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InterStim Micro Post Market Clinical Follow-up Study (ELITE)

Evaluation of InterStim Micro System Performance and Safety (ELITE) to Confirm Long-Term Outcomes - Post Market Clinical Follow-Up Study

Status
Terminated
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04506866
Acronym
ELITE
Enrollment
148
Registered
2020-08-10
Start date
2020-08-25
Completion date
2023-12-08
Last updated
2024-12-27

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

Conditions

Fecal Incontinence, Non-obstructive Urinary Retention, Overactive Bladder

Brief summary

Post-market clinical follow-up for continued assessment of safety and performance to confirm long-term outcomes of the InterStim Micro System for sacral neuromodulation.

Interventions

DEVICEInterStim Micro

Eligible subjects will receive InterStim Micro therapy. Commercial devices will be used within their intended use as described in each geography's approved instructions for use

Sponsors

MedtronicNeuro
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

Overactive Bladder Cohort Inclusion Criteria: 1. Have a diagnosis of OAB as demonstrated on a 3-day voiding diary with greater than or equal to 8 urgency frequency episodes per day and/or by having a minimum of 3 episodes of urinary urge incontinence in 72 hours 2. Subjects 18 years of age or older 3. Candidate for sacral neuromodulation therapy in accordance with the InterStim Micro System labeling 4. Willing and able to accurately complete study diaries, questionnaires, attend visits, device recharging and comply with the study protocol 5. Willing and able to provide signed and dated informed consent

Exclusion criteria

1. Have neurological conditions such as multiple sclerosis, clinically significant peripheral neuropathy or spinal cord injury (e.g., paraplegia) 2. Have primary stress incontinence or mixed incontinence where the stress component overrides the urge component 3. Current urinary tract mechanical obstruction (e.g. benign prostatic enlargement or urethral stricture) 4. Have had treatment of urinary symptoms with botulinum toxin therapy in the past 12 months 5. Have knowledge of planned shortwave diathermy, microwave diathermy, or therapeutic diathermy 6. Women who are pregnant or planning to become pregnant 7. Characteristics indicating a poor understanding of the study or characteristics that indicate the subject may have poor compliance with the study protocol requirements. 8. Concurrent participation in another clinical study that may add additional safety risks and/or confound study results. Fecal Incontinence Cohort Inclusion Criteria: 1. Have a diagnosis of fecal incontinence as demonstrated by a 7-day bowel diary as greater than or equal to 2 incontinent episodes of more than staining (i.e., either slight, moderate or severe soiling) 2. Subjects 18 years of age or older 3. Candidate for sacral neuromodulation therapy in accordance with the InterStim Micro System labeling 4. Willing and able to accurately complete study diaries, questionnaires, attend visits, device recharging and comply with the study protocol 5. Willing and able to provide signed and dated informed consent

Design outcomes

Primary

MeasureTime frameDescription
Change From Baseline for HRQL Total Score3 monthsThe Overactive Bladder Quality of Life Questionnaire (OAB-q) is a 33-item validated questionnaire that was developed to assess symptom bother and the impact of overactive bladder (OAB) on health-related quality of life (HRQL).8 Specifically, The OAB-q consists of an 8-item symptom bother scale and 25-item HRQL scale with 4 domains: coping (8 items), concern/worry (7 items), sleep (5 items) and social interaction (5 items). The score for each of OAB-q domain are summed and transformed to a score ranging from zero to 100. We are reporting the change from baseline for HRQL total score. If the change is positive, it means a better quality of life. The higher the positive change is, the better the quality of life is.
Change From Baseline in CCIS Score3 monthsThe Cleveland Clinic Incontinence Score (Wexner Score) is an established 5-item questionnaire that was developed to assess the frequency and severity of fecal incontinence. CCIS-Wexner score ranges between 0 and 20. Higher scores indicate worse incontinence. We are reporting the change from baseline for CCIS Score. If the change is negative, the quality of life improved from baseline. The more negative the score is, the better the quality of life is.
Change From Baseline in the Number of CISC/Day3 monthsSubjects reported the clean intermittent self-catheterizations on voiding diaries for 7 consecutive days. We are reporting the change from baseline. If the change is negative, the quality of life is improved from baseline.

Countries

Canada, France, Netherlands, Switzerland, United Kingdom, United States

Participant flow

Participants by arm

ArmCount
Overactive Bladder Cohort
Subjects with overactive bladder will be treated with InterStim Micro Therapy and followed-up regarding their overactive bladder symptoms.
68
Fecal Incontinence Cohort
Subjects with fecal incontinence will be treated with InterStim Micro Therapy and followed-up regarding their fecal incontinence symptoms.
53
Non-Obstructive Urinary Retention Cohort
Subjects with non-obstructive urinary retention will be treated with InterStim Micro Therapy and followed-up regarding their non-obstructive urinary retention symptoms.
27
Total148

Baseline characteristics

CharacteristicOveractive Bladder CohortTotalFecal Incontinence CohortNon-Obstructive Urinary Retention Cohort
Age, Continuous62 years
STANDARD_DEVIATION 13.2
57 years
STANDARD_DEVIATION 15.1
58 years
STANDARD_DEVIATION 11
43 years
STANDARD_DEVIATION 17.9
Clean intermittent self-catheterizations (CISC) per day5 Clean intermittent self-catheterizations
STANDARD_DEVIATION 2.3
5 Clean intermittent self-catheterizations
STANDARD_DEVIATION 2.3
Cleveland Clinic Incontinence Score (CCIS)14 Score
STANDARD_DEVIATION 2.9
14 Score
STANDARD_DEVIATION 2.9
Overactive Bladder Quality of Life (OAB-q) Questionnaire Health Related Quality of Life (HRQL)44 Total Score
STANDARD_DEVIATION 21.7
44 Total Score
STANDARD_DEVIATION 21.7
Race/Ethnicity, Customized
Asian
0 Participants1 Participants0 Participants1 Participants
Race/Ethnicity, Customized
Black
5 Participants9 Participants4 Participants0 Participants
Race/Ethnicity, Customized
Hispanic
1 Participants3 Participants2 Participants0 Participants
Race/Ethnicity, Customized
SPANISH/HISPANIC/LATINA
0 Participants1 Participants1 Participants0 Participants
Race/Ethnicity, Customized
White
54 Participants100 Participants37 Participants9 Participants
Region of Enrollment
Canada
4 participants19 participants12 participants3 participants
Region of Enrollment
France
8 participants21 participants7 participants6 participants
Region of Enrollment
Netherlands
0 participants1 participants0 participants1 participants
Region of Enrollment
Switzerland
0 participants2 participants2 participants0 participants
Region of Enrollment
United Kingdom
0 participants10 participants0 participants10 participants
Region of Enrollment
United States
56 participants95 participants32 participants7 participants
Sex: Female, Male
Female
61 Participants135 Participants48 Participants26 Participants
Sex: Female, Male
Male
7 Participants13 Participants5 Participants1 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
1 / 680 / 530 / 27
other
Total, other adverse events
5 / 688 / 5314 / 27
serious
Total, serious adverse events
3 / 688 / 534 / 27

Outcome results

Primary

Change From Baseline for HRQL Total Score

The Overactive Bladder Quality of Life Questionnaire (OAB-q) is a 33-item validated questionnaire that was developed to assess symptom bother and the impact of overactive bladder (OAB) on health-related quality of life (HRQL).8 Specifically, The OAB-q consists of an 8-item symptom bother scale and 25-item HRQL scale with 4 domains: coping (8 items), concern/worry (7 items), sleep (5 items) and social interaction (5 items). The score for each of OAB-q domain are summed and transformed to a score ranging from zero to 100. We are reporting the change from baseline for HRQL total score. If the change is positive, it means a better quality of life. The higher the positive change is, the better the quality of life is.

Time frame: 3 months

Population: This score is applicable only for the OAB cohort.

ArmMeasureValue (MEAN)Dispersion
Overactive Bladder CohortChange From Baseline for HRQL Total Score33 Total score on a scaleStandard Deviation 24.2
Primary

Change From Baseline in CCIS Score

The Cleveland Clinic Incontinence Score (Wexner Score) is an established 5-item questionnaire that was developed to assess the frequency and severity of fecal incontinence. CCIS-Wexner score ranges between 0 and 20. Higher scores indicate worse incontinence. We are reporting the change from baseline for CCIS Score. If the change is negative, the quality of life improved from baseline. The more negative the score is, the better the quality of life is.

Time frame: 3 months

Population: This score is only applicable for FI subjects.

ArmMeasureValue (MEAN)Dispersion
Fecal Incontinence CohortChange From Baseline in CCIS Score-4.06 score on a scaleStandard Deviation 3.696
Primary

Change From Baseline in the Number of CISC/Day

Subjects reported the clean intermittent self-catheterizations on voiding diaries for 7 consecutive days. We are reporting the change from baseline. If the change is negative, the quality of life is improved from baseline.

Time frame: 3 months

Population: This measure applies only to subjects in the NOUR Cohort.

ArmMeasureValue (MEAN)Dispersion
Non-Obstructive Urinary Retention CohortChange From Baseline in the Number of CISC/Day-3.52 Number of CISC/DayStandard Deviation 2.901

Source: ClinicalTrials.gov · Data processed: Feb 5, 2026