Nose Cone Coupling for Post-Crimp Delivery System Assembly
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Solution Overview
Problem
Conventional nose cone attachment to the elongate shaft in delivery systems for prosthetic implants complicates the assembly sequence and interferes with the crimping process, limiting flexibility and efficiency in assembly.
Innovation Solution
A novel attachment mechanism using angled projections and a threaded coupler allows the nose cone to be coupled to the elongate shaft after other system components are assembled, enabling crimping of the implant before nose cone attachment and facilitating flexible assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the nose cone is attached to the elongate shaft using conventional methods before assembly, then the attachment is secure, but the assembly sequence is complicated and the crimping process is interfered with
Solution Approach 1:
The nose cone attachment mechanism is segmented into distinct components: angled projections on the nose cone and corresponding recesses on the elongate shaft. This segmentation allows the nose cone to be attached after other components are assembled, simplifying the overall assembly sequence by enabling modular construction where the nose cone is added as a final step rather than being integrated into the shaft beforehand.
Solution Approach 2:
The angled projections and recesses are pre-configured on the nose cone and elongate shaft respectively, allowing for quick and secure attachment without requiring complex assembly procedures. The preliminary configuration of these coupling features enables the nose cone to be readily attached to the distal end of the elongate shaft after the crimping process is complete.
2Reliability
If the nose cone is attached to the elongate shaft before crimping, then the attachment is stable, but the crimping process is interfered with and assembly flexibility is reduced
Solution Approach 1:
The attachment mechanism provides dynamic flexibility by allowing the nose cone to be attached at different stages of the assembly process. The angled projections and recesses are designed to accommodate attachment after crimping, enabling the assembly sequence to be optimized for each specific application while maintaining secure attachment stability.
Solution Approach 2:
The coupling mechanism changes the attachment parameter from fixed pre-assembly to post-assembly attachment. The angled projections and recesses are designed with specific geometric parameters that enable secure engagement regardless of when the attachment occurs in the assembly sequence, providing flexibility in the manufacturing process while maintaining attachment reliability.
3Strength
If the nose cone is attached early in the assembly process, then the structural integrity is maintained, but the crimping process is interfered with
Solution Approach 1:
The nose cone attachment is extracted from the pre-crimping assembly sequence and performed after crimping is complete. The angled projections and recesses are designed to provide secure structural integrity without interfering with the crimping process, allowing the crimping operation to be performed on the elongate shaft and implant assembly without the nose cone in the way.
Data Source
Figure 1
Figure 2A~2B
Figure 2C~2D
AI summary
The present embodiments relate generally to devices, systems, and methods for delivery systems including nose cones. A delivery system may include a handle and an elongate shaft coupled to the handle. The delivery system may include a nose cone having a distal opening at a distal end and a proximal opening at a proximal end, the proximal opening configured to receive the distal end of the elongate shaft. Projections or threads may couple the nose cone to the distal end of the elongate shaft.