Orthopedic Drill Guide Collection Chamber for Debris Evacuation
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Solution Overview
Problem
Conventional orthopedic drills struggle to effectively evacuate drilling debris and swarf, especially in revision surgeries involving metal and plastic implants, leading to obscured drilling sites and overheating due to the accumulation of swarf, including long strings of material from flexible materials like PEEK.
Innovation Solution
An orthopedic drilling system with a collection chamber positioned between the drill guide and drill bit, featuring a hub with irrigation and suction outlets, a cannulated drill bit, and a reciprocating drill guide biased by a spring, which defines a chamber to evacuate debris and swarf from the drilling site, reducing interference and heat buildup.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If conventional irrigation and suction are used to clean debris, then some debris removal is achieved, but swarf accumulation persists and drilling site remains obscured
Solution Approach 1:
The invention extracts the harmful swarf from the drilling site by introducing a collection chamber that actively captures debris at its source. The chamber is positioned to receive swarf as it is generated, separating it from the drilling site before it can accumulate and obscure the view, thereby directly addressing the limitation of conventional irrigation and suction methods.
Solution Approach 2:
The collection chamber acts as an intermediary structure between the drilling site and the external environment. It intercepts swarf particles that would otherwise escape into the surgical field, providing a dedicated pathway for debris removal that complements and enhances the conventional irrigation and suction system.
2Productivity
If drilling continues without effective debris removal, then drilling progress is maintained, but overheating occurs due to swarf accumulation
Solution Approach 1:
The collection chamber continuously extracts swarf from the drilling zone, preventing the accumulation that leads to overheating. By removing the heat-generating debris at the source, the system maintains lower temperatures at the drilling site while allowing continuous drilling operation without interruption for cooling.
Solution Approach 2:
The chamber provides continuous debris removal throughout the drilling process, ensuring that swarf is constantly evacuated rather than allowing periodic accumulation. This continuous action maintains optimal thermal conditions throughout the entire drilling operation, enabling sustained productivity without temperature-related interruptions.
3Volume of stationary object
If drill bit diameter is reduced to define chamber, then debris collection space is created, but drill bit cutting capability is reduced
Solution Approach 1:
The drill bit is segmented into distinct functional zones: a reduced-diameter intermediate section that defines the collection chamber space, and a larger-diameter cutting section that performs the actual drilling. This segmentation allows each portion to be optimized for its specific function - the smaller section for chamber formation and the larger section for effective material removal.
Solution Approach 2:
Different sections of the drill bit assembly have different diameters optimized for different purposes. The intermediate portion has a smaller diameter specifically where it defines the collection chamber, while the cutting portion maintains a larger diameter for effective drilling. This local variation in geometry allows the system to achieve both debris collection and cutting capability without compromising either function.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system efficiently collects and removes debris and swarf, improving drilling precision and reducing temperature increases during orthopedic surgeries, including those with legacy medical implants, by effectively managing swarf accumulation and interference.
Implementation Method 1
The hub may include a spring interconnected to the drill guide to bias the drill guide along the longitudinal axis
Implementation Method 2
The suction outlet may be in communication with the chamber
Implementation Method 3
The hub may include irrigation inlet and a suction outlet. The drill bit may be cannulated to define a throughbore and the throughbore may be in communication with the irrigation inlet
Data Source
AI summary
An orthopedic drilling system having a collection chamber positioned between a drill guide and a drill bit proximately to the flute of the drill bit to evacuate debris and swarf from a drilling site. The drill bit may be cannulated to define a throughbore in communication with an irrigation inlet. The drill guide can reciprocate into and out of a hub and be connection to a suction source. The flute of the drill bit may have a first outer diameter that is larger than a second outer diameter of an intermediate portion of the drill bit positioned proximately to the flute to define the chamber between the drill bit and the drill guide. Alternatively, the drill guide may have a first inner diameter positioned about the flute of the drill bit and a second, larger inner diameter proximate to the flute to define the collection chamber.