprises a puncture needle, the negative-pressure inner needle core and a needle lug, wherein the inner needle core is hollow; an elastic film is arranged at the front end of the inner needle core; and a negative-pressure device is arranged at the rear end of the inner needle core. The anesthesia spinal needle has the advantages that the needle core is the negative-pressure needle core and is not required to be unplugged in the whole puncture process, and the inner needle core serves as a negative-pressure tube, so that the anesthesia spinal needle is convenient and efficient; and moreover, ligamentum flavum and the like are not cut off, but are only dissected bluntly, so that injury is reduced, and the lumbago incidence rate of a patient is greatly reduced. By the anesthesia spinal needle, the negative-pressure tube has a good negative-pressure effect regardless of the magnitude of epidural negative pressure of the patient, so that complications of injury of nerve roots or spinal marrow due to continuous needle inserting when negative pressure is deficient are reduced, anesthesia safety is improved, and the patient can be safe in an anesthesia puncture process.

Description

technical field [0001] The invention relates to an epidural puncture needle with a negative pressure inner needle core, and belongs to the technical field of medical instruments. Background technique [0002] The choice of anesthesia for patients who need surgical treatment About 50% of the patients need epidural anesthesia, the tool used for epidural anesthesia is the epidural puncture needle, the pros and cons of the epidural puncture needle have a great influence on the anesthesia puncture technique So far, there are many inventions and improvements about anesthesia puncture needles, but these inventions and improvements still have shortcomings and have not been widely applied clinically. When patients undergo anesthesia puncture, the cut tissue and blood clot block the puncture needle and do not produce negative pressure, which leads to nerve root or spinal cord injury, which causes nerve injury or paraplegia. There are also cases of low back pain after epidural puncture...

AI Technical Summary

Problems solved by technology

When puncturing the ligamentum flavum, it is necessary to cut the ligamentum flavum. These cut tissues and blood clots are likely to block the needle cavity of the epidural puncture needle. When the needle cavity is completely blocked, the negative pressure in the epidural space cannot be transmitted to the negative pressure tube, making If there is no negative pressure in the negative pressure tube, when the needle continues to be inserted, it will cause puncture damage to the nerve root or puncture the dura mater to damage the spinal cord, resulting in serious complications such as nerve damage or paraplegia.

When the epidural puncture needle cuts the ligamentum flavum, the ligamentum flavum is damaged, causing many patients to experience low back pain after epidural anesthesia, and some patients cannot be cured for many years

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