Eye Marker Device With Rotational Scale And Internal Weights
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Solution Overview
Problem
Current methods for marking the eye to correct astigmatism are inefficient due to the short-lived nature of ink marks from metal markers, which require immediate application and can be inaccurate due to patient positioning changes, disrupting surgical preparation workflows.
Innovation Solution
An eye marker device with a handle and marking head featuring pre-inked tips or a marking disk, internal weights for stability, and a rotational scale for precise alignment, allowing for accurate and long-lasting ink marks that can be applied before surgery, reducing the need for immediate marking and improving patient flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If metal markers with thin ink layer are used to mark the eye, then the marking process is simple and quick, but the ink marks are short-lived and must be placed immediately before surgery
Solution Approach 1:
The patent applies preliminary action by allowing ink marks to be placed on the eye surface well in advance of surgery (not immediately before), and maintaining their visibility through the action of tear film that prevents blinking off. This resolves the contradiction by performing the marking action earlier while ensuring the marks persist until surgery time.
2Measurement precision
If eye marking is done with patient in sitting position to avoid cyclotorsion errors, then marking accuracy is improved, but it disrupts the normal operating room prep sequence where patient lies down
Solution Approach 1:
The patent enables preliminary marking to be performed in advance of surgery when the patient is in the sitting position, allowing accurate astigmatic axis marking to be completed before the patient moves to the operating room and lies down for the normal surgical prep sequence. This resolves the contradiction by separating the marking action from the surgical procedure timing.
3Duration of action of moving object
If thick layer of ink is transferred to eye surface, then marks last longer, but the ink transfer mechanism becomes more complex and less reliable on wet ocular surface
Solution Approach 1:
The patent introduces the tear film as an intermediary substance between the marking device and the eye surface. The marking device transfers ink to the tear film, which then distributes the ink uniformly across the ocular surface. This intermediary mechanism ensures reliable and uniform ink transfer even on the wet eye surface, while the tear film's natural properties ensure the marks last throughout surgery.
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 provides durable, accurate ink marks that can be applied in advance of surgery, improving surgical preparation efficiency and reducing errors related to patient positioning changes, enhancing the overall accuracy and convenience of astigmatism treatment marking.
Implementation Method 1
The handle further includes a weight disposed within the handle for providing rotational stability to the eye marker device
Implementation Method 2
a rotational scale for providing a visual representation of the angle of the marking means relative to a predetermined origination point
Implementation Method 3
Ink from a sterile surgical marker is transferred from the ink marker to the projections of a sterilized metal marker. This thin layer of ink is then transferred to the eye by compressing the metal marker projections against the anesthetized cornea
Data Source
AI summary
The present invention provides methods and systems for an eye marker device that includes a handle having an interior cavity, a marking device coupled to the handle, and a rotational scale for providing a visual representation of the angle of the marking device relative to a predetermined origination point.