Oval Anchor Suture Delivery for Abdominal Wall Closure
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Solution Overview
Problem
Current methods for trocar port site closure in laparoscopic procedures, particularly in obese patients, face challenges in accessing the fascia layer and securing sutures, leading to complications such as hernias, bowel strictures, and bleeding, due to difficulties in managing and anchoring sutures during surgical procedures.
Innovation Solution
A suture delivery system that includes bioabsorbable anchors and drivers to facilitate the deployment of sutures through the abdominal wall, utilizing oval-shaped anchors and flexible drivers to minimize rotation and ensure secure anchoring, with options for magnetic retrieval and bioabsorbable materials for tissue integration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional suture methods are used for trocar port site closure, then the surgeon can achieve wound closure, but it becomes difficult to access the fascia layer and securely place sutures in obese patients, requiring wound incision and increasing surgical complexity
Solution Approach 1:
The suture delivery system is divided into separate functional components: a delivery device that penetrates the fascia layer, an anchor that secures to the fascia, and a suture that connects the anchor to the skin surface. This segmentation allows each component to be optimized for its specific function, enabling minimally invasive delivery without requiring wound incision even in obese patients
Solution Approach 2:
The anchor acts as an intermediary element between the delivery device and the suture. The delivery device places the anchor on the fascia layer, which then serves as the attachment point for the suture. This intermediary enables secure fascial closure through a minimally invasive approach, avoiding the need for direct suture placement through open wound incision
2Reliability
If adequate port site closure is not achieved, then surgical workflow is simpler, but the patient is subject to serious complications including hernia, bowel stricture, and bleeding
Solution Approach 1:
The system performs preliminary action by placing the anchor on the fascia layer before completing the suture closure. This ensures that the fascial layer is securely captured and positioned before the skin is closed, preventing hernia and bowel stricture complications while maintaining efficient surgical workflow
Solution Approach 2:
The anchor design incorporates specific geometric parameters (oval shape with flattened side) that change how the anchor interacts with the fascia layer. The flattened side provides a stable interface that prevents rotation and ensures reliable fascial attachment, thereby improving closure reliability and preventing complications without adding surgical complexity
3Strength
If suture stays are used for Hasson trocar olive fixation, then anchoring is achieved, but the suture stays become difficult to manage and tangled when removing or adjusting the trocar
Solution Approach 1:
The delivery device is extracted from the system after placing the anchor, leaving only the anchor and suture in place. This separation allows the suture to be easily managed and adjusted without the complexity of managing suture stays through the trocar, eliminating tangling issues during trocar removal or adjustment
Solution Approach 2:
Instead of managing suture stays that pass through the trocar (which causes tangling), the system inverts the approach by placing the anchor on the fascia layer and routing the suture externally. This reversal of the traditional approach simplifies suture management and eliminates the tangling problem associated with internal suture stays
Data Source
AI summary
A suture delivery system is described. The system includes an anchor and a cooperating driver, the driver facilitating a delivery of the anchor into the abdominal cavity. The system allows for the deployment of a suture internally into an abdominal wall.