Vascular Access Blood Collection Device with Conical Tip
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Solution Overview
Problem
Current blood sampling techniques are device-intensive, time-consuming, and costly, involving multiple devices for obtaining and testing blood samples, which can be improved for efficiency and simplicity.
Innovation Solution
A needle assembly with a conically shaped blood collection device and gas permeable vent, featuring customized tip configurations such as Luer tips, crenulations, and movable stems, that facilitates blood collection and dispensing with minimal leakage, integrated with a catheter hub and needle assembly for efficient blood sampling and testing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If multiple devices (needles, vacuum tubes, syringes) are used for blood sampling, then blood collection capability is achieved, but device complexity and process time increase
Solution Approach 1:
The patent combines multiple functions (blood collection, storage, and dispensing) into a single integrated blood collection device. The device includes a hub with an interior cavity for collecting blood, a blood collection chamber for storing blood, and a dispensing mechanism, eliminating the need for separate needles, vacuum tubes, and syringes.
Solution Approach 2:
The blood collection device is designed to perform multiple functions: it collects blood through the hub, stores it in the blood collection chamber, and dispenses it as needed. This multi-functional design replaces several specialized devices with one universal tool.
2Loss of time
If traditional blood sampling methods are used, then blood collection is achieved, but time consumption increases
Solution Approach 1:
The device prepares blood collection in advance by having the hub and blood collection chamber ready to receive blood immediately upon insertion. The flashback chamber is pre-configured to capture blood flow, eliminating the need for separate collection steps.
Solution Approach 2:
The device automatically manages blood collection and storage without requiring manual intervention for transferring blood between devices. The blood flows directly into the hub and is stored in the blood collection chamber, with the dispensing mechanism ready to provide samples when needed.
3Device complexity
If conventional blood collection devices are used, then blood sampling is achieved, but cost increases
Solution Approach 1:
The patent integrates multiple components (hub, blood collection chamber, dispensing mechanism) into a single manufactured unit. This reduces the total number of parts that need to be produced, assembled, and sterilized separately, thereby lowering manufacturing costs.
4Reliability
If blood is collected in traditional devices, then sample acquisition is achieved, but blood leakage or exposure risk increases
Solution Approach 1:
The hub and blood collection chamber are integrated into a single sealed system, eliminating connection points where blood leakage could occur. The unified design ensures blood remains contained within the device from collection through storage to dispensing.
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 solution enables efficient blood collection and dispensing with reduced surface tension, allowing for easy droplet formation and dispensing without the need for additional devices, thereby streamlining the blood sampling and testing process.
Implementation Method 1
a gas permeable vent disposed on the wall
Implementation Method 2
reduced surface tension, allowing for easy droplet formation and dispensing
Data Source
AI summary
The present disclosure is directed to a needle assembly for drawing blood. The needle assembly can be a standalone or part of an over-the-needle medical device, such as an intravenous catheter. A blood collection device is attached directly or indirectly to the needle hub of the needle assembly and/or to a catheter hub, such as through a Y-site or adaptor connected to a tubing that is connected to the catheter hub. The needle is configured to access the vascular system to draw blood, which then passes to the blood collection device via the needle lumen, which has a tip having a discontinuity opening, an opening with a movable stem, or a shaft element with a lumen.