Clinical trial Recruiting at 1 site Interventional Ages 22 and up

Head and neck lymphedema treatment using the Symani robotic system

Official title: Clinical Lymphedema Evaluation - Advancing Reconstruction of Head and Neck Lymphatics With Symani

Run by MMI (Medical Microinstruments, Inc.) · NCT07311876 · Data updated 2026-11-12

This study tests whether the Symani Surgical System can safely and effectively help connect small blood and lymph vessels during head and neck lymphatic reconstruction.

Quick facts

Study typeInterventional
Ages22 Years and up
SexAll
Enrollment30 (estimated)
SponsorMMI (Medical Microinstruments, Inc.)
Industry-sponsored
Drugs / interventionschemotherapy, radiation
Locations1 site (Kiel)
StatusRecruiting
StartedJune 19, 2026
Main results expectedAugust 1, 2027
Study endsFebruary 1, 2028
Registry record updatedJuly 13, 2026
Trial IDNCT07311876 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults 22 years or older with acquired head and neck lymphedema (external or both external and internal) who require microsurgical vessel connections 0.1–2.5 mm and have completed decongestive therapy for at least 4 weeks.

Probably not a fit

Patients without suitable lymphatic anatomy for robotic-assisted microsurgical reconstruction or who do not respond to the procedure may not benefit.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This interventional study evaluates the safety and effectiveness of the Symani System for microsurgical lymphatic reconstruction in the head and neck. Eligible adults with acquired head and neck lymphedema undergo robotic-assisted microsurgical anastomosis as part of lymphatic reconstruction. The trial involves follow-up visits to monitor outcomes, with decongestive therapy and lymphatic mapping guiding the procedure. The study aims to determine if robotic assistance improves technical success and clinical relief of lymphedema compared to standard approaches.

Why it matters

Potential benefit: If successful, participants may experience improved lymphatic drainage and reduction in swelling in the head and neck region.

How similar studies have gone: Robotic-assisted microsurgical techniques have shown promise in select vascular/lymphatic reconstructions, but this application in head and neck lymphedema is relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. At least 22 years of age
2. Patients with acquired head and neck lymphedema with external lymphedema or both external and internal lymphedema
3. Patient agrees to participate in the study, return for all required follow-up visits, complete all study procedures, and has willingly provided written informed consent after receiving all information related to the study, its requirements, and the robotic-assisted procedure
4. Patient has a clinical indication for a microsurgical anastomosis of vessels between 0.1 and 2.5 mm in conjunction with lymphatic reconstruction of the head and neck
5. Patient has been compliant with complete decongestive therapy (CDT) for at least 4 weeks
6. Patient has undergone lymphatic mapping of the head and neck and functional lymphatic structures for reconstruction have been identified
7. Investigator deems the candidate acceptable for lymphatic reconstruction with a robotic-assisted microsurgical anastomosis in accordance with the Symani System's Instructions for Use (IFU)
8. Willingness to comply with recommended regimen of self-care, with consistent use of manual lymph drainage and/or appropriately sized compression garments from screening through the entire study duration (through the 6-month follow-up visit).

Exclusion Criteria:

1. Patient who is incapable and/or unwilling to provide informed consent
2. Patients with irreversible head and neck lymphedema, defined as stage 3 of the MD Anderson Cancer Center Head and Neck Lymphedema Rating Scale
3. Active systemic infection under treatment with intravenous antibiotics
4. Clinically significant cardiovascular, digestive, respiratory, endocrine, or central nervous system disorders, previous mental disorders, or other disorders that may significantly affect the data collection or the ability to comply with the protocol per the investigator's discretion
5. Known history of significant bleeding, coagulopathy, or Von Willebrand's disease
6. Currently receiving chemotherapy or radiation therapy (uncontrolled tumor)
7. A history of malignancy or cancer treatment within the past 6 months (tumor control)
8. Patient with unsatisfactory manual lymphatic drainage and/or compression garments for at least six months
9. Patient with prior lymphatic reconstruction in the targeted head \& neck area
10. Patient's lymphatic disease is due to lipedema
11. Patients with other medical conditions that could result in symptoms which overlap symptoms of lymphedema (e.g., thrombosis in the external or internal jugular vein)
12. Current infection in the head \& neck area in which lymphedema is present
13. Currently enrolled in any other investigational clinical studies that the investigator believes may impact patient safety or outcomes
14. Patient is ineligible to participate for other reasons in the judgement of the investigator

Where it's running

  • University Hospital Schleswig-Holstein
    Kiel, Germany
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.