Anesthesia needle with adjustable positioning for anesthesia department

Abstract

The invention discloses an anesthesia needle with adjustable positioning for anesthesia department, and relates to the technical field of medical devices. The invention comprises a needle tube, a needle tube and a piston, wherein the needle tube is arranged at one side of the needle tube, and the piston is arranged in the inner cavity of the needle tube. According to the invention, through the needle feed limiting component and the injection quantity limiting component which are independently arranged, the limiting ring can physically prevent the needle tube from excessively penetrating, thus effectively avoiding the risk of tissue, nerve or blood vessel damage caused by excessively deep needle insertion; the cooperation of the injection quantity limiting rod and the piston stopper can provide clear tactile feedback (sudden increase in resistance) when the preset dosage is reached, so as to prevent the liquid medicine from being injected excessively; and meanwhile, the adjustment is carried out by using the transmission mechanism of the worm wheel and the gear rack, so that the precision is high, the position is locked by the self-locking characteristics of the worm wheel and worm, which prevents displacement due to force or vibration during operation, ensures the stability of preset parameters and greatly improves the accuracy and repeatability of anesthesia operation.

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