Fig. 7
From: Overview of technical solutions and assessment of clinical usefulness of capsule endoscopy
Use of an external magnetic field to bring the cutting tool closer to the biopsy site (a), the method of performing biopsy (b) and protecting the biopsy material (c). Rotation of the two magnetized parts of the capsule takes place after the disappearance of an external magnetic field. The biopsy material is also secured inside the capsule. After leaving the human body, the sample may be further analysed, for example, microscopically/microbiologically