Flash Chamber Catheter Inserter for Vein Entry Feedback
Find Innovative SolutionsGenerate Solutions
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 trauma.
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, reducing the risk of further piercing and ensuring accurate insertion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the needle is advanced further to ensure catheter insertion into the vein, then the reliability of insertion is improved, but the risk of piercing the opposite side of the vein increases causing patient injury
Solution Approach 1:
The flash chamber provides visual feedback by displaying blood flow when the needle enters the vein, allowing the operator to stop advancement at the correct moment before piercing the opposite side. This feedback mechanism resolves the contradiction by enabling reliable insertion without excessive advancement.
Solution Approach 2:
The catheter is pre-positioned inside the needle, and the needle is pre-loaded in the device with the flash chamber in place. This preliminary arrangement ensures that when blood appears in the flash chamber, the catheter is already positioned to be advanced into the vein, allowing immediate action without further needle advancement.
2Object-affected harmful factors
If the catheter is released early to prevent needle piercing, then patient injury is reduced, but the catheter may not be properly inserted into the vein
Solution Approach 1:
The visual feedback from blood in the flash chamber provides a clear signal that the needle has entered the vein, allowing the operator to release the catheter at the precise moment when insertion is successful but before dangerous over-advancement occurs.
Solution Approach 2:
The flash chamber acts as an intermediary indicator between the needle position and the catheter release decision. It translates the internal vein entry event into an externally visible signal, enabling accurate timing of catheter release without direct observation of needle position.
3Ease of operation
If the needle is kept exposed for easy catheter manipulation, then ease of operation is improved, but the risk of unintentional piercing and patient injury increases
Solution Approach 1:
The catheter is nested inside the needle, and both are nested within the device body. This nesting arrangement protects the needle tip while maintaining the ability to advance the catheter along the needle when needed, reducing unintentional piercing risk.
Solution Approach 2:
The catheter is pre-positioned and secured to the needle before insertion, eliminating the need for separate manipulation of the exposed needle. The preliminary attachment allows controlled catheter advancement along the needle track, reducing unintentional piercing while maintaining operational ease.
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 while minimizing trauma to the vessel by providing visual confirmation of correct placement and secure needle containment, preventing unintended piercing.
Implementation Method 1
a substantially cylindrical flash chamber, the flash chamber having an inlet in fluid communication with the introduction needle
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.