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PRIMO Post-Market Clinical Follow Up Study

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

Status
Completed
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04843436
Acronym
PRIMO
Enrollment
427
Registered
2021-04-13
Start date
2021-04-13
Completion date
2025-07-18
Last updated
2026-06-09

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

Conditions

Blood Vessels, Lymphatic Ducts and Nerves, Free Flaps, Open Surgery

Keywords

microsurgery, RASM, free flap, lymphatic ducts, Symani

Brief summary

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.

Detailed description

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.

Interventions

Robotically Assisted Microsurgery

Sponsors

MMI (Medical Microinstruments, Inc.)
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 100 Years
Healthy volunteers
No

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

Design outcomes

Primary

MeasureTime frameDescription
Procedure Robotic SuccessDuration of the robotic anastomotic portion of the participants index procedureAbility to complete the surgical task with Symani as intended by the surgeon

Secondary

MeasureTime frameDescription
Anastomosis TimeProcedureTime 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.
Intraoperative RedoProcedureIntraoperative need to repeat anastomosis
Percentage of Participants With Postoperative Redo Within 7 Days7 daysPost-operative redos were identified as the need to return to the operating room to explore anastomosis.
Surgeon Assessment of Robotic Usability30 daysSurgeons 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.
Free Flap Survival at DischargedischargeThis 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.
Limb Volume Reduction (for Lymphatic Surgery)24 weeksLimb volume reduction
Warm Ischemia TimeProcedureTime for warm ischemia

Countries

Austria, Belgium, Finland, Germany, Italy, Spain, Switzerland

Contacts

PRINCIPAL_INVESTIGATORMarco Innocenti, Prof.

Istituto Ortopedico Rizzoli Bologna

Baseline characteristics

Characteristic
Age, Continuous53.8 years
STANDARD_DEVIATION 13.39
Race/Ethnicity, Customized
Asian
5 Participants
Race/Ethnicity, Customized
Black
10 Participants
Race/Ethnicity, Customized
Caucasian
400 Participants
Race/Ethnicity, Customized
Other
6 Participants
Region of Enrollment
Austria
6 participants
Region of Enrollment
Belgium
73 participants
Region of Enrollment
Finland
26 participants
Region of Enrollment
Germany
191 participants
Region of Enrollment
Italy
43 participants
Region of Enrollment
Spain
83 participants
Region of Enrollment
Switzerland
5 participants
Sex: Female, Male
Female
279 Participants
Sex: Female, Male
Male
147 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
0 / 2740 / 1290 / 12
other
Total, other adverse events
51 / 2749 / 1292 / 12
serious
Total, serious adverse events
20 / 2742 / 1290 / 12

Outcome results

None listed

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