CN110507429A - Jawbone foreign body surgical guide - Google Patents

Abstract

The invention relates to the field of medical instruments, in particular to a surgical guide plate for removing foreign bodies in the jaw. The surgical guide plate for jaw foreign body removal includes a plate body; the plate body is provided with positioning grooves, foreign body guide holes and cutting guide holes; the plate body is a curved plate; Cooperate with each other for positioning; the axis of the foreign matter guide hole intersects the axis of the cutting guide hole, and the foreign matter guide hole is connected with the positioning groove, and the cutting guide hole is connected with the positioning groove. The present invention can place the plate body at the position of the broken device after precisely locating the position of the broken device, and set the cutting guide hole and the foreign matter guide hole correspondingly to the broken device, so that the drill bit can directly cut the part of the jaw around the broken device through the cutting guide hole. Bone resection, the broken instrument can be taken out from the foreign body guide hole, without a lot of grinding of the jaw bone, which reduces the adverse effect on the recovery of the patient.

Description

Jaw foreign body removal surgical guide

technical field

The invention relates to the field of medical instruments, in particular to a surgical guide plate for removing foreign bodies in the jaw.

Background technique

Extraction of third molars is one of the most common surgical procedures in oral and maxillofacial surgery, and the use of high-speed dental handpieces to segment teeth is common practice.

When removing bone resistance and parting teeth, due to repeated use of parting burs, improper technique of the operator, metal mechanical fatigue and other reasons, the burs may break in the jawbone. In the treatment of endodontics, root perforation may occur, and the endodontic instrument breaks in the alveolar bone through the perforation. In addition, in orthognathic surgery, surgical burs occasionally occur, and the drill bit breaks in the jawbone.

Often, broken instruments are visible and can be removed directly during the procedure. However, it is also possible that the operator is unable to locate the broken instrument and x-rays are required to locate the broken instrument and assist the operator in its removal.

The traditional removal method is to take dental films or panoramic films through cone beam projection computerized reconstruction tomography (CBCT), and locate the broken device, then perform surgical exploration, and then grind a large amount of jawbone around the broken device. Remove the broken instrument.

Such a removal method will grind away a large amount of jaw bone, which in turn will have a certain impact on the recovery of the patient.

Contents of the invention

The purpose of the present invention is to provide a jaw bone foreign body removal surgery guide, which can make the drill bit pass through the cutting guide hole to directly cut off the part of the jaw around the broken device after accurately locating the position of the broken device, so that the broken device can be removed from the foreign body guide hole. It does not need a large amount of grinding of the jaw, which reduces the adverse effect on the recovery of the patient.

Embodiments of the present invention are achieved like this:

A jaw foreign body removal surgical guide plate, which includes a plate body;

The plate body is provided with positioning grooves, foreign matter guide holes and cutting guide holes;

The plate body is a curved plate;

The positioning groove is arranged on the plane side of the plate body, and is used for positioning in cooperation with the patient's gums or teeth;

The axis of the foreign matter guide hole intersects the axis of the cutting guide hole, and the foreign matter guide hole communicates with the positioning groove, and the cutting guide hole communicates with the positioning groove.

In a preferred embodiment of the present invention, the foreign matter guide hole is a circular hole; the cutting guide hole is a circular hole.

In a preferred embodiment of the present invention, the diameter of the foreign matter guide hole is greater than or equal to the diameter of the cutting guide hole.

In a preferred embodiment of the present invention, the groove bottom of the positioning groove is provided with a plurality of tooth sockets, and the tooth sockets are used to match the patient's teeth.

In a preferred embodiment of the present invention, both the foreign body guide hole and the cutting guide hole communicate with the same alveolar.

In a preferred embodiment of the present invention, positioning holes are provided on the plate body for positioning the plate body on the teeth;

The positioning hole communicates with the positioning groove.

In a preferred embodiment of the present invention, there are multiple positioning holes, and the multiple positioning holes are arranged on the same side of the board body.

In a preferred embodiment of the present invention, at least one positioning hole is provided on opposite sides of the board body.

In a preferred embodiment of the present invention, a reinforcing plate is arranged on the plate body;

The reinforcing plate is arranged on opposite sides of the positioning groove, and is arranged corresponding to the position of the cutting guide hole.

In a preferred embodiment of the present invention, there are multiple cutting guide holes, and the axes of the multiple cutting guide holes intersect on the axis of the foreign matter guide hole.

The beneficial effects of the embodiments of the present invention are:

After accurately locating the position of the broken device, the plate body can be placed at the position of the broken device, and the cutting guide hole and the foreign body guide hole are set correspondingly to the broken device, so that the drill bit can directly resect part of the jaw around the broken device through the cutting guide hole , the broken instrument can be taken out from the foreign body guide hole, without a large amount of grinding of the jaw bone, which reduces the adverse effect on the recovery of the patient.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

Fig. 1 is the schematic diagram of the jaw foreign body extraction surgical guide plate provided by the embodiment of the present invention;

Fig. 2 is a schematic diagram of another angle of view of the jaw foreign body removal surgical guide provided by the embodiment of the present invention;

3 is a schematic diagram of the three-dimensional effect of the jaw foreign body removal surgical guide provided by the embodiment of the present invention;

Fig. 4 is a schematic perspective view of another stereoscopic effect of the jaw foreign body removal surgical guide provided by the embodiment of the present invention.

In the picture:

1: plate body; 2: guide hole for foreign matter; 3: first guide ring; 4: positioning groove; 5: cutting guide hole; 6: second guide ring; 7: reinforcement plate; 8: positioning hole; 9: tooth socket .

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that is usually placed when the product of the invention is used, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying References to devices or elements must have a particular orientation, be constructed, and operate in a particular orientation and therefore should not be construed as limiting the invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions, and should not be construed as indicating or implying relative importance.

In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", and it does not mean that the structure must be completely horizontal, but can be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation", "installation", "connection" and "connection" should be understood in a broad sense, for example, it may be a fixed connection, It can also be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

Some embodiments of the present invention will be described in detail below in conjunction with accompanying drawings 1 to 4 . In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

A surgical guide plate for removing foreign bodies in the jaw, which includes a plate body 1; a positioning groove 4, a foreign body guide hole 2 and a cutting guide hole 5 are arranged on the plate body 1; the plate body 1 is a curved plate; the positioning groove 4 is arranged on the plate body 1 The plane side is used to coordinate with the patient's gums or teeth for positioning; the axis of the foreign matter guide hole 2 intersects the axis of the cutting guide hole 5, and the foreign matter guide hole 2 is connected to the positioning groove 4, and the cutting guide hole 5 is connected to the positioning groove 4 connected.

In this embodiment, the material of the plate body 1 is medical photosensitive resin. After scanning the teeth through CBCT, a template is generated according to the relative position of each tooth and the shape of each tooth, and then the plate body 1 is obtained by 3D printing. .

Specifically, the manufacturing steps of the plate body 1 are as follows:

S1: Obtain oral images including the patient's jaw, teeth and foreign bodies in the jaw through CBCT equipment;

S2: Convert the oral cavity image into an editable 3D data format, and import it into a 3D editing software to obtain a 3D simulation model;

S3: Import the 3D simulation model into the software to obtain the 3D restoration model;

S4: Generate a plate body 1 model according to the 3D restoration model design;

S5: Import the plate body 1 model into a cutting device or a 3D printer, and produce a target plate body 1 through the cutting device or a 3D printer.

In this embodiment, the position of the positioning groove 4 matches the position of the patient's teeth, and the positioning of the plate body 1 is realized through the cooperation of the positioning groove 4 and the teeth.

When in use, the plate body 1 is positioned through the positioning groove 4 so that the cutting guide hole 5 corresponds to the bottom of the fractured instrument, and then a trephine is used to pass through the foreign matter guide hole 2 to punch holes on the teeth, and the broken instrument or other foreign matter Wrap it into the trephine, and then drill the cutting drill through the cutting guide hole 5 to the position of the tooth or gum, and break the bone tissue at the bottom part of the broken device; at this time, the broken device or other foreign bodies are completely separated from the bone tissue. The trephination can take out the broken instrument or other foreign bodies and part of the surrounding bone tissue from the foreign body guide hole 2 .

The whole operation is fast and accurate, and does not wear a large amount of bone tissue to the patient, thereby reducing adverse effects on the recovery of the patient.

In this embodiment, a plurality of tooth sockets 9 are provided at the bottom of the positioning groove 4, and each tooth socket 9 corresponds to a tooth, so that when the tooth matches the tooth socket 9, the fixing of the plate body 1 on the tooth is realized and positioning.

More specifically, in this embodiment, the fit between the positioning groove 4 and the teeth, and the fit between the alveolar 9 and the teeth are all tight fits, that is, transition fits, so that after the plate body 1 is installed on the teeth, it is not easy to break away.

The arrangement of a plurality of tooth sockets 9 makes the length of the plate body 1 correspondingly longer, avoiding that the plate body 1 is too short to cause unstable fixation. The length of the plate body 1 should not be too long, otherwise the foreign body guide hole 2 and the cutting guide hole 5 are not easy to be arranged corresponding to the position of the broken device.

In this embodiment, the positions of the cutting guide hole 5 and the foreign matter guide hole 2 are both near the end of the plate body 1 .

It should be pointed out that the position of the cutting guide hole 5 and the foreign matter guide hole 2 on the plate body 1 can be at the end, but it is not limited to the end, and it can be specifically positioned and adjusted according to the specific position of the broken instrument , to ensure that foreign objects such as broken instruments can be safely taken out.

In a preferred embodiment of the present invention, the foreign matter guide hole 2 is a circular hole; the cutting guide hole 5 is a circular hole.

In this embodiment, the foreign matter guide hole 2 is a circular hole. In order to ensure that the foreign matter guide hole 2 can be found more accurately and foreign matter such as broken instruments can be taken out, a first guide ring 3 is provided on the plate body 1, and the first The guide ring 3 is coaxial with the foreign matter guide hole 2 .

It should be pointed out that the foreign matter guide hole 2 can be set as a circular hole, but it is not limited to a circular hole, it can also be a hole structure of other shapes, such as a square hole, a triangular hole, a rhombus Holes, etc., that is to say, as long as it can cut off the bone tissue around the fractured instrument by trephine, and the fractured instrument can be taken out from the foreign body guide hole 2.

Similarly, in this embodiment, the cutting guide hole 5 is a circular hole. In order to ensure that the cutting guide hole 5 can be accurately found, so that the drill bit can better enter the cutting guide hole 5, the plate body 1 is provided with a The second guide ring 6 , and the second guide ring 6 is coaxial with the cutting guide hole 5 .

It should be pointed out that the cutting guide hole 5 can be set as a circular hole, but it is not limited to a circular hole, it can also be a hole structure of other shapes, such as a square hole, a triangular hole, a rhombus Holes etc., that is to say, as long as it can cut off the bone tissue part at the bottom of the broken instrument by the drill bit.

In this embodiment, the inner diameter of the first guide ring 3 is the same as the diameter of the foreign matter guide hole 2, and the inner hole of the first guide ring 3 is a straight hole, and the foreign matter guide hole 2 is also a straight hole, which can effectively avoid When drilling, the direction of the drill bit changes to ensure the accuracy of the drilling position.

In the same way, in this embodiment, the inner diameter of the second guide ring 6 is the same as the diameter of the cutting guide hole 5, and the inner hole of the second guide ring 6 is a straight hole, and the cutting guide hole 5 is also a straight hole, which can effectively Avoid changing the direction of the drill bit when drilling, and ensure the accuracy of the drilling position.

In a preferred embodiment of the present invention, the diameter of the foreign matter guide hole 2 is greater than or equal to the diameter of the cutting guide hole 5 .

The diameter of the foreign body guide hole 2 is greater than or equal to the diameter of the cutting guide hole 5, which can not only ensure the complete removal of the broken instrument, but also reduce the cutting wear on the bone tissue and reduce the impact on recovery.

In a preferred embodiment of the present invention, both the foreign body guide hole 2 and the cutting guide hole 5 communicate with the same alveolar 9 .

More specifically, the axis of the foreign matter guide hole 2 intersects with the axis of the cutting guide hole 5 to ensure that the broken instrument or other foreign matter can be completely removed from the patient's bone tissue, and the amount of resection wear can be effectively reduced.

In a preferred embodiment of the present invention, the plate body 1 is provided with a positioning hole 8 for positioning the plate body 1 on the teeth; the positioning hole 8 communicates with the positioning groove 4 .

In order to ensure the stability of the positioning of the plate body 1 on the teeth and to avoid the instability of the tightly fitted plate body 1 when it vibrates in the external environment, in this embodiment, a positioning hole 8 is provided on the plate body 1, and the positioning hole 8 and The positioning groove 4 communicates.

During use, a peg is placed on the patient's jaw, and after the positioning hole 8 is set correspondingly to the peg, the plate body 1 is hung on the jaw to ensure the accuracy and stability of the positioning.

In a preferred embodiment of the present invention, there are multiple positioning holes 8 , and the multiple positioning holes 8 are arranged on the same side of the plate body 1 .

In this embodiment, in order to further ensure the accuracy and stability of positioning, a plurality of positioning holes 8 are provided, and a plurality of pegs are set on the outside of the patient's jaw, and the positioning holes 8 are matched with the pegs one by one. Accurate and stable positioning of the board body 1 is realized.

In a preferred embodiment of the present invention, there are multiple positioning holes 8 , and the multiple positioning holes 8 are respectively arranged on opposite sides of the plate body 1 .

In this embodiment, in order to further ensure the accuracy and stability of the positioning of the plate body 1, a plurality of positioning holes 8 are provided, and they are respectively arranged on opposite sides of the plate body 1, and are connected to both sides of the patient's jawbone. The multiple pegs are matched one by one to ensure the precise and stable positioning of the board body 1 to the greatest extent.

In a preferred embodiment of the present invention, a reinforcing plate 7 is arranged on the plate body 1; the reinforcing plate 7 is arranged on opposite sides of the positioning groove 4, and is arranged corresponding to the position of the cutting guide hole 5.

Specifically, the positioning holes 8 are provided on the reinforcing plate 7, which can ensure the accuracy of positioning.

More specifically, in this embodiment, the reinforcing plate 7 is arranged correspondingly to the position of the cut-off guide hole 5 , so as to avoid the reduction of the strength of the board body 1 due to the setting of the cut-off guide hole 5 .

In a preferred embodiment of the present invention, there are multiple cutting guide holes 5 , and the axes of the multiple cutting guide holes 5 intersect on the axis of the foreign matter guide hole 2 .

When some broken instruments or other foreign bodies are large in size, or the cutting position is inconvenient, the bottom of the broken instrument can be cut from multiple angles and directions to ensure that the bone tissue at the bottom of the broken instrument or other foreign bodies can be removed Cut off, and the broken instrument or other foreign matter is taken out through the foreign matter guide hole 2.

The beneficial effects of the embodiments of the present invention are:

After accurately locating the position of the broken device, the plate body 1 can be placed at the position of the broken device, and the cutting guide hole 5 and the foreign matter guide hole 2 are set correspondingly to the broken device, so that the drill bit can directly surround the broken device through the cutting guide hole 5 Partial jaw resection allows the broken instrument to be taken out from the foreign body guide hole 2 without a large amount of grinding of the jaw, which reduces adverse effects on the recovery of the patient.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. A jaw foreign body removal surgical guide plate, characterized in that it comprises a plate body; The plate body is provided with positioning grooves, foreign matter guide holes and cutting guide holes; The plate body is a curved plate; The positioning groove is arranged on a plane side of the plate body, and is used for positioning in cooperation with the patient's gums or teeth; The axis of the foreign matter guide hole intersects the axis of the cutting guide hole, and the foreign matter guide hole communicates with the positioning groove, and the cutting guide hole communicates with the positioning groove. 2 . The surgical guide plate for removing foreign bodies in the jaw according to claim 1 , wherein the foreign body guide hole is a circular hole; the cutting guide hole is a circular hole. 3 . 3 . The surgical guide plate for removing foreign bodies in the jaw according to claim 2 , wherein the diameter of the foreign body guide hole is greater than or equal to the diameter of the cutting guide hole. 4 . 4 . The surgical guide plate for removing foreign bodies in the jaw according to claim 1 , characterized in that, the bottom of the positioning groove is provided with a plurality of alveoli, and the alveoli are used to match the patient's teeth. 5 . The surgical guide plate for removing foreign bodies in the jaw according to claim 4 , wherein both the foreign body guide hole and the cutting guide hole are connected to the same alveolar. 6 . 6. The surgical guide plate for removing foreign bodies in the jaw according to claim 1, wherein the plate body is provided with a positioning hole for positioning the plate body on the teeth; The positioning hole communicates with the positioning groove. 7 . The surgical guide plate for removing foreign bodies in the jaw according to claim 6 , wherein there are multiple positioning holes, and the multiple positioning holes are arranged on the same side of the plate body. 8 . 8 . The surgical guide plate for removing foreign bodies in the jaw according to claim 6 , wherein at least one positioning hole is provided on opposite sides of the plate body. 9. The surgical guide plate for removing foreign bodies in the jaw according to claim 1, characterized in that, the plate body is provided with a reinforcing plate; The reinforcing plate is arranged on opposite sides of the positioning groove, and is arranged corresponding to the position of the cutting guide hole. 10 . The surgical guide plate for removing foreign bodies in the jaw according to claim 1 , wherein there are a plurality of cutting guide holes, and the axes of the plurality of cutting guide holes intersect on the axis of the foreign body guide holes. 11 .