B mode ultrasonic electromagnetic mechanical fan scanning device

Abstract

The invention discloses a B-ultrasonic electromagnetic mechanical fans scanning device which is characterized in that the scanning device is composed by a housing component comprising an outer bushing, a front bushing and a seal gasket, a micro-telescopic magnet component comprising a telescopic electromagnetic rod and a locking nut, a steering mechanism component of central axial movement comprising a central axis, a bearing group, a pin column, a lever, a hinge pin, an inner housing and a pressure board, a sensor component for alternator position feedback comprising a photoelectric encoder, a photoelectric code disc and a circuit board, a conversion connector component comprising a switch socket, a switch plug and an ultrasonic transducer probe, wherein, the housing component is connected with the steering mechanism component of central axial movement, the micro-telescopic magnet component is connected with the housing component, the sensor component for alternator position feedback is connected with the steering mechanism component of central axial movement, and the conversion connector component is connected with the steering mechanism component of central axial movement.

Description

1. Technical field [0001] The invention relates to a B-type ultrasonic electromagnetic mechanical fan scanning device, which is used for B-type ultrasonic scanning diagnosis in ophthalmology and belongs to the technical field of medical equipment. 2. Background technology [0002] The mechanical sector scanning device can be used for B-mode ultrasonic differential diagnosis of intraocular and orbital diseases, such as retinal detachment, intraocular and orbital tumors, vitreous opacity, hemorrhage, fundus lesions and intraocular foreign bodies and other diseases. Because of its low cost, high scanning frequency (about 10Hz), and high cost performance, it is widely used in B-mode ultrasonic diagnostic instruments for intraocular and orbital diseases, and has broad application prospects. [0003] However, traditional link-type mechanical sector scanning devices are all based on the time method, that is, a single ultrasonic scanning process is triggered at a uniform time interv...

AI Technical Summary

Problems solved by technology

However, it takes time to start, stop and change direction in any reciprocating swing process, and the ultrasonic transducer probe has a small swing range and high swing frequency, which makes it impossible to realize the ideal uniform swing in theory.

Moreover, due to the complex movement mechanism of the traditional link-type mechanical sector scanning device, the rotation speed of the drive motor and the swing speed at the end of the link are not linear in nature, so simple control of the drive motor to rotate at a constant speed cannot realize the ultrasonic transducer at the end. swing at a constant speed, so that the premise of ideal uniform swing cannot be guaranteed at all.

Therefore, the real swing angle positions at uniform time intervals are actually uneven and inaccurate, and the resolution is low, which eventually leads to aliasing and blurring of the collected image information, which affects the diagnosis of the operator, and easily leads to misdiagnosis and failure. Serious consequences such as diagnosis

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