A kind of transcrestal maxillary sinus floor lifting auxiliary bone grafting device and its working method

Abstract

The application relates to a transcrestal maxillary sinus bottom lifting auxiliary bone grafting device and a working method thereof, and belongs to the technical field of medical devices. The device comprises a flaring device and a fixer. The flaring device comprises a hollow cylinder, a conical block and a cylindrical filling block which are sequentially arranged from top to bottom, the flaring device is funnel-shaped as a whole, and the hollow cylinder is symmetrically provided with fixing holes. The fixer comprises a connecting column, a nut, a sliding block, a positioning protrusion, two first connecting rods and two second connecting rods. The connecting column is provided with a thread at one end, the thread is provided with the nut, the other end of the connecting column is hingedly connected with the two second connecting rods, the sliding block is slidably sleeved on the connecting column, the two first connecting rods are respectively hingedly connected to the two second connecting rods, and the two second connecting rods are respectively provided with the positioning protrusions at the ends. The application can fully expose the bone defect position, ensure the filling position accuracy of the bone powder filling device, conveniently observe the bone powder filling amount, and improve the bone powder filling effect.

Description

Technical Field

[0001] This invention relates to a bone grafting device for lifting the maxillary sinus floor through the alveolar ridge and its working method, belonging to the field of medical device technology. Background Technology

[0002] Dental implant technology is one of the effective means of repairing tooth defects and missing teeth. Especially in clinical practice, some patients have insufficient bone height in the maxillary posterior tooth area, which requires the maxillary sinus floor mucosa to be lifted. This involves filling the area under the lifted maxillary sinus mucosa with autologous bone or artificial synthetic bone (block or powder) to improve or restore the available bone height in the implant area to a certain extent, thereby improving the long-term success rate and aesthetic effect of dental implants.

[0003] The most common clinical procedure is to aspirate blood from the implant area, drip it into a bone bowl to mix with bone powder, then use a bone powder filling device to deliver it to the bone defect site, and finally use a compactor to compact it. However, the bone grafting process is easily affected by adjacent teeth and surrounding saliva, which can lead to contamination of the bone graft material. In addition, the bone graft filling hole is generally about 3-5mm, and the operating space is narrow. Directly filling the bone powder with a bone powder filling device can easily cause bone powder to overflow, deviate from the filling position, and make it difficult to control the filling amount.

[0004] For example, Chinese patent document CN112998883B discloses a bone powder filler for dental implants used in oral restoration. The bone powder filler includes: a filling tube comprising a tube body, a connecting tube, a powder inlet tube, and finger rings; the larger side of the connecting tube is fixedly connected to one end of the tube body, and the smaller side of the powder inlet tube is connected to the side of the tube body furthest from the connecting tube; two finger rings are symmetrically fixedly connected to both sides of the tube body near the powder inlet tube; a powder pushing device comprising a cap, a pushing rod, a piston, a pressure ring, and finger blocks; the cap is threadedly connected to the end of the powder inlet tube furthest from the tube body; the pushing rod is slidably inserted into a sliding hole; the piston is fixedly connected to one end of the pushing rod; and the pressure ring is connected to the end of the pushing rod furthest from the piston; and a detachable filling device comprising a detachable tube, a threaded connecting ring, and a filling head. This bone powder filler directly delivers bone powder to the bone defect site, which easily leads to bone powder overflow, filling position deviation, and difficulty in controlling the filling amount. Therefore, this invention is proposed. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a bone grafting device for lifting the maxillary sinus floor through the alveolar ridge, which fully exposes the bone defect location, establishes an isolation barrier to avoid contamination of the surgical area, ensures accurate placement of the bone powder filler, and facilitates observation of the bone powder filling amount, thereby improving the bone powder filling effect.

[0006] The present invention also provides a method for operating the above-mentioned bone grafting device for lifting the maxillary sinus floor through the alveolar ridge.

[0007] The technical solution of the present invention is as follows:

[0008] A bone grafting device for lifting the maxillary sinus floor through the alveolar ridge includes a diaphragm and a fixator. The diaphragm includes a hollow cylinder, a conical block, and a cylindrical filling block arranged sequentially from top to bottom. Both the conical block and the cylindrical filling block are hollow. The diaphragm is funnel-shaped as a whole, and the hollow cylinder has symmetrically arranged fixing holes.

[0009] The fastener includes a connecting column, a nut, a slider, a positioning protrusion, two first connecting rods, and two second connecting rods. One end of the connecting column is threaded and a nut is installed on the thread. The other end of the connecting column is hinged to two second connecting rods. A slider is slidably mounted on the connecting column. The first connecting rods are hinged to both sides of the slider. The two first connecting rods are movably connected to the two second connecting rods. The ends of the two second connecting rods are respectively provided with positioning protrusions.

[0010] Preferably, the end of the second connecting rod is provided with a positioning protrusion via an arc-shaped rod, and the two positioning protrusions face opposite directions. By adding the arc-shaped rod, it is convenient to insert the positioning protrusion into the fixing hole.

[0011] Preferably, the length of the positioning protrusion is greater than the wall thickness of the hollow cylinder, ensuring that the positioning protrusion can protrude from the hollow cylinder and play a fixed clamping role.

[0012] Preferably, a spring is provided between the two first connecting rods. After the nut is loosened, the first connecting rod automatically retracts under the action of the spring force, releasing the positioning protrusion.

[0013] Preferably, a positioning block is provided at one end of the connecting column. The positioning block is stepped shaft-shaped. The positioning block has two functions: first, it makes it easier for the operator to hold the connecting column and improves the operating comfort; second, it extends and seals the connecting column to prevent the nut from coming off the connecting column due to misoperation.

[0014] More preferably, the positioning block is a stepped shaft composed of two cylinders with different diameters. The diameter of the smaller diameter cylinder is the same as the diameter of the connecting column, and the positioning block is threadedly connected to the connecting column by a stud.

[0015] Preferably, a positioning nut is provided on the connecting post on one side of the nut to further fix the position of the nut and prevent the nut from sliding during operation.

[0016] Preferably, the outer diameter of the top of the cone-shaped block is 5mm and the outer diameter of the bottom is 3mm, so that the cone-shaped block can meet the needs of bone meal filling ports of different sizes in the planting area.

[0017] The working method of the above-mentioned maxillary sinus floor lifting and bone grafting device for perforating the alveolar ridge is as follows:

[0018] (1) Screw the nut into the connecting column, then install the positioning block to complete the device assembly, then put the flaring tool into the designated position and adjust the position of the fixing hole;

[0019] (2) Insert the end of the second connecting rod into the hollow cylinder, align the positioning protrusion with the fixing hole, and then tighten the nut inward. The second connecting rod expands outward, and the positioning protrusion protrudes through the fixing hole into the hollow cylinder to fix the flaring device.

[0020] (3) Then use the bone meal filling device to work, and observe the working situation through the flaring device. After the work is completed, unscrew the nut outward. The first connecting rod retracts under the action of the spring, which drives the second connecting rod to retract. The positioning protrusion exits the fixing hole. Then take out the flaring device and the work is over.

[0021] The beneficial effects of this invention are as follows:

[0022] 1. This invention provides a bone grafting device for lifting the maxillary sinus floor through the alveolar ridge, which fully exposes the bone defect location, ensures accurate filling position of the bone powder filler, and facilitates observation of the bone powder filling amount, thereby improving the bone powder filling effect.

[0023] 2. A spring is provided between the two first connecting rods of the present invention. After the nut is loosened, the first connecting rod automatically retracts under the action of the spring force, and the positioning protrusion is released.

[0024] 3. The connecting column of the present invention is provided with a positioning block at one end. The positioning block has two functions: first, it makes it easier for the operator to hold the connecting column and improves the comfort of operation; second, it extends and seals the connecting column to prevent the nut from coming off the connecting column due to misoperation. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the flaring device structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the fixture structure of the present invention;

[0027] Figure 3 This is a schematic diagram of the positioning block structure of the present invention;

[0028] The components are: 1. Hollow cylinder; 2. Conical block; 3. Cylindrical filler block; 4. Connecting column; 5. Nut; 6. Slider; 7. First connecting rod; 8. Second connecting rod; 9. Positioning protrusion; 10. Arc rod; 11. Spring; 12. Fixing hole; 13. Positioning block; 14. Stud. Detailed Implementation

[0029] The present invention will be further described below with reference to the embodiments and accompanying drawings, but is not limited thereto.

[0030] Example 1:

[0031] like Figure 1-3 As shown, this embodiment provides an auxiliary bone grafting device for lifting the maxillary sinus floor through the alveolar ridge, including a mouth expander and a fixator. The mouth expander includes a hollow cylinder 1, a conical block 2 and a cylindrical filling block 3 arranged sequentially from top to bottom. Both the conical block 2 and the cylindrical filling block 3 are hollow parts. The mouth expander is funnel-shaped as a whole. Fixing holes 12 are symmetrically arranged on the hollow cylinder 1.

[0032] The fastener includes a connecting post 4, a nut 5, a slider 6, a positioning protrusion 9, two first connecting rods 7 and two second connecting rods 8. One end of the connecting post 4 is threaded and a nut 5 is installed on the thread. The other end of the connecting post 4 is hinged to two second connecting rods 8. The slider 6 is slidably mounted on the connecting post 4. The first connecting rods 7 are hinged to both sides of the slider 6. The two first connecting rods 7 are movably connected to the two second connecting rods 8. The ends of the two second connecting rods 8 are respectively provided with positioning protrusions 9.

[0033] The length of the positioning protrusion 9 is greater than the wall thickness of the hollow cylinder 1, ensuring that the positioning protrusion can protrude from the hollow cylinder and play a fixed clamping role.

[0034] A spring 11 is installed between the two first connecting rods 7. After the nut is loosened, the first connecting rod automatically retracts under the action of the spring force, releasing the positioning protrusion.

[0035] A positioning block 13 is provided at one end of the connecting column 4. The positioning block 13 is stepped shaft-shaped. The positioning block 13 has two functions: first, it makes it easier for the operator to hold the connecting column and improves the operating comfort; second, it extends and seals the connecting column to prevent the nut from coming off the connecting column due to misoperation.

[0036] The outer diameter of the top of the cone-shaped block 2 is 5mm and the outer diameter of the bottom is 3mm, so that the cone-shaped block can meet the needs of bone meal filling ports of different sizes in the planting area.

[0037] The working method of the above-mentioned maxillary sinus floor lifting and bone grafting device for perforating the alveolar ridge is as follows:

[0038] (1) Screw the nut 5 into the connecting column 4, then install the positioning block 13 to complete the device assembly, then put the flaring tool into the designated position and adjust the position of the fixing hole 12.

[0039] (2) Insert the end of the second connecting rod 8 into the hollow cylinder 1, align the positioning protrusion 9 with the fixing hole 12, and then tighten the nut 5 inward. The second connecting rod 8 expands outward, and the positioning protrusion 9 protrudes out of the hollow cylinder through the fixing hole 12 to fix the flaring device.

[0040] (3) Then use the bone meal filling device to work, and observe the work situation through the flaring device. After the work is completed, unscrew the nut 5 outward. The first connecting rod 7 retracts under the action of the spring 11, which drives the second connecting rod 8 to retract. The positioning protrusion 9 exits the fixing hole 12. Then take out the flaring device and the work is over.

[0041] Example 2:

[0042] A bone grafting device for lifting the maxillary sinus floor through the alveolar ridge has the structure described in Example 1, except that the end of the second connecting rod 8 is provided with a positioning protrusion through the arc-shaped rod 10. The two positioning protrusions face opposite directions, and the addition of the arc-shaped rod makes it convenient to insert the positioning protrusions into the fixing holes.

[0043] Example 3:

[0044] A bone grafting device for lifting the maxillary sinus floor through the alveolar ridge has the structure described in Example 1, except that the positioning block 13 is a stepped shaft composed of two cylinders with different diameters. The diameter of the smaller cylinder is the same as the diameter of the connecting post 4. The positioning block 13 is threadedly connected to the connecting post 4 by a stud 14.

[0045] Example 4:

[0046] A bone grafting device for lifting the maxillary sinus floor through the alveolar ridge is structured as described in Example 1, except that a positioning nut is provided on the connecting post 4 on one side of the nut 5. The positioning nut further fixes the position of the nut and prevents the nut 5 from sliding during operation.

[0047] In the description of this application, it should be understood that the terms "upper", "lower", "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 application and simplifying the description, 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 application.

[0048] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A transalveolar ridge crest maxillary sinus floor lifting auxiliary bone graft device, characterized in that, It includes a flaring device and a fixing device. The flaring device includes a hollow cylinder, a conical block and a cylindrical filling block arranged from top to bottom. Both the conical block and the cylindrical filling block are hollow parts. The flaring device is funnel-shaped as a whole, and fixing holes are symmetrically arranged on the hollow cylinder. The fastener includes a connecting column, a nut, a slider, a positioning protrusion, two first connecting rods and two second connecting rods. One end of the connecting column is threaded and a nut is installed on the thread. The other end of the connecting column is hinged to two second connecting rods. A slider is slidably mounted on the connecting column. The first connecting rods are hinged to both sides of the slider. The two first connecting rods are movably connected to the two second connecting rods. The ends of the two second connecting rods are respectively provided with positioning protrusions. The end of the second connecting rod is provided with a positioning protrusion through an arc-shaped rod. The two positioning protrusions face opposite directions, and the length of the positioning protrusion is greater than the wall thickness of the hollow cylinder. A spring is installed between the two first links; A positioning block is provided at one end of the connecting column, and the positioning block is in the shape of a stepped shaft.

2. The maxillary sinus floor lifting and bone grafting device for perforating the alveolar ridge as described in claim 1, characterized in that, The positioning block is a stepped shaft composed of two cylinders with different diameters. The diameter of the smaller cylinder is the same as the diameter of the connecting column. The positioning block is threadedly connected to the connecting column by a stud.

3. The maxillary sinus floor lifting and bone grafting device for perforating the alveolar ridge as described in claim 1, characterized in that, A positioning nut is provided on the connecting post on one side of the nut.

4. The maxillary sinus floor lifting and bone grafting device for perforating the alveolar ridge as described in claim 1, characterized in that, The outer diameter of the top of the cone-shaped block is 5mm, and the outer diameter of the bottom is 3mm.

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