Bendable Tissue Removal Head with Protective Cover
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Solution Overview
Problem
Existing spinal stenosis decompression apparatuses face challenges in adapting to complex surgical sites due to fixed shapes, difficulty in navigating deep and multiple surgical sites, and risk of damaging surrounding tissues with non-adjustable and non-bendable designs, especially in minimally invasive surgeries.
Innovation Solution
A medical apparatus with an adjustable and bendable tissue removal head, featuring a protective cover and control mechanism to adjust the angle and position of the tissue removal head, and an eccentric design to reduce the distal end size, allowing for flexible operation and protection of unnecessary tissues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed-shaped working sheath is used, then the device structure is simple, but it is difficult to arrive at multiple deep surgical sites and adapt to complex outer shapes through minimally invasive channels
Solution Approach 1:
The working sheath is designed with a bendable section containing multiple bending units that can be dynamically adjusted during surgery. Each bending unit includes movable connection components that allow the sheath to change its curvature and orientation, enabling it to reach multiple deep surgical sites and adapt to complex anatomical shapes while maintaining a relatively simple overall structure
Solution Approach 2:
The working sheath is segmented into multiple sections including a straight section, a bendable section with multiple bending units, and a working end section. This segmentation allows different parts of the sheath to perform different functions - the straight section provides structural support, the bendable section provides adaptability, and the working end performs surgical operations
2Adaptability or versatility
If a fixed shield is used, then the device structure is simple, but it is difficult to adapt to different surgical situations with different requirements for shield direction and configuration
Solution Approach 1:
The shield is designed as a movable component that can be adjusted relative to the working end of the sheath. The shield includes a movable connection structure that allows it to be positioned at different angles and orientations according to surgical requirements, providing adaptability to different surgical situations while maintaining a simple basic structure
3Reliability
If the distal end of the apparatus has a larger diameter, then the tissue removal head can be better protected, but it is difficult to navigate through tiny working channels in minimally invasive surgery
Solution Approach 1:
The protective structure is segmented into a shield component and a protective cover component. The shield provides lateral protection while the protective cover extends to provide distal protection. This segmentation allows protection functionality to be distributed across multiple smaller components that can navigate through tiny working channels while still providing comprehensive protection of surrounding tissues
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 flexible and precise tissue removal with reduced surgical risks by allowing the tissue removal head to bend and adjust according to surgical needs, protecting unnecessary tissues, and reducing the size of the apparatus for easier navigation through minimally invasive channels.
Implementation Method 1
the fixed bending part is made of elastic material
Data Source
Figure 1
Figure 2A~2B
Figure 3A~3B
AI summary
An adjustable and bendable tissue removal apparatus comprises a tissue removal head (1), an adjustable and bendable unit (11), a rotation shaft (12), and a straight adjusting tube (31). The adjustable and bendable unit (11) comprises a fixed bending part (13) at a distal end, and the fixed bending part (13) is made of elastic material. The rotation shaft (12) is arranged in the adjustable and bendable unit (11), and has a distal end connected to the tissue removal head (1). The straight adjustment tube (31) is sleeved outside the adjustable and bendable unit (11). The adjustable and bendable tissue removal apparatus further comprises a protection device, and the protection device comprises a protective cover (22), a protection control member (23), and a control handle (36). The protective cover (22) is arc sheet-shaped. The protective cover (22) is connected to a distal end of the protection control component (23), and the distal end of the protection control component (23) is flexible and has a ring-shaped structure. The protective cover (22) can be moved axially or rotated by operating the control handle (36). A distance between an inner wall of the protective cover (22) and an axis of the tissue removal head (1) is greater than a radius of the tissue removal head (1). An angle of the tissue removal head (1) is adjustable. The tissue removal head (1) has superior adaptability, and a side thereof is provided with the protective cover (22), thus preventing removal of tissues unnecessary to be removed by adjusting a position of the protective cover (22) relative to the tissue removal head (1).