Modular Patient-Specific Hip Instrumentation for Adjustable Cutting
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Solution Overview
Problem
Existing patient-specific orthopedic surgical instruments lack flexibility, requiring additional time and resources to adjust cutting plane placement or angle, leading to increased tissue trauma and surgical exposure.
Innovation Solution
A customizable orthopedic surgical assembly comprising a patient-specific base portion with a contoured recess and multiple guide plates, allowing for adjustable positioning and angle of the cutting slot relative to the femur neck, thereby facilitating precise and adaptable surgical procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If patient-specific orthopedic surgical instruments are made unitarily formed, then manufacturing precision and patient customization are improved, but adaptability and surgical flexibility deteriorate
Solution Approach 1:
The surgical instrument is divided into a patient-specific base portion and separate guide plates. The base portion is customized to the patient's anatomy while the guide plates can be selectively exchanged to adjust cutting plane placement and angle, resolving the contradiction between customization and flexibility.
Solution Approach 2:
The instrument transitions from a static unitary design to a dynamic modular design where guide plates can be selectively attached and removed. This allows the cutting plane parameters to be adjusted during surgery while maintaining the customized fit of the base portion.
2Object-affected harmful factors
If patient-specific orthopedic surgical instruments are customized for each patient, then tissue trauma and surgical exposure are reduced, but device complexity and production time increase
Solution Approach 1:
The instrument separates the customized base portion from the standardized guide plates. This allows the complex customization to be confined to the base portion while the guide plates remain simple, interchangeable components, reducing overall device complexity.
Solution Approach 2:
Multiple guide plates are designed to work with a single patient-specific base portion. This universal interface allows one customized instrument to perform multiple cutting plane configurations, reducing the need for entirely new custom instruments for different surgical scenarios.
3Manufacturing precision
If patient-specific orthopedic surgical instruments are customized for each patient, then surgical precision is improved, but production time and resource consumption increase
Solution Approach 1:
The instrument is segmented into a once-customized base portion and multiple pre-fabricated guide plates. This allows the time-consuming customization to be performed only once per patient, while subsequent adjustments use pre-made components, significantly reducing production time.
Solution Approach 2:
The base portion is customized in advance based on patient imaging data, while the guide plates are prepared in advance in a standardized format. This preliminary preparation of components allows rapid assembly during surgery without re-customization.
Data Source
AI summary
An orthopedic surgical assembly are configured to be received on a neck of a femur between a head and a shaft of the femur. The embodiment may include a base portion with a body portion defining a contoured recess, wherein the contoured recess is configured to be received adjacent a portion of the neck of the femur. A first guide plate may include a mounting tab and a cutting slot, the mounting tab being configured to be selectively coupled to the base portion so that the cutting slot is disposed adjacent the neck of the femur in a first position.