Split angle type implant

Abstract

The utility model discloses a split angle type implant which comprises a connecting body, an internal implant and a neck ring, the connecting body is in a cylinder shape, the peripheral wall of the connecting body is divided into a smooth section and a threaded section, the internal implant is fixed on the smooth section of the connecting body through a connecting piece, and the neck ring is screwed on the threaded section of the connecting body; wherein the connecting body is provided with a left semi-cylinder and a right semi-cylinder which are formed by cutting along the longitudinal section of the connecting body, and through holes which penetrate through the height of the left semi-cylinder and the right semi-cylinder and are provided with internal threads are formed in the left semi-cylinder and the right semi-cylinder; the internal implant comprises a left implant body and a right implant body which are provided with internal thread mounting holes, the left implant body and the right implant body are respectively placed on the left semi-cylinder and the right semi-cylinder, the connecting piece enters the mounting holes through the through holes and is screwed down to realize the fixation of the internal implant body and the connecting body, and the included angle between the left implant body and the right implant body after fixation is an obtuse angle. According to the implant disclosed by the utility model, the retention force of the implant is enhanced in an angle anchoring manner, and the defect that an implantation operation is carried out when the vertical bone mass is less than 4mm is overcome.

Description

Technical Field

[0001] The utility model relates to a split angle implant and belongs to the technical field of dental implantation. Background Art

[0002] Dental implants are a method of restoring missing teeth that uses a lower structure implanted in bone tissue to support and retain the upper dental restoration. The choice of implants is crucial in this process.

[0003] There are many factors to consider when placing an implant, and bone mass is one of the most important ones. Depending on the implant site, implant material, and number of implants, the size and model of the implant will vary. Different diameters and lengths will require different bone mass. There are also different solutions for insufficient bone mass. For insufficient horizontal bone mass, GBR (guided bone regeneration), bone splitting, and guided tissue regeneration can be performed. For insufficient vertical bone mass, it can be solved by maxillary sinus lift, transzygomatic, changing the axis, or implanting short implants.

[0004] The maxillary posterior area is a common area with insufficient vertical bone volume. There is a conical cavity in the maxillary body, which is the maxillary sinus. The maxillary sinus is adjacent to the roots of the maxillary posterior teeth. Due to the different anatomy of the maxillary sinus and the increase of age, the maxillary sinus will be pneumatized. Therefore, it is common in clinical practice that patients have sufficient horizontal bone volume but insufficient vertical bone volume in the maxillary posterior area after missing teeth in the maxillary posterior area. Taking ITI implants as an example, the current clinical requirement for implant placement in the maxillary posterior area is usually a diameter of 4.8mm or more. If titanium zirconium implants are used, the diameter can be reduced by one level (4.1mm), and the length (or height) requirement is 8mm or more. However, the vertical bone volume in this area is usually less than 8 mm. In clinical practice, maxillary sinus lift, short implants (<8 mm) or ultra-short implants (<4 mm) are often used to obtain sufficient bone volume, but these methods have more or less shortcomings: the maxillary sinus lift method may cause complications such as maxillary sinus perforation and maxillary sinusitis during and after the operation; and the use of short implants makes it difficult to obtain sufficient initial stability.

[0005] In order to safely and effectively implant an implant at a site with sufficient horizontal bone volume and insufficient vertical bone volume, obtain sufficient initial stability, and reduce surgical trauma and complications, the present application designs a split implant using angle anchoring. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a split angle implant, which enhances the retention force of the implant by way of angle anchoring and improves the deficiency of performing implant surgery when the vertical bone volume is less than 4mm.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] The split angle implant comprises a connector, an implant and a neck ring, wherein the connector is in a cylindrical shape, and its outer peripheral wall is divided into a smooth section and a threaded section, the implant is fixed to the smooth section of the connector through a connector, and the neck ring is screwed on the threaded section of the connector; wherein,

[0009] The connector has a left semi-cylinder and a right semi-cylinder cut along its longitudinal section, and each of the left semi-cylinder and the right semi-cylinder is provided with a through hole penetrating the height thereof and having an internal thread;

[0010] The implant includes a left implant and a right implant, and both the left implant and the right implant are provided with mounting holes with internal threads;

[0011] The left implant and the right implant are placed on the left semi-cylinder and the right semi-cylinder respectively, and the connector enters the mounting hole through the through hole and is tightened to fix the implant and the connector. After the implant and the connector are fixed, the angle between the left implant and the right implant is an obtuse angle.

[0012] Furthermore, after the implant and the connector are fixed, the angle between the left implant and the right implant is 120-150°.

[0013] Preferably, the connecting piece is a screw or a bolt.

[0014] The implant of the utility model is preferably made of titanium alloy which has good biocompatibility with bone tissue.

[0015] Compared with the prior art, the utility model adopts a split design for both the connector and the implant, and limits the angle between the left implant and the right implant that constitute the implant after the connector and the implant are fixed, and then uses a neck ring to tighten the left semi-cylinder and the right semi-cylinder that constitute the connector. The angle formed by the implant and the connector can have a restrictive effect on the implant, especially to restrict the vertical movement, and can provide sufficient initial stability for the implantation of the implant. In this way, the implant has lower requirements for the vertical height of the alveolar bone, and can meet the implantation in various scenarios with insufficient alveolar bone volume. After the surface of the implant and the connector is processed (SLA / hydrophilic surface treatment technology / laser etching technology / anodizing technology), the bone integration effect of the implant can also be guaranteed. The split design can also make the placement of the implant simpler, enhance the retention force of the implant with insufficient bone volume, and enable it to be used as an implant for implant surgery in patients with alveolar bone height ≤4mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of an implementation mode of the split angle implant described in the utility model.

[0017] Figure 2 for Figure 1Top view of the embodiment.

[0018] Figure 3 for Figure 1 A front view of the connector in the embodiment.

[0019] The numbers in the figure are:

[0020] 1 implant, 101 left implant, 102 right implant, 2 connector, 201 left semi-cylinder, 202 right semi-cylinder, 3 neck ring, 4 connector. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below in conjunction with the accompanying drawings. It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0022] See also Figures 1 to 3 The split angle implant described in the utility model includes a connector 2, an implant 1 and a neck ring 3 arranged on the connector 2. The connector 2 is in the shape of a column, and its outer peripheral wall is divided into a smooth section and a threaded section, wherein the upper part is the smooth section and the lower part is the threaded section. The implant 1 is fixed to the smooth section of the connector 2 through a connector 4; the neck ring 3 is annular, and its inner diameter matches the outer diameter of the connector 2. An inner thread matching the thread on the outer peripheral wall of the connector 2 is provided on the inner wall surface of the neck ring 3, and the neck ring 3 is screwed on the threaded section of the connector 2. In specific applications, the smooth section is located inside the bone, and the threaded section is exposed outside the bone.

[0023] Specifically, the connector 2 has a left semi-cylinder 201 and a right semi-cylinder 202 cut along its longitudinal section. The left semi-cylinder 201 and the right semi-cylinder 202 are symmetrical structures. A through hole is respectively provided on the left semi-cylinder 201 and the right semi-cylinder 202 to penetrate the height thereof for the connector 4 to pass through, and a thread is provided in the through hole. The implant 1 includes a left implant 101 disposed on the left semi-cylinder 201 and matched with the top surface of the left semi-cylinder 201, and a right implant 102 disposed on the right semi-cylinder 202 and matched with the top surface of the right semi-cylinder 202. A mounting hole with an internal thread is respectively provided on the left implant 101 and the right implant 102, and the mounting hole is a blind hole; wherein the axis of the mounting hole on the left implant 101 coincides with the axis of the through hole on the left semi-cylinder 201, and the axis of the mounting hole on the right implant 102 coincides with the axis of the through hole on the right semi-cylinder 202. The surface of the connector 4 has an external thread matching the internal thread in the through hole and the mounting hole. The connector 4 is passed through the through hole into the mounting hole and tightened to achieve the connection and fixation between the implant 1 and the connector 2. After the connector 2 and the connector 2 are fixed, the angle formed by the left implant 101 and the right implant 102 is an obtuse angle. The neck ring 3 is screwed onto the threaded section of the connector 2 to combine the left semi-cylinder 201 and the right semi-cylinder 202 into one, thereby fixing the two.

[0024] Preferably, the left implant 101 and the right implant 102 are rectangular in shape, and more preferably, the lengths of the left implant 101 and the right implant 102 are equal. The sum of the lengths of the left implant 101 and the right implant 102 should be greater than the diameter of the connector 2.

[0025] Furthermore, after the implant 1 and the connector 2 are fixed, the angle formed by the left implant 101 and the right implant 102 constituting the implant 1 is 120-150°. This angle setting makes it easier to prepare the hole and insert the implant 1 component, and the angle close to vertical can provide greater movement restriction.

[0026] Preferably, the connecting member 4 can be a screw or a bolt. The number of the connecting members 4 is usually two.

[0027] The implant of the utility model is preferably made of titanium alloy which has good biocompatibility with bone tissue.

[0028] When the implant of the utility model is used in a specific implantation operation, the hole preparation and implantation method are as follows:

[0029] Under routine anesthesia, the flap is incised and opened in the surgical area. After the bone surface of the exposure site is fixed with a ball drill (pilot drill), the hole expansion drill is used to prepare step by step to the lowest point of the connection between the preset connector 2 and the implant 1. At this time, the prepared implantation socket is used to place the connector 2 (composed of the left semi-cylinder 201 and the right semi-cylinder 202). This implantation socket is called the first implantation socket. The diameter of the first implantation socket must be greater than the length of the left implant 101 or the right implant 102 (the length of the left implant 101 is equal to the length of the right implant 102), and the sum of the lengths of the left implant 101 and the right implant 102 must be greater than the diameter of the first implantation socket; then two more implantation sockets are prepared, namely the second implantation socket and the third implantation socket, which are used to place the left implant 101 and the right implant 102 respectively. Because these two implantation sockets are at an angle close to vertical to the first implantation socket, an angled ultrasonic bone knife is required to prepare the bone cutting. The implant described in the present invention is anchored at an angle, so the second implantation hole and the third implantation hole are not required to have the same level difference as the connector 2, but are mainly based on having enough space to implant the left implant 101 or the right implant 102. After the three implantation holes are prepared, the left implant 101 and the right implant 102 are implanted, and after adjusting them to the appropriate position, the left implant 101 is connected to the left semi-cylinder 201, and the right implant 102 is connected to the right semi-cylinder 202 using the connector 4, and then the tops of the left semi-cylinder 201 and the right semi-cylinder 202 are adjusted to the same level, and the rectangular surfaces of the two semi-cylinders are fitted together, and finally the neck ring 3 is screwed on the threaded section at the bottom of the two semi-cylinders to achieve the fixation of the connector 2, and the final implantation is completed.

Claims

1. Split angle implant, characterized by: The invention comprises a connector (2), an implant (1) and a collar (3); the connector (2) is cylindrical in shape, and its outer peripheral wall is divided into a smooth section and a threaded section; the implant (1) is fixed to the smooth section of the connector (2) through a connector (4); and the collar (3) is screwed onto the threaded section of the connector (2); wherein: The connector (2) comprises a left semi-cylinder (201) and a right semi-cylinder (202) cut along its longitudinal section, and each of the left semi-cylinder (201) and the right semi-cylinder (202) is provided with a through hole penetrating the height thereof and having an internal thread; The implant (1) comprises a left implant (101) and a right implant (102), and both the left implant (101) and the right implant (102) are provided with mounting holes with internal threads; The left implant (101) and the right implant (102) are respectively placed on the left semi-cylinder (201) and the right semi-cylinder (202); the connecting piece (4) enters the mounting hole through the through hole and is tightened to fix the implant (1) and the connector (2); after the implant (1) and the connector (2) are fixed, the angle between the left implant (101) and the right implant (102) is an obtuse angle.

2. The split angle implant according to claim 1, characterized in that: After the implant (1) and the connector (2) are fixed, the angle between the left implant (101) and the right implant (102) is 120-150°.

3. The split angle implant according to claim 1 or 2, characterized in that: The connecting piece (4) is a screw or a bolt.

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