Bone cement electric propulsion gun

Abstract

The invention discloses a bone cement electric propulsion gun. The gun comprises an injector, an injector fixing sleeve, an injector push rod, an armature linear motion mechanism, a battery, a trigger, a first sensor and a controller. The injector fixing sleeve is used for fixing a needle cylinder of the injector, the injector push rod is used for being connected to a piston of the injector, and the armature linear motion mechanism is used for driving the injector push rod to move linearly. The first sensor is used for detecting the rotating angle of the trigger around the rotating shaft and inputting a sensing signal to the signal input end of the controller, and the signal output end of the controller is connected to the control signal input end of the armature linear motion mechanism. According to the bone cement electric propulsion gun, an electric injection mode is adopted, the injection speed can be effectively controlled, the operation difficulty of medical staff is reduced, andthe risk that bone cement is solidified in an injection pipeline and the injector is reduced.

Description

technical field [0001] The invention relates to a surgical instrument, in particular to a bone cement electric propelling gun. Background technique [0002] Bioactive ceramics have been widely used clinically as bone filling and repair materials, but these materials are in the form of lumps or granules after high-temperature sintering and do not have plasticity. During the operation, doctors cannot arbitrarily shape the bone defect of the patient, and cannot completely fill the cavity of the deformed bone. On the other hand, the fixation of artificial joints and the internal fixation of unstable fractures also require a new biomedical material. Therefore, a new type of biological material - bone cement has become a hot spot of concern. The main component of bone cement is polymethylmethacrylic (PMMA), which is mainly used in artificial joint replacement surgery and osteoplasty (such as vertebroplasty, etc.). [0003] At present, the clinical use of bone cement mostly uses...

AI Technical Summary

Problems solved by technology

Due to the long injection pipeline, high injection pressure and low fluidity of bone cement, the syringe and the bone cement in the pipeline are often easy to solidify during manual injection, and the injection operation needs to be completed in a limited time, which increases the injection time of medical staff. difficulty

Moreover, when the bone cement of the syringe and the pipeline is solidified to a certain extent, the syringe, the injection pipeline and the bone cement must be replaced, which increases the burden on the patient.

At the same time, the traditional manual injection bone cement device will have obvious shaking phenomenon during the injection process, which will affect the safety of the operation.

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