A kind of sampling device in digestive tract

Abstract

The invention discloses a sampling device used in the alimentary tract. The sampling device comprises a base and a slider, and the slider is in sliding butted connection with the base form a capsule body; a camera module is integrated in the base; permanent magnets are integrated in the base and the slider respectively, and the magnetic poles of the permanent magnets between the base and the slider neutralize each other. Butted connection and fastening between the base and the slider are achieved through a stretched elastic connection piece, and the elastic tension force of the elastic connection piece is larger than the magnetic force between the first permanent magnet and the second permanent magnet; the end, in butted connection with the base, of the slider is provided with a sampling knife blade, and the insides of the base and the slider are connected to form a sample storing cavity. According to the sampling device, the design of an existing capsule type sampling mechanism is improved for the defects in the prior art, it is achieved that an associated object of a lesion area in the alimentary tract is sampled, the discomfort of the human body is greatly reduced, the area where sampling is conducted without a surgical operation in the alimentary tract is further expanded, the sampling process is more reliable, and the aim of full alimentary tract sampling is more approached.

Description

technical field [0001] The invention belongs to miniature medical instruments, in particular to a sampling device in the digestive tract. Background technique [0002] Gastrointestinal disease is a common disease that affects the health of modern people, but because digestion is inside the human body, the diagnosis and treatment of related diseases requires corresponding observation and inspection, so visual detection plays a very important role in the prevention, diagnosis and treatment of gastrointestinal diseases , and the shape of the human digestive tract is a slender pipe, which is distributed between various organs of the human body, and the structure of the digestive tract is irregular. The total length of the digestive tract in the human body is 8m. Great challenge. [0003] Traditional gastroscopy / colonoscopy sampling requires the use of catheters to connect internal actuators and external monitoring operating mechanisms, which may cause tension and pain for patie...

AI Technical Summary

Problems solved by technology

[0002] Gastrointestinal disease is a common disease that affects the health of modern people, but because digestion is inside the human body, the diagnosis and treatment of related diseases requires corresponding observation and inspection, so visual detection plays a very important role in the prevention, diagnosis and treatment of gastrointestinal diseases , and the shape of the human digestive tract is a slender pipe, which is distributed between various organs of the human body, and the structure of the digestive tract is irregular. The total length of the digestive tract in the human body is 8m. big challenge

[0003] Traditional gastric / colonoscopy sampling requires the use of catheters to connect the internal actuators and external monitoring operating mechanisms, which may cause tension and pain for patients, making it difficult for elderly patients, children, and heart disease patients to adapt

Moreover, the traditional gastroscope / colonoscope cannot enter the ileum for operation; although the oral wireless capsule endoscope does not require a catheter, it can only perform image examination of the digestive tract at present, and cannot perform sampling operations

[0004] The Mechanical Design Institute of South China University of Technology has studied a MEMS-based magnetically controlled electromagnetic suction gastrointestinal sampling microcapsule, which uses the capillary action and surface tension of the absorbent fiber to absorb trace liquids in the gastrointestinal tract, but it lacks a camera system. It is impossible to accurately sample the designated area, and at the same time, the object collected by this principle is only for the body fluid tissue in the gastrointestinal tract, which cannot meet the sampling volume requirements of other tissues in the relevant lesion area

[0005] The Chinese patent with the notification number CN102085084B discloses a magnetic control sampling capsule system based on wireless energy supply in vitro, but the structure shown requires an electrically driven sampling device to be installed on the capsule, requiring more structural space to set up the sampling device. Since the sampling capsule needs to be swallowed into the body, its total size is limited. A separate sampling device will inevitably occupy the internal space of the capsule, and the storage space is small, resulting in too small a sampled tissue volume, which cannot meet the needs of disease diagnosis and treatment.

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