A Prospective, Single-Center Investigation of the da Vinci SP® Surgical System in Anterior Mediastinal Disease

Study Overview
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Brief Summary
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Endpoints (Outcome measures)： Primary endpoint: Incidence of conversion rate during surgery - The primary performance endpoint will be assessed as the ability to successfully complete the planned mediastinal procedure with da Vinci SP System, with no conversion to open surgery, video-assisted thoracoscopic surgery (VATS), multi-port robotic surgery or approach requiring undocking of the da Vinci SP Surgical System in order to complete the planned procedure using the alternate approach. Use of additional assistant port(s) is not considered a conversion Secondary endpoints: Incidence of treatment related adverse events - The safety endpoint will be assessed as the incidence of all intra-operative and post-operative adverse events that occur through the 30-day follow up period

Detailed Description
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During the past several years, minimally invasive thoracic surgery has evolved from thoracoscopic approaches using 3 -4 ports to a single incision video-assisted thoracoscopic surgery (VATS) techniques. Recently, the experience acquired with the uniportal VATS technique through the intercostal space has allowed the development of a uniportal VATS subxiphoid or subcostal approach for anterior mediastinal tumor resections. The advantage of using a subxiphoid or subcostal entry is to reduce pain by avoiding possible trauma of intercostal nerves caused by thoracic incisions. However, the longer distance from the subxiphoid or subcostal incision to the anterior mediastinal area makes this approach more difficult to perform extended thymothymectomy. During this same period of evolution into uniportal VATS surgery, robotic thoracic surgery has gained popularity as an alternative to traditional VATS. The advantages of robotics are the ability to perform surgery more precisely with articulated or wristed instruments, motion scaling, and tremor filtration, as well as improved visualization thanks to 3D high-definition video. However, currently 4 -5 incisions are still necessary to perform anatomic robotic resections.Recently, there has been a convergence of these two trends-uniportal surgery and robotic-assisted surgery-and has resulted in a single port robotic system, the da Vinci SP by Intuitive Surgical Cooperation. For this new platform, investigators plan to practice in extended thymothymectomy

Official Title
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A Prospective, Single-Center Investigation of the da Vinci SP® Surgical System in Anterior Mediastinal Disease

Conditions
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Robotic Surgical Procedure, Thymoma, Myasthenia Gravis

Intervention / Treatment
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* Device: Da Vinci SP surgical platform


Participation Criteria
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Eligibility Criteria
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Inclusion criteria Age >20 and <75 years-old Willing and able to provide informed consent ASA≤ 3 The subject fulfills one or both of the following criteria: Diagnosis of myasthenia gravis Masaoka stage I or II thymoma; thymic mass ≤ 5 cm diameter Class I-IV Myasthenia gravis according to the Myasthenia Gravis Foundation of America Scientific Session (MGFA) Exclusion criteria. Myasthenia gravis or thymoma patients with Congestive heart failure (NHYA > II) Arrhythmia required medication control Subjects with a known bleeding or clotting disorder Subjects actively receiving therapeutic dose anticoagulation or anti-platelet medications at the time of operation Subjects under immunomodulatory within 30 days prior to the planned surgery Previous ipsilateral thoracic surgery or sternotomy Uncontrolled illness 6 months prior to planned surgical procedure including, but not limited to ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements Previous neoadjuvant medical and/or radiation therapy Subject has a contraindication for general anesthesia or surgery Uncontrolled myasthenia gravis symptoms at the time of scheduled surgery Confirmed thymic carcinoma Patients who are not suitable for performing endoscopic surgery. Myasthenia gravis patients with positive serum MuSK antibody. -

Ages Eligible for Study
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Minimum Age: 20 Years
Maximum Age: 75 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Intervention Model: Single Group Assignment
Interventional Model Description: thymothmectomy or extended thymectomy through Da Vinci SP platform
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Intervention<br>Patients with qualified criteria will be enrolled in this study | Device: Da Vinci SP surgical platform<br>* using Da Vinci SP platform in thymothymectomy or extended thymectomy<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Incidence of conversion rate | The primary performance endpoint will be assessed as the ability to successfully complete the planned procedure with da Vinci SP System, with no conversion to thoracoscopic, multi-port robotic, or open surgery. | During Surgery | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Incidence of Treatment-Emergent Adverse Events | The safety endpoint will be assessed as the incidence of all intra-operative and post-operative adverse events that occur through the 30-day follow up period. Rceord the Incidence of Treatment-Emergent Adverse Events in our recording form | One year | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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single incision robotic minimal invasive surgery, robotic mediastinal tumor resection, da Vinci SP® surgical system