Adjustable Release Device for Catheter Stent Positioning
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Solution Overview
Problem
Existing release devices for insertion catheters require multiple versions to accommodate different stent lengths, leading to increased production and logistics costs and the risk of operating errors due to varying displacement movements during stent release.
Innovation Solution
A release device with an elongate handle featuring an adjustable adjustment part that can be locked to adapt the guide length to specific stent lengths, ensuring precise positioning and preventing unintentional stent displacement, utilizing a telescoping configuration and locking mechanisms for secure adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple versions of release device are provided for different stent lengths, then adaptability to different stent lengths is improved, but device complexity and production costs increase
Solution Approach 1:
The handle comprises an elongate base part and an elongate adjustment part that can be adjusted along the longitudinal axis of the base part. The adjustment part can be locked at different positions to change the length of the guide accordingly. This dynamic adjustment mechanism allows a single release device to adapt to different stent lengths, eliminating the need for multiple fixed versions.
2Adaptability or versatility
If multiple versions of release device are provided for different stent lengths, then adaptability to different stent lengths is improved, but production and logistics costs increase
Solution Approach 1:
The release device is designed with a universal handle that can accommodate different stent lengths through the adjustable guide mechanism. Instead of manufacturing and distributing multiple specialized versions, a single universal design with adjustment capability serves all stent length requirements, significantly reducing production complexity and logistics costs.
3Device complexity
If fixed guide length is used in release device, then device simplicity is improved, but positioning precision for different stent lengths deteriorates
Solution Approach 1:
The guide length is made dynamically adjustable through the telescoping adjustment part that can be locked at different positions along the base part. This allows the guide length to be precisely matched to the specific stent length being used, ensuring accurate positioning while maintaining operational simplicity through the locking mechanism.
Data Source
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AI summary
The invention relates to a release device for actuating a delivery catheter which comprises an outer casing and a mandrin which is movably arranged in the outer casing. The release device comprises an elongated handle, a fixing seat which is arranged on the handle and which is designed to fix a proximal end piece of the mandrin on the handle in a stationary manner relative to the longitudinal axis of the handle, and a guide which is formed on the handle and which is designed to receive an actuating element that is arranged on the proximal end region of the outer casing in a movable manner with respect to the longitudinal axis of the handle and with respect to the mandrin. The handle comprises an elongated base part and an adjusting part which is connected to the base part and which can be adjusted along the longitudinal axis of the base part. The adjusting part can be switched between an adjusting state in which the adjusting part is held on the base part in an axially movable manner in order to change the length of the guide and a locking state in which the adjusting part is locked on the base part at least in an axial manner.