Bushing Arm Deformation for Endoscopic Clip Release
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Solution Overview
Problem
Current endoscopic hemostasis clipping devices face challenges in efficiently deploying and releasing clips within the body, as they often require complex mechanisms and may not effectively detach from the capsule without manual manipulation, limiting their usability and accuracy.
Innovation Solution
A medical device with a release mechanism featuring a core member and bushing system, where the core member includes engaging elements that deform cantilever arms to disengage from the capsule, allowing for single-stage deployment and retrieval of hemostasis clips, enabling precise clip placement and easy detachment from the capsule.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex release mechanism is used to deploy hemostasis clips, then the clip deployment function is achieved, but the device complexity increases and manual manipulation is required for detachment
Solution Approach 1:
The core member automatically deforms the cantilever arms through its own structural interaction with the bushing, eliminating the need for external manual manipulation or complex release mechanisms. The system serves itself by using the core member's presence and movement to trigger the arm deformation and capsule detachment sequence automatically
Solution Approach 2:
The cantilever arms are designed to be deformable and are extracted from their engaged state with the capsule windows through interaction with the core member. This allows the arms to be taken out of the locked position, enabling automatic detachment of the bushing from the capsule without complex release mechanisms
2Productivity
If manual manipulation is required to detach the bushing from the capsule, then the clip can be deployed, but the procedure time increases and usability decreases
Solution Approach 1:
The core member is pre-configured with engaging elements that automatically interact with the cantilever arms during the deployment sequence. This preliminary arrangement ensures that as the core member moves or is positioned, it automatically deforms the arms and triggers detachment, eliminating the need for subsequent manual manipulation and reducing procedure time
Solution Approach 2:
The system automatically completes the detachment function through the interaction between the core member and cantilever arms, without requiring external manual intervention. This self-service mechanism reduces both the time required and the complexity of the procedure
3Strength
If the arms are held radially outward to engage the capsule, then the bushing is securely attached, but the detachment process becomes more difficult without additional mechanisms
Solution Approach 1:
The cantilever arms are designed to be dynamically deformable, allowing them to transition between the radially outward engaged state (providing strong attachment) and the radially inward detached state. The core member's engaging elements interact with these dynamic arms to facilitate controlled deformation and automatic detachment, making the process easy without compromising attachment strength
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
This solution facilitates efficient and precise deployment of hemostasis clips, allowing for effective tissue gripping and easy release from the capsule, enhancing the usability and accuracy of endoscopic procedures by simplifying the detachment process.
Implementation Method 1
the locking portion sized and shaped to be received within the channel of the bushing to apply a radially outward pressure to the arms such that the arms engage the windows of the capsule
Implementation Method 2
each of the engaging elements engage a corresponding one of the arms to deform the arms radially inward and out of engagement with the windows of the capsule
Data Source
AI summary
A medical device includes (a) a capsule including a lumen extending therethrough, a proximal end of the capsule including at least one window extending therethrough; (b) a bushing including a channel extending therethrough, a distal end including at least one arm extending distally therefrom such that a corresponding one of the arms is releasably engagable with a corresponding one of the windows; and (c) a core member including a locking portion and at least one engaging element. The locking portion is sized and shaped to be received within the channel of the bushing to apply a pressure to the arm such that the arm engages the windows. The engaging element extends laterally outward from a portion of the core member such that the engaging element engages a corresponding one of the arms to deform the arms radially inward and out of engagement with the windows.