Curved Bone Substitute Applicator with Segmented Drainage Nozzle
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Solution Overview
Problem
Existing devices for applying bone substitute material in dentistry and orthopedics face challenges in minimizing material loss, especially with high viscosity materials, due to clogging and difficulty in delivering the material along a curved path without significant loss.
Innovation Solution
A device featuring a cylinder with a flexible, single-piece sealing piston and a curved discharge nozzle, equipped with multiple drainage openings around the injection opening, allows for controlled addition of a liquid phase to achieve the desired consistency and ensures minimal material loss by allowing excess fluid to be ejected through these openings, facilitating the delivery of high viscosity bone substitute material along a curved path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If the bone substitute material has high viscosity to minimize material loss during application, then material loss is reduced, but the material tends to clog when pressed through a constriction
Solution Approach 1:
The discharge nozzle is divided into multiple functional openings: a central injection opening for introducing liquid phase and multiple drainage openings arranged around it. This segmentation allows the high viscosity material to be pushed forward while excess liquid is drained separately, preventing clogging in the constriction region.
Solution Approach 2:
The drainage openings act as intermediaries to remove excess liquid phase from the material mixture. By providing a dedicated pathway for liquid drainage, the system enables the use of high viscosity material without causing clogging, as the drainage openings prevent liquid accumulation that would otherwise block the discharge path.
2Ease of operation
If the material is drawn up into a syringe to facilitate application, then application is simplified, but material loss occurs when applying in the upper jaw
Solution Approach 1:
The device is pre-configured with a curved discharge nozzle that matches the anatomical curvature of the upper jaw. This preliminary design feature allows the material to be delivered directly along the curved path to the target site, minimizing material loss that would occur with straight syringe application.
Solution Approach 2:
The discharge nozzle is designed with a curved geometry that conforms to the curvature of the upper jaw anatomy. This curved design enables the material to follow the natural anatomical path, improving delivery efficiency and reducing material loss compared to straight application methods.
3Ease of manufacture
If a two-syringe device is used to mix mineral component and collagen phase, then mixing is achieved, but the entire mixture must be relatively fluid which complicates the system
Solution Approach 1:
The invention combines the mineral component storage cylinder, liquid phase injection system, and drainage function into a single integrated device. The attachment serves multiple functions: closing the cylinder, providing liquid injection, and enabling drainage. This merging reduces system complexity compared to separate two-syringe devices while maintaining mixing capability.
Solution Approach 2:
The attachment is designed as a multi-functional component that performs multiple tasks: sealing the cylinder opening, providing an injection pathway for liquid phase, and serving as a sieve for drainage. This universal design eliminates the need for separate components, simplifying the overall system while achieving effective mixing.
4Reliability
If the discharge nozzle has the same internal diameter as the tube to prevent clogging, then material flow is maintained, but material remains in the discharge nozzle causing loss
Solution Approach 1:
The discharge nozzle is segmented with multiple drainage openings arranged around the central injection opening. This segmentation creates separate pathways: the central region maintains material flow while the peripheral drainage openings remove excess liquid, preventing material accumulation and loss.
Solution Approach 2:
Different regions of the discharge nozzle have different functions: the central area maintains patent flow for material delivery, while the peripheral drainage openings provide localized liquid removal. This local differentiation allows the nozzle to simultaneously prevent clogging and minimize material loss.
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 device effectively minimizes material loss and ensures reliable delivery of bone substitute material with high viscosity, allowing for precise application close to the target site with reduced material waste, improving the handling and application process.
Implementation Method 1
several drainage openings are arranged around the injection opening... allowing excess fluid to be ejected through these openings
Implementation Method 2
The sealing piston is a single-piece, rubber-elastic and flexible element
Data Source
AI summary
An application device for bone substitute material is disclosed. A cylinder contains a piston rod having an elastically deformable piston. The cylinder is closed via an attachment, through which a wetting liquid phase can be inserted via an injection opening. After a period of time, the wetted bone substitute material is compressed, with excess liquid phase being pressed out through drainage openings. Thereafter, the attachment can be removed and if applicable discharging takes place through a curved discharge nozzle, with the piston being able to adapt itself to the curvature with the benefit of total emptying of the device.