Surgical Sagittal Blade Cartridge

JP2025520725A5Pending Publication Date: 2026-06-22STRYKER EUROPEAN OPERATIONS LIMITED
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
STRYKER EUROPEAN OPERATIONS LIMITED
Filing Date
2023-06-22
Publication Date
2026-06-22

AI Technical Summary

Technical Problem

Sagittal saw blades experience deflection and deformation when cutting through bone due to non-uniform resistance, leading to suboptimal implant fitting and increased bone removal, especially when cutting deeper or encountering curved surfaces.

Method used

A surgical sagittal blade cartridge with a guide bar composed of three plates, including a central inner plate around which the blade head pivots, enhancing rigidity and reducing deformation by distributing resistance more evenly.

Benefits of technology

The design minimizes blade deflection and ensures precise cutting planes, improving the fit of artificial implants and reducing unnecessary bone removal.

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Abstract

The surgical saw blade cartridge comprises a guide bar formed by three plates. The cartridge has a blade extending distally from the guide bar and having a blade head including a plurality of teeth. The guide bar may be configured to have opposing edges that define mounting features for orienting the guide bar within a mount of a surgical saw. One of the plates may be configured to define a reference feature configured to align and / or verify the orientation of the cartridge by a navigation system. A method of aligning the cartridge within a known coordinate system is disclosed. The method may include determining a deviation between a predicted position of the cartridge and an actual position of the cartridge based on the reference feature, and defining a hybrid position of the cartridge within the known coordinate system based on the deviation.
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