Arthroscopy Knife Guidewire Trajectory Control
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Solution Overview
Problem
During hip arthroscopy, surgeons face challenges in achieving precision control when detaching the labrum from the acetabular rim due to uncertainty about the exit point of the arthroscopy knife, leading to difficulties in accessing areas near the hip joint.
Innovation Solution
A method and device involving a cannulated needle and guidewire system, where the arthroscopy knife is coupled with a guidewire to be inserted into the joint area, allowing for precise detachment and reattachment of soft tissue from the bone, with a curved distal end and through hole for improved alignment and control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a traditional arthroscopy knife is used to detach the labrum from the acetabular rim, then the surgeon can perform the detachment, but the precision control is poor because the exit point of the knife is not known prior to making the cut
Solution Approach 1:
A guidewire is introduced as an intermediary element to establish a predetermined trajectory through the joint. The guidewire serves as a guide that directs the arthroscopy knife along a known path, allowing the surgeon to control the exit point and trajectory of the knife. This mediator enables precise positioning without requiring the surgeon to manually navigate the knife through unknown anatomy.
Solution Approach 2:
The guidewire is inserted first to establish the desired trajectory and exit point before the actual knife cut is made. This preliminary action of placing the guidewire allows the surgeon to plan and visualize the entire path of the knife in advance, ensuring precise control during the subsequent detachment procedure.
2Adaptability or versatility
If the knife is used to make incisions and detach tissue without a guidewire, then the procedure can be completed, but the ability to access specific areas near the hip joint is limited
Solution Approach 1:
The guidewire acts as a mediator that enables the knife to reach specific target areas within the hip joint with known and controlled trajectories. By establishing a guidewire path to the desired location, the surgeon can adaptively access different areas while maintaining precise positioning control throughout the procedure.
3Device complexity
If traditional methods are used without a guidewire system, then the instrument can be inserted directly, but the complexity of controlling instrument movement through the hip capsule increases
Solution Approach 1:
The guidewire system serves as a simplified intermediary that reduces the complexity of controlling knife movement. Instead of requiring complex real-time navigation and control mechanisms, the pre-placed guidewire provides a straightforward mechanical guide that simplifies the insertion and movement control of the arthroscopy knife through the hip capsule.
Data Source
AI summary
The present disclosure relates to a method of use during arthroscopic surgery. The method includes inserting a cannulated needle into a joint area of the body, inserting a guidewire through the needle, removing the needle, and inserting an arthroscopy knife into the joint area via the use of the guidewire. An arthroscopy knife and another method of its use is also disclosed.