ClinicalTrials.gg
CompletedNCT05835323Updated Jul 8, 2025Results posted

Initial Clinical Experience With the MONARCH Platform, Urology for the Treatment of Kidney Stones

An interventional study of Robotic-assisted mini-PCNL in Kidney Calculi, sponsored by Auris Health, Inc.. Completed at 1 site in United States. Open to participants aged 22 Years and older. Per ClinicalTrials.gov, last updated 2025-07-08.

Sponsored by Auris Health, Inc. (part of Johnson & Johnson) · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Registered 3 months after the study started (first participant enrolled Jan 2023, registered Apr 2023).
Phase
Not applicable
Study type
Interventional
Enrollment
15
Allocation
Not applicable
Ages
22 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 193 studies in Kidney Calculi with a site in United States — 42 open to participants now, 58 under way, none of them phase 3. Kidney Calculi · United States.

Enrollment
125th of 165
15 · median 47
Started
2023
with 10 others
No phase
113 of 193
29 open now
Registered
145th of 193
by date

Among the 193 studies in Kidney Calculi with a site in United States, this one is the 125th largest by enrollment of the 165 interventional ones that give a count, is one of 11 that started in 2023, is one of 113 with no phase, and was the 145th registered.

Kidney Calculi

509 studies on the registry are indexed under Kidney Calculi; 146 are open to participants now.

Browse Kidney Calculi studies →

Open to participants now

42 of the 193 studies in Kidney Calculi with a site in United States are open now. Recruiting first, the newest first:

37 more — sign in →

All 42 open studies →

A study can be open while its sites in United States have not opened yet or have stopped. Only those recruiting at a site in United States →

Who these studies take

Of the 88 Kidney Calculi studies recruiting now, 48 (55%) set no upper age limit and 23 (26%) stop at 75 or younger; 6 take children under 18; 11 take healthy volunteers.

This study: 22 Years and older · all sexes · no healthy volunteers.

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02

Study summary

The purpose of this study is to collect descriptive performance data using the MONARCH Platform, Urology (a novel robotic device) to perform mini-percutaneous nephrolithotomy (kidney stone removal) procedures. Data gathered from this study will be used to optimize the robotic platform and inform training and education material for the future users.

03

Conditions studied

  • Kidney Calculi

Browse trials for

Keywords

  • Nephrolithotomy, Percutaneous, Ureteroscopy, Robotic, Monarch, Kidney Calculi
04

Who can participate

Ages eligible
22 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Eligibility criteria

Inclusion Criteria:

  • Simple renal caliceal and/or pyelo stone(s), greater than or equal to (>=) 10 millimeter in size identified on computerized tomography (CT) scan, and appropriate for Percutaneous nephrolithotomy (PCNL) treatment according to American Urological Association (AUA) guidelines
  • Normal upper tract anatomy, amenable to PCNL and ureteroscopy
  • less than (\<) 40 kilogram-meter squared
  • Participants with a percutaneous tract length \<15 centimeter 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

Pre-Operative Exclusion Criteria:

  • Any medical or physical condition/limitation that would contraindicate a conventional ureteroscopy or PCNL [for example, atypical interposition of visceral organs (bowel, spleen, or liver)] in the supine position. This assessment will be made by the investigator team
  • Participation in any other clinical trial 30-days before and throughout the duration of the study that might impact the results
  • A solitary functioning kidney
  • Female subjects who are pregnant or nursing or those of refusing a pregnancy test
  • Presence of ureteral impacted stones
  • Presence of ureteral obstruction
  • Presence of untreated urinary tract infection, urosepsis
  • Inability to give consent
  • Presence of a renal mass which has not been investigated
  • Staghorn stone
  • Participant has an electrically or magnetically activated implanted medical device
  • Significant pharmacological anticoagulant therapy or uncorrected bleeding diathesis
  • Tumor in the probable access tract area and potential malignant renal tumor

Intra-Procedure Exclusion Criteria:

- Any presenting condition discovered intra procedurally that in the opinion of the investigator would make participating in this study not in the participant's best interest. For example, participants no longer considered good candidates for a mini-PCNL procedure for the removal of the kidney stones.

Terms in these criteria, in plain language(2)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
15 participants (actual)

Study arms

  • Experimental
    Robotic-assisted mini-Percutaneous Nephrolithotomy (PCNL)

    Participants with kidney stones will be enrolled for robotic-assisted mini-percutaneous nephrolithotomy procedure using the MONARCH Platform, Urology for removal of kidney stones. The MONARCH Platform, Urology enables electro-mechanical articulation and precise control of a flexible ureteroscope and/or a flexible mini-PCNL suction catheter for visualization and access to the urinary tract for diagnostic and therapeutic procedures.

    Device: Robotic-assisted mini-PCNL

Interventions

  • DeviceRobotic-assisted mini-PCNL

    Eligible participants will be enrolled to undergo robotic-assisted PCNL using the MONARCH Platform, Urology for the removal of kidney stones. The MONARCH Platform, Urology is a novel flexible robotic device that enables the clinician to obtain both transurethral and percutaneous access to a participant's kidney under continuous visualization for therapeutic application (for example, stone removal).

06

What researchers measure

Primary outcomes

  1. Completion of the Robotic Assisted Mini-PCNL Kidney Stone Removal Procedure.

    Percentage of participants in whom the kidney stone treatment and removal procedure could be successfully completed with the MONARCH™ Platform, Urology.

    Time frame: Day of Procedure

07

Results

Posted Oct 15, 2024
Limitations and caveats
This was a single-arm, single-center, first-in-human experience with the MONARCH™ Platform, Urology in a small set of participants without a control arm. As such the generalizability of the results obtained are limited.

Participant flow

Participants aged 22 years or older with simple renal caliceal and/or pyelo stone(s), greater than or equal to 10 millimeters in size identified on computed tomography scan, and appropriate for percutaneous nephrolithotomy (PCNL) treatment according to American Urological Association guidelines were considered for the study. Participants were given the Informed Consent Form to read, ask questions, and sign prior to any study procedures being performed or data being collected.

Participant flow — Overall Study
MilestoneRobotic Mini-PCNL
Started13
Completed13
Not completed0

Outcome measures

PrimaryCompletion of the Robotic Assisted Mini-PCNL Kidney Stone Removal Procedure.

Percentage of participants in whom the kidney stone treatment and removal procedure could be successfully completed with the MONARCH™ Platform, Urology.

Time frame:
Day of Procedure
Reported as:
Count of participants · Participants
Completion of the Robotic Assisted Mini-PCNL Kidney Stone Removal Procedure.
ParticipantsRobotic Mini-PCNL
Completion of the Robotic Assisted Mini-PCNL Kidney Stone Removal Procedure.12

Adverse events

Collected over 30 days post stone removal procedure. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Robotic Mini-PCNL0/13 (0%)1/13 (7.7%)2/13 (15.4%)
Most frequent serious events
Most frequent serious events
EventRobotic Mini-PCNL
BacteraemiaInfections and infestations1/13
Most frequent other events
Most frequent other events
EventRobotic Mini-PCNL
Urinary tract infectionInfections and infestations1/13
Ureteric injuryInjury, poisoning and procedural complications1/13

Baseline characteristics

All 13 participants who started the study are included in all summaries of baseline characteristics, outcome measures and adverse events.

Age, Continuous
Age, Continuous(Years)Robotic Mini-PCNL
Mean60.8 ± 11.22
Sex: Female, Male
Sex: Female, Male(Participants)Robotic Mini-PCNL
Female6
Male7
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Robotic Mini-PCNL
American Indian or Alaska Native0
Asian2
Native Hawaiian or Other Pacific Islander0
Black or African American0
White11
More than one race0
Unknown or Not Reported0
08

Study locations

1 site
  • University of California - Irvine Medical Center
    Orange, California 92868, United States
09

References and documents

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: No

10

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Jan 2023 to primary completion in Sep 2023, 8 months.

Results were first posted in Oct 2024, 1 year after primary completion.

Of 199 interventional studies with no phase under Kidney Calculi, half reached primary completion within 26 months of starting (the median), counting those still running; a quarter within 12 and three quarters within 51. This study's 8 months is below that.

How these figures are worked out, and which studies are left out of them.

Registered
Apr 18, 2023
First posted
Apr 28, 2023
StartActual
Jan 11, 2023
Primary completionActual
Sep 25, 2023
CompletionActual
Nov 1, 2023
Results first posted
Oct 15, 2024
Last update
Jul 8, 2025
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jul 8, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT05835323
Lead sponsor
Auris Health, Inc.
Responsible party
Sponsor
First posted
Apr 28, 2023
Start date
Jan 11, 2023
Primary completion
Sep 25, 2023
Completion
Nov 1, 2023
Results posted
Oct 15, 2024
Last update
Jul 8, 2025

Study contacts

Jaime Landman, MD
principal investigator · University of California, Irvine

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
Yes
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Jul 2025. You cannot join it, but the record below documents what was studied.

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