Prosthetic Valve Crimping Loop for Pre-Assembled Delivery
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Solution Overview
Problem
Current systems for delivering prosthetic valves into the body lack an efficient method for reducing the valve's diameter to a delivery configuration, requiring complex and cumbersome crimping processes that complicate pre-assembly and deployment.
Innovation Solution
A crimping device with a radially compressible collet and rotatable knob is used to transition a prosthetic valve from a partially crimped to a delivery configuration, integrated with a delivery catheter and packaged in a sterile environment for simplified deployment, allowing for precise control and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a complex crimping process is used to reduce valve diameter, then the valve can be delivered, but the device complexity and ease of operation deteriorate
Solution Approach 1:
The valve is pre-assembled in a partially crimped configuration within the crimping device before delivery. This preliminary action reduces the valve diameter in advance, eliminating the need for complex crimping operations during the delivery procedure and simplifying the overall process.
Solution Approach 2:
The crimping device is designed with a nested structure where the partially crimped valve is housed within the crimping device, which itself can be inserted into the delivery catheter. This nesting arrangement integrates multiple functions into a compact configuration, reducing device complexity while maintaining crimping capability.
2Volume of moving object
If a complex crimping process is used to reduce valve diameter, then the valve can be delivered, but the ease of operation deteriorates
Solution Approach 1:
The valve is pre-assembled in a partially crimped configuration within the crimping device before delivery. This preliminary action reduces the valve diameter in advance, eliminating the need for complex crimping operations during the delivery procedure and simplifying the overall process.
Solution Approach 2:
The crimping device is designed to automatically maintain the valve in a crimped state through its structural configuration. The device self-regulates the crimping force and maintains positioning without requiring complex manual adjustments, thereby improving ease of operation.
3Productivity
If the valve is pre-assembled in a partially crimped configuration, then the productivity is improved, but the device complexity increases
Solution Approach 1:
The crimping device is designed with a nested structure where the partially crimped valve is housed within the crimping device, which itself can be inserted into the delivery catheter. This nesting arrangement integrates multiple functions into a compact configuration, reducing device complexity while maintaining crimping capability.
Solution Approach 2:
The crimping device is designed to perform multiple functions: it crimps the valve, houses the crimped valve, and can be inserted into the delivery catheter. This multi-functionality reduces the need for separate devices, thereby improving productivity without proportionally increasing device complexity.
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
The system enables efficient crimping and deployment of prosthetic valves by reducing the complexity of the crimping process, allowing for pre-assembly in a partially crimped state and easy transition to a delivery configuration, enhancing the ease and precision of valve placement within the body.
Implementation Method 1
a radially compressible collet positioned around the valve and a rotatable knob coupled to the collet, wherein rotation of the knob causes radial compression of the collet and crimping of the valve
Implementation Method 2
a rotatable knob coupled to the collet, wherein rotation of the knob causes radial compression of the collet and crimping of the valve
Data Source
AI summary
A device for crimping a radially expandable and collapsible prosthetic valve comprises a crimping loop having a first end portion, a second end portion, and a loop portion extending between the first and second end portions and defining an opening configured to receive the prosthetic valve. The crimping loop is movable between a first state in which the opening has a first diameter and a second state in which the opening has a second diameter smaller than the first diameter such that when the prosthetic valve is positioned within the loop portion, movement of the crimping loop from the first state to the second state is effective to reduce a diameter of the prosthetic valve. A method for crimping a prosthetic valve comprises reducing a diameter of an opening of a crimping loop, thereby radially compressing an at least partially expanded prosthetic valve disposed within the opening.