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Zenflow

Zenflow is a YC Winter 2015 (W15) company. Based in South San Francisco, CA, USA. Team of 18.

  • Medical Devices

About Zenflow

GPAgent's own fund-neutral profile, written from public information. Updated Oct 4, 2026.

Summary

Zenflow builds an implantable device for men with benign prostatic hyperplasia, a condition that causes urinary obstruction and affects tens of millions of men. The Zenflow Spring is a small implant placed by a urologist in an office procedure that mechanically opens the blocked urethra, delivering lasting symptom relief. It replaces the two standard options: long-term medication, which carries systemic side effects and limited efficacy, and invasive surgery, which risks sexual dysfunction.

Go-to-market

Urologists adopt the Zenflow Spring as an in-office procedure, positioning it as a direct alternative to prescribing BPH medications or referring patients for surgery.

From the Y Combinator listing

How Zenflow describes itself in Y Combinator's public directory. Original listing (opens in a new tab)

Medical device that provides a more effective, less invasive…

Forty million men in the US and over 500 million worldwide suffer from urinary obstruction related to benign prostatic hyperplasia (BPH). The majority of men will experience symptoms of this disease at some point in life. BPH, also known as prostate enlargement, leads to urinary straining, frequency, urgency, and sleep disruption. Despite the high prevalence and significant quality of life burden of BPH, established treatments are limited to drugs, which have limited effectiveness, and surgery, which carries a high risk of sexual side effects. The Zenflow Spring is a small implant delivered in the urologist's office in a simple procedure that provides quick and long-lasting symptom relief.

Facts

Industry
Healthcare / Healthcare -> Medical Devices
Location
South San Francisco, CA, USA
Team size
18
Status
Active
Stage
Growth

Founders (1)

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