VenoStent

Challenger

Houston TX YC W20 clinical-stage AV fistula wrap for dialysis patients with 200-patient RCT underway; $22.8M total ($20M Good Growth/Norwest Series A Jun 2024 + $3.6M NIH grant) targeting vascular access failure competing for dialysis market.

Updated March 2026

Company Overview

About VenoStent

VenoStent is a Houston, Texas-based clinical-stage medical device company — backed by Y Combinator (W20) with $22.8 million in total funding including a $20 million Series A in June 2024 led by Good Growth Capital and IAG Capital Partners with $4 million from Norwest Venture Partners, plus a $3.6 million NIH SBIR Phase II Grant — developing SelfWrap, a bioabsorbable perivascular wrap designed to improve arteriovenous (AV) fistula patency rates for chronic kidney disease patients requiring hemodialysis access. Having initiated clinical sites and enrolled first patients in a 200-patient randomized controlled trial (RCT) across multiple US centers in 2024, VenoStent targets the 600,000+ American dialysis patients who depend on reliable vascular access as their lifeline.

Business Model & Competitive Advantage

VenoStent's SelfWrap perivascular device addresses the AV fistula failure rate that is the leading cause of hospitalization and morbidity in dialysis patients: an AV fistula (a surgical connection between an artery and vein in the forearm that creates a high-flow vascular access point for dialysis needle cannulation) fails to mature into a usable access in 20-60% of cases due to neointimal hyperplasia — the body's smooth muscle cell proliferation response to surgical trauma that narrows the vein and prevents adequate blood flow for dialysis. SelfWrap's bioabsorbable outer wrap (applied around the vein at the time of fistula creation, providing mechanical support and controlled drug delivery to modulate the healing response) is designed to reduce the hyperplasia cascade that causes fistula failure — improving the primary patency rates that determine whether a dialysis patient uses their own fistula or requires a catheter (which carries 3x higher infection risk and 2x higher mortality).

Competitive Landscape 2025–2026

In 2025, VenoStent competes in the hemodialysis vascular access, endovascular devices, and chronic kidney disease management market with Merit Medical (NASDAQ: MMSI, vascular access products, $1.2B revenue), BD (NYSE: BDX, hemodialysis catheter market leader, $20B revenue), and Vasc-Alert (AV access monitoring) for dialysis center and vascular surgery adoption of AV fistula maturation improvement devices. Good Growth Capital's Series A leadership and Norwest Venture Partners' participation reflect medtech venture conviction in vascular access innovation. NIH SBIR Phase II grant validation confirms scientific merit. Y Combinator W20 backing (unusual for a medical device company) connects VenoStent with the healthcare technology investor community. The 2025 strategy focuses on completing RCT enrollment across US dialysis and vascular surgery centers, building the clinical outcomes dataset for FDA De Novo or 510(k) submission, and engaging the dialysis network operators (DaVita, Fresenius) as commercial launch channels.

Revenue
$22.8M
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Key Differentiators

Strong Challenger

VenoStent is an established challenger with significant market presence and competitive offerings in Healthcare.

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