Implant for maxillary sinus area of posterior maxillary area

Abstract

The utility model provides an implant for a maxillary sinus area in a posterior maxillary area, which relates to the field of oral implantation and comprises an implant body, an implant abutment, a retaining screw and a sealing component. The penetrating channel sequentially comprises a connecting section, a fastening section and a sealing section from top to bottom, the connecting section, the fastening section and the sealing section are communicated with one another, the upper side of the fastening section is a first smooth section, the lower side of the fastening section is a first threaded section, and the sealing section sequentially comprises a second smooth section, a second threaded section and a conical section from top to bottom; the bottom of the implant abutment is matched with the connecting area, a through screw hole is formed in the middle of the implant abutment, the retention screw is arranged in the screw hole, the lower end of the retention screw penetrates through the screw hole and then is in threaded connection with the first threaded section, and the sealing assembly is arranged in the sealing section. The implant can solve the problem that flushing treatment is inconvenient after maxillary sinus infection, so that the tooth implantation efficiency and effect are improved, and the discomfort of a patient is reduced.

Description

Technical Field

[0001] This utility model relates to the field of oral implant technology, specifically to an implant for the maxillary sinus region in the posterior maxillary region. Background Technology

[0002] Maxillary sinus implants are implants used to repair maxillary bone defects. They are typically made of titanium alloy and integrate with bone tissue to provide stable support and fixation for the implant. Maxillary sinusitis is a complication that occurs after maxillary sinus implantation, caused by factors such as infection, sinus membrane damage, or abnormal implant placement. Maxillary sinusitis not only easily leads to infection of adjacent tissues but also easily causes implant loosening or poor sinus membrane healing, and in severe cases, it can even lead to implant failure. Chinese patent document CN220404159U discloses a dental implant system for maxillary sinus lift surgery. It leaves a 0.2mm gap between the implant and the cover screw for installing an absorbable mesh. The absorbable mesh covers the bone plane to fix the implant and avoid the risk of maxillary sinus membrane rupture. At the same time, it uses absorbable mesh to reduce surgical wounds, facilitate postoperative soft tissue healing, shorten the number of surgeries and time, and improve patient experience. In addition, it has a rounded bone-friendly design at the bottom of the implant to prevent maxillary sinus mucosa penetration. Although the incidence of maxillary sinus infection and bone augmentation material infection after maxillary sinus floor lift surgery is low, there is still a risk of maxillary sinus infection. Furthermore, after maxillary sinus infection occurs, the area near the maxillary sinus of the implant system cannot be flushed (the implant must be completely removed before flushing can be performed), which can lead to poor maxillary sinus healing, prolong the treatment period for maxillary sinus infection, and complicate the treatment process. Utility Model Content

[0003] To address the problems existing in the prior art, the purpose of this utility model is to provide an implant for the maxillary sinus region in the posterior maxillary area. This implant can effectively overcome the problem of inconvenient irrigation treatment after maxillary sinus infection, improve the treatment efficiency and effect of maxillary sinus infection, and avoid infection deterioration. At the same time, the implant has a stable structure and good biocompatibility, which can effectively promote osseointegration and improve the success rate of implantation in the posterior maxillary region and patient comfort.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] An implant for the maxillary sinus region in the posterior maxillary region includes: an implant body, an implant abutment, a retention screw, and a sealing component. The implant body is a cylindrical structure with a through channel in its middle. The through channel consists of a connecting section, a fastening section, and a sealing section from top to bottom, and these sections (i.e., the connecting section, fastening section, and sealing section) are interconnected. The fastening section has a first smooth section on its upper side and a first threaded section on its lower side. The sealing section consists of a second smooth section, a second threaded section, and a tapered section from top to bottom. The bottom of the implant abutment matches the connecting area, and a through screw hole is opened in the middle of the implant abutment. The retention screw is located in the screw hole, and its lower end passes through the screw hole and is threadedly connected to the first threaded section. The sealing component is located in the sealing section.

[0006] Based on further optimization of the above scheme, the implant abutment includes a connecting part, a transgingival part and a retention part from bottom to top, and the connecting part is snapped into the connecting segment; a restorative shoulder is provided at the junction of the transgingival part and the retention part, and the retention part is a frustum-shaped structure that is smaller at the top and larger at the bottom.

[0007] Based on further optimization of the above scheme, the length of the planting body is 10-13 mm and the diameter is 4.5-5.5 mm.

[0008] Based on further optimization of the above scheme, the length of the retaining screw is 7-10mm.

[0009] Based on further optimization of the above scheme, the diameter of the first smooth section, the outer diameter of the first threaded section, and the diameter of the second smooth section are the same; the outer diameter of the second threaded section is smaller than the outer diameter of the first threaded section.

[0010] Based on further optimization of the above scheme, the sealing assembly includes a sealing screw and a conical sealing block. The conical sealing block is fixedly connected to the bottom end of the sealing screw, and the longitudinal section of the conical sealing block is a funnel-shaped structure with a larger top and a smaller bottom. The conical sealing block and the conical segment are correspondingly arranged. The nut segment of the sealing screw is correspondingly arranged to the second smooth segment, and the threaded segment of the sealing screw is correspondingly arranged to the second threaded segment.

[0011] Based on further optimization of the above scheme, the maximum diameter (i.e., the upper diameter) of the conical sealing block is smaller than the inner diameter of the second threaded section; the height of the conical sealing block is 2-3 mm, and its taper angle is 4°-6°.

[0012] The following are the technical effects of this utility model:

[0013] This invention achieves sealing of the bottom of the implant body through the cooperation between the sealing component and the sealing section, ensuring the airtightness of the implant body; the connection between the implant abutment and the implant body is completed by the retention screw, ensuring the stability of the implant abutment. When maxillary sinus infection occurs and it is necessary to irrigate the area near the maxillary sinus of the implant root, only the retention screw and sealing component need to be removed. The through-channel can be used to irrigate and drain the implant root apex and the infected area of ​​the maxillary sinus, without disassembling the implant body. This effectively simplifies the treatment process of maxillary sinusitis, reduces patient discomfort, and improves the efficiency and effectiveness of maxillary sinusitis treatment during dental implantation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the dental implant of this utility model.

[0015] Figure 2 This is a schematic diagram of the dental implant of this utility model after disassembly.

[0016] Among them, 10, implant body; 11, connecting segment; 121, first smooth segment; 122, first threaded segment; 131, second smooth segment; 132, second threaded segment; 133, conical segment; 20, implant abutment; 21, connecting part; 22, pergingival part; 23, retention part; 24, screw hole; 25, restorative shoulder; 30, retention screw; 41, sealing screw; 42, conical sealing block. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] Example 1:

[0019] An implant for use in the maxillary sinus region of the posterior maxilla includes: an implant body 10, an implant abutment 20, retention screws 30, and a sealing component (such as...). Figure 1 As shown), the implant body 10 has a cylindrical structure with a through channel in its center. The length of the implant body 10 is 10-13 mm (preferably 12 mm), and the diameter is 4.5-5.5 mm (set according to the specific implant socket size, preferably 4.5 mm). The through channel consists of a connecting section 11, a fastening section, and a sealing section from top to bottom, and these sections (i.e., the connecting section 11, the fastening section, and the sealing section) are interconnected (e.g., ...). Figure 2 As shown), the upper part of the fastening section is the first smooth section 121, and the lower part is the first threaded section 122. The sealing section, from top to bottom, consists of the second smooth section 131, the second threaded section 132, and the tapered section 133 (as shown). Figure 2(As shown); the diameter of the first smooth section 121, the outer diameter of the first threaded section 122, and the diameter of the second smooth section 131 are the same; the outer diameter of the second threaded section 132 is smaller than the outer diameter of the first threaded section 122 (as shown). Figure 2 (As shown).

[0020] The bottom of the planting base 20 matches the connecting area 11, and a through screw hole 24 is opened in the middle of the planting base 20 (the screw hole 24 is a stepped hole with a larger upper diameter and a smaller lower diameter, and its lower diameter is slightly larger than the diameter of the hole in the first smooth section 121, such as...). Figure 1 or Figure 2 As shown), the implant abutment 20 includes, from bottom to top, a connecting portion 21, a transgingival portion 22, and a retention portion 23, with the connecting portion 21 snapped into the connecting segment 11 (combined with...). Figure 1 and Figure 2 As shown); a restorative shoulder 25 is provided at the junction of the perforation portion 22 and the retention portion 23 (the perforation portion 22 extends from the upper end of the implant body 10 to the gingival level, the surface of the perforation portion 22 is a smooth and continuous concave shape, and its diameter gradually increases from the upper end of the implant body 10 to the gingival level, combined with... Figure 1 and Figure 2 As shown; at the same time, the maximum diameter of the upper end of the transgingival portion 22 and the lower end of the retention portion 23 form a restorative shoulder 25), the retention portion 23 is a frustum-shaped structure with a smaller upper part and a larger lower part (the surface of the retention portion 23 is provided with an anti-rotation bevel for connection with the implant crown).

[0021] The retaining screw 30 is set inside the screw hole 24, and its lower end passes through the screw hole 24 and is threadedly connected to the first threaded section 122 (e.g. Figure 1 As shown), the length of the retaining screw 30 is 7-10 mm (preferably 9 mm).

[0022] The sealing assembly is located within the sealing section and includes a sealing screw 41 and a conical sealing block 42. The conical sealing block 42 is fixedly connected to the bottom end of the sealing screw 41, and the longitudinal section of the conical sealing block 42 is a funnel-shaped structure that is larger at the top and smaller at the bottom (e.g., Figure 2 As shown, the conical sealing block 42 is correspondingly arranged with the conical section, the nut section of the sealing screw 41 is correspondingly arranged with the second smooth section 131, and the threaded section of the sealing screw 41 is correspondingly arranged with the second threaded section 132. The maximum diameter (i.e., the upper diameter) of the conical sealing block 42 is smaller than the inner diameter of the second threaded section 132 (to ensure that the conical sealing block 42 will not get stuck due to interference from the second threaded section 132 during the installation process from top to bottom); the height of the conical sealing block 42 is 2 to 3 mm (preferably 2.5 mm), and its taper angle is 4° to 6° (preferably 5°).

[0023] Working principle:

[0024] During the implantation process, the implant body 10 is first inserted into the implant socket (during this process, the sealing component is preferentially located within the sealing section via a threaded connection to achieve closure of the bottom of the implant body 10); then, the implant abutment 20 is connected to the implant body 10 via the retention screw 30 (e.g., Figure 1 (As shown in the diagram). Then, the implant crown is bonded to the surface of the retention portion 23 using adhesive bonding or other methods. The edge line of the implant crown terminates at the restorative shoulder 25, and its edge line is generally located 0.5–1.0 mm below the gingival surface. In the event of complications such as maxillary sinusitis, the implant abutment 20 and implant crown are disassembled by tightening the retention screw 30. Then, the sealing screw 41 is tightened to detach the sealing component from the through-channel of the implant body 10, thereby exposing the area of ​​the implant body 10 root near the maxillary sinus. The area is then treated with irrigation via the through-channel using an irrigation device.

[0025] Example 2:

[0026] As another preferred embodiment of this utility model, based on the above embodiment 1, the connecting part 21 is composed of a conical part and an anti-rotation part from top to bottom, and the corresponding connecting segment 11 is set as a conical segment ( Figure 2 The upper funnel-shaped structural area of ​​the connecting section 11 and the anti-rotation section ( Figure 2 The vertical area at the bottom of the connecting section 11); the height of the conical part is 2 to 3 mm, and the taper is 6° to 10°; the cross section of the anti-rotation part is a regular hexagonal structure and the height of the anti-rotation part is 1 mm, corresponding to the anti-rotation section having a regular hexagonal hole.

[0027] Example 3:

[0028] As another preferred embodiment of this utility model, based on the above embodiment 1, the diameter of the repair shoulder 25 of the implantation abutment 20 is 4.5-6.5mm and the width of the repair shoulder 25 is 0.3-0.5mm; and the implantation body 10, implantation abutment 20, fixing screw 30 and sealing assembly are all made of biocompatible metals, alloys or ceramic materials such as pure titanium, pure tantalum, titanium aluminum vanadium alloy, tantalum titanium alloy, zirconium oxide, etc.

[0029] Example 4:

[0030] As another preferred embodiment of this utility model, based on the above embodiment 1, the thread profiles of the threaded sections of the retaining screw 30 and the sealing screw 41 are both equilateral triangles with a thread angle of 60° and a thread height of 0.866 times the pitch (the pitch is set according to the actual situation, and the pitch of the retaining screw 30 is generally greater than the pitch of the sealing screw 41); the number of threads of both the retaining screw 30 and the sealing screw 41 is 5 to 6.

Claims

1. Implant for the maxillary posterior region maxillary sinus area, characterized in that: The device includes an implant body, an implant base, a retaining screw, and a sealing assembly. The implant body has a cylindrical structure with a through channel in the middle. The through channel consists of a connecting section, a fastening section, and a sealing section from top to bottom, and these sections are interconnected. The fastening section has a first smooth section on the upper side and a first threaded section on the lower side. The sealing section consists of a second smooth section, a second threaded section, and a tapered section from top to bottom. The bottom of the implant base matches the connecting area, and a through screw hole is opened in the middle of the implant base. The retaining screw is installed in the screw hole, and its lower end passes through the screw hole and is threadedly connected to the first threaded section. The sealing assembly is installed in the sealing section.

2. Implant for the posterior maxilla region of the upper jaw, according to claim 1, characterized in that: The implant abutment comprises a connecting part, a transgingival part, and a retention part from bottom to top, with the connecting part snapped into the connecting segment; a restorative shoulder is provided at the junction of the transgingival part and the retention part, and the retention part is a frustum-shaped structure that is smaller at the top and larger at the bottom.

3. Implant for the posterior maxilla region of the upper jaw, according to claim 1, characterized in that: The length of the implant body is 10-13 mm and the diameter is 4.5-5.5 mm.

4. A dental implant for the posterior maxilla maxillary sinus region according to claim 1, characterized in that: The length of the retaining screw is 7-10 mm.

5. A dental implant for the posterior maxilla maxillary sinus region according to claim 1, characterized in that: The diameter of the first smooth section, the outer diameter of the first threaded section, and the diameter of the second smooth section are the same; the outer diameter of the second threaded section is smaller than the outer diameter of the first threaded section.

6. A dental implant for the posterior maxilla maxillary sinus region according to claim 1, characterized in that: The sealing assembly includes a sealing screw and a conical sealing block. The conical sealing block is fixedly connected to the bottom end of the sealing screw, and the longitudinal section of the conical sealing block is a funnel-shaped structure with a larger top and a smaller bottom. The conical sealing block and the conical segment are correspondingly arranged. The nut segment of the sealing screw and the second smooth segment are correspondingly arranged, and the threaded segment of the sealing screw and the second threaded segment are correspondingly arranged.

7. Implant for the posterior maxilla region of the upper jaw in the area of the maxillary sinus according to claim 6, characterized in that The maximum diameter of the conical sealing block is smaller than the inner diameter of the second threaded section; the height of the conical sealing block is 2-3 mm, and its taper angle is 4°-6°.

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