Quantitative injector

Abstract

The invention discloses a quantitative injector, belonging to the field of medical instruments. The quantitative injector comprises a shell, an injector, a push rod, a lead screw, a nut, a cavity, a circuit board, a display, a control motor, a fixing seat and a switch, wherein the display, an injection amount adjusting knob and the injector are arranged on the shell; the push rod is arranged in the injector; the cavity is formed in the shell; the bearing and the circuit board are arranged in the cavity; the lead screw is arranged on the bearing; the nut is arranged on the lead screw; the lead screw is connected with the control motor; the circuit board is connected with the display, the injection amount adjusting knob, the control motor and the switch through leads respectively; the shell is provided with a track groove at a position corresponding to the lead screw; the fixing seat is arranged on the nut; the fixing seat is positioned on the outer side of the upper surface of the shell, and is connected with the push rod; and the switch is arranged on the shell, and is connected with the control motor through a lead. The quantitative injector has the beneficial effects that: mechanical transmission is adopted, so that accurate dispensing is realized, and stable medicament flow is ensured; and full-automatic operation is adopted, so that artificial influences are reduced, and the medicament effect, medical safety and the like are ensured.

Description

technical field [0001] The invention relates to a medical device, in particular to a quantitative syringe, which belongs to the field of medical devices. Background technique [0002] At present, in the clinical operation of the oncology department, it is often necessary to inject some special drugs. When these drugs are used, different dosages will have completely different effects. For example: dopamine, when the drug is 5g / kg / min, it can play the role of vasodilation; when it exceeds 15g / kg / min, it will play a role of vasoconstriction. Two diametrically opposed medicinal effects will have a life-and-death effect on the patient. Therefore, in the clinical operation of the oncology department, the flow control requirements of special drugs are very strict. However, most of the existing syringes are injected manually, which requires manual control of the drug flow, which is very difficult to control. The flow is often unstable and fluctuates greatly, which is easy to caus...

AI Technical Summary

Problems solved by technology

However, most of the existing syringes are injected manually, which requires manual control of the drug flow, which is very difficult to control. The flow is often unstable and fluctuates greatly, which can easily cause adverse reactions to the patient, and even cause danger to the patient's life.

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