The study involves the planned use of a new microwave-based device during colonoscopy procedures in a small group of patients to assess the preliminary safety of its use and lack of normal clinical practice modification. The device is a final design version, which has been previously tested in several preclinical studies, including: phantom studies, an ex vivo study with human tissues, and an in vivo study with animal model (pig).
This study is designed as a single-center prospective, non-comparative, first in human pilot safety and feasibility study with few patients, whereby data will be subject to an analytical description, rather than to a statistical treatment (refer to Statistical design and analysis). In this study the principal aim is to assess the clinical safety of the device and the feasibility of its use in assisted colonoscopy. Relevant claims to verify in this study are that the device can be used without ADEs, without any change in the current clinical practice, as well as without any major difficulty by the endoscopist, neither in the preparation nor in the use of the device during exploration. In addition, the study aims to gather real clinical data with the use of the device to optimise the processing software that will be key to demonstrate MiWEndo's performance on a subsequent clinical investigation (pivotal study). Consequently, principal and secondary objectives of this investigation, are: * Principal objectives: * To assess the feasibility of performing a complete colonoscopy using the MiWEndo System. * To assess the safety of MiWEndo colonoscopy. * Secondary objectives: * To assess the perception of difficulty by the endoscopist when the device is used. * To assess the patient's comfort. * To collect data on polyp detection performance to guide possible further improvements of the software before starting the pivotal study.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
DEVICE_FEASIBILITY
Masking
NONE
Enrollment
15
All colonoscopies will be performed with high-definition technology. The MiWEndo System (MiWEndo Solutions, Barcelona) will be fitted to the tip of the endoscope before colonoscopy is started and connected to the microwave processor unit. Endoscopies will be performed by experienced endoscopists who will be previously trained on the use of the MiWEndo System. At the beginning of the extubation, the MiWEndo System will be turned on. During extubation, each segment will be carefully examined with both white light and MiWEndo. In case one of them identifies a polyp, the exploration will be stopped and check if it has been detected by the alternative method as well. All the polyps will be resected and sent to the Pathological Department for histological analysis following the usual clinical practice. A stopwatch will be used to measure both total procedure time and withdrawal time.
Hospital Clínic
Barcelona, Spain
Number of incidents and adverse events
To assess the safety of MiWEndo colonoscopy using the lexicon proposed by the American Society of Gastrointestinal Endoscopy (ASGE).
Time frame: During the procedure and up to 2 weeks after
Number of mural injuries
To assess the safety of MiWEndo colonoscopy according to the Sydney classification for deep mural injuries (DMI)
Time frame: During the procedure
Rate of cecal intubation
To assess the feasibility of performing a complete colonoscopy using the MiWEndo System. This parameter will be measured as complete colonoscopy (yes/no).
Time frame: During the procedure
Length of colon explored
In case cecum could not be reached, the distance will be measured (in cm).
Time frame: During the procedure
Patients' comfort
Subjective assessment from patient following the Gloucester 5-Likert scale, where 1 is no discomfort and 5 is extreme discomfort.
Time frame: Immediately after the procedure and 2 weeks after
Time for reaching the cecum (or maximum explored colon length)
Measured in minutes
Time frame: During the procedure
Total time for completing the procedure
Measured in minutes
Time frame: Immediately after the procedure
Perception of difficulty
Difficulty by the endoscopist subjectively assessed based on a 5-points Likert scale, where 0 is not difficult and 4 is very difficult.
Time frame: Immediately after the procedure
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