Twist Needle Passer Closure Device for Gastrointestinal Tissue
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Solution Overview
Problem
Conventional tissue closure devices are difficult to use and time-consuming, especially for large wounds in the gastrointestinal tract, and may be insufficient for closing certain perforations or treating specific anatomical conditions.
Innovation Solution
A tissue closure device with a needle and suture system that alternates between proximal and distal heads to thread through target tissue, using locking mechanisms to secure the needle in different configurations, allowing for efficient closure of tissue defects by cinching the suture around the tissue perimeter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional tissue closure devices are used, then tissue closure can be achieved, but the procedure is difficult to use and time-consuming
Solution Approach 1:
The device is divided into distinct functional segments including a proximal head with locking mechanism, a needle assembly, and a distal head with tissue engagement features. This segmentation allows each component to perform its specific function efficiently, reducing overall procedural complexity and time
Solution Approach 2:
The needle is pre-loaded into the device housing with the suture attached, and the locking mechanism is pre-configured to secure the needle in place. This preliminary preparation eliminates the need for separate needle insertion and securing steps during the procedure, significantly reducing procedural time and improving ease of use
2Adaptability or versatility
If conventional tissue closure devices are used, then tissue closure can be achieved, but they are insufficient for closing certain perforations or treating specific anatomical conditions
Solution Approach 1:
The device is designed with multiple functional capabilities including needle-based suture delivery, tissue grasping, and adjustable locking mechanisms that can accommodate various tissue types and defect sizes. The distal head can engage different tissue configurations, making the device versatile for treating perforations, leaks, and other anatomical conditions while maintaining reliable closure
Solution Approach 2:
The locking mechanism features dynamic adjustment capabilities allowing the operator to modify the engagement strength and configuration based on tissue characteristics. The distal head includes movable components that adapt to different tissue geometries, enabling the device to reliably close various types of defects including full-thickness perforations and anastomotic leaks
Data Source
AI summary
A tissue closure device includes a needle and a suture extending therefrom, a proximal head including a proximal slot and a proximal locking mechanism for releasably engaging a first end of the needle in the proximal slot in a first configuration, and a distal head movably coupled to the proximal head so that the proximal and distal heads are movable relative to one another between an open configuration, in which a target tissue is received therebetween, and a closed configuration, in which the target tissue gripped therebetween. The distal head includes a distal slot and a distal locking mechanism for releasably engaging a second end of the needle in the distal slot in a second configuration, the needle movable between the first and second configurations by rotating the needle, the needle alternatingly passed between the proximal and distal heads to thread the suture through the target tissue.