CN217090890U

CN217090890U - Edentulous jaw navigation device

Info

Publication number: CN217090890U
Application number: CN202122876431.2U
Authority: CN
Inventors: 杨醒眉; 林志辉; 满毅; 杨仁丽
Original assignee: Sichuan University
Current assignee: Sichuan University
Priority date: 2021-11-19
Filing date: 2021-11-19
Publication date: 2022-08-02
Anticipated expiration: 2031-11-19

Abstract

The utility model belongs to the technical field of medical instrument, a edentulous jaw navigation head is disclosed, the cooperation of cell-phone locator downside has edentulous jaw tracker, edentulous jaw tracker and cell-phone locator wireless connection have the workstation. The mobile phone locator is provided with a mobile phone, the front end of the mobile phone is provided with a planting drill, the rear end of the mobile phone is provided with a planting motor through a mobile phone connecting piece, one side of the mobile phone connecting piece is provided with the locator, and the locator is provided with a second infrared LED group. The edentulous jaw tracker is provided with a planting assembly, the planting assembly is provided with an implant group, an implant cap is arranged on the upper portion of the implant group through a second screw, a support is welded on one side of the implant cap, and a reference plate is fixed to the tail end of the support through a first screw. The utility model does not need the skill to make extra accessories, effectively shortening the planting treatment period; the connection assembly for navigation is supported by the implant body implanted in the jaw bone in a pure rigid mode, and is not supported by the mucous membrane adopted by the guide plate, so that the positioning precision is higher, and the success rate of edentulous jaw cases is higher.

Description

Edentulous jaw navigation device

Technical Field

The utility model belongs to the technical field of medical instrument, especially, relate to a edentulous jaw navigation head.

Background

Currently, in recent decades, dental implant restoration techniques have become a reliable technique for treating partial or complete dentition loss. Before the implant operation, a doctor needs to judge the bone mass and the anatomical structure of the edentulous area by observing the Cone Beam CT (CBCT), thereby determining a treatment scheme, judging whether the repair can be carried out by an implant mode and judging the diameter and the length of an implant.

However, due to the limitation of the experience of the clinician, the deviation of the naked eye estimation, the existence of the technical sensitivity of the free hand implantation and the operation of the clinician in the free hand mode, the situation that the actual implantation position is inconsistent with the ideal implantation position is easy to occur, so that the nerve, the blood vessel or the adjacent tooth root is damaged, and the risk of the implantation operation is high.

With the continuous development of the planting technology and the digital technology, a planting guide plate (hereinafter referred to as a guide plate) is often adopted in clinical edentulous jaw planting operation to assist a surgeon in fixing points and preparing holes, so as to achieve the purpose of accurate planting. The guide plate mainly determines the position, the angle and the depth of the implant through the guide ring, and a doctor prepares the implant step by adopting a drill point matched with the guide plate, so that the implant can be implanted at the corresponding position of the alveolar bone according to the guide of the guide plate. On the other hand, the application of a new digitally guided implant surgery, i.e. dynamic surgical navigation, is becoming a focus. The dynamic operation navigation is realized by the virtual visual application of three-dimensional medical images and the combination of an accurate infrared positioning technology, so that the fusion of surgical instruments, the medical images and the actual human body space position is realized, the accurate operation navigation is realized, and the planting precision and the long-term success rate can be effectively improved. Dynamic surgical navigation the technology of retaining navigation device accessories such as reference plates and registration devices using natural teeth is well established, but for edentulous jaws there is no good solution to fixing reference plates and registration devices. Mucosal-supported markers, intracranial markers, which are either unstable or traumatic, have been reported in the literature; in recent years, israel's IGI navigation system develops a navigation fixing device for mandibular edentulous jaw, namely, temporary implants are respectively implanted into a central area of alveolar bone and bilateral molar areas for supporting a registration space positioning device, but the device cannot be widely developed due to the defects that the vertical bone mass of the posterior dental area is limited, the opening degree of a patient is insufficient, the temporary implants are easy to damage lower alveolar nerves and the like. The U.S. X-guide system implants three titanium nail support tracking devices in the posterior molar pad area, but the method has the problems of inconvenient operation in the posterior tooth area, easy injury to the lower alveolar nerve and the like. The australian inplantnav navigation system supports the tracking device with a temporary implant, but this temporary implant may occupy a surgical site without the dental jaw, i.e. the distribution and arrangement of other implant positions requires avoidance of the temporary implant, and may increase the economic burden on the patient.

Through the above analysis, the problems and defects of the prior art are as follows:

1. the existing navigation fixing device needs to implant an intraosseous temporary implant at the middle point of a lower anterior dental area and at two side molar areas respectively to support the tracking device, is easily limited by the vertical bone mass of a posterior dental area, and is difficult to implant the intraosseous temporary implant due to the residual available bone mass when the mandibular alveolar bone of a patient is seriously absorbed; meanwhile, important nerve and blood vessel structures exist around the bilateral molar area, and certain implantation risk exists.

2. When the patient has poor opening degree, the temporary implant implantation in the bone of the molar region is difficult to carry out, and the subsequent operation is influenced;

3. in the prior art, after the temporary implant is implanted into a bone, a model of a lower jaw is required to be prepared, a model containing a temporary implant prototype is copied, and teeth arrangement is carried out on the model, model and tooth arrangement errors are easy to occur in the model preparation process and the tooth arrangement process, the subsequent registration operation is influenced, the operation time beside a chair is greatly prolonged by the model copying, the tooth arrangement and other operations, and the tooth arrangement has higher requirements on doctor restoration technology;

4. the prior art needs to pass through the fixed corresponding connecting plate of adhesive in the temporary implant generation type top after accomplishing model tooth arrangement, further is connected reference plate and connecting plate through the adhesive to accomplish marking device's preparation in the model, the order patient wears marking device to carry out CBCT and shoots afterwards, and this process operation time is long, the step is loaded down with trivial details, and shoots the condition such as the CBCT in-process probably appears marking device pine and take off, and patient's uncomfortable simultaneously feels comparatively showing. In addition, because the reference plate, the connecting plate and the like are fixed by adopting the adhesive, the condition that the reference plate or the connecting plate is loosened and the like due to poor adhesive fixing effect may occur;

5. the connecting plate mainly carries out fixed stay through three interim implants in anterior molar district mid point, two side molar districts down, for avoiding blockking alveolar ridge crest, influence the operation of planting, the connecting plate is the horseshoe, is connected with three interim implants along alveolar bone tongue side, to the no dental jaw of lower jaw, the connecting plate easily hinders the tongue motion, leads to the patient to be uncomfortable, has the tongue to move repeatedly simultaneously and rubs and lead to the not hard up condition of connecting plate to take place.

The defect that an intraosseous temporary implant is implanted in any position of a jawbone to support a tracking device is that: the bone mass of the edentulous jaw is very limited, the temporary implant may occupy one implant site, i.e. other implants may not be implanted in the optimal site, while the price of the temporary implant is also high, which increases the economic burden on the patient.

The difficulty in solving the above problems and defects is:

1. because the edentulous time of the edentulous patient is long, the bone quantity of the alveolar bone is limited, the bone quantity of the alveolar bone needs to be analyzed and measured before the operation, a site suitable for implanting the temporary implant is found, the edentulous patient can not implant one bone temporary implant in the middle point of the lower anterior tooth area and the molar areas at two sides, and the prior art has certain requirements on the bone quantity of the operative area of the patient;

2. after the alveolar bone quantity can be respectively implanted into one intraosseous temporary implant at the middle point of the lower anterior tooth area and the bilateral molar areas, in order to avoid the influence of the temporary implants on the operation, the intraosseous temporary implants in the bilateral molar areas need to be positioned behind the implant sites of the posterior tooth area, and the conventional navigation and fixation device still has certain requirements on the opening degree of a patient;

3. for the edentulous jaw case, because the dentition is lost, the navigation device can not be supported and fixed by the teeth, the navigation device is fixed by the temporary implant, the connecting plate and the reference plate in a bonding mode, and the connecting plate is positioned on the tongue and palate side and is easy to block the movement of the tongue body. When a patient wears the navigation device to carry out CBCT shooting or the actual operation process in the operation, the navigation device is easy to be pressed by the tongue body, the condition of loose connection or slight displacement occurs, so that the accuracy of navigation is influenced, and in the operation process, if the navigation device is slightly displaced, an operator cannot observe the displacement of the navigation device in time, so that the risk of the implant operation is increased.

The significance of solving the problems and the defects is as follows: the fixing, planting and navigation device can accurately guide the edentulous jaw operation by a simpler, convenient and stable method, operations such as model copying, tooth arrangement, bonding and fixing of a connecting plate and the like are not needed, and the operation time beside a chair is shortened. In addition, through changing the fixed mode and the implantation site of interim planting body, can show and reduce the requirement to patient's operation region bone volume and opening degree, patient's uncomfortable sense also obtains obviously reducing, can further increase fixing device's stability simultaneously, reduces the fixed effect of adhesive and leads to the risk of fixing device not hard up aversion, and then reduces the operation risk.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems existing in the prior art, the utility model provides a edentulous jaw navigation device.

The utility model discloses a realize like this, a edentulous jaw navigation head is provided with:

a mobile phone locator;

the lower side of the mobile phone positioner is matched with the edentulous jaw tracker, and the edentulous jaw tracker and the mobile phone positioner are in wireless connection with a workstation.

Further, the mobile phone positioner is provided with a mobile phone, the front end of the mobile phone is provided with a planting drill, the rear end of the mobile phone is provided with a planting motor through a mobile phone connecting piece, one side of the mobile phone connecting piece is provided with the positioner, and the positioner is provided with a second infrared LED group.

Further, the edentulous jaw tracker is provided with an implantation assembly, the implantation assembly is provided with an implantation body group, an implantation body cap is arranged on the upper portion of the implantation body group through a second screw, a support is welded on one side of the implantation body cap, and a reference plate is fixed at the tail end of the support through a first screw.

Further, one side of the support is provided with a groove, and the groove is fixedly connected with the implant cap through mechanical welding.

Further, a first infrared LED group is arranged on the reference plate.

Furthermore, the workstation is provided with a navigator, a navigator column, a lifting support arm, a computer, a display, a keyboard and a mouse; the navigator is connected with the first infrared LED group and the second infrared LED group through infrared signals.

Combine foretell all technical scheme, the utility model discloses the advantage that possesses and positive effect are:

(1) the utility model has the advantages of no need of copying the model, arranging the teeth, bonding the connecting plate and other operations, simple operation, and effectively shortening the operation time beside the chair prepared before the operation;

(2) the connection component for navigation of the utility model is purely rigidly supported by the implant body implanted in the jaw bone, and is not fixed by the method of resin entering the undercut adopted in the prior art, so that the fixing effect of the navigation device is more stable and accurate, and the success rate of edentulous jaw case is higher;

(3) the utility model only needs to implant a final implant participating in false tooth repair in the anterior tooth area, does not need to implant a temporary implant in each of the molar areas on both sides, does not need to implant a temporary titanium nail in the molar area, avoids the risk of damaging the neural tube, and greatly reduces the requirements on the bone mass and the opening degree of the operative area of the patient;

(4) the utility model discloses because only implant one in the anterior tooth district and participate in prosthetic final planting body, therefore need not to use the shape of a hoof connecting plate that is located alveolar bone tongue side, but directly be connected with the reference plate outside the mouth through the rigid connection with the anterior tooth district planting body, avoided leading to the not hard up risk of navigation fixing device because of the tongue motion.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained from the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a edentulous navigation device provided by an embodiment of the present invention;

FIG. 2 is a schematic view of a edentulous jaw implanting assembly provided by an embodiment of the present invention;

fig. 3 is a schematic structural view of the edentulous jaw implanting assembly provided by the embodiment of the present invention.

In the figure: 10. a reference plate; 101. a first infrared LED group; 16. a first screw; 11. a planting assembly; 111. an implant group; 1122. An implant cap set; 1123. a support; 1123a, a groove; 200. a mobile phone locator; 20. a mobile phone; 21. a positioner; 211. a second infrared LED group; 22. a mobile phone connecting piece; 23. a planting motor; 24. planting and drilling; 30. periosteal screws; s, jawbone.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

To solve the problems in the prior art, the present invention provides a navigation device for a toothless jaw, which is described in detail below with reference to the accompanying drawings.

As shown in fig. 1 to 3, the lower side of the mobile phone locator 200 of the embodiment of the present invention is matched with the edentulous jaw tracker, and the edentulous jaw tracker and the mobile phone locator 200 are wirelessly connected to a workstation.

In this embodiment, the mobile phone locator 200 is provided with a mobile phone 20, the front end of the mobile phone 20 is provided with a planting drill 24, the rear end of the mobile phone 20 is provided with a planting motor 23 through a mobile phone connector 22, one side of the mobile phone connector 22 is provided with a locator 21, and the locator 21 is provided with a second infrared LED group 211.

In this embodiment, the edentulous jaw tracker is provided with an implant assembly 11, the implant assembly 11 is provided with an implant group 111, an implant cap 1122 is provided on the upper part of the implant group 111 through a second screw, a bracket 1123 is welded on one side of the implant cap 1122, and a reference plate 10 is fixed at the tail end of the bracket 1123 through a first screw 16;

the implant group 111 is an implant, but not limited to this, and the implant may also be a bone nail or other bone implant; the implant set 111 is implanted in the incisor area of the jawbone S, but not limited thereto.

In this embodiment, the implant cap 1122 is in the shape of a truncated cone, and has an opening on one side to accommodate the implant group 111; one side of the bracket 1123 is provided with a groove 1123a, and the groove 1123a is fixedly connected with the implant cap 1122 by mechanical welding.

In this embodiment, the reference plate 10 is provided with a first infrared LED group 101.

In this embodiment, the workstation is provided with a navigator, a navigator column, a lifting support arm, a computer, a display, a keyboard and a mouse; the navigator is connected with the first infrared LED group 101 and the second infrared LED group 211 through infrared signals.

The utility model discloses a theory of operation does:

at least 4 periosteum screws 30 are implanted in the non-operation area in the mouth of a patient under local anesthesia, the periosteum screws 30 are required to be fixed with a jaw bone S and are dispersed and not positioned on the same plane, so that a three-dimensional space is determined by four non-coplanar periosteum screws 30, the patient is required to be subjected to cone beam CT examination to obtain dicom data, and the cone beam CT can provide quite clear upper and lower jaw images comprising jaw bone S three-dimensional information, the position of a lower alveolar neurovascular bundle, the position and the size of a maxillary sinus and any suspicious focus which may appear.

Before operation, a doctor can import the dicom data of a patient into the implant navigation software of the edentulous implant navigation system, and design an implant on an ideal three-dimensional position in a dental model reconstructed by the implant navigation software.

The implant is implanted in the incisor area of the upper or lower jaw, and after the step of calibrating the reference plate 10 is completed, the reference plate 10 is mounted on the bracket 1123 by means of the connecting rod, the first screw 16. After the reference plate 10 is installed, the mobile phone 20 is registered by using the registration pins in the mouth;

the navigator is adjusted to a proper position to ensure that the reference plate 10 and the localizer 21 can be identified by the navigator in the whole process.

After the registration is finished, the patient wears the dental tracker to perform navigation implantation operation, in the implantation process, a doctor needs to observe the prompt on a software interface of the display all the time to perform operation, and when the implantation drill 24 and the implantation position are replaced, the model of the drill point loaded by the software and the position of the implant are ensured to be consistent with the actual situation.

After the operation is completed, the implant group is optionally unscrewed.

In the edentulous jaw case, the doctor passes through the utility model discloses the device accomplishes the accurate implantation of the planting body in the lower jaw, and it is visible in clinical use, and the planting art district does not have the baffle to cover, shelter from, and the art district field of vision is open completely, and the doctor is once looked directly in the art, also does benefit to the cooling water and gets into the planting nest, effectively avoids the bone to burn. The post-operation precision verification shows that the implant position is consistent with the preoperative design height.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The above description is only for the specific implementation of the present invention, but the protection scope of the present invention is not limited thereto, and any modifications, equivalent replacements and improvements made within the spirit and principle of the present invention should be covered by the protection scope of the present invention.

Claims

1. The edentulous jaw navigation device is characterized in that the lower side of the mobile phone positioner is matched with an edentulous jaw tracker, and the edentulous jaw tracker and the mobile phone positioner are in wireless connection with a workstation.

2. The edentulous jaw navigation device of claim 1, wherein the edentulous jaw tracker is provided with an implant assembly, the implant assembly is provided with an implant set, the upper part of the implant set is provided with an implant cap by a second screw, a bracket is welded on one side of the implant cap, and a reference plate is fixed on the tail end of the bracket by a first screw.

3. The edentulous jaw navigation device of claim 2, wherein one side of the bracket is provided with a groove that is fixedly connected to the implant cap by mechanical welding.

4. The edentulous navigation device of claim 2, wherein the reference plate has a first set of infrared LEDs disposed thereon.