Description
Cooley Dilator
The Cooley valve dilator opens a narrowed valve or vessel in small, measured steps. Its blades spread from 8 to 15 mm, so one tool covers a useful range.
Cooley valve dilator: an 8 to 15 mm range
The blade opening runs from 8 mm up to 15 mm. Because of that range, a single instrument can replace several fixed sizes. It also keeps the tray lighter and simpler to count.
Controlled dilation
Surgeons open the blades gradually rather than forcing a large tip through at once. As a result, they can judge resistance as the opening grows. That gentle approach suits delicate pediatric structures.
Where it fits
Teams use it in cardiac and vascular procedures that call for stretching a stenosis. Meanwhile, the 8 mm starting point suits small openings. For larger adult valves, a wider dilator may serve better.
Pairing with a larger dilator
Some teams keep both a Cooley valve dilator and a wider mitral dilator on hand. That way, they can cover small and large openings in one case. So check the range you need before choosing.
Looking after Cooley valve dilator
Close the blades before rinsing, then open them again for cleaning between the surfaces. Plus, use a soft brush along the blade edges to lift dried residue. Store the dilator closed and apart from heavier instruments that could bend it.
Cooley valve dilator specifications
- Blade opening: 8 to 15 mm
- Single adjustable instrument
- For controlled dilation
- Pediatric and small-structure work
Supply and warranty
We stand behind this instrument with a three-year manufacturing warranty. In addition, every shipment gets a hand inspection in Atlanta. You can find care tips in our FAQs. Surgical stainless grades fall under ASTM F899. For openings up to 42 mm, see our Tubbs mitral dilator. The rest of our cardiovascular and thoracic instruments is one click away.
For professional use only. See our care and sterilization guide for notes on photos and materials, and our returns policy before you order.






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