Self-locking penetrating implants and their implantation methods

Abstract

The present invention provides a self-locking penetrating implant and an implantation method thereof. The implant includes: a threaded portion having threads formed on its outer peripheral surface; and an end portion located at a guide end in the insertion direction of the implant and connected to the threaded portion; wherein, a protruding elastic sheet capable of elastic deformation is provided on the outer peripheral surface of the end portion.

Description

Technical Field

[0001] This invention relates to the field of dental medical devices, specifically to a self-locking penetrating implant and its implantation method in the field of artificial tooth implantation. Background Technology

[0002] With decades of advancements in clinical practice and increased public awareness of aesthetics, dental implants have become a key restorative technique for missing teeth, offering advantages such as aesthetics, comfort, and strong function. However, they require relatively high-quality bone support. In many cases of implant failure, insufficient alveolar bone height leading to inadequate implant-bone integration and subsequent implant loosening or failure is a common cause. Therefore, in situations with poor alveolar bone conditions, strategies to prevent implant loosening through bone integration have become crucial for improving the long-term success rate of dental implants.

[0003] During chewing, implants are subjected to periodic alternating forces of varying magnitudes, directions, and types, especially the pulling force when eating sticky foods. These forces can cause minute relative displacements in the implants. However, in cases of poor alveolar bone condition, the osseointegration force is also relatively weak. In such cases, prolonged exposure to these micro-movements may lead to bone loss or material loss at the alveolar bone interface, resulting in implant loosening and significantly reducing the implant's fatigue life.

[0004] Current technology indicates that insufficient alveolar bone condition and micromovement damage are significant factors leading to osseointegration failure. Dental implants offer clear advantages over other implanted prostheses and are becoming increasingly widely used. However, they still have the following drawbacks:

[0005] Because the fixation between the implant and the alveolar bone relies solely on the lower part of the implant extending into the alveolar bone, it is unusable for patients with insufficient alveolar bone height, or has a poor prognosis and is prone to failure. Furthermore, implants are susceptible to causing surrounding bone resorption, leading to implant loosening and ultimately implant failure. Moreover, the perpendicularity of the implant to the alveolar bone can cause axial mismatch with some crowns, forcing a short upper portion of the implant and affecting the crown's fixation and stability. Summary of the Invention

[0006] In view of the above, the present invention is proposed to provide a self-locking penetrating implant and its implantation method, which can make the connection between the implant and the alveolar bone firm and reliable, and can prevent the implant from loosening and falling out.

[0007] According to one aspect of the present invention, a self-locking penetrating implant is provided, comprising:

[0008] A threaded portion, wherein a thread is formed on the outer peripheral surface of the threaded portion; and

[0009] The distal end, located at the guide end in the insertion direction of the implant, and connected to the threaded portion; wherein,

[0010] The outer peripheral surface of the end portion is provided with a protruding elastic sheet capable of elastic deformation.

[0011] Furthermore, the elastic sheet extends in a plane perpendicular to the insertion direction of the implant.

[0012] Furthermore, during the insertion of the implant into the object, the portion of the elastic sheet located radially outward of the implant elastically deforms towards the threaded portion, moving the elastic sheet from a state of being in contact with the outer peripheral surface of the implant and closing outward; and

[0013] When the implant penetrates the object, the elastic sheet is exposed from the object and elastically returns to its unfolded state, extending within the plane.

[0014] Furthermore, the elastic sheet is formed in two or more parts; and

[0015] The elastic sheets are arranged at equal intervals around the periphery of the end portion.

[0016] Furthermore, the implant is formed into a columnar structure, and

[0017] The end face of the end portion opposite to the threaded portion is formed as a plane.

[0018] Furthermore, the implant is formed such that its diameter gradually decreases from the threaded portion to the distal portion.

[0019] Furthermore, the implant also includes an abutment located at the opposite position of the threaded portion and the end portion.

[0020] According to another aspect of the present invention, a method for implanting a self-locking penetrating implant is provided, comprising:

[0021] Clamp a portion of the elastic sheet of the implant according to one aspect described above at its radially outer side and pull it toward the threaded side so that the elastic sheet is in a retracted state that conforms to the outer peripheral surface of the implant;

[0022] Insert the elastic piece into the object using the distal end as a guide until the elastic piece protrudes from the object; and

[0023] Release the clamping to allow the elastic sheet to elastically return to its unfolded state, extending in a plane perpendicular to the insertion direction of the implant.

[0024] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments, and the beneficial effects of the present invention will be further clarified. Attached Figure Description

[0025] The accompanying drawings, which are provided to further illustrate the invention and form part of this invention, are for illustrative purposes only and do not constitute an undue limitation of the invention.

[0026] Figure 1 This 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;

[0027] Figure 2 This is a bottom view of a self-locking penetrating implant at the end according to a preferred embodiment of the present invention in its unfolded state;

[0028] Figure 3 This is a bottom view of a modified example of a self-locking penetrating implant at the end according to a preferred embodiment of the present invention in its unfolded state;

[0029] Figure 4 This is a bottom view of another variation of a self-locking penetrating implant at the end according to a preferred embodiment of the present invention in its unfolded state. Detailed Implementation

[0030] The technical solution of the present invention will now be clearly and completely described with reference to specific embodiments and corresponding drawings. Obviously, the described embodiments are only some preferred embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0031] The following is combined Figure 1-4 The basic structure of a self-locking penetrating implant according to an embodiment of the present invention is described.

[0032] Figure 1 This is a side view of a self-locking penetrating implant at the end according to a preferred embodiment of the present invention in a retracted state; Figure 2 This is a bottom view of a self-locking penetrating implant at the end according to a preferred embodiment of the present invention in its unfolded state; Figure 3 This is a bottom view of a self-locking penetrating implant at the end, in its unfolded state, according to a preferred embodiment of the present invention. Figure 4 This is a bottom view of a second variation of a preferred embodiment of the present invention, showing a self-locking penetrating implant in its unfolded state.

[0033] like Figure 1As shown, the end-locking penetrating implant (hereinafter referred to as "implant") 1 according to an embodiment of the present invention is generally formed into a columnar structure.

[0034] The implant 1 includes an integrally formed abutment 12, a threaded portion 10 and a tip portion 11 along the axial direction (i.e., the insertion direction of the implant 1), and its length is designed to penetrate the alveolar bone or enter the maxillary sinus mucosa when the implant 1 is inserted (the following only takes penetrating the alveolar bone as an example), and the diameter of the implant 1 gradually decreases from the threaded portion 10 to the tip portion 11.

[0035] Abutment 12 is used to fix the crown and connect it to the gingiva.

[0036] The threaded portion 10 is connected to the base and is formed as a tapered body whose diameter gradually decreases with distance from the base 12 along the axial direction. A convex thread 101 is provided on the outer periphery of the threaded portion 10. The surface of the convex thread 101 can be machined (e.g., coated, surface treated, heat treated, etc.) to improve the bonding strength between the convex thread 101 and the bone and increase its interlocking load-bearing capacity.

[0037] like Figure 1 As shown, the end of the implant 1 opposite to the crown abutment 12 is the distal end 11, which is the guide end of the implant 1 in the insertion direction and is connected to the threaded portion 10. An elastic sheet 20 protruding from the peripheral surface of the distal end 11 is provided on the outer periphery of the distal end 11.

[0038] Specifically, the root of the elastic sheet 20 is connected to the outer peripheral surface of the end portion 11 of the implant 1, for example, it can be integrally formed. Furthermore, the elastic sheet 20 is formed to extend along a plane P perpendicular to the axis of the implant 1. The shape of the elastic sheet 20 in this plane P can be formed as a blade shape similar to a propeller blade (see...). Figure 2 ).

[0039] The elastic sheet 20 is formed to be elastic, enabling it to deform and recover elastically. During the implantation process of the implant 1 into the alveolar bone, the radially outer portion of the elastic sheet can face towards the threaded portion 10 of the implant 1. Figure 1The upper side of the elastic piece 20 is deformed so that the entire elastic piece 20 approaches and conforms to the outer peripheral surface of the protruding thread 101. This state of the elastic piece 20 is called the retracted state. When the implant 1 has penetrated the alveolar bone, the elastic piece 20 extends out of the alveolar bone and is exposed on the side of the alveolar bone opposite to the side with the attached tooth. At this time, the elastic piece 20 elastically returns to the unfolded state, extending along the plane P perpendicular to the axis of the implant 1, thereby achieving self-locking of the implant 1. In this self-locking state, the elastic piece 20 unfolds and returns to the horizontal state due to its own elasticity, thereby playing a role in fixation to limit the relative movement of the implant 1 during use, making the installation of the implant 1 more stable and avoiding loosening.

[0040] In addition, during use, the occlusal force of the implant 1 is distributed to the left and right sides of the dental arch through the threaded portion 10, making the force more even and thus improving the service life of the implant 1.

[0041] It should be noted that, preferably, the elastic sheet 20 is located at the position closest to the end of the distal portion 11, so that when the implant 1 penetrates the alveolar bone, the portion of the distal portion of the implant exposed from the alveolar bone is as short as possible while ensuring that the elastic sheet 20 is exposed, so as to reduce the impact on the facial shape of the implant.

[0042] The elastic sheet 20 can be, for example, fan-shaped, triangular with a chamfered top, or arc-shaped (see...). Figure 3 Shapes such as ) are allowed without special restrictions.

[0043] The number of elastic sheets 20 can be 2 or more (see [reference]). Figure 4 ).

[0044] Preferably, the elastic sheet 20 is formed such that its thickness gradually decreases as it travels radially outward toward the implant 1, so that the elastic sheet can be more easily deformed while ensuring the connection strength with the end portion.

[0045] Preferably, a plurality of elastic sheets 20 are arranged at equal intervals around the periphery of the implant 1. For example, see Figure 3 As shown, when three elastic sheets 20 are provided, preferably, the elastic sheets are spaced 120 degrees apart so that when the elastic sheets 20 are unfolded, the force between the elastic sheets 20 and the alveolar bone is evenly distributed.

[0046] Furthermore, the elastic sheet 20 can be made of titanium alloy, but is not limited to this, and can be made of other metals. In addition, the material used to make the elastic sheet 20 can be processed (e.g., coating, surface treatment, heat treatment, etc.) to give it greater elasticity and toughness, prevent wear after the elastic sheet self-locks, and improve fatigue life.

[0047] Furthermore, the elastic sheet 20 can also be made of a non-metallic material or the like with good elasticity. Preferably, it is formed of the same material as the end portion 11.

[0048] The above describes the self-locking penetrating implant of the present invention. Because it is equipped with an elastic flap that expands after penetrating the mandible or entering the maxillary sinus mucosa, it serves to retain the implant and limit relative movement during use, making the implant installation more stable and preventing loosening. Furthermore, during use, the occlusal force is distributed to the left and right sides of the implant 1's gums through the threaded portion 10, resulting in more even force distribution and thus improving the lifespan of the implant 1.

[0049] Furthermore, in this invention, the tapered thread structure of the threaded portion 10 and the planar structure of the end face of the end portion 11 result in a large force-bearing area for the implant, which facilitates uniform force distribution at the base of the implant. Additionally, the upper end of the implant serves as an abutment that connects to the gingiva, allowing for individual replacement of the crown when it is damaged, thus avoiding the inconvenience and pain associated with re-implantation.

[0050] According to another aspect of the present invention, a method for implanting a penetrating implant with a self-locking end is provided.

[0051] The implantation method includes: clamping the radially outer end of the elastic sheet 20 of the implant 1 described above and pulling it toward the abutment 12 so that the elastic sheet 20 is in a closed state that is in close contact with the outer peripheral surface of the implant 1; then, inserting the implant in the closed state into the prepared hole with the end portion 11 as the front end until the implant penetrates the mandible or enters the maxillary sinus mucosa so that the elastic sheet 20 is exposed; then, releasing the clamping, at this time, since the elastic sheet is exposed from the hole and is no longer constrained by external force, the elastic sheet elastically recovers to the unfolded state along the plane P perpendicular to the axis of the implant due to its own elasticity, thus achieving self-locking of the implant 1.

[0052] Using the implant placement method of the embodiments of the present invention described above, after the implant penetrates the mandible or enters the maxillary sinus mucosa, the elastic sheet recovers its elasticity and unfolds, thereby playing a role in fixation to limit the relative movement of the implant 1 during use, making the installation of the implant 1 more stable and preventing loosening. In addition, during use, the occlusal force of the implant 1 is distributed to the left and right sides of the implant 1's alveolar bone through the threaded portion 10, making the force distribution more uniform and thus improving the service life of the implant 1.

Claims

1. A penetrating implant with a self-locking end, characterized in that, include: A threaded portion, wherein a thread is formed on the outer peripheral surface of the threaded portion; and The distal end, located at the guide end in the insertion direction of the implant, and connected to the threaded portion; wherein, The outer peripheral surface of the end portion is provided with a protruding elastic sheet capable of elastic deformation, the root of which is integrally formed with the outer peripheral surface of the end portion. The elastic sheet extends in a plane perpendicular to the insertion direction of the implant. During the insertion of the implant into the object, the portion of the elastic sheet located radially outward of the implant elastically deforms toward the threaded portion, thereby placing the elastic sheet in a retracted state that conforms to the outer peripheral surface of the implant. and When the implant penetrates the object, the elastic sheet is exposed from the object and elastically returns to its unfolded state, extending within the plane.

2. The implant as described in claim 1, characterized in that, in, The elastic sheet is formed in two or more parts; and The elastic sheets are arranged at equal intervals around the periphery of the end portion.

3. The implant as described in claim 2, characterized in that, in, The implant is formed into a columnar structure, and The end face of the end portion opposite to the threaded portion is formed as a plane.

4. The implant as described in claim 3, characterized in that, in, The implant is formed such that its diameter gradually decreases from the threaded portion to the distal portion.

5. The implant according to claim 4, characterized in that, in, The implant also includes an abutment located at the opposite position of the threaded portion to the end portion.

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