Intraluminal pressure detection for diverticular disease
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.
1. A pressure detection tablet, comprising:
a capsule comprising a dye encapsulated within an inner coating, wherein the inner coating is configured to rupture at a pressure equal to or greater than a pressure threshold; and
an outer coating surrounding the capsule, wherein the outer coating is configured to provide delivery of the capsule to a targeted site such as the colon.
2. The pressure detection tablet of claim 1 , wherein the dye is water-soluble and non-metabolizable.
3. The pressure detection tablet of claim 1 , wherein the inner coating comprises a pressure-sensitive polymer.
4. The pressure detection tablet of claim 1 , wherein the pressure threshold of the inner coating is selectable based on variations in a thickness, density, elasticity or a combination thereof of the inner coating.
5. The pressure detection tablet of claim 1 , wherein the outer coating comprises a pH sensitive polymer that is insoluble at the acidic pH of the stomach and proximal small intestine.
6. The pressure detection tablet of claim 5 , wherein the pH sensitive polymer for the outer coating is selected from the group consisting of methacrylic acid ester, shellec, and hydroxylpropylmethylcellulose acetate succinate.
7. The pressure detection tablet of claim 5 , wherein the pH sensitive polymer for the outer coating comprises a copolymer of EUDRAGIT L and EUDRAGIT S polymers, formulated to dissolve at neutral pH.
8. The pressure detection tablet of claim 5 , wherein the outer coating further comprises azo polymers of styrene and 2-hydroxy methyl acrylate, formulated to dissolve by bacterial degradation.
9. The pressure detection tablet of claim 1 , wherein the tablet comprises at least two capsules surrounded by the outer coating.
10. The pressure detection tablet of claim 9 , wherein the at least two capsules comprise different dyes and are configured to rupture at equal to or higher than a different pressure threshold from one another.