Annular-array ultrasonic endoscope probe, preparation method thereof and fixing rotating device

Abstract

The invention relates to an annular-array ultrasonic endoscope probe, a preparation method thereof and a fixing rotating device. The probe comprises a metal cylinder located in the center and a plurality of piezoelectric array elements arranged around the metal cylinder and formed by cutting piezoelectric ceramic circular rings or monocrystalline circular rings. A backing material layer is equipped between the piezoelectric array elements and the metal cylinder. A matching material layer is covering on the outer sides of the piezoelectric array elements. Decoupling materials are filled among the piezoelectric array elements. The probe further comprises a plurality of coaxial cables correspondingly connected with the piezoelectric array elements; and annular grids sleeved on the metal cylinder, each having a gear-shaped structure and applied for arranging and separating the coaxial cables. By directly cutting piezoelectric ceramic circular rings or piezoelectric monocrystalline circular rings to make the piezoelectric array elements, the probe provided in the invention prevents the problems generated when a multi-layer material with a certain thickness is forcibly reeled into a cylindrical shape in a conventional method and characterized in that the array elements are not coaxially arranged; the array elements on the interface positions are not aligned; a conventional probe is easy to be damaged, disengaged and broken, etc.

Description

technical field [0001] The invention relates to the technical field of ultrasonic endoscope, and more specifically, relates to a ring-shaped array ultrasonic endoscope probe, a preparation method thereof, and a fixing and rotating device. Background technique [0002] In ultrasonic endoscopic technology, circular scanning probes have been widely used in imaging diagnosis of gallbladder, pancreas and digestive tract. Ultrasonic endoscopic technology began to develop as early as the 1980s. In the early days, it could only perform image scanning at a 90-degree angle. Subsequently, it was developed to scan ultrasound images at a 180-degree angle, and the current ultrasound image scan at a 360-degree angle has been successfully developed. [0003] The earliest 360-degree image was scanned by a single-unit probe connected to a motor for circular mechanical rotation. The later-developed ring array probe forms a 360-degree ultrasonic image through electronic scanning without motor...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a simple and reliable ring-shaped array ultrasonic endoscopic probe and its preparation method and fixation method for the existing ring-shaped ultrasonic probes, which are prone to fracture and distortion due to the defects that the existing ring-shaped ultrasonic probes are first fabricated into a plane array and then curled. rotating device

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