Suture Passer Single Trigger Mechanism
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Solution Overview
Problem
Minimally invasive surgical procedures face challenges in suturing internal tissues due to limited access, requiring complex instrument manipulation and multiple steps, which increases surgery duration and tissue trauma.
Innovation Solution
A surgical suture passer device that allows passing and grasping of sutures through tissue using a single cannula, with a single trigger mechanism to move the needle and capture the suture, reducing the number of steps and instruments needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional suturing methods are used in minimally invasive procedures, then access to suturing area is limited, but instrument manipulation becomes complex and requires multiple access points
Solution Approach 1:
The patent combines multiple functions (suture passing, tissue grasping, needle deployment) into a single integrated device that can be inserted through one access point. The device integrates a needle, jaws for tissue grasping, and a suture retrieval mechanism all within one instrument, eliminating the need for multiple separate instruments and access points.
Solution Approach 2:
The device performs multiple functions through a single instrument: it can grasp tissue, pass a needle through the tissue, deliver suture material, and retrieve the suture. This multi-functional approach reduces the number of separate instruments needed and simplifies the overall procedural complexity.
2Reliability
If multiple instruments and steps are used to pass suture through tissue, then suture passing reliability improves, but surgery duration increases
Solution Approach 1:
The device is pre-loaded with a needle and suture material before insertion. The needle is positioned within the device housing, and the suture is pre-attached to the needle. This preliminary preparation eliminates the need for time-consuming assembly steps during the surgical procedure while maintaining reliable suture passing capability.
Solution Approach 2:
The device enables continuous action by allowing the surgeon to grasp tissue, pass the needle, and retrieve the suture in a single uninterrupted motion through one access point. The integrated design eliminates the need to withdraw and reposition multiple instruments, maintaining continuous useful action throughout the suture passing process.
3Ease of operation
If multiple access cannulas are used, then suture manipulation control improves, but tissue trauma increases
Solution Approach 1:
The patent merges multiple functions (suture passing, tissue grasping, needle deployment) into a single integrated device that can be inserted through one access point. The device integrates a needle, jaws for tissue grasping, and a suture retrieval mechanism all within one instrument, eliminating the need for multiple separate instruments and access points.
Data Source
Figure 1
Figure 2A~2B
Figure 3A~3C
AI summary
An endoscopic surgical instrument for passing a suture through tissue includes a first jaw member, a needle, and a capture feature actuable to grip and retain the suture after the suture has been passed through a tissue body. An actuation mechanism can both move the needle between retracted and extended positions, and move the capture feature between open and closed configurations, via a single actuation. The capture feature may be a trap door which is axially translatable relative to the first jaw member to overlap a portion of the first jaw member and trap a portion of the suture between the trap door and the overlapped portion. The first jaw member may be movable relative to a second jaw member to grasp a tissue body. The instrument can grasp a tissue body, pass the suture through the tissue, capture and retain the suture without being repositioned relative to the tissue.