Tissue Closure Device with Angled Guide Holes
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Solution Overview
Problem
Current methods for closing percutaneous openings, such as those used in laparoscopy or gastropexy, are inefficient and require significant time and immobilization for patients, with manual pressure methods taking up to half an hour and suturing techniques being skill-dependent and prone to variability and risk of damage to underlying structures.
Innovation Solution
A medical device with a tubular main body and flange featuring angled guide holes to facilitate the passage of suturing instruments, allowing for precise placement and visualization of sutures, enabling faster and more controlled closure of tissue openings with reduced risk of damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual pressure is used to close the opening, then the closure method is simple and does not require suturing skill, but it takes half an hour or more and requires patient immobilization
Solution Approach 1:
The device performs preliminary action by providing a pre-formed puncture closure structure that is ready for immediate use. The catheter assembly includes a puncture closure member that is pre-positioned to seal the puncture site, eliminating the need for time-consuming manual pressure application or complex suturing procedures while maintaining operational simplicity.
2Loss of time
If suturing is used to close the opening, then the closure can be done faster than manual pressure, but it requires additional skill and practice and may cause damage to underlying structures
Solution Approach 1:
The device enables self-service closure by incorporating a puncture closure member that automatically seals the puncture site without requiring skilled suturing techniques. The closure member is integrated into the catheter assembly and performs the sealing function autonomously, eliminating the need for physician skill and practice while avoiding damage to underlying structures.
Solution Approach 2:
The device uses an intermediary approach by introducing a specialized puncture closure member as a mediator between the puncture site and the closure process. This closure member acts as an intermediate sealing element that simplifies the closure mechanism, reducing skill requirements and minimizing the risk of damage to underlying structures while maintaining effective closure.
3Device complexity
If purse-string suturing is used to close vascular access sites, then the closure can be achieved with a single thread, but it requires a good deal of skill and practice and is difficult to perform in key-hole procedures
Solution Approach 1:
The device applies segmentation by dividing the closure function into separate components: the catheter assembly provides the puncture closure member while the suturing instrument provides the suture thread. This segmentation allows the closure member to be pre-positioned and simplified, reducing the skill and access requirements compared to traditional purse-string suturing while maintaining effective closure.
Data Source
AI summary
The present invention provides devices for safely closing an opening in tissue using suture. In one embodiment, the device includes an elongated main body constructed to permit visualization longitudinally through the main body from the proximal end to the distal end, the distal end defining a support surface to support the suture and protect distal body structures. A flange is connect to the main body adjacent the proximal end and projects laterally therefrom in first and second lateral directions. First and second guide holes extend longitudinally through the flange, and are structured to direct a suturing instrument longitudinally towards the support surface for passing the suture.