Automatic drug injection device for nerve blocking

Abstract

The invention discloses an automatic drug injection device for nerve blocking. The automatic drug injection device comprises a power device, an injector and a needle holding handle, the injector comprises a needle cylinder and a piston rod capable of moving in the needle cylinder, a piston handle is arranged at the tail end of the piston rod, the front end of the needle cylinder communicates witha puncture needle through a drug injection catheter, a needle fin is arranged at the edge of the other end of the needle cylinder, and the drug injection catheter travels in the needle holding handle;the power device comprises a shell, a diving mechanism, needle fin fixing clamps and a piston handle fixing clamp, a moving groove is formed in the shell, the needle fin fixing clamps are fixed to the shell, and the piston handle fixing clamp is slidably arranged on the moving groove; and a drug injection button and a pumpback button are arranged on the needle holding handle and connected with the driving mechanism through control wires. An operation doctor can control injection or pumpback by the single hand through the drug injection button and the pumpback button on the needle holding handle, nerve blocking anesthesia can be completed only by one person, and thus manpower is saved; and an anesthetist knows about the pressure state of drug injection advantageously, and the reference isprovided for the drug injection situation.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to an automatic drug injection device for nerve block. Background technique [0002] Nerve block anesthesia is a method of injecting local anesthetics around nerve trunks, plexuses, and nodes to block their impulse conduction, anesthetize the innervated area, and achieve painless surgery. It is currently widely used in clinical practice. , Commonly used nerve blocks are helpful for intermediary, infraorbital, sciatic, and digital (toe) nerve trunk blocks, cervical plexus, brachial plexus blocks, and stellate ganglion and lumbar sympathetic ganglion blocks for diagnosis and treatment. [0003] Ultrasound-guided nerve block is an important technology that has been rapidly popularized in recent years. This technology requires the anesthesiologist to operate the ultrasound probe with one hand to display the nerve, while the other hand operates the nerve block punctur...

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