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Volunteer Case Series of a New Telemetric Sensor for Blood Detection in the Upper Gastrointestinal Tract: The HemoPill

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Abstract

Background

An acute upper gastrointestinal bleeding event is an emergency situation which requires immediate endoscopic assessment and treatment. A new telemetric real-time intracorporeal bleeding sensor can help in the timely diagnosis of an acute upper gastrointestinal bleeding event: The sensor capsule, HemoPill, is swallowed by the patient if gastrointestinal bleeding is suspected. Information about the bleeding status is displayed by telemetric communication of the capsule with an extracorporeal receiver. This is the first evaluation of the HemoPill to detect blood in the upper human gastrointestinal tract.

Methods

A voluntary test person ate a defined meal with or without the adjunct of his own blood for a total of eight times and afterward swallowed the sensor capsule. The collected spectrometric receiver data were analyzed to assess whether the sensor system was capable of detecting blood and to evaluate the effect of stomach content as an artifact.

Results

With its optical sensor, the HemoPill was able to reliably indicate the ingested blood in the stomach. The data transmission from the swallowed sensor capsule to the extracorporeal receiver was achieved consistently. The evaluation of diverse concentrations of ingested blood and the respective sensor signals led to an exponential relationship of these variables. This relationship allows to define thresholds for categories indicating the likelihood of blood presence in the gastrointestinal tract.

Conclusions

The HemoPill is a valuable tool to detect an acute upper gastrointestinal bleeding event without the need of endoscopy.

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Funding

Ovesco Endoscopy AG received funding from the European Commission: Project title “Versatile Endoscopic Capsule for gastrointestinal TumOr Recognition and therapy Contract” (Grant No. 033970) and the German Federal Ministry BMWI: Project title “Miniaturisierte Funkschnittstelle zur zuverlässigen drahtlosen Datenübertragung aus dem menschlichen Körper” (Grant No. EP120781).

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Authors and Affiliations

  1. Ovesco Endoscopy AG, Dorfackerstr. 26, 72074, Tuebingen, Germany

    Sebastian Schostek, Melanie Zimmermann, Jan Keller, Mario Fode, Michael Melbert, Marc O. Schurr & Thomas Gottwald

  2. IHCI Institute, Steinbeis University Berlin, Tuebingen, Germany

    Marc O. Schurr

  3. Medical Faculty, University of Tübingen, Tübingen, Germany

    Thomas Gottwald

  4. St. Anna Klinik and Proctological Institute Stuttgart, Stuttgart, Germany

    Ruediger L. Prosst

Authors
  1. Sebastian Schostek
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  2. Melanie Zimmermann
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  3. Jan Keller
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  4. Mario Fode
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  5. Michael Melbert
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  6. Marc O. Schurr
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  7. Thomas Gottwald
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  8. Ruediger L. Prosst
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Corresponding author

Correspondence to Sebastian Schostek.

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Conflict of interest

Sebastian Schostek, Thomas Gottwald, and Marc O. Schurr hold management positions for Ovesco Endoscopy AG. Melanie Zimmermann, Jan Keller, Mario Fode, Michael Melbert are employees of Ovesco Endoscopy AG. Ruediger L. Prosst has no conflict of interest.

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Schostek, S., Zimmermann, M., Keller, J. et al. Volunteer Case Series of a New Telemetric Sensor for Blood Detection in the Upper Gastrointestinal Tract: The HemoPill. Dig Dis Sci 61, 2956–2962 (2016). https://doi.org/10.1007/s10620-016-4226-y

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  • DOI: https://doi.org/10.1007/s10620-016-4226-y

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