Flexible Bone Drill Guide With Adjustable Angle Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current bone drills used in arthroscopic surgery lack flexibility, requiring multiple instruments and limiting the surgeon's mobility during procedures for removing bony protrusions and preparing the acetabular seat for hip or shoulder prostheses, which can lead to incomplete removal and increased risk of damaging soft tissues.
Innovation Solution
A flexible bone drill guide that allows adjustable angle inclination, comprising a cylindrical structure with interlocking bodies and a control mechanism to position the drill precisely, enabling the flexible scraper element to be inserted and adjusted for optimal bone resection while preventing accidental contact with non-target tissues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a motorized bone drill with pre-set curvature is used to guide the flexible drill to the target point, then the drill can reach the bony outgrowths at pre-set angles, but the surgeon's flexibility in handling the drill during the operation is significantly reduced and multiple instruments are required
Solution Approach 1:
The guide body is designed with a movable adjustment mechanism that allows the surgeon to dynamically change the drill's entry angle and orientation during the procedure. The guide body can be rotated and positioned at different angles relative to the acetabular cup, transforming a static pre-set angle system into a dynamic adjustable one, thereby maintaining positioning accuracy while significantly improving surgical flexibility
Solution Approach 2:
The instrument is divided into separate functional components: a guide body with adjustment mechanisms, a flexible bone drill, and a control mechanism. This segmentation allows each component to perform its specific function independently - the guide body provides positioning, the flexible drill performs resection, and the control mechanism enables angle adjustment - eliminating the need for multiple specialized instruments while maintaining precision
2Manufacturing precision
If a semi-circular bone drill with a convex rough surface is used to manually scrape the acetabular cup, then the bony spurs can be removed, but the instrument's mobility is excessively reduced and it cannot adapt to different surgical scenarios
Solution Approach 1:
The flexible bone drill with adjustable guide is designed to perform multiple functions: it can remove bony outgrowths in FAI cases, smooth the acetabular cup surface in primary hip replacement, and clean osteophytes in revision surgery. The adjustable guide mechanism and flexible drill shaft allow the single instrument to adapt to different surgical scenarios and anatomical variations, replacing multiple specialized instruments
Solution Approach 2:
The guide mechanism allows continuous adjustment of the drill's entry angle and orientation parameters. The surgeon can modify the guide body's position and angle to match different surgical requirements - whether for FAI debridement, initial cup preparation, or revision surgery - enabling one instrument to handle varying anatomical conditions and surgical approaches
3Reliability
If multiple instruments are used for different surgical tasks, then specific functions can be performed, but the overall device complexity increases and surgical efficiency decreases
Solution Approach 1:
The invention merges the functions of multiple specialized instruments into a single integrated system. The adjustable guide body combines positioning, angulation, and orientation control, while the flexible bone drill integrates cutting and scraping capabilities. This unified instrument replaces the need for separate pre-set angle drills, semi-circular scrapers, and other specialized tools, reducing device complexity while maintaining functional reliability through the versatility of the adjustable mechanism
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A guide for flexible bone drill comprises a first body (2) provided internally with a through channel (4), and a second body (3), that is internally hollow, into which the first body (2) can be inserted. The second body is provided with a through hole (6) suitable to be placed in fluidic connection with the through channel (4) of the first body (2). The second body (3) and the first body (2) slide relative to one another to vary the relative position of the hole (6) with respect to the through channel (4), thus changing the exit angle of the flexible bone drill (10) which is inserted into the through channel (4) in the first body (2) and emerges from the through hole (6) in the second body (3).