Knotless Lateral Row Anchor With Pre-Tensioned Suture Loop
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current suture anchoring systems in surgical procedures, such as rotator cuff repairs, face challenges in securing sutures effectively within bone bores before implanting the anchor, often requiring knots that can complicate the process and affect suture tension.
Innovation Solution
An anchoring system comprising an anchor with a distal member and an implant delivery device, where the inner shaft extends beyond the anchor body to engage and tension the suture within the suture receiving aperture before the anchor is implanted, allowing for proper suture placement and tensioning within the bore, utilizing a fork or slot design to secure the suture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a suture anchor is used to secure bone and tissue during surgical repair, then the tissue can be held in place, but knots are required to secure the suture which complicates the surgical process and affects suture tension control
Solution Approach 1:
The invention extracts the knot-tying function from the surgical process by providing a pre-formed loop structure on the suture that engages with the anchor. The loop is pre-configured during manufacturing, eliminating the need for surgeons to tie knots during the procedure. This reduces surgical complexity while maintaining secure suture anchoring through the interaction between the loop and anchor geometry.
Solution Approach 2:
The suture is pre-configured with a loop structure during manufacturing before the surgical procedure. This preliminary formation of the loop eliminates the need for intraoperative knot tying, allowing the surgeon to simply insert the suture into the anchor. The tensioning mechanism is also pre-designed into the anchor-suture interface, enabling controlled tensioning without complex surgical maneuvers.
2Reliability
If knots are used to secure the suture in current anchoring systems, then the suture can be anchored, but the knotting process complicates the surgical procedure and makes it harder to achieve proper suture tension
Solution Approach 1:
The invention removes the knot-tying step from the surgical process by providing a pre-formed loop on the suture that mechanically engages with the anchor. The loop structure is created during manufacturing, allowing the surgeon to simply insert the suture into the anchor without performing complex knotting maneuvers. This extraction of the knotting function simplifies the surgical procedure while maintaining reliable suture anchoring.
Solution Approach 2:
The loop structure on the suture acts as an intermediary element between the suture and the anchor. Instead of requiring direct knot formation, the loop serves as a mechanical mediator that engages with the anchor's receiving structure. This intermediary loop simplifies the interaction between suture and anchor, making the procedure easier to perform while ensuring reliable anchoring and controlled tensioning.
3Ease of operation
If the inner shaft is extended through the anchor body to engage the suture, then the suture can be tensioned before implantation, but the device structure becomes more complex
Solution Approach 1:
The delivery device employs a nested structure where the inner shaft is received within the outer shaft. The inner shaft can be extended through the anchor body to engage and tension the suture, then retracted back into the outer shaft. This nesting arrangement allows the complex tensioning function to be integrated into a compact delivery device that can be easily manipulated during surgery. The nested design enables the sophisticated inner shaft mechanism to be stored within the simpler outer shaft structure when not in use.
Data Source
AI summary
An anchoring system includes an anchor including an anchor body and a distal member located at a distal end of the anchor body, the distal member having a suture receiving aperture; and an implant delivery device, comprising: a cannulated outer shaft, the cannulated outer shaft configured to engage a proximal end of the anchor body for driving the anchor into a bore; and an inner shaft slidably received in the cannulated outer shaft, wherein a distal end of the inner shaft is extendable distally beyond a distal end section of the cannulated outer shaft such that, when the cannulated outer shaft is engaging the proximal end of the anchor body, the distal end of the inner shaft is extendable through the anchor body to a distance beyond the distal end of the anchor body to engage a suture located within the suture receiving aperture, wherein the anchoring system is configured such that the suture can be tensioned at a location within the bore distal from the anchor body before the anchor body is implanted within the bore.