B-ultrasonic monitoring movement mechanism with guide device

Abstract

The invention provides a B-ultrasonic monitoring movement mechanism with a guide device, and the mechanism comprises a lifting motor module which comprises a lifting motor and a screw nut mechanism; alifting mechanism guiding module which is connected with the screw nut mechanism and comprises a guiding supporting column and guiding bearings installed on the guiding supporting column; a lifting cylinder barrel which is matched with the lifting mechanism guide module to form a precise guide kinematic pair, wherein the lifting cylinder barrel is provided with an inner wall in rigid contact withthe guide bearing; and a B-ultrasonic probe fixing module which is connected with the lifting mechanism guide module, wherein a B-ultrasonic probe is arranged on the B-ultrasonic probe fixing module.According to the B-ultrasonic monitoring movement mechanism, the guiding supporting column and the multiple guiding bearings are adopted as a guide piston, enough structural rigidity can be provided,the structure is simple, the high-precision requirement of a precise guide rail for part machining and assembling is not needed, and repeated dismounting and mounting can be achieved without damage;sliding friction point contact is achieved through the guide bearing, the system friction force is effectively reduced, and the system movement smoothness is improved.

Description

technical field [0001] The invention belongs to the field of top-mounted HIFU treatment, and in particular relates to a B-ultrasound monitoring movement mechanism with a guide device. Background technique [0002] High-intensity focused ultrasound therapy (HIFU therapy) is a non-invasive treatment method developed in recent years, especially in the field of tumor ablation with good results. This technology focuses low-energy ultrasound in vitro on the target area in the body, and produces biological effects such as instantaneous high temperature, cavitation and mechanical action in the tumor to kill tumor cells in the target area. [0003] At present, the HIFU treatment system guided by B-ultrasound images is widely used at home and abroad. The system uses B-ultrasound images to locate and monitor lesions for precise treatment. The shorter the distance between the B-ultrasound probe and the lesion, the better the image quality and the more accurate the positioning monitori...

AI Technical Summary

Problems solved by technology

[0005] The existing guiding mechanism structure adopts a non-integral rigid guiding structure. Specifically, the upper and lower guiding rings and support rods are connected to form a cylindrical guiding piston. Due to the lack of rigidity of the overall structure after assembly, the deformation is large, and it cannot provide accurate rigid guiding. Large relative displacement occurs after being subjected to lateral force, causing the monitoring target to shift

The sliding friction pair is used in the movement process of the slip ring, the contact area is large, there is no lubricating medium, the sliding friction force is large, and the system movement is not smooth

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