Polycarbonate for capsule endoscopy

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  • Material impervious to stomach acid and alkaline intestinal flora
  • “Ample design freedom” facilitates large filming angle for camera
  • Safely diagnosing gastrointestinal diseases

The introduction of capsule endoscopy has resulted in great progress in the detection of gastrointestinal diseases and is an important complement to gastroscopy and colonoscopy. For the examination, the patient swallows the small capsule, which is transported like food through the digestive tract while delivering images of the stomach and intestinal walls. Doctors store the images on external image recorders and analyze them to arrive at a diagnosis.

Material impervious to stomach acid and alkaline intestinal flora

Because patients ingest the capsules, the materials used must meet extremely stringent requirements. For the capsule shell, Shenyang Shangxian uses a special grade of the polycarbonate Makrolon from Covestro, formerly Bayer MaterialScience. The material is biocompatible and is impervious to both stomach acid and the alkaline intestinal flora. It is also mechanically strong and safe, ensuring a trouble-free examination.

Endoscopy as convenient as swallowing a pill

Capsule endoscopes are composed of a miniature camera, digital processor system, and a transceiver for wireless data transmission. They are taken with water, just like medicine. The materials therefore have to be safe and corrosion-resistant, while also allowing for a large filming angle for the camera.

polycarbonate capsule endoscopy

For the examination via capsule endoscopy, the patient swallows a small capsule with built-in camera, which is transported through the digestive tract while delivering images of the stomach and intestinal walls. The polycarbonate Makrolon from Covestro, which is used for the capsule shell, is biocompatible and safe (source: Shenyang Shangxian)

“Ample design freedom” facilitates large filming angle for camera

The plastic is highly transparent, enabling clear, well-resolved images. It also offers ample design freedom, facilitating a large filming angle for the camera so that a wide field of view can be covered. These advantages make an important contribution toward eliminating uncertainties in the diagnosis of gastrointestinal diseases and spare the patients discomfort during the examination.

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