Gyrus ACMI 70131322 Prop Trial 3.0mm Stainless Steel (Not for Implantation) 1/EA

• Model: 70131322
• Material: Stainless Steel
• 3.0mm

The Gyrus ACMI 70131322 Prop Trial 3.0 mm Stainless Steel Trial is a specialized surgical accessory used in middle ear reconstructive procedures (ossiculoplasty). Its role is to help the otologic surgeon intraoperatively measure the gap between ossicular remnants (such as between the incus and stapes / footplate) and thereby choose the correct length of prosthesis (PORP/TORP) to fill that gap. Because precision matters in the micrometer scale, a stainless steel trial of fixed known length (3.0 mm in this case) offers a rigid, known standard against which to compare before committing to implanting a prosthesis.

During the procedure, the surgeon would insert the trial prosthesis in the surgical site, assess fit and alignment, and ensure that the length does not impinge on surrounding structures (e.g. the tympanic membrane or cochlear end). Once satisfied that the 3.0 mm size is appropriate, the corresponding implant in that same length (or slightly adjustable variant) can be chosen. Because the trial is marked “not for implantation,” its design emphasizes dimensional accuracy and structural rigidity, not necessarily long-term biocompatibility or surface finishing optimized for implantation.

As one of a set of trial lengths (catalog ranges include 2.0, 3.0, 4.0 mm etc.) offered under Gyrus / Olympus ENT accessory kits, the 70131322 trial helps reduce in-surgery guesswork, simplifying prosthesis selection and minimizing intraoperative resizing. The use of such trials is standard practice in ossicular chain reconstruction to improve fit, reduce the chance of prosthesis mismatch, and potentially lower revision rates.