The Shunmei Shun GN4 PTCA Guide Wire (REF 626854) is a coronary guidewire designed to support interventional cardiologists during percutaneous transluminal coronary angioplasty (PTCA), with a configuration intended for chronic total occlusion (CTO) crossing attempts. It is supplied as a single-use, sterile device for use in catheterization laboratories.

Key Features
- CTO-oriented design intended to assist in negotiating heavily fibrotic or calcified coronary lesions.
- Core-to-tip construction aimed at delivering tactile feedback and torque response during lesion probing.
- Hydrophilic and/or polymer coating segments to support tracking through tortuous coronary anatomy. Specific coating composition: Not specified in the located sources.
- Shapeable distal tip to allow operator-defined tip curves prior to insertion.
- Compatible with standard microcatheters and over-the-wire / monorail PTCA systems.
- Length, diameter, and tip load values: Not specified in the located sources.

Clinical Applications
- Guidewire support during PTCA procedures targeting chronic total occlusions of the coronary arteries.
- Facilitation of microcatheter, balloon catheter, and stent delivery system advancement across the lesion.
- Use within antegrade wire escalation strategies in CTO percutaneous coronary intervention workflows.
- Intended for use by trained interventional cardiologists in a hospital cath lab environment.

Product Information
Brand: Shunmei
Product Name: PTCA Guide Wire (CTO) - Shun GN4
REF / UPN: 626854
Category: Coronary Guidewires
Device Type: Single-use sterile coronary guidewire
Indication Focus: Chronic total occlusion crossing during PTCA
Sterilization, packaging configuration, and shelf life: Not specified in the located sources.
Regulatory clearances: Not specified in the located sources.