Arcuate Veterinary Surgical Guide for TPLO Osteotomy
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Solution Overview
Problem
Existing surgical guides for tibial plateau levelling osteotomy (TPLO) procedures are cumbersome, prone to errors, and do not easily adapt between left and right surgeries, due to their complex multiple moving parts and lack of securement for the saw blade during cutting.
Innovation Solution
A surgical guide with a simplified design featuring an arcuate body with a single cutting channel, elongate arms for secure fixation, and apertures for receiving fixation devices, allowing for precise guidance of the osteotomy tool and easy adaptation to different animal shapes and sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple moving parts are used in the guide to accommodate different scenarios, then adaptability is improved, but device complexity and ease of operation deteriorate
Solution Approach 1:
The guide body is designed with a single integrated structure that can accommodate different cutting scenarios through fixed geometric features rather than multiple moving parts. The arcuate body with integrated cutting channels and fixation apertures provides universal adaptability across different animal sizes and TPLO variations without requiring complex adjustment mechanisms.
2Adaptability or versatility
If multiple moving parts are used in the guide, then adaptability is improved, but ease of operation worsens due to time-consuming positioning
Solution Approach 1:
The guide is pre-configured with fixed cutting channels and pre-positioned fixation apertures that are optimally located before use. The arcuate geometry and integrated features are predetermined to work with various animal anatomies, eliminating the need for intraoperative adjustment and positioning of multiple components.
3Measurement precision
If the guide extends significantly outwardly from the tibia, then guidance accuracy is improved, but working space at the surgical site deteriorates
Solution Approach 1:
The guide employs localized cutting channels that are precisely positioned only where needed on the tibial surface. The arcuate body conforms to the local anatomy and provides guidance exactly at the osteotomy site without requiring extensive outward extension, thereby preserving surgical working space while maintaining cutting accuracy.
4Device complexity
If the saw blade is not guided on both sides, then device complexity is reduced, but manufacturing precision of the bone cut deteriorates
Solution Approach 1:
The guide utilizes the natural arcuate curvature of the tibial plateau to provide effective blade guidance. The curved cutting channel follows the anatomical arc of the osteotomy, allowing the saw blade to be guided along the curved path with inherent geometric constraint, achieving precision without requiring bilateral rigid guidance structures.
Data Source
AI summary
The invention relates to a surgical guide for receiving and guiding a surgical instrument performing a bone osteotomy, the guide including a body, at least one cutting channel extending in length along the first body face and extending through the body, the cutting channel having a discrete length such that the channel is bounded by the first and second body faces through which it extends, two or more apertures adapted to receive a fixation device, the guide including one or more elongate arms or arm assemblies directly or indirectly connected to and extending from one side wall of the body. The guide may be used in canine tibial plateau levelling osteotomy and other orthopedic or surgical procedures. Also described are methods for use of the guide.