Polyvascular Corp

Houston, TX · Medtech · Private

Polymeric stent-mounted heart valve with polymer-derived leaflets for transcatheter pulmonary valve replacement in pediatric congenital heart disease

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Updated Oct 23, 2026

Sector: Medtech
Headquarters: Houston, TX
Latest Form D: $795K, Jul 2023
Total capital: $6.9M

Federal grants: $6.1M; 10 awards · 2016–2025; Rank in peer group#414 of 538
Private capital raised: $795K; 1 Form D · last Jul 2023; 39 months since last filing
Federal contracts: None on recordNo federal contract awards found.
Granted patents: None on recordNo USPTO grants. Applications publish after 18 months.

Capital timeline

Latest events

Feb 2025Federal grantHealth and Human S · Phase II · Development of a Polymeric Percutaneous Pulmonary Valve for Use in Young Children$815K
Jul 2023Private capital raisedForm D · SEC · 1st filing$795K
Jan 2022Federal grantHealth and Human S · Phase II · Development of a Polymeric Percutaneous Pulmonary Valve for Use in Young Children$121K
Jan 2022Federal grantHealth and Human S · Phase II · Development of a Polymeric Percutaneous Pulmonary Valve for Use in Young Children$121K
Jan 2022Federal grantHealth and Human S · Phase II · Development of a Polymeric Percutaneous Pulmonary Valve for Use in Young Children$990K
May 2021Federal grantHealth and Human S · Phase II · Development of a Polymeric Percutaneous Pulmonary Valve for Use in Young Children$82K
Apr 2021Federal grantHealth and Human S · Phase II · Development of a Polymeric Percutaneous Pulmonary Valve for Use in Young Children$2.4M

Show 4 earlier federal awards

Apr 2021Federal grantHealth and Human S · Phase II · Development of a Polymeric Percutaneous Pulmonary Valve for Use in Young Children$96K
Jan 2021Federal grantHealth and Human S · Phase II · Development of a Polymeric Percutaneous Pulmonary Valve for Use in Young Children$1M
Aug 2016Federal grantHealth and Human S · Phase I · Development of a Polymeric Percutaneous Pulmonary Valve for Use in Young Children$225K
Aug 2016Federal grantHealth and Human S · Phase I · Development of a Polymeric Percutaneous Pulmonary Valve for Use in Young Children$225K

Node area is scaled to amount. Form D reports securities sold, which can differ from an announced round; filings are numbered in the order they were made.

Federal first

83months

from Polyvascular Corp’s first federal award to its first private round.

First federal award · Aug 2016: Health and Human S · $225K
First Form D · Jul 2023: $795K · 1st Form D
Awards before first raise: 9 awards

An association in public records, not a cause or a prediction.

Standing among 538 peers

Line = median

Medtech · Device

Federal grantsBelow median

Cumulative measures favor older companies. Rankings describe position today, not outcome. Below the median, ranks show as a band rather than a number.

Founders and team

Researcher links verified by same-company patents and grants

Daniel HarringtonResearcherDirectorLinked by $815K in grants as PI
Henri JustinoResearcherDirectorLinked by $225K in grants as PI
Kwonsoo ChunDirectorNamed in SEC Form D filings
Paul SwegleExecutive OfficerNamed in SEC Form D filings
Tim SmokoffExecutive Officer, DirectorNamed in SEC Form D filings

What it has protected

No granted patents are on record.

USPTO usually publishes applications 18 months after filing, so recent applications may not be visible yet. Patents assigned under a different entity name won’t match.

Checked: USPTO granted patents and published applications · Oct 23, 2026

NeuroEM Therapeutics, Inc.Similar federal contract value in Medtech · null in contracts
AMES TECHNOLOGY, INC.Similar federal contract value in Medtech · null in contracts
OnLume Inc.Similar federal contract value in Medtech · null in contracts
Veriskin, Inc.Similar federal contract value in Medtech · null in contracts
TAUVISION, INC.Similar federal contract value in Medtech · null in contracts
Kneevoice, Inc.Similar federal contract value in Medtech · null in contracts

Regulatory activity · Medtech

Sector-level, not company-level

07 Jul 2026New Animal Drugs; Approval of New Animal Drug Applications; Withdrawal of Approval of New Animal Drug Application; Change of SponsorFood and Drug Administration
30 Jun 2026Medical Devices; General and Plastic Surgery Devices; Classification of the Skin Patch for Treatment of HyperhidrosisFood and Drug Administration
30 Jun 2026Medical Devices; Anesthesiology Devices; Classification of the Monitor for Opioid Induced Impairment of OxygenationFood and Drug Administration
29 Jun 2026Medical Devices; Orthopedic Devices; Classification of the Medial Knee Implanted Shock AbsorberFood and Drug Administration
26 Jun 2026Medical Devices; Neurological Devices; Classification of the External Lower Extremity Nerve Stimulator for Restless Legs SyndromeFood and Drug Administration
26 Jun 2026Medical Devices; General Hospital and Personal Use Devices; Classification of the Infant Supine Sleep SystemFood and Drug Administration

Rules are matched to sector, not to company. Recent activity in a sector is context rather than a signal about this business — until rules are matched to what a company actually builds, the section is shown as context and nothing more.

Sources

Federal grants from SBIR/STTR, NIH, NSF and DoD records. Federal contracts from USAspending.gov. Private capital from SEC Form D. Patents from USPTO. Publications from OpenAlex. Regulatory activity from the Federal Register. Press matched on company name.

How to read this page

Figures show associations in public records, not causes or predictions. Nothing here is investment advice. An em-dash means no record was found under this company's name, not that none exists.

Data freshness

SEC Form D filings through Oct 23, 2026. SBIR and STTR awards through Oct 21, 2026.