Technical Field

The invention relates to an osteotome apparatus used in the surgical sinus floor lifting in order to increase the bone amount in the absence of sufficient bone in the area to be implanted.

Background

When implantation is required in the upper jaw, if there is not enough bone, a procedure called sinus lifting or sinus elevation is applied, and the sinus floor is surgically lifted and a bone powder/grafting process is performed. During this process, an apparatus called osteotome is used. The sinus lifting process can be performed with two methods as lateral antrostomy and crestal approach. This study relates to an apparatus that can be used in the crestal approach technique.

There is a risk of damaging the Schneider membrane (sinus membrane) in maxillary sinus lifting operations.

The Korean patent document numbered KR20200118553A, which is in the state of the art, discloses a milling tool comprising an implant-guided stopper that has the stop height function and controls the depth. It includes the height-stopping member. A predetermined depth can be adjusted to the guide portion.

The International patent document numbered WO2008125449A1, which is in the state of the art, discloses a surgical bone drilling tool. There is a handle to transmit the pressure to the milling head. The bone-cutting process includes a sharply elevated milling ridge that serves as a blade. It includes a body called the milling element that enters inside the bone.

The International patent document numbered WO2009136775A2, which is in the state of the art relates to a pressure sensitive drill that can prevent damage to the mucosa by drill when the implant is placed on the maxillary sinus elevation. It includes the elevating blade portion, the cutting blade portion, and the base portion.

The International patent document numbered WO2017035872A1, which is in the state of the art discloses a memory elastic wire sheath for peeling the mucous membrane of the maxillary sinus, adapted for implant surgeries and/or bone grafting in areas close to the maxillary sinus floor.

During the sinus lifting process, firstly, an osteotome apparatus is placed in the bone cavity opened with a drill, and then the sinus lifting process is performed using a hammer. The osteotome apparatuses in the state of the art cannot perform the sinus lifting process to provide the bone volume required for the attachment of the implant in jaw bone deficiencies. If enough bone is not formed, it will have disadvantages in the durability and lifetime of the implant. In addition, while performing this process, there are risks such as perforation of the sinus membrane in case of excessive insertion of the osteotome apparatus into the cavity within the bone.

There is no osteotome apparatus in the documents in the state of the art that provides sufficient bone formation and prevents damage to the sinus membrane. Therefore, there was a need to develop the crestal approach maxillary sinus lifting osteotome apparatus of the invention.

The Objects of the Invention

The object of this invention is to realize the crestal approach maxillary sinus lifting osteotome apparatus to perform the lifting process without damaging the sinus membrane in maxillary sinus lifting processes.

Another object of this invention is to realize the crestal approach maxillary sinus lifting osteotome apparatus to perform a wider drilling process on the surface by opening outwards while the lifting blade advances within the jaw bone with hammer impacts and to obtain more bone volume. Another object of this invention is to realize the crestal approach maxillary sinus lifting osteotome apparatus, which includes a ring to prevent the lifting blade from advancing beyond a certain level.

Another object of this invention is to realize the crestal approach maxillary sinus lifting osteotome apparatus, which includes level settings to prevent the lifting blade from advancing beyond a certain level.

Another object of this invention is to realize the crestal approach maxillary sinus lifting osteotome apparatus to perform the process without graft and allow natural bone formation.

Another object of this invention is to realize the crestal approach maxillary sinus lifting osteotome apparatus to eliminate the damage of the graft to the patient by performing the process without graft.

Another object of this invention is to realize the crestal approach maxillary sinus lifting osteotome apparatus to perform the process with less cost by performing the process without graft.

Detailed Description of the Invention

The crestal approach maxillary sinus lifting osteotome apparatus realized to achieve the objects of this invention is shown in the attached figures.

In which;

Figure 1: The schematic view of the crestal approach maxillary sinus lifting osteotome apparatus.

Figure 2: The exploded view of the crestal approach maxillary sinus lifting osteotome apparatus.

Figure 3: The view showing that the lifting blade is located in level line I of the apparatus of the invention before starting the operation. Figure 4: The view showing that the lifting blade reaches its final state at level line II of the apparatus of the invention after starting the operation.

Figure 5: The view when the lifting blade of the apparatus opens and enters into the maxilla alveolar bone during the operation.

The parts in the figures are numbered individually and the equivalents of these numbers are given below.

1. Upper part

2. Lower part

3. Lifting blade

4. Clamping collar

5. Handle

6. Ring

7. Level line I

8. Level line II

9. Maxilla alveolar bone

10. Sinus membrane

The invention relates to the crestal approach maxillary sinus lifting osteotome apparatus, comprising

- the lower part (2), which has a cavity and thus prevents damage to the sinus membrane (10),

- the lifting blade (3), which is located between the upper part (1) and the lower part (2) and provides the forward movement within the maxilla alveolar bone (9) in a controlled manner at a certain depth due to its bearing in the cavity in the lower part (2),

- the clamping collar (4) which fixes the lifting blade (3) by surrounding the upper part (1) and the lower part (2) after the lifting blade (3) is placed between the upper part (1) and the lower part (2), - the handle (5) which is connected to the lifting blade (3) and allows the lifting blade (3) to move within the bone by applying impacts by the hammer,

- the ring (6) which is located at the head part of the upper part (1) and the lower part (2) of the body and prevents the apparatus from entering the hole drilled in the maxilla alveolar bone (9).

In the osteotome apparatus, all parts of which are made of non-harmful surgical stainless steel, the lifting blade (3) is in the back position when the apparatus is first placed in the maxilla alveolar bone (9) cavity drilled in the jaw. The position of the osteotome apparatus placed on the maxilla alveolar bone (9) is determined by the ring (6) and it is prevented from moving further. The clamping collar (4) around the upper part (1) and the lower part (2) of the body keeps the divided parts of the apparatus together and helps to compress. Thus, the lifting blade (3) is centered between the two outer bodies. An impact is applied by the hammer to the handle (5) mounted on the moving lifting blade (3) and the lifting blade (3) moves forward within the maxilla alveolar bone (9).

The dentist determines the position to place the apparatus by using the patient's film obtained by imaging. There are level lines on the lifting blade (3), which moves forward within the maxilla alveolar bone (9) with hammer impacts, to adjust the position and not damage the sinus membrane (10).

The developed sinus lifting osteotome apparatus is a mechanical osteotome apparatus used in sinus lifting surgical operations. The developed osteotome apparatus has a design to enable a wider drilling process on the surface. During the sinus lifting process, while the lifting blade (3), which is placed between the upper part (1) and the lower part (2), moves forward within the maxilla alveolar bone (9) with the hammer impacts applied to the handle (5), the lifting blade (3) opens outwards and the wider drilling process is performed on a surface. There are 2 level lines on the lifting blade (3), level line I (7), and level line II (8). The indicated level lines can show the depth of the hole drilled in the maxilla alveolar bone (9). The ring (6) prevents excessive insertion into the hole drilled in the maxilla alveolar bone (9), and thus prevents damage to the sinus membrane (10). There is a cavity in the section on the lower part (2) where the lifting blade (3) is placed. Before starting the operation, while the lifting blade (3) is located in the center of this cavity, level line I (7) is aligned with the end of the lower part (2), as seen in Figure 3. When an impact is applied by the hammer to the handle (5), the lifting blade (3) moves forward in a limited amount over the cavity on the lower part (2). The level line II (8) on the lifting blade (3) becomes aligned with the end of the lower part (2), as seen in Figure 4. With a precaution taken inside the osteotome apparatus, the lifting blade (3) cannot move further. The end of the lifting blade (3) made of heat-treated stainless steel fits the form of the outer body parts and stretches outward and provides a larger diameter drilling in the maxilla alveolar bone (9).

The advantages obtained with the developed osteotome apparatus are listed below.

- It provides the lifting process without damaging the sinus membrane (10) in the maxillary sinus lifting processes.

- While the lifting blade (3) moves forward within the maxilla alveolar bone (9) with the hammer impacts, it opens outwards and allows a wider drilling process on the surface and more bone volume.

- The risk of damaging the sinus membrane (10) is prevented by preventing the lifting blade (3) from moving beyond a certain level since it includes a ring (6).

- As it includes the level settings, the lifting blade (3) is prevented from moving beyond a certain level.

- It allows the process to be performed without grafts and the bone to be formed naturally.

- The damage caused by the graft to the patient was eliminated by performing the process without grafts.

- A less costly method is provided by performing the process without grafts.