Biocompatible 3D Object Coating via Dynamic Relative Movement
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Solution Overview
Problem
Existing techniques for producing biocompatible three-dimensional objects with complex shapes, such as concave or convex heart patches and ellipsoidal cardiac chambers, are limited by their inability to handle surfaces with varying radii of curvature and require manual monitoring, which restricts precision and applicability to simple, axisymmetric shapes.
Innovation Solution
An apparatus with a delivery unit and handling unit providing relative movement in at least 3 degrees of freedom, allowing precise deposition and removal of biocompatible fluid substances on a support body, along with a suction and blowing unit for uniform coating, and optional actuators or an anthropomorphic robot for enhanced precision, enabling the creation of complex shapes with high dimensional accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional spraying techniques are used to deposit biocompatible fluid substances, then the production of simple axisymmetric membranes is achieved, but the ability to produce complex three-dimensional shapes with varying surface curvatures is lost
Solution Approach 1:
The support body is made rotatable about an axis, transforming the static spraying process into a dynamic one. This rotation enables the deposition of coating material on complex three-dimensional surfaces with varying curvatures, while the system maintains precise control over the coating process through coordinated movement of the support body and spray nozzle
Solution Approach 2:
The apparatus is designed to handle both simple axisymmetric shapes and complex three-dimensional shapes with varying surface curvatures using the same spraying mechanism. The support body can be configured in different geometries (cylindrical, conical, or custom shapes) while maintaining the same fundamental deposition process, making the system universally applicable to multiple product types
2Manufacturing precision
If manual monitoring is used in the spraying process, then operational simplicity is maintained, but precision and automation are reduced
Solution Approach 1:
Sensors are integrated into the apparatus to detect parameters such as coating thickness, support body position, and spray material flow rate. This feedback information is used to automatically adjust the spraying process, ensuring consistent dimensional accuracy and coating quality without requiring manual monitoring, thereby achieving high precision through automated closed-loop control
3Manufacturing precision
If the support body is rotated during spraying, then uniform coating on axisymmetric shapes is achieved, but the ability to handle surfaces with varying radii of curvature is lost
Solution Approach 1:
The support body rotation is implemented as a dynamic feature that can accommodate different geometries. The system maintains rotational movement capability while allowing the support body to assume various shapes (cylindrical, conical, or custom three-dimensional forms), enabling uniform coating deposition across surfaces with varying radii of curvature through coordinated rotation and spray nozzle positioning
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
Enables the production of biocompatible three-dimensional objects with complex shapes and varying surface curvatures, achieving high precision and automated processing, suitable for anatomical parts with intricate designs.
Implementation Method 1
a suction and blowing unit is also provided configured to provide a suction and blowing current arranged to remove from the support body any surplus particles of the biocompatible fluid substance supplied by the or each delivery unit
Data Source
AI summary
A method for making a biocompatible three-dimensional object includes delivering, using a delivery system, a biocompatible fluid substance comprising a plurality of particles towards a support body having a matrix surface to obtain a coating layer of predetermined thickness configured for coating the matrix surface, generating a relative movement with at least three degrees of freedom between the support body and the delivery system, and removing from the support body any surplus particles of the biocompatible fluid substance to make uniform the predetermined thickness of the coating layer. The support body is coated with the biocompatible fluid substance to obtain a three-dimensional object having an object surface corresponding to the matrix surface.