Multi-Needle Suturing Device with Adjustable Suture Hook
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Solution Overview
Problem
Conventional suturing devices using metal staples can cause pain if staples dislodge and lack adjustable fastening strength, while traditional needle-and-suture methods are time-consuming and require skilled technique for wide cuts.
Innovation Solution
A suturing device with first and second holding members, multiple needles, and a needle moving mechanism that allows for rapid penetration and secure knot formation using a suture hook, enabling adjustable stitch placement and strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If metal staples are used for suturing, then a wide area can be closed at once, but the staples may dislodge causing pain and lack adjustable fastening strength
Solution Approach 1:
The patent changes the fastening mechanism from fixed metal staples to adjustable sutures with variable knot configurations. The suture system allows modification of fastening strength through different knot types and tightening degrees, enabling adaptation to various tissue types and surgical requirements while maintaining secure closure.
Solution Approach 2:
The patent employs disposable suture materials that are designed for single-use surgical procedures. These sutures eliminate the risk of staple dislodgement and infection associated with metal staples, providing reliable and secure closure without the long-term retention issues of permanent staples.
2Adaptability or versatility
If traditional needle and suture method is used, then flexible adjustment is possible, but stitches must be placed one by one taking relatively long time
Solution Approach 1:
The patent segments the suture delivery system into multiple independent needle units arranged in arrays. Each needle can be advanced independently or simultaneously to create multiple stitches in rapid succession, combining the flexibility of individual stitch placement with the speed of multi-point closure.
Solution Approach 2:
The patent employs periodic reciprocating motion of the needle assembly to advance multiple needles through tissue in a rhythmic sequence. This periodic action allows systematic placement of multiple stitches along the cut edge, maintaining flexibility while significantly increasing suturing speed compared to manual single-stitch placement.
3Productivity
If multiple needles are used to penetrate edges, then rapid suturing is enabled, but precise control of needle movement and suture tension is required
Solution Approach 1:
The patent merges multiple needle units into a single integrated assembly that moves as one unit. This combined structure allows simultaneous advancement of all needles through the tissue, simplifying the control mechanism while achieving rapid multi-point penetration and suture placement.
Solution Approach 2:
The patent introduces a suture carrier or hub as an intermediary component that holds multiple needles and coordinates their movement. This mediator distributes the driving force uniformly to all needles and maintains proper spacing and alignment, reducing the complexity of direct needle control while enabling synchronized rapid deployment.
Data Source
AI summary
A suturing device includes first and second holding members, a plurality of needles, a needle moving mechanism, and a suture hook. The first and second holding members are configured to move toward and away from each other to sandwich therebetween edges of a cut. The needles are disposed at the first holding member and aligned in a needle arrangement direction with their points pointing to the second holding member. The needles are configured to hold a suture at tips thereof. The needle moving mechanism is configured to move the plurality of needles toward the second holding member. The suture hook is disposed at the second holding member and configured to move along the needle arrangement direction to catch the suture that has reached the second holding member via the edges of the cut by movement of the needles toward the second holding member by the needle moving mechanism.