WO2004032481B1 - Intraoral image sensor - Google Patents

Intraoral image sensor

Info

Publication number
WO2004032481B1
WO2004032481B1 PCT/US2003/031129 US0331129W WO2004032481B1 WO 2004032481 B1 WO2004032481 B1 WO 2004032481B1 US 0331129 W US0331129 W US 0331129W WO 2004032481 B1 WO2004032481 B1 WO 2004032481B1
Authority
WO
WIPO (PCT)
Prior art keywords
subsystem
sensor
new
sensor array
radiation
Prior art date
Application number
PCT/US2003/031129
Other languages
French (fr)
Other versions
WO2004032481A2 (en
WO2004032481A3 (en
Inventor
David Schick
Stan Mandelkern
Valeriy Armencha
Original Assignee
Schick Technologies Inc
David Schick
Stan Mandelkern
Valeriy Armencha
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schick Technologies Inc, David Schick, Stan Mandelkern, Valeriy Armencha filed Critical Schick Technologies Inc
Priority to AU2003290522A priority Critical patent/AU2003290522A1/en
Priority to JP2004542014A priority patent/JP5031986B2/en
Priority to EP03783058.5A priority patent/EP1554869B1/en
Publication of WO2004032481A2 publication Critical patent/WO2004032481A2/en
Publication of WO2004032481A3 publication Critical patent/WO2004032481A3/en
Publication of WO2004032481B1 publication Critical patent/WO2004032481B1/en

Links

Classifications

    • A61B6/512—
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
    • A61B5/0082—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes
    • A61B5/0088—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes for oral or dental tissue
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/44—Constructional features of apparatus for radiation diagnosis
    • A61B6/4494—Means for identifying the diagnostic device
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/66—Remote control of cameras or camera parts, e.g. by remote control devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2560/00—Constructional details of operational features of apparatus; Accessories for medical measuring apparatus
    • A61B2560/02—Operational features
    • A61B2560/0204—Operational features of power management
    • A61B2560/0209—Operational features of power management adapted for power saving
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/16—Details of sensor housings or probes; Details of structural supports for sensors
    • A61B2562/17—Comprising radiolucent components
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/56—Details of data transmission or power supply, e.g. use of slip rings
    • A61B6/563—Details of data transmission or power supply, e.g. use of slip rings involving image data transmission via a network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/30—Transforming light or analogous information into electric information
    • H04N5/32—Transforming X-rays
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
    • Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation

Abstract

A system for capturing multiple intraoral images includes an intraoral sensor. The sensor (1) includes a sensor array, a transmitter and a power source that provides power to the sensor array and the transmitter. The sensor is configured to be inserted inside a patient’s oral cavity, capture an image upon the presence of incident radiation and transmit from within the oral cavity via a wireless link (4) electrical signals representing the image. A base station (2) positioned outside the oral cavity is configured to receive the electrical signals transmitted from the sensor. The sensor is capable of capturing transmitting to the base station electrical signals representing multiple intraoral images without requiring that the sensor be removed from the patient’s oral cavity.

Claims

AMENDED CLAIMS [Received by the International Bureau on 17 September 2004 (17.09.2004); original claims 1-21 replaced by amended claims 1-57 (15 pages)]
1. A system for capturing intraoral images, comprising: an intraoral sensor including an x-ray sensitive sensor array, a transmitter, and a power source that provides power to the sensor array and the
transmitter, said intraoral sensor configured to be inserted into a patient's oral cavity, capture a still image upon the presence of incident x-rays and transmit from within the oral cavity via a wireless link electrical signals representing the still image; and a base station positioned outside the oral cavity configured to receive the electrical signals transmitted by said intraoral sensor via the wireless link, wherein said intraoral sensor is capable of capturing and transmitting to the base station electrical signals representing multiple still images without requiring that said sensor be removed from the oral cavity.
2. The system according to claim 1, wherein said sensor array comprises a complementary metal oxide semiconductor active pixel sensor array.
3. The system according to claim 1, wherein said sensor array comprises a charge-coupled device.
AMENDED SHEET (ARTICLE 19)
22
4. The system according to claim 1, wherein said powersource
comprises a battery.
5. The system according to claim 4, wherein said battery is
rechargeable.
6. The system according to claim 1, wherein said transmitter is a radio frequency transmitter and wherein the wireless radio link is a wireless frequency link.
7. An intraoral sensor, comprising: a first subsystem that includes an x-ray sensitive sensor array that captures a still image upon the presence of incident x-rays; a second subsystem that includes a transmitter that transmits via a
wireless link signals representing a still image captured by the sensor array; a third subsystem that includes a power source that provides power to said first subsystem and second subsystem; and a fourth subsystem that includes a controller that selectively controls the provision of power by said third subsystem to said first subsystem and said second subsystem.
8. The intraoral sensor according to claim 7, wherein the sensor array comprises a complementary metal oxide semiconductor active pixel sensor array.
9. The intraoral sensor according to claim 7, wherein the sensor array
comprises a charge-coupled device.
10. The intraoral sensor according to claim 7, wherein the powersource
comprises a battery.
11. The intraoral sensor according to claim 10, wherein the battery is
rechargeable.
12. The intraoral sensor according to claim 7, wherein the transmitter is
a radio frequency transmitter and wherein the wireless link is a wireless radio frequency link.
13. An intraoral sensor, comprising: a radiation sensitive sensor array that captures an image upon the presence
of incident radiation; an event detection circuit including a current sensing device, said event detection circuit configured to generate a triggering signal indicating the presence of radiation incident on the sensor array based upon the amount of electrical current drawn by
the sensor array; and a transmitter adapted to transmit via a wireless link signals representing an image captured by the sensor array.
AMENDED SHEET (ARTICLE 19) 24
14. The intraoral sensor according to claim 13, wherein the sensor array comprises a complementary metal oxide semiconductor active pixel sensor array.
15. The introral sensor according to claim 13, wherein the sensor array comprises a charge-coupled device.
16. The intraoral sensor according to claim 13, wherein the powersource
comprises a battery.
17. The intraoral sensor according to claim 16, wherein the battery is rechargeable.
18. The introral sensor according to claim 13, wherein the transmitter is a radio frequency transmitter and wherein the wireless link is a wireless radio frequency link.
19. An intraoral sensor, comprising: means for capturing a still image upon the presence of incident x- rays; means for transmitting via a wireless link signals representing the still image captured by said capturing means;
AMENDED SHEET (ARTICLE 19)
25 means for providing electrical power to said capturing means and
said transmitting means; and means for selectively controlling the provision of power to said
capturing means and said transmitting means.
20. An intraoral sensor, comprising: means for capturing an image upon the presence of incident radiation; means for generating a triggering signal indicating the presence of radiation incident on said capturing means based upon the amount of electrical current drawn by said capturing means; and means for transmitting via a wireless link signals representing an image captured by said capturing means.
21. An intraoral sensor, comprising: a first subsystem that includes an x-ray sensitive sensor array that captures an image upon the presence of incident x-rays; a second subsystem that includes an analog-to-digital converter that converts analog signals representing an image captured by the sensor array into digital image signals; a logic circuit that conditions the digital image signals into a format suitable for transmission via a wireless link; and
AMENDED SHEET (ARTICLE 19)
26 a transmitter that transmits via the wireless link the conditioned
digital image signals; a third subsystem that includes a power source that provides power to said
first subsystem and said second subsystem; and a fourth subsystem that includes a controller that selectively controls the
provision of power by said third subsystem to said first subsystem and said second subsystem.
22. (New Claim) An electronic image sensor comprising: a first subsystem that includes an x-ray sensitive sensor array that captures a still image upon the presence of incident x-rays; a second subsystem that provides signals to control the reading out of data from the sensor array; a third subsystem that provides electrical power to said first subsystem and
said second subsystem; and a fourth subsystem that includes a controller that provides control signals to said third subsystem to selectively control the provision of electrical power to said first subsystem and said second subsystem.
23. (New Claim) The sensor according to claim 22, wherein said third subsystem includes a power source.
AMENDED SHEET (ARTICLE 19)
27
24. (New Claim) The sensor according to claim 23, wherein the power
source is a battery.
25. (New Claim) The sensor according to claim 22, wherein the controller provides control signals to operate the sensor in a plurality of modes, including: a. a power-off mode in which no electrical power is provided to either said first subsystem or said second subsystem; b. an idle mode in which electrical power is provided to said first subsystem and no electrical power is provided to said second subsystem; c. a send image mode in which electrical power is provided to both said first subsystem and said second subsystem.
26. (New Claim) The sensor according to claim 25, wherein said second subsystem includes a digital logic circuit that provides clock signals to the sensor array to read image data out of the sensor array.
27. (New Claim) The sensor according to claim 26, wherein the controller provides a control signal to the digital logic circuit to selectively control the provision of clock signals by the digital logic circuit to the sensor array.
28. (New Claim) The sensor according to claim 27, wherein the control signal controls the digital logic circuit to provide clock signals when said sensor is being
AMENDED SHEET (ARTICLE 19)
28 operated in the send image mode, and controls the digital logic circuit not to provide clock signals when said sensor is being operated in the idle mode.
29. (New Claim) The sensor according to claim 22, wherein said second subsystem further comprises a analog-to-digital converter that converts analog image data read out of the sensor array into digital image data.
30. (New Claim) An electronic image sensor comprising: a first subsystem that includes an x-ray sensitive sensor array that captures a still image upon the presence of incident x-rays; a second subsystem that provides electrical power to said first subsystem and said second subsystem; and a third subsystem that includes a controller that provides control signals to said second subsystem to selectively control the provision of electrical power to said first subsystem.
31. (New Claim) The sensor according to claim 30, wherein the controller further controls the provision of clock signals to the sensor array to effect the reading-out of data from the sensor array.
32. (New Claim) The sensor according to claim 31, wherein the controller controls the provision of clock signals to the sensor array only
AMENDED SHEET (ARTICLE 19)
29 a. a predetermined time subsequent to the sensor array having
been exposed to radiation; and b. in order to read out image data representing a dark frame.
33. (New Claim) A method of providing electrical power to components of an electronic image sensor, said electronic image sensor including an x-ray sensitive array and electronic circuitry for providing signals to control the reading out of data from the sensor array, said method comprising the steps of: operating said image sensor in a power-off mode in which no electrical power is provided to either the sensor array or the electronic circuitry; operating said image sensor in an idle mode in which electrical power is provided to the sensor array and no electrical power is provided to the electronic circuitry; and operating said image sensor in a send image mode in which electrical power is provided to both the sensor array and the electronic circuitry.
34. (New Claim) An electronic image sensor comprising: a first subsystem that includes means for capturing a still image upon the presence of incident x-rays; a second subsystem that includes means for providing signals to control the reading out of data from the means for capturing in said first subsystem;
AMENDED SHEET (ARTICLE 19)
30 a third subsystem that includes means for providing electrical power to said
first subsystem and said second subsystem; and a fourth subsystem that includes means for controlling said third subsystem to selectively confrol the provision of electrical power to said first subsystem and said
second subsystem.
35. (New Claim) The sensor according to claim 34, wherein said third subsystem includes a power source.
36. (New Claim) The sensor according to claim 35, wherein the power
source is a battery.
37. (New Claim) The sensor according to claim 34, wherein the means for controlling in said fourth subsystem provides control signals to operate the sensor in a plurality of modes, including: a. a power-off mode in which no electrical power is provided to either said first subsystem or said second subsystem; b. an idle mode in which electrical power is provided to said first subsystem and no electrical power is provided to said second subsystem; c. a send image mode in which electrical power is provided to both said first subsystem and said second subsystem.
AMENDED SHEET (ARTICLE 19)
31
38. (New Claim) The sensor according to claim 37, wherein the means for providing in said second subsystem provides clock signals to the means for capturing in
said first subsystem.
39. (New Claim) The sensor according to claim 38, wherein the means for controlling in said fourth subsystem provides a control signal to the means for providing in said second subsystem to selectively control the provision of clock signals by the means for
providing in said second subsystem to the means for capturing in said first subsystem.
40. (New Claim) The sensor according to claim 39, wherein the confrol signal controls the means for providing in said second subsystem to provide clock signals when said sensor is being operated in the send image mode, and controls the means for providing in said second subsystem not to provide clock signals when said sensor is being operated in the idle mode.
41. (New Claim) The sensor according to claim 34, wherein said second subsystem further comprises mean for converting analog image data read out of the means for capturing in said first subsystem into digital image data.
42. (New Claim) A method of determining that radiation is incident upon a radiation sensitive sensor comprising a plurality of radiation sensitive pixels, said method comprising the steps of
AMENDED SHEET (ARTICLE 19)
32 monitoring an amount of current drawn by the plurality of radiation
sensitive pixels; generating a signal indicating a presence of incident radiation when the amount of current drawn by the plurality of radiation sensitive pixels exceeds a predetermined amount.
43. (New Claim) The method according to claim 42, wherein the amount of current drawn by the plurality of radiation sensitive pixels is measured using a resistor.
44. (New Claim) The method according to claim 43, wherein the signal indicating the presence of incident radiation is generated by a comparator.
45. (New Claim) The method according to claim 34, wherein the comparator compares a voltage proportional to the amount of current drawn by the plurality of radiation sensitive pixels with a fixed reference voltage.
46. (New Claim) The method according to claim 45, wherein the
comparator generates a signal indicating the presence of incident radiation when the voltage proportional to the amount of current drawn by the plurality at radiation sensitive pixels exceeds the fixed reference voltage.
AMENDED SHEET (ARTICLE 19)
33
47. (New Claim) The method according to claim 42, wherein said sensor is an intraoral sensor adapted to capture x-ray images inside of a patient's mouth.
48. (New Claim) The method according to claim 42, wherein said plurality
of radiation sensitive pixels comprises a CMOS active pixel sensor array.
49. (New Claim) A radiation sensitive sensor, comprising a plurality of radiation sensitive pixels; an event detection circuit that determines that radiation is incident upon said plurality of pixels based upon an amount of electrical current drawn by said plurality of pixels.
50. (New Claim) A sensor according to claim 49, wherein said event detection circuit includes: a resistor that senses an amount of current drawn by said plurality of pixels; a voltage divider that generates a reference voltage; and a comparator that generates a triggering signal when the voltage across said resistor exceeds the reference voltage.
51. (New Claim) A sensor according to claim 49, wherein said sensor is an infraoral sensor adapted to capture x-ray images inside of a patient's mouth.
AMENDED SHEET (ARTICLE 19)
34
52. (New Claim) A sensor according to claim 49, wherein said plurality of radiation sensitive pixels comprises a CMOS active pixel sensor array.
53. (New Claim) A radiation sensitive sensor comprising: means for generating an amount of electrical charge corresponding to an
intensity of radiation incident on said sensor; means for determining that radiation is incident on said generating means based upon an amount of electrical current drawn by said generating means.
54. (New Claim) A radiation sensor according to claim 53, wherein said determining means includes: means for generating a reference voltage; and means for generating a voltage proportional to the amount of electrical current drawn by said charge generating means.
55. (New Claim) A radiation sensor according to claim 53, wherein said determining means includes: means for determining that radiation is incident on said charge generating means when the voltage proportional to the amount of current drawn by said charge generating means exceeds the reference voltage.
AMENDED SHEET (ARTICLE 19)
35
56. (New Claim) A radiation sensor according to claim 53, wherein said sensor is an intraoral sensor adapted to capture x-ray images inside of a patient's mouth.
57. (New Claim) A radiation sensor according to claim 53, wherein said charge generating means comprises a CMOS active pixel sensor array.
AMENDED SHEET (ARTICLE 19)
36
PCT/US2003/031129 2002-10-03 2003-10-02 Intraoral image sensor WO2004032481A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU2003290522A AU2003290522A1 (en) 2002-10-03 2003-10-02 Intraoral image sensor
JP2004542014A JP5031986B2 (en) 2002-10-03 2003-10-02 Intraoral image sensor
EP03783058.5A EP1554869B1 (en) 2002-10-03 2003-10-02 Intraoral image sensor

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US41571602P 2002-10-03 2002-10-03
US60/415,716 2002-10-03
US10/315,007 US7072443B2 (en) 2002-10-03 2002-12-10 Intraoral image sensor
US10/315,007 2002-12-10

Publications (3)

Publication Number Publication Date
WO2004032481A2 WO2004032481A2 (en) 2004-04-15
WO2004032481A3 WO2004032481A3 (en) 2004-10-07
WO2004032481B1 true WO2004032481B1 (en) 2005-02-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2003/031129 WO2004032481A2 (en) 2002-10-03 2003-10-02 Intraoral image sensor

Country Status (5)

Country Link
US (2) US7072443B2 (en)
EP (3) EP2392260A3 (en)
JP (3) JP5031986B2 (en)
AU (1) AU2003290522A1 (en)
WO (1) WO2004032481A2 (en)

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US20060193436A1 (en) 2006-08-31
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US20040066898A1 (en) 2004-04-08
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