Annular ultrasonic osteotome for lifting operation in maxillary sinus
By designing an annular ultrasonic bone knife for maxillary sinus lifting, combining the functions of the cutting head and the water-stripping head, the problem of difficulty in retaining the subsinus cortical bone and reducing the perforation rate in the prior art is solved, and a safe and efficient maxillary sinus lifting effect is achieved.
Patent Information
- Application Number
- CN202421670503.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-15
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-07-15
AI Technical Summary
The existing maxillary intrasonic lifting techniques are difficult to preserve the subsinus cortical bones and reduce the perforation rate of the maxillary sinus membrane.
A ring-shaped ultrasonic bone knife is designed, including a cutting head and a water stripper, which achieves low risk preparation through the holes of the cutting head and cooling waterways, and peels off the maxillary sinus membrane through the water pressure and ultrasonic vibration of the water stripper.
It effectively reduces the risk of perforation of maxillary sinus membrane, retains the subsinus membrane cortical bone, and achieves safe, fast, efficient and stable maxillary sinus lifting.
Smart Images
Figure CN222929798U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of medical devices, and particularly relates to an annular ultrasonic osteotome for maxillary sinus internal sinus floor elevation surgery. Background Art
[0002] An ultrasonic osteotome uses high-intensity focused ultrasound technology to convert electrical energy into mechanical energy. Through high-frequency ultrasonic vibration, the water vapor in the contacted tissue cells is vaporized. During the operation, bone tissue can be completely cut, and it only has a destructive effect on bone tissue with a specific hardness, which can reduce the probability of damage to soft tissues such as the maxillary sinus membrane.
[0003] Maxillary sinus internal sinus floor elevation surgery is one of the major surgical methods for maxillary sinus elevation. The maxillary sinus is a conical cavity located within the maxilla. The bone itself forms the wall of the sinus. Most of it is a thin compact bone plate, with a little cancellous bone inside. The thinnest part is only composed of compact bone. The inner surface of the bone is directly covered by the maxillary sinus mucosa. The blood vessels and nerves leading to the teeth and periodontal tissues pass through the alveolar canals in the bone or under the mucosa. The posterior maxillary teeth are adjacent to the floor of the maxillary sinus. When there is a dentition defect in the posterior maxillary tooth area and dental implantation is required in this area, in addition to considering the width of the alveolar ridge at the implant site, it is also necessary to consider whether the height from the alveolar ridge crest to the floor of the maxillary sinus is sufficient. If sufficient height cannot be obtained, it is necessary to elevate the maxillary sinus membrane in terms of height so that the implant can be implanted under sufficient conditions. The surgery to elevate the maxillary sinus membrane is called "maxillary sinus elevation surgery". The key to maxillary sinus internal sinus floor elevation surgery is to break through the bone at the floor of the maxillary sinus without damaging the mucosa at the floor of the maxillary sinus, and then, by placing bone grafting materials between the two, achieve the elevation of the alveolar bone height.
[0004] Clinically, there are generally two traditional surgical methods for elevating the maxillary sinus membrane. Their specific implementation methods are respectively as Figure 1-2As shown in the figure. The specific implementation of the first traditional surgical method is as follows: Use a circumcision drill, a pioneer drill or a reamer to prepare to a position about 2 mm away from the maxillary sinus membrane, and then use a bone compactor drill to cause a greenstick fracture of the alveolar bone retained under the maxillary sinus mucosa. Using this fractured bone block as a bearing surface, use a bone compactor, water injection hydraulic pressure or other forces to generate a thrust on this free bone block, so that the fractured bone block and the maxillary sinus membrane are lifted to an appropriate height together; Since this method lifts the whole free bone block and the maxillary sinus membrane together, the advantage is that since the bone compactor drill and the reamer have no chance to directly contact the maxillary sinus membrane, the probability of perforation of the maxillary sinus membrane will be greatly reduced. However, at the same time, when implanting the implant, the clamping effect of the cortical bone of that part of the free bone block on the implant is also lost; while the specific implementation of the second traditional surgical method is to use a preparation drill to reach the maxillary sinus mucosa, and then place bone powder, CGF or collagen under the sinus membrane, and use a bone compactor drill to lift the bone powder, CGF or collagen and the maxillary sinus membrane to an appropriate height; Since the reamer directly reaches under the sinus membrane, the cortical bone under the sinus membrane is fully retained, which will provide sufficient clamping effect for the subsequent implantation of the implant and provide sufficient initial stability. However, in this method, the reamer directly contacts the maxillary sinus membrane, increasing the probability of perforation of the maxillary sinus membrane. Utility Model Content
[0005] In view of the above content, it is necessary to provide an annular ultrasonic bone knife for maxillary sinus internal lifting surgery, which can not only completely retain the cortical bone under the sinus membrane but also reduce the perforation rate of the maxillary sinus membrane during the transalveolar maxillary sinus membrane lifting surgery.
[0006] To achieve the above object, the technical solution adopted by the present utility model is as follows: A circular ultrasonic osteotome for maxillary sinus internal elevation, comprising a working handle, a working head is detachably mounted on the working handle, the working head includes a cutting head and a water stripping head, and the cutting head and the water stripping head are not installed on the working handle at the same time; the cutting head includes a first connecting section and a cutting edge section, one end of the first connecting section is detachably connected to the working handle through a first connecting portion, the other end of the first connecting section is connected to the cutting edge section, the cutting edge section is hollow inside, and an end of the cutting edge section not connected to the first connecting section is provided with a cutting edge, a perforation is provided on the cutting edge section, the perforation communicates with the hollow part of the cutting edge section, and the perforation is located between the cutting edge and the connection of the cutting edge section to the first connecting section; the thickness of the cutting edge gradually increases from one end of the cutting edge section towards the perforation; the water stripping head includes a second connecting section and a water outlet section, one end of the second connecting section is detachably connected to the working handle through a second connecting portion, the other end of the second connecting section is connected to one end of the water outlet section, and an angular relationship is formed between the second connecting portion and the water outlet section; the other end of the water outlet section is provided with a stripping water outlet; a stripping water channel is provided inside the water stripping head, the stripping water channel extends from the second connecting section to the water outlet section and communicates with the stripping water outlet, wherein the stripping water channel is located at one end of the second connecting section and communicates with the water inlet pipe on the working handle when the second connecting section is connected to the working handle.
[0007] Further, a cooling water channel is provided inside the first connecting section, both ends of the cooling water channel extend to both ends of the first connecting section, one end of which communicates with the water inlet pipe on the working handle when the first connecting section is connected to the working handle, and the other end communicates with the hollow part of the cutting edge section.
[0008] Further, an angular relationship is formed between the first connecting portion and the cutting edge section, and the angle between the first connecting section and the cutting edge section is 120°.
[0009] Further, a total of two perforations are provided on the cutting edge section, and the two perforations are respectively arranged on opposite sides in the radial direction of the perforation part.
[0010] Further, the perforation is in an elliptical structure.
[0011] Further, both the first connecting portion and the second connecting portion are threaded structures, and the working head is detachably connected to the working handle through the threaded structure.
[0012] Further, a first scale is provided on the cutting edge section, and the first scale extends from the end where the cutting edge is located to the perforation; a second scale is provided on the water outlet section, and the second scale extends from the end of the water outlet section where the stripping water outlet is provided to the other end close to the water outlet section.
[0013] Further, the cutting head and the water stripping head are both provided with different specifications.
[0014] Further, the water outlet section is frustum-shaped, with the smaller cross-sectional area bottom surface of the frustum connected to the second connection section, and the stripping water outlet is opened on the other bottom surface with a larger cross-sectional area, and the stripping water outlet is arranged on the edge of this bottom surface.
[0015] Further, two stripping water outlets are provided on the water outlet section, and the two stripping water outlets are respectively arranged on the opposite sides in the radial direction of the water outlet section; the stripping water channel is divided into two branches inside the water outlet section, and one branch corresponds to and communicates with one stripping water outlet.
[0016] Compared with the prior art, the present utility model has the following beneficial effects:
[0017] 1. The annular ultrasonic osteotome provided by the present utility model can effectively reduce the risk of maxillary sinus membrane perforation during the preparation of a conventional preparation drill, and can also provide cortical bone clamping near the maxillary sinus membrane in the osteotome method; it realizes both safe and fast, and efficient and stable maxillary sinus lifting; its structure is simple and it is easy to manufacture and install.
[0018] 2. During the process of performing a maxillary sinus lift, the cutting head of the present utility model can be directly used to prepare up to the maxillary sinus membrane, which can realize low-risk direct preparation under the maxillary sinus membrane and reduce the probability of maxillary sinus membrane perforation; in addition, since the thickness of the cutting edge of the cutting head gradually increases to form a tapered edge, when removing the ultrasonic osteotome, it is possible to avoid taking out the bone column that needs to remain in the alveolar bone under the action of friction, and it is possible to retain part of the bone column in the implant socket during the preliminary preparation process; moreover, during the use process, the cooling water passage is always open, and the perforations on the perforated part can not only serve as a channel for cooling water to enter the working area, realizing a relatively wide cooling channel during the preparation process, but also can intervene in the bone column through the perforations to further prevent the friction from taking out the bone column together.
[0019] 3. After the preparation is completed, the water pressure is released through the stripping water outlet on the water stripping head, which can generate an impact force on the sinus membrane and has a stripping effect. And at this time, the top of the water stripping head is a plane, and the ultrasound continuously vibrates to further strip the maxillary sinus membrane, which is convenient for osteotome. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the first traditional method in the existing internal maxillary sinus lift.
[0021] Figure 2 It is a schematic diagram of the second traditional method in the existing internal maxillary sinus lift.
[0022] Figure 3 It is a front view of the cutting head.
[0023] Figure 4 It is a top view of the cutting head.
[0024] Figure 5 It is a sectional view of the cutting head.
[0025] Figure 6 It is a front view of the water stripping head.
[0026] Figure 7 It is a schematic diagram of the usage method of the annular ultrasonic osteotome provided by the present utility model for maxillary sinus floor elevation.
[0027] Description of main component symbols
[0028] In the figure: 1 - cutting head, 11 - first connecting section, 111 - first connecting part, 112 - cooling water channel, 113 - cooling water outlet
[0029] 12 - blade section, 121 - blade, 122 - perforation, 123 - first scale
[0030] 2 - water stripping head, 21 - second connecting section, 211 - second connecting part
[0031] 22 - water outlet section, 221 - second scale, 222 - stripping water outlet, 223 - stripping water channel
[0032] The following specific embodiments will further illustrate the present utility model in conjunction with the above-mentioned drawings. Specific embodiments
[0033] Please refer to Figure 3-7 , in a preferred embodiment of the present utility model, an annular ultrasonic osteotome for maxillary sinus floor elevation includes a working handle, and a working head is detachably installed on the working handle. Preferably, the working head is detachably connected to the working handle through a threaded structure. It is prior art that the annular ultrasonic osteotome has a working handle, which is not shown in the drawings. Further, the working head includes a cutting head 1 and a water stripping head 2, and the cutting head 1 and the water stripping head 2 are not installed on the working handle at the same time; it is convenient to switch between the cutting head 1 and the water stripping head 2 according to the needs of the operation method. In addition, both the cutting head 1 and the water stripping head 2 are provided with different specifications, which are 3.5 mm, 4.0 mm, 4.5 mm or 5.0 mm in diameter respectively. The cutting head 1 and the water stripping head 2 with suitable specifications can be selected according to actual needs, and the applicable range is relatively wide.
[0034] Furthermore, the cutting head 1 includes a first connecting section 11 and a blade section 12, one end of the first connecting section 11 is detachably connected to the working handle through a first connecting portion 111, and in the present embodiment, the first connecting portion 111 is a threaded structure; the other end of the first connecting section 11 is connected to the blade section 12, the inside of the blade section 12 is hollow, and the end of the blade section 12 that is not connected to the first connecting section 11 is provided with a blade 121, and a hollow hole 122 is opened on the blade section 12, the hollow hole 122 is connected to the hollow part of the blade section 12, and the hollow hole 122 is located between the blade 121 and the connection between the blade section 12 and the first connecting section 11; the thickness of the blade 121 gradually increases from one end of the blade section 12 toward the hollow hole 122, and the structural section of the blade 121 is triangular, and this structural section refers to the blade section The outer wall and the inner wall form a cross-section; preferably, the length of the blade 121 is about 4 mm. The cutting head 1 of the utility model has extremely low cutting ability for soft tissue, so during the maxillary sinus lift, the operator can directly use the cutting head 1 to prepare to the maxillary sinus membrane, and can achieve low-risk direct preparation under the maxillary sinus membrane during the maxillary sinus lift; in addition, since the thickness of the blade 121 of the cutting head 1 gradually increases to form a tapered blade, when removing the ultrasonic bone knife, the situation of the bone column that needs to be retained in the alveolar bone being brought out due to the effect of friction can be reduced, and part of the bone column can be retained in the implant socket during the initial preparation process; if the bone column is brought out due to friction, the bone column can be intervened through the hole 122 to further prevent the friction from bringing the bone column out.
[0035] Preferably, a cooling water channel 112 is provided in the first connection section 11, and both ends of the cooling water channel 112 extend to both ends of the first connection section 11, one end of which is connected to the water inlet pipe on the working handle when the first connection section 11 is connected to the working handle, and the other end is connected to the hollow part of the blade section 12. In this embodiment, the cooling water channel 112 is connected to the hollow part of the blade section 12 through the cooling water outlet 113, and the cooling water channel 112 and the water inlet pipe are connected to form a cooling water channel. During use, the cooling water channel is always open to provide water cooling, and the perforations 122 can be used as a channel for cooling water to enter the working area. In this embodiment, the first connection portion 111 and the blade section 12 are in an angled relationship, and the angle between the first connection portion 111 and the blade section 12 is 120°, which is convenient for surgical operations. More preferably, the blade section 12 is provided with two holes 122, which are respectively provided on opposite sides of the blade section 12 in the radial direction, so that cooling water can enter the working area from both sides, and the cooling effect is better; in addition, if the bone column is brought out due to friction, it is more convenient to intervene in the bone column if holes 122 are provided on both sides. In addition, in this embodiment, the holes 122 are elliptical structures.
[0036] Further, the water stripping head 2 includes a second connecting section 21 and a water outlet section 22. One end of the second connecting section 21 is detachably connected to the working handle through a second connecting portion 211. In this embodiment, the second connecting portion 211 is a threaded structure; the other end of the second connecting section 21 is connected to one end of the water outlet section 22, and there is an angular relationship between the second connecting portion 211 and the water outlet section 22, such as 120°; a stripping water outlet 222 is provided at one end of the water outlet section 22; a stripping water channel 223 is provided in the water stripping head 2, and the stripping water channel 223 extends from the second connecting section 21 to the water outlet section 22 and communicates with the stripping water outlet 222. Among them, the stripping water channel 223 is located at one end of the second connecting section 21 and communicates with the water inlet pipe on the working handle when the second connecting section 21 is connected to the working handle. During use, the water pressure is released through the stripping water outlet 222 on the water stripping head 2, which can generate an impact force on the sinus membrane and has the function of stripping. Preferably, the water outlet section 22 is frustum-shaped, and the smaller cross-sectional area bottom surface of the frustum is connected to the second connecting section 21, and the stripping water outlet 222 is provided on the other bottom surface with a larger cross-sectional area, and the stripping water outlet 222 is provided at the edge of this bottom surface. While the stripping water outlet 222 generates an impact force on the sinus membrane, the flat plane of the frustum is used to further strip the maxillary sinus membrane through continuous ultrasonic vibration. In addition, two stripping water outlets 222 are provided on the water outlet section 22, and the two stripping water outlets 222 are respectively arranged on the opposite sides in the radial direction of the water outlet section 22; the stripping water channel 223 is divided into two branches inside the water outlet section 22, and one branch corresponds to and communicates with one stripping water outlet 222, and the impact force is generated on the sinus membrane through the two stripping water outlets 222 on both sides at the same time, and the stripping effect is better
[0037] Preferably, a first scale 123 is provided on the cutting edge section 12. The first scale 123 extends from the end where the cutting edge 121 is located to the perforation 122; a second scale 221 is provided on the water outlet section 22. The second scale 221 extends from the end of the water outlet section 22 where the stripping water outlet 222 is provided to the other end close to the water outlet section 22. The scale can be used to indicate the prepared depth
[0038] The specific implementation process of using the present utility model is as follows:
[0039] First, select a cutting head 1 and a water stripping head 2 of suitable diameter, and thread the cutting head 1 with the working handle through the first connecting part 111 to test the ultrasonic working state and water discharge. At this time, the working head has mechanical energy and water discharge. When the height of the alveolar ridge at the surgical site is sufficient (4-8mm), it is necessary to first use a conventional preparation drill to prepare to about 2mm below the maxillary sinus membrane, and then use the cutting head 1 of the utility model to prepare to the maxillary sinus membrane, leaving the remaining 2mm long bone column in the implantation nest. If the bone column is taken out together due to friction, the bone column can also be intervened through the hollow hole 122. At this time, the cutting head 1 on the working handle is replaced with a water stripping head 2 of the same diameter specification through the second connecting part 211, and the water stripping head 2 is placed at the bone column prepared by the cutting head 1 and retained in the implantation nest. The maxillary sinus mucosa is stripped by using the released water pressure and ultrasonic oscillation. After the stripping is completed, the maxillary sinus membrane can be lifted by traditional methods such as the bone squeezer top punching method or the water flushing method. The annular ultrasonic bone cutter provided by the utility model has great adaptability to the top punching method of the bone squeezer. During the top punching process, it not only provides a piece of bone as a fulcrum for the top punching, but also provides cortical bone around the implant, so that the implant can have stronger initial stability when implanted.
[0040] The above description is a detailed description of the preferred feasible embodiment of the utility model, but the embodiment is not used to limit the scope of the patent application of the utility model. All equivalent changes or modified changes completed under the technical spirit suggested by the utility model should fall within the patent scope covered by the utility model.
Claims
1. A ring-shaped ultrasonic osteotome for maxillary sinus lifting, comprising a working handle, on which a working head is detachably mounted, characterized in that: The working head comprises a cutting head and a water stripping head, and the cutting head and the water stripping head are not installed on the working handle at the same time; the cutting head comprises a first connecting section and a blade section, one end of the first connecting section is detachably connected to the working handle through a first connecting portion, and the other end of the first connecting section is connected to the blade section, the blade section is hollow, and the end of the blade section not connected to the first connecting section is provided with a blade, and a hollow hole is opened on the blade section, the hollow hole is connected to the hollow part of the blade section, and the hollow hole is located between the blade section and the connection point where the blade section connects to the first connecting section; the thickness of the blade section is determined by the thickness of the blade section. One end of the segment gradually increases in size toward the hollowing direction; the water stripping head includes a second connecting segment and a water outlet segment, one end of the second connecting segment is detachably connected to the working handle through a second connecting portion, the other end of the second connecting segment is connected to one end of the water outlet segment, and the second connecting portion and the water outlet segment are in an angular relationship; a stripping water outlet is provided at the other end of the water outlet segment; a stripping water channel is provided in the water stripping head, the stripping water channel extends from the second connecting segment to the water outlet segment, and is connected to the stripping water outlet, and the stripping water channel is connected to the water inlet pipe on the working handle when the second connecting segment is connected to the working handle.
2. The annular ultrasonic osteotome according to claim 1, characterized in that: A cooling water channel is provided in the first connecting section, and both ends of the cooling water channel extend to both ends of the first connecting section, one end of which is connected to the water inlet pipe on the working handle when the first connecting section is connected to the working handle, and the other end is connected to the hollow part of the blade section.
3. The annular ultrasonic osteotome according to claim 1, characterized in that: There is an angle relationship between the first connecting portion and the blade section, and the angle between the first connecting section and the blade section is 120°.
4. The annular ultrasonic osteotome according to claim 1, characterized in that: The blade section is provided with two hollow holes, which are respectively arranged on opposite sides of the hollow hole portion in the radial direction.
5. The annular ultrasonic osteotome according to claim 1, characterized in that: The hollow holes are in an elliptical structure.
6. The annular ultrasonic osteotome according to claim 1, characterized in that: The first connection portion and the second connection portion are both threaded structures, and the working head is detachably connected to the working handle via the threaded structure.
7. The annular ultrasonic osteotome according to claim 1, characterized in that: The blade section is provided with a first scale, which extends from the end where the blade is located to the hollow hole; the water outlet section is provided with a second scale, which extends from one end of the water outlet section where the stripping outlet is provided to the other end close to the water outlet section.
8. The annular ultrasonic osteotome according to claim 1, characterized in that: The cutting head and the water stripping head are both provided with different specifications.
9. The annular ultrasonic osteotome according to claim 1, characterized in that: The water outlet section is in a truncated cone shape, a bottom surface with a smaller cross-sectional area of the truncated cone is connected to the second connecting section, and the other bottom surface with a larger cross-sectional area is provided with the stripping outlet, and the stripping outlet is arranged on the edge of the bottom surface.
10. The annular ultrasonic osteotome according to claim 9, characterized in that: The water outlet section is provided with two stripping water outlets, which are arranged on opposite sides of the water outlet section in radial direction; the stripping water channel is divided into two branches inside the water outlet section, and one branch channel is connected to one stripping water outlet.