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terminated after the concept feasibility was succesfully proved, no safety issues
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The purpose of this single-centre, open label prospective study is to investigate a novel ocular mini insert (OMI) for detection of blood glucose levels in human subjects. First, the optimal technical parameters for measurement are determined on healthy subjects. Secondly, performance measurements follow investigating relationship between OMI signal and blood glucose in diabetes patients during short sessions with oral glucose tolerace test.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Cohort - Healthy subjects | Experimental | 2 healthy subjects will test OMI and Photometer for a period of up to 5 months: with sub-conjunctivaly implanted OMI participating on in-clinic sessions to optimize and adjust the measurement system (photometer). |
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| Cohort - Diabetic patients | Experimental | 8 diabetic patients will test OMI and Photometer: wearing sub-conjunctivaly implanted OMI for a period of up to 10 months and participating on up to 20 in-clinic sessions with blood glucose challenge to measure the performance of the system. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| OMI and Photometer | Device | A glucose sensitive ocular mini insert (OMI) is placed sub-conjunctivaly. When exited by photometer the glucose concentration is measured. |
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| Measure | Description | Time Frame |
|---|---|---|
| Correlation between OMI signal and blood glucose | Correlation between OMI fluorescence readings of subconjunctival interstitial fluid glucose concentration and capillary blood glucose level | 1-2 times weekly for 10 weeks after insertion |
| Adverse Events Reporting | wound healing and conjunctival hyperaemia | at each visit, up to 10 months |
| Measure | Description | Time Frame |
|---|---|---|
| Sensitivity and signal to noise ratio of the photometer | 1-2 times weekly for 10 weeks after insertion | |
| Long term stability of insert | signal drift and stability of measurement | 1-2 times weekly for 10 weeks after insertion |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Holger Mietz, Prof. Dr. | 63739 Aschaffenburg, Germany | Principal Investigator |
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| ID | Term |
|---|---|
| D003920 | Diabetes Mellitus |
| ID | Term |
|---|---|
| D044882 | Glucose Metabolism Disorders |
| D008659 | Metabolic Diseases |
| D009750 | Nutritional and Metabolic Diseases |
| D004700 | Endocrine System Diseases |
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| Targeting of measurement beam | 1-2 times weekly for 10 weeks after insertion |
| Subjective impressions | subjecs has to answer a questionnaire | 10 months |
| Lag time | evaluation between device readings and blood glucose concentration | 1-2 times weekly for 10 weeks after insertion |