Suture Anchor Delivery Device with Toggle Mechanism
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Solution Overview
Problem
Existing suture anchor delivery systems require the use of knots, knot pushers, and retraction lines for implantation and tightening, which are complex and limit the flexibility of independent and prioritized deployment of suture anchors in soft tissue repair.
Innovation Solution
A delivery device with a control mechanism that ensures prioritized deployment of two suture anchors, allowing independent and flexible deployment with a toggle mechanism for fixing driver positions, eliminating the need for knots and retraction lines by using a housing with driver mechanisms and calibration marks for precise implantation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If knots and retraction lines are used for suture anchor deployment, then the suture anchors can be secured and tightened, but the procedure becomes complex and time-consuming
Solution Approach 1:
The patent removes knots and retraction lines from the suture anchor deployment system. Instead of using traditional knot-tying mechanisms, the invention employs a delivery device with driver mechanisms that directly implant and secure the suture anchors through mechanical action, eliminating the need for separate knot-tying steps and retraction lines.
Solution Approach 2:
The suture anchors are designed with self-securing features that allow them to be deployed and fixed automatically by the driver mechanism without requiring separate knot-tying actions. The anchors self-lock or self-secure upon deployment, making the system self-sufficient and eliminating the need for additional components like knots and retraction lines.
2Device complexity
If a single needle and pusher mechanism is used for delivering suture anchors, then the device structure is simple, but the surgeon has little freedom for individually deploying anchors and making adjustments
Solution Approach 1:
The delivery device is segmented into multiple independent driver mechanisms, each capable of independently deploying a suture anchor. This segmentation allows the surgeon to control each anchor's deployment separately, providing flexibility to make adjustments to individual anchors without affecting others, while maintaining a relatively simple overall device structure.
Solution Approach 2:
The driver mechanisms are designed to be movable and adjustable during the deployment process. The surgeon can dynamically control the position and action of each driver mechanism, allowing for real-time adjustments and individual deployment control, transforming a static single-mechanism system into a dynamic multi-mechanism system.
3Adaptability or versatility
If pusher mechanisms extend from opposing surfaces of the device body, then independent delivery of anchors is enabled, but the device structure becomes more complex and less rigid
Solution Approach 1:
Multiple driver mechanisms are merged into a single integrated device body structure rather than extending from opposing surfaces. This consolidation reduces the overall device complexity while maintaining the capability for independent anchor delivery. The drivers are arranged in a coordinated manner within the device body, providing structural rigidity while enabling individual control.
4Adaptability or versatility
If the delivery needle position is not fixed, then flexibility in needle positioning is achieved, but the surgeon lacks rigid fixation control during deployment
Solution Approach 1:
The delivery needle position is designed to be dynamically adjustable during the procedure. The needle can be positioned and repositioned freely to achieve optimal placement, and then fixed in place when needed. This dynamic design provides both the flexibility for initial positioning and the reliability for secure fixation during the deployment process.
Data Source
Figure 1
Figure 2A~2B
Figure 3A~3B
AI summary
A suture holder delivery system (300) including a housing (310) having a distal end and a proximal end, a first driver mechanism (312) and a second driver mechanism (314), each movable in a longitudinal direction with respect to the housing, a first delivery needle (332) and a second delivery needle (334), the first delivery needle connected at a proximal end to the first driver mechanism and the second delivery needle connected at a proximal end to the second driver mechanism, the first driver mechanism and said second driver mechanism each having fully retracted and fully extended positions and a toggle assembly (366) operable to fix at least one of the first driver mechanism and second driver mechanism in at least one longitudinal position. The delivery system may alternatively or additionally include a locking mechanism operable to prevent the second driver mechanism from being moved in a distal direction until the first driver mechanism is longitudinally advanced to the extended position.