Tissue Capture Anchor with Expandable Tines
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Solution Overview
Problem
Current medical procedures for attaching soft tissue to bone, such as biceps tenodesis and ACL repair, require multiple complex steps and tools, making them difficult and inefficient, especially arthroscopically.
Innovation Solution
A tissue capture anchor system with an expandable anchor body and displaceable spreader, featuring spikes or tines with teeth for secure engagement with bone, allowing for the attachment of soft tissue without sutures or knots, and an inserter tool for easy deployment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional multi-step surgical procedures are used for attaching soft tissue to bone, then secure attachment can be achieved, but the procedural complexity and number of tools required increases significantly
Solution Approach 1:
The patent combines multiple functions (tissue capture, anchor deployment, and bone engagement) into a single integrated device. The spreader with spikes captures tissue while the anchor body with expandable tines provides secure bone attachment, eliminating the need for separate suturing and anchoring steps.
Solution Approach 2:
The anchor device serves multiple purposes: the spreader captures and holds soft tissue, the anchor body provides structural support, the expandable tines secure the device to bone, and the central hole allows for tissue passage. This multi-functional design replaces multiple specialized tools.
2Reliability
If traditional whip stitching and suture threading methods are used, then tissue attachment is achieved, but the time required and procedural difficulty increase
Solution Approach 1:
The spreader with spikes is designed to capture and pre-position the tissue before the anchor is deployed. This preliminary tissue capture eliminates the need for time-consuming suturing steps during the main procedure.
Solution Approach 2:
The invention extracts and eliminates the need for sutures, knots, and threading operations by using a direct mechanical capture system with spikes and an expandable anchor mechanism that secures tissue through deployment rather than ligation.
3Reliability
If multiple tools and steps are used for anchor insertion and deployment, then secure fixation is achieved, but the ease of operation decreases
Solution Approach 1:
The device combines the insertion tool and deployment mechanism into an integrated system. The spreader and anchor work together as a single unit that can be inserted and deployed in one continuous motion, reducing the need for tool changes and complex manipulation steps.
4Object-affected harmful factors
If conventional tenodesis procedures are performed arthroscopically, then minimally invasive benefits are achieved, but the difficulty and complexity of the procedure increase
Solution Approach 1:
The single anchor device performs multiple functions (tissue capture, anchoring, and fixation) that would traditionally require multiple separate tools and steps, making the arthroscopic procedure more manageable and less complex while maintaining minimally invasive benefits.
Data Source
AI summary
Disclosed herein are methods and devices for securing soft tissue to a rigid material such as bone. A tissue capture anchor is described that includes an anchor body and a spreader such that tissue may be captured or compressed between outside surfaces on the anchor and spreader and inside surfaces of a bone hole to secure the tissue within the hole. A bone anchor is described that includes an anchor body with expandable tines and a spreader that expands the tines into bone. The spreader captures tissue via a suture loop at the distal end of the bone anchor. Also described is an inserter that can be used to insert the anchor into bone and move the spreader within the anchor to expand the anchor and capture the tissue between the anchor and the bone. Methods are described that allow the use of bone anchors to secure tissue to bone.