Hemostatic Valve
One valve lumen that keeps its seal around multiple wires and catheters at once — through every device exchange.
Some things are worth protecting.
The large-bore introducer sheath, engineered around one multi-device hemostatic valve.
NovaSeal's hemostatic valve conforms around guidewires, catheters, and large-bore systems moving together through a single lumen — designed to minimize blood loss through every exchange of the case.

A complete large-bore access platform — the hemostatic valve hub, dedicated VALVE and FLUSH side-arm stopcocks, a hydrophilic shaft, radiopaque marker and atraumatic tip — sterile, single-use, ready off the back table.
Soft tapered tip, hydrophilic shaft, coaxial entry over a 0.035″ guidewire — engineered for smooth, atraumatic large-bore access.
One valve lumen that keeps its seal around multiple wires and catheters at once — through every device exchange.
A lubricious coating along the working length for smoother advancement through tortuous, challenging anatomy.
A radiopaque ring for precise placement and a soft tapered tip designed to reduce vessel trauma on insertion.
Fifteen consecutive French sizes — every single size from 12 to 26 Fr — each available in all three working lengths. A full 45-configuration grid, so the exact sheath for the case is simply on the shelf.
All sizes and lengths per the cleared Instructions For Use, Table 1 — full matrix below.
| Device type | Sterile, single-use introducer sheath set (sheath + dilator), EO sterilized |
| Hemostatic seal | Multi-device hemostatic valve with dedicated VALVE and FLUSH side-arm stopcocks — one 2.5 mL saline preparation per the IFU |
| French sizes | 12 – 26 French — fifteen consecutive sizes, every 1 Fr |
| Working lengths | 330 / 450 / 650 mm — every length available in every size (45 configurations) |
| Guidewire | Dilator accepts 0.035 in (0.89 mm) or smaller |
| Key components | Sheath tube & hub, hemostatic valve, VALVE and FLUSH side-arm stopcocks, radiopaque visualization ring, dilator, hydrophilic coating |
| Indication (IFU) | Inserted in the vasculature to provide a conduit for the insertion of endovascular devices while minimizing blood loss associated with such insertions |
Clinical & compliance note. Factual device claims trace to the cleared Instructions For Use and manufacturer product literature; comparative and procedural benefits are framed as design intent. Final clinical decisions defer to cleared labeling, facility protocols, and clinician judgment.
The full cleared configuration grid — fifteen consecutive French sizes, each in 330, 450, and 650 mm working lengths.
NovaSeal grid per the cleared IFU, Table 1 (K251838). Competitor view reflects the published size matrix of a typical large-bore introducer sheath line across 12–26 Fr, per manufacturer specifications (June 2026); that line also offers one size below 12 Fr — approximately 21 configurations in total. Shown for range illustration; verify current availability with each manufacturer.
| French size | Sheath Min. ID | Sheath Nom. OD | Working lengths |
| 12 Fr | 3.9 mm | 4.8 mm | 330 · 450 · 650 mm |
| 13 Fr | 4.3 mm | 5.0 mm | 330 · 450 · 650 mm |
| 14 Fr | 4.6 mm | 5.3 mm | 330 · 450 · 650 mm |
| 15 Fr | 4.9 mm | 5.6 mm | 330 · 450 · 650 mm |
| 16 Fr | 5.3 mm | 6.1 mm | 330 · 450 · 650 mm |
| 17 Fr | 5.6 mm | 6.4 mm | 330 · 450 · 650 mm |
| 18 Fr | 5.9 mm | 6.7 mm | 330 · 450 · 650 mm |
| 19 Fr | 6.3 mm | 7.1 mm | 330 · 450 · 650 mm |
| 20 Fr | 6.6 mm | 7.5 mm | 330 · 450 · 650 mm |
| 21 Fr | 6.9 mm | 7.8 mm | 330 · 450 · 650 mm |
| 22 Fr | 7.3 mm | 8.2 mm | 330 · 450 · 650 mm |
| 23 Fr | 7.6 mm | 8.5 mm | 330 · 450 · 650 mm |
| 24 Fr | 7.9 mm | 8.8 mm | 330 · 450 · 650 mm |
| 25 Fr | 8.3 mm | 9.2 mm | 330 · 450 · 650 mm |
| 26 Fr | 8.6 mm | 9.5 mm | 330 · 450 · 650 mm |
French size designations reflect the device-accepting inner lumen; sheath Min. ID and Nom. OD per the cleared IFU, Table 1. Matching dilator supplied in every set (accepts 0.035 in guidewire). Catalog numbers available on request.
One access platform, five procedures. In every one, NovaSeal is the conduit — the therapy travels through it, and the seal holds.
Main body up one femoral conduit, contralateral limb through the other — two seals holding through every exchange.
A femoral venous conduit for large-bore aspiration systems traveling through the right heart — hemostasis held across repeated passes.
Transfemoral valve delivery, blood loss controlled as large systems move in and out.
Long working lengths reach the descending thoracic aorta, distal to the left subclavian.
Venous access where profile and lubricity are designed to minimize access-site trauma.
Representative illustrations. Rendered device configurations and anatomy are illustrative of intended use as an access conduit; therapy devices shown are not Nova Vascular products.
A growing platform of vascular-access and intervention devices — engineered to one standard, designed to work together. Catheters, guide wires, and introducer sets from the Nova portfolio are available today at novavasc.com.
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Sample evaluation, in-service training, cleared IFU and regulatory documentation, and procurement onboarding — coordinated end to end. Account-specific pricing provided upon request.
Download size matrix (PDF)