The Boston Scientific MACH1 RBR3 SH 6F Coronary Guiding Catheter (REF H749343567590) is a single-use percutaneous coronary intervention support catheter designed to deliver interventional devices to the coronary ostia. The MACH1 family is engineered for a balance of backup support, lumen integrity under stress, and torque transmission, with the RBR3 Short Tip (SH) curve intended for radial backup access of the right coronary artery.

Key Features
- RBR3 SH curve geometry shaped for transradial approaches to the right coronary ostium with a shortened distal tip.
- 6F outer diameter profile compatible with radial-access workflows and diagnostic-to-interventional transitions.
- MACH1 shaft construction intended to provide consistent backup support, kink resistance, and 1:1 torque response.
- Large inner lumen designed to accommodate contemporary interventional devices and contrast delivery.
- Atraumatic soft tip intended to reduce vessel trauma during ostial engagement.
- Hydrophilic-compatible outer surface for tracking through tortuous anatomy. Not specified in the located sources.

Clinical Applications
- Guiding catheter support during percutaneous coronary intervention (PCI).
- Transradial access procedures targeting the right coronary artery.
- Delivery of balloon catheters, coronary stents, and guidewires to the target lesion.
- Diagnostic and interventional contrast injection at the coronary ostium.

Product Information
- Brand: Boston Scientific
- Product Line: MACH1
- Curve: RBR3 (Right Bypass / Right Coronary backup) Short Tip (SH)
- French Size: 6F
- Category: Coronary Guiding Catheter
- REF / UPN: H749343567590
- Use: Single-use, sterile
- Working Length: Not specified in the located sources
- Inner Lumen Diameter: Not specified in the located sources
- Regulatory Status: Refer to manufacturer Instructions for Use and local regulatory documentation.