Medical Suture Tool with Dual Needles and Linear Grasping
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Solution Overview
Problem
Conventional suture tools face difficulties in penetrating due to curved needle tips and have complex operations for tying sutures and engaging loops, making them hard to handle and less safe.
Innovation Solution
A suture tool with a first puncture needle for insertion, a second puncture needle for retrieval, a linear grasping member, and an anchor member to prevent suture dragging, allowing for easier penetration and secure suture engagement and anchoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a curved tip end is used on the puncture needle, then the loop body can be projected horizontally to grasp the suture, but the puncture needle becomes difficult to penetrate
Solution Approach 1:
The puncture needle is divided into two separate components: a first puncture needle for insertion and a second puncture needle for retrieval. The first needle has a straight tip for reliable penetration, while the second needle accommodates the grasping member for suture retrieval, separating the conflicting functions of penetration and grasping.
Solution Approach 2:
A linear grasping member is introduced as an intermediary component between the puncture needles and the suture. This grasping member with its linear shape and engagement structure facilitates suture grasping without requiring the puncture needle tip to be curved, thus maintaining penetration capability while achieving grasping function.
2Ease of operation
If the suture is passed through a small loop body, then the suture can be grasped, but the operation becomes complicated
Solution Approach 1:
Instead of passing the suture through a small loop body as in conventional designs, the invention inverts the approach by using a linear grasping member that engages with the suture in a linear fashion. This reversal of the engagement geometry simplifies the operational steps while achieving the same grasping objective.
Solution Approach 2:
The linear grasping member serves as an intermediary that simplifies the interaction between the puncture needle and the suture. Its linear structure with engagement features provides a straightforward mechanism for grasping the suture without the complexity of threading through small loops.
3Reliability
If the suture is tied up externally after removing puncture needles, then the suture can be secured, but the operation becomes complicated and time-consuming
Solution Approach 1:
The grasping member is preliminarily positioned and engaged with the suture through the second puncture needle before the needles are removed. This preliminary engagement prepares the suture for securement, allowing the anchoring member to be attached more efficiently after needle removal, thus reducing the overall time and complexity of the suture securing process.
Solution Approach 2:
The linear grasping member acts as an intermediary that maintains suture engagement throughout the needle removal process. This continuous engagement mechanism simplifies the subsequent anchoring operation compared to conventional methods where the suture must be manually manipulated and tied after needle removal.
Data Source
AI summary
A suture tool for fixing the gastric wall to the abdominal wall includes a first puncture needle for insertion, a suture thread, a second puncture needle for removing the suture thread, a linear grasping member and one or more anchor member. The tip end portion of the suture thread is inserted into the first puncture needle and a hook of the linear grasping member is inserted into the second puncture needle for removing the suture thread inserted into the first puncture needle for securing the gastric wall to the abdominal wall.