Suture Locking Pin Mechanism for Secure Tissue Cinching
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing methods for tying sutures in medical procedures, particularly when securing tissue to bone, are inefficient as they result in loose knots and inadequate tissue adherence to the bone, especially in arthroscopic and open surgeries.
Innovation Solution
A suture locking device integrated with a modified anchor that uses a pin mechanism to automatically secure the suture by threading it through a hollow cylindrical body with serrated surfaces, allowing the pin to compress and lock the suture in place without the need for manual knotting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual knot tying is used to secure suture to bone, then the procedure can be performed with simple equipment, but the tissue adherence to bone is inadequate and knot consistency is poor
Solution Approach 1:
The suture locking device automatically secures the suture to the anchor without requiring manual knot tying by the surgeon. The pin mechanism self-locks the suture in place through automated compression against the anchor body, eliminating the need for surgical skill in knot tying while ensuring consistent and reliable tissue adherence to bone.
Solution Approach 2:
The patent replaces the manual mechanical knot-tying process with an automated pin compression mechanism. Instead of relying on surgical skill to tie consistent knots, the device uses a controlled mechanical compression system where the pin is forced against the anchor body to secure the suture, providing repeatable and reliable results.
2Manufacturing precision
If manual knot tying is performed, then the surgeon has control over the knot, but the knot is inconsistent and tissue does not cling to bone optimally
Solution Approach 1:
The device performs the knotting function automatically without requiring surgeon intervention in the actual securing process. The pin mechanism self-adjusts and self-locks the suture in place, providing consistent results every time while freeing the surgeon from the complexity of knot tying.
Solution Approach 2:
The suture is pre-threaded through the anchor body apertures before the pin is inserted. This preliminary arrangement ensures that when the pin is compressed into place, the suture is already positioned correctly to be secured, eliminating variability in knot placement and ensuring consistent tissue adherence.
3Reliability
If traditional anchor and suture combination is used, then the structure is simple, but suture slack remains and tissue is not cinched closely to bone
Solution Approach 1:
The suture is threaded through the anchor body apertures in advance, creating a pre-positioned loop that is ready for compression. This preliminary setup ensures that when the pin is inserted and compressed, the suture is already in the correct position to be tightly cinched to the tissue and bone, eliminating slack.
Solution Approach 2:
The pin mechanism provides dynamic compression force that can be controlled during insertion. The pin can be forced into different positions along the anchor body to apply varying degrees of compression, allowing the surgeon to optimize the cinching force to achieve tight tissue adherence without excessive force that could damage the tissue.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution ensures the tissue is securely cinched to the bone, eliminating the need for manual knotting and reducing suture slack, thereby improving the reliability and effectiveness of tissue attachment during surgical procedures.
Implementation Method 1
the pin is moved upwardly to be urged against the wall so as to squeeze the suture reaches between the pin and the wall
Implementation Method 2
The top surface of the recess is contoured into jutting surfaces or serrated and the pin is polygonal shaped where it includes flat surfaces that are oriented parallel to the side walls of the recess
Data Source
AI summary
For suture tying in a medical procedure including the use of an anchor that includes a suture locking device that includes a sliding pin guided by axial side slots formed in the locking device that forces the suture where the two ends thereof are inserted into the interior of the suture locking mechanism to drive the captured suture and pin to fit into a recess on the top of the suture locking mechanism such that the top of the pin binds the suture against the upper inner surface of the recess. The recess can be serrated to enhance the locking capability and the pin is polygonal shaped to provide side surfaces that run parallel to the wall of the recess to assure that the side portion of the pin does not fracture the suture and cause it to weaken. The locking of the suture is automatic upon the deployment of the anchor which actuates the pin into the locking position, thus eliminating the necessity of manually knotting the suture and improving the cinching of the tissue to the bone. The suture locking mechanism is usable for attaching tissue to the bone, tying tissue to tissue and the like. The disclosure also includes the method of deploying the combined anchor and suture locking device in a medical procedure.