Guidewire Collet Clamping for Axial and Rotational Control
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Solution Overview
Problem
Existing guidewire clamping devices fail to provide adequate control over guidewire position and rotation, leading to axial displacement and potential damage to catheters during medical procedures and storage, especially when guidewires are reinserted or extend beyond the curved end of catheters.
Innovation Solution
A guidewire clamping device with a handle, collar, and collet system that allows for secure gripping and controlled rotation of guidewires, featuring a textured surface for better handling, adjustable clamping force, and a compliant collet design to prevent damage, accommodating a range of guidewire diameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional guidewire clamping device is used, then the device structure is simple, but it fails to provide adequate control over guidewire position and rotation, leading to axial displacement
Solution Approach 1:
The clamping device is divided into distinct functional segments: a handle for manual operation, a collar for positioning, and a collet for clamping. Each segment performs a specific function, allowing precise control over guidewire position and rotation while maintaining manageable structural complexity.
Solution Approach 2:
The collet acts as an intermediary component between the collar and the guidewire. It provides the necessary clamping force and rotational control mechanism, mediating the interaction between the device components and the guidewire to prevent axial displacement and enable controlled rotation.
2Ease of operation
If the guidewire extends beyond the curved end of the catheter, then the guidewire can be manipulated freely, but it causes damage to the catheter during storage and shipment
Solution Approach 1:
The clamping device is designed to secure the guidewire in a predetermined position and orientation before storage and shipment. The collet applies controlled clamping force to fix the guidewire against the curved end of the catheter, preventing it from extending beyond and causing damage during handling and storage.
Solution Approach 2:
The device allows adjustment of clamping parameters including the degree of compression applied by the collet and the positional parameters of the collar. This enables optimization of the clamping force to securely hold the guidewire without excessive force that could damage the catheter, while still allowing necessary manipulation during procedures.
3Adaptability or versatility
If reinsertion of the guidewire is performed, then the guidewire can be reused, but it alters the axial displacement and rotational angle, compromising precision
Solution Approach 1:
The collar and collet mechanism provides a feedback system for positioning the guidewire. The collar can be adjusted to compensate for axial displacement, and the collet maintains consistent rotational alignment. This feedback mechanism allows the guidewire to be reinserted and reused while maintaining precise control over axial position and rotational angle.
Data Source
AI summary
A guidewire clamping device system that includes a handle with a body that defines a lumen that extends from a proximal end of the handle to a distal end of the handle. The distal end of the handle comprising a coupling member. The system further includes a collar that defines a lumen that extends from a proximal end to a distal end of the collar. The collar is configured to couple to the distal end of the handle. The system further includes a collet that includes a body with a tubular section with a lumen, and a plurality of ramps that are flared outward from the tubular section in an unconstrained state. The collet is disposed within a lumen of the handle and the collar. The collar is coupled to the handle which biases the plurality of ramps of the collet inward to a constrained state.