Medical Handpiece Shared Electric Line for Signal and Power
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Solution Overview
Problem
Medical and dental handpieces face challenges in optimizing the installation of rotational speed measuring devices due to limited space and the need for separate electric connections for these devices and lighting systems, which complicates the design and utilization of available space.
Innovation Solution
A medical or dental handpiece design that incorporates a shared electric line for both the rotational speed measuring device and the lighting device, utilizing an inductive rotational speed measuring device with a magnetic element and measuring coil, and a lighting system powered by a constant current or voltage source, allowing simultaneous transmission of power and measurement signals over a single line, thereby simplifying the design and optimizing space usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate electric lines are provided for the rotational speed measuring device and the lighting device, then the reliability of signal transmission is improved, but the device complexity and space requirements increase
Solution Approach 1:
The patent combines the power supply line and the rotational speed measurement signal line into a single shared electric line. The four-pole connector provides common connections where the outer conductors serve as power supply lines and the inner conductors serve as measurement signal lines, eliminating the need for completely separate wiring systems while maintaining functional reliability through proper signal shielding and grounding.
Solution Approach 2:
The shared electric line serves multiple functions simultaneously: it provides both electric power supply to the lighting device and rotational speed measurement signals from the measuring device. The four-pole connector structure enables this multi-functionality by allowing different conductors within the same connector to serve different purposes (power and signal transmission) along the same physical path.
2Measurement precision
If separate electric connections are made for the rotational speed measuring device and the lighting device, then the measurement precision is improved, but the space available in the handpiece is reduced
Solution Approach 1:
The patent merges the separate electric connections for power supply and measurement signals into a single shared electric line structure. The four-pole connector allows both functions to coexist in the same physical space by utilizing different conductors within the same connector housing, thereby preserving measurement precision while reducing the overall space required for wiring in the handpiece.
3Ease of manufacture
If a shared electric line is used for both power supply and measurement signals, then the ease of manufacture is improved, but the difficulty of detecting and measuring signals increases
Solution Approach 1:
The patent simplifies manufacturing by using a single four-pole connector for both power supply and measurement signals, reducing the number of assembly steps and components. The connector's internal structure provides automatic signal separation through dedicated inner and outer conductors, making signal detection and measurement straightforward despite the shared physical line.
Solution Approach 2:
The four-pole connector acts as an intermediary structure that facilitates both power supply and measurement signal transmission through its multi-conductor design. The connector's internal arrangement of inner and outer conductors automatically separates and routes different signal types to their respective destinations, reducing the complexity of signal detection and measurement at the device level.
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 solution eliminates the need for separate connections, effectively utilizes available space, and simplifies the handpiece design by enabling simultaneous transmission of power and measurement signals, ensuring efficient operation and improved design in the coupling region.
Implementation Method 1
The inductive rotational speed measuring device or the inductive rotational speed sensor preferably comprises a magnetic element and at least one measuring coil, which can be moved relative to one another
Implementation Method 2
Preferably the inductive rotational speed measuring device additionally comprises at least one soft magnetic element to concentrate the magnetic field of the magnetic element
Implementation Method 3
a lighting device that can be supplied with electric power for emitting radiation, in particular visible light, onto a treatment site
Data Source
AI summary
Embodiments of a medical or dental handpiece are disclosed. A medical or dental handpiece may include a rotatable drive element to drive a tool that can be connected to the handpiece, a rotational speed measuring device which is designed to generate a variable electric rotational speed measurement signal assigned to the rotational speed of the drive element, a lighting device that can be supplied with electric power for emitting radiation, in particular visible light, onto a treatment site, and at least one shared electric line, which is provided for transmitting electric power to the illumination device and the rotational speed measurement signal of the rotational speed measurement device. Further a corresponding method for the operation of a medical or dental handpiece is disclosed.