An interventional study of BTL Emsella Chair in Male Sexual Dysfunction and Ejaculatory Dysfunction, sponsored by Corewell Health East. Recruiting at 1 site in United States. Open to male participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-07-09.
Sponsored by Corewell Health East · Not applicable, Interventional, and Treatment
We will be performing this study in 2 phases: Phase 1 will be an open label pilot study of 10 male participants. All participants in the pilot study will receive active treatment. If data from the pilot study is suggestive of symptom improvement, we will continue on to phase 2, which is a sham controlled, randomized blinded study. Participants in phase 2 will be randomized to receive either active treatment or sham. Potentially a total of 117 participants for both phases will be enrolled.
The purpose of this study is to compare the Emsella Chair to sham and to determine whether electromagnetic technology is effective in the treatment of sexual dysfunction, specifically erectile dysfunction (EjD) in men.
Male sexual health is an often overlooked and ignored facet of mens well-being. However, this can have significant effects on quality of life for both the man afflicted by sexual dysfunction as well as their partner. Most commonly we think of erectile dysfunction (ED) as the main factor of male sexual dysfunction, but ejaculatory dysfunction (EjD) and other problems relating to orgasm are also important. EjD is exceedingly common especially in the aging male population, and includes premature ejaculation (PE), delayed ejaculation (DE), anejaculation (absence of ejaculation during orgasm), retrograde ejaculation, and painful ejaculation. Medications such as sildenafil (Viagra) and tadalafil (Cialis) are Phosphodiesterase type 5 (PDE-5) inhibitors that are commonly used for the treatment of ED, but there are very few medications specifically formulated to treat EjD. More conservative management options for the treatment of ED include vacuum erection devices, psychotherapy, and lifestyle changes. The usual next step after failure of the above options includes intracavernosal injections which involve directly injecting erectogenic medication into the penis, intraurethral injections, or finally surgery. Ejaculatory dysfunction on the other hand, whether it be premature, delayed, retrograde, or anejaculation all have much less treatment options. Most of these include either the off-label use of medications to treat other conditions or sex therapy / psychotherapy.
Treatments including pudendal neuromodulation or pudendal canal decompression have shown significant improvement in ED and EjD. Due to side effects and the lack of patient compliance to oral medication, non-oral medication treatments are in high demand for this condition. Neuromodulation therapies have become increasingly popular for the treatment of male sexual dysfunction. These neuromodulation therapies often work by stimulating the sacral nerve. The Emsella Chair is a conservative neuromodulation therapy that may have a role for patients who are not surgical candidates or who desire a noninvasive treatment option. The Emsella Chair uses high intensity focused electromagnetic (HIFEM) technology to induce deep pelvic floor muscle contractions, the equivalent of 11,200 Kegel exercises over 28 minutes. The treatment awakens deconditioned pelvic floor muscles, delivers the stimulations, and then relaxes the muscles. The repetition of these phases leads to pelvic floor adaptation and remodulation. this treatment could provide similar improvement for men with sexual dysfunction given the significant overlap in anatomy and physiology, as well as studies that have shown improvement in sexual dysfunction with pelvic floor muscle therapy.
Corewell Health East is the lead sponsor of 19 studies on the registry; 9 are open to participants now.
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5. Self-reported ejaculatory dysfunction symptoms present >3 months 6. Self-reported failed conservative care of behavioral modifications and/or oral medications.
7. Subject agrees not to start any new treatment for erectile dysfunction or ejaculatory dysfunction during the treatment and follow-up periods.
Exclusion Criteria:
Current or history of any physical condition that, in the investigator's opinion, might put the subject at risk or interfere with study results interpretation
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.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
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A drug or device being studied in a clinical trial.
It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Clinically significant
Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Investigational drug or device
A drug or device being studied in a clinical trial.
It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Subjects will be asked to sit on the device and the height will be adjusted until the subject's feet are on the floor. The active treatments are individualized, since some subjects will be more sensitive than others. The Emsella chair will be turned on and the setting gradually increased to the subject's sensory threshold; the maximum sensation the subject can tolerate. The setting will be decreased slightly and stay unchanged for the remainder of the treatment. The treatment threshold should be increased with every treatment until the subject reaches 100%.
Device: BTL Emsella Chair
Sham treatment subjects will be positioned on the device in the same manner. The sham treatment will provide some sensation without active HIFEM technology. The programming for the sham treatment will have an amplitude limitation, with the setting below the therapeutic level (\<10% power).
Device: BTL Emsella Chair
Subjects will sit on the device. The clinical research coordinator will turn the device on and increase the setting gradually until the patient reaches their sensory threshold. This is the maximum sensation the patient can tolerate. The treatment threshold should be increased until the subject reaches 100%.
The overall efficacy of the Emsella Chair to sham by evaluating subject reported symptom improvement as measured by the Global Response Assessment (GRA)
The GRA is a validated single question survey prompting subjects to rank change in symptom severity since the start of therapy on a 7-point scale (1 = markedly worse, 2 = moderately worse, 3 = mildly worse, 4 = same, 5= slightly improved, 6 = moderately improved, 7= markedly improved). A score equal to or above 5 will show improvement. A score of 4 will mean no change. A score equal to or below 3 will show worsening of symptoms.
Time frame: 4 weeks after completing all 8 treatments
Change in subject-reported ability to achieve an erection as measured by the Male Sexual Health Questionnaire (MSHQ) responses.
The MSHQ is a validated, self-administered questionnaire which was developed specifically for assessing key aspects of sexual function and satisfaction in the aging male with urogenital health concerns. Specifically the score for Question 1 will be reviewed from the erection scale. "In the last month, without using drugs like Viagra, how often have you been able to get an erection when you wanted to?" Measured as (5 = all of the time, 4 = most of the time, 3 = about half of the time, 2 = less than half the time, 1 = none of the time, and 0= used Viagra or similar drug with every sexual encounter). A higher score indicates a higher ability to achieve an erection. Change from baseline is reported, with a positive number indicating a worsening and a negative number indicating improvement.
Time frame: At baseline and 4 weeks after completing the primary endpoint
Change in subject-reported ability to maintain an erection as measured by MSHQ responses
The MSHQ is a validated, self-administered questionnaire which was developed specifically for assessing key aspects of sexual function and satisfaction in the aging male with urogenital health concerns. Specifically the score from question 2 will be reviewed from the erection scale. "In the last month, if you were able to get an erection without using drugs like Viagra, how often were you able to stay hard as long as you wanted to?" Measured as (5 = all of the time, 4 = most of the time, 3 = about half of the time, 2 = less than half the time, 1 = none of the time, and 0= used Viagra or similar drug with every sexual encounter). A higher score indicates a higher ability to maintain an erection. Change from baseline is reported, with a positive number indicating a worsening and a negative number indicating improvement.
Time frame: At baseline and 4 weeks after completing the primary endpoint
Change in subject-reported ability to ejaculate as measured by MSHQ responses
The MSHQ is a validated, self-administered questionnaire which was developed specifically for assessing key aspects of sexual function and satisfaction in the aging male with urogenital health concerns. Specifically the score from question 5 will be reviewed from the ejaculation scale. "In the last month, how often have you been able to ejaculate when having sexual activity?" Measured as (5 = all of the time, 4 = most of the time, 3 = about half of the time, 2 = less than half the time, 1 = none of the time/could not ejaculate). A higher score indicates a higher ability to achieve ejaculation. Change from baseline is reported, with a positive number indicating a worsening and a negative number indicating improvement.
Time frame: At baseline and 4 weeks after completing the primary endpoint
Change in subject-reported strength or force of ejaculation as measured by MSHQ
The MSHQ is a validated, self-administered questionnaire which was developed specifically for assessing key aspects of sexual function and satisfaction in the aging male with urogenital health concerns. Specifically the score from question 8 will be reviewed from the ejaculation scale. "In the last month, how would you rate the strength or force of your ejaculation?" Measured as (5 = as strong as it always was, 4 = a little less strong than it used to be, 3 = somewhat less strong then it used to be, 2 = much less strong than it used to be, 1 = very much less strong than it used to be, 0= could not ejaculate). A higher score indicates a higher ability to achieve a forceful ejaculation. Change from baseline is reported, with a positive number indicating a worsening and a negative number indicating improvement.
Time frame: At baseline and 4 weeks after completing the primary endpoint
Change in subject-reported volume of semen when ejaculating as reported on the MSHQ.
The MSHQ is a validated, self-administered questionnaire which was developed specifically for assessing key aspects of sexual function and satisfaction in the aging male with urogenital health concerns. Specifically the score from question 9 will be reviewed from the ejaculation scale. "In the last month, how would you rate the amount or volume of semen when you ejaculate?" Measured as (5 = as much as it always was time, 4 = a little less then it used to be, 3 = somewhat less than it used to be, 2 = much less than it used to be, 1 = very much less than it used to be, 0= could not ejaculate). A higher score indicates a higher ability to produce a greater volume of ejaculate. Change from baseline is reported, with a positive number indicating a worsening and a negative number indicating improvement.
Time frame: At baseline and 4 weeks after completing the primary endpoint
Change in subject-reported pleasure with ejaculation as measured by the MSHQ.
The MSHQ is a validated, self-administered questionnaire which was developed specifically for assessing key aspects of sexual function and satisfaction in the aging male with urogenital health concerns. Specifically the score from question 10 will be reviewed from the ejaculation scale. "Compared to ONE month ago, would you say the physical pleasure you feel when you ejaculate has-" Measured as (5 = increased a lot, 4 = increased moderately, 3 = neither increased nor decreased, 2 = decreased moderately, 1 = decreased a lot, 0= could not ejaculate). A higher score indicates a higher ability report pleasure with ejaculation. Change from baseline is reported, with a positive number indicating a worsening and a negative number indicating improvement.
Time frame: At baseline and 4 weeks after completing the primary endpoint
Change in subject-reported pain with ejaculation as measured by the MSHQ.
The MSHQ is a validated, self-administered questionnaire which was developed specifically for assessing key aspects of sexual function and satisfaction in the aging male with urogenital health concerns. Specifically the score from question 11 will be reviewed from the ejaculation scale. "In the last month, have you experienced any physical pain or discomfort when you ejaculated? Would you say you have…" Measured as (5 = no pain at all, 4 = slight amount of pain or discomfort, 3 = moderate amount of pain or discomfort, 2 = strong amount of pain or discomfort, 1 = extreme amount of pain or discomfort, 0= could not ejaculate). A higher score indicates no pain or less pain with ejaculation. Change from baseline is reported, with a positive number indicating a worsening and a negative number indicating improvement.
Time frame: At baseline and 4 weeks after the primary endpoint visit
Change in subject-reported satisfaction with sex life as measured by the MSHQ.
The MSHQ is a validated, self-administered questionnaire which was developed specifically for assessing key aspects of sexual function and satisfaction in the aging male with urogenital health concerns. The MSHQ contains 3 domains: Erection scale (3 items), Ejaculation scale (7 items), and Sexual satisfaction scale (6 items). 9 additional items (2 items measuring bothersome linked to erection and ejaculation and 7 items measuring sexual activity and desire). Specifically the score from question 14 will be reviewed from the sexual satisfaction scale. "Generally, how satisfied are you with the quality of the sex life you have with your main partner?" Measured as (5 = extremely satisfied, 4 = moderately satisfied, 3 = neither satisfied nor unsatisfied, 2 = moderately unsatisfied, 1 = extremely unsatisfied). Change from baseline is reported, with a positive number indicating a worsening and a negative number indicating improvement.
Time frame: At baseline and 4 weeks after the primary endpoint visit
Change in subject-reported urge or desire to have sex as measured by the MSHQ.
The MSHQ is a validated, self-administered questionnaire which was developed specifically for assessing key aspects of sexual function and satisfaction in the aging male with urogenital health concerns. The MSHQ contains 3 domains: Erection scale (3 items), Ejaculation scale (7 items), and Sexual satisfaction scale (6 items). 9 additional items (2 items measuring bothersome linked to erection and ejaculation and 7 items measuring sexual activity and desire). Specifically question 22 will be reviewed, concerning the sexual urges they have felt toward their main partner, and not whether they actually had sex. "In the last month, how often have you felt an urge or desire to have sex with your main partner?" Measured as (5 =all the time, 4 = most of the time, 3 = about half of the time, 2 = less than half of the time, 1 = none of the time). Change from baseline is reported, with a positive number indicating a worsening and a negative number indicating improvement.
Time frame: At baseline and 4 weeks after the primary endpoint visit
The secondary durability objective for this study is to determine whether subjects in the Emsella Chair group continue to have a higher responder rate, compared to the Sham group, as measured by the GRA.
The GRA is a validated single question survey prompting subjects to rank change in symptom severity since the start of therapy on a 7-point scale (1 = markedly worse, 2 = moderately worse, 3 = mildly worse, 4 = same, 5= slightly improved, 6 = moderately improved, 7= markedly improved). A higher score indicates a better outcome.
Time frame: 4 weeks after the primary endpoint visit
The secondary safety objective of this study are to determine the safety and tolerability of the Emsella Chair compared to Sham. Safety and tolerability will be assessed in relation to the incidence of adverse events.
Adverse event monitoring will occur between start of treatment to the end of study participation, approximately 12 weeks including the last follow-up visit of the blinded portion. Those randomized to the sham treatment will be offered active treatment after the secondary endpoint visit is completed. Those that elect to receive active treatment will be monitored for adverse events through the last follow-up visit, events during this timeframe will be considered active Emsella Chair.
Time frame: Approximately 12 weeks, up to 24
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Ejaculatory Dysfunction
Corewell Health East