New smart wearable launches to prepare women for breast surgery in the U.S.

When it comes to surgery, especially something as sensitive as breast reconstruction or oncology-related operations, the time before the first incision can make all the difference. That's the moment Plexāā wants to transform. On the first day of Breast Cancer Awareness Month, the medtech company unveiled BLOOM43 in the U.S. — a first-of-its-kind preconditioning platform that blends a wearable device and a digital app to help women physically and mentally prepare for breast surgery.

"Patients always ask what they can do to prepare themselves for breast surgery," said Dr. Saahil Mehta, plastic surgeon and Plexāā's founder. "With BLOOM43, women now have a way to make critical improvements to tissue health before the first incision."

How does it work?

The BLOOM43 device is worn at home in the hours leading up to surgery — often the night before. It utilizes Supraphysiological Preconditioning, a scientifically validated process in which precise, sensor-controlled heat gently warms the skin at the surgical site. That heat triggers the body's natural production of heat shock proteins, which boosts blood flow and enhances tissue resilience.

In simple terms, BLOOM43 helps the skin "train" for surgery — a sort of pre-game warm-up for your tissue.
Key features include:

• Hands-free, portable design for easy at-home use
• Ultra-precise temperature control for safety and consistency
• A companion app offering personalized Prehab programs on nutrition, movement, and mindset
• Clinical results showing reduced skin necrosis risk by 24%, fewer follow-up surgeries by half, and shorter hospital stays by two days

The app, certified by DHAF and ORCHA, also provides patients with access to the world's largest library of evidence-based breast surgery preparation content, along with a supportive community. It's holistic, practical, and empowering.

Why does it matter?

Breast surgery, whether reconstructive, oncological, or cosmetic, is never just skin deep. Complications like wound infections or skin necrosis can affect up to 30% of cases and lead to longer recovery, higher costs, and emotional distress. For many women, it's not just physical healing — it's also psychological readiness.

That's where BLOOM43 stands apart. It helps patients feel in control again, addressing both the biological and emotional aspects of surgery preparation. "The hardest part about having cancer is losing control," said Nichole W. Owens, the first U.S. patient to use BLOOM43 before surgery. A nine-year breast cancer survivor who's undergone eight breast surgeries, she added, "By using the BLOOM43 device before my most recent surgery, I felt empowered and prepared because I had done everything I could to have a successful outcome."

For patients and surgeons alike, that sense of readiness — backed by science — is invaluable.

The context

Modern medicine has long focused on post-op recovery, but the idea of prehab — preparing the body before surgery — is finally stepping into the spotlight. Plexāā's approach elevates this philosophy to a new level, combining wearable technology, digital health, and precision preconditioning.

Dr. Mehta and his team see BLOOM43 as the first step in redefining surgical preparation altogether. The device is already being prescribed at select clinics in California, including the San Francisco Plastic Surgery & Laser Center and Illuminate Surgery in Los Gatos. Patients can also order it nationwide with a prescription through the App Store or Google Play, where it's eligible for HSA and FSA use.

In a world where every detail matters before surgery, BLOOM43 is transforming "getting ready" into something measurable — and perhaps even life-changing.