Dynamic Hemostasis Valve Sealing for Multi-Tool Access
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional hemostasis valves often fail to adequately seal for various interventional tools and can be operationally complex, increasing surgical complications and reducing patient safety.
Innovation Solution
A hemostatic valve with a tubular member and a tensioning mechanism, including a filament, that can constrict, collapse, and seal around a wide range of tool sizes and shapes, maintaining seal integrity even under vacuum conditions, facilitated by a reinforcement structure and an actuator for single-handed operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional hemostasis valves are used, then catheter lumens can be sealed, but adequate sealing for all interventional applications and tools cannot be achieved
Solution Approach 1:
The valve incorporates a dynamic constricting mechanism with adjustable filaments that can adapt their constriction level based on the tool size and shape. The filaments are movable relative to the tubular member, allowing the valve to transition between different constricted states to accommodate various interventional tools while maintaining reliable sealing for each configuration.
Solution Approach 2:
The valve enables change in the physical parameters of the constricting filaments, including their position, tension, and configuration. By adjusting these parameters, the valve can modify its sealing characteristics to match different tool diameters and geometries, achieving both adaptability and sealing reliability across diverse interventional applications.
2Reliability
If traditional hemostasis valves are used, then lumens can be sealed, but operation becomes complicated for operator use
Solution Approach 1:
The valve incorporates a self-adjusting mechanism where the filaments automatically adapt to the inserted tool through elastic deformation and tensioning. This self-service capability eliminates the need for complex manual adjustment procedures, allowing operators to simply insert the tool and have the valve automatically configure itself for optimal sealing, thereby improving ease of operation while maintaining sealing reliability.
3Reliability
If traditional hemostasis valves are used, then single tool sealing is possible, but sealing multiple tools of differing sizes simultaneously cannot be achieved
Solution Approach 1:
The valve is designed with universal constricting filaments that can seal multiple different tools simultaneously. The filaments are configured to provide uniform constriction around various tool diameters and shapes, enabling the single valve structure to serve multiple sealing functions across different interventional tools without requiring tool-specific valve configurations.
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 valve provides robust sealing for multiple tools simultaneously, minimizing leakage and simplifying surgical procedures by allowing easy tool swaps without compromising hemostasis, even under pressure differentials.
Implementation Method 1
The filament can interact with the tubular member to constrict, collapse, and/or seal the tubular member via manipulation of the tensioning mechanism(s)
Implementation Method 2
The tensioning mechanism can include at least one filament that extends around at least a portion of the tubular member. The filament can interact with the tubular member to constrict, collapse, and/or seal the tubular member
Data Source
AI summary
Devices, systems, and methods for sealing medical devices, particularly during intravascular access, are disclosed herein. Some aspects relate to a hemostatic valve for sealing a wide range of medical devices, such as catheters, wires, embolectomy systems. The valve can include an elongate member having a first end, a second end, and a central lumen extending therebetween. A reinforcement structure extends along at least a portion of the elongate member and is coupled to the elongate member. A shell defining a first aperture and a second aperture may be included, which first and second apertures can be fluidly coupled by the elongate member. A tensioning mechanism is coupled to the shell and to the elongate member, the tensioning mechanism can be moveable between a first configuration wherein the tensioning mechanism is collapsed and the central lumen is sealed and a second configuration wherein the central lumen is open.