Dental CT X-ray Generator Sensor Nesting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional CT radiography devices for dental clinics require a large space for installation due to the wide turning radius of the X-ray generator and sensor, and the design and manufacturing of the supporting structures are complex, leading to increased effort and cost.
Innovation Solution
The X-ray generator and sensor are positioned to face each other with the subject interposed between them within a predetermined angular range, allowing for reciprocal movement along tracks that maintain a constant distance or ratio, and are driven by rotary and linear parts to reduce the space required for rotation, simplifying the design and installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the X-ray generator and sensor rotate with a wide turning radius to capture radiographs at various angles, then the scanning coverage and image quality are improved, but the space required for device installation increases significantly
Solution Approach 1:
The X-ray generator and sensor are positioned nested within each other's turning paths, with the generator at the outer radius and sensor at the inner radius. This nesting arrangement allows both components to share the same rotational space, capturing radiographs at multiple angles without requiring proportionally increased installation space.
Solution Approach 2:
The patent transitions from a conventional planar rotation arrangement to a three-dimensional nested circular arrangement. By utilizing the radial dimension and positioning components at different radii from the rotation axis, the system achieves comprehensive angular coverage while minimizing the footprint area required for installation.
2Stability of the object's composition
If the supporting part of the rotation arm is designed to hold the weight of the X-ray generator, sensor, and rotation arm, then the structural stability is improved, but the design and manufacturing complexity increases
Solution Approach 1:
The supporting part is designed to simultaneously perform multiple functions: it holds the X-ray generator, supports the rotation arm, and provides the rotational movement mechanism. By merging these separate functions into a single integrated supporting structure, the design complexity is reduced while maintaining structural stability.
Solution Approach 2:
The supporting part is designed as a multi-functional component that serves as both a structural support element and a rotational actuation mechanism. This universal design allows the same structure to provide mechanical support, enable rotation, and hold imaging components, thereby simplifying the overall device architecture.
3Ease of operation
If the center of gravity of the rotation arm is located outside of the column, then the rotational movement is facilitated, but additional effort and cost are required for designing the column and base support
Solution Approach 1:
The patent positions the X-ray generator and sensor in a nested arrangement where their combined center of gravity creates a counterbalancing effect. This counterweight arrangement facilitates rotational movement by reducing the torque required to initiate and maintain rotation, while minimizing the structural demands on the column and base support.
Solution Approach 2:
The nested positioning of the X-ray generator and sensor creates a balanced gravitational field during rotation, where the center of gravity remains relatively stable throughout the rotational range. This equipotential arrangement reduces the variation in torque requirements during rotation, simplifying the base support design.
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
This configuration reduces the space needed for the device, simplifies the design and production, and enhances mechanical reliability by allowing proper operation within a smaller space while maintaining effective scanning capabilities.
Implementation Method 1
an X-ray generator is provided on a first side of a rotation arm... an X-ray sensor is installed to face the X-ray generator. The patient is positioned between the X-ray generator and the X-ray sensor... The X-rays transmitted through the body part generate different electrical signals according to a damping ratio of the X-rays at each point of the body part being captured
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Disclosed is a dental X-ray CT photographic device. In order to resolve this issue, the CT photographic device according to the present invention comprises: a column; a first facing part which is disposed oriented towards an object to be examined on one side of the column, and comprises one or other of an X-ray generator and an X-ray sensor; a rotational arm coupled in such a way as to be able to rotate through at least a predetermined angular range with respect to the column; and a second facing part which is disposed on the rotating arm, on the far side from the column, facing the first facing part with the object to be examined placed in between, and which comprises the other of an X-ray generator and an X-ray sensor.