Articulating Debrider Blade Tip With Pull-Wire Access Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing handheld surgical instruments, such as microdebriders and drills, face limitations due to pre-bent or straight implements that restrict access to certain areas within cavities like sinus cavities, preventing effective use in all regions.
Innovation Solution
A handheld surgical instrument with a distal portion that can be articulated via a pull wire mechanism, allowing the distal end to bend up to 90 degrees and adjust its angle for better access to surgical sites, controlled by a handpiece assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a pre-bent implement is used, then access to certain surgical sites is improved, but the ability to reach other areas is limited
Solution Approach 1:
The implement is designed with a flexible articulation mechanism that allows the distal end to dynamically change its angle relative to the shaft. The implement can transition between straight and bent configurations, and can be articulated to various angles (e.g., 0°, 45°, 90°) depending on the surgical requirements. This dynamic adaptability resolves the contradiction by allowing the implement to optimize its shape for each specific surgical site rather than being fixed in a pre-bent configuration.
Solution Approach 2:
The implement allows changes in its geometric parameters, specifically the angle of the distal end relative to the shaft. By enabling the implement to change its articulation angle on-demand during the surgical procedure, the system can adapt to different surgical sites and tissue types, thereby resolving the limitation of fixed pre-bent implements while maintaining ease of operation.
2Adaptability or versatility
If a straight implement is used, then versatility is improved, but access to certain difficult-to-reach areas is limited
Solution Approach 1:
The implement incorporates a dynamic articulation mechanism that allows the distal end to be bent to specific angles (e.g., 45°, 90°) when needed. This enables the implement to maintain its straight configuration for general versatility while providing the capability to articulate into difficult-to-reach areas when required, thus resolving the contradiction between versatility and access capability.
3Ease of operation
If multiple implements are used to access different areas, then access capability is improved, but device complexity increases
Solution Approach 1:
The implement is designed as a universal, multi-functional tool that can access various surgical sites through its articulation capability. A single implement can be articulated to different angles and orientations to reach multiple difficult-to-access areas, eliminating the need for multiple specialized implements. This resolves the contradiction by providing access capability equivalent to multiple implements while using only one device.
Solution Approach 2:
The dynamic articulation mechanism allows a single implement to assume multiple configurations and orientations during the surgical procedure. By enabling the implement to change its shape and angle on-demand, the system provides the access capability of multiple fixed implements through one adaptable implement, thereby reducing overall device complexity.
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
Enables the instrument to reach and operate effectively in previously inaccessible areas by allowing flexible positioning of the cutting implement, enhancing surgical precision and efficacy.
Implementation Method 1
The handheld surgical instrument can include a pull wire, such as a flat pull wire, that is anchored at the distal portion of the handheld surgical instrument and can extend towards the handpiece. The handpiece can include an assembly that can push and/or pull the flat pull wire.
Data Source
AI summary
A handheld surgical instrument having a handpiece and a shaft extending from the handpiece is provided. The instrument includes a cutting implement disposed at a distal end of the shaft and an articulation portion disposed proximate to the cutting implement. The articulation portion includes a set of first slits and a set of second slits opposite the first set of slits. The articulation portion also has first and second passageways disposed in the slits along with first and second flat pull wires disposed in the passageways. The instrument also has an articulation control assembly that includes an articulator having first and second anchor points coupled with the first and second flat pull wires. The articulator moves the first flat pull wire in a first direction and moves the second flat pull wire in a second direction opposite the first direction during actuation.