Oblique Poultry Injection Needles for Vaccine Backflow Control

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Solution Overview

Problem

Existing devices for injecting veterinary products into poultry fail to effectively minimize vaccine backflow and mislocation, leading to reduced vaccine effectiveness and tissue damage.

Innovation Solution

A device with a retention member and injection needles oriented at specific angles (15° to 45°) and controlled horizontal spacing to create oblique muscle penetration, minimizing backflow and ensuring precise targeting.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional injection devices are used, then injection can be performed, but vaccine backflow occurs reducing effectiveness

Engineering Contradiction:

Improvevaccine effectivenessVSAvoidvaccine backflow

Core Design Contradiction:

ReliabilityVSLoss of substance

Solution Approach 1:

The patent changes the injection angle parameter from conventional vertical injection to oblique injection at angles of 15-45 degrees relative to the muscle fiber direction. This parameter change prevents vaccine backflow by aligning the injection channel with muscle fiber orientation, ensuring vaccine remains in the target area and maintains effectiveness.

Inventive Principle:

Principle #35Parameter changes

2Measurement precision

If conventional injection devices are used, then injection can be performed, but mislocation of vaccine injection occurs

Engineering Contradiction:

Improveinjection accuracyVSAvoidinjection location precision

Core Design Contradiction:

Measurement precisionVSManufacturing precision

Solution Approach 1:

The patent applies local quality by creating a retention member with an anatomic shape that conforms to the specific local geometry of the fowl's body and muscle structure. This localized adaptation ensures precise positioning of the injection needle within the target muscle area, preventing mislocation while maintaining accurate injection delivery.

Inventive Principle:

Principle #3Local quality

3Ease of operation

If vertical injection is used, then simple injection process, but vaccine acts aggressively in surrounding tissues causing damage

Engineering Contradiction:

Improveinjection process simplicityVSAvoidtissue damage

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent modifies the injection angle parameter from vertical (90 degrees to muscle surface) to oblique (15-45 degrees relative to muscle fiber direction). This parameter change redirects the vaccine flow along the muscle fiber orientation, preventing aggressive action in surrounding tissues and eliminating tissue damage while maintaining operational simplicity through the guided retention member.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS12440322B2System and method for injecting poultry

Publication Date: 2025.10.14 DESVAC

AI summary

An injector, injection system, and methods for injecting products to a fowl, in which the injector includes a retention member with at least one hole formed in the retention member, a retention member supporting surface supporting the retention member, and injection needle being movable through the hole. A longitudinal axis of the injection needle and an axis perpendicular to the retention member supporting surface form a vertical angle between 15° and 45°.