Precision Low-Dose Syringes with Ergonomic Attachments
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing syringes are inadequate for precise control and low-waste delivery of small volumes of high-concentration medications, as they lack precision in incremental dosing, are prone to structural deficiencies when reduced in size, and result in significant waste due to 'dead space' in the syringe lumen.
Innovation Solution
The development of precision low-dose, low-waste syringe configurations with reduced lumen diameters and ergonomic attachments that include traction wheels, tactile and audible feedback, and optical enhancements for improved control and accuracy, along with syringe designs that minimize residual waste by eliminating dead space in the needle hub interface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If syringe size is reduced to deliver small volumes, then precision of incremental dosing is improved, but structural stability deteriorates due to plunger buckling
Solution Approach 1:
The syringe is divided into modular components including a separate plunger assembly with finger engagement features and a barrel with standardized interface. This segmentation allows optimization of each component for its specific function while maintaining overall structural integrity through standardized connection interfaces.
Solution Approach 2:
The plunger features localized structural reinforcements including a thicker plunger rod in critical stress zones and a specifically designed plunger head with finger engagement surfaces. These local quality enhancements provide structural stability where needed without increasing overall syringe size, enabling precise small volume delivery.
2Loss of substance
If syringe lumen diameter is reduced to minimize waste, then loss of substance is improved, but ease of operation deteriorates due to reduced plunger control
Solution Approach 1:
The plunger control mechanism transitions from direct linear pushing to a rotational or articulated finger engagement system. The plunger head includes surfaces that engage between fingers or with a pincer grip, converting linear plunger motion into controlled movement through finger dexterity, thereby improving ease of operation for small volume delivery.
Solution Approach 2:
The syringe includes visual feedback mechanisms such as graduated markings on the barrel and transparent or translucent sections that allow real-time observation of plunger position and remaining volume. This feedback enables precise control of incremental dosing and confirms complete delivery, minimizing waste while maintaining ease of operation.
3Measurement precision
If syringe form factor is reduced for precision dosing, then measurement precision is improved, but readability of syringe indicia deteriorates
Solution Approach 1:
The syringe utilizes color coding and high-contrast visual indicators including colored graduated markings, colored plunger tips, and contrast-enhanced text. These color changes and visual enhancements maintain readability of syringe indicia even when the overall form factor is reduced for precision dosing applications.
Solution Approach 2:
The syringe design incorporates three-dimensional visual features such as raised graduated markings, beveled edges, and angular plunger indicators that provide tactile and visual feedback from multiple angles. This dimensional enhancement maintains readability without increasing syringe size, allowing precise dosing with improved indicia visibility.
4Loss of substance
If plunger diameter is reduced to fit small lumen, then loss of substance is improved, but structural stability deteriorates due to plunger buckling
Solution Approach 1:
The plunger features localized structural reinforcements including a thicker plunger rod in critical stress zones and a specifically designed plunger head with finger engagement surfaces. These local quality enhancements provide structural stability where needed without increasing overall syringe size, enabling precise small volume delivery.
Solution Approach 2:
The plunger is constructed from composite materials or material combinations that provide high strength-to-weight ratio and resistance to buckling. The plunger rod may use materials with enhanced mechanical properties or a composite structure that maintains stiffness while minimizing diameter, thereby reducing dead space waste while preventing structural failure.
Data Source
AI summary
Precision low-dose, low-waste syringe configurations have a reduced diameter lumen for dispensing 0.01 ml increments of contents. Plunger and lumen configurations and a needle interface eliminate dead space. Ergonomic attachments improve the control and precision of delivery of syringes. An attachment main body includes a gripping surface to permit a user to engage the attachment and move the attachment main body, and thus the syringe plunger relative to the syringe barrel using sliding movement. Optical enhancement features are provided on the attachment to improve the readability of gradations and plunger position. The attachment may be provided with an assist feature, which may be a traction wheel mounted on the attachment body. An alternative configuration suitable for syringe contents of higher viscosity may include a pair of toothed pinion gears on a wheel and which cooperate with respective toothed racks formed on or fastened to the syringe body.