In vivo device and method for collecting oximetry data

• US 7,460,896 B2
• Filed: 07/29/2004
• Issued: 12/02/2008
• Est. Priority Date: 07/29/2003
• Status: Expired due to Fees

• Current Assignee: Given Imaging Limited (Medtronic Plc)
• Original Assignee: Given Imaging Limited (Medtronic Plc)
• Inventors: Iddan, Gavriel J.
• Primary Examiner(s): WINAKUR, ERIC FRANK
• Application Number:
  US10/901,177
• Publication Number:
  US 20050027178A1
• Time in Patent Office: 1,587 Days
• Field of Search: 600/322, 600/323, 600/339, 600/340, 600/342, 600/343
• US Class Current: 600/339
• CPC Class Codes: A61B 1/041 Capsule endoscopes for imaging
• CPC Class Codes: A61B 5/0031 Implanted circuitry
• CPC Class Codes: A61B 5/1459 invasive, e.g. introduced into the body by a catheter A61B5/1464 takes precedence

Abstract

An in vivo device and a method for collecting and measuring oximetry data in a body lumen, such as using a swallowable capsule. The in vivo device may include instruments for collecting oximetry data, for example an illuminator and an oximetry data detector.

Claims

1. An autonomous in-vivo device comprising a unit to measure oxygenation of hemoglobin in a blood stream, said device when inside a body not including any physical connection to an additional device, the unit comprising:

at least two cavities limiting backscatter or sidescatter light access, wherein a first of said at least two cavities includes either an illumination source or a detector recessed therein and a second of said at least two cavities includes the other of said illumination source or said detector recessed therein,

said unit arranged such that light emitted by the illumination source is detectable by the detector when said device is inside a body.

2. The device according to claim 1, comprising a filter to filter sidescatter light.

3. The device according to claim 1, comprising an oximetry data detector.

4. The device according to claim 1, further comprising an optical dome behind which are situated an imager, an optical element and an illumination device to illuminate in vivo sites.

5. The device according to claim 1,. comprising a wireless transmitter.

6. The device according to claim 1, comprising an instrument to collect oximetry data.

7. The device according to claim 1, wherein said cavity is recessed into one side of the device.

8. The device according to claim 1, wherein the illuminator and detector are arranged for obtaining reflectance measurements.

9. The device according to claim 1, wherein said at least one cavity comprises a non-reflective surface to absorb backscatter or sidescatter light.

10. The device according to claim 1, wherein said in-vivo device is a capsule.

11. A system for measuring the oxygenation of hemoglobin in a blood stream, the system comprising:

an autonomous in vivo device that, when inside a body does not include any physical connection to an additional device, comprising

an instrument to collect oximetry data;

at least two cavities limiting backscatter or sidescatter light access, wherein a first of said at least two cavities includes either an illumination source or a detector recessed therein and a second of said at least two cavities includes the other of said illumination source or said detector recessed therein,

said unit arranged such that light emitted by the illumination source is detectable by the detector when said device is inside a body; and

an external receiving unit to receive transmitted information.

12. The system according to claim 11, wherein the receiving unit includes at least a component selected from the group consisting of:

a recorder unit, a storage unit and a workstation.

13. The system according to claim 11, comprising a controller to calculate oximetric readings from diffused light received by the in-vivo device.

14. A method of in vivo measuring of oximetry, the method comprising:

inserting an autonomous in vivo device into a body lumen, said device when inside the body lumen not including any physical connection to an additional device;

illuminating tissue of said body lumen with an illuminator in the device, the illuminator recessed in a cavity limiting backscatter or sidescatter light access;

detecting light diffused from a tissue of said body lumen by a detector in the device, the detector recessed in a cavity limiting backscatter or sidescatter light access; and

calculating oximetric readings based on the detected diffused light.

15. The method according to claim 14, comprising illuminating areas of the body lumen using different wavelengths of the light spectrum.

16. The method according to claim 14, comprising filtering sidescatter light.

17. The method according to claim 14, comprising transmitting said measurements to a receiving unit.

18. The method according to claim 14, comprising collecting and transmitting imaging information.