A preparation method of an optical fiber pressure measuring catheter for digestive tract detection

Abstract

The invention discloses an optical-fiber piezometric catheter for detecting a digestive tract as well as a preparation method and application. The optical-fiber piezometric catheter mainly comprises a sensing optical fiber, a protective sleeve, a polymer encapsulating layer and a medical catheter, wherein the sensing optical fiber contains a sensing area and a non-sensing area; the polymer encapsulating layer encapsulates the sensing area of the sensing optical fiber; the protective sleeve encapsulates the non-sensing area of the sensing optical fiber; the medical catheter encapsulates the part, needing to enter a human body and encapsulated by the polymer encapsulating layer and the protective layer, of the sensing optical fiber. Micro-structural sensing units which are arranged repeatedly are engraved in the sensing area of the sensing optical fiber. The micro-structural sensing units contain the information of spectral central reflection wavelengths and repetition frequency information, realizes wavelength-division and frequency-division dual coding, improves multiplexing capacity, and realizes detecting the pressure of different positions of the digestive tract through a wavelength-division and frequency-division dual coding demodulation technique. The optical-fiber piezometric catheter for detecting the digestive tract has the advantages of long measurement length, high resolution and sensitivity, low manufacturing cost and better comfort.

Description

technical field [0001] The invention relates to the field of medical devices, and more specifically, to an optical fiber pressure measuring catheter for digestive tract detection, a preparation method and application thereof. Background technique [0002] The digestive tract provides the body with the ability to build and nourish cells, and its function is directly related to the absorption and utilization of the nutrients needed by the human body, and is related to human health. A large number of research data show that the incidence of digestive tract dysfunction diseases is high worldwide and has an increasing trend. In daily medical work, about 50% of patients seek medical treatment for gastrointestinal symptoms such as abdominal distension and abdominal pain, and 30% to 40% of them are finally diagnosed as gastrointestinal motility disorders, which have become one of the most common digestive system diseases. The pathogenesis of digestive tract motility disease is not ...

AI Technical Summary

Problems solved by technology

[0007] In view of the above defects of the prior art, the present invention provides an optical fiber pressure measuring catheter for digestive tract detection, aiming to solve the technical problems in the prior art that the detection distance is not long and there are detection blind spots due to the limited multiplexing capacity

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