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Completed

NCT Number: NCT04843436

PRIMO Post-Market Clinical Follow Up Study

Post Market Clinical Follow up Study aimed to collect clinical data on safety and efficacy of Robotically Assisted System called Symani to perform microsurgery techniques such as anastomosis, suturing and ligation for open surgery procedures on small anatomical structures such as blood vessels, lymphatic ducts and nerves.

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Key information

Age range

18 year–100 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

LKH Salzburg, Universitätsklinik für Mund-, Kiefer- und Gesichtschirurgie, Salzburg, Austria

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About this study

PMCF study aimed to monitor the safety, usability, performance and long-term efficacy of Symani. Furthermore, it will permit to detect potential emerging risks related to safety on the basis of clinical evidence through the observation of patients who have undergone microsurgical reconstructions using the Symani Surgical System in the usual setting of standard surgical practice.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Male and female patients aged >18
  • Patients who need a reconstructive procedure and a microsurgical reconstruction is deemed the best option by the plastic, orthopedic or other surgeon in response to a post-oncological, post-traumatic or congenital tissue defect or to treat lymphedema.
  • Patients who have been selected by the PI at the Clinical Center as appropriate candidates for treatment with Symani System in accordance with the IFU.
  • Subjects who fit the criteria to perform surgery requiring reconstructions using free flaps, replantation, lymphatic reconstructions.
  • Subjects who agree to have the surgery and the anaesthesia.
  • Subjects who voluntarily decide to participate in this study with the surgery performed with the aid of the Symani System and sign the Informed Consent Form.

Exclusion criteria

  • Subjects who have bleeding or coagulation disorders in the past or present.
  • Any criteria that preclude prolonged anesthesia.
  • History of anaphylaxis or severe complicated allergy symptoms.
  • Clinically significant cardiovascular, digestive, respiratory, endocrine, or central nervous system disorders or previous mental disorders that may significantly affect the data collection or the ability to comply with the protocol.
  • Evidence or history of autoimmune disease or compromised immune system.
  • Participation in another clinical trial within 4 weeks prior to participation in the study.
  • Subjects belonging to vulnerable populations or ineligible to participate for other reasons by the PI at a Clinical Center.
  • Subjects with pacemaker

Treatment and study plan

Symani Surgical System

Device

Robotically Assisted Microsurgery

Primary outcomes

  1. Procedure Robotic Success

    Time frame: Duration of the robotic anastomotic portion of the participants index procedure

    Ability to complete the surgical task with Symani as intended by the surgeon

Secondary outcomes

  1. Anastomosis Time

    Time frame: Procedure

    Time to execute each fully robotic anastomosis.

    *Please note - three participants underwent a Free Flap and LVA surgery and therefore are accounted for in each cohort.

  2. Intraoperative Redo

    Time frame: Procedure

    Intraoperative need to repeat anastomosis

  3. Percentage of Participants With Postoperative Redo Within 7 Days

    Time frame: 7 days

    Post-operative redos were identified as the need to return to the operating room to explore anastomosis.

  4. Surgeon Assessment of Robotic Usability

    Time frame: 30 days

    Surgeons were asked to complete a questionnaire for each patient operated on using the study device.

    Success was defined as a response of complete or partial procedure success.

  5. Free Flap Survival at Discharge

    Time frame: discharge

    This effectiveness endpoint is assessed only for free flap procedures undertaken in the FAS. Subjects were assessed at the time of discharge for free flap survival status.For patients with free flap procedures, the average hospital stay was 11.9 days.

  6. Limb Volume Reduction (for Lymphatic Surgery)

    Time frame: 24 weeks

    Limb volume reduction

  7. Warm Ischemia Time

    Time frame: Procedure

    Time for warm ischemia

Sponsors and collaborators

Lead sponsor

MMI (Medical Microinstruments, Inc.)

Industry

Registry information

Official study title

Post-Market, Non-Randomized, Multicentre PMCF Study to Monitor the Safety and Performance of Symani System in Microsurgical Reconstructive Procedures in a Real Life Setting

Acronym: PRIMO

Important dates

Study start
2021
Primary completion
2025
Study completion
2025
First posted
Apr 13, 2021
Registry last updated
Jun 9, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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