A composite abutment implant system for a pourable bone cement

Abstract

This utility model relates to the field of dental implant technology, specifically to a composite abutment implant system capable of being filled with bone cement. The specific technical solution is as follows: A composite abutment implant system capable of being filled with bone cement includes an abutment, which is connected to an implant via a central screw. The central screw has a through-channel, and its sidewall has a through-hole communicating with the screw channel. The implant has several branch channels on its sidewall, which communicate with the main channel on the implant and are perpendicular to the implant's axis. The abutment system disclosed in this utility model allows the bone cement to solidify within the internal channels, avoiding interference with the screw channels and preventing limitations on the abutment connection, while simultaneously increasing the stability of the connection between the implant and the abutment.

Description

Technical Field

[0001] This utility model relates to the field of dental implant technology, specifically to a composite abutment implant system that can be injected with bone cement. Background Technology

[0002] Traditional implants rely on mechanical retention or surface treatments to promote osseointegration, but they are prone to poor initial stability in patients with osteoporosis or insufficient bone mass. Furthermore, current techniques using traditional abutments and screws cannot guide bone cement flow; the implant itself contains only a bone cement channel. During the procedure, subsequent operations must wait for the implant to complete bone cement infusion before proceeding. Moreover, bone cement infusion can interfere with screw channels, restricting abutment connection. Additionally, there is a risk of bone cement leakage or uneven distribution, leading to limited surgical efficiency and even surgical failure.

[0003] Furthermore, although there is a corresponding prior art (application number CN201710104050.8) that discloses setting a grouting hole on the side wall of the implant to form an isolation membrane between the bone cement and the bone tissue, which can effectively prevent the implant from sinking and prolong the service life of the dental implant, the grouting hole is tilted downwards. This causes the bone cement to flow to the lower area of ​​the grouting hole outlet due to gravity, which can easily lead to uneven distribution of bone cement. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a composite abutment implant system that can be infused with bone cement, which enhances the initial stability of the implant and promotes osseointegration.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] This utility model discloses a composite abutment implant system capable of injecting bone cement, including an abutment connected to an implant via a central screw. The central screw has a through-hole with a screw channel and a through hole communicating with the screw channel on its side wall. The side wall of the implant has several branch channels communicating with the main channel on the implant and is perpendicular to the axis of the implant.

[0007] Preferably, the branch channels are arranged in a ring array around the implant.

[0008] Preferably, the through holes are located on the shank of the central screw, and the through holes are arranged in a ring array around the central screw.

[0009] Preferably, bone cement is injected into the central screw using a syringe.

[0010] Preferably, the syringe is provided with an injection tube, one end of which has an external thread on its outer wall, and the central screw has an internal thread in its screw channel that is compatible with the injection tube.

[0011] Preferably, the internal thread in the screw channel of the central screw is disposed in the shank of the central screw, and the injection tube is threadedly connected to the shank of the central screw.

[0012] Preferably, the syringe is provided with an injection tube at its outlet, and a connecting sleeve is fitted and fixed at the outlet end of the injection tube. The inner wall of the connecting sleeve is provided with an internal thread, and the other end of the injection tube is provided with a threaded head, which extends into the connecting sleeve and is threadedly connected to the connecting sleeve.

[0013] Preferably, the connection end between the injection tube and the syringe is provided with a threaded sleeve, and the threaded sleeve is connected to the nozzle of the syringe by a thread.

[0014] Preferably, the syringe is marked with graduation lines.

[0015] This utility model has the following beneficial effects:

[0016] 1. In areas with insufficient bone volume or poor bone quality, bone cement can fill the gap between the implant and the surrounding bone tissue, providing additional mechanical fixation. Moreover, filling the gap between the implant and the bone increases the contact area between the implant and the bone tissue, reduces micromovement between the implant and the bone tissue, promotes better stress distribution, reduces the risk of implant failure, enhances the initial stability of the implant, provides immediate fixation, and creates conditions for immediate implantation.

[0017] 2. Screw channels and through holes are provided on the central screw. Bone cement fills the screw channels, the gap between the central screw and the implant, and the gap between the central screw and the abutment, increasing the connection strength between the central screw and the implant and the abutment. Bone cement can compensate for mismatches or processing errors between the abutment and the implant, simplifying clinical operation. Moreover, the bone cement solidifies in the internal channels, avoiding the situation where the screw channels are affected and the abutment connection is restricted, while increasing the connection stability between the implant and the abutment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model (exploded view, with syringe);

[0019] Figure 2 This is a cross-sectional view of the present invention (without the syringe);

[0020] Figure 3 This is a cross-sectional view of the central screw;

[0021] Figure 4 This is a cross-sectional view of the implant;

[0022] In the diagram: 1. Abutment; 2. Central screw; 3. Implant; 4. Screw channel; 5. Through hole; 6. Branch channel; 7. Main channel; 8. Syringe; 9. Injection tube; 10. Connecting sleeve; 11. Threaded head; 12. Threaded sleeve; 13. Hexagonal drive groove; 14. Infusion chamber; 15. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Unless otherwise specified, the technical means used in the implementation examples are conventional means well known to those skilled in the art.

[0025] refer to Figures 1-4 This utility model discloses a composite abutment implant system capable of injecting bone cement, comprising an abutment 1, wherein the abutment 1 is connected to an implant 3 via a central screw 2, the central screw 2 having a through-hole 4, i.e., the screw channel is axially oriented, and the side wall of the central screw 2 has through holes 5 communicating with the screw channel 4, the number of through holes being unlimited and set according to actual needs; the side wall of the implant 3 has several branch channels 6, the branch channels 6 communicating with the main channel 7 on the implant 3, and the branch channels 6 being perpendicular to the axis of the implant 3, i.e., as shown in the figure. Figure 4 As shown, the branch channels are arranged laterally and communicate with the main channel. This laterally arranged branch channel facilitates the formation of a uniform osseointegration area around the implant, providing more balanced initial mechanical support, especially suitable for immediate implantation. The abutment contains a perfusion chamber 15, with an opening at the top for inserting the injection tube and a central screw passing through at the bottom, thus connecting and fixing the abutment and implant via the central screw. The screw channel on the central screw communicates with the main channel of the implant and the perfusion chamber of the abutment. Through the injected bone cement, the bone cement is evenly distributed at the interface between the implant and bone tissue, and at the interface between the central screw and the abutment and implant, forming a stable structure after solidification.

[0026] Furthermore, the branch channels 6 are arranged in a circular array around the implant 3. Also, the through holes 5 are located on the shank of the central screw 2, and are arranged in a circular array around the central screw 2. It should be noted that the head of the central screw does not have through holes or threads, but the head of the central screw has an internal hexagonal drive groove 14 for easy tightening.

[0027] Furthermore, bone cement is injected into the central screw 2 using a syringe 8. The syringe 8 is equipped with an injection tube 9, one end of which has an external thread. The screw channel 4 of the central screw 2 has an internal thread that mates with the injection tube 9, allowing for a threaded connection between the injection tube and the central screw. This increases the stability of the bone cement injection process and the stability of the injection tube, ensuring that the bone cement does not overflow from the top of the central screw during injection. Specifically, the internal thread in the screw channel 4 of the central screw 2 is located within the shank of the central screw 2, and the injection tube 9 is threadedly connected to the shank of the central screw 2.

[0028] Furthermore, an injection tube 10 is provided at the outlet of the syringe 8. A connecting sleeve 11 is fitted and fixed at the outlet end of the injection tube 10. An internal thread is provided on the inner wall of the connecting sleeve 11. A threaded head 12 is provided at the other end of the injection tube 9. The threaded head 12 extends into the connecting sleeve 11 and is threadedly connected to the connecting sleeve 11, thereby facilitating the installation and removal of the injection tube. The injection tube can be a flexible tube, and its length can be set according to actual needs.

[0029] Furthermore, the connection end between the injection tube 10 and the syringe 8 is provided with a threaded sleeve 13, which is threadedly connected to the nozzle of the syringe 8, thereby facilitating the installation and removal of the injection tube. The syringe 8 is marked with graduations to indicate the amount of bone cement injected.

[0030] According to the abutment system disclosed in this utility model, the flow path of bone cement is as follows: syringe → screw channel of central screw → interface between central screw and abutment and implant, main channel of implant → branch channel → bone-implant interface.

[0031] When using this invention, the implant is first inserted into the jawbone preparation hole, then the abutment is installed, the central screw is screwed in and tightened with a torque wrench, the injection tube on the syringe containing bone cement is inserted into the central screw and tightened, and the bone cement is injected under pressure. The bone cement is evenly distributed through the channel at the implant-bone interface and the interface between the central screw, the abutment and the implant. After curing, a stable structure is formed as a whole.

[0032] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A composite abutment implant system capable of being injected with bone cement, characterized in that: The implant includes a base (1), which is connected to the implant (3) via a central screw (2). A screw channel (4) is provided through the central screw (2). A through hole (5) communicating with the screw channel (4) is provided on the side wall of the central screw (2). Several branch channels (6) are provided on the side wall of the implant (3). The branch channels (6) are connected to the main channel (7) on the implant (3). The branch channels (6) are perpendicular to the axis of the implant (3).

2. The composite abutment implant system capable of injecting bone cement according to claim 1, characterized in that: The branch channels (6) are arranged in a ring array around the implant (3).

3. The composite abutment implant system capable of injecting bone cement according to claim 2, characterized in that: The through hole (5) is provided on the rod of the central screw (2), and the through hole (5) is arranged in a ring array around the central screw (2).

4. A composite abutment implant system capable of injecting bone cement according to any one of claims 1 to 3, characterized in that: Bone cement is injected into the central screw (2) using a syringe (8).

5. The composite abutment implant system capable of injecting bone cement according to claim 4, characterized in that: The syringe (8) is provided with an injection tube (9), and an external thread is provided on the outer wall of one end of the injection tube (9). An internal thread is provided in the screw channel (4) of the central screw (2) and is adapted to the injection tube (9).

6. The composite abutment implant system capable of injecting bone cement according to claim 5, characterized in that: The internal thread in the screw channel (4) of the central screw (2) is set in the rod of the central screw (2), and the injection tube (9) is threadedly connected to the rod of the central screw (2).

7. The composite abutment implant system capable of injecting bone cement according to claim 5, characterized in that: The syringe (8) has an injection tube (10) at its outlet. A connecting sleeve (11) is fitted and fixed at the outlet end of the injection tube (10). An internal thread is provided on the inner wall of the connecting sleeve (11). A threaded head (12) is provided at the other end of the injection tube (9). The threaded head (12) extends into the connecting sleeve (11) and is threadedly connected to the connecting sleeve (11).

8. The composite abutment implant system capable of injecting bone cement according to claim 7, characterized in that: The connection end between the injection tube (10) and the syringe (8) is provided with a threaded sleeve (13), and the threaded sleeve (13) is connected to the nozzle of the syringe (8) by a thread.

9. The composite abutment implant system capable of injecting bone cement according to claim 4, characterized in that: The syringe (8) is marked with graduation lines.

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