Tissue Shaver Rotating Burr Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current spinal surgery techniques, especially percutaneous discectomy, face challenges in controlling bone removal devices, leading to unintentional removal of healthy bone tissue or injury to spinal tissue due to limited range of motion and control during bone cutting procedures.
Innovation Solution
A tissue shaver system comprising an outer housing with a cutting burr and a plunger mechanism that rotates to provide a cutting action, along with geared wheels and a spring for biasing, allowing for precise tissue removal through a small incision, with suction to collect the removed tissue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If percutaneous discectomy is used to minimize incision size, then patient recovery time is reduced, but control over bone removal devices is limited leading to potential injury of healthy tissue
Solution Approach 1:
The cutting burr is designed to rotate dynamically during the procedure, allowing the surgeon to control tissue removal through rotational motion while maintaining a small incision. The rotation enables precise control of the cutting action despite the limited access through percutaneous approach
Solution Approach 2:
The geared wheel mechanism acts as an intermediary between the plunger input and the cutting burr rotation. This mechanical intermediary amplifies and controls the rotational motion, providing the surgeon with enhanced control over the cutting burr while maintaining the benefits of minimally invasive access
2Productivity
If standard bone removal devices are used, then tissue removal capability is sufficient, but unintentional removal of healthy bone tissue occurs due to limited control
Solution Approach 1:
The cutting burr is designed with specific local characteristics including its rotational motion capability and geometric shape, allowing precise control of where and how tissue is removed. This enables the surgeon to target only the herniated disc material while preserving surrounding healthy structures
Solution Approach 2:
The system provides tactile feedback to the surgeon through the plunger mechanism, allowing real-time control and adjustment of the cutting depth and intensity. This feedback loop prevents over-cutting or unintended removal of healthy tissue by alerting the surgeon to resistance changes
3Object-affected harmful factors
If minimally invasive techniques are used, then damage to surrounding tissue is reduced, but surgical precision and control are compromised
Solution Approach 1:
The rotating cutting burr introduces a dynamic element to the minimally invasive tool, enabling precise control of tissue removal through rotational speed and direction while maintaining small incision size. This dynamic capability compensates for the reduced control typically associated with percutaneous approaches
Solution Approach 2:
The cutting burr rotation adds a rotational dimension to the linear percutaneous access, creating a multi-dimensional cutting action that enhances precision. This rotational degree of freedom allows for more controlled and accurate tissue removal despite the limited access path
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 precise shaving of tissue without excising it, reducing damage to surrounding tissue and facilitating minimally invasive procedures by providing controlled tissue removal and suction of debris, thus improving surgical precision and reducing recovery time.
Implementation Method 1
a spring fixedly coupled with the distal end of the plunger as to proximally bias the plunger when the plunger is translated distally
Implementation Method 2
a first geared wheel operably coupled with the proximal end of the longitudinal shaft; a second geared wheel rotatably coupled with the distal end of the plunger; and the second geared wheel rotatably coupled with the first geared wheel
Data Source
AI summary
A tissue shaver and methods of use is disclosed. The tissue shaver operates to remove tissue.