Eye Applicator with Rotatable Segment for Precise Corneal Injection
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Solution Overview
Problem
Current methods for injecting medical or diagnostic liquids into eye tissues, particularly corneal tissue, require multiple incisions and are prone to inaccuracies even for skilled surgeons, increasing complication risks.
Innovation Solution
An eye applicator with a main body and embedded injector segments, featuring replaceable syringe needles and stirrup holders, allows for precise injection and delivery of substances through a single incision, with options for external or internal substance access and a design that minimizes inaccuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a common syringe is used for injection into eye tissues, then the device is simple and easy to operate, but the injection accuracy is low and multiple incisions are required
Solution Approach 1:
The applicator is divided into a main body and multiple replaceable injector segments. Each segment contains a needle holder and canal structure, allowing the device to be customized for different injection needs while maintaining overall system integration and precision.
Solution Approach 2:
The main body of the applicator is designed as a universal platform that can accommodate different types of injector segments and needle configurations. This allows a single device to perform multiple injection functions with high precision across different eye tissue areas.
2Area of stationary object
If multiple incisions are made for substance injection into larger areas, then the coverage area is increased, but the complication risk increases due to multiple access points
Solution Approach 1:
The applicator transitions from single-point injection to multi-point simultaneous injection by incorporating multiple needles arranged in specific patterns (linear, radial, or grid). This allows coverage of larger corneal areas through a single incision site, reducing the number of separate access points required.
Solution Approach 2:
Multiple needle holders are nested within the main body structure, with canals interconnected to the substance source. This nested arrangement allows multiple injection points to be delivered through a single applicator insertion, reducing the number of external incisions needed.
3Adaptability or versatility
If replaceable needle holders are used in the applicator, then the adaptability for different needles is improved, but the device complexity increases
Solution Approach 1:
Needle holders are pre-assembled with thumbs and curved grooves for secure attachment. The preliminary preparation of these components allows for quick and reliable replacement during surgery without requiring complex assembly procedures, balancing versatility with operational simplicity.
4Ease of operation
If the main body is made of transparent material with ribbed holders, then the visibility and grip are improved, but the manufacturing complexity increases
Solution Approach 1:
The main body is made of transparent material specifically in regions where visibility is needed for precise alignment and insertion. Ribbed holders are added only in grip areas to enhance handling. This localized application of material properties and surface features optimizes performance while minimizing overall manufacturing complexity.
Data Source
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AI summary
The eye applicator for injection application of substance, especially of medical or diagnostic liquid substance or liquid to refraction alter, into eye tissue, especially in corneal tissue. The applicator comprises of the hollow main body, in which there is directly or by means of a segment one or more injectors embedded, especially one or more application needles. The main body can well be of the shape of a cone or cylindrical ring with at least one side cutout, together with the fact that there is a segment in the form of a hollow body with a lateral area corresponding to the hollow formatively and with at least one frontal base with an opening. The segment is rotatively embedded in the hollow of the main body. Inside the segment there are at least two movingly embedded replaceable stirrup needle holders holding on the syringe needles on their curved frontal areas and being equipped with thumbs nesting in curved grooves on the inner side of the segment base. The main body of the applicator can be also of the shape of a disc, which is directly equipped with openings for the needle insertion.