Castroviejo Caliper Str. 9cm

Castroviejo Caliper Str. 9cm

The Castroviejo Caliper Str. 9cm is manufactured from German-grade surgical stainless steel with a passivated satin finish that resists corrosion across repeated sterilization cycles. The instrument measures 9 cm (approximately 3.5 inches) in overall length, featuring two slim, crossed straight shafts joined at a central ball-joint pivot. The finely tapered, straight pointed tips extend well beyond the pivot and open bilaterally with controlled arm separation. A curved graduated base carries the straight ophthalmic caliper 20mm scale, etched from 0 to 20 mm in precise 1 mm increments.

A knurled thumb-screw on the lateral shaft locks arm separation once the target measurement is recorded, preventing any drift before the reading transfers to the surgical plan. This castroviejo caliper straight configuration tolerates full autoclave sterilization at 134°C and is compatible with ultrasonic cleaning and chemical disinfection. The passivated surface guards against oxidation between cycles, and standard boil, performance, and shape quality-control tests are completed before dispatch, confirming reliable reusability.

Ophthalmic surgeons use the Castroviejo Caliper Str. 9cm as a standard strabismus measuring instrument during extraocular muscle surgery. After exposing the target muscle through a conjunctival incision, the surgeon opens the straight pointed tips across the muscle belly and reads the graduation scale directly to determine the precise millimetre distance for muscle recession or resection. The straight tip geometry allows unobstructed linear access to the muscle surface, which curved variants cannot replicate in this approach.

Where ophthalmic surgery leaves no room for approximation, instrument selection becomes as important as surgical technique. Leader Surgical stocks this caliper knowing that eye surgeons require verified dimensional accuracy, dependable locking action, and sterilization-grade material in every instrument that enters the operative field, and this straight-tip variant delivers all three.

What is the primary measurement range for this 9cm model?
While lengths are standard at 9cm, the measuring range typically varies by manufacturer between 0–20mm and 0–40mm. Some specialized versions offer 1mm increments.