Cooley Mitral Valve Dilator 5-18mm

Clinical Application

Provides controlled, intraoperative dilation of stenotic mitral valve orifices during reparative procedures. Commonly used during open mitral commissurotomy or valve-sparing operations to incrementally enlarge the valve orifice, confirm leaflet mobility, and establish an appropriate functional annular diameter prior to final repair or replacement. The calibrated diameter range supports selection of an appropriate target size to balance orifice area with leaflet coaptation.

Design & Configuration

The instrument's adjustable, graduated dilating mechanism allows stepwise expansion across a 5-18 mm diameter range, enabling the surgeon to perform gradual, controlled dilation. A compact, low-profile shaft permits passage through a standard left atriotomy or trans-septal exposure while minimizing interference with the subvalvular apparatus. Calibrated markings support reproducible sizing and documentation during the procedure.

Instrument Specifications

• Instrument type: Mitral valve dilator
• Pattern / model: Cooley
• Configuration: Adjustable dilator, calibrated 5-18 mm
• Size: 5-18 mm (diameter range)
• Typical use: Open mitral valve dilation / commissurotomy during cardiac surgery
• Material: Stainless steel; reusable

Material & Construction

Manufactured from surgical-grade stainless steel for durability and resistance to corrosion. Constructed for repeated use and designed to withstand standard hospital sterilization cycles, supporting high-volume operative environments and instrument sets that require consistent performance across procedures.

Quality & Compliance

Manufactured by FDA-registered OEM facilities and produced under strict quality control standards.

Brand Comparison

Comparable in form and function to equivalent instruments offered by major US medical suppliers.

Availability & Returns

• In-stock lead time: ships within ~1 week
• Out-of-stock lead time: 2–4 weeks
• Returns: 30-day return policy