Maxillary sinus lifting device

Abstract

The present invention relates to a maxillary sinus lifting device comprising: a surgical guide having a guide hole for guiding, to an accurate position, a drill for forming a perforation hole in the alveolar bone below the inner mucous membrane of the maxillary sinus; an elevation sleeve mounted in the guide hole of the surgical guide and having an inner spiral formed on the inner circumferential surface thereof; and an elevation guide drill having an outer spiral formed on the outer circumferential surface thereof and engaged with the inner spiral of the elevation sleeve to be rotated and raised in the perforation hole, thereby raising the inner mucous membrane of the maxillary sinus, wherein when the perforation hole is formed in the alveolar bone below the maxillary sinus by using the drill and then the mucous membrane in the maxillary sinus is raised with the elevation guide drill, the maxillary sinus mucous membrane is prevented from being damaged by a drill blade, and the maxillary sinus mucous membrane can also be safely lifted up with the elevation guide drill.

Description

maxillary sinus lift device

[0001] The present invention relates to a maxillary sinus lifting device, and more particularly, to a maxillary sinus lifting device that can safely lift the maxillary sinus without damaging the maxillary sinus mucosa (membrane).

[0002] Implants are a dental treatment that replaces missing teeth by implanting and fixing artificial teeth in their place, thereby restoring the function of the missing teeth. However, many patients have oral structures that make implants difficult to perform, making implant procedures difficult.

[0003] In particular, when residual bone in the molar region, where the maxillary sinus is located, is insufficient, implant placement becomes difficult. In such cases, a maxillary sinus lift procedure is performed to create space by elevating the lining of the sinus. This space is then filled with bone grafting, and implants are then placed within the space to overcome the remaining bone.

[0004] Maxillary sinus augmentation involves drilling a hole of a predetermined diameter in the alveolar bone below the maxillary sinus, lifting the mucosa inside the maxillary sinus (elevation), and filling the space between the elevated mucosa and the alveolar bone with bone grafting material to secure the thickness of the alveolar bone. However, there is always a risk that the maxillary sinus mucosa may be damaged by the drill bit during the process of drilling the hole in the alveolar bone to elevate the maxillary sinus mucosa.

[0005] The present invention has been devised to solve the problems of the above-mentioned prior art, and its purpose is to provide a maxillary sinus elevation device that can safely elevate the maxillary sinus mucosa with an elevation guide drill while preventing the maxillary sinus mucosa from being damaged by a drill bit when drilling a foundation hole in the alveolar bone.

[0006] In order to solve the above-described problem, the maxillary sinus lifting device according to the present invention comprises: a surgical guide having a guide hole formed therein for guiding a drill to an accurate position for forming a perforation hole in the alveolar bone beneath the internal mucosa of the maxillary sinus; an elevation sleeve mounted in the guide hole of the surgical guide and having an internal spiral formed on an inner surface; and an elevation guide drill having an external spiral formed on an outer surface thereof that engages the internal spiral of the elevation sleeve and thereby rotates upward within the perforation hole to lift the internal mucosa of the maxillary sinus.

[0007] And, the elevation guide drill is composed of a shank portion connected to a dental handpiece; a rotary guide connected to the end of the shank portion and having the external spiral formed on the outer surface; and a head connected to the end of the rotary guide and rotating upward within the perforation hole to elevate the internal mucosa of the maxillary sinus.

[0008] Here, the head is formed in a cylindrical shape, and the friction surface that contacts the internal mucosa of the maxillary sinus is a flat circular surface of a certain diameter.

[0009] And, the central portion of the head protrudes and comes into contact with the internal mucosa of the maxillary sinus.

[0010] In addition, the head is sunken in the central portion and the edge portion comes into contact with the internal mucosa of the maxillary sinus, and a number of hemispherical protrusions are formed protruding in the edge portion.

[0011] In addition, the head has a sunken central portion, the edge portion comes into contact with the internal mucosa of the maxillary sinus, and a number of wedges are continuously formed protruding from the edge portion.

[0012] The maxillary sinus lifting device of the present invention configured as described above has the advantage of being able to safely elevate the internal mucosa of the maxillary sinus by drilling a perforation hole to a certain depth when forming a perforation hole in the alveolar bone with a drill but not drilling all the way to the internal mucosa of the maxillary sinus, and lifting the remaining upper bone and internal mucosa of the maxillary sinus upward with an elevation guide drill that rotates upward along the internal spiral of the elevation sleeve.

[0013] Fig. 1 is a drawing showing an elevation sleeve of a maxillary sinus lifting device according to the present invention.

[0014] Fig. 2 is a drawing showing an elevation guide drill of a maxillary sinus lifting device according to the present invention.

[0015] Figure 3 is a drawing showing a maxillary sinus lifting device according to the present invention.

[0016] Figures 4 and 5 are drawings showing the appearance of elevating internal spots using the maxillary sinus elevation device according to the present invention.

[0017] Figure 6 is a drawing showing various aspects of the elevation guide drill of the maxillary sinus lifting device according to the present invention.

[0018] Hereinafter, an embodiment of a maxillary sinus lifting device according to the present invention will be described in detail with reference to the attached drawings.

[0019] Fig. 1 is a drawing showing an elevation sleeve of a maxillary sinus lifting device according to the present invention, Fig. 2 is a drawing showing an elevation guide drill of a maxillary sinus lifting device according to the present invention, and Fig. 3 is a drawing showing a maxillary sinus lifting device according to the present invention.

[0020] And, FIG. 4 and FIG. 5 are drawings showing an appearance of elevating internal spots using a maxillary sinus lifting device according to the present invention, and FIG. 6 is a drawing showing various appearances of an elevation guide drill of a maxillary sinus lifting device according to the present invention.

[0021]

[0022] The maxillary sinus lift device according to the present invention is composed of a surgical guide (10), an elevation sleeve (20) installed on the surgical guide (10), and an elevation guide drill (30) that rotates and rises on the elevation sleeve (20).

[0023]

[0024] Drilling for alveolar bone perforation is difficult for both beginners and experienced users to accurately estimate the depth and direction of perforation, so a surgical guide (10) is used as an auxiliary device to guide the perforation location and direction in which the perforation is to be performed.

[0025] This surgical guide (10) is manufactured from a synthetic resin material that is easy to mold, and a guide hole (10a) is formed to guide a drill (D) that forms the alveolar bone (B) below the internal mucosa (A) of the maxillary sinus to the correct position while fixed inside the patient's oral cavity.

[0026]

[0027] The above elevation sleeve (20) is mounted in the guide hole (10a) of the surgical guide (10), and an internal spiral (20a) is formed on the inner surface.

[0028] This elevation sleeve (20) supports the drill (D) when drilling to form a perforation hole (C) in the alveolar bone (B), and supports the elevation guide drill (30) when elevating the internal mucosa (A) of the maxillary sinus.

[0029] The above internal spiral (20a) is formed on the inner surface of the elevation sleeve (20), and acts as a curved root that allows the elevation guide drill (30) to rise while rotating, while at the same time acting as a stopper that prevents the elevation guide drill (30) from rising any further.

[0030] That is, the elevation guide drill (30) rotates along the internal spiral (20a) and rises, but stops at the point where the internal spiral (20a) ends and can no longer rise.

[0031]

[0032] The above elevation guide drill (30) has an external spiral (32c) formed on the outer surface that engages with the internal spiral (20a) of the elevation sleeve (20) and rotates upward within the perforation hole (C), thereby elevating the internal mucosa (A) of the maxillary sinus.

[0033] To explain in more detail, the elevation guide drill (30) is composed of a shank portion (31), a rotation guide (32) connected to the end of the shank portion (31), and a head (33) connected to the end of the rotation guide (32).

[0034] The above shank part (31) is connected to a dental handpiece and receives rotational force.

[0035] The above rotation guide (32) is composed of a bar (32a) integrally connected to the shank portion (31) and a connecting bar (32b) integrally connected to the end of the bar (32a).

[0036] The above bard (32a) is formed with a diameter larger than that of the shank portion (31) in the shape of a circular rod, and an external spiral (32c) is formed on the outer surface to rotate while interlocked with the internal spiral (20a) of the elevation sleeve (20).

[0037] The above connecting bar (32b) is formed in the shape of a circular rod with a diameter smaller than that of the bard (32a).

[0038] The above head (33) is a part that directly lifts the internal mucosa (A) of the maxillary sinus, and can be configured in various shapes.

[0039] To explain in detail, the head (33) may be formed in a cylindrical shape as illustrated in FIG. 2, but may be configured such that the friction surface that comes into contact with the internal mucosa (A) of the maxillary sinus is a flat circular surface of a certain diameter. Accordingly, when the head (33) is rotated with a dental handpiece while being inserted into the perforation hole (C) of the alveolar bone (B), the external spiral (32c) of the rotation guide (32) and the internal spiral (20a) of the elevation sleeve (20) are engaged and rotated, causing the head (33) to rise, thereby elevating the internal mucosa (A) of the maxillary sinus.

[0040] In another form, as shown in Fig. 6, the central portion of the head (33) may be protruded to form a small cylinder (33a), and this protruding central portion, that is, the small cylinder (33a), may be made to contact the internal mucosa (A) of the maxillary sinus. In other words, the head (33) may be configured in such a way that the central portion that contacts the internal mucosa (A) of the maxillary sinus protrudes, thereby forming a step between the edge and the central portion.

[0041] In another form, as shown in Fig. 6, the head (33) may have a central portion sunken so that the edge portion comes into contact with the internal mucosa (A) of the maxillary sinus, and a number of hemispherical protrusions (33b) may protrude from the edge portion.

[0042] In addition, as shown in Fig. 6, the head (33) may be formed so that the central portion is sunken so that the edge portion comes into contact with the internal mucosa (A) of the maxillary sinus, and a number of wedges (33c) are continuously protruded at the edge portion.

[0043]

[0044] The process of elevating the internal mucosa of the maxillary sinus using the maxillary sinus elevation device according to the present invention configured as described above is briefly described below with reference to FIGS. 4 and 5.

[0045] First, a surgical guide (10) equipped with an elevation sleeve (20) is fixed inside the patient's mouth, and then the alveolar bone (B) is perforated using a drill (D).

[0046] At this time, drill (D) only up to the cancellous bone (B1) of the alveolar bone (B) and do not drill the inner cortical bone (B2). Since cancellous bone (B1) is composed of relatively soft tissue and cortical bone (B2) is harder than cancellous bone (B1), you can detect it when the drill (D) touches the alveolar bone (B).

[0047] When the perforation hole (C) is formed, the elevation guide drill (30) is placed into the elevation sleeve (20) and the handpiece is operated so that the elevation guide drill (30) rotates and rises.

[0048] When the elevation guide drill (30) rises, the inner non-perforated cortical bone (B2) is lifted upwards, and the inner mucosa (A) of the maxillary sinus is raised upwards to create space.

[0049] A space is formed within the alveolar bone (B), and bone grafting material is filled into that space to secure the thickness of the alveolar bone, after which the implant procedure is performed.

Claims

1. A surgical guide (10) having a guide hole (10a) formed therein for guiding a drill (D) that forms a perforation hole (C) in the alveolar bone (B) below the internal mucosa (A) of the maxillary sinus to an accurate position; An elevation sleeve (20) mounted in the guide hole (10a) of the above surgical guide (10) and having an internal spiral (20a) formed on the inner surface; A maxillary sinus lifting device characterized by comprising an elevation guide drill (30) in which an external spiral (32c) interlocked with an internal spiral (20a) of the elevation sleeve (20) is formed on the outer surface thereof and rotates upward within the perforation hole (C) to thereby lift the internal mucosa (A) of the maxillary sinus.

2. In claim 1, The above elevation guide drill (30) has a shank part (31) that connects to a dental handpiece; A rotary guide (32) connected to the end of the above-mentioned sink portion (31) and having the above-mentioned external spiral (32c) formed on the outer surface; A maxillary sinus lifting device characterized by comprising a head (33) connected to the end of the above-mentioned rotation guide (32) and rotating upward within the above-mentioned perforation hole (C) to lift the internal mucosa (A) of the maxillary sinus.

3. In claim 2, A maxillary sinus lifting device characterized in that the head (33) is formed in a cylindrical shape, and the friction surface that contacts the internal mucosa (A) of the maxillary sinus is a flat circular surface of a certain diameter.

4. In claim 2, The above head (33) is a maxillary sinus lifting device characterized in that the central portion protrudes and comes into contact with the internal mucosa (A) of the maxillary sinus.

5. In claim 2, The head (33) is a maxillary sinus lift device characterized in that the central portion is sunken, the edge portion is in contact with the internal mucosa (A) of the maxillary sinus, and a number of hemispherical protrusions (33b) are formed protruding on the edge portion.

6. In claim 2, The head (33) is a maxillary sinus lift device characterized in that the central portion is sunken and the edge portion is in contact with the internal mucosa (A) of the maxillary sinus, and a number of wedges (33c) are continuously formed protruding from the edge portion.

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