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Assessing the da Vinci® Robotic Surgical System for Surgery of the Upper Aerodigestive Tract

A Pilot Study Assessing Transoral Robotic Surgery (TORS) For Oral And Laryngopharyngeal Benign And Malignant Lesions Using The da Vinci® Robotic Surgical System

Status
Terminated
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00721539
Enrollment
9
Registered
2008-07-24
Start date
2010-09-30
Completion date
2012-09-30
Last updated
2016-11-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Hypopharyngeal Neoplasms, Laryngeal Neoplasms, Head and Neck Cancers

Brief summary

To assess the use of the da Vinci® Robotic Surgical System (Intuitive Surgical, Inc., Sunnyvale, CA) in transoral surgeries in patients with benign and malignant lesions of the oral cavity and laryngopharynx.

Detailed description

In the past two decades the interest in minimally invasive techniques for transoral treatment of head and neck benign and malignant lesions has been growing due to the decreased morbidity of transoral approaches, and some surgeons have been moving away from traditional open resections. Transoral resection of neoplasms of the upper aerodigestive, by its minimally invasive nature, may afford a shorter hospitalization and recovery time for patients when compared to those patients who undergo traditional open surgery. In surgery of the oropharynx, hypopharynx, and larynx, transoral endoscopic surgery can provide similar outcomes in terms of local control of disease when compared to open procedures, while improving time to restoration of oral intake and shortening time to tracheostomy decannulation. Therefore, in select patients, a transoral surgical approach may afford clear advantages over traditional open approaches. Current techniques, however, are limited by the inability to attain direct line of site exposure of the lesion. Use of robot-assisted technology as a means to overcome surgical limitations, to provide surgeons with improved dexterity and precision, and to couple advanced imaging techniques with three-dimensional depth perception, may allow for the completion of transoral surgical approaches in patients for whom conventional technology has been suboptimal. The da Vinci® Robotic Surgical System (Intuitive Surgical, Inc., Sunnyvale, CA) is FDA-approved for use in a variety of laparoscopic, thoracoscopic, cardiac, and urologic surgical procedures. This protocol will assess the use of the da Vinci® Robotic Surgical System (Intuitive Surgical, Inc., Sunnyvale, CA) in transoral surgeries in patients with benign and malignant lesions of the oral cavity and laryngopharynx. Traditional endoscopic removal of tumors of the oropharynx and laryngopharynx is usually preferred to traditional open resection because of the decrease in morbidity and improved functional outcomes experienced by patients. The limiting step in these procedures has been exposure of, visualization of, and access to candidate tumors. The da Vinci surgical system offers the possibility of significant improvements in exposure, visualization and access to these candidate tumors with no added risk to patients. Overall this may significantly increase the number of patients who are candidates for endoscopic surgery. Alternative procedures will include traditional open surgical removal of tumors as well as traditional endoscopic removal of tumors using the microscope and CO2 laser. Open surgical approaches are reserved for patients who have large tumors unsuitable for endoscopic removal or in whom endoscopic visualization of the tumor is inadequate or impossible. The da Vinci surgical system would offer improved visualization of tumors that might otherwise be inaccessible to a traditional endoscopic approach. Candidate patients will present with a neoplasm of the oropharynx, hypopharynx or larynx. Those patients assessed preoperatively to be candidates for transoral surgery (eg, Mallampati class I or II, normal range of neck motion, no trismus) will undergo surgery via a transoral approach to resect the tumor. This will require general anesthesia and may require postoperative hospitalization. If the tumor can be accessed, resection will proceed using the da Vinci robot. In whom the tumor cannot be accessed, resection will proceed via the conventional open approach. Pre and postoperative care will not be affected by this protocol, as it deals strictly with the manner in which the tumor is removed. Postoperative care and visits are standardized as to the nature of the tumor (eg, malignant tumors usually require follow-up visits every four to six weeks to monitor for tumor recurrence). Complications, blood loss, operative time, length of hospitalization, time to resumption of oral intake, time to decannulation, and overall local control rates will be assessed in the postoperative period.

Interventions

DEVICEda Vinci Surgical Robot Platform

daVinci Surgical Robot Platform is a surgical device that enhances transoral access to the upper aerodigestive tract through miniaturization of endoscopes and micromanipulators that can be introduced through the mouth.

Eligible patients will undergo transoral treatment of neoplastic disease of the upper aerodigestive tract using the daVinci Surgical Robot Platform as opposed to traditional (TOL - transoral laser; TEC - transoral electrocautery) methods.

Sponsors

Stanford University
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
HEALTH_SERVICES_RESEARCH
Masking
NONE

Eligibility

Sex/Gender
MALE
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Patient or volunteer is 18 years of age or older * Patients must have indication for diagnosis and/or therapy of diseases of the oropharynx, hypopharynx, and/or larynx.

Exclusion criteria

* unexplained fever and/or untreated * active infection * pregnancy * anatomic parameters which preclude transoral surgery, such as: 1. trismus 2. limited range of neck motion 3. poor dentition 4. redundant hypopharyngeal or supraglottic tissue which would prevent adequate visualization of the tumor * participation in a research protocol which precludes participation in other protocols

Design outcomes

Primary

MeasureTime frameDescription
Overall Complication Rate (Intraoperative and Postoperative)Six weeksComplications encountered intraoperatively or up to six weeks postoperatively. This would include injury to patient, hemorrhage, lacerations, and readmission following surgery.

Secondary

MeasureTime frameDescription
Feasibility Defined as Ability to Perform the Planned Diagnostic or Therapeutic ProcedureSix weeks
Average Blood LossDuration of procedure up to two hoursBlood lost during procedure
Average Operative TimeUp to four hours (240 minutes)Average operative time in minutes

Countries

United States

Participant flow

Recruitment details

Patients recruited through tertiary care medical center specializing in head and neck cancer; enrollment dates 9/2010 to 9/2012.

Pre-assignment details

Exclusion criteria include unexplained fever, active infection, pregnancy, anatomic parameters which preclude surgery including trismus, limited range of neck motion, poor dentition, and physical features such as redundant hypopharyngeal tissues which prevent adequate exposure of tumor.

Participants by arm

ArmCount
Transoral Robotic Surgery
Pilot study; single arm - use of da Vinci Surgical Robot Platform to access neoplastic disease of the upper aerodigestive tract. da Vinci Surgical Robot Platform: daVinci Surgical Robot Platform is a surgical device that enhances transoral access to the upper aerodigestive tract through miniaturization of endoscopes and micromanipulators that can be introduced through the mouth. Transoral Robotic Surgery: Eligible patients will undergo transoral treatment of neoplastic disease of the upper aerodigestive tract using the daVinci Surgical Robot Platform as opposed to traditional (TOL - transoral laser; TEC - transoral electrocautery) methods.
9
Total9

Baseline characteristics

CharacteristicTransoral Robotic Surgery
Age, Categorical
<=18 years
1 Participants
Age, Categorical
>=65 years
1 Participants
Age, Categorical
Between 18 and 65 years
7 Participants
Age, Continuous41.5 Years
Gender
Female
2 Participants
Gender
Male
7 Participants
Region of Enrollment
United States
9 participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
— / —
other
Total, other adverse events
0 / 9
serious
Total, serious adverse events
0 / 9

Outcome results

Primary

Overall Complication Rate (Intraoperative and Postoperative)

Complications encountered intraoperatively or up to six weeks postoperatively. This would include injury to patient, hemorrhage, lacerations, and readmission following surgery.

Time frame: Six weeks

Population: Subjects enrolled in this pilot study.

ArmMeasureValue (NUMBER)
Transoral Robotic SurgeryOverall Complication Rate (Intraoperative and Postoperative)0 Participants
Secondary

Average Blood Loss

Blood lost during procedure

Time frame: Duration of procedure up to two hours

Population: Participants

ArmMeasureValue (MEAN)
Transoral Robotic SurgeryAverage Blood Loss50 mL
Secondary

Average Operative Time

Average operative time in minutes

Time frame: Up to four hours (240 minutes)

Population: Participants

ArmMeasureValue (MEAN)
Transoral Robotic SurgeryAverage Operative Time112 Minutes
Secondary

Feasibility Defined as Ability to Perform the Planned Diagnostic or Therapeutic Procedure

Time frame: Six weeks

Population: Adult patients 18 years of age and over

ArmMeasureValue (NUMBER)
Transoral Robotic SurgeryFeasibility Defined as Ability to Perform the Planned Diagnostic or Therapeutic Procedure9 Participants

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026