CClinicalTrials.gg
CompletedNCT05674123Updated Jan 12, 2023

Evaluating the Safety and Effectiveness of the Flex Robotic System for the Surgical Removal of Colorectal Lesions

An interventional study of Colonoscopy and Endoscopic Ultrasound in Colorectal Neoplasm, sponsored by Mayo Clinic. Completed at 1 site in United States. Open to participants aged 22 Years and older. Per ClinicalTrials.gov, last updated 2023-01-12.

Sponsored by Mayo Clinic · Not applicable, Interventional, and Device feasibility

From the registry’s dates

  • Primary completion was Jun 2022, 4 years 3 months ago, and no results have been posted to the registry.
  • Registered 2 years 10 months after the study started (first participant enrolled Jan 2020, registered Dec 2022).
Phase
Not applicable
Study type
Interventional
Enrollment
2
Allocation
Not applicable
Ages
22 Years and older
Sex
All
01

Study summary

This clinical trial assesses the safety and effectiveness of a new device called the Flex Robotic System in the surgical removal (resection) of colorectal lesions. When an area of abnormal tissue called a lesion is found in the colon or rectum, it is often not known if the lesion is cancerous or non-cancerous. Recommendation to remove the lesion may be made. Current methods of resection can be challenging and time-consuming. The Flex Robotic System is a new device that provides a stable working environment, better ability to grasp and cut lesions, and better tissue handling when performing a resection. The Flex Robotic system may be more effective at removing colorectal lesions than standard resection techniques.

Read the detailed description

PRIMARY OBJECTIVE:

I. To assess the rates of complete en bloc resection and adverse events of the Flex Robotic System for distal colorectal lesions.

OUTLINE:

Patients undergo resection with Flex Robotic System on study. Patients also undergo colonoscopy with or without rectal endoscopic ultrasound at screening.

02

Conditions studied

  • Colorectal Neoplasm
03

In context

Colorectal Neoplasms

5,599 studies on the registry are indexed under Colorectal Neoplasms; 1,459 are open to participants now.

This study's enrollment of 2 is below the median of 77 across 4,123 interventional studies indexed under Colorectal Neoplasms.

Browse Colorectal Neoplasms studies →

Lead sponsor

Mayo Clinic is the lead sponsor of 3,218 studies on the registry; 670 are open to participants now.

Of its 445 completed or terminated interventional studies of FDA-regulated products, 313 (70%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
22 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Age >= 22 years (minimum age approved for use)
  • Polypoid (0-Is) and non-polypoid (0-IIa, 0-IIb and 0-IIc) lateral spreading lesions according to Paris classification
  • Colorectal lesions situated between 5 and 15 cm from the dentate line
  • Colorectal mucosal lesions ranging from 1.5 to 7 cm in maximum diameter
  • Colorectal subepithelial lesions \< 2 cm in size
  • Absence of uncorrectable bleeding disorder or coagulopathy
  • Platelet count > 50,000
  • International normalized ratio (INR) \< 1.5
  • Ability to give informed consent

Exclusion criteria

Exclusion Criteria:

  • Inability to receive general anesthesia
  • Presence of medical conditions for which a transanal approach is contraindicated (e.g., anal stricture, radiation proctopathy)
  • Excavated (0-III) colorectal lesions according to Paris classification
  • Suboptimal colon preparation
  • Clinical discretion of the provider
05

Study design

Phase
Not applicable
Primary purpose
Device feasibility
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
2 participants (actual)

Study arms

  • Experimental
    Device Feasibility (Flex Robotic System)

    Patients undergo resection with Flex Robotic System on study. Patients also undergo colonoscopy with or without rectal endoscopic ultrasound at screening.

    Procedure: Colonoscopy · Procedure: Endoscopic Ultrasound · Other: Medical Chart Review · Other: Medical Device Usage and Evaluation · Procedure: Resection

Interventions

  • ProcedureColonoscopy

    Undergo colonoscopy

  • ProcedureEndoscopic Ultrasound

    Undergo rectal endoscopic ultrasound

    Also known as: endosonography, EUS

  • OtherMedical Chart Review

    Ancillary studies

    Also known as: Chart Review

  • OtherMedical Device Usage and Evaluation

    Undergo resection with the Flex Robotic System

  • ProcedureResection

    Undergo resection with the Flex Robotic System

    Also known as: Robot-assisted surgical Resection

06

What researchers measure

Primary outcomes

  1. Rates of complete en bloc resection

    Rates of complete en bloc resection

    Time frame: Up to 2 years

  2. Incidence of adverse events

    The primary endpoint will be the Incidence of adverse events using the Flex Robotic System for distal colorectal lesions.

    Time frame: Up to 2 years

07

Study locations

1 site
  • Mayo Clinic in Rochester
    Rochester, Minnesota 55905, United States
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 12, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT05674123
Lead sponsor
Mayo Clinic
Collaborators
National Cancer Institute (NCI)
Responsible party
Sponsor
First posted
Jan 6, 2023
Start date
Jan 15, 2020
Primary completion
Jun 10, 2022
Completion
Jun 10, 2022
Last update
Jan 12, 2023

Study contacts

Louis M Wong Kee Song
principal investigator · Mayo Clinic in Rochester

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Dec 2022. You cannot join it, but the record below documents what was studied.

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