Flash Chamber Catheter Inserter for Vein Placement Feedback
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Solution Overview
Problem
Inserting medical devices, such as catheters, into patients can be challenging due to difficulties in accurately determining when the device is properly positioned within the vein without unintentionally piercing the opposite side, leading to potential injury and insertion errors.
Innovation Solution
A medical device insertion system comprising a base and top portion with a flash chamber that allows blood or fluid to flow from the vein into a visible chamber, indicating correct placement, and a locking mechanism to secure the needle, along with a catheter design featuring a non-perpendicular angle and keel shape to facilitate successful insertion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the needle is inserted to ensure catheter placement in the vein, then the catheter can be properly positioned, but the needle may pierce the opposite side of the vein causing injury
Solution Approach 1:
The flash chamber provides visual feedback by displaying blood flow when the needle tip is properly positioned within the vein. This feedback mechanism allows the operator to confirm correct placement before advancing the catheter, preventing over-insertion and opposite side piercing while ensuring reliable catheter positioning.
Solution Approach 2:
The flash chamber acts as an intermediary visual indicator between the needle position and the operator's decision-making. By providing a visible signal of blood flow, it mediates the insertion process, allowing precise control of needle advancement and catheter deployment without direct visual observation of the vein.
2Productivity
If the catheter is released early during insertion, then the insertion process can be completed quickly, but the catheter may not be properly positioned in the vein
Solution Approach 1:
The visual feedback from the flash chamber enables rapid confirmation of proper needle positioning within the vein. This allows the operator to make informed decisions about catheter release timing, ensuring accurate placement while maintaining efficient insertion speed through immediate visual confirmation rather than trial-and-error approaches.
3Length of moving object
If the needle insertion depth is increased to ensure catheter delivery, then the catheter can reach the desired position, but the risk of piercing the opposite vein wall increases
Solution Approach 1:
The flash chamber provides continuous visual feedback during needle advancement, showing blood flow when the needle tip is within the vein lumen. This feedback allows the operator to control insertion depth precisely, advancing the needle only as far as needed to establish blood flow and catheter access, thereby preventing excessive insertion and opposite wall piercing.
Solution Approach 2:
The flash chamber allows preliminary confirmation of needle positioning within the vein before the catheter is fully deployed. This preliminary action enables the operator to verify correct placement and adjust insertion depth as needed before completing the catheter delivery, preventing premature deep insertion that could cause opposite wall piercing.
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 system enhances the success rate of medical device insertion by providing visual confirmation of correct placement and reducing the risk of unintended piercing, thereby minimizing trauma and improving insertion accuracy.
Implementation Method 1
a substantially cylindrical flash chamber, the flash chamber having an inlet in fluid communication with the introduction needle. The flash chamber is connected to the base portion
Data Source
AI summary
An insertion device is disclosed. The insertion device includes a base portion, a top portion slidably connected to the base portion, an introduction needle, a catheter in slidable relation to the introduction needle, and a substantially cylindrical flash chamber, the flash chamber having an inlet in fluid communication with the introduction needle. The flash chamber is connected to the base portion, the top portion slidably engages with the flash chamber, and the catheter and the top portion slidably advance with respect to the introduction needle and the base portion.