Blood Sampling Device with Vented Cap and Compressible Reservoir
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Solution Overview
Problem
Current blood sampling techniques are device-intensive, increasing the time and cost of testing processes, and there is a need for a simplified method that can collect samples for both point-of-care and conventional laboratory testing.
Innovation Solution
A biological fluid sampling device with a housing containing a reservoir and lumens for fluid communication, featuring a vented cap for air venting and a compressible portion for expelling samples, which can be used in conjunction with a vascular access device to collect and transfer blood samples efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple devices (needles, vacuum tubes, syringes) are used for blood sampling, then blood samples can be collected for testing, but the device complexity and time required increase
Solution Approach 1:
The patent combines multiple separate devices (needle, vacuum tube, syringe) into a single integrated sampling device. The housing encloses a reservoir that receives blood from a vascular access device through an access lumen, eliminating the need for separate vacuum tubes and syringes while maintaining sample collection capability.
Solution Approach 2:
The sampling device is designed to perform multiple functions: collecting blood samples for both point-of-care testing and conventional laboratory testing, venting air during sampling, and expelling samples through compression. This multi-functionality reduces the need for multiple specialized devices.
2Adaptability or versatility
If multiple devices are used for blood sampling, then comprehensive testing can be performed, but the time required for the testing process increases
Solution Approach 1:
By integrating the blood collection, air venting, and sample expulsion functions into a single device, the patent eliminates the sequential steps of using separate vacuum tubes and syringes, thereby reducing the time required for blood sampling while maintaining versatility for different testing types.
3Reliability
If multiple devices are used for blood sampling, then sample collection is possible, but the cost of the testing process increases
Solution Approach 1:
The patent reduces the number of components required for blood sampling by integrating multiple functions into a single device. This consolidation decreases the cost of the testing process by eliminating the need to purchase and manage multiple separate devices such as vacuum tubes, syringes, and needles.
4Device complexity
If a simplified sampling device is used, then device complexity is reduced, but the ability to collect samples for both point-of-care and laboratory testing must be maintained
Solution Approach 1:
The sampling device is designed with multi-functionality to collect blood samples suitable for both point-of-care testing and conventional laboratory testing. The housing, reservoir, and access lumens are configured to accommodate different testing requirements without requiring multiple specialized devices.
Solution Approach 2:
The device incorporates a compressible portion that can be dynamically compressed to expel the blood sample from the reservoir. This dynamic mechanism enables the same device to serve multiple purposes: collecting samples for immediate point-of-care testing or for later laboratory analysis, thereby maintaining versatility while simplifying the overall system.
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 reduces the number of components required for blood sampling, enabling efficient collection and transfer of samples for both point-of-care and laboratory testing, thereby decreasing the time and cost associated with the testing process.
Implementation Method 1
the vented cap comprising a gas permeable vent in gaseous communication between the interior of the reservoir and an ambient environment
Implementation Method 2
compression of the compressible portion may expel a fluid sample from the interior of the reservoir through the access lumen
Data Source
AI summary
A biological fluid sampling device for collecting a blood sample from a separate vascular access device and for ejecting a portion of the collected sample to a point-of-care testing device for analysis is provided. The biological fluid sampling device includes a body enclosing a reservoir. The reservoir has an internal volume sufficient to contain enough blood for use in a diagnostic test. The sampling device further includes: an access lumen extending from a distal end of the body for establishing fluid communication between a separate vascular access device and the reservoir; an outflow lumen also in fluid communication with the reservoir; and a removable vented cap attached to the outflow lumen including a gas permeable vent in gaseous communication between the reservoir and ambient air. In addition, several sample and transfer devices are provided for obtaining a sample from a subject and transferring the sample to a point-of-care testing device.