The Boston Scientific MACH1 JL4 ST 6F Coronary Guiding Catheter (REF H749343566740) is a single-use percutaneous guiding catheter engineered to provide stable coaxial engagement of the left coronary ostium and predictable device delivery during percutaneous coronary intervention (PCI). The MACH1 platform is designed around a one-piece, full-length braided shaft intended to deliver torque response, backup support and a large, smooth inner lumen for contrast injection and interventional device passage.

Key Features
- Curve: Judkins Left 4.0 with Short Tip (JL4 ST) configuration for left main coronary access.
- French size: 6F outer diameter for radial or femoral access workflows.
- Shaft construction: One-piece full-length stainless steel braid intended to support 1:1 torque transmission and kink resistance.
- Inner lumen: Large, polished PTFE-lined lumen designed to facilitate device delivery and contrast flow.
- Atraumatic soft tip: Designed to reduce the risk of ostial trauma during engagement.
- Hydrophilic / lubricious outer surface as described in manufacturer literature to support smooth navigation.
- Single-use, sterile packaged device.
- Working length: Not specified in the located sources.

Clinical Applications
- Selective engagement of the left coronary artery during diagnostic and interventional cardiology procedures.
- Support catheter for delivery of coronary guidewires, balloon catheters, stents and adjunctive PCI devices.
- Procedures requiring a short-tip Judkins Left configuration, such as horizontally oriented or shallow left main anatomy.
- Use via femoral or radial arterial access, per institutional protocol and operator discretion.

Product Information
- Brand: Boston Scientific
- Product line: MACH1 Coronary Guide Catheter
- Curve: JL4 ST (Judkins Left 4.0, Short Tip)
- Size: 6F
- Category: Coronary Guiding Catheter
- REF / UPN: H749343566740
- Sterility: Sterile, single-use
- Latex content: Not specified in the located sources
- Country of origin and packaging quantity: Not specified in the located sources
- Regulatory status: Refer to the official manufacturer Instructions for Use (IFU) and local regulatory documentation prior to procurement and clinical use.