Syringe Nest Localization Using RFID and Holder-Based UDI Mapping
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Solution Overview
Problem
Existing methods for associating unique device identifiers (UDIs) of tagged syringes with their storage locations in a nest are inefficient, particularly when using two-dimensional codes, and do not allow for precise localization of syringes within the nest, which is necessary for automated filling processes.
Innovation Solution
A system and method that utilizes a conveyor system with holder numbers, a device reader, and a processor to associate each syringe's UDI with its location in the nest, enabling precise localization through RFID or two-dimensional code reading, and includes a transfer device to manage syringes based on successful or failed readings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If mass reading of syringes in a nest is performed using far field RFID antenna, then aggregation of syringe UDIs with nest UDI is achieved, but precise localization of each syringe within the nest is lost
Solution Approach 1:
The system segments the reading process into two distinct phases: first, mass reading of all syringes in the nest using far field RFID antenna for efficient aggregation; second, individual reading of each syringe at a controlled reading location using near field antenna for precise localization. This segmentation allows both high-level aggregation and detailed localization to be achieved without compromising either function.
Solution Approach 2:
The patent introduces an intermediary holding device with multiple holders that temporarily stores individual syringes at a reading location between the nest and the filling machine. This intermediary structure enables the system to first perform mass reading at the nest level, then present individual syringes for precise reading and localization, thereby resolving the contradiction between aggregation efficiency and location precision.
2Measurement precision
If individual reading of each syringe is performed at a reading location, then precise localization of syringes is achieved, but processing time and system complexity increase
Solution Approach 1:
The system performs preliminary mass reading of all syringes in the nest before individual processing. The controller stores the UDIs of all syringes in advance, so when individual syringes are later presented at the reading location, the system can quickly match them with pre-stored information, minimizing processing time while maintaining precise localization.
Solution Approach 2:
The patent replaces manual tracking and mechanical positioning systems with automated RFID reading and controller-based management. The near field antenna and controller work together to automatically identify, track, and localize syringes, eliminating the need for complex mechanical positioning systems and reducing overall processing time despite individual reading requirements.
3Adaptability or versatility
If two-dimensional code tags are used on syringes, then identification is achieved, but reading efficiency and precision are reduced compared to RFID tags
Solution Approach 1:
The system is designed with universal reading capability that can handle both RFID tags and two-dimensional code tags through the near field antenna and controller. The controller is programmed to recognize and process different tag types, allowing the system to maintain versatility while achieving high reading efficiency through automated individual reading at the controlled reading location.
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
Enables precise localization of syringes within a nest, facilitating efficient and automated filling processes by associating each syringe's UDI with its storage location, improving the control and accuracy of medicinal fluid dispensing.
Implementation Method 1
reading the tag comprises reading a unique device identifier (UDI) from the tag... a device reader positioned at a reading location along the conveying path, the device reader configured to perform a reading of a tag of each of the plurality of tagged medical injection devices
Data Source
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AI summary
Provided herein is a system for localizing tagged medical injection devices in a nest. The system includes a conveyor and associated holders that convey and retain injection devices along a conveying path. A device reads each tagged medical injection device to retrieve a unique device identifier (UDI) from the tag. A transfer device transfers each injection device from the conveyor system to a nest having a nest UDI associated therewith. A processor in the system receives a UDI for each injection device and, upon the injection device being transferred to the nest, associates the UDI with a location in the nest at which the injection device is stored and with the nest UDI, so as to register the location of each tagged medical injection device within the nest.