Medical instrument identification

• US 7,726,564 B2
• Filed: 02/01/2008
• Issued: 06/01/2010
• Est. Priority Date: 02/01/2007
• Status: Active Grant

• Current Assignee: Brainlab AG
• Original Assignee: Brainlab AG
• Inventors: Goldbach, Günter
• Primary Examiner(s): Le; Thien M.
• Assistant Examiner(s): TAYLOR, APRIL ALICIA
• Application Number:
  US12/024,128
• Publication Number:
  US 20080185430A1
• Time in Patent Office: 851 Days
• Field of Search: 235/385, 705/28, 600/427
• US Class Current: 235/385
• CPC Class Codes: A61B 2034/2055 Optical tracking systems
• CPC Class Codes: A61B 2034/2065 Tracking using image or pattern recognition
• CPC Class Codes: A61B 34/20 Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
• CPC Class Codes: A61B 90/36 Image-producing devices or illumination devices not otherwise provided for
• CPC Class Codes: A61B 90/90 Identification means for patients or instruments, e.g. tags
• CPC Class Codes: A61B 90/92 coded with colour
• CPC Class Codes: A61B 90/94 coded with symbols, e.g. text
• CPC Class Codes: A61B 90/96 using barcodes

Abstract

A medical instrument identification system for identifying a medical instrument from a plurality of medical instruments includes at least one optical sensor for detecting features of the at least one medical instrument, and a data processing device operatively coupled to the at least one optical sensor. The data processing device is operative to use videometric pattern recognition to identify the at least one medical instrument based on the detected features, wherein the optical sensor and the data processing device are assigned to a medical instrument tracking system.

Claims

1. A medical instrument identification system for identifying a medical instrument from a plurality of medical instruments, comprising:

a base part including a plurality of trackable markers attached thereto;

at least one functional part configured for attachment to the base part, the at least one functional part including at least one unique identification feature different from the trackable markers;

at least one optical sensor configured to detect the at least one identification feature of the at least one functional part when attached to the base part; and

a data processing device operatively coupled to said at least one optical sensor, said data processing device operative to use videometric pattern recognition to identify the at least one functional part based on the detected identification feature, wherein the optical sensor and the data processing device are assigned to a medical instrument tracking system.

2. The medical instrument identification system according to claim 1, wherein the data processing device is connected to or integrated within a data processor of the tracking system.

3. The medical instrument identification system according to claim 1, wherein the data processing device is connected to or integrated within a data processor of a medical navigation system assigned to the tracking system.

4. The medical instrument identification system according to claim 1, wherein the optical sensor comprises a tracking sensor or tracking sensors of the tracking system.

5. The medical instrument identification system according to claim 1, wherein the optical sensor comprises a CMOS or CCD sensor arranged on the tracking system.

6. The medical instrument identification system according to claim 5, wherein the optical sensor is a sensor used by the tracking system for tracking the medical instrument.

7. The medical instrument identification system according to claim 1, wherein the at least one identification feature comprises a plurality of identification features attached to or formed on each functional part of the at least one functional part.

8. The medical instrument identification system according to claim 7, wherein the plurality of identification features comprise at least two of a barcode, a text pattern or a color code.

9. The medical instrument identification system according to claim 7, wherein the at least one identification feature encircles a surface of the at least one functional part and are visible about a 360 degree view around the at least one functional part.

10. The medical instrument identification system according to claim 1, wherein the data processing device is operable to identify the instrument, an individual part of the instrument, or a combination of individual parts of the instrument from a group of such instruments, said identification based on an external shape of said instrument.

11. The medical instrument identification system according to claim 1, wherein the at least one optical sensor is further configured to detect a spatial position of the trackable markers, and to determine a spatial position of the at least one functional part when attached to the base part based on the detected spatial position and the detected identification feature.

12. A method for identifying a medical instrument from a plurality of medical instruments, the medical instrument including a base part having a plurality of trackable markers attached thereto, and at least one functional part removably attachable to the base part, the at least one functional part including at least one unique identification feature, the method comprising:

using at least one optical sensor assigned to a medical instrument tracking system to detect the at least one unique identification feature of the at least one functional part;

using a data processing device that implements videometric pattern recognition to process the detected at least one identification feature, said data processing device assigned to the tracking system; and

identifying the at least one functional part attached to the base part based on the processed at least one identification feature.

13. The method according to claim 12, wherein using at least one optical sensor to detect the at least one identification feature includes using a sensor that is provided in addition to tracking sensors of the tracking system as the optical sensor.

14. The method according to claim 13, wherein using the sensor provided in addition to the tracking sensor or tracking sensors includes arranging a CMOS or CCD sensor on the tracking system.

15. The method according to claim 12, wherein using at least one optical sensor includes using a tracking sensor or tracking sensors of the tracking system as the optical sensor.

16. The method according to claim 12, wherein using at least one optical sensor includes using a tracking sensor or tracking sensors of the tracking system and a sensor that is provided in addition to the tracking sensor or tracking sensors of the tracking system as the optical sensor.

17. The method according to claim 16, wherein using the tracking sensor or tracking sensors of the tracking system and the additional sensor includes:

evaluating sensor data from each sensor to determine which sensor or sensors provide more robust data;

or

combining data of a number of sensors and using the combined data as sensor data.

18. The method according to claim 17, wherein evaluating sensor data includes determining, based on the sensor data, which sensor has a more robust view of the instrument.

19. The method according to claim 12, wherein detecting the at least one unique identification feature includes using a barcode, a text pattern or a color code as the identification feature.

20. The method according to claim 12, wherein identifying the instrument includes identifying the instrument from a group of instruments based on an external shape of the instrument, an individual part of the instrument or a combination of individual parts of the instrument.

21. The method according to claim 12, wherein identifying the instrument includes identifying based on an external shape of the functional part or on an identification code attached to or formed on the functional part.

22. A non-transitory computer readable storage medium with an executable program stored thereon for identifying a medical instrument from a plurality of medical instruments, the medical instrument including a base part having a plurality of trackable markers attached thereto, and at least one functional part removably attachable to the base part, the at least one functional part including at least one unique identification feature, wherein the program instructs a processor to perform the following steps:

use data from at least one optical sensor assigned to a medical instrument tracking system to detect the at least one unique identification feature of the at least one functional part;

implement via the processor videometric pattern recognition to process the detected at least one identification feature; and

identify the at least one functional part attached to the base part based on the processed at least one identification feature.