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July 18, 2022

Introducing Mendaera

Media Inquiries
Michelle Stevens
Media@mendaera.com

SAN MATEO, Calif. – September 11, 2025 – Mendaera™, Inc., a healthcare technology company developing next-generation robotics technology to simplify ultrasound-guided needle procedures, today announced the world’s first procedures performed with the Focalist™ handheld robotic system. Urologist Karen Stern, M.D., (Mayo Clinic Arizona) successfully used Focalist to achieve precise kidney access during percutaneous nephrolithotomy (PCNL), the gold standard treatment for large kidney stones. Dr. Stern presented the milestone procedures at the World Conference on Endourology and Uro-Technology (WCET), a prestigious global meeting for surgeons advancing minimally invasive kidney stone treatment.

PCNL begins with the placement of a needle into the kidney under imaging guidance, creating a pathway for stone removal. This critical first step requires extreme precision to avoid surrounding organs and to enable optimal and effective stone clearance. Using Focalist, Dr. Stern and her team achieved rapid, efficient, and precise first-pass needle placement into the ideal kidney location.


“I was thrilled to be the first in the world to use the Focalist System,” said Dr. Stern. “I found it intuitive to learn and easy to integrate into my workflow. Focalist enhances needle control and simplifies precise placement under ultrasound, particularly for operators with less experience. It has the potential to build confidence in ultrasound-guided access and lower the barrier to proficiency across providers with varying levels of experience.”


The Focalist™ System combines handheld robotics, real-time ultrasound, and advanced software to enable precise, repeatable instrument placement. These first-in-the-world procedures mark the beginning of the limited U.S. launch of Focalist in urology, with expansion to additional specialties planned in 2026.


“These first procedures underscore Focalist’s ability to deliver highly precise, consistent needle placement - a foundational requirement across all of medicine,” said Josh DeFonzo, co-founder and CEO of Mendaera. “We’re proud to partner with Dr. Stern as she pioneers ultrasound-guided access in urology. We believe Focalist will empower more healthcare providers to perform procedures with confidence. This milestone brings us closer to our mission of broadening access to minimally invasive procedures and elevating standards across the healthcare system.

The recorded case presentation by Dr. Stern will be available in the coming weeks on the WCET website.

About Mendaera

Mendaera is building a new category of handheld robotics designed to make precision more accessible across healthcare. With its Focalist™ System, combining real-time imaging with intuitive handheld robotic control, Mendaera supports clinicians in delivering consistent, high-quality care across a broad range of minimally invasive procedures and settings. Based in Silicon Valley, CA, the company is backed by leading investors and a leadership team with a track record of successful outcomes, including Auris Health.

Mendaera’s Focalist™ System has FDA clearance in the U.S. to provide guidance for precise instrument placement of common interventional devices by positioning the device relative to the ultrasound transducer and resulting image during diagnostic or therapeutic procedures. The system is intended for use with pediatric and adult patients. Learn more at Mendaera.com.

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If you need another copy of the Instructions for Use (IFU) for your Focalist™ System, we’re happy to help. As a reminder, the IFU was originally provided via email at the time of purchase.

If you’d like an additional copy, please contact our Customer Care team at customercare@mendaera.com, and we’ll be glad to provide it.

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Press Releases

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July 18, 2022

Introducing Mendaera

Michelle Stevens
Media Inquiries
Media@mendaera.com

The platform combines real-time ultrasound with a robotic arm to increase the precision of common needle-based procedures, while reducing the costs of care delivery and supporting better patient outcomes

Mendaera, Inc., a healthcare technology company, announced it has received U.S. Food and Drug Administration (FDA) 510(k) clearance for its handheld robotics platform which combines real-time ultrasound imaging with a robotic arm designed to help clinicians place needles for common procedures more precisely and consistently. Mendaera’s technology is cleared for commercial use in all ultrasound-guided needle-based procedures, with an initial rollout in urology.

In the United States, an estimated 200 million needle-based procedures are performed annually. However, just 20% of providers perform the majority of these interventions, in part due to the complexity of mastering the required skillset. With traditional freehand techniques, even experienced specialists achieve only a 37% first-stick accuracy rate, which means health systems often need to rely on only the most experienced specialists to perform needle-based procedures. This, in turn, can increase the cost of care delivery, lead to critical levels of provider burnout, and to delays in patient care.

“Surgical robots have long been confined to the operating room due to size and cost, limiting their widespread adoption,” said Josh DeFonzo, Co-founder and CEO of Mendaera. “With Mendaera’s FDA clearance, higher-frequency procedures – like biopsies, nerve blocks, and placing catheters – can be performed in a diversity of care settings, allowing healthcare systems to improve the quality of care and deliver it more efficiently.”
Mendaera’s provider-guided robot attaches to an ultrasound probe, freeing up the other hand to choose a target by tapping it on a touchscreen. The robot then calculates the optimal trajectory and depth of the needle, compensating for patient and provider motion, and when the provider is ready, they deploy the robot to insert the needle.
Early studies demonstrate the system’s significant impact on precision, with novice providers improving first-attempt success rates from 12% to 73% and experienced providers improving 
from 37% to 83%.

"Inserting an instrument into a patient using ultrasound has long been akin to finding a needle in a haystack,” said Jason Wilson, Ph.D., Co-Founder and Chief Technology Officer of Mendaera. “Mendaera’s combination of handheld robotics and features like anatomy recognition, instrument depth tracking, and telepresence are designed to empower clinicians of all skill levels to confidently achieve first-stick success, freeing experienced specialists for the most intricate cases where their expertise is indispensable."
The Mendaera system will initially be rolled out to support the treatment of Percutaneous Nephrolithotomy (PCNL), which requires a minimally invasive procedure to remove kidney  stones. Due to wide variations in individual kidney shape and anatomy and the need to precisely locate the kidney’s collection site, this procedure requires meticulous technique and experience to avoid damaging surrounding tissues.

“There is an immediate need for technology that can improve the accuracy and efficiency of common urological procedures like PCNL,” said [Dr. Stern/Chi] “By incorporating robotics like Mendaera, we can have a significant and immediate impact on healthcare system operations and increase positive patient outcomes.”
The company also plans to expand its platform’s application to other areas, such as interventional radiology, emergency medicine, and anesthesia.

For more information, please visit www.mendaera.com

About Mendaera

Mendaera’s vision is to digitize clinical judgment and technical expertise, making high-quality care available for every patient at every care facility. Its FDA-cleared platform combines robotics, real-time imaging, and connectivity to enable intervention at scale. Based in Silicon Valley, Mendaera is backed by leading investors and includes a leadership team successful in taking early-stage medical technology companies through to successful exits including Auris Health.

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Introducing Mendaera

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July 18, 2022

Mendaera is developing technology that will enable all healthcare providers to do more for their patients. Our platform combines real-time imaging, robotics, and artificial intelligence to make precise and consistent intervention more accessible. Our aim is to eliminate barriers in the patient journey, accelerate recovery, delight customers, and reduce cost of care.

Josh DeFonzo, Co-Founder and CEO of Mendaera

We founded Mendaera to address inefficiencies and unmet needs in healthcare using advanced technology. We are building solutions that will make healthcare better for our friends, families, and humans across the globe. We recognize the responsibilities we have as participants in the healthcare ecosystem.​

We empathize with patients and realize that in most circumstances the need to utilize healthcare services likely means that some level of pain and uncertainty is involved. Our primary aim is to improve that experience as much as possible.

We understand the pressures that healthcare providers experience in healthcare systems across the globe. Hours are long, administrative burdens are increasing, reimbursements are shrinking, and job satisfaction is often strained.

We acknowledge that administrators and payors are looking to realize better value for the dollars they spend caring for beneficiaries. New medicines, therapies, and devices need to pay for themselves by improving and extending quality of life, enhancing patient satisfaction, and reducing the overall cost of care.

We view regulators and other stakeholders as partners in the journey to develop healthcare technology. Their mission to ensure that innovations are safe, effective, and used when medically necessary should not be seen as impediments in the innovation process, but bars to be reached and surpassed.

Lastly, beyond just understanding our stakeholders, we want to build great things by building a great company. If you want to help us do that, check out our open roles today.

Media Contact

Michelle Stevens

Director, Marketing Communications

Media@Mendaera.com

Contact Us

Be part of the next wave.

Sign up for updates, exclusive demos, and early opportunities to explore the future of robotic-guided access.

If you need another copy of the Instructions for Use (IFU) for your Focalist™ System, we’re happy to help. As a reminder, the IFU was originally provided via email at the time of purchase.

If you’d like an additional copy, please contact our Customer Care team at customercare@mendaera.com, and we’ll be glad to provide it.

Select an Option
Thank you! Your request has been received!
Oops! Something went wrong while submitting the form.