B-type ultrasound position feedback type mechanical fan probe apparatus

Abstract

The invention relates to a B-shaped ultrasonic location reaction type mechanical fan scanning probe device which comprises an outer casing, a DC drive motor group, a bevel gear commutating group, a probe swinging angle location reaction type sensor group and an adapter substitute. The outer casing is connected with the DC drive motor group; the DC drive motor group is vertically provided with an ultrasonic transducing probe oscillation axis, the bevel gear commutating group is vertically provided with the DC drive motor group, the probe swinging angle location reaction type sensor group is provided with the bevel gear commutating group in a coaxial way, i.e. the coaxial location relation is formed with an ultrasonic transducing probe; the adapter substitute is vertically and firmly provided with a bevel gear commutating group axis. The device is mainly characterized in that the device is provided with a terminal location reaction type sensor, i.e. a photoelectrical coder, the accurate angle location information of the terminal ultrasonic transducing probe left and right swinging is accurately measured, and outputted in an impulse signal way of the 90 degrees phase differencebetween two routes, thereby knowing the angle and the direction information of the swinging.

Description

(1) Technical field: [0001] The invention relates to a B-type ultrasonic position feedback type mechanical sector scanning probe device, which is used for B-type ultrasonic scanning diagnosis in ophthalmology and belongs to the technical field of medical equipment. (two) background technology: [0002] The B-type ultrasonic position feedback mechanical sector sweep probe device can be installed with various specifications of ultrasonic transducer probes to perform high-speed scanning oscillations with a frequency of ≤12Hz and an amplitude of ±30°, and can simultaneously output 0.1 The angular position information in ° is used to trigger scanning. Therefore, it can be used for B-mode ultrasonic diagnosis in ophthalmology to diagnose retinal detachment, intraocular and orbital tumors, vitreous opacity, hemorrhage, fundus lesions and intraocular foreign bodies and other diseases. [0003] At present, due to the low cost, high scanning frequency (about 10 Hz) and high cost perf...

AI Technical Summary

Problems solved by technology

However, traditional scanning devices are based on the time method, that is, a single ultrasonic scanning process is triggered at a uniformly spaced time.

The premise of the time method is to try to control the scanning process as a uniform swing, but due to the complexity of the commonly used connecting rod swing mechanism, the rotation of the drive motor and the swing at the end of the connecting rod are not linear in nature; and the swing frequency is high, the angular displacement is small, and the speed Fast and limited acceleration, so this premise cannot be guaranteed

Therefore, the angular position of the evenly spaced time sampling is actually uneven and inaccurate, which eventually leads to aliasing and blurring of the collected image information, which affects the operator's diagnosis and easily leads to serious consequences such as misdiagnosis and inability to diagnose

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