Diagnostic agents, preparations and substances for medical and surgical purposes; Diagnostic agents, preparations and substances for medical purposes, namely, the visual enhancing of polyps, adenomas, carcinomas, early stage cancers and other lesions in the colon for patients undergoing colonoscopy; Diagnostic agents, preparations and substances for medical purposes, namely, the visualization of colonic polyps, adenomas, carcinomas, early stage cancers and other lesions in patients undergoing screening colonoscopy including patients at high risk of colorectal carcinoma (CRC), those with previous history of polyps, adenomas, carcinomas, early stage cancers and other lesions, patients with colorectal cancer and patients with relevant family history; Diagnostic reagents and coloring agent for medical and surgical use; Coloring agent for use with imaging medical equipment; Coloring agent for use with colonoscopic equipment; pharmaceutical preparations for use in gastroenterology; pharmaceutical preparations for the differentiation of the tissues of the intestines and colon and polyps, adenomas, carcinomas, early stage cancers and other lesions thereon; pharmaceutical preparations for use in endoscopic or colonoscopic diagnostic evaluation; pharmaceutical preparations for enhancing visualization of polyps, adenomas, carcinomas, early stage cancers and other lesions during gastrointestinal endoscopic procedures; pharmaceutical preparations for use in gastroenterology for colon and digestive system health and regulation; pharmaceutical preparations for use in endoscopy of the gastrointestinal tract; pharmaceutical preparations and preparations aiding detection, diagnosis, prevention and treatment related to the gastrointestinal field; pharmaceutical preparations and preparations aiding detection, diagnosis, prevention and treatment related to the gastrointestinal endoscopy field; pharmaceutical preparations to aid the detection, diagnosis, prevention and treatment of gastroenterological diseases; pharmaceutical preparations, namely, coloring agent for use in endoscopic procedures; pharmaceutical compositions, namely, coloring agent for use in endoscopy; pharmaceutical preparations for use as reagents for medical use; pharmaceutical preparations, namely, coloring agent for use in endoscopy, colonoscopy, sigmoidoscopy, anoscopy, rectoscopy and proctoscopy; pharmaceutical preparations containing methylene blue for enhancing visualization during endoscopic procedures; pharmaceutical preparations containing dyes for enhancing visualization during endoscopy, colonoscopy, sigmoidoscopy, anoscopy, rectoscopy and proctoscopy; pharmaceutical preparations containing methylene blue coloring agent for pharmaceutical, medical and surgical purposes; pharmaceutical preparations containing coloring agent dye for pharmaceutical, medical and surgical purposes; methylene blue for pharmaceutical, medical, surgical and medical diagnostic purposes; dye for pharmaceutical, medical, surgical and medical diagnostic purposes

Medical devices for use in endoscopic procedures of the gastrointestinal tract; Medical devices to aid the detection, diagnosis, prevention and treatment of gastroenterological diseases; Medical instruments to aid the detection, diagnosis, prevention and treatment of gastroenterological diseases; Medical devices for enhancing visualization during endoscopic procedures; Medical devices for enhancing visualization during endoscopy, colonoscopy, sigmoidoscopy, anoscopy, rectoscopy and proctoscopy; Medical devices for introducing compositions containing methylene blue into the human body for pharmaceutical, medical, surgical and medical diagnostic purposes; Medical devices for introducing compositions containing dye into the human body for pharmaceutical, medical, surgical and medical diagnostic purposes; Medical devices made with methylene blue for enhancing visualization of polyps, adenomas, carcinomas, early stage cancers and other lesions for pharmaceutical, medical, surgical and medical diagnostic purposes; Medical devices made with dye for enhancing visualization of polyps, adenomas, carcinomas, early stage cancers and other lesions for pharmaceutical, medical, surgical and medical diagnostic purposes; Medical devices for use in endoscopy, colonoscopy, sigmoidoscopy, anoscopy, rectoscopy and proctoscopy; Medical devices for use in endoscopy of the gastrointestinal tract