Linear Tissue Clipping Assembly for Parallel Defect Closure
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Solution Overview
Problem
Conventional tissue recruitment and hemostatic devices are difficult to properly position and operate when accessing target tissue from a non-perpendicular approach, leading to inefficiencies in tissue recruitment and closure.
Innovation Solution
A linear tissue clipping device with a distal and proximal arm assembly, actuated by a drive element, allows for tissue clipping in a parallel approach, enabling effective closure of defects and lesions in hard-to-reach locations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional tissue recruitment devices are operated from a perpendicular approach, then the device structure is simple, but the device cannot access target tissue at difficult or impossible locations
Solution Approach 1:
The patent transitions from perpendicular (vertical) tissue recruitment to parallel (horizontal) tissue recruitment by reorienting the clipping arms to move along the longitudinal axis of the catheter rather than radially outward. This dimensional change enables access to previously unreachable tissue locations while maintaining device functionality.
Solution Approach 2:
The distal arm is designed with extending and retracting capabilities, allowing it to dynamically adjust its length and position during the procedure. This dynamic structure enables the arm to reach tissue at various depths and angles, improving adaptability to different anatomical configurations.
2Productivity
If conventional hemostatic devices are used to close tissue defects, then multiple devices are required for large defects, but this increases the time and complexity of the procedure
Solution Approach 1:
The patent combines tissue recruitment and hemostatic closure functions into a single integrated device. The same distal and proximal arms that recruit tissue also perform the clipping and closure, eliminating the need for separate devices and reducing procedural steps.
Solution Approach 2:
The clipping arms are designed to perform multiple functions: tissue grasping, recruitment, approximation, and hemostatic closure. This multi-functionality allows a single device to handle the entire process from tissue access to defect closure, improving productivity and reducing procedural time.
3Reliability
If conventional clamps and clips are applied around recruited tissue, then hemostasis can be achieved, but the procedure requires precise positioning from above which is difficult at certain sites
Solution Approach 1:
Instead of applying clips from above (perpendicular approach), the patent inverts the approach by applying clips from the side (parallel approach) using arms that extend along the catheter axis. This inversion makes the procedure easier to perform at difficult anatomical sites while maintaining closure effectiveness.
Solution Approach 2:
The distal arm acts as an intermediary mechanism that transfers the clipping force from the drive assembly to the tissue. This intermediary structure enables precise force application at the target site while allowing the operator to control the device from a more accessible position.
Data Source
AI summary
A tissue clipping device for clipping tissue and methods of using the same. The device includes a tissue clipping assembly for clipping tissue and a drive assembly operable to control the operation of the tissue clipping assembly. The tissue clipping assembly includes a distal arm that is linearly extendable and retractable to clip tissue. The tissue clipping assembly may be decoupled from the drive assembly after tissue is clipped. Additional clipping assemblies may be deployed with the drive assembly to close larger defects.