Modular Blade Assembly for Detachable Tissue Removal
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Solution Overview
Problem
Conventional tissue removal devices face limitations in flexibility and precision, particularly in accessing remote surgical sites with restricted space and complex geometry, and often have inefficient configuration processes for disposable blade assemblies, leading to increased complexity and cost.
Innovation Solution
A detachable handheld tissue removal device with a modular blade assembly and advanced coupling assembly that allows for adjustable rotation and orientation of the resection member, featuring a rotatable blade assembly that can be securely locked at various angles, driven by a motor for precise tissue removal, and includes irrigation and suction mechanisms for efficient tissue extraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a rotary debrider with small dimensions is used to improve cutting precision and avoid removing unintended tissue, then manufacturing precision and device complexity increase
Solution Approach 1:
The device is divided into separate modular components: a reusable handpiece containing the motor and control mechanisms, and a disposable blade assembly containing the resection member. This segmentation allows the complex motorized components to be manufactured once with high precision, while the disposable blade assemblies can be simpler in design and manufactured more economically.
Solution Approach 2:
The blade assembly is designed as a disposable component that is discarded after a single use or limited number of uses. This eliminates the need for complex sterilization and maintenance systems, reducing overall device complexity while maintaining high cutting precision in the reusable handpiece.
2Adaptability or versatility
If a detachable blade assembly with adjustable rotation is implemented to improve flexibility in restricted surgical spaces, then device complexity increases
Solution Approach 1:
The blade assembly incorporates a rotatable design that can be adjusted to different angular positions relative to the handpiece. This dynamic adjustment capability allows the surgeon to optimize the cutting angle for various surgical configurations and restricted access sites, improving flexibility without requiring multiple separate devices.
Solution Approach 2:
The blade assembly is pre-configured with a coupling mechanism that includes a locking feature, allowing it to be quickly attached and secured to the handpiece at the desired angle before the surgical procedure begins. This preliminary configuration reduces setup time and complexity during the actual surgery.
3Manufacturing precision
If a locking mechanism is added to secure the rotating angle of the blade assembly to improve precision, then ease of operation decreases
Solution Approach 1:
The coupling assembly incorporates an automatic locking mechanism that engages the blade assembly at predetermined angular positions relative to the handpiece. When the blade assembly is inserted, the locking feature automatically snaps into place, securing the rotating angle without requiring additional manual adjustment or complex locking procedures by the surgeon.
Data Source
AI summary
A tissue removal device, and methods of using the same, are described. An exemplary detachable, handheld tissue removal device comprises a hand piece and a blade assembly removably attachable to the hand piece. The blade assembly includes a rotatable resection member driven to rotate and surgically remove tissue from a target tissue site, and a coupling assembly including a locking member to detachably couple the blade assembly to the hand piece and operatively enable or disable the rotation of the blade assembly relative to the hand piece. The rotation of the blade assembly causes a change in rotating angle of the blade assembly. The coupling assembly can secure the rotating angle of the blade assembly during the tissue resection procedure.