Catheter Insertion Device Radially Expandable Bleedback Valve
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Solution Overview
Problem
Existing catheter insertion devices face challenges in minimizing blood loss during procedures while ensuring access to venous and arterial systems without introducing air, as they often require significant force to penetrate hemostasis valves and may lead to excessive blood perfusion.
Innovation Solution
A catheter insertion device with a radially expandable bleedback valve that reduces blood perfusion by creating a seal around the catheter, allowing it to pass through while maintaining access and preventing air introduction, thereby limiting blood loss and ensuring system access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a catheter straightener is inserted into the hemostasis valve to facilitate catheter insertion, then the alignment and insertion of the catheter is improved, but blood bleedback into the catheter straightener occurs causing blood loss
Solution Approach 1:
A bleedback valve is introduced as an intermediary component between the catheter straightener and the hemostasis valve. This valve allows the catheter to pass through while preventing blood from flowing back into the catheter straightener, thus resolving the contradiction between facilitating insertion and preventing blood loss
Solution Approach 2:
The bleedback valve employs a flexible membrane or shell structure that can deform to allow catheter passage while maintaining a seal to prevent blood backflow. The flexible material conforms to the catheter shape while blocking blood flow, solving the dual requirement of insertion facilitation and blood loss prevention
2Reliability
If significant force is applied to penetrate the hemostasis valve to ensure system access, then access to venous and arterial systems is achieved, but excessive blood perfusion occurs
Solution Approach 1:
The catheter straightener with integrated bleedback valve performs preliminary action by establishing a sealed pathway through the hemostasis valve before actual catheter insertion. The bleedback valve is pre-positioned to prevent blood perfusion during the penetration process, allowing reliable access without excessive blood loss
Solution Approach 2:
The bleedback valve acts as a mediator that enables the penetration process while controlling blood flow. It allows the catheter straightener to apply necessary force to penetrate the hemostasis valve while simultaneously preventing excessive blood perfusion during the procedure
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 device effectively limits blood loss and ensures proper access to venous and arterial systems, reducing the need for blood transfusions and preventing air introduction, while facilitating the insertion of catheters through hemostasis valves.
Implementation Method 1
A bleedback valve can include an outer circumferential surface and can be disposed within the shaft lumen at a distal end of the shaft distal portion
Data Source
AI summary
Various embodiments of the present disclosure provide a medical device straightener. The medical device straightener can comprise an elongate shaft extending along a shaft longitudinal axis, the elongate shaft including a shaft proximal end and a shaft distal end, wherein a shaft inner wall of the elongate shaft defines a shaft lumen extending therethrough. The medical device straightener can comprise a bleedback valve that includes an outer circumferential surface. The bleedback valve can be disposed at a distal end of the elongate shaft, within the shaft lumen, wherein a portion of the outer circumferential surface is in communication with the shaft inner wall. The bleedback valve can define a radially expandable lumen longitudinally extending through a center of the bleedback valve.