Implantable Chamber Rounded Tip for Atraumatic Insertion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing implantable chambers for under-skin injection cause trauma and injury to patients due to their insertion method, which involves a pointed tip that can damage skin and subcutaneous tissues.
Innovation Solution
The implantable chamber design features a rounded and minimally invasive tip with specific curvature ratios, a flexible septum, and a smooth peripheral shell to facilitate easy insertion with reduced skin trauma, along with a non-carcasing needle for puncture without solid fragment detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a pointed tip is used for the implantable chamber, then insertion is facilitated by allowing gradual insertion under the skin, but it causes trauma and injury to the patient's skin and subcutaneous tissues
Solution Approach 1:
The implantable chamber incorporates a rounded tip instead of a pointed tip. This curvature allows the chamber to be gradually inserted under the skin while distributing pressure over a larger surface area, thereby facilitating insertion without causing trauma or injury to the skin and subcutaneous tissues.
2Length of moving object
If a pointed tip is used for the implantable chamber, then insertion can be performed through a small incision, but it leads to injury to the patient's skin and subcutaneous tissues
Solution Approach 1:
The rounded tip design enables the chamber to be inserted through a small incision while avoiding tissue injury. The curved surface distributes mechanical stress during insertion, preventing concentrated forces that would cause damage to the skin and subcutaneous tissues.
Solution Approach 2:
The rounded tip acts as a cushioning element before the main body of the chamber enters the tissue. This pre-cushioning effect absorbs and distributes insertion forces, protecting the skin and underlying tissues from trauma during the implantation process.
3Object-affected harmful factors
If a rounded tip is used for the implantable chamber, then skin trauma is reduced, but insertion may become more difficult compared to a pointed tip
Solution Approach 1:
The rounded tip is designed with optimized curvature radius that balances trauma reduction with insertion ease. The specific geometric parameters of the rounded tip allow it to penetrate tissue gradually while maintaining sufficient edge sharpness to facilitate smooth insertion without excessive force.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The chamber comprises a peripheral shell (52) having a peripheral lip (78). It includes a tip (79) extending between the peripheral lip (78) and a lower surface (72) of the peripheral shell (52), projecting from the peripheral lip (78), to a free end (81). In a median vertical plane containing the free end (81), the ratio between: - the vertical radius of curvature (RV) of the tip (79), taken between the peripheral lip (78) and the free end (81); and - the distance (DP) separating the projection (P1) of the peripheral lip (78) onto the lower surface (72) closest to the free end (81) and the projection (P2) of the free end (81) onto a plane defined by the lower surface (72) is between 2.0 and 4.0.