Automatic injecting instrument for brain angiography

Abstract

The invention discloses an automatic injection apparatus for cerebral angiography, which comprises a semicircular groove-shaped body, a spring and a spring base are arranged at the rear of the body, the other end of the spring is connected with a piston matching the body, and the front of the body is There is a syringe holder on the inside, and the holder has a reserved slot for the injection needle to pass through. The distance between the piston and the syringe holder can place a medical syringe; it also includes an electromagnetic two-position three-way valve and a control circuit. , the electromagnetic two-position three-way valve is connected to the rubber hose between the syringe and the puncture needle, and the movement of the valve core is controlled by the electromagnetic relay to control the conduction of the rubber hose; the control circuit includes an electromagnetic relay, a time relay, an AC contactor and Rotary switch and other components, in which the electromagnetic relay coil, time relay and rotary switch are connected in series, the time relay energization delay closing contact is connected in series with the AC contactor coil, and the contactor moving contact is connected in series to the control of the X-ray machine. in the circuit.

Description

technical field [0001] The invention relates to the technical field of injection instruments, in particular to an automatic injection instrument for cerebral angiography. Background technique [0002] Cerebral angiography is an important means for diagnosing cerebrovascular diseases. Before brain surgery, cerebral angiography can be used to determine the location, shape, size, number, blood circulation, and bleeding complications of intracranial aneurysms; after surgery, cerebral angiography can be used to observe the effect of surgical treatment. With the development of computer technology, computed tomography (CT) is generally used before and after brain surgery, but cerebral angiography still has its unique features, and it has the same effect and value as computed tomography (CT). Cerebral angiography is also flawed: during contrast surgery, medical staff must push contrast agents for patients in the X-ray room, and instruct the X-ray machine operator to start X-ray mac...

AI Technical Summary

Problems solved by technology

Cerebral angiography is also flawed: during contrast surgery, the medical staff must push contrast agent for the patient in the X-ray room and instruct the X-ray machine operator to start the X-ray machine, and the medical staff are repeatedly exposed to X-rays. Occupational diseases are prone to be left behind

Although this solution solves the problem of preventing doctors from being exposed to X-rays to a certain extent, its structure is complex, the cost is high, and the implementability is poor.

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