Guiding type noninvasive membranous tube pushing device

Abstract

The invention provides a guiding type noninvasive membranous tube propulsion device. Each of an inner membranous tube assembly and an outer membranous tube assembly is provided with a membranous tube, wherein each membranous tube is composed of an inner tube and an outer tube that are sleeved together; the same side end parts of the inner tube and the outer tube are mutually sealed and form a ring-shaped sealing interlayer; when the sealing interlayer is in a liquid filling state, the tube wall of the inner tube is in contact with and the tube wall of the outer tube, so as to ensure that when the inner membranous tube assembly displaces, the inner wall of the outer membranous tube is driven to extend; a guiding cord penetrates between the inner membranous tube and the outer membranous tube from the back end of the outer membranous tube assembly; after the guiding cord penetrates through the front end of the outer membranous tube assembly, the guiding cord returns to the rearward of the outer membranous tube assembly from the outer side of the outer membranous tube assembly; the propulsion speed is controllable; the propulsion device is instantly taken out, so as to shorten time of examination and operation; moreover, sliding friction is not generated between the propulsion device and a cavity wall ( such as inner intestinal wall), so as to realize noninvasive examination. Besides, after the propulsion device is taken out, operation channels are left in patients' bodies. Therefore, multi-channels allowing surgical instruments to enter and leave the patients' bodies are realized.

Description

technical field [0001] The invention relates to a guided non-invasive propelling membrane tube device as a medical device, which is mainly used for propelling inspection and surgical equipment, such as propelling a capsule endoscope for digestive tract examination, and propelling surgical instruments for sampling or performing operations on lesion sites. technical background [0002] Existing methods of intestinal endoscopy generally include oral capsule endoscopy and enteroscopy. The patient takes a capsule endoscope (smart capsule gastrointestinal endoscope system, also known as medical wireless endoscope) orally. The capsule endoscope runs naturally through the digestive tract, ingests image data in the digestive tract, and finally discharges it through the anus. The disadvantage is that the capsule endoscope runs in the intestinal tract for a long time, generally 5 to 20 hours, or even longer. In addition, since the capsule endoscope relies on intestinal peristalsis to ...

AI Technical Summary

Problems solved by technology

The disadvantage is that the capsule endoscope runs in the intestinal tract for a long time, generally 5 to 20 hours, or even longer

In addition, because the capsule endoscope relies on intestinal peristalsis to operate, and intestinal peristalsis has the characteristics of uneven speed, it is easy to lose the opportunity to capture some key image positions instantly

Third, in the case of large tumors or other causes of intestinal obstruction, the examination cannot be performed

Its disadvantage is that it has a large pulling force on the intestinal body, which increases the pain of the patient, and the examination is often terminated due to spasm

At the same time, it also has the disadvantages of long inspection process and difficult operation. The whole enteroscopy takes about 3 hours.

[0003] In addition, due to the limitation of the surgical channel, it is difficult to deliver surgical instruments to the lesion in the cavity, remove the cut lesion tissue (such as polyps), and administer drugs to the lesion

For example, when the bleeding needs to be stopped at the same time as the operation, or when the congestion needs to be taken out at the same time as the operation, since the channel is single, it cannot be performed at the same time.

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