Cooley Mitral Valve Dilator 9-40mm

Clinical Application

This dilator is used by cardiac surgeons to perform controlled dilation of the mitral valve annulus and commissures during procedures for mitral stenosis and during valve repair or replacement. The 9-40 mm range allows the operator to progress through incremental diameters to assess leaflet mobility and valve orifice size, facilitating commissurotomy or sizing maneuvers in both open surgical and selected transatrial approaches.

Design & Configuration

The instrument is configured as a graduated dilator providing a continuous range of dilating diameters from 9-40 mm. This graded geometry permits stepwise enlargement of the valve orifice with tactile feedback, helping the surgeon control commissural separation and avoid over-dilation. The dilating tip profile is intended to engage the valve commissures and annular opening without sharp cutting edges, supporting controlled tissue expansion during the procedure.

Instrument Specifications

• Instrument type: Mitral valve dilator
• Pattern / model: Cooley Mitral Valve Dilator
• Size range: 9-40 mm (graduated diameters)
• Typical use: Mitral commissurotomy, valve dilation during repair or replacement
• Construction: surgical-grade stainless steel, reusable

Material & Construction

Constructed from surgical-grade stainless steel for durability and corrosion resistance. Designed for repeated use and compatible with standard surgical sterilization and reprocessing workflows.

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