Pivotable Jaw Linkage for Tissue Grasping Strength
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional hemostatic devices and clips used for gastrointestinal bleeding and tissue closure are not strong enough for permanent hemostasis and face challenges with difficult placement and limited tissue grasping capacity, leading to incomplete closure.
Innovation Solution
A medical device with a housing, jaws, and links that are slidably and pivotally connected, allowing for longitudinal movement and rotation to engage tissue effectively, along with a driver mechanism for precise control of jaw positions and tissue grasping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional clips are used for hemostasis and tissue closure, then the procedure is less invasive, but the clips are not strong enough to cause permanent hemostasis and have limited tissue grasping capacity
Solution Approach 1:
The jaws are designed to be rotatable relative to the longitudinal axis, allowing dynamic adjustment of jaw orientation to match the tissue geometry. This rotational capability enables the jaws to adapt to different tissue configurations while maintaining strong grasping force, resolving the contradiction between strength and adaptability.
Solution Approach 2:
The device is divided into modular components including the housing, rotatable jaw assembly, and driver mechanism. This segmentation allows each component to be optimized independently for its specific function while maintaining overall device effectiveness, addressing the complexity concern.
2Ease of operation
If traditional clips are used for tissue closure, then the device is simpler, but placement is difficult and tissue grasping capability is limited
Solution Approach 1:
The rotatable jaw mechanism allows the device to adapt to various tissue orientations and geometries during placement. By enabling the jaws to rotate to the optimal orientation, the device becomes easier to place correctly while maintaining high adaptability to different tissue types and configurations.
Solution Approach 2:
The device changes the orientation parameter of the jaws through rotation, allowing adaptation to different tissue configurations. This parameter adjustment simplifies placement by enabling the operator to align the jaws with the tissue geometry rather than requiring precise initial positioning.
3Strength
If conventional hemostatic devices are used, then the device structure is simpler, but they cannot provide strong enough force for permanent hemostasis
Solution Approach 1:
The rotatable jaw mechanism enables dynamic application of grasping force, allowing the jaws to rotate into optimal positions for maximizing tissue compression and hemostatic effect. This dynamic capability enhances the hemostatic force delivered while maintaining a relatively simple overall device structure.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
Medical systems, devices and methods are provided for engaging tissue, e.g. for clipping tissue, closing a perforation or performing hemostasis. Generally, the medical system including a housing, first and second jaws rotatable relative to the housing, first and second links pivotally attached to the jaws, and a driver. The housing, first and second jaws, and first and second links form a linkage mechanism that allows the jaws to engage tissue and be left in vivo.