Trocar System Stabilizing Suture Needle via Segmented Guide Holes
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Solution Overview
Problem
Existing trocar systems for laparoscopic surgery face issues with improper suturing due to the suture needle shaking during closure of the peritoneal hole, which can lead to tearing of the peritoneum.
Innovation Solution
A trocar system with elongated and inclined suture needle guide holes on the suture needle guide member and trocar unit, along with a suture needle guide mechanism that stabilizes the needle, preventing it from shaking and ensuring a wider area of application, thereby preventing the peritoneal hole from being torn.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the suture needle is inserted through a hole-shaped opening part, then the peritoneal hole can be closed, but the focus of the suture needle may be shaken causing improper suturing
Solution Approach 1:
The opening part is divided into multiple through-holes arranged in a specific pattern, allowing the suture needle to pass through multiple discrete points rather than a single hole. This segmentation provides multiple guidance paths for the needle, stabilizing its focus while maintaining the ability to close the peritoneal hole effectively
Solution Approach 2:
The through-holes act as intermediary guidance structures between the external environment and the peritoneal hole. These through-holes provide a stable pathway that mediates the needle's passage, preventing needle focus shaking while enabling proper suturing of the peritoneal defect
2Ease of operation
If the second opening part has a long length in the longitudinal direction, then the trocar can be inserted, but the focus of the suture needle may be shaken
Solution Approach 1:
The longitudinal opening is segmented into multiple through-holes arranged in a pattern, which provides multiple discrete guidance paths. This segmentation maintains ease of trocar insertion while stabilizing needle focus by distributing the guidance function across multiple points rather than a single long opening
Solution Approach 2:
The opening structure transitions from a single long longitudinal opening to multiple through-holes arranged in a two-dimensional pattern. This dimensional change provides guidance in multiple directions simultaneously, stabilizing needle focus while maintaining insertion ease through the distributed hole pattern
3Ease of operation
If the suture needle passes through too close to the peritoneal hole, then suturing can be performed, but the peritoneal hole may be torn
Solution Approach 1:
The multiple through-holes are arranged in a pattern that distributes the needle passage points away from the peritoneal hole center. This segmentation allows the needle to pass through multiple discrete locations while maintaining adequate distance from the peritoneal hole, preventing tearing while enabling effective suturing
Solution Approach 2:
The through-holes are strategically positioned to provide different local guidance characteristics. The arrangement creates zones of varying guidance strength and orientation, allowing the needle to be guided safely away from the peritoneal hole while maintaining operational ease for proper suturing
Data Source
AI summary
Proposed is a trocar system for a laparoscopic surgery, the trocar system preventing improper suturing caused by shaking of the focus of a suturing needle during suturing of the peritoneal hole of the peritoneum after completion of a laparoscopic surgery, and including a suturing needle guide member having first and second suturing needle guide holes, a trocar unit detachably coupled to the suturing needle guide member and having third, fourth, fifth, and sixth suturing needle guide holes, a trocar to which the suturing needle guide member is detachably coupled and which is provided with seventh and eighth suturing needle guide holes, and a suturing needle provided with suturing thread guided through the first, third, fifth, and seventh suturing needle guide holes and second, fourth, sixth, and eighth suturing needle guide holes.