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GBU Doctor First in MA to Implant eCoin for Urinary Incontinence

As the Director of Women's Health at Greater Boston Urology, Dr. Angel Marie Johnson Leads the Way in Innovative, Evidence-Based Treatments for Urinary Incontinence and Overactive Bladder

Dedham, MA, Sept 12, 2023 — Greater Boston Urology (GBU) announced that urogynecologist Dr. Angel Marie Johnson, the Director of Women's Health at GBU, recently received two distinctions as she continues to lead the way in advancing evidenced-based treatments for urinary incontinence and overactive bladder syndrome (OAB).

Last month, Johnson became the first physician in Massachusetts to implant eCoin in a patient. eCoin is a nickel-sized, battery-powered neurostimulator device used to treat patients with OAB. eCoin was FDA-approved in December 2022, and Johnson participated in the FDA approval process. 

The eCoin device is placed under the skin near the medial malleolus (the bony bump on the inner side of the ankle). Every three to four days, the eCoin device turns itself on, activates the tibial nerve, and then goes back to sleep. Activating the tibial nerve causes stimulation of the nerves around the bladder, which can bring about sustained relief from OAB symptoms.

Johnson also became the first "Center of Excellence" in New England for her expertise in Bulkamid, which treats stress urinary incontinence (SUI).

Bulkamid is a urethral bulking agent made of soft hydrogel that's injected into the urethral wall via a syringe. The hydrogel consists of 97.5% water and 2.5% polyacrylamide. The goal of the bulking agent is to restore the natural closing pressure of the urethra. This will help prevent urine from leaking out during normal daily activities like coughing, sneezing, laughing, or exercising.

Dr. Johnson says, "I am passionate about helping people whose lives are adversely affected by urinary incontinence. Bulkamid and eCoin are two effective treatments designed to improve patients' quality of life, and it's an honor to receive these distinctions."

Regarding Dr. Johnson's recent achievements, Les Cavicchi, GBU's Chief Operating Officer, says, "Dr. Johnson has been a leader in the field of urogynecology since joining GBU from fellowship training in 2017. She is a caring and compassionate doctor. Her patients appreciate her commitment to their individual care needs and requirements."

Patients interested in learning if Bulkamid or eCoin is right for them should call GBU's Dedham Care Center to make an appointment with Dr. Johnson: 781.762.0471.

About Greater Boston Urology

Founded in 2010, Greater Boston Urology is an integrated urology practice. This medical model allows the practice to pool resources, resulting in more—and better—options for patients. From the moment a patient walks through the door, GBU strives to manage each patient's care in-house. This in-house care includes imaging studies, diagnostic testing, pathologic testing, and surgical treatments. Supported by a talented team of urologists, urogynecologists, nurse practitioners, and physician assistants, GBU has multiple Care Centers in Greater Boston, the South Shore, and the Cape & Islands. To learn more, visit

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