Safety and Performance of UCon Patch Electrode

The overall purpose of this pivotal clinical investigation is to evaluate the UCon device with a Patch Electrode with respect to clinical safety and device performance in a cohort of 180 patients with OAB/BD over a period of 12 weeks.

The participants participate in a 12-week intervention period. For weeks 1-6, participants will be randomized (2:1 randomization) to either a treatment group using UCon-Patch with Time Limited stimulation or a sham group using UCon-Sham with sham stimulation. Participants in the treatment group will receive the actual stimulation with the intent of improving their symptoms, whereas those in the sham group will receive sham stimulation for short periods of time believed not to be capable of improving their symptoms.

For weeks 7-12 of the intervention periods, the treatment group has the opportunity to add Urge stimulation to the Time Limited stimulation, while the sham group shifts to using UCon-Patch Time Limited stimulation.

To assess the safety and performance of the UCon device on equal terms with similar devices in the market, the full intervention period with UCon will be conducted over 12 weeks, evaluating safety aspects of UCon on longer terms and confirming continued effects after 6 weeks in the treatment group. Additional analyses on data related to primary and secondary endpoints with safety and performance data from the 12-week follow-up will also be performed, but the primary analysis will focus on baseline and 6-week follow-up data.

Inclusion criteria

• Participant is ≥ 18 years of age.
• Participant is diagnosed with OAB or BD.
• Participant is able to consent, communicate, provide feedback, and understand and follow instructions in Danish during the course of the investigation, including operation of the device at home.

Exclusion criteria

• Participant has genital anatomy that does not allow for proper electrode placement or stimulation of the DGN.
• Participant has an active infection in the genital area, including skin infections.
• Participant has injured or irritated skin in the genital area, where the electrode is placed.
• Participant is medically unstable (acute illness or complication of a chronic condition, apart from the OAB or BD, that might affect the participant's participation in the investigation).
• Participant has an implanted pacemaker, implantable drug pump or other active medical devices (any medical device that uses electrical energy or other sources of power to make it function).
• Participant is pregnant, nursing, planning a pregnancy (to be confirmed with a negative pregnancy test) or has given birth within the previous 12 months. Women of childbearing potential must maintain effective contraception* during the clinical investigation.
• Participant is enrolled or planning to enroll in another conflicting clinical investigation or was enrolled in an investigational drug trial within the previous 12 weeks or medical device investigation within 12 weeks of enrolment.
• Participant has previously participated in a clinical investigation with UCon.
• Participant has failed (lack of effectiveness) other neuromodulation treatments, e.g. sacral neuromodulation (SNM) within the previous 2 years.
• Participant has a neurological disease, e.g., chronic inflammatory demyelinating polyneuropathy, multiple sclerosis, stroke, central nervous system (CNS) tumors, Parkinson´s, spinal cord injury, diabetic neuropathy, Guillain-Barré syndrome.
• Participant has a history of cancer in the pelvic region, is currently receiving cancer treatment, or has received radiation therapy in the pelvic region.
• Participant had surgery in the pelvic region within the previous 6 months. If it can be excluded that the participant's symptoms are related to the surgery, they can be included in the clinical investigation.
• Participant has addictive behavior defined as the abuse of alcohol, cannabis, opioids, or other intoxicating drugs.

• The following contraception is considered effective: Intrauterine device, hormonal contraceptives such as birth control pills, implants, contraceptive patch, vaginal ring, and contraceptive injection.

Exclusion criteria

specific for OAB:

• Participant is planning or has a scheduled surgery/diagnostic procedure (within the duration of their participation) for any condition, that would require catheterization. Or have a prolonged hospitalization that would affect the ability to complete the stimulation.
• Participant (male) has symptoms of bladder outlet obstruction, e.g., caused by benign prostatic hyperplasia or prostate cancer.
• Participant has polyuria or symptoms of polyuria.
• Participant has a current or reoccurring urinary tract infection (≥3 or more within the previous 12 months or ≥2 within the previous 6 months).
• Participant has a primary diagnosis of stress urinary incontinence (SUI) or mixed incontinence with SUI likely to confound outcome measures.
• Participant has Bladder Pain Syndrome or interstitial cystitis.
• Participant has had botulinum toxin (BOTOX) treatment in the pelvic region within 9 months or has lasting benefit from BOTOX.
• Participant has failed (lack of effectiveness) BOTOX treatment within the previous 2 years.
• Participants who demonstrate detrusor overactivity on a urodynamic test can be included.
• Participant has used antimuscarinics or β3 agonists within 2 weeks.
• Participant has started oestrogen therapy within 3 months or are planning to stop therapy when enrolled in the clinical investigation.

Exclusion criteria

specific for BD:

• Participant is planning or has a scheduled surgery/diagnostic procedure (within the duration of their participation), for any condition, that would influence their bowel movements (e.g., injection of bulking agents, radiofrequency energy, or ligation of haemorrhoids). Or have a prolonged hospitalization that would affect the ability to complete the stimulation.
• Participant is currently being treated with antibiotics.
• Participant has a history of uncontrolled diarrhoea in the past 3 months (usual or most common stool type over the preceding 3 months of 7 on the Bristol Stool Form Scale).
• Participant has a history of severe constipation in the past 3 months (usual or most common stool type over the preceding 3 months of 1 on the Bristol Stool Form Scale).
• Participant has a history of inflammatory bowel disease (includes Crohn's disease and ulcerative colitis). Participants with irritable bowel syndrome can be included in the clinical investigation.
• Participant has undergone major anorectal or bowel surgery or has ongoing anorectal or bowel conditions where primary surgery is considered the best, e.g., congenital anorectal malformation, bowel resection surgery, unrepaired rectovaginal fistula, chronic 4th degree anal sphincter laceration, full thickness rectal/anal prolapse. If it can be excluded that the participant's symptoms are related to any of the above surgeries/conditions, they can be included in the clinical investigation.