Cook Eye Speculum With Locking Screw — Overview

The Cook Eye Speculum with Locking Screw (SA-790-bs5 family) is an adjustable eyelid retractor available in 8mm, 11mm, and 15mm blade sizes, distinguished by a locking screw mechanism that lets the surgeon fix the blade spread at a specific width rather than relying solely on spring tension to hold position.

Why a Locking Screw

A standard self-retaining speculum holds its position through spring tension alone, which is reliable but doesn't allow the surgeon to fix an intermediate spread width beyond what the spring naturally settles at. The locking screw on this design lets the surgeon manually set and secure the blade spread at a chosen width, keeping that exact exposure fixed for the duration of the procedure regardless of any incidental pressure on the instrument. This is particularly useful in longer procedures or where a very specific, unchanging exposure width matters more than the adjustability of spring tension alone.

Size Options

The 8mm size suits narrow palpebral fissures or pediatric-adjacent cases; 11mm is a general mid-range adult size; 15mm provides wider exposure for oculoplastic or reconstructive procedures. Selecting among the three lets the surgeon match the fixed spread to the specific case before locking it in place.

Clinical Use

This speculum is used across general anterior segment surgery, particularly in cases where the surgeon wants a fixed, non-drifting exposure width rather than the natural give of a purely spring-tensioned design — useful in longer procedures or where consistent, unchanging blade position is prioritized.

Material and Construction

Manufactured from surgical-grade stainless steel and hand-finished in Sialkot, Pakistan, with the locking screw mechanism built into the arm assembly without compromising the underlying spring-tensioned retraction the instrument relies on when unlocked.

Sterilization and Care

Fully autoclavable. The locking screw mechanism should be checked for smooth operation and free threading before each use, in addition to standard checks for blade deformation and spring tension.

Ordering

The Cook Eye Speculum with Locking Screw range — SA-790-45 (8mm), SA-790-46 (11mm), and SA-790-47 (15mm) — is supplied by Scatter Instruments to hospitals, surgery centers, and distributors internationally, with bulk pricing and OEM or private-label branding available on request.