CN113143396A

CN113143396A - Ultrasonic osteotome for annular bone extraction

Info

Publication number: CN113143396A
Application number: CN202110533993.9A
Authority: CN
Inventors: 朱黎黎; 李特; 冯维华; 何海涛
Original assignee: Chinese Peoples Liberation Army Army Specialized Medical Center
Current assignee: Chinese Peoples Liberation Army Army Specialized Medical Center
Priority date: 2021-05-17
Filing date: 2021-05-17
Publication date: 2021-07-23
Anticipated expiration: 2041-05-17
Also published as: CN113143396B

Abstract

The invention provides an ultrasonic osteotome for annular bone extraction, which comprises a handle; the protective cover is arranged at the left end of the handle and is connected with the handle through a spigot structure; the anti-touch device is arranged on the outer side of the handle; the rotating device is arranged in the handle, the left side and the right side of the rotating device are provided with the adjusting devices, and the mounting directions of the two groups of adjusting devices are opposite; the connecting device is arranged in the handle, and a fixing device is arranged outside the connecting device; the cutting device is arranged inside the fixing device; the limiting devices are arranged in twelve groups, and the twelve groups of limiting devices are arranged on the front side and the rear side inside the handle, so that the limiting device is more stable in use, the success rate of the operation is increased, the protective cover avoids the damage of the cutter head on one hand, the service life of the cutter head is prolonged, the cutter head is prevented from being exposed to the outside for a long time when not in use, the bacterial infection is easily caused, and the use safety of the invention is improved.

Description

Ultrasonic osteotome for annular bone extraction

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to an ultrasonic osteotome for annular bone extraction.

Background

The ultrasonic bone knife is an innovative technology, has the characteristics and advantages which can not be compared with a plurality of traditional manual and electric orthopedic surgical instruments, utilizes a high-intensity focused ultrasonic technology, converts electric energy into mechanical energy through a transducer, vaporizes water in tissue cells contacted by the transducer through high-frequency ultrasonic oscillation, breaks protein hydrogen bonds, and thoroughly destroys bone tissues needing to be cut in an operation.

If the application number is: CN201110195962.3 discloses an ultrasonic osteotome head, which comprises a blade and an incision, wherein an included angle is formed between the longitudinal central axis of the blade and the longitudinal central axis of the incision, a cutting edge is arranged at the front end of the incision, and the center of the cutting edge is positioned at the longitudinal central axis of the incision.

Based on the foregoing, the inventor discovers, present supersound osteotome is when using, the quick accurate regulation tool bit angle of doctor of being not convenient for, lead to the doctor to be convenient inadequately when using different positions, doctor's intensity of labour and the operation degree of difficulty have been increased on the one hand, on the other hand has increased operating time, and then increased the operation risk, and present supersound osteotome, lack protection architecture, make the device easily cause the damage to the tool bit when taking place to drop, and the tool bit exposes easy bacterial infection for a long time, the safety in utilization of device has been reduced, secondly present supersound osteotome waste time is longer when the tool bit, patient's misery has been increased, and it is inconvenient inadequately to get the bone to the annular, present supersound osteotome has satisfied current user demand.

Disclosure of Invention

In order to solve the technical problems, the invention provides an ultrasonic osteotome for annular osteotomy, which aims to solve the problems that a doctor is inconvenient to adjust the angle of an osteotome head when using different parts, the osteotome head is easy to damage and is easy to be infected by bacteria, time is wasted when exchanging the osteotome, and annular osteotomy is inconvenient.

The invention is used for the purpose and the efficacy of the ultrasonic osteotome for annular bone extraction, and is achieved by the following specific technical means:

an ultrasonic osteotome for annular osteotomy includes a handle;

the protective cover is arranged at the left end of the handle, the protective cover is connected with the handle through a spigot structure, and the interior of the protective cover is of a hollow structure;

the anti-touch device is arranged on the outer side of the handle;

the rotating device is arranged inside the handle, the left side and the right side of the rotating device are provided with the adjusting devices, and the installation directions of the two groups of adjusting devices are opposite;

the connecting device is arranged inside the handle, and a fixing device is arranged outside the connecting device;

a cutting device installed inside the fixing device;

and the limiting devices are totally provided with twelve groups, the twelve groups of limiting devices are arranged on the front side and the rear side inside the handle, and the twelve groups of limiting devices are annularly and equidistantly distributed.

Further, the adjusting device includes:

the trigger device is arranged inside the handle;

the driving device is arranged at the inner end of the trigger device;

and the elastic piece is arranged between the driving device and the handle.

Further, the fixing device includes:

the fixed block is fixedly connected with the second connecting shaft, the right end of the fixed block is of a hemispherical structure, and two guide grooves are formed in the fixed block;

the moving blocks are arranged in total, and the two moving blocks are connected to the inner part of the fixed block in a sliding manner;

the extension springs are arranged in two, and the two extension springs are arranged between the two moving blocks and the fixed block.

Further, the driving device includes:

the driving rod is fixedly connected with the limiting column;

the two connecting pieces are arranged and rotatably arranged inside the driving rod;

the driving block is arranged in the driving rod, the outer side of the driving block is flush with the outer side of the driving rod, the driving block is rotatably connected with the two connecting pieces, and the driving block is meshed with the first gear;

the elastic sheet is fixedly arranged at the bottom of the driving block through a screw, and the elastic sheet is tightly attached to the driving rod.

Further, the touch preventing device includes:

the hollow pipe is rotatably connected with the handle;

six balls are arranged in the hollow pipe, and springs are arranged on the inner sides of the six balls;

two through holes are arranged in total and run through the hollow tube.

Further, the cutting device includes:

the connecting rod is connected with the fixed block in a sliding manner;

the cutter head is fixedly arranged on the left side of the connecting rod and is of an arc structure;

the two sliding blocks are arranged and are connected inside the connecting rod in a sliding manner;

the springs I are two in total, and the two springs I are arranged between the two sliding blocks and the connecting rod.

Further, the connecting device includes:

the second connecting shaft is rotatably connected with the handle;

and the third gear is fixedly connected with the second connecting shaft, and the third gear is meshed with the second gear.

Further, the rotating device includes:

the first connecting shaft is rotatably connected with the handle;

the first gear is fixedly arranged at the center of the first connecting shaft;

the two gears II are fixedly connected with the first connecting shaft, the two gears II are located on the front side and the rear side of the first gear, and thirty fixing holes are annularly formed in the outer sides of the two gears II.

Further, stop device includes:

the mounting seat is fixedly connected with the handle through a screw;

the limiting block is slidably arranged inside the mounting seat, and the outer end of the limiting block is of a hemispherical structure;

and the second spring is arranged between the limiting block and the handle.

Further, the triggering device includes:

the limiting column is connected with the handle in a sliding manner;

trigger the head, trigger the head and install in the outer end of spacing post, and trigger the head and be cylindrical structure to trigger the head and set up with the through-hole is concentric.

The invention at least comprises the following beneficial effects:

1. the arrangement of the hollow tube avoids the mistaken touch of two trigger heads when the multifunctional scalpel is used, the normal use of the multifunctional scalpel is ensured, the operation precision is improved, the arrangement of six balls enables the hollow tube to be fixedly connected with the handle after rotation, the multifunctional scalpel is convenient for a doctor to use, the arrangement of twelve groups of limiting devices enables the multifunctional scalpel to be more stable when the multifunctional scalpel is used, the success rate of the operation is increased, and the arrangement of the protective cover avoids damage of a scalpel head and prolongs the service life of the scalpel head, and avoids the fact that the scalpel head is exposed to outside easily infected by bacteria when the multifunctional scalpel head is not used, and the use safety of the multifunctional scalpel is improved.

2. The two sliding blocks are arranged, so that the connecting rod and the fixed block are connected more firmly, the phenomenon that the screwdriver shakes during use is avoided, the use stability of the screwdriver is improved, the two sliding blocks are arranged, when a doctor presses the two sliding blocks, the two sliding blocks move downwards, the screwdriver is convenient to install and take down, the tool changing speed is improved, the operation time is reduced, the pain of a patient is reduced, the screwdriver is in an arc-shaped structure, the screwdriver is convenient to use for annular bone taking, the cutting position is smoother, and the later recovery of the patient is facilitated.

3. The driving device is arranged to facilitate the angle adjustment of the cutting device, the driving block is rotatably connected inside the driving rod through the connecting piece, the driving block drives the gear to rotate when a doctor presses the trigger head, the elastic piece is arranged between the driving rod and the handle, the trigger head is enabled to move outwards after being pressed, multiple times of adjustment of the doctor is facilitated, and the twelve groups of limiting devices are arranged inside the handle, so that the driving block moves inwards when the driving device moves outwards, the unidirectional angle adjustment is realized, the cutting device is convenient for the doctor to use when the doctor cuts different parts, great convenience is provided for the doctor, and the success rate of the operation is further improved.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic view of the structure of the protection cover of the invention after being opened.

Fig. 3 is a partially cut-away schematic view of the handle and the anti-touch device of the present invention.

Fig. 4 is a schematic view of the structure of the internal parts of the present invention.

Fig. 5 is a partially enlarged structural view of the area a in fig. 4 according to the present invention.

Fig. 6 is a partially cut-away schematic view of the fixing device and the cutting device of the present invention.

Fig. 7 is a partially enlarged structural view of the region B in fig. 6 according to the present invention.

Fig. 8 is a partially enlarged structural view of the region C in fig. 5 according to the present invention.

Fig. 9 is a structural schematic diagram of the adjusting device of the invention after being cut at the center.

Fig. 10 is a partially cut-away schematic view of the adjusting device of the present invention.

Fig. 11 is a schematic view of the construction of the rotating means and the connecting means of the present invention.

Fig. 12 is a schematic structural diagram of another embodiment of the present invention.

In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

1. a handle;

2. a touch prevention device; 201. a hollow tube; 202. a ball bearing; 203. a through hole;

3. a protective cover;

4. a rotating device; 401. a first connecting shaft; 402. a first gear; 403. a second gear; 4031. a fixing hole;

5. an adjustment device; 501. a trigger device; 5011. a limiting column; 5012. a trigger head; 502. a drive device; 5021. a drive rod; 5022. a connecting member; 5023. a drive block; 5024. an elastic sheet; 503. an elastic member;

6. a connecting device; 601. a second connecting shaft; 602. a third gear;

7. a fixing device; 701. a fixed block; 702. a moving block; 703. a tension spring;

8. a cutting device; 801. a connecting rod; 802. a cutter head; 803. a slider; 804. a first spring;

9. a limiting device; 901. a mounting seat; 902. a limiting block; 903. and a second spring.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," "two ends," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing and simplifying the description, and are not intended to indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be understood broadly, and for example, they may be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

Example (b):

as shown in figures 1 to 12:

the invention provides an ultrasonic osteotome for annular bone extraction, which comprises a handle 1;

the left end of the handle 1 is provided with a protective cover 3, the protective cover 3 is connected with the handle 1 through a spigot structure, and the interior of the protective cover 3 is of a hollow structure;

the anti-touch device 2 is arranged on the outer side of the handle 1;

the rotating device 4 is installed inside the handle 1, the adjusting devices 5 are installed on the left side and the right side of the rotating device 4, and the installation directions of the two groups of adjusting devices 5 are opposite;

the connecting device 6 is arranged inside the handle 1, and the fixing device 7 is arranged outside the connecting device 6;

the cutting device 8, the cutting device 8 is installed inside the fixing device 7;

the limiting devices 9 and the limiting devices 9 are provided with twelve groups, the twelve groups of limiting devices 9 are arranged on the front side and the rear side of the inside of the handle 1, and the twelve groups of limiting devices 9 are annularly distributed at equal intervals.

As shown in fig. 3, the touch preventing device 2 includes:

the hollow pipe 201, the hollow pipe 201 is connected with the handle 1 in a rotating way;

six balls 202 are arranged, the six balls 202 are arranged in the hollow pipe 201, and springs are arranged inside the six balls 202;

the through holes 203 and the through holes 203 are two in number, the two through holes 203 penetrate through the hollow tube 201, the arrangement of the hollow tube 201 avoids the error touch of the two trigger heads 5012 during use, the normal use of the invention is ensured, the operation precision is improved, and the arrangement of the six balls 202 ensures that the hollow tube 201 is fixedly connected with the handle 1 after rotation, so that the use by a doctor is facilitated.

As shown in fig. 9, the adjusting device 5 includes:

the trigger device 501, the trigger device 501 is installed inside the handle 1;

the driving device 502, the driving device 502 is installed at the inner end of the trigger device 501;

an elastic member 503, the elastic member 503 being installed between the driving means 502 and the handle 1, the triggering means 501 comprising:

the limiting column 5011 is connected with the handle 1 in a sliding mode;

the trigger head 5012, the trigger head 5012 are installed in the outer end of the spacing post 5011, and the trigger head 5012 is a cylindrical structure, and the trigger head 5012 and the through hole 203 are concentrically arranged, and the driving device 502 includes:

the driving rod 5021 and the driving rod 5021 are fixedly connected with the limit post 5011;

the number of the connecting pieces 5022 is two, and the two connecting pieces 5022 are rotatably mounted inside the driving rod 5021;

the driving block 5023 and the driving block 5023 are mounted inside the driving rod 5021, the outer side of the driving block 5023 is flush with the outer side of the driving rod 5021, the driving block 5023 is rotatably connected with the two connectors 5022, and the driving block 5023 is in meshed connection with the first gear 402;

elastic sheet 5024, elastic sheet 5024 passes through screw fixed mounting in the bottom of drive block 5023, and closely laminate between elastic sheet 5024 and the actuating lever 5021, drive arrangement 502's setting, be convenient for adjust cutting device 8's angle, be connected with drive block 5023 because of the rotation of the inside connecting piece 5022 that passes through of actuating lever 5021, drive block 5023 drives a 402 rotation of gear when the doctor presses trigger head 5012, and install elastic component 503 between actuating lever 5021 and the handle 1, make trigger head 5012 press the back outwards to remove, be convenient for the doctor to carry out a lot of regulation, again because of handle 1 internally mounted has twelve groups of stop device 9, drive block 5023 inwards removes when making drive arrangement 502 outwards to remove, unidirectional angle modulation has been realized, provide very big facility for the doctor, and then the success rate of operation has been improved.

As shown in fig. 11, the rotating device 4 includes:

the first connecting shaft 401 is rotatably connected with the handle 1;

the first gear 402 is fixedly arranged at the center of the first connecting shaft 401;

two gears 403 and two gears 403 are arranged, the two gears 403 are fixedly connected with the first connecting shaft 401, the two gears 403 are located on the front side and the rear side of the first gear 402, thirty fixing holes 4031 are annularly formed in the outer sides of the two gears 403, and the connecting device 6 comprises:

the second connecting shaft 601 is rotatably connected with the handle 1;

the third gear 602 and the third gear 602 are provided with two gears, the two gears three 602 are fixedly connected with the second connecting shaft 601, the two gears three 602 are meshed with the two gears two 403, and the limiting device 9 comprises:

the mounting seat 901 is fixedly connected with the handle 1 through screws;

a limiting block 902, wherein the limiting block 902 is slidably mounted inside the mounting base 901, and the outer end of the limiting block 902 is of a hemispherical structure;

the spring II 903, the spring II 903 is installed between the limiting block 902 and the handle 1, and twelve groups of limiting devices 9 are arranged, so that the invention is more stable in use, the operation precision is improved, and the success rate of the operation is increased.

As shown in fig. 7, the fixing device 7 includes:

the fixed block 701 is fixedly connected with the second connecting shaft 601, the right end of the fixed block 701 is of a hemispherical structure, and two guide grooves are formed in the fixed block 701;

two moving blocks 702 are arranged, and the two moving blocks 702 are connected to the inside of the fixed block 701 in a sliding manner;

extension spring 703, extension spring 703 are equipped with two altogether, and two extension springs 703 install between two movable blocks 702 and fixed block 701, and cutting device 8 includes:

the connecting rod 801 is connected with the fixing block 701 in a sliding mode;

the cutter head 802, the cutter head 802 is fixedly arranged on the left side of the connecting rod 801, and the cutter head 802 is of an arc structure;

two sliding blocks 803 are arranged, and the two sliding blocks 803 are slidably connected inside the connecting rod 801;

the two springs 804 are arranged, the two springs 804 are arranged between the two sliding blocks 803 and the connecting rod 801, the two sliding blocks 803 are arranged, so that the connecting rod 801 and the fixed block 701 are connected more firmly, shaking during use is avoided, the use stability of the invention is improved, the two moving blocks 702 are arranged, when a doctor presses the two moving blocks 702, the two sliding blocks 803 move downwards, the knife head 802 is convenient to install and take down by the doctor, the knife changing speed is improved, the operation time is reduced, the pain of a patient is reduced, the knife head 802 is of an arc structure, annular bone taking is convenient, the cut part is smoother, and later recovery of the patient is facilitated.

In another embodiment, referring to fig. 12, a soft pad can be fixedly mounted on the outer side of the hollow tube 201, anti-slip lines are arranged on the outer side of the soft pad, and two round holes with the same size as the through holes 203 are formed in the soft pad in a penetrating manner, so that the friction force between the device and the hands of a doctor is increased, the doctor is prevented from slipping during use, and the operation precision is improved.

The specific use mode and function of the embodiment are as follows:

when the invention is used, firstly, a doctor opens the protective cover 3, the protective cover 3 avoids the damage of the cutter head 802 on one hand, the service life of the cutter head 802 is prolonged, on the other hand, the cutter head 802 is prevented from being exposed to outside easily to be infected by bacteria when not in use, the use safety of the invention is improved, then the doctor adjusts the angle of the cutting device 8 by pressing the two trigger heads 5012 according to the cutting requirement, as the driving rod 5021 is rotatably connected with the driving block 5023 through the connecting piece 5022, when the doctor presses the trigger heads 5012, the driving block 5023 drives the gear wheel 402 to rotate, and the elastic piece 503 is arranged between the driving rod 5021 and the handle 1, the trigger heads 5012 move outwards after being pressed, thus being convenient for the doctor to carry out multiple adjustments, and as the twelve groups of limiting devices 9 are arranged inside the handle 1, the driving block 5023 moves inwards when the driving device 502 moves outwards, thus realizing unidirectional angle adjustment, after the adjustment is completed, the hollow tube 201 is rotated, so that the two trigger heads 5012 are positioned in the hollow tube 201, the phenomenon that the two trigger heads 5012 are touched by mistake in the use process is avoided, the normal use of the invention is ensured, the operation precision is improved, when the tool is required to be changed, a doctor presses the two moving blocks 702, the tool bit 802 is convenient to mount and take down by the doctor, the tool changing speed is improved, the operation time is shortened, the pain of a patient is reduced, and a series of working processes are completed.

The invention is not described in detail, but is well known to those skilled in the art.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. An ultrasonic osteotome for annular osteotomy, comprising: comprises a handle (1);

the left end of the handle (1) is provided with a protective cover (3), the protective cover (3) is connected with the handle (1) through a spigot structure, and the interior of the protective cover (3) is of a hollow structure;

the anti-touch device (2) is arranged on the outer side of the handle (1);

the rotating device (4) is installed inside the handle (1), the adjusting devices (5) are installed on the left side and the right side of the rotating device (4), and the installation directions of the two groups of adjusting devices (5) are opposite;

the connecting device (6) is installed inside the handle (1), and a fixing device (7) is installed on the outer side of the connecting device (6);

a cutting device (8), said cutting device (8) being mounted inside the fixing device (7);

the limiting device (9), twelve groups are arranged on the limiting device (9), twelve groups of limiting devices (9) are arranged on the front side and the rear side inside the handle (1), and the twelve groups of limiting devices (9) are annularly and equidistantly distributed.

2. The ultrasonic osteotome defined in claim 1 wherein: the touch prevention device (2) comprises:

the hollow pipe (201), the hollow pipe (201) is rotatably connected with the handle (1);

the number of the balls (202) is six, the six balls (202) are arranged in the hollow pipe (201), and springs are arranged on the inner sides of the six balls (202);

two through holes (203) are arranged in total, and the two through holes (203) penetrate through the hollow pipe (201).

3. The ultrasonic osteotome defined in claim 1 wherein: the rotating device (4) comprises:

the first connecting shaft (401), the first connecting shaft (401) is rotatably connected with the handle (1);

the first gear (402), the first gear (402) is fixedly arranged at the center of the first connecting shaft (401);

two gears (403) are arranged, the two gears (403) are fixedly connected with the connecting shaft I (401), the two gears (403) are located on the front side and the rear side of the gear I (402), and thirty fixing holes (4031) are annularly formed in the outer sides of the two gears (403).

4. The ultrasonic osteotome defined in claim 1 wherein: the adjustment device (5) comprises:

the trigger device (501), the trigger device (501) is installed inside the handle (1);

the driving device (502), the driving device (502) is installed at the inner end of the trigger device (501);

and the elastic piece (503), wherein the elastic piece (503) is arranged between the driving device (502) and the handle (1).

5. The ultrasonic osteotome defined in claim 4 wherein: the triggering device (501) comprises:

the limiting column (5011), the limiting column (5011) is connected with the handle (1) in a sliding mode;

trigger head (5012), trigger head (5012) are installed in the outer end of spacing post (5011), and trigger head (5012) are the cylindrical structure to trigger head (5012) and through-hole (203) concentric setting.

6. The ultrasonic osteotome defined in claim 4 wherein: the drive device (502) comprises:

the driving rod (5021), the driving rod (5021) and the limiting column (5011) are fixedly connected;

the number of the connecting pieces (5022) is two, and the two connecting pieces (5022) are rotatably arranged in the driving rod (5021);

the driving block (5023), the driving block (5023) is installed inside the driving rod (5021), the outer side of the driving block (5023) is flush with the outer side of the driving rod (5021), the driving block (5023) is rotatably connected with the two connectors (5022), and the driving block (5023) is in meshed connection with the first gear (402);

the elastic piece (5024) and the elastic piece (5024) are fixedly arranged at the bottom of the driving block (5023) through screws, and the elastic piece (5024) is tightly attached to the driving rod (5021).

7. The ultrasonic osteotome defined in claim 1 wherein: the connection device (6) comprises:

the second connecting shaft (601), the second connecting shaft (601) is rotatably connected with the handle (1);

and two gears III (602) are arranged, the two gears III (602) are fixedly connected with the connecting shaft II (601), and the two gears III (602) are meshed with the two gears II (403).

8. The ultrasonic osteotome defined in claim 1 wherein: the fixing device (7) comprises:

the fixing block (701), the fixing block (701) is fixedly connected with the second connecting shaft (601), the right end of the fixing block (701) is of a hemispherical structure, and two guide grooves are formed in the fixing block (701);

the number of the moving blocks (702) is two, and the two moving blocks (702) are connected to the inside of the fixed block (701) in a sliding mode;

the two tension springs (703) are arranged, and the two tension springs (703) are arranged between the two moving blocks (702) and the fixed block (701).

9. The ultrasonic osteotome defined in claim 1 wherein: the cutting device (8) comprises:

the connecting rod (801), the connecting rod (801) and the fixed block (701) are connected in a sliding mode;

the cutter head (802), the cutter head (802) is fixedly arranged on the left side of the connecting rod (801), and the cutter head (802) is of an arc-shaped structure;

two sliding blocks (803) are arranged, and the two sliding blocks (803) are connected inside the connecting rod (801) in a sliding manner;

the number of the springs I (804) is two, and the springs I (804) are arranged between the two sliding blocks (803) and the connecting rod (801).

10. The ultrasonic osteotome defined in claim 1 wherein: the limiting device (9) comprises:

the mounting seat (901), the mounting seat (901) is fixedly connected with the handle (1) through a screw;

the limiting block (902), the limiting block (902) is slidably mounted inside the mounting seat (901), and the outer end of the limiting block (902) is of a hemispherical structure;

and the second spring (903), and the second spring (903) is arranged between the limiting block (902) and the handle (1).