Ligature Device Coordinated Puncture Tissue Manipulation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current medical ligature and suture devices for biomedical tissue manipulation during peroral endoscopy lack efficient mechanisms for puncturing and ligating tissue, leading to complex operations and potential errors in forming artificial valves and other tissue modifications.
Innovation Solution
A ligature and suture device with a distal end insertion portion, needle body, pressing member, and ligature tool, featuring a flexible sheath and engaging portion, along with linking devices that interconnect the puncture handle, pressing handle, and ligature tool operation unit, allowing for coordinated movement to simplify the puncturing and ligating process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple separate components (needles, pusher tubes, ligature tools) are used for tissue puncturing and ligating, then the device can perform multiple functions, but the operation complexity increases and the procedure becomes more time-consuming
Solution Approach 1:
The patent combines multiple separate components (needle body, pusher member, holding member, and ligature tool) into an integrated assembly where the needle body houses the pusher member and holding member, and the ligature tool can be positioned relative to the needle body. This integration allows the operator to perform puncturing and ligating operations with a single coordinated action rather than manipulating multiple separate devices, thereby reducing operational complexity while maintaining functional versatility
2Reliability
If multiple separate components are used for tissue puncturing and ligating, then each component can be optimized for its specific function, but the time required to complete the procedure increases
Solution Approach 1:
The holding member is pre-positioned inside the needle body before the puncturing operation begins. The pusher member is also pre-loaded into the needle body with the holding member. This preliminary arrangement means that when the needle punctures the tissue, the holding member is already in position to engage the ligature, eliminating the need for separate steps to position these components after puncturing, thus reducing procedure time while maintaining reliable functional performance
3Device complexity
If a simple needle and ligature tool are used without integrated mechanisms, then the device structure is simpler, but the precision and coordination of the puncturing and ligating operation deteriorates
Solution Approach 1:
The patent employs a nested structure where the pusher member is inserted into the needle body, and the holding member is attached to the pusher member. The ligature tool is positioned relative to this nested assembly. This nested configuration ensures that all components move in a coordinated manner during the puncturing and ligating operation, maintaining operational precision while keeping the overall structure relatively simple and easy to manufacture
Data Source
AI summary
A ligature and suture device for medical application includes a distal end insertion portion, a needle body, a ligature tool, and an operation section. The operation section includes a housing that is provided in a base end portion of the distal end insertion portion, a puncture handle that is provided in the housing so as to be able to move freely backwards and forwards and that drives the needle body, a pressing handle that is provided in the housing so as to be able to move freely backwards and forwards and that drives a pressing member, a ligature tool operation unit that is provided in the housing so as to be able to move freely backwards and forwards and that drives a ligature sheath, and a ligature handle that is provided in the ligature tool operation unit so as to be able to move freely backwards and forwards and that drives an engaging portion.