Adhesive Thumb Ring for One-Handed Syringe Operation

Solution Overview

Problem

Conventional syringes used for injecting dermal fillers require a clumsy two-handed technique, making it difficult to ensure correct needle placement and increasing the risk of vascular occlusion, which prolongs the procedure and causes patient discomfort.

Innovation Solution

An adhesive thumb ring is attached to the syringe plunger, allowing for one-handed operation by enabling both pushing and pulling of the plunger, thereby facilitating safe and efficient injection of dermal fillers.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a conventional syringe is used with two-handed operation, then the operator can control the syringe, but the procedure time is prolonged and patient discomfort increases

Engineering Contradiction:

Improveprocedure timeVSAvoidoperation complexity

Core Design Contradiction:

ProductivityVSEase of operation

Solution Approach 1:

The plunger head is segmented into distinct functional zones: a pushing surface for forward motion and a pulling surface for backward motion. This segmentation allows the operator to perform both pushing and pulling actions on the same component without requiring multiple hands or tools, thereby reducing procedure time while maintaining operational control

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The plunger head is designed with multi-functionality, serving both as a pushing element and a pulling element. The presence of opposing surfaces that can both be grasped by the operator enables a single hand to perform the complete checking procedure (both pushing and pulling), eliminating the need for two-handed operation and reducing overall procedure time

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If a conventional syringe is used with two-handed technique, then the syringe can be operated, but the risk of vascular occlusion increases due to difficulty in ensuring correct needle placement

Engineering Contradiction:

Improveneedle placement accuracyVSAvoidchecking procedure difficulty

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The plunger head is segmented into distinct functional zones: a pushing surface for forward motion and a pulling surface for backward motion. This segmentation allows the operator to perform both pushing and pulling actions on the same component without requiring multiple hands or tools, thereby reducing procedure time while maintaining operational control

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The plunger head is designed to be self-sufficient for both pushing and pulling operations. The operator can perform the complete checking procedure (both pushing and pulling) using only one hand, as the plunger head provides all necessary surfaces for these actions. This self-service design improves reliability by ensuring correct needle placement through thorough checking while simplifying the operation

Inventive Principle:

Principle #25Self-service

3Object-affected harmful factors

If the syringe requires two-handed operation, then the plunger can be controlled, but the needle tip can become displaced causing patient discomfort

Engineering Contradiction:

Improvepatient discomfortVSAvoidoperation technique

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The plunger head is segmented into distinct functional zones: a pushing surface for forward motion and a pulling surface for backward motion. This segmentation allows the operator to perform both pushing and pulling actions on the same component without requiring multiple hands or tools, thereby reducing procedure time while maintaining operational control

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The plunger head is designed with multi-functionality, serving both as a pushing element and a pulling element. The presence of opposing surfaces that can both be grasped by the operator enables a single hand to perform the complete checking procedure (both pushing and pulling), eliminating the need for two-handed operation and reducing overall procedure time

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 adhesive thumb ring simplifies the injection process, reduces the risk of vascular occlusion, shortens procedure time, and enhances patient comfort by allowing one-handed operation of the syringe.

Implementation Method 1

an adhesive thumb ring which is attachable to a syringe plunger

Methodology Applied

Scientific EffectAdhesion: Adhesive

Data Source

PatentUS10842940B1Adhesive thumb ring and syringe assembly, and an adhesive thumb ring for a syringe

Publication Date: 2020.11.24 PUSATERI TODD CHRISTOPHER

AI summary

An adhesive thumb ring for a syringe is provided including a ring body and an adhesive surface on the ring body. The adhesive surface is configured to adhere to a plunger head on a syringe barrel of a syringe. For instance, the adhesive thumb ring can be rapidly and securely attached to a curved, T-shaped plunger head of a typically pre-filled, pre-packaged dermal filler syringe. The adhesive thumb ring is particularly suitable for facilitating one-handed pushing and pulling operation of the syringe in the injection of dermal filler into the skin of a patient, significantly assisting the syringe operator in preventing vascular occlusion.