ASSISTED GUIDANCE AND NAVIGATION METHOD IN INTRAORAL SURGERY

Abstract

An assisted guidance and navigation method in intraoral surgeries is a method using computerized tomography (CT) photography and an optical positioning system to track medical appliances, the method including: first providing an optical positioning treatment instrument and an optical positioning device; then obtaining image data of the intraoral tissue receiving treatment through CT photography, precisely displaying actions of the treatment instrument in the image data, and real-time checking an image and guidance and navigation. Therefore, during the surgery, the existing use habits of the physicians are not affected and accurate and convenient auxiliary information is provided, and attention is paid to using the treatment instrument in physical environments such as a patient's tooth or dental model.

Claims

1. An assisted guidance and navigation method in intraoral surgeries, which is a method using computerized tomography (CT) photography and an optical positioning system to track medical appliances, the method at least comprising: (A) providing an optical positioning treatment instrument and an optical positioning device at an intraoral tissue receiving treatment, wherein the optical positioning treatment instrument is combined with a housing, and optical elements are set up on the surface of the housing; (B) obtaining image data of the intraoral tissue receiving treatment through CT photography, obtaining a positioning relationship between the treatment instrument and the optical positioning device, making the image data and physical space generate correspondence through an algorithm, and then combining actions of the treatment instrument with the image data precisely; and (C) real-time checking the image data and assisting guidance and navigation to perform a surgery on the intraoral tissue through movement of the treatment instrument at teeth receiving treatment.

2. The method according to claim 1, wherein.

3. The method according to claim 1, wherein the intraoral tissue receiving treatment is a patient's dental model.

4. The method according to claim 1, wherein step (C) comprises switching a manner of checking the image data through a control device, switching that checking the image data does not vary with movement of the treatment instrument, or checking the image data varies with movement of the treatment instrument.

5. The method according to claim 1, wherein step (C) comprises directly making check during a surgery on the intraoral tissue through real-time checking the image data.

6. The method according to claim 1, wherein after step (B), the method further comprises step (B-1), using surgical planning software to combine the image data to plan a surgical planning data file.

7. The method according to claim 6, wherein the surgical planning data file made in step (B-1) is planned clinically by a doctor, to serve as a guide basis of the surgery of treating the intraoral tissue in step (C).

8. The method according to claim 6, wherein the surgical planning data file made in step (B-1) is planned by a trainer and/or a trainee, to serve as an implementation assisted guidance and navigation basis of the surgery on the intraoral tissue in step (C).

9. The method according to claim 6, wherein, after step (B-1), the method further comprises step (B-2), transferring the surgical planning data file to make a surgical guide plate.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG. 1 is a schematic view of an implementation flow of the present invention;

[0020] FIG. 2 is a first schematic view of another implementation flow of the present invention; and

[0021] FIG. 3 is a second schematic view of another implementation flow of the present invention.

[0022] FIG. 4 is a schematic view of the housing for the treatment instrument.

[0023] FIG. 5 is an another side schematic view of the housing for the treatment instrument.

[0024] FIG. 6 is a schematic view of the housing with the treatment instrument.

[0025] FIG. 7 is a schematic view of the housing with the treatment instrument.

[0026] FIGS. 8 and 9 are a schematic view of the housing with another kind of treatment instrument.

[0027] FIG. 10 is a schematic view of another housing for the treatment instrument.

[0028] FIG. 11 is an another side schematic view of another housing for the treatment instrument.

[0029] FIGS. 12 to 15 are a schematic view of another housing with the treatment instrument.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] Detailed content and technical description about the present invention are further described with embodiments, but it should be understood that, the embodiments are only exemplary, instead of being construed as limitations to implementation of the present invention.

[0031] The present invention discloses an assisted guidance and navigation method in intraoral surgeries, which is a method using CT photography and an optical positioning system to track medical appliances.

[0032] The CT photography is a known technique, and is not the focus of the patent, which is not repeated herein. U.S. Pat. No. 6,675,040 “Optical Object Tracking System” discloses an optical detection system, used for recording positions of instruments connected with optically detectable objects in space, which, through camera systems in combination with data processors, image scan data, and computers and associated graphic display, could provide tracking of instruments, objects, patients, and apparatus in a surgical, diagnostic, or treatment setting; and the following patent technology discloses related improved technologies, and thus the technology of tracking medical appliances through an optical positioning system is a known technology, and is not the focus of the patent, which is not repeated herein.

[0033] FIG. 1 is a schematic view of an implementation flow of the present invention. The assisted guidance and navigation method in intraoral surgeries according to the present invention at least includes the following steps.

[0034] Step (A): provide an optical positioning treatment instrument and an optical positioning device at an intraoral tissue receiving treatment. The intraoral tissue receiving treatment is a patient's intraoral soft and hard tissues, or a patient's dental model. The existing intraoral tissue treatment manners mostly rely on clinical experience and surgical techniques of the doctor, for some treatment cases, if the doctor assesses that treatment can be directly made, the optical positioning treatment instrument and the optical positioning device can be used in the mouth of the patient receiving treatment; and the doctor can make assessment by first making the patient's tooth model or clinical surgery, and setting the optical positioning treatment instrument and the optical positioning device on the completed teeth model, to make the following pre-surgery planning or pre-surgery simulation and comparison.

[0035] Step (B): obtain image data of the intraoral tissue receiving treatment through CT photography, obtain a positioning relationship between the treatment instrument and the optical positioning device, make the image data and physical space generate correspondence through an algorithm, and then combine actions of the treatment instrument with the image data precisely. By taking tooth implant as an example, loading CT photography of receiving treatment through imaging software can display the jawbone anatomical images in the patient's implant area, to help the doctor to decide the best implant orientation, and provide the doctor with a more complete dental 3D virtual environment.

[0036] Step (C): the doctor could real-time check the image data and perform assisted guidance and navigation for the intraoral tissue through movement of the treatment instrument at teeth receiving treatment according to the positioning relationship between the treatment instrument and the optical positioning device and the correspondence generated by the image data and the physical space by only moving the treatment instrument.

[0037] According to the steps of the method, the doctor, during treatment of the intraoral tissues, could focus on using the treatment instrument in physical environments such as a patient's mouth or tooth model. The method, in terms of implementation, does not affect the existing use habits of the physicians and accurate and provides convenient auxiliary information, which may not require surgical planning in applications and can reduce the duration of the intraoral tissue surgical treatment.

[0038] In terms of implementation, step (C) may include switching a manner of checking the image data through a control device, switching that checking the image data does not vary with movement of the treatment instrument, or checking the image data varies with movement of the treatment instrument. For example, switching of image data is controlled and checked through a foot switch or a manual switch, so that the image data may not vary with movement of the treatment instrument, which facilitates the doctor to make more detailed interpretation and evaluation for some CT images.

[0039] Referring to FIG. 2, after step (B), the method further includes a step (B-1), where the doctor can use surgical planning software to plan a surgical planning data file, and through pre-surgery planning, so that the system performs assisted guidance and navigation and alert according to planning data during the treatment in step (C).

[0040] The surgical planning data file made in step (B-1) is planned by a doctor, to directly serve as an assisted guidance and navigation basis of the surgery of treating the intraoral tissue. Alternatively, the surgical planning data file made in step (B-1) is planned by a trainer (teacher) and/or a trainee (student), wherein the trainee (student) could use his own planning as implementation guide practice, and the trainer (teacher) may make correction, or the trainer (teacher) provides a standard surgical planning data file to serve as an implementation assisted guidance and navigation basis of the surgery of treating the intraoral tissue, which can be applied to education and training of the intraoral tissue surgery.

[0041] Referring to FIG. 3, after step (B-1), the method further includes a step (B-2), wherein the surgical planning data file is transferred to make a surgical guide plate. The existing technology of manufacturing a surgical guide plate may be divided into two types: rapid prototyping and numerical drilling, wherein the rapid prototyping technology is disclosed in U.S. Pat. No. 5,768,134; the numerical drilling technology is disclosed in U.S. Pat. No. 5,967,777, U.S. Pat. No. 6,296,483, U.S. Pat. No. 6,814,575, and so on, the technology of manufacturing surgical guide plate is a known technology, and is not the focus of the patent, which is not repeated herein.

[0042] The present invention uses a new treatment method using CT photography and an optical positioning system to track medical appliances, which uses CT photography and an optical positioning device to decide relevant direction, angle and depth for an intraoral tissue surgery, also provides selection information of treatment instruments, and real-time provides CT images of intraoral tissues around the treatment instruments, to achieve the function of assisting guidance and navigation during the surgery, and during the oral treatment, the doctor can focus on using the treatment instrument in physical environments such as a patient's tooth or dental model, which may not need surgical planning in applications, greatly reduces the duration of the treatment, and also greatly increase the efficacy of surgical planning assessment.

[0043] Referring to FIG. 4 to FIG. 15, the optical positioning treatment instrument T is combined with a housing 10, and optical elements 101 are set up on the surface of the housing 10. The optical elements 101 could be an active light-emitting element or a reflective element. The active light-emitting element is an item that can generate light by itself or by other means of driving, such as a Led light-emitting diode that generates light for the supply of electricity for the optical positioning system to confirm the position. The active light-emitting element of the invention is described. And the provision of electrical power may be electrically connected by a therapeutic tool or an additional battery may be provided. Reflective elements that can reflect the light of the components, in order to facilitate system identification, can be made of approximate mirror material made of reflective elements.

[0044] As shown in FIG. 4 to FIG. 9, the housing 10 could be combined with a structure of treatment instrument T. The housing 10 shown in FIG. 10 to FIG. 15 are described another structure. The housing 10 could be plug in a structure which is set on the treatment instrument T, or be plug in a corresponding structure 21 of a clip 20 to engage with the treatment instrument T.

[0045] Through the installations of the housing 10, they can be directly applied to existing equipments, and do not affect the user's habit of holding the grip or the gesture of the use, and overcome the shortcomings of the conventional technique.

[0046] The above are only preferred embodiments of the present invention, which cannot be used to define the scope of the present invention. That is, any simple equivalent variations and modifications made according to the claims and the content of the description should fall into the scope of the present invention.