Air Blowing Unit Preliminary Puffing Mode for Ophthalmologic Apparatus
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Solution Overview
Problem
Ophthalmologic apparatuses that measure intraocular pressure by blowing air to the cornea often suffer from staining of the air blowing unit due to secretions, leading to maintenance challenges and reduced efficiency.
Innovation Solution
Incorporating a preliminary puffing mode in the control unit that puffs air when not measuring intraocular pressure to clear secretions from the air blowing unit, with automatic and manual modes for execution based on set conditions, ensuring effective strain reduction and reduced cleaning burden.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If air is blown to the cornea for intraocular pressure measurement, then measurement function is achieved, but secretions scatter and stain the air blowing unit
Solution Approach 1:
The control unit executes preliminary puffing before intraocular pressure measurement to clear secretions from the air blowing unit. This preliminary action prevents secretions from staining the air blowing unit during the actual measurement, thereby resolving the contradiction between achieving reliable measurement and preventing harmful staining effects.
2Productivity
If air blowing unit is used continuously for measurement, then productivity is maintained, but secretions accumulate and increase maintenance burden
Solution Approach 1:
The control unit periodically executes preliminary puffing at predetermined intervals during continuous operation. This periodic cleaning action removes accumulated secretions from the air blowing unit without stopping measurement operations, thereby maintaining productivity while reducing maintenance burden through automated periodic cleaning.
3Object-generated harmful factors
If preliminary puffing is executed frequently, then inner-stain reduction is achieved, but measurement time is consumed
Solution Approach 1:
The control unit adjusts the puffing pressure and duration parameters during preliminary puffing to optimize cleaning effectiveness while minimizing time consumption. By carefully controlling these parameters, the system achieves effective stain reduction without excessively extending measurement time, resolving the contradiction between cleaning effectiveness and time efficiency.
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 preliminary puffing mode effectively reduces internal staining of the air blowing unit, simplifies maintenance, and ensures accurate intraocular pressure measurements by clearing secretions before and after measurements, while minimizing noise and discomfort.
Implementation Method 1
an air blowing unit that puffs air to the cornea
Implementation Method 2
a preliminary puffing mode in which preliminary puffing is executed such that the air blowing unit puffs the air in non-measurement of the value of intraocular pressure
Data Source
AI summary
An ophthalmologic apparatus that measures a value of intraocular pressure of an examinee's eye, based on a state of deformation of a cornea in applanation due to air blowing includes an air blowing unit that puffs air to the cornea and a control unit that controls an operation of the air blowing unit, wherein the control unit has a preliminary puffing mode in which preliminary puffing is executed such that the air blowing unit puffs the air in non-measurement of the value of intraocular pressure.