Minimally invasive supporting type rectum electrical impedance characteristic detecting device

Abstract

The invention discloses a minimally invasive supporting type rectum electrical impedance characteristic detecting device, and belongs to the technical field of medical equipment. The minimally invasive supporting type rectum electrical impedance characteristic detecting device comprises an endoscope, a detecting electrode, a pressure sensor, a supporting rod, a stepping motor and a signal generating and collecting device. The supporting rod is mounted on an endoscope pipe in a sleeved mode through a circular ring and a connecting rod connected with the circular ring, the detecting electrode and the pressure sensor are arranged on the supporting rod, the unfolding mode of the supporting rod is umbrella-shaped unfolding, and the stepping motor rotates to drive the circular ring to move in the same direction along the endoscope pipe, so the connecting rod and the supporting rod are driven to enable the supporting rod connected with the electrode to stretch outwards, and the detecting electrode and the pressure sensor mounted on the supporting rod can make tightly contact with the inner wall of a rectum. When the stepping motor rotates reversely, the supporting rod returns to an original position, and the detecting electrode is separated from the inner wall of the rectum. According to the minimally invasive supporting type rectum electrical impedance characteristic detecting device, the detecting electrode and other instruments can make tightly contact with the inner wall of the rectum, tiny changes of diseases of rectum tissue can be reflected, the position of diseased region can be found in time, and three-dimensional imaging is carried out.

Description

technical field [0001] The invention belongs to the technical field of medical devices and relates to a minimally invasive support type rectal electrical impedance characteristic detection device. Background technique [0002] Rectal cancer refers to cancer located between the dentate line and the junction of the sigmoid colon and rectum. It is a common malignant tumor in the gastrointestinal tract, and its incidence rate is second only to gastric and esophageal cancer. It is the most common type of colorectal cancer (accounting for about 60%). The vast majority of genetic patients are over 40 years old and under 30 years old, about 15% are males, and the ratio of male to female is 2-3:1. Rectal cancer is a lifestyle disease. At present, it has jumped to the second place in the cancer rankings. [0003] Rectal cancer is often asymptomatic or non-specific in clinical early stage, so patients and first-time doctors often do not pay attention to it, and the detection technolo...

AI Technical Summary

Problems solved by technology

In traditional electrical impedance tomography, the placement of electrodes is usually limited to a certain plane. However, electrical impedance imaging is essentially a three-dimensional problem, and its current is not limited to flow on a certain plane. Therefore, two-dimensional image reconstruction is usually will produce artifacts

The main problem of 3D electrical impedance imaging is that the system cannot afford complex algorithms, and the pathological nature makes the algorithm sometimes difficult to implement, especially in the edge area, which eventually makes it difficult to judge the target position or shape distortion in the reconstructed image

The open electrical impedance imaging system can well realize the determination of the surface impedance of the object, but due to the factors of the detection depth, the accuracy can only be guaranteed within the range of 2 to 3 cm

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