Subjects with Exero's Smart Drain Device Attached This arm contains subjects which will have Exero's leak detection Device used: Exero Smart Drain is placed on their large bowel during colonic resection surgery (either open, laparoscopic or robotic). The study aims to demonstrate that the parameters measured by the device in in-vivo, non-disrupted tissue are different than parameters measured in ischemic tissue. Once this data is collected a detection algorithm can be trained. This procedure will add no more than 20 minutes to the existing procedure that is performed per hospital standard overall and will enable collection of control vs. ischemia induced clinical data, essential to developing the detection algorithms.

the Exero Leak Detection System components used in this study are:

• Smart drain - a surgical drain with added sensing electrodes
• Transceiver /Recording Unit (TRU) - a wearable placed outside the body on intact skin and is connected to the implanted electrodes. The unit also acts as a wireless connection to the Monitoring Subsystem.
• Monitoring Subsystem - a tablet or a computer connected wirelessly to the transceiver providing logging, applying analysis algorithms on the logged signals and providing indication/alerts to the medical staff derived from the signals recorded by the electrodes.

Baseline data collected from the intended bowel segment to be resected, prior to tissue manipulation, is compared to the data recorded after the ischemia induced by the resection procedure.

Adverse events both expected and unexpected, related or unrelated to study device or procedure, graded according to the National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) Version 4.03