System and method for changing transmission from an in vivo sensing device

• US 6,934,573 B1
• Filed: 07/23/2002
• Issued: 08/23/2005
• Est. Priority Date: 07/23/2001
• Status: Active Grant

• Current Assignee: Given Imaging Limited (Medtronic Plc)
• Original Assignee: Given Imaging Limited (Medtronic Plc)
• Inventors: Erlich, Baruch, Glukhovsky, Arkady
• Primary Examiner(s): ROBINSON, DANIEL LEON
• Application Number:
  US10/200,548
• Time in Patent Office: 1,127 Days
• Field of Search: 600/407, 600/410, 600/437, 600/372, 607/1, 607/2, 250/363.01, 250/363.02, 250/363.03, 250/363.04, 606/1, 606/2
• US Class Current: 600/407
• CPC Class Codes: A61B 1/00016 using wireless means
• CPC Class Codes: A61B 1/00036 Means for power saving, e.g. sleeping mode
• CPC Class Codes: A61B 1/041 Capsule endoscopes for imaging
• CPC Class Codes: A61B 2017/00137 Details of operation mode
• CPC Class Codes: A61B 2560/0209 adapted for power saving
• CPC Class Codes: A61B 5/0031 Implanted circuitry
• CPC Class Codes: A61B 5/01 Measuring temperature of body parts ; Diagnostic temperature sensing, e.g. for malignant or inflamed tissue clinical contact thermometers G01K13/20
• CPC Class Codes: A61B 5/073 Intestinal transmitters
• CPC Class Codes: A61B 5/14539 for measuring pH
• CPC Class Codes: H04W 52/06 TPC algorithms
• CPC Class Codes: H04W 52/08 Closed loop power control
• CPC Class Codes: H04W 52/10 Open loop power control

Abstract

A device, system and method enables obtaining data such as in vivo images from within body lumens or cavities, such as images of the gastrointestinal (GI) tract. A device may include an imaging system and a radio frequency (RF) transmitter for transmitting signals from an imaging device to a receiving system. The signal strength of the transmitter may be varied or changed to account for, for example, the amount of signal attenuation resulting from body tissues.

Claims

1. A system for obtaining in vivo data, the system comprising:

a swallowable capsule; and

a receiving unit;

said swallowable capsule comprising at least one in vivo sensor, at least one signal transmitter and at least one power level receiver to receive a command to adjust the power level of said at least one signal transmitter;

and said receiving unit comprising at least one receiver and at least one power level transmitter.

2. The system according to claim 1 wherein the power level transmitter is configured to transmit data regarding the power level of a signal transmitted from the signal transmitter and wherein the power level receiver is configured to receive a signal from the power level transmitter.

3. The system according to claim 1 wherein the swallowable capsule further comprises a processing unit.

4. The system according to claim 3 wherein the processing unit is configured to process power level data received from the power level transmitter.

5. The system according to claim 3 wherein the processing unit is configured to command the signal transmitter to change a transmission power level.

6. The system according to claim 1 wherein the signal transmitter includes an RF transmitter.

7. The system according to claim 1 wherein the power level transmitter includes an RF transmitter.

8. The system according to claim 1 wherein the receiving unit comprises at least one antenna.

9. The system according to claim 1 wherein the receiver comprises a plurality of antennas.

10. The system according to claim 9 wherein the receiving unit is configured to determine which antenna is receiving the strongest signal and is configured to sample transmission from the antenna receiving the strongest signal for data regarding power level of a signal transmitted from the signal transmitter.

11. The system according to claim 1 wherein the receiving unit is portable.

12. The system according to claim 1 wherein at least one in vivo sensor includes an image sensor.

13. The system according to claim 12 wherein the swallowable capsule further comprises at least one illumination source.

14. The system according to claim 1 wherein the at least one in vivo sensor is selected from a group consisting of:

a temperature sensor, a pH meter, and a pressure sensor.

15. The system according to claim 1 wherein the swallowable capsule is an ingestible imaging capsule.

16. The system according to claim 1 wherein the power level receiver includes an RF receiver.

17. A method for changing data transmission from a swallowable capsule, the method comprising the steps of:

obtaining a data transmission from within a body;

in response to the transmission, transmitting a command to adjust a power level of data transmission and changing a data transmission strength.

18. The method of claim 17 comprising comparing the data transmission strength to a threshold value, wherein the change is according to a comparison.

19. The method according to claim 17 wherein the step of obtaining a data transmission comprises determining signal strength.

20. The method according to claim 17 wherein the step of obtaining a data transmission comprises measuring the signal strength of a blank portion of the transmission.

21. The method according to claim 17 wherein the step of changing comprises raising or lowering the transmission strength.

22. The method according to claim 17 wherein the step of changing comprises raising or lowering the transmission strength by a predetermined value.

23. The method according to claim 17 wherein the step of obtaining a data transmission comprises obtaining a sample of a data transmission and wherein the step of changing a transmission strength comprises changing the strength of the same transmission.

24. The method according to claim 17 wherein the step of obtaining a data transmission comprises obtaining a sample of a data transmission and wherein the step of changing a transmission strength comprises changing the strength of a subsequent transmission.

25. The method according to claim 17, wherein the data transmission includes image data.

26. The method of claim 17, wherein the swallowable capsule is an imaging capsule.

27. The method according to claim 17 wherein the step of determining the transmission strength comprises the steps of:

determining a strongest signal source; and

obtaining a data transmission from the strongest signal source.

28. A method for controlling image data transmission from a swallowable capsule, the method comprising:

receiving a data transmission having a signal strength;

evaluating the signal strength;

transmitting a command to adjust a power level of data transmission; and

altering a capsule data transmission power level.

29. A method for changing image data transmission from a swallowable capsule, the method comprising the steps of:

obtaining a sample of a data transmission of image data from within a body to determine the transmission strength;

comparing the data transmission strength to a threshold value;

transmitting a command to adjust a power level of data transmission; and

changing a data transmission strength according to the comparison.

30. The method according to claim 29 comprising initial steps of:

obtaining images from a body lumen; and

transmitting image data.

31. The method according to claim 29 wherein the step of obtaining images is performed by an ingestible imaging capsule.