Three-dimensional type-B ultrasound device for realizing conical scanning

Abstract

The invention discloses a three-dimensional type-B ultrasound device for realizing conical scanning, which is characterized in that: a thrust ball bearing 1, a support sheet, a thrust ball bearing 2 and a nut are sequentially fixed on the outer wall of an inner layer of a shell, a motor 1 and a coupling sheet are connected, a photoelectric encoder 1 is arranged between the nut and the coupling sheet, and two ends of a support rod are respectively and fixedly connected with the coupling sheet and the support sheet; the coupling sheet is fixedly connected with a bearing fixing sheet, a bevel gear 1 and a probe are connected and respectively arranged at two sides of the bearing fixing sheet, and a sensor in the probe is connected with a control circuit board; a motor fixing sleeve is fixed at the periphery of the support sheet, one end of a motor 2 passes through the motor fixing sleeve and is connected with a bevel gear 2, a photoelectric encoder 2 is arranged between the motor 2 and the bevel gear 2, and the bevel gear 2 and the bevel gear 1 are engaged; and the photoelectric encoder 1 and the photoelectric encoder 2 are both connected with the control circuit board which is connected with the program controller. The invention has the advantages of simple structure, convenience of operation, controllable scanning range, simpleness of data process and high scanning efficiency.

Description

[technical field] [0001] The invention relates to the field of medical instruments, in particular to a three-dimensional B-ultrasound device for realizing cone scanning. [Background technique] [0002] The basic principle of B-ultrasound imaging is: emit a group of ultrasonic waves to the human body, scan in a certain direction, and judge the distance and nature of the organs according to the delay time and strength of the echo. After processing by electronic circuits and computers, a B-ultrasound image is formed. Ultrasound Biomicroscope (abbreviation: UBM, English full name: Ultrasound Biomicroscope) is a new type of ophthalmic B-ultrasound imaging detection equipment developed in the early 1990s. UBM uses programmable logic devices to control electronic circuits to excite high-frequency ultrasonic sensors to emit high-frequency ultrasonic waves as a signal source, receive ultrasonic echo signals and perform electronic signal processing to obtain digital images related to...

AI Technical Summary

Problems solved by technology

In the prior art, there are two methods of B-ultrasound / UBM with sector scanning. The first one is to use a DC rotating motor to drive the pendulum through a one-stage rotation-swing conversion mechanism, and directly convert the rotational motion into a swing. When the rotation radius of the shaft pin is equal to the swing radius of the pendulum body, the pendulum body can swing at a constant speed, and the scanning head swings according to the cosine law. When there is an error between the rotation radius of the shaft pin and the swing radius of the pendulum body, it will cause Severe geometric distortion in B-ultrasound images

Another method is to use a custom motor to directly drive the pendulum, but its structure is complex, the scanning effect is poor, the accuracy is low, and the cost is high

It can be seen that the sector scanning ultrasonic biomicroscope is not enough to solve the difficult problems of clinical medicine

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