Therapeutic Injection Device Segmentation Prevents Cannula Damage
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Solution Overview
Problem
Existing therapeutic agent injection devices for conditions like diabetes face issues with needle damage to injection ports, leading to drug leakage and limited flexibility in needle length, which can result in adverse effects and inefficient drug delivery.
Innovation Solution
A therapeutic agent injection device with a body having a patient face and a port face, featuring an introducer port and an injection port in fluid communication through a cross channel, a delivery tube for subcutaneous delivery, and a patch for adhesive attachment, allowing for rotatable body portions and a pop-up indicator to detect pressure anomalies, ensuring controlled drug delivery without needle damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If a longer injection needle is used to reach sufficient subcutaneous depth, then the drug delivery depth is improved, but the injection port cannula may be damaged causing drug leakage
Solution Approach 1:
The injection device is divided into separate functional components: an introducer port for needle insertion and an injection port for drug delivery. This segmentation allows the needle to be replaced independently from the injection port, preventing needle damage to the cannula while maintaining reliable drug delivery through the dedicated injection port.
Solution Approach 2:
The injection port is pre-installed in the subcutaneous tissue with the cannula positioned and sealed before drug administration. This preliminary setup ensures that when the needle inserts through the introducer port, it cannot damage the injection port cannula, as the injection port is already in place and protected.
2Reliability
If a shorter injection needle is used to avoid damaging the injection port, then the injection port integrity is improved, but the drug may not reach sufficient subcutaneous depth
Solution Approach 1:
By separating the introducer port and injection port functions, the system allows the use of shorter needles through the introducer port while maintaining adequate drug delivery depth through the dedicated injection port cannula, eliminating the need to compromise needle length to protect the injection port.
Solution Approach 2:
The introducer port acts as an intermediary structure that facilitates needle insertion without being the final drug delivery interface. This intermediary allows the needle to be replaced after use, enabling the use of appropriately short needles that won't reach the injection port cannula, thus preventing damage while maintaining delivery effectiveness.
3Ease of operation
If the injection device allows rotation of the body portions, then the ease of operation is improved, but the device complexity increases
Solution Approach 1:
The injection device incorporates rotatable body portions that can be dynamically adjusted during use. The first and second body portions are connected via a flange allowing independent rotation about the introducer axis, enabling the injection axis to be oriented at different angles for convenience while maintaining the structural integrity and functionality of the device.
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 ensures controlled and flexible subcutaneous delivery of therapeutic agents, preventing drug leakage and allowing for convenient rotation of the injection axis, thus maintaining effective drug delivery and patient comfort.
Implementation Method 1
a delivery tube for subcutaneous delivery of the therapeutic agent to the patient, the delivery tube projecting from and being generally perpendicular to the patient face
Implementation Method 2
a patch, the patch being attached to the patient face and being operable to adhesively attach to the patient
Implementation Method 3
a pop-up indicator disposed in the introduces channel, the pop-up indicator having a normal state when pressure in the introduces channel is normal and an alarm state when pressure in the introduces channel exceeds a predetermined value
Data Source
AI summary
A therapeutic agent injection device including an injection device for delivering a therapeutic agent to a patient having a body, the body having a patient face and a port face opposite the patient face, the port face having an introducer port including an introducer channel and an injection port including an injection channel, the introducer channel being in fluid communication with the injection channel through a cross channel, the injection channel defining an injection axis; a delivery tube for subcutaneous delivery of the therapeutic agent to the patient, the delivery tube projecting from and being generally perpendicular to the patient face, the delivery tube defining an introducer axis and being in fluid communication with the injection port; and a patch, the patch being attached to the patient face and being operable to adhesively attach to the patient; wherein the injection axis is parallel to the introducer axis.