Articulating Broach Handle for Minimally Invasive Hip Surgery
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Solution Overview
Problem
Current surgical instruments for preparing the femoral bone during hip replacement surgery are limited in their ability to perform minimally invasive procedures effectively, often requiring larger incisions for proper alignment and sizing of the femoral component, which can lead to tissue damage and increased complications.
Innovation Solution
An articulating broach handle with adjustable offset configurations allows for 360-degree rotation and discrete incremental articulation of its sections, enabling precise alignment and sizing of the femoral component through smaller incisions, accommodating both left and right hip replacements and varying patient anatomies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional surgical instruments are used for femoral preparation, then proper alignment and sizing of the femoral component can be achieved, but larger incisions are required causing tissue damage and increased complications
Solution Approach 1:
The broach handle is divided into multiple sections (proximal section, intermediate section, distal section) that can articulate relative to each other. This segmentation allows the instrument to navigate through smaller incisions while maintaining the capability to achieve proper alignment and sizing of the femoral component through the articulating mechanisms.
Solution Approach 2:
The broach handle incorporates articulating joints with locking mechanisms that allow dynamic adjustment of the sections' relative positions. The joints can be unlocked to change the configuration of the handle and locked to maintain the desired alignment, providing adaptability for minimally invasive approaches while ensuring precise femoral component placement.
2Object-affected harmful factors
If minimally invasive techniques are used with smaller incisions, then tissue damage is reduced, but proper alignment and sizing of the femoral component becomes more difficult
Solution Approach 1:
The articulating broach handle adds dimensional flexibility by allowing the sections to rotate and articulate in multiple planes. This enables the surgeon to access the femoral canal through a smaller, more lateral incision while still achieving the necessary alignment and sizing precision through the multi-axis articulation capabilities of the handle sections.
Solution Approach 2:
The articulating joints allow change in the geometric parameters of the instrument configuration. By adjusting the articulation angles and locking positions, the effective length, angle, and orientation of the broach relative to the handle can be modified to achieve proper alignment and sizing even when accessing through smaller incisions.
3Adaptability or versatility
If multiple specialized broach handles are used for different hip replacements and patient anatomies, then versatility is achieved, but device complexity and cost increase
Solution Approach 1:
The articulating broach handle is designed as a universal instrument that can accommodate different hip replacement procedures and patient anatomies through its adjustable articulating sections. A single handle can be configured for left or right hip replacements, different approaches (anterior, lateral, posterior), and various patient-specific anatomical variations, eliminating the need for multiple specialized handles.
Solution Approach 2:
The dynamic articulating joints with locking mechanisms allow the single broach handle to adapt its configuration for different surgical scenarios. The handle can be adjusted intraoperatically to match different anatomical requirements and surgical approaches, providing the versatility of multiple specialized instruments through one adaptable device.
Data Source
AI summary
A surgical instrument for releasable connection to a surgical tool having two or more sections that are able to articulate 360 degrees in differing increments and directions. The articulation of the sections allows for the distal end to be spatially offset from the proximal, yet maintain parallel longitudinal axes. The surgical instrument includes a force disc at the proximal end upon which a surgeon can exert a linear force which is transmitted to the distal end having a second tool such as a broach firmly attached thereto.