Drill point for assisting maxillary sinus external lifting windowing

Abstract

The utility model discloses a drill point for assisting maxillary sinus external lifting windowing, which comprises a mounting plate, a rod body is mounted at the bottom end of the mounting plate, and the drill point structure comprises a first drill point mounted at the bottom end of a connecting rod. The first drill point is installed at the bottom end of the connecting rod, the first drill point is mainly a boning drill, the head of the first drill point is smooth and blunt, and the first drill point is similar to a first detacher in a maxillary sinus external lifting tool, so that on one hand, maxillary sinus mucosa can be protected during the working period of the bone drill, and on the other hand, the mucosa can be slightly peeled off when the drill bit does not work; the working end is a blade end in the groove and can be carborundum or tooth-shaped, a fenestration hole of the maxillary sinus can be further expanded, some sharp edges which may puncture the mucosa of the maxillary sinus are removed, the uppermost part is a protection end, and the drill bit can be guaranteed to be clamped on a bone surface in the working process of the drill bit and not to fall suddenly to puncture the mucosa of the maxillary sinus or be rolled into a drill point. Therefore, the purpose that the drill point for assisting in maxillary sinus external lifting windowing is convenient to reduce the fracture risk is achieved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a drill bit for assisting in the external lifting and fenestration of the maxillary sinus. Background Technology

[0002] External maxillary sinus lift, also known as open maxillary sinus lift, is commonly used in dental implant surgery in oral surgery. It involves creating a window in the lateral wall of the maxillary sinus, directly visualizing and peeling away the maxillary sinus floor mucosa, then pushing it upwards and inwards to increase alveolar bone height. This procedure is suitable for patients with severe bone deficiency. During external maxillary sinus lift, bone removal and window opening are required on the anterior wall of the maxillary sinus. Commonly used tools have drawbacks in window opening: incomplete opening is possible, especially for novice surgeons, and further window opening may lead to mucosal rupture. The opening height is often difficult to control; opening too high increases the difficulty of mucosal peeling and the risk of rupture, while opening too low reduces the volume of bone graft material, affecting bone regeneration. To address this, a drill was designed to assist in enlarging the window opening after initial opening. This enlarges the maxillary sinus opening while protecting the maxillary sinus mucosa, and further refines the opening height to protect the maxillary sinus mucosa and promote bone regeneration.

[0003] Current drills for assisted maxillary sinus lift fenestration can basically meet people's needs, but some problems still exist, as detailed below:

[0004] 1. The drill bit used for assisted maxillary sinus external lift fenestration has difficulty reducing the risk of rupture, and there is a possibility of incomplete fenestration. Especially for novice doctors, further fenestration may lead to mucosal rupture. Often, the height of the fenestration is difficult to control. If the fenestration is too high, it will increase the difficulty of mucosal dissection and the risk of rupture. If the fenestration is too low, it will reduce the volume of bone powder retention and affect bone regeneration. Summary of the Invention

[0005] The purpose of this invention is to provide a drill bit for assisting in external maxillary sinus lift and fenestration, in order to solve the defect of existing drill bits for assisting in external maxillary sinus lift and fenestration that are difficult to reduce the risk of rupture.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a drill bit for assisting in the external lifting and fenestration of the maxillary sinus, including a mounting plate;

[0007] A rod is mounted on the bottom end of the mounting plate, and a connecting rod is mounted on the bottom end of the rod.

[0008] A baffle is installed at the bottom end of the connecting rod, an inner rod is installed inside the connecting rod, and a reinforcing structure is installed inside the connecting rod.

[0009] The bottom end of the baffle is equipped with a working end, and the bottom end of the working end is equipped with a drill bit structure, the drill bit structure including a first drill bit installed at the bottom end of the connecting rod.

[0010] When in use, the main bone-removing drill bit has a smooth, rounded head, similar to the first dissector in a maxillary sinus lift tool. This protects the maxillary sinus mucosa during the bone-removing process and allows for minor dissection of the mucosa when the drill is not in use. The working end is a cutting edge inside a groove, which can be made of diamond or toothed material. This further enlarges the opening of the maxillary sinus and removes some sharp edges that may puncture the maxillary sinus mucosa. The topmost end is a protective end, which ensures that the drill bit is held in place on the bone surface during operation and does not suddenly slip and puncture the maxillary sinus mucosa or get caught in the drill bit.

[0011] Furthermore, the drill bit structure includes a second drill bit installed at the bottom end of the connecting rod, a third drill bit installed at the bottom end of the connecting rod, and a fourth drill bit installed at the bottom end of the connecting rod. The model of the drill bit can be replaced.

[0012] Furthermore, the drill bit structure includes a fifth drill bit mounted at the bottom end of the connecting rod, and a sixth drill bit mounted at the bottom end of the connecting rod.

[0013] Furthermore, the reinforcing structure includes a reinforcing layer disposed inside the connecting rod, a first reinforcing rib installed inside the reinforcing layer, and a second reinforcing rib installed inside the reinforcing layer. The first and second reinforcing ribs can enhance the structural strength of the connecting rod.

[0014] Furthermore, the second reinforcing rib is distributed in a ring shape, and the second reinforcing rib is arranged at equal intervals inside the reinforcing layer. The material of the reinforcing rib can be made of steel.

[0015] Furthermore, the first reinforcing ribs are arranged at equal intervals inside the reinforcing layer, and the first reinforcing ribs are distributed in a ring shape inside the reinforcing layer.

[0016] The advantages of the drill bit for assisting in external maxillary sinus lift and fenestration provided by this utility model are: during use, the drill bit can be kept on the bone surface and will not suddenly fall out and puncture the maxillary sinus mucosa or get caught in the drill bit. The drill bit also needs to be replaced for use under different circumstances.

[0017] The tool is equipped with a first drill bit at the bottom of the connecting rod. The first, second, third, fourth, fifth, and sixth drill bits are of different models, with heads available in four specifications: 1mm, 3mm, 5mm, and 8mm. These are used for different window opening heights to ensure the remaining bone height of the maxillary sinus floor. The main bone-removing drill bit has a smooth, rounded head, similar to the first dissector in the maxillary sinus external lifting tool. This protects the maxillary sinus mucosa during the bone drill's operation and allows for minor mucosal dissection when the drill is not in use. The working end is a cutting edge inside a groove, which can be made of diamond or toothed. This further enlarges the maxillary sinus window opening and removes sharp edges that might puncture the maxillary sinus mucosa. The top is a protective end that ensures the drill bit stays on the bone surface during operation, preventing it from suddenly slipping and puncturing the maxillary sinus mucosa or getting caught in the drill bit. This helps reduce the risk of rupture when using the drill bit for maxillary sinus external lifting window opening. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 2 This is a front view cross-sectional structural diagram of the present invention;

[0020] Figure 3 This is a top view cross-sectional diagram of the reinforcing structure of this utility model;

[0021] Figure 4 This is a front view cross-sectional structural diagram of the drill bit structure of this utility model;

[0022] Figure 5 This is a front view cross-sectional structural diagram of the drill bit structure of this utility model.

[0023] The reference numerals in the figure are as follows: 1. Rod body; 2. Working end; 3. Connecting rod; 4. Baffle; 5. Drill bit structure; 501. First drill bit; 502. Second drill bit; 503. Third drill bit; 504. Fourth drill bit; 505. Fifth drill bit; 506. Sixth drill bit; 6. Mounting plate; 7. Inner rod; 8. Reinforcing structure; 801. First reinforcing rib; 802. Second reinforcing rib; 803. Reinforcing layer. Detailed Implementation

[0024] 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.

[0025] Please see Figures 1-5 One embodiment of this utility model is a drill bit for assisting in the external lifting and fenestration of the maxillary sinus, including a mounting plate 6.

[0026] A rod 1 is installed at the bottom of the mounting plate 6, and a connecting rod 3 is installed at the bottom of the rod 1.

[0027] A baffle 4 is installed at the bottom of the connecting rod 3. An inner rod 7 is installed inside the connecting rod 3. A reinforcing structure 8 is installed inside the connecting rod 3. The reinforcing structure 8 includes a reinforcing layer 803 disposed inside the connecting rod 3. A first reinforcing rib 801 is installed inside the reinforcing layer 803. The first reinforcing rib 801 is arranged at equal intervals inside the reinforcing layer 803. The first reinforcing rib 801 is distributed in a ring inside the reinforcing layer 803.

[0028] The interior of the reinforcing layer 803 is equipped with a second reinforcing rib 802, which is distributed in a ring and is arranged at equal intervals inside the reinforcing layer 803.

[0029] See attached document Figure 3 As shown, the first reinforcing rib 801 and the second reinforcing rib 802 inside the reinforcing layer 803 intersect each other. The first reinforcing rib 801 and the second reinforcing rib 802 are distributed in a ring inside the connecting rod 3. The reinforcing ribs can be made of steel. The first reinforcing rib 801 and the second reinforcing rib 802 can strengthen the structural strength of the connecting rod 3 and prevent the connecting rod 3 from being damaged during use.

[0030] A working end 2 is installed at the bottom of the baffle 4, and a drill bit structure 5 is installed at the bottom of the working end 2. The drill bit structure 5 includes a first drill bit 501 installed at the bottom of the connecting rod 3, a fifth drill bit 505 installed at the bottom of the connecting rod 3, and a sixth drill bit 506 installed at the bottom of the connecting rod 3.

[0031] The drill bit structure 5 includes a second drill bit 502 installed at the bottom end of the connecting rod 3, a third drill bit 503 installed at the bottom end of the connecting rod 3, and a fourth drill bit 504 installed at the bottom end of the connecting rod 3.

[0032] See attached document Figure 1-2 and attached Figure 4-5As shown, the first drill bit 501, the second drill bit 502, the third drill bit 503, the fourth drill bit 504, the fifth drill bit 505, and the sixth drill bit 506 are of different models, and can be divided into four specifications with heads of 1mm, 3mm, 5mm, and 8mm. The first drill bit 501 and the sixth drill bit 506 are coated with diamond powder, the second drill bit 502 has a smooth surface, and the working end 2 of the third drill bit 503, the fourth drill bit 504, and the fifth drill bit 505 is coated with diamond powder. They are used under different window opening heights to ensure the remaining bone height of the maxillary sinus floor. The drill bit is the main bone removal drill, and the head is smooth and blunt, similar to the first dissector in the maxillary sinus external lifting tool. On the one hand, it can protect the maxillary sinus mucosa during bone drilling, and on the other hand, it can be used for small-scale bone removal when the drill bit is not working. The mucosa is peeled off. The working end 2 is a cutting edge inside the groove, which can be diamond or toothed. It can further enlarge the opening of the maxillary sinus and remove some sharp edges that may puncture the maxillary sinus mucosa. The uppermost part is the protective end, which can ensure that the drill bit is stuck on the bone surface during the drill bit operation and will not suddenly fall and puncture the maxillary sinus mucosa or get caught in the drill bit. The order of use of drill bits when using the bone plate removal method is: first drill bit 501, second drill bit 502, third drill bit 503, fourth drill bit 504, and fifth drill bit 505. The diameter of the bur is slightly thicker, which can grind away the bone of the anterior wall, but the grinding is uneven and the opening effect is not good. The opening is further enlarged and the drill bit is further completed. The order of use of drill bits when using the capping method is: sixth drill bit 506, second drill bit 502, and third drill bit 503.

[0033] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A drill bit for assisting in external maxillary sinus lift fenestration, comprising a mounting plate (6); Its features are: A rod (1) is installed at the bottom end of the mounting plate (6), and a connecting rod (3) is installed at the bottom end of the rod (1); A baffle (4) is installed at the bottom end of the connecting rod (3), an inner rod (7) is installed inside the connecting rod (3), and a reinforcing structure (8) is installed inside the connecting rod (3); The bottom end of the baffle (4) is equipped with a working end (2), and the bottom end of the working end (2) is equipped with a drill bit structure (5). The drill bit structure (5) includes a first drill bit (501) installed at the bottom end of the connecting rod (3).

2. The drill bit for assisting in maxillary sinus external elevation fenestration according to claim 1, characterized in that: The drill bit structure (5) includes a second drill bit (502) installed at the bottom end of the connecting rod (3), a third drill bit (503) installed at the bottom end of the connecting rod (3), and a fourth drill bit (504) installed at the bottom end of the connecting rod (3).

3. The drill bit for assisting in maxillary sinus external elevation fenestration according to claim 1, characterized in that: The drill bit structure (5) includes a fifth drill bit (505) installed at the bottom end of the connecting rod (3), and a sixth drill bit (506) installed at the bottom end of the connecting rod (3).

4. The drill bit for assisting in maxillary sinus external elevation fenestration according to claim 1, characterized in that: The reinforcing structure (8) includes a reinforcing layer (803) disposed inside the connecting rod (3), a first reinforcing rib (801) installed inside the reinforcing layer (803), and a second reinforcing rib (802) installed inside the reinforcing layer (803).

5. The drill bit for assisting in maxillary sinus external elevation fenestration according to claim 4, characterized in that: The second reinforcing rib (802) is distributed in a ring, and the second reinforcing rib (802) is arranged at equal intervals inside the reinforcing layer (803).

6. The drill bit for assisting in maxillary sinus external elevation fenestration according to claim 4, characterized in that: The first reinforcing rib (801) is arranged at equal intervals inside the reinforcing layer (803), and the first reinforcing rib (801) is distributed in a ring inside the reinforcing layer (803).

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