RetracTOR/ Retractor for Image Guided Trans-Oral Surgery

NCT ID: NCT06381505

Last Updated: 2024-04-26

Basic Information

• Recruitment Status: NOT_YET_RECRUITING
• Total Enrollment: 20 participants
• Study Classification: OBSERVATIONAL
• Study Start Date: 2024-05-15
• Study Completion Date: 2025-12-31

Brief Summary

This study aims to demonstrate that a polymer retractor functions the same as a standard metal retractor used during endoscopy and throat surgery. The retractor is the device that holds the mouth open so the surgeon can easily access the mouth and throat. For example, this study aims to confirm that the mouth is held open the same amount with a polymer retractor as it is with a metal retractor. Benchtop experiments have demonstrated that the metal and polymer retractor's function the same, and thus this study will use this in patients.

Detailed Description

This study will include four stages of data collection: 1) Subject history, 2) intraoperative surgical working volume (SWV) assessment with stereoendoscopy and standard-of-care metal retractor, 3) intraoperative surgical working volume assessment with stereoendoscopy and 3D-printed polymer retractor, 4) intraoperative surgical working volume assessment with CT-imaging and 3D-printed polymer retractor.

The investigators will conduct a comparative study examining differences in surgical exposure within the same patient when retraction is enabled through use of standard-of-care metal retractor vs. our 3D printed retractor. Patients to be recruited for the study will include those who present to the Head and Neck Tumor Clinic at Dartmouth-Hitchcock Medical Center (DHMC) with suspicious lesions identified in the oropharynx, hypopharynx or larynx. Currently the clinic sees about 20 patients per month that are scheduled for staging endoscopy in the operating room. Consent will be obtained from all participating subjects prior to participation.

All surgeries will be performed at the Center for Surgical Innovation. Prior to surgery a standard-of-care Feyh-Kastenbauer (FK) or Crowe-Davis (CD) metal retractor will be positioned in the mouth of the patient and stabilized in suspension. A standard-of-care stereo vision endoscope will capture images of the oral cavity so that a 3D volume of the surgical working volume (SWV) can be measured. The time to place the retractor and surgical working volume metrics based on stereovision derived oral-cavity volumes and inter-incisive distance (IID) will be recorded. The FK and/or CD retractor will then be removed and replaced with our custom 3d-printed radiolucent retractor. The time to place this retractor and surgical working volume metrics based on stereovision derived oral-cavity volumes and inter-incisive distance will be recorded. A single CT scan with IV contrast will be obtained with the retractor in place and suspended. The standard surgical procedure will commence following routine methods. Following surgery, a second set of surgical working volume metrics based on stereovision derived oral-cavity volumes and inter-incisive distance will be recorded.

Conditions

Oral Cavity Disease

Study Design

• Observational Model Type: COHORT
• Study Time Perspective: PROSPECTIVE

Study Groups

custom device- radiolucent retractor

Custom device-radiolucent retractor used during staging endoscopy.

No interventions assigned to this group

Eligibility Criteria

Inclusion Criteria

1. Clinical diagnosis or suspected cancer the oral cavity, oropharynx, hypopharynx, or larynx requiring resection.

2. Undergoing staging endoscopy at DHMC

3. Ability to understand and the willingness to sign a written informed consent document.

4. Age ≥ 18 years old

5. For females of child bearing potential, a negative pregnancy evaluation per standard of care.

Exclusion Criteria

1. Prisoners

2. Adults with impaired decision-making capacity

3. Any condition for which, in the opinion of the investigator, contraindicates study participation.

4. Procedures that use high temperature generating devices such as laser

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• Minimum Eligible Age: 18 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Dartmouth College

OTHER

Sponsor Role: collaborator

Ryan J. Halter

OTHER

Sponsor Role: lead

Responsible Party

Ryan J. Halter

Investigator and Regulatory Sponsor

Responsibility Role: SPONSOR_INVESTIGATOR

Principal Investigators

Ryan J Halter, PhD

Role: PRINCIPAL_INVESTIGATOR

Dartmouth-Hitchcock, Lebanon

Locations

Dartmouth-Hitchcock Medical Center

Lebanon, New Hampshire, United States

Countries

United States

Central Contacts

Ryan J Halter, PhD

Role: CONTACT

Ryan.J.Halter@dartmouth.edu

603 646-0773

Kathy J Phipps, BA

Role: CONTACT

kathy.j.phipps@dartmouth.edu

603 646-5793

Facility Contacts

Joseph Paydarfar, MD

Role: primary

joseph.a.paydarfar@hitchcock.org

603-650-8123

Other Identifiers

STUDY02002103

Identifier Type: -

Identifier Source: org_study_id