Spring-Loaded Hemostatic Clip for Repeated Catheter Deployment
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Solution Overview
Problem
Conventional mechanical hemostatic devices are not strong enough to achieve permanent hemostasis and are cumbersome to deploy multiple devices in a body cavity, requiring repeated insertion and removal of an introducer, which is time-consuming and inconvenient.
Innovation Solution
A clip device with spring-loaded arms that can be repeatedly opened and closed, allowing multiple devices to be loaded and deployed through a catheter without removing it from the body, enabling efficient deployment and adjustment for tissue engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional mechanical hemostatic devices are used, then hemostasis can be achieved, but the devices are not strong enough to cause permanent hemostasis and cannot be opened and closed repeatedly
Solution Approach 1:
The clip device incorporates a spring member that enables dynamic movement between open and closed states. The spring allows the clip to be repeatedly opened and closed during the procedure, providing flexibility in positioning and deployment while maintaining the ability to achieve permanent hemostasis when finally deployed.
Solution Approach 2:
The clip device is divided into separate functional components: arms for tissue engagement, a spring member for providing opening force, and a delivery mechanism. This segmentation allows the release mechanism to be independently designed to enable repeated opening and closing operations before final deployment.
2Ease of manufacture
If multiple hemostatic devices are deployed one at a time through an introducer, then deployment is possible, but the introducer must be removed and reloaded for each device, which is time-consuming
Solution Approach 1:
Multiple clip devices are combined within a single delivery system. The catheter can accommodate multiple clip devices in a loaded configuration, allowing all clips to be deployed through a single introduction into the body cavity, eliminating the need to remove and reload the introducer for each device.
Solution Approach 2:
Multiple clip devices are nested within the catheter in a compact loaded configuration. Each clip device is contained within the catheter lumen, allowing sequential or simultaneous deployment of multiple clips through the same introduction site, significantly reducing procedural time.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables efficient and repeated deployment of hemostatic clips to achieve effective tissue engagement and hemostasis without the need for frequent introducer removal, reducing procedural time and improving the ability to manage gastrointestinal bleeding.
Implementation Method 1
a spring member (50) disposed between the proximal and distal base members (30, 40)... When the spring member is compressed, the distal ends of the first and second arms tend to be spaced apart from each other... When the spring member is relaxed, the distal ends of the first and second arms are urged adjacent to each other
Data Source
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AI summary
The present embodiments provide a clip device for engaging tissue. The clip device comprises at least first and second arms having proximal and distal ends. The clip device comprises an open state when the spring member is in a compressed state in which the distal end of the spring member is spaced further apart from the distal ends of the first and second arms. In the open state, the distal ends of the first and second arms tend to be spaced apart from each other. Further, the clip device comprises a closed state when the spring member is in a relaxed state in which the spring member is biased to extend distally towards the distal ends of the first and second arms. In the closed state, the distal ends of the first and second arms are adjacent to each other and may engage tissue and promote hemostatis. A delivery system and methods for deploying one or more clip devices also are provided.