WO2021191918A1 - Dispositif portatif pour la visualisation d'un canal radiculaire - Google Patents

Dispositif portatif pour la visualisation d'un canal radiculaire Download PDF

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Publication number
WO2021191918A1
WO2021191918A1 PCT/IN2021/050026 IN2021050026W WO2021191918A1 WO 2021191918 A1 WO2021191918 A1 WO 2021191918A1 IN 2021050026 W IN2021050026 W IN 2021050026W WO 2021191918 A1 WO2021191918 A1 WO 2021191918A1
Authority
WO
WIPO (PCT)
Prior art keywords
handheld device
root canal
control unit
visualization
unit
Prior art date
Application number
PCT/IN2021/050026
Other languages
English (en)
Inventor
Nibedit Dey
Priyabrata Rautray
Vikas Sahu
Original Assignee
Aidia Health Private Limited
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 Aidia Health Private Limited filed Critical Aidia Health Private Limited
Publication of WO2021191918A1 publication Critical patent/WO2021191918A1/fr

Links

Classifications

    • 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
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00002—Operational features of endoscopes
    • A61B1/00025—Operational features of endoscopes characterised by power management
    • A61B1/00027—Operational features of endoscopes characterised by power management characterised by power supply
    • A61B1/00032—Operational features of endoscopes characterised by power management characterised by power supply internally powered
    • A61B1/00034—Operational features of endoscopes characterised by power management characterised by power supply internally powered rechargeable
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00064—Constructional details of the endoscope body
    • A61B1/00066—Proximal part of endoscope body, e.g. handles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00064—Constructional details of the endoscope body
    • A61B1/00071—Insertion part of the endoscope body
    • A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
    • A61B1/00096—Optical elements
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
    • A61B1/0661—Endoscope light sources
    • A61B1/0684—Endoscope light sources using light emitting diodes [LED]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/24—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for the mouth, i.e. stomatoscopes, e.g. with tongue depressors; Instruments for opening or keeping open the mouth
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C5/00—Filling or capping teeth
    • A61C5/40—Implements for surgical treatment of the roots or nerves of the teeth; Nerve needles; Methods or instruments for medication of the roots

Definitions

  • the present disclosure is generally related to medical devices. Particularly, the present disclosure is related to handheld medical devices. More particularly, the present disclosure is related a handheld medical device for the visualization of root canal.
  • Root canal therapy or treatment also known as endodontic therapy, is a dental treatment for removing infection from inside a tooth. It can also protect the tooth from future infections. It is carried out in the pulp of the tooth, which is the root canal. Root canal therapy is done in three steps, namely cleaning the root canal, filling the root canal, and adding a crown or filling, and it takes between one and three sessions to complete. During a root canal treatment, several complications can occur. First, the dentist may find a lesser number of root canals in a tooth that has a higher number. If even one canal remains untreated, the infection might continue and spread into the bone.
  • the dentist must make sure that the filling material goes far enough into the canal, to fill it up. If the root canal is not properly sealed, the infection could return. Third, during the procedure, the root of the tooth may crack, making it hard to fill the tooth effectively.
  • root canal orifice in posterior teeth is one of the major problems a dentist faces while doing a root canal treatment. Majority have to only rely on the basic dental mirror and experience to visualize the prepared endodontic cavity to see pulp chamber and canal orifice, which can be easily missed while doing the root canal treatment. Missing a root canal, especially in posterior tooth, is one of the common problems faced by dentists, which ultimately affects the efficiency of treatment and increases the chances of root canal treatment failure.
  • a handheld device for root canal visualization comprises a display unit that enables a user to view an enlarged image or a video stream of the root canal pulp chamber of a patient.
  • the imaging unit captures said enlarged image or video stream that is displayed through the display unit.
  • Said display unit is: communicatively associated with an imaging unit, through wired or wireless technologies; powered by a power button that is disposed on the display unit; and associated with at least one first cable or wire that facilitates the transmission of power and/or data.
  • a handle comprises a control button, said control button enabling the user to take at least one snap of the live video stream.
  • a plurality of light emitting sources is adjusted or controlled through an adjustment button, said plurality of light emitting sources ensuring a uniform and sufficient distribution of light in the tooth cavity.
  • At least one rechargeable battery powers the handle and at least one charge indicator indicates the status of charging.
  • a first control unit controls image acquisition, while a second control unit controls the illumination and capturing desired images.
  • An optical unit is optimized for smaller focal lengths, said optical unit comprising: at least one optical sensor that detects and measures light, and at least one image sensor, said at least one optical sensor and said at least one image sensor being activated through the power button.
  • a protective cover prevents any damages to the at least one optical sensor and the at least one image sensor.
  • the handheld device communicates with an applicable installable on least one external device through a connectivity module, said application: comprising manual and automated image processing options; receiving the data; processing the data; and displaying the results through an interface.
  • the disclosed handheld device for root canal visualization does not limit movement; does not strain the eye while focusing; does not require an extra assistant; is handy and portable; is cheap; and has low maintenance costs. Further, the device allows to image objects as close as 1.5 mm.
  • Figure 1 illustrates an embodiment of a handheld device for root canal visualization, in accordance with the present disclosure
  • Figure 2 illustrates another embodiment of a handheld device for root canal visualization, in accordance with the present disclosure
  • Figure 3 illustrates a perspective view of an embodiment of a handle, in accordance with the present disclosure
  • Figure 4 illustrates a perspective view of another embodiment of a handle, in accordance with the present disclosure
  • Figure 5 illustrates an embodiment of an optical sensor, in accordance with the present disclosure
  • Figure 6 illustrates a side view and bottom view of an embodiment of an optical sensor, in accordance with the present disclosure
  • Figure 7 illustrates a flowchart that depicts the stages of workflow in an embodiment, in accordance with the present disclosure.
  • Figure 8 illustrates a flowchart that depicts the use of a handheld device for root canal visualization, in accordance with the present disclosure.
  • handheld device is to be construed as a device that can be held and used easily with one or two hands.
  • a handheld device (100) for root canal visualization is disclosed.
  • an embodiment of the handheld device (100) comprises an imaging unit and a display unit (101).
  • the display unit (101) is powered by a power button (102) that is disposed on the display unit (101). Further, the display unit (101) is associated with at least one first cable or wire/first charging cum data cable (103) that facilitates the transmission of power and/or data.
  • the display unit (101) enables a dentist or clinician or medical practitioner to view an enlarged image (104) or a video stream of the root canal pulp chamber of a patient, said enlarged image (104) or video stream being captured by the imaging unit.
  • the display unit (101) is communicatively associated with the imaging unit, through wired or wireless technologies.
  • a handle is associated with at least one second cable or wire/second charging cum data cable (108) that facilitates the transmission of power and/or data.
  • a connectivity module (106) communicatively associates the imaging unit and the display unit (101).
  • the display unit (101) is mounted on a table, based on the preference of the dentist or clinician or medical practitioner, and supports 360-degree rotation. Further, the display unit (101) comprises a real-time operating system and an internal Graphics Processing Unit (GPU) to process a video stream.
  • GPU Graphics Processing Unit
  • the handle comprises a control button (105) that takes at least one snap of a live video stream, said control button (105) being disposed in a middle portion of the handle.
  • the handheld device (100) starts recording the live stream.
  • the control button (105) may indicate the status with a different color illumination, with said status being displayed visually through the display unit (101) as well.
  • the handle is powered by at least one rechargeable battery or through an adaptor, while a plurality of light emitting sources (112) is adjusted or controlled through an adjustment button (109).
  • the plurality of light emitting sources (112) ensures that the distribution of light in the tooth cavity is uniform and of sufficient intensity.
  • At least one Light Emitting Diode (LED) is disposed at or near a first end of the handle to indicate the status of charging (charge indicator; 107).
  • the handle comprises a first control unit for controlling image acquisition (i.e. controlling the process of capturing still images or instantaneous images from the continuous video stream), and a second control unit for controlling the illumination and capturing desired image(s).
  • the acquisition data is transferred to the display unit (101) through the at least one second cable or wire (108), said at least one second cable or wire (108) being associated with the first end of the handle, or in a wireless manner through the connectivity module (106).
  • the handle also comprises an optical unit (111) that is disposed at a second end of the handle. As illustrated in Figure 5 and Figure 6, said optical unit (111) comprises: at least one optical sensor (501) that detects and measures light, and at least one image sensor.
  • the optical unit (111) is optimized for smaller focal lengths, which helps in imaging the root canals from very close distance.
  • a protective cover (110) prevents any damages to the at least one optical sensor (501) and the at least one image sensor, while the power button (102) activates the at least one optical sensor (501) and the at least one image sensor.
  • the handheld device (100) is capable of imaging objects from smaller distances ( ⁇ 2 to 10 mm) i.e. the distance from pulp floor of the tooth to the tip of the crown (white part of tooth).
  • the device (100) allows to image objects as close as 1.5 mm.
  • the viewing angle may differ as per application.
  • the handheld device (100) may also comprise a plurality of Printed Circuit Boards that control the operations of individual components.
  • a Printed Circuit Board (502) controls the operations of the optical unit (111).
  • another Printed Circuit Board may control the operations of the charge indicator (107).
  • the second control unit is disposed away from the optical unit (111), and a fiber optical cable may be used instead.
  • a master control unit controls and monitors the operations of the handheld device (100), said master control unit being communicatively associated with the first control unit and the second control unit.
  • the first control unit and the second control unit are microcontrollers.
  • the master control unit is a microcontroller.
  • the first control unit and the second control unit are System on Chip (SoC’s).
  • the master control unit is a SoC.
  • the plurality of light emitting sources (112) is a plurality of light emitting diodes.
  • the display unit (101) is a LCD or LED display. In yet another embodiment of the present disclosure, the display unit (101) is connected to a printer.
  • the viewing angle varies between 110 degrees and 180 degrees (preferably 128 degrees).
  • the handheld device (100) communicates with an applicable installable on least one external device through the connectivity module (106).
  • the application receives the data, processes the data, and displays the results through an interface/display.
  • the handheld device (100) may be configured and controlled remotely through the application installable on the external device.
  • the data may also be synced to a server and/or the cloud.
  • the at least one external device includes, but is not limited to, desktop computers, laptop computers, mobile phones, smart phones, tablets, phablets, and smart watches.
  • the communication from the handheld device with the at least one external device may occur through wireless internet, mobile data, Bluetooth Low Energy, LoRa, ZigBee, or the like.
  • the at least one external device comprises a display that may also function as a display unit.
  • the application comprises manual and automated image processing options, said automated image processing comprising a machine learning module.
  • the dentist identifies the tooth where root canal treatment is to be done. With an airotor, the dentist makes a hole/cavity (access cavity) in the tooth to reach the pulp chamber, with the shape of the hole being configured according to the tooth and its associated anatomy.
  • the dentist places a cotton swab to soak the blood and stop the bleeding from the pulp tissue.
  • the dentist visualizes the base of the pulp chamber and locates the canal opening through the handheld device (100).
  • the canal can be navigated with a hand file. Once the dentist successfully navigates and negotiates the canal, he/she can start cleaning and shaping the root canal using conventional hand files or rotary endomotor, while still using the handheld device (100) for better ease and visibility.
  • the optical unit (111) captures the image and converts the light into pixels of information - each pixel representing color and brightness, following which pixel information is combined to create bitmap frames.
  • the default image or video stream may be of 1920 x 1080 resolution at 30 fps.
  • the at least one optical sensor (501) provides colour output, and the resolutions and frames can be changed through the display unit (101).
  • the plurality of light emitting sources (112) can be adjusted to provide a better-quality image or video output.
  • the video stream is shown on the display unit (101) through the at least one second cable or wire (108) or the connectivity module (106).
  • a freeze control option or setting allows a user to pause acquisition by grabbing the image buffer and storing the same locally.
  • the user can optionally store as per chosen image format, with patient details.
  • the freeze control is toggle in nature and can switch to continuous mode on unfreeze.
  • video recording starts; this is stored as per the settings.
  • the application provides an interface to adjust parameters, such as brightness, gain, contrast, gamma, white balance, exposure time abs, sharpness, backlight compensation, hue, saturation, mirror, flip, frame rate, and resolution.
  • the application also helps in removing noises, filtering, cropping, identifying the edges, and correcting the image quality.
  • the machine learning module helps in decision making, with the assistive intelligence feature.
  • Images and video of the pulp chamber of tooth are captured initially and finally after cleaning, and the data is analyzed to predict the location of the canal orifice and location opening of the canal.
  • Figure 8 illustrates a flowchart that depicts the use or operation of the handheld device (100) for root canal visualization.
  • the handheld device (100) can be sterilized (surface sterilized via ethanol/spirit).
  • the handheld device (100) may be sterilized via autoclave.
  • the handheld device (100) may also comprise a provision to accommodate a disposable transparent plastic sheet that covers the device (100) while it is in use.
  • the sheet can be disposed of and the device (100) can be cleaned by spirit.
  • the handheld device (100) is made of stainless surgical steel or surgical grade plastic or equivalent materials suitable for sterilizations and good gripping.
  • the disclosed handheld device (100) for root canal visualization does not limit movement; does not strain the eye while focusing; does not require an extra assistant; is handy and portable; is cheap; and has low maintenance costs.
  • the handheld device (100) may comprise further buttons to enable the user to perform various functionalities, including, but not limited to, adjustment of gain, contrast, gamma, white balance, exposure time abs, sharpness, backlight compensation, hue, saturation, mirror, flip, frame rate, and resolution.
  • the disposition of the buttons on the handle or on the device (100) may vary to provide users with an ergonomic configuration.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Optics & Photonics (AREA)
  • Public Health (AREA)
  • Biophysics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Dentistry (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

L'invention concerne un dispositif portatif (100) pour la visualisation d'un canal radiculaire, comprenant : une unité d'affichage (101), ladite unité d'affichage (101) étant associée en communication à une unité d'imagerie qui capture une image agrandie (104) ou un flux vidéo qui est affiché par l'intermédiaire de l'unité d'affichage (101) ; une poignée qui comprend un bouton de commande (105) ; une pluralité de sources d'émission de lumière (112) qui assure une distribution uniforme et suffisante de la lumière dans la cavité dentaire ; au moins une batterie rechargeable et au moins un indicateur de charge (107) ; une première unité de commande pour commander l'acquisition d'image et une deuxième unité de commande pour commander l'éclairage et capturer des images souhaitées ; une unité optique (111) qui est optimisée pour des longueurs focales plus petites, ladite unité optique (111) comprenant : au moins un capteur optique (501) qui détecte et mesure la lumière et au moins un capteur d'image ; un couvercle de protection (110) ; et un dispositif pouvant être installé sur au moins un dispositif externe, avec lequel le dispositif portatif (100) communique par l'intermédiaire d'un module de connectivité (106).
PCT/IN2021/050026 2020-03-26 2021-01-10 Dispositif portatif pour la visualisation d'un canal radiculaire WO2021191918A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN202041013270 2020-03-26
IN202041013270 2020-03-26

Publications (1)

Publication Number Publication Date
WO2021191918A1 true WO2021191918A1 (fr) 2021-09-30

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PCT/IN2021/050026 WO2021191918A1 (fr) 2020-03-26 2021-01-10 Dispositif portatif pour la visualisation d'un canal radiculaire

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009148044A1 (fr) * 2008-06-06 2009-12-10 株式会社モリタ製作所 Dispositif de prise d’image utilisé dans le traitement dentaire et instrument de traitement dentaire équipé du dispositif de prise d’image
KR20130126349A (ko) * 2012-05-11 2013-11-20 (주)에스덴티 Ｐｃ기반의 치과 치료장비에 빌트인 된 근관측정과 확대할 수 있는 통합장치

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009148044A1 (fr) * 2008-06-06 2009-12-10 株式会社モリタ製作所 Dispositif de prise d’image utilisé dans le traitement dentaire et instrument de traitement dentaire équipé du dispositif de prise d’image
KR20130126349A (ko) * 2012-05-11 2013-11-20 (주)에스덴티 Ｐｃ기반의 치과 치료장비에 빌트인 된 근관측정과 확대할 수 있는 통합장치

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