CN214632407U - Penetrating type implant with self-locking tail end - Google Patents

Abstract

The utility model provides a but penetrating type planting body of terminal auto-lock, this planting body includes: a screw part having a screw formed on an outer circumferential surface thereof; and a distal end portion located at a leading end in an insertion direction of the implant and continuing to the threaded portion; wherein an elastically deformable protruding elastic piece is provided on an outer peripheral surface of the tip portion.

Description

Penetrating implants with self-locking ends

technical field

The utility model relates to the field of dental medical instruments, in particular to a penetrating implant with self-locking ends in the field of artificial tooth implantation.

Background technique

With the progress of clinical practice for decades and the improvement of people's awareness of aesthetics, dental implants have become one of the key repair technologies for missing oral teeth. high. In many cases of dental implant failure, the lack of alveolar bone height leads to insufficient osseointegration between the dental implant and the osseointegration, resulting in implant loosening and failure. Therefore, in the case of poor alveolar bone condition, the anti-loosening countermeasures of dental implant and osseointegration have become a key technical issue to further improve the long-term success rate of dental implants.

During the chewing process, the implant is subjected to periodic alternating forces of different magnitudes, directions and types, especially the pulling force when eating viscous food. However, in the case of poor alveolar bone condition, the osseointegration force is relatively small. At this time, the long-term exposure of the implant to such micro-movement may cause the loss of bone or material on the interface between the implant and the alveolar bone. This leads to the loosening of the implant, which greatly reduces the fatigue life of the implant.

The prior art shows that insufficient alveolar bone condition and fretting injury are important factors leading to osseointegration failure. Compared with other installed dentures, dental implants have obvious advantages and are currently used more and more widely. However, the following disadvantages still exist:

Because only the lower part of the implant penetrates into the alveolar bone to achieve the fixed connection between the two, when the height of the alveolar bone is not satisfied, the patient cannot use it, or the prognosis is poor, and it is easy to fall off. In addition, the implant can easily cause the surrounding bone resorption and loosen the implant, resulting in the failure of the implant. Moreover, the implants are perpendicular to the alveolar bone, resulting in axial mismatch with some crowns, forcing the upper half of the implants to be short, affecting the fixation and stability of the crowns.

Utility model content

In view of the above situation, the present utility model is proposed, and the present utility model provides a penetrating implant with self-locking ends, which can make the combination between the implant and the alveolar bone firm and reliable, and can prevent the implant from being damaged. Loose and fall off.

According to one aspect of the present utility model, there is provided a penetrating implant with a self-locking end, comprising:

a threaded portion having threads formed on an outer peripheral surface of the threaded portion; and

a distal end portion, the distal end portion is located at the leading end in the insertion direction of the implant, and is continuous with the threaded portion; wherein,

A protruding elastic piece capable of elastic deformation is provided on the outer peripheral surface of the tip portion.

Further, the elastic sheet extends in a plane perpendicular to the insertion direction of the implant.

Further, in the process of inserting the implant into the object, the portion of the elastic sheet at the radially outer side of the implant is elastically deformed toward the threaded portion side, and the elastic sheet fits the implant from the position of the elastic sheet. the collapsed state of the peripheral surface of the body; and

When the implant penetrates the object, the elastic sheet is exposed from the object to elastically return to a deployed state extending in the plane.

Further, the elastic sheet is formed to be more than 2; and

The elastic pieces are provided at equal intervals on the periphery of the distal end portion.

Further, the implant is formed into a columnar structure, and

The end surface of the tip portion at the opposite side to the screw portion is formed into a flat surface.

Further, the implant is formed such that the diameter gradually decreases from the threaded portion to the distal portion.

Further, the implant further includes an abutment, and the abutment is located at a position opposite to the threaded portion and the distal portion.

The technical solutions of the present utility model will be described in further detail below in conjunction with the accompanying drawings and preferred embodiments of the present utility model, and the beneficial effects of the present utility model will be further clarified.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the present utility model and constitute a part of the present utility model, but the descriptions are only used to explain the present utility model, and do not constitute an improper limitation of the present utility model.

1 is a side view of a penetrating implant with a self-locking end in a retracted state according to a preferred embodiment of the present invention;

Figure 2 is a bottom view of a self-locking penetrating implant at a distal end in a deployed state according to a preferred embodiment of the present invention;

3 is a bottom view of a modified example of the self-locking penetrating implant at the end according to a preferred embodiment of the present invention in a deployed state;

4 is a bottom view of another modification of the self-locking penetrating implant at the end according to a preferred embodiment of the present invention in a deployed state.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the corresponding accompanying drawings. Obviously, the described embodiments are only some of the preferred embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

The basic structure of the self-locking penetrating implant according to the embodiment of the present invention will be described below with reference to FIGS. 1-4 .

1 is a side view of a penetrating implant with a self-locking end according to a preferred embodiment of the present invention in a retracted state; FIG. 2 is a penetrating implant with a self-locking end according to a preferred embodiment of the present invention. Figure 3 is a bottom view of the self-locking penetrating implant in the deployed state according to a first modification of a preferred embodiment of the present invention; Figure 3 4 is a bottom view of the self-locking penetrating implant according to the second modification of a preferred embodiment of the present invention in a deployed state.

As shown in FIG. 1 , a self-locking penetrating implant (hereinafter may be referred to as “implant”) 1 according to an embodiment of the present invention is integrally formed into a substantially columnar structure.

The implant 1 sequentially includes an abutment 12, a threaded portion 10 and a tip portion 11 integrally provided along the axial direction (ie, the insertion direction of the implant 1), and the length thereof is designed to be able to pass through when the implant 1 is implanted. Through the alveolar bone or into the maxillary sinus mucosa (only the alveolar bone is penetrated as an example in the following), and from the threaded part 10 to the top part 11 , the diameter of the implant 1 gradually decreases.

The abutment 12 is used to fix the crown and engage with the gingiva.

The screw portion 10 is continuous with the base, and is formed into a tapered body whose diameter gradually decreases as the distance from the base 12 in the axial direction, and a male thread 101 is provided on the outer periphery of the screw portion 10 . The surface of the male thread 101 can be processed (eg, coating, surface treatment, heat treatment, etc.) to improve the joint strength between the male thread 101 and the bone, and increase its occlusal bearing capacity.

As shown in FIG. 1 , the end portion of the implant 1 opposite to the crown abutment 12 is a distal end portion 11 , which is a leading end in the insertion direction of the implant 1 and is continuous with the threaded portion 10 . An elastic piece 20 protruding from the outer peripheral surface of the distal end portion is provided on the outer circumference of the distal end portion 11 .

Specifically, the root portion of the elastic sheet 20 is connected to the outer peripheral surface of the distal end portion 11 of the implant 1, for example, can be integrally provided. Also, the elastic piece 20 is formed to extend along a plane P perpendicular to the axis of the implant 1 . The shape of the elastic sheet 20 may be formed in the plane P like a blade shape of a blade of a propeller (see FIG. 2 ).

The elastic sheet 20 is formed to have elasticity so as to be capable of elastic deformation and recovery. When the implant 1 is inserted into the alveolar bone, the radially outer portion of the elastic piece can be deformed toward the threaded portion 10 side of the implant 1 (upper side in FIG. 1 ), so that the elastic piece 20 as a whole is close to and The state of the elastic body 20 in this state is referred to as a folded state by being in contact with the outer peripheral surface of the male thread 101 . When the implant 1 has penetrated the alveolar bone, the elastic piece 20 protrudes out of the alveolar bone and is exposed on the opposite side of the alveolar bone to the side where the tooth is attached, and at this time, the elastic piece 20 elastically restores to the position along the alveolar bone. The expanded state in which the axis of the 1 is perpendicular to the plane P extends, so as to realize the self-locking of the implant 1 . In this self-locking state, the elastic sheet 20 expands and returns to a horizontal state due to its own elasticity, so as to play a retaining role to limit the relative movement of the implant 1 during use, so that the installation of the implant 1 is more stable , to avoid loosening.

In addition, during use, the implant 1 disperses the occlusal force to the left and right gums of the implant 1 through the threaded portion 10 , so that the force is more uniform, thereby improving the service life of the implant 1 .

It should be pointed out that, preferably, the elastic sheet 20 is preferably arranged at the position closest to the distal end of the end portion 11, so that when the implant 1 penetrates the alveolar bone, on the premise of ensuring that the elastic sheet 20 is exposed, the distal end of the implant The part exposed from the alveolar bone should be as short as possible to reduce the influence on the face shape of the implant object.

The shape of the elastic sheet 20 may be, for example, a fan shape, a triangle with chamfered top, a circular arc shape (see FIG. 3 ), and the like, without particular limitation.

The number of elastic pieces 20 may be two or three or more (see FIG. 4 ).

Preferably, the elastic sheet 20 is formed such that the thickness gradually decreases as it progresses toward the radially outer side of the implant 1 , so that the elastic sheet 20 is more easily deformed while ensuring the connection strength with the distal end portion.

Preferably, a plurality of elastic pieces 20 are arranged at the same interval on the periphery of the implant 1 . For example, as shown in FIG. 3 , when three elastic sheets 20 are provided, preferably, the elastic sheets are arranged at a distance of 120 degrees, so that when the elastic sheets 20 are unfolded, the acting force between the elastic sheets 20 and the alveolar bone evenly distributed.

In addition, the elastic sheet 20 may be made of titanium alloy, and is not limited thereto, but may be made of other metals, and further, the material from which the elastic sheet 20 is made may be processed (eg, coating, surface treatment, heat treatment, etc.), In order to make it have greater elasticity and toughness, prevent the elastic sheet from being worn after self-locking, and improve the fatigue life.

In addition, the elastic sheet 20 can also be made of a non-metallic material with good elasticity or the like. And preferably, it is formed of the same material as the end portion 11 .

The above describes the self-locking penetrating implant of the present invention. Since the implant is provided with an elastic sheet that elastically recovers and expands after the implant penetrates the mandible or enters the mucosa of the maxillary sinus, it acts as a retainer to restrict The relative movement of the implant 1 during use makes the installation of the implant 1 more stable and avoids loosening. In addition, during use, the implant 1 disperses the occlusal force to the left and right gums of the implant 1 through the threaded portion 10 , so that the force is more uniform, thereby improving the service life of the implant 1 .

In addition, in the present invention, the tapered thread structure of the threaded portion 10 and the planar structure of the end surface of the end portion 11 result in a large force bearing area of the implant, which is beneficial to uniform stress on the bottom of the implant. In addition, the upper end of the implant is an abutment connected to the gingiva. When the crown is damaged, the crown can be replaced alone, avoiding the inconvenience and pain caused by re-implanting the implant.

The above descriptions are merely examples of the present application, 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 modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the scope of the claims of the present invention.

Claims (7)

1. A self-locking distal penetrating implant, comprising:

a screw part having a screw formed on an outer circumferential surface thereof; and

a distal end portion located at a leading end in an insertion direction of the implant and continuing to the threaded portion; wherein,

an elastically deformable protruding elastic piece is provided on an outer peripheral surface of the tip portion.

2. The implant of claim 1, wherein,

the elastic piece extends in a plane perpendicular to the insertion direction of the implant.

3. The implant of claim 2, wherein,

during insertion of the implant into an object, a portion of the elastic piece at a radially outer side of the implant is elastically deformed toward a screw part side, so that the elastic piece is in a collapsed state of being fitted to an outer circumferential surface of the implant; and is

When the implant penetrates the object, the elastic piece is exposed from the object to be elastically restored to an expanded state extending in the plane.

4. The implant of any one of claims 1 to 3, wherein,

the number of the elastic sheets is more than 2; and is

The elastic pieces are provided at equal intervals around the tip portion.

5. The implant of claim 4, wherein,

the implant is formed in a cylindrical structure, and

an end surface of the tip portion at a side opposite to the threaded portion is formed as a flat surface.

6. The implant of claim 5, wherein,

the implant is formed to have a diameter gradually decreasing from the threaded portion toward the distal end portion.

7. The implant of claim 6, wherein,

the implant further includes an abutment located at a position opposite to the distal end portion of the threaded portion.

Images