CN108652759A - A kind of minimally invasive turnkey - Google Patents

Abstract

The invention discloses a minimally invasive tooth extraction device, which comprises a sleeve. A rotating shaft is arranged inside the sleeve. The outer wall of the rotating shaft is provided with several annular protrusions with equal intervals. The protruding direction of the annular protrusions is the radial direction of the rotating shaft. direction, the lower end of the rotating shaft is connected to the tail end of the root canal screw, and the sleeve wall is provided with gears that cooperate with several annular protrusions of the rotating shaft. Both sides are provided with a fixed arm extending axially along the sleeve, the upper end of the fixed arm is fixed on the sleeve wall, and the lower end of the fixed arm is provided with an enlarged structure. The shape of the expanded structure is an ellipsoid or a sphere, and the material of the expanded structure is Silicone, the fixed arm and the root canal screw point in the same direction; the root canal screw has a diameter-expanding structure from the tip to the tail, and the thread profile of the root canal screw's external thread is triangular. By adopting the minimally invasive tooth extractor, the whole tooth extraction process is safe, convenient, less traumatic, short in time, less in complications after tooth extraction, and quick in healing.

Description

A minimally invasive tooth extractor

technical field

The invention relates to the field of medical devices, in particular to a dental device for tooth extraction, in particular to a minimally invasive tooth extraction device.

Background technique

Tooth extraction is the most commonly used treatment technique in dentistry. Traditional tooth extraction uses the principle of lever mechanics, and the instruments used usually include tooth lifters, chisels, hammers, and tooth extraction forceps. The method is to place the tooth lifter and chisel at the interdental space and the corresponding alveolar ridge, forcefully pry or chisel the tooth loose, and then hold the pliers, or shake or twist to pull the affected tooth out. There are many problems in using the above instruments to extract teeth. First, the extraction operation mainly depends on the dentist’s experience and technology. It needs a long clinical training to master it proficiently. It is difficult for young doctors to master it. Second, if you encounter a broken tooth root, Above-mentioned instrument can't locate on the residual root, often very troublesome, needs to cut gingiva sometimes, brings a lot of misery to patient; The 3rd, no matter adopt tooth lifter, chisel, hammer or tooth extraction forceps etc. all can cause wound when extracting the residual root of anterior tooth The area is large, which brings pain to the patient and affects the appearance at the same time.

Minimally invasive tooth extraction can reduce the damage of dental surgery as much as possible, easy to operate, and safer to extract teeth, thereby effectively reducing the pain of patients. At present, minimally invasive tooth extraction is to use the wedge force and slight rotational force of the minimally invasive tooth extraction knife to cut the periodontal ligament and squeeze the alveolar bone to increase the gap at the same time, and then use the tooth extraction forceps to extract the tooth with a slight force, although this The minimally invasive tooth extraction method greatly reduces the damage to the periodontal tissue during the entire tooth extraction process. However, due to the use of tooth extraction forceps to extract teeth, it is still inevitable to touch the patient's gums and alveolar bone, causing varying degrees of damage. Cause a lot of pain. However, the existing minimally invasive tooth extraction requires the doctor to use a minimally invasive tooth extraction knife and tooth extraction forceps at the same time to extract the tooth, and the tooth extraction process is more complicated.

Contents of the invention

In order to solve the deficiencies in the prior art, one of the purposes of the present invention is to provide a minimally invasive tooth extraction device, the entire tooth extraction process is safe, simple, small trauma, short time, fewer complications after tooth extraction, and faster healing quick.

In order to achieve the above object, the technical solution of the present invention is:

A minimally invasive tooth extraction device, comprising a sleeve, the sleeve is provided with a rotating shaft along the axial direction of the sleeve, and the outer wall of the rotating shaft is provided with a number of annular protrusions with equal intervals along the axial direction of the sleeve, and the protrusion direction of the annular protrusions is the radial direction of the rotating shaft, the lower end of the rotating shaft is connected to the tail end of the root canal screw, and the sleeve wall is provided with gears that cooperate with several annular protrusions of the rotating shaft, the gears are fixed to the twist handle that can rotate the gears, and the lower end of the sleeve The opposite sides of the sleeve wall are provided with fixed arms extending axially along the sleeve, the upper end of the fixed arm is fixed on the sleeve wall, and the lower end of the fixed arm is provided with an enlarged structure, which is in the shape of an ellipsoid or a sphere , the material of the enlarged structure is silica gel, and the fixed arm and the root canal screw have the same direction; wherein, the root canal screw has an enlarged diameter structure from the tip to the tail, and the thread profile of the root canal screw external thread is triangular.

The present invention utilizes the lever straight tooth principle of the airfoil corkscrew and the root canal screw with triangular external thread thread profile to fix the tooth from the inside of the tooth root without damaging the alveolar bone. However, the wing-shaped corkscrew cannot be completely applied to minimally invasive tooth extraction. First, it depends on the type selection of the root canal screw. The external thread thread profile of the root canal screw selected by the present invention is triangular to ensure that the external thread is sharp enough, and at the same time From the tip to the tail, it is an expanding structure, which can gradually increase the pressure between the external thread and the root canal, so that the root canal screw can be screwed into the root. Secondly, the tooth structure of the human body is completely different from the bottle mouth structure of red wine. The inventor of the present invention has tried to use various forms of structure as a support point for tooth extraction, such as a structure similar to an airfoil corkscrew. Teeth are used as supporting points, but the shape of each tooth of each person is different and there is also a situation of lack of teeth, so it is difficult to ensure that the root canal screw is extracted according to the predetermined route, thereby causing the risk of damage to the oral cavity; thus the present invention adopts the tail It is a fixed arm structure in the shape of an ellipsoid or a sphere. Through the clamping of the fixed arm and the contact between the ellipsoid or sphere and the gums, the root canal screw can be extracted according to the predetermined route. In order to prevent the damage of the fixed arm to the gums, silicone Contact with the gums, thereby achieving the purpose of safe tooth extraction.

Preferably, the upper end of the rotating shaft is provided with a knob. The root canal screw can be easily screwed into the root canal.

Preferably, the rotating shaft is provided with a joint, and the root canal nail is installed on the joint. Root canal nails of different thicknesses and lengths are usually required in clinical practice, and a joint is provided to facilitate installation and removal of the root canal nails.

Further preferably, the radial section of the tail end of the root canal nail is square, and the joint is provided with a groove matching the tail end of the root canal nail. It not only facilitates the installation and removal of the root canal screw, but also prevents the root canal screw from rotating with the rotation of the rotating shaft.

Preferably, there are two gears and two twist handles, which are arranged at opposite positions of the sleeve and are symmetrical about the rotation axis. Set as a double-wing structure, compared with the single-wing structure, the double-wing structure is more labor-saving.

Preferably, the lower end of the fixed arm is fixed with a spherical flange, and a dimple matching the spherical flange is provided in the enlarged structure. It is convenient to replace the enlarged structure and prevent the infection of oral diseases of different patients.

Preferably, the sleeve, the rotating shaft, the gear, the twist handle, the fixed arm and the root canal nail are all made of medical stainless steel.

Preferably, both the top inner wall and the middle inner wall of the sleeve are provided with guide sleeves. Prevent the axis of rotation from shifting.

Further preferably, the height of the annular protrusion at the lower end of the rotating shaft is higher than that of other annular protrusions, and the diameter of the radial section of the annular protrusion at the lower end of the rotating shaft is larger than the inner diameter of the guide sleeve. The ring-shaped protrusion cooperates with the guide sleeve to play a positioning role, preventing the tooth from being pulled out with too much force, and the rotating shaft is rotated out to damage the oral cavity.

Preferably, the radial section of the sleeve is circular. Easy to produce and convenient to process.

The beneficial effects of the present invention are:

1. The present invention has less trauma, and the root canal screw is inserted into the root of the tooth without damaging the gums and alveolar bone. The expanded structure in the shape of an ellipsoid or a sphere is made of silica gel, and there is no damage to the tissues around the tooth root.

2. The safety of tooth extraction in the present invention is good. The fixed arm is placed on the gingiva on the buccal and lingual side of the tooth root, which is conducive to the safe screwing of the root canal screw into the root canal. The nail broke.

3. The tooth extraction reliability of the present invention is high. The root canal screw has a diameter-expanding structure from the tip to the tail end. The thread profile of the external thread of the root canal screw is triangular. The inner wall of the root canal has sufficient contact and friction, which greatly improves the reliability of root extraction.

4. The tooth extraction operation of the present invention is simple, time-saving and labor-saving.

Description of drawings

The accompanying drawings constituting a part of the present application are used to provide further understanding of the present application, and the schematic embodiments and descriptions of the present application are used to explain the present application, and do not constitute improper limitations to the present application.

Fig. 1 is the structural representation of minimally invasive tooth extraction device of the present invention;

Fig. 2 is the structural representation of the minimally invasive tooth extraction device of embodiment;

Among them, 1. Sleeve, 2. Rotating shaft, 3. Annular protrusion, 4. Root canal screw, 5. Gear, 6. Twist handle, 7. Fixed arm, 8. Expanded structure, 9. Knob, 10. Joint , 11. Guide sleeve.

Detailed ways

It should be pointed out that the following detailed description is exemplary and is intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and/or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and/or combinations thereof.

The orientations or positional relationships indicated by "upper", "lower", "inner" and "outer" in this application are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicates or implies that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation

As introduced in the background technology, there are deficiencies in the prior art that the tooth extraction process of the minimally invasive tooth extraction device is complicated and the safety is not high. In order to solve the above technical problems, this application proposes a minimally invasive tooth extraction device.

A typical implementation of the present application, as shown in Figure 1, provides a minimally invasive tooth extraction device, including a sleeve 1, the sleeve 1 is provided with a rotating shaft 2 axially along the sleeve 1, and the outer wall of the rotating shaft 2 Along the axial direction of the sleeve 1, there are several annular protrusions 3 with equal intervals. The protrusion direction of the annular protrusions 3 is the radial direction of the rotating shaft 2. The lower end of the rotating shaft 2 is connected to the tail end of the root canal screw 4, and the sleeve 1 wall is provided with the gear 5 that cooperates with some annular protrusions 3 of the rotating shaft 2, the gear 5 is fixed to be able to rotate the twist handle 6 of the gear 5, and the opposite sides of the sleeve 1 wall at the lower end of the sleeve 1 are respectively provided with along sleeves. The fixed arm 7 extending in the axial direction of the cylinder, the upper end of the fixed arm 7 is fixed on the wall of the sleeve 1, the lower end of the fixed arm 7 is provided with an enlarged structure 8, the shape of the expanded structure 8 is an ellipsoid or a sphere, and the material of the expanded structure 8 is Silica gel, the fixed arm 7 is in the same direction as the root canal screw 4; wherein, the root canal screw 4 has an enlarged diameter structure from the tip to the tail end, and the thread profile of the external thread of the root canal screw 4 is triangular.

This application utilizes the lever straight tooth principle of the wing-shaped corkscrew and the root canal nail with a triangular external thread profile to fix the tooth from the inside of the tooth root without damaging the alveolar bone. However, the wing-shaped corkscrew cannot be completely applied to minimally invasive tooth extraction. First, it depends on the type selection of the root canal screw. The external thread thread profile of the root canal screw selected by the present invention is triangular to ensure that the external thread is sharp enough, and at the same time From the tip to the tail, it is an expanding structure, which can gradually increase the pressure between the external thread and the root canal, so that the root canal screw can be screwed into the root. Secondly, the tooth structure of the human body is completely different from the structure of the bottle mouth of red wine. The inventors of the present application have tried to use various forms of structures as support points for tooth extraction, such as using a structure similar to an airfoil corkscrew. Teeth are used as supporting points, but the shape of each tooth of each person is different and there is also a situation of lack of teeth, so it is difficult to ensure that the root canal screw is extracted according to the predetermined route, thereby causing the risk of damage to the oral cavity; thus the present invention adopts the tail It is a fixed arm structure in the shape of an ellipsoid or a sphere. Through the clamping of the fixed arm and the contact between the ellipsoid or sphere and the gums, the root canal screw can be extracted according to the predetermined route. In order to prevent the damage of the fixed arm to the gums, silicone Contact with the gums, thereby achieving the purpose of safe tooth extraction.

In order to make it easier for the root canal screw to be screwed into the root canal, the present application is provided with a knob on the upper end of the rotating shaft.

Root canal nails of different thicknesses and lengths are usually required in clinical practice. In order to facilitate the installation and removal of the root canal nails, the present application is provided with a joint on the rotating shaft, and the root canal nail is installed on the joint.

In order to prevent the root canal nail from rotating with the rotation of the rotation shaft, the application sets the diameter section of the tail end of the root canal nail to be square, and the joint is provided with a groove matching the tail end of the root canal nail.

In order to reduce the force of the tooth extraction process, the present application adopts two gears and twist handles, which are arranged at opposite positions of the sleeve and are symmetrical about the rotation axis. The present application is set as a double-wing structure, and compared with a single-wing structure, the double-wing structure is more labor-saving.

In clinical practice, the oral hygiene conditions of different patients are different. In order to prevent the infection of oral diseases of different patients, the application fixes a spherical flange at the lower end of the fixed arm, and a dimple matching the spherical flange is provided in the enlarged structure. It is convenient to replace the enlarged structure.

In order to further ensure the safety of the tooth extraction process, the materials of the sleeve, the rotating shaft, the gear, the twist handle, the fixed arm and the root canal nail in this application are all medical stainless steel.

In order to prevent the deviation of the rotation axis during tooth extraction, guide sleeves are provided on the top inner wall and the middle inner wall of the sleeve.

In order to prevent tooth extraction with too much force, the rotating shaft spins out and damages the oral cavity, the height of the annular protrusion at the lower end of the rotating shaft is higher than that of other annular protrusions in this application, and the diameter of the radial section of the annular protrusion at the lower end of the rotating shaft is larger than that of the guide sleeve inner diameter. The annular protrusion cooperates with the guide sleeve to play a positioning role.

Since the inner cavity of the sleeve in this application is a cylindrical structure, which is easy to produce and process, the radial section of the sleeve in this application is circular.

In order to enable those skilled in the art to understand the technical solution of the present application more clearly, the technical solution of the present application will be described in detail below in conjunction with specific embodiments.

A minimally invasive tooth extraction device, as shown in Figure 2, includes a sleeve 1, the sleeve 1 is provided with a rotating shaft 2 along the axial direction of the sleeve 1, and the outer wall of the rotating shaft 2 is provided with a number of equal intervals along the axial direction of the sleeve 1. The ring-shaped protrusion 3, the protrusion direction of the ring-shaped protrusion 3 is the radial direction of the rotation shaft 2, the lower end of the rotation shaft 2 is connected to the tail end of the root canal screw 4, and the wall of the sleeve 1 is provided with a number of joints with the rotation shaft 2. The gear 5 that the annular projection 3 cooperates, the gear 5 fixes the twist handle 6 that can rotate the gear 5, and the opposite sides of the sleeve 1 wall at the lower end of the sleeve 1 are respectively provided with a fixed arm 7 extending axially along the sleeve 1 to fix the The upper end of the arm 7 is fixed on the wall of the sleeve 1, the lower end of the fixed arm 7 is provided with an enlarged structure 8, the shape of the enlarged structure 8 is an ellipsoid or a sphere, and the material of the expanded structure 8 is silica gel, the fixed arm 7 and the root canal nail 4 The directions are the same; wherein, the endodontic screw 4 has a diameter-expanding structure from the tip to the tail end, and the thread form of the external thread of the endodontic screw 4 is triangular. The upper end of the rotating shaft 2 is provided with a knob 9 .

The rotating shaft 2 is provided with a joint 10 on which the root canal nail 4 is installed. The diameter section of the tail end of the root canal nail 4 is square, and the joint 10 is provided with a groove matched with the tail end of the root canal nail 4 .

There are two gears 5 and two twist handles 6, which are arranged at opposite positions to the sleeve 1, and are symmetrical about the rotation axis 2. The lower end of the fixed arm 7 is fixed with a spherical flange, and the enlarged structure 8 is provided with a pit matching with the spherical flange. The sleeve 1, the rotating shaft 2, the gear 5, the twist handle 6, the fixed arm 7 and the root canal nail 4 are all made of medical stainless steel. Both the top inner wall and the middle inner wall of the sleeve 1 are provided with guide sleeves 11 . The height of the annular protrusion at the lower end of the rotating shaft 2 is higher than that of other annular protrusions, and the diameter of the radial section of the annular protrusion at the lower end of the rotating shaft 2 is larger than the inner diameter of the guide sleeve 11 .

The radial section of the sleeve 1 is circular.

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

Claims (10)

1. A minimally invasive tooth extractor is characterized in that it comprises a sleeve, the sleeve is provided with a rotating shaft along the axial direction of the sleeve, and the outer wall of the rotating shaft is provided with several annular projections with equal spacing along the axial direction of the sleeve, and the ring The protruding direction of the protrusion is the radial direction of the rotating shaft. The lower end of the rotating shaft is connected to the tail end of the canal screw. The sleeve wall is provided with gears that cooperate with several annular protrusions of the rotating shaft. The gears are fixed and can rotate the gears. Twist the handle, the opposite sides of the sleeve wall at the lower end of the sleeve are respectively provided with fixed arms extending axially along the sleeve, the upper end of the fixed arm is fixed on the sleeve wall, and the lower end of the fixed arm is provided with an enlarged structure. The shape is an ellipsoid or a sphere, and the material of the enlarged structure is silica gel. The fixed arm and the root canal screw have the same direction; the root canal screw has an enlarged diameter structure from the tip to the tail, and the thread profile of the root canal screw external thread is triangular. . 2. The minimally invasive tooth extraction device according to claim 1, wherein a knob is provided on the upper end of the rotating shaft. 3. The minimally invasive tooth extraction device according to claim 1, wherein the rotating shaft is provided with a joint, and the root canal nail is installed on the joint. 4. The minimally invasive tooth extractor according to claim 3, wherein the radial section of the tail end of the root canal nail is square, and the joint is provided with a groove matching the tail end of the root canal nail. 5. The minimally invasive tooth extraction device according to claim 1, wherein there are two gears and two twist handles, which are arranged at opposite positions of the sleeve and are symmetrical about the rotation axis. 6. The minimally invasive tooth extraction device according to claim 1, wherein the lower end of the fixed arm is fixed with a spherical flange, and a dimple matching the spherical flange is provided in the enlarged structure. 7. The minimally invasive tooth extractor according to claim 1, wherein the sleeve, the rotating shaft, the gear, the twist handle, the fixed arm and the root canal nail are all made of medical stainless steel. 8. The minimally invasive tooth extraction device according to claim 1, wherein the top inner wall and the middle inner wall of the sleeve are provided with guide sleeves. 9. The minimally invasive tooth extractor as claimed in claim 8, wherein the height of the annular protrusion at the lower end of the rotating shaft is higher than that of other annular protrusions, and the diameter of the radial section of the annular protrusion at the lower end of the rotating shaft is larger than that of the guide inner diameter of the sleeve. 10. The minimally invasive tooth extraction device according to claim 1, wherein the radial section of the sleeve is circular.