Motor-type automatic ultrasonic probe for elasticity imaging

Abstract

The invention relates to a motor-type automatic ultrasonic probe for elasticity imaging, which comprises a probe core part, a handle, a probe seat, a connection base, a linear motor, a sliding shaft, a sliding bearing, a pressure sensor and a spring. The probe core part is connected with an output shaft of the linear motor by the sliding shaft; both ends of the spring are respectively connected with the probe seat and the upper end of the pressure sensor; and the lower end of the pressure sensor is connected with the probe core part. A user only needs to hold the handle with a hand and the probe core part is very easy to keep always in contact with a checked part, so that working intensity of a checking doctor is reduced and the problem of interruption of elasticity imaging, which is caused by the case that the probe core part is separated from the checked part, is avoided; an acting force applied by the linear motor is perpendicular to the surface of the probe core part, so that quality of elasticity imaging is improved; and moreover, the pressure sensor is arranged at the back of the probe core part, so that the stress condition of the checked part is more accurately detected and the elastic modulus of the checked part is better reflected, and thus, elasticity difference of the checked part and the surroundings thereof is more accurately judged.

Description

technical field [0001] The invention relates to an ultrasonic probe, in particular to a motor-type automatic ultrasonic probe for elastography. Background technique [0002] In the process of ultrasound elastography, it is usually necessary to use a hand-held ultrasound probe. The current hand-held ultrasound probe generally includes a probe core and a handle, and one end of the handle is connected to the probe core. When performing ultrasonic elastography, the examiner needs to continuously apply a series of forces along the axial direction of the handle to make the core of the probe vibrate in a small amplitude to meet the requirements of elastography. mistake. In addition, because the probe core is directly connected to the handle, it is difficult to control. When the probe core is vibrated in a small range, the probe core is easy to break away from the inspection site, resulting in intermittent elastography and affecting the quality of elastography; After the position,...

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Problems solved by technology

[0004] Although the above-mentioned ultrasonic probe can measure the pressure of the probe core, it still has the following defects: (1) The actual area of ​​the probe is larger than the area of ​​the probe core, and the contact area of ​​the inspection part is larger than the area of ​​the probe core. When the area of ​​the part is small, it is impossible to accurately judge the elastic difference between the inspection part and the surrounding area; (2) Once the pressure deviates from the direction perpendicular to the surface of the probe core, the pressure at some points on the inspection part cannot be detected, and there is a pressure blind zone

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