Supplemental device for attachment to an injection device for recording and displaying a dose value set by the user using optical character recognition (OCR)
First Claim
1. A supplemental device for attachment to an injection device, the supplemental device comprising:
- an imaging sensor configured to capture an image of one or more visible numbers displayed on a moveable component of the injection device;
a processor; and
a computer-readable memory storing instructions executable by the processor to;
receive data representing an image;
determine a position of at least one visible number in the image by determining a boundaries of each visible number;
select one of the visible numbers to be identified;
perform a pattern matching process to identify the value of the selected visible number; and
determine a dose dialed into the injection device using the determined position of the selected one of the at least one visible number in the image by;
determining a position offset of the selected visible number from the center of the image; and
applying a weighting function based on the position offset to the value of the selected visible number.
1 Assignment
0 Petitions
Accused Products
Abstract
A supplemental device (2) for attachment to a pen-type drug injection device, the supplemental device comprising an optical sensor array or camera (25) configured to capture an image of one or more numbers representing dose values on a dose dial sleeve of the injection device, and a processor (24) and memory (240,241) arrangement configured to run an algorithm to receive image data from the sensor/camera and extract the dialed dose value from said image via optical character recognition (OCR). The algorithm is able to determine the set dose value which is at the centre of the image (902), also if the dose scale only comprises integer values in steps of two (see FIG. 9).
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Citations
21 Claims
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1. A supplemental device for attachment to an injection device, the supplemental device comprising:
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an imaging sensor configured to capture an image of one or more visible numbers displayed on a moveable component of the injection device; a processor; and a computer-readable memory storing instructions executable by the processor to; receive data representing an image; determine a position of at least one visible number in the image by determining a boundaries of each visible number; select one of the visible numbers to be identified; perform a pattern matching process to identify the value of the selected visible number; and determine a dose dialed into the injection device using the determined position of the selected one of the at least one visible number in the image by; determining a position offset of the selected visible number from the center of the image; and applying a weighting function based on the position offset to the value of the selected visible number. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A system comprising:
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a supplemental device for attachment to an injection device, the supplemental device comprising; an imaging sensor configured to capture an image of one or more numbers displayed on a moveable component of the injection device; a processor; a computer-readable memory storing instructions executable by the processor to; receive data representing an image; determine the position of at least one number in the image by determining the boundaries of each visible number; select one of the visible numbers to be identified; perform a pattern matching process to identify the value of the selected number; and determine a dose dialed into the injection device using the determined position of the selected one of the at least one visible number in the image by; determining a position offset of the selected visible number from the center of the image; and applying a weighting function based on the position offset to the value of the selected visible number; and an injection device having a moveable component with numbers present thereon. - View Dependent Claims (20)
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21. A method of determining a dose dialed into an injection device using a supplemental device for attachment to an injection device, the method comprising:
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receiving a captured image of one or more visible numbers present on a moveable component of the injection device; receiving data representing an image; determining a position of at least one visible number in the image by determining a boundaries of each visible number; selecting one of the visible numbers to be identified; performing a pattern matching process to identify a value of the selected visible number; and determining a dose dialled into the injection device using the determined position of the selected one of the at least one visible number in the image by; determining a position offset of the selected visible number from the center of the image; and applying a weighting function based on the position offset to the value of the selected visible number.
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Specification