An apparatus for producing strain in an optical fibre proportional to dynamic pressure fluctuation in the surrounding substance. The apparatus includes a diaphragm having a first face that, in use, is exposed to dynamic pressure fluctuations in the substance, and a second, opposite face, the diaphragm being adapted to flex in response to dynamic pressure fluctuations applied to it. One or more optical fibres are mounted on either the first or the second face of the diaphragm, whereby strain is produced in the fibre when the diaphragm flexes.

An apparatus for producing strain in an optical fibre proportional to dynamic pressure fluctuation in the surrounding substance. The apparatus includes a diaphragm having a first face that, in use, is exposed to dynamic pressure fluctuations in the substance, and a second, opposite face, the diaphragm being adapted to flex in response to dynamic pressure fluctuations applied to it. One or more optical fibres are mounted on either the first or the second face of the diaphragm, whereby strain is produced in the fibre when the diaphragm flexes.

A pressure detection tablet is disclosed. The tablet is a capsule including a dye encapsulated within an inner coating, in which the inner coating is configured to rupture at a pressure equal to or greater than a pressure threshold. The tablet further includes an outer coating surrounding the capsule, in which the outer coating is configured to provide delivery of the capsule to a targeted site. The dye may be a non-metabolized, water soluble dye, such that a ruptured capsule releases the dye which can be visually detected in the urine. In some embodiments, the disclosure provides a method of making the tablet, using the tablet to detect peak pressure in the colon and reducing the risk of developing a colonic disorder.

A pressure detection tablet is disclosed. The tablet is a capsule including a dye encapsulated within an inner coating, in which the inner coating is configured to rupture at a pressure equal to or greater than a pressure threshold. The tablet further includes an outer coating surrounding the capsule, in which the outer coating is configured to provide delivery of the capsule to a targeted site. The dye may be a non-metabolized, water soluble dye, such that a ruptured capsule releases the dye which can be visually detected in the urine. In some embodiments, the disclosure provides a method of making the tablet, using the tablet to detect peak pressure in the colon and reducing the risk of developing a colonic disorder.

A pressure detection tablet is disclosed. The tablet is a capsule including a dye encapsulated within an inner coating, in which the inner coating is configured to rupture at a pressure equal to or greater than a pressure threshold. The tablet further includes an outer coating surrounding the capsule, in which the outer coating is configured to provide delivery of the capsule to a targeted site. The dye may be a non-metabolized, water soluble dye, such that a ruptured capsule releases the dye which can be visually detected in the urine. In some embodiments, the disclosure provides a method of making the tablet, using the tablet to detect peak pressure in the colon and reducing the risk of developing a colonic disorder.

Systems and methods for detecting pressure changes is provided. A system can include an object having a surface. The system can include a coating having microcapsules. The coating can be a pressure-sensitive paint configured to emit fluorescence outside of a threshold pressure. The coating can adhere to the surface of the object and receive an application of a pressure from a source. The coating can change at least a portion of the microcapsules from a first state to a second state responsive to the application of the pressure meeting a threshold pressure. The system can include an image capture device configured to capture images of the coating to identify a change in pressure at a portion of the object.