Subcutaneous Injection Port Ultrasonic Septum Detection

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Solution Overview

Problem

Existing subcutaneously implanted medicinal liquid injection ports face challenges in accurately locating the septum for puncture due to incomplete ultrasonic contrast, leading to potential tissue inflammation and necrosis from improper needle insertion.

Innovation Solution

Incorporating a contrast portion in the housing main body and/or septum to enhance ultrasonic detection of the puncturable region, allowing for clear visualization of the septum's position using ultrasonic waves.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If three markers are arranged on the outer periphery of the septum to form a triangular shape for ultrasonic detection, then the septum position can be grasped, but the surface of the septum is only partially contrasted on the echo image making it difficult to confirm the position

Engineering Contradiction:

Improveseptum position detection accuracyVSAvoidcomplete contrast information of septum surface

Core Design Contradiction:

Measurement precisionVSLoss of information

Solution Approach 1:

The contrast portion extends in the thickness direction of the septum rather than being limited to the surface. This three-dimensional extension ensures that the contrast portion is detected across the entire thickness, providing complete contrast information of the septum surface and eliminating the partial contrast problem of the triangular marker arrangement.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The contrast portion is specifically disposed over the puncturable region of the septum in the thickness direction. This localized contrast enhancement ensures that the most critical area for puncture (the puncturable region) provides strong ultrasonic contrast, while other portions of the septum may have different contrast characteristics.

Inventive Principle:

Principle #3Local quality

2Ease of operation

If the medicinal liquid injection port is implanted with the septum facing toward the skin for easy puncture, then the puncture needle can access the septum, but the septum position cannot be visually recognized from outside the body

Engineering Contradiction:

Improvepuncture accessibilityVSAvoidvisual recognition of septum position

Core Design Contradiction:

Ease of operationVSLoss of information

Solution Approach 1:

The contrast portion acts as an intermediary that bridges the gap between the septum (which cannot be visually recognized) and the ultrasonic detection system. By providing ultrasonic contrast, the contrast portion enables indirect visualization of the septum position through the skin, allowing accurate puncture without direct visual recognition.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Measurement precision

If a contrast portion is disposed in the housing main body and/or septum over the thickness direction to enhance ultrasonic detection, then the puncturable region can be clearly visualized, but the device structure becomes more complex

Engineering Contradiction:

Improvepuncturable region detection clarityVSAvoidhousing and septum structure

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The contrast portion is integrated into the housing main body and/or septum as a unified structure rather than being a separate component. This merging of the contrast portion with the existing structural elements simplifies the overall device architecture while maintaining the ultrasonic contrast enhancement function.

Inventive Principle:

Principle #5Merging (Combining)

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

Facilitates accurate puncture of the septum by providing a clear echo image of the puncturable region, reducing the risk of tissue inflammation and necrosis, and enabling easier insertion of the needle into the medicinal liquid storage portion.

Implementation Method 1

a contrast portion (45) that can detect the puncturable region (41) of the septum (40) with an ultrasonic wave

Methodology Applied

Scientific EffectUltrasonic wave reflection: Echo

Data Source

PatentUS11484647B2Medicinal liquid injection port and medicinal liquid injection device

Publication Date: 2022.11.01 PIOLAX MEDICAL DEVICES

AI summary

There is provided a medicinal liquid injection port to be implanted subcutaneously. A housing main body is provided with a medicinal liquid storage portion therein, an opening portion that opens the medicinal liquid storage portion, and a discharge hole that communicates with the medicinal liquid storage portion and configured to be connected with a tube. A septum attached to the opening portion of the housing main body and provided with a puncturable region that can be punctured with a puncture needle. A contrast portion is disposed in the septum over a thickness direction of the septum so as to detect the puncturable region of the septum with the ultrasonic wave. The contrast portion is provided in the septum within a thickness region of the septum and all of the contrast portion is positioned at an inner side of the septum in the thickness direction of the septum.