The Dolphin Sub-Intimal Entry Catheter, by Invamed—a global medical device manufacturer—is uniquely designed to assist in subintimal dissection and re-entry in chronic total occlusions (CTOs) or heavily diseased vascular segments. By providing a targeted pathway to the subintimal space and then guiding re-entry into the true lumen, Dolphin enhances procedural success in complex peripheral or coronary interventions.
Dedicated Subintimal Navigation
Engineered tip or “needle” design helps negotiate the subintimal plane, enabling operators to bypass occlusive lesions.
True Lumen Re-Entry
Specialized distal tip geometry assists in precision re-entry to the true lumen, improving success rates in otherwise intractable CTOs.
High Pushability & Torque
Braided or coiled shaft construction delivers robust force transmission for crossing tough plaque or calcifications.
Hydrophilic Coating (optional)
Minimizes friction against vessel walls, reducing dissection risk and procedural time in challenging anatomies.
Wide Clinical Utility
Indicated for peripheral artery disease (PAD) with occlusive lesions, especially superficial femoral or popliteal arteries. May also be adapted for select coronary interventions.
Contraindications
Extremely tortuous vessels, advanced dissection risk, or patient conditions that preclude subintimal techniques.
General Product Specifications
| Specification | Detail / Value |
| Product Name | Dolphin Sub-Intimal Entry Catheter |
| Intended Use | Facilitates subintimal dissection and re-entry in chronic total occlusion (CTO) or heavily diseased vessels (peripheral or coronary) |
| Catheter Design | Specially shaped distal tip or “re-entry” needle to access the true lumen from a subintimal plane |
| Material | Pebax/Polyamide shaft with braided reinforcement, possible radiopaque or tungsten tip |
| Outer Diameter (Fr) | ~2.0–3.5 Fr for coronary or ~3.5–4.5 Fr for peripheral usage (adjust as appropriate) |
| Inner Lumen | Typically 0.014” guidewire compatibility |
| Working Length | ~80–150 cm (varies by product code) |
| Tip Configuration | Tapered, angled, or “needle” re-entry tip, radiopaque marker for precise subintimal guidance |
| Marker Bands | 1–2 near the distal segment for fluoroscopic visualization |
| Sheath Compatibility | 4F–6F (small coronary variants), 5F–7F (peripheral variants) |
| Sterility | Sterile (Ethylene Oxide) |
| Single Use | Yes |
| Shelf Life | ~2–3 years if stored in sealed packaging at 15–25 °C |
| Clinical Indications | Re-entering true lumen in CTOs, subintimal approach in peripheral arteries (e.g., superficial femoral), or advanced coronary CTO crossing |
| Contraindications | Extremely tortuous or heavily calcified vessels, known device material allergies, or situations unsuited for subintimal strategy |
Dolphin Sub-Intimal Entry Catheter
| Fr Size | Working Length (cm) | Tip Style | Product Code | Notes |
| 2.0 Fr | 80 | Tapered (Needle Tip) | DOL-SI-2.0-80-TP | Ultra-low profile for coronary subintimal re-entry |
| 2.0 Fr | 100 | Angled Needle | DOL-SI-2.0-100-AN | Slightly angled tip, moderate length |
| 2.3 Fr | 80 | Straight “Re-Entry” | DOL-SI-2.3-80-ST | Balanced OD for small peripheral or coronary usage |
| 2.3 Fr | 135 | Tapered (Needle Tip) | DOL-SI-2.3-135-TP | Extended length, deeper CTO crossing |
| 2.6 Fr | 100 | Angled “Re-Entry” | DOL-SI-2.6-100-AN | Mid-range OD plus angled tip for subintimal SFA approach |
| 2.6 Fr | 135 | Straight “Re-Entry” | DOL-SI-2.6-135-ST | Long length for complicated multi-segment occlusions |
| 3.0 Fr | 100 | Tapered (Needle Tip) | DOL-SI-3.0-100-TP | Slightly larger OD for peripheral subintimal re-entry |
| 3.0 Fr | 135 | Angled “Re-Entry” | DOL-SI-3.0-135-AN | Extended length, angled tip for advanced re-entry strategy |
| 3.5 Fr | 100 | Straight Needle | DOL-SI-3.5-100-ST | Larger OD for robust push in heavily calcified vessels |
| 3.5 Fr | 135 | Tapered (Needle Tip) | DOL-SI-3.5-135-TP | Max length for tall patients or extensive subintimal navigation |
| 4.0 Fr | 135 | Angled “Re-Entry” | DOL-SI-4.0-135-AN | (If your line extends to 4.0 Fr or beyond for large peripheral usage) |
