Intravitreal Injection Device with Limbus Distance Indicator
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Solution Overview
Problem
The intravitreal injection procedure requires multiple instruments and skilled personnel due to its complexity, which can be a challenge in resource-limited settings and may complicate the administration of treatments for eye diseases.
Innovation Solution
A device with a handle and a contact portion that includes a distance indicator to mark a pre-determined injection site on the eye, reducing the need for multiple instruments by allowing precise alignment with the limbus for accurate injection site identification, and featuring a design that grips the conjunctiva without tearing, potentially replacing several instruments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple instruments are used during intravitreal injection procedure, then the procedure can be performed with adequate functionality, but the device complexity and number of instruments required increases
Solution Approach 1:
The patent combines multiple separate instruments into a single integrated device. The device merges the speculum function (to hold the eye open), the calliper function (to measure and mark the injection site), and the syringe holder function into one unified instrument that can be used sequentially during the intravitreal injection procedure
Solution Approach 2:
The single device performs multiple functions: it acts as a speculum to maintain eye opening, serves as a measuring instrument with callipers to locate the injection site at the correct distance from the limbus, and provides a platform for syringe insertion and injection administration
2Measurement precision
If multiple skilled instruments are used, then accurate injection can be achieved, but the skill level required for the operator increases
Solution Approach 1:
The device incorporates pre-calibrated callipers and distance markings that automatically provide the correct measurement from the limbus to the injection site. The pre-determined distance markings eliminate the need for the operator to perform complex measurements and calculations, reducing the skill level required while maintaining precision
3Reliability
If multiple instruments requiring sterilization are used, then the procedure can be completed, but the time and resources required for sterilization increases
Solution Approach 1:
By consolidating multiple separate instruments into a single integrated device, the number of items requiring sterilization is reduced from three or more (speculum, forcep, callipers) to one, thereby reducing the total sterilization time and resource requirements while maintaining sterilization compliance
Data Source
AI summary
A device for use during an intravitreal injection procedure, the device including: a main body portion with a handle at one end for holding the device; and, a contact portion at the other end for contacting the surface of an eye; wherein the contact portion includes a distance indicator for indicating a pre-determined distance from a reference point on the eye.