Hydraulic Ultrasound Probes for Elastography

Abstract

The invention relates to a hydraulic ultrasonic probe for elasticity imaging, which comprises a probe core part, a probe seat, a sliding shaft, a sliding bearing, a hydraulic cylinder and a pressure sensor. The lower end of the sliding shaft is connected with the probe core part; the upper end of the sliding shaft extends into the hydraulic cylinder; the pressure sensor is arranged on the inner side wall of the hydraulic cylinder. Liquid exists between the probe core part and the hydraulic cylinder (a handle) for carrying out buffering, so that the probe core part is always adhered to a checked part to carry out low-amplitude vibration, and thus, 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; a force can be better applied and the force application direction is more easily kept perpendicular to the surface of the probe core part, so that quality of elasticity imaging is improved; and moreover, the pressure sensor is arranged on the inner side wall of the first hydraulic cylinder, so that the pressure of the probe core part is indirectly measured, 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 hydraulic 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 ultrasound elastography, depending on the experience of the examiner, hold the handle with your hand to make the core of the probe vibrate with a small amplitude to meet the requirements of elastography. 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 separate from the inspection site, resulting in intermittent elastography and affecting the quality of elastography. In addition, when the probe core is detached from the inspection site, It is ...

AI Technical Summary

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 contact area of ​​the inspection part is larger than the area of ​​the probe core. When the area of ​​the inspection part is small, the inspection part cannot be accurately judged. Elasticity difference with the surrounding; (2) Once the pressure deviates from the direction perpendicular to the surface of the probe core, the pressure at some points on the inspection site cannot be detected, and there is a pressure blind zone

Images