The transseptal puncture needle is used to gain access to the left atrium through the interatrial septum during interventional procedures such as atrial fibrillation ablation, occluder implantation, or other structural heart interventions.

Key Features:
– Diameter: 18G (compatible with 8–9 Fr introducers)
– Length: 63 to 85 cm (depending on configuration)
– Material: medical-grade stainless steel
– Distal tip: beveled for precise septal puncture
– Markings: radiopaque for fluoroscopic visualization
– Shape: straight or pre-shaped (commonly SL0, BRK, etc.)

Advantages:
– Precise visualization under fluoroscopy
– Optimal bend angle for safe septal crossing
– Secure connection with introducer and dilator
– Sterile, single-use packaging

Applications:
– Transseptal access procedures
– Radiofrequency ablation
– Implantation of intracardiac devices