Detachable Pivotable Jaws for Permanent Hemostasis
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Solution Overview
Problem
Conventional hemostatic devices and clips are not strong enough to achieve permanent hemostasis and often face difficulties in placement and tissue grasping, leading to incomplete closure in gastrointestinal applications, particularly in gastrointestinal bleeding and perforations.
Innovation Solution
A medical device with pivotally connected jaws and a driver system that allows for longitudinal movement and rotation of the jaws to engage and clamp tissue, featuring a locking mechanism for secure attachment and detachment from a drive wire, enabling effective tissue engagement and clamping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional clips are used for hemostasis, then the procedure is simple, but the clips are not strong enough to achieve permanent hemostasis
Solution Approach 1:
The clip is divided into two separate jaws (first jaw and second jaw) that can be independently positioned and applied to tissue. This segmentation allows each jaw to be optimally shaped and sized for specific tissue types, improving overall gripping strength and hemostatic reliability compared to conventional single-clip designs
Solution Approach 2:
The jaws are designed to be movable relative to each other, transitioning from a closed configuration during delivery to an open configuration for tissue engagement. This dynamic capability allows the jaws to adapt to different tissue sizes and shapes, enhancing both strength and reliability of hemostasis
2Adaptability or versatility
If traditional clips are used for closing perforations, then the application is attempted, but the placement is difficult and tissue grasping capability is limited
Solution Approach 1:
The jaws transition from a closed delivery configuration to an open tissue-engaging configuration, allowing easy passage through the endoscope while providing enhanced tissue grasping capability upon deployment. This dynamic transformation simplifies placement while improving adaptability
Solution Approach 2:
The jaws are positioned laterally relative to the endoscope axis, extending outward to engage tissue on opposite sides of a perforation. This lateral dimensionality allows simultaneous grasping of tissue edges that would be difficult to achieve with conventional axial clip placement
3Adaptability or versatility
If conventional clips are used, then the device structure is simple, but the capability to grasp limited amount of tissue results in incomplete closure
Solution Approach 1:
By dividing the clipping function into two separate jaws, the device can grasp larger amounts of tissue and achieve complete closure of perforations. The segmented structure, while more complex than conventional clips, provides proportional improvement in tissue grasping capability
Solution Approach 2:
The dual-jaw design serves multiple functions: it can grasp tissue of varying sizes, close perforations of different dimensions, and adapt to various tissue types. This multi-functionality justifies the increased structural complexity by providing versatile tissue engagement capability
Data Source
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, a driver, and an elongate drive wire. The elongate drive wire may be disconnected from the driver, first and second jaws, and the housing, which are left in vivo engaged with the tissue.