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Stone Access and Removal (STAR) Study

Post-Operative Outcomes Following the Treatment of Kidney Stones With the MONARCH Platform, Urology

Status
Completed
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06330701
Acronym
STAR
Enrollment
15
Registered
2024-03-26
Start date
2024-01-18
Completion date
2025-03-11
Last updated
2026-02-18

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

Conditions

Kidney Calculi

Keywords

Nephrolithotomy, Percutaneous, Ureteroscopy, Robotic, Monarch, Kidney Calculi

Brief summary

The purpose of the study is to assess procedural completion, the post-operative stone clearance and the safety profile following robotic mini-Percutaneous Nephrolithotomy (PCNL) performed with the MONARCH Platform, Urology.

Interventions

This robotically enabled hybrid procedure called the MONARCH Mini-PCNL will allow the clinician to obtain retrograde and percutaneous access to participant's kidney under continuous visualization for therapeutic applications (i.e., stone removal).

Sponsors

Auris Health, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
OTHER
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
22 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Simple renal caliceal and/or pyelo stone(s) with stone burden =\> 1 cm, identified on CT scan, and appropriate for PCNL treatment according to AUA guidelines * Normal upper tract anatomy, amenable to PCNL and ureteroscopy * Participants with a percutaneous tract length \< 15 cm as measured by the estimation of the skin to stone or skin to appropriate calyx for treatment through a CT scan * Participant is an appropriate candidate for a mini-PCNL based on the clinical guidelines and investigator assessment.

Exclusion criteria

Pre-Procedure:

Design outcomes

Primary

MeasureTime frameDescription
Percentage of Participants Who Achieved Successful Completion of Robotic-Assisted Combined Intrarenal Surgery (RACIRS) Kidney Stone Removal ProcedureOn the day of procedure at Day 1Percentage of participants who achieved successful completion of the RACIRS kidney stone removal procedure were reported. Successful completion of the robotic-assisted kidney stone removal procedure was defined as using robotic-assistance provided by the MONARCH Platform, Urology to achieve the following procedure milestones: (1) gained safe concomitant (that is, retrograde and antegrade) access to the upper urinary tract, (2) located and visualized kidney stones, (3) enabled fragmentation of stones by standard of care method, (4) evacuated stone fragments and dust, and (5) completed treatment without need for case conversion, as assessed by the investigator.

Secondary

MeasureTime frameDescription
Stone Free RatePost-operative Day 30Stone free rate was computed as the percentage of participants who were stone free assessed by computed tomography (CT) scan at post-operative Day 30. Stone free was defined as having less than or equal to (\<=) 4 millimeters (mm) residual stones detected by CT.
Number of Participants With Adverse Events (AEs)From the day of procedure (Day 1) up to 90 days post-procedureAEs were defined as any undesirable clinical occurrence in a participant, whether or not it is considered to be device-related. Adverse events were graded using the Clavien-Dindo classification system. Clavien-Dindo consists of 7 grades (I, II, IIIa, IIIb, IVa, IVb and V). The introduction of the subclasses a and b allows a contraction of the classification into 5 grades (I, II, III, IV and V) depending on the size of the population. Grade I to II included deviations from normal recovery requiring minimal or pharmacologic treatment. Grade III to IV involved surgical/endoscopic/radiologic interventions or life-threatening complications, with subgrades based on anesthesia and organ dysfunction. Grade V represented death of the participant.
Percentage of Participants With Procedure Conversions to Conventional Treatment Methods Due to Study Device-related Safety EventOn the day of procedure (Day 1)Percentage of participants with procedures converted to conventional stone removal procedures (for example, ureteroscopy or percutaneous nephrolithotomy) due to the occurrence of a study device-related safety event was reported. A qualifying safety event was a study device-related adverse event that occurred during the study procedure, which prompted the physician to abort the study procedure, and pursue a conventional stone removal procedure.

Countries

United States

Contacts

PRINCIPAL_INVESTIGATORMargaret A. Knoedler, MD

University of Wisconsin, Madison

Baseline characteristics

Characteristic
Age, Continuous57.6 Years
STANDARD_DEVIATION 11.13
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
15 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
Number of Participants With Stone
1 Stone
5 Participants
Number of Participants With Stone
2 Stones
4 Participants
Number of Participants With Stone
3 Stones
2 Participants
Number of Participants With Stone
4 Stones
1 Participants
Number of Participants With Stone
6 Stones
2 Participants
Number of Participants With Stone
7 Stones
1 Participants
Participant-Level Pre-operative Linear Stone Burden35.1 Millimeters (mm)
STANDARD_DEVIATION 18.01
Participant-Level Pre-operative Stone Volume2959.3 Millimeter cube (mm^3)
STANDARD_DEVIATION 2246
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
0 Participants
Race (NIH/OMB)
Black or African American
1 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
White
14 Participants
Sex: Female, Male
Female
5 Participants
Sex: Female, Male
Male
10 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
0 / 15
other
Total, other adverse events
13 / 15
serious
Total, serious adverse events
1 / 15

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 19, 2026