Data Collection of Patients Treated With the ColonRing for the Creation of Circular Compression Anastomosis

The proposed study is a post marketing, observational, retrospective data collection intended to gather and record data on patients treated with the ColonRing device in routine clinical practice at a single center. The data will assist in further evaluating the performance of the ColonRing device in regards to the creation of a colorectal anastomosis. Hypothesis:The performance of the ColonRing, determined by the rate of complications, will be within the acceptable range reported in the literature for alternative treatment modalities.