Dual-Chamber Blood Reservoir for Turbulence and Microemboli Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing blood perfusion systems face challenges in efficiently managing and filtering blood from multiple sources, including vent, venous, purge, and suction blood, which can lead to turbulence and gaseous microembolic activity, particularly in cardiopulmonary bypass procedures.
Innovation Solution
A dual chamber blood reservoir with separate activated and non-activated sections, featuring elongate filters and foaming/defoaming assemblies, minimizes turbulence and reduces gaseous microembolic activity by using venous and vent inlet tubes that extend through purgers funnels and cylindrical filters, along with a releasable barrier to manage blood flow between sections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If blood from multiple sources is collected in a single chamber, then the reservoir can handle various blood sources, but turbulence and gaseous microembolic activity increase
Solution Approach 1:
The blood reservoir is divided into multiple separate chambers, each receiving blood from specific sources through dedicated inlet tubes. This segmentation allows each chamber to handle blood flow independently, reducing turbulence while maintaining the ability to collect blood from multiple sources including vent, venous, purge, and suction blood.
2Ease of operation
If inlet tubes extend through filters and funnels, then blood flow is directed properly, but device complexity increases
Solution Approach 1:
The inlet tubes are nested within the filter structures and funnels, with tubes extending through multiple components in sequence. This nesting arrangement allows proper blood flow direction control while consolidating multiple functions into an integrated structure, reducing overall device complexity.
3Ease of operation
If a releasable barrier is added to manage blood flow between chambers, then flow control is improved, but device complexity increases
Solution Approach 1:
A releasable barrier is implemented between chambers that can be dynamically positioned to control blood flow direction. This dynamic element allows flexible management of blood flow between chambers based on surgical needs, improving operational control while the barrier's simple design minimizes added 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 dual chamber design effectively filters and stores blood from various sources, reducing turbulence and microembolic activity, ensuring smooth blood flow and improved safety in cardiopulmonary bypass procedures.
Implementation Method 1
The non-activated, or clean, section includes an elongate filter
Implementation Method 2
a foamer that is disposed about an upper region of the elongate filter
Implementation Method 3
A venous inlet tube extends downwardly through the cylindrical lower portion of the purgers funnel to a position that is proximate a bottom surface of the elongate filter
Data Source
AI summary
A blood reservoir may be used in combination with other elements such as a heart lung machine (HLM), oxygenator, heat exchanger, arterial filter and the like to form an extracorporeal blood circuit that may be employed in a procedure such as a bypass procedure. The blood reservoir may be configured to receive, filter and store blood from a number of sources including vent blood (from within the heart), venous blood (from a major vein), purge blood (from a sampling line) and cardiotomy or suction blood (from the surgical field).