The Tycheseal™ Abdominal Aortic Stent Graft System is an endovascular aneurysm repair (EVAR) device developed for the minimally invasive treatment of infrarenal abdominal aortic aneurysms (AAA) and selected aortoiliac aneurysms. The system is engineered to support accurate deployment, durable proximal sealing, and improved conformability in challenging vascular anatomy, including short neck and angulated anatomies.
Product Overview
Tycheseal™ is a modular abdominal aortic stent graft platform designed for:
- Endovascular AAA repair (EVAR)
- Infrarenal abdominal aortic aneurysms
- Aortoiliac aneurysms
- Complex proximal neck anatomies
The system combines:
- Self-expanding nitinol stent framework
- Low-porosity polyester graft material
- Hydrophilic-coated delivery system
- Controlled deployment mechanism
The device is intended to exclude the aneurysm sac from systemic blood flow while maintaining perfusion through the iliac arteries.
Key Features
Advanced EVAR Design
- Modular bifurcated stent graft configuration
- Designed for minimally invasive abdominal aneurysm repair
- Supports treatment of complex aortoiliac anatomy
- Adapted for short-neck aneurysm morphology
Precise Positioning Technology
- Proprietary alignment marker system
- Controlled rotational deployment
- Dual-action release mechanism
- Enhanced positioning accuracy for proximal sealing zones
High Conformability
- Flexible nitinol stent architecture
- Improved wall apposition
- Enhanced kink resistance
- Optimized for tortuous iliac access vessels
Low-Profile Delivery System
- Hydrophilic-coated catheter system
- Reduced vascular trauma during insertion
- Improved trackability through iliac anatomy
- Facilitates percutaneous EVAR access strategies
Technical Specifications
| Specification | Details |
|---|---|
| Product Type | Abdominal Aortic Stent Graft System |
| Procedure Type | EVAR (Endovascular Aneurysm Repair) |
| Stent Material | Nitinol |
| Graft Material | Polyester |
| Configuration | Modular bifurcated system |
| Delivery System | Hydrophilic-coated |
| Main Body Delivery Profile | Minimum 16 Fr |
| Limb Delivery Profile | Minimum 14 Fr |
| Indications | Infrarenal AAA & aortoiliac aneurysm |
| Proximal Landing Zone Requirement | ≥10 mm |
| Suprarenal Angulation | ≤60° |
| Infrarenal Angulation | ≤75° |
| Distal Landing Zone | ≥10 mm |
Clinical Indications
The Tycheseal™ AAA System is indicated for:
- Infrarenal abdominal aortic aneurysms
- Aortoiliac aneurysms
- Patients suitable for endovascular aneurysm repair
- Challenging proximal neck anatomies
- Severely angulated aortic anatomies
EVAR Clinical Advantages
Compared with open surgical aneurysm repair, EVAR procedures may provide:
- Reduced operative trauma
- Smaller access incisions
- Reduced blood loss
- Faster postoperative recovery
- Shorter hospitalization
- Lower perioperative morbidity in selected patients
Structural Design Advantages
Three-Segment Modular Architecture
The modular design helps:
- Accommodate variable patient anatomy
- Improve customization during implantation
- Reduce risk of endoleaks and limb thrombosis
- Support flexible iliac reconstruction
Enhanced Sealing Technology
The stent graft system is engineered to:
- Improve proximal fixation
- Maintain circumferential apposition
- Reduce Type I endoleak risk
- Enhance long-term aneurysm exclusion
Kink Resistance & Durability
The nitinol-reinforced framework is designed to:
- Resist deformation
- Maintain lumen patency
- Improve flexibility in tortuous anatomy
- Support long-term graft durability
Procedure Workflow
Typical EVAR workflow includes:
- Femoral artery access
- Guidewire and sheath insertion
- Main body stent graft deployment
- Contralateral limb cannulation
- Iliac limb deployment
- Balloon molding and sealing verification
- Angiographic confirmation of aneurysm exclusion
The procedure is typically performed under fluoroscopic guidance in hybrid OR or angiography suite environments.
Potential Complications
As with other EVAR systems, potential complications may include:
- Endoleak
- Graft migration
- Limb occlusion
- Access vessel injury
- Stent thrombosis
- Secondary interventions
Patient selection and anatomical assessment are critical for optimal outcomes.
Imaging & Follow-Up
Post-EVAR surveillance commonly includes:
- CTA (Computed Tomography Angiography)
- Duplex ultrasound
- Endoleak monitoring
- Sac diameter evaluation
- Device integrity assessment
Long-term imaging follow-up is important to monitor graft stability and aneurysm sac behavior.
