Knotless Suture Device with Pre-Formed Anchoring Loops
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Solution Overview
Problem
Minimally invasive surgical procedures face challenges in approximating tissue using surgical needles and sutures, particularly in securing the suture without tying knots, which is time-consuming and difficult even with specially designed instruments.
Innovation Solution
A novel suture device with a suture strand featuring spaced apart knots to create suture loops and an anchor member, allowing for tissue approximation without the need for surgical knots, using monofilament or braided sutures with various coatings and biocompatible materials, and mounted to surgical needles for easy maneuverability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional surgical needles and sutures are used with knot-tying, then secure tissue approximation is achieved, but the procedure becomes time-consuming and difficult in minimally invasive settings
Solution Approach 1:
The suture device incorporates pre-formed knots at predetermined intervals along the suture strand before the surgical procedure begins. These knots are created during manufacturing, eliminating the need for surgeons to tie knots during the procedure. The pre-configured knots are positioned to automatically engage with tissue or anchor members upon deployment, providing immediate secure approximation without requiring time-consuming knot-tying operations during surgery.
Solution Approach 2:
The suture device is designed to self-secure through its pre-formed knots that automatically engage with tissue or anchor members when deployed. The knots are configured to lock into place through their own structural design, requiring no additional knot-tying actions by the surgeon. The device performs its own securing function through the mechanical engagement of the pre-formed knot structures with the tissue pathway or anchor members.
2Ease of operation
If specially designed endoscopic suture instruments are used, then tissue approximation is possible through cannulas, but the knotting process remains especially challenging and time-consuming
Solution Approach 1:
The invention extracts the knot-tying function from the surgical procedure and relocates it to the manufacturing stage. By pre-forming knots during suture production, the complex knotting operation is removed from the surgical field, eliminating the need for specialized endoscopic knotting instruments. The surgeon only needs to deploy the pre-configured suture device through standard cannulas, significantly simplifying the procedural complexity.
3Reliability
If multiple passes of needle and suture through tissue are made, then complete tissue approximation is achieved, but the need for subsequent knot-tying remains critical and time-consuming
Solution Approach 1:
The suture device incorporates pre-formed knots at predetermined intervals along the suture strand before the surgical procedure begins. These knots are created during manufacturing, eliminating the need for surgeons to tie knots during the procedure. The pre-configured knots are positioned to automatically engage with tissue or anchor members upon deployment, providing immediate secure approximation without requiring time-consuming knot-tying operations after the multiple tissue passes are completed.
Data Source
AI summary
A knotted suture device is disclosed. The device may have a surgical needle attached to one or both ends of the suture. The device has a plurality of loops formed by knots. An anchor member is attached to the device. The device when used in a surgical procedure can be secured without the need to tie a knot.