Precise osteotomy device for oral and maxillofacial regions

Abstract

The invention discloses a precise osteotomy device for oral and maxillofacial regions, which relates to the field of jaw osteotomy and comprises a bone saw and a connecting ring. A saw blade is arranged at the end of the bone saw, a fixing base is fixedly connected to the bone saw, a water spraying pipe used for spraying normal saline to the saw blade is slidably connected to the fixing base, and the end of the water spraying pipe communicates with a connecting pipe. The bone saw comprises a saw blade and a connecting ring fixed to the end of the bone saw, a connecting column is fixedly connected to the end of the connecting ring, and an automatic spraying structure is arranged in the connecting column and used for automatically spraying normal saline to the saw blade. Normal saline is sprayed to the saw blade, and in the process, the water spraying pipe is driven to move front and back under the action of the moving assembly, so that the saw blade is rapidly and uniformly cooled, and the problem that in the prior art, normal saline needs to be manually injected to the saw blade for cooling the saw blade, and consequently osteotomy is inconvenient to operate is solved.

Description

Technical Field

[0001] The present invention relates to the field of oral and maxillofacial osteotomy, and in particular to a precise jaw osteotomy device. Background Art

[0002] Oral and maxillofacial surgery is a general term for the oral cavity and maxillofacial region. It mainly studies the anatomy, physiological functions, disease prevention and treatment of the oral cavity, jaw, facial soft tissues and related structures. It covers the teeth, periodontal tissues, temporomandibular joints, salivary glands and other parts, and intersects with disciplines such as head and neck surgery and plastic surgery to solve complex problems such as congenital malformations, trauma, tumors, and infections.

[0003] Currently, during oral and maxillofacial surgeries involving the jaw, a bone saw is required to cut and amputate the patient's jaw. For example, during orthognathic surgery, the upper and lower jaws need to be cut and amputated, and then the severed jaws need to be moved to the target position and fixed with titanium plates and titanium nails. However, during the jaw cutting and amputation process, the bone saw blade may heat up rapidly due to prolonged contact with the jaw, leading to serious consequences such as jaw osteonecrosis. To avoid jaw osteonecrosis, the surgeon and assistant need to cooperate in spraying saline to cool the saw blade while sawing the bone during the cutting of the upper and lower jaws. These operations are time-consuming and labor-intensive in clinical practice.

[0004] Therefore, a precise osteotomy device for oral and maxillofacial region is designed. Summary of the Invention

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A precise osteotomy device for the oral and maxillofacial region comprises a bone saw, wherein a saw blade is provided at the end of the bone saw, and a fixing seat is fixedly connected to the bone saw, a water spray pipe for spraying physiological saline onto the saw blade is slidably connected to the fixing seat, and the end of the water spray pipe is connected to a connecting pipe; the device also comprises: a connecting ring fixed to the end of the bone saw, the end of the connecting ring is fixedly connected to a connecting column, an automatic spray structure is provided inside the connecting column, and the automatic spray structure is used to automatically spray physiological saline onto the saw blade; the automatic spray structure comprises an infusion component, the infusion component is installed inside the bone saw, and the infusion component is used to automatically deliver physiological saline to the saw blade, and the infusion component is also provided with a moving component, and the moving component is used to drive the water spray pipe to move back and forth, thereby evenly cooling the saw blade.

[0006] Preferably, the infusion assembly comprises a liquid storage tube fixed inside the connecting column, the end of the liquid storage tube is slidably connected with a liquid inlet head slidably connected with the connecting column, a limiting piece is connected between the liquid inlet head and the connecting column, a rubber sealing gasket is arranged inside the liquid inlet head, the other end of the liquid inlet head is communicated with a liquid extraction head, a plurality of groups of through holes are formed in the liquid extraction head, the end of the liquid extraction head is communicated with a liquid extraction tube, a sliding piece for driving the liquid inlet head to slide is further arranged inside the liquid storage tube, and the end of the liquid extraction tube is slidably connected with a communicating piece communicated with the connecting tube.

[0007] Preferably, the limiting piece comprises a first spring fixed inside the connecting column, a cavity for placing the first spring is formed in the connecting column, and the end of the first spring is fixedly connected with a sliding column slidably connected with the connecting column, the end of the sliding column is rotatably connected with a ball rotatably connected with the liquid inlet head, and two groups of rolling grooves are formed in the liquid inlet head and matched with the balls.

[0008] Preferably, the communicating piece comprises a communicating tube extending into the liquid storage tube, the communicating tube is sleeved on the outer side of the liquid extraction tube, the end of the communicating tube is connected with a pump body, the pump body is communicated with an infusion tube, the end of the infusion tube is communicated with an operation tube, the end of the operation tube is communicated with a sleeve tube, a sliding tube slidably connected with the bone saw is slidably connected in the sleeve tube, a moving assembly is arranged inside the operation tube and extends into the sliding tube, the sliding tube is communicated with the connecting tube, a sliding block slidably connected with the bone saw is fixedly connected on the sliding tube, and a sliding groove matched with the sliding block is formed in the bone saw.

[0009] Preferably, the sliding piece comprises a second spring fixed inside the liquid storage tube, the end of the second spring is fixedly connected with a pressing piece sleeved on the outer side of the communicating tube, and a sealing sleeve sleeved on the outer side of the communicating tube is fixedly connected on one side of the pressing piece.

[0010] Preferably, the moving assembly comprises a fixed piece fixed in the sliding tube, a plurality of groups of liquid outlet holes are formed in the fixed piece, and a threaded block is fixedly connected on the fixed piece, a reciprocating screw rod is threadedly connected on the threaded block, a driving piece arranged inside the operation tube is connected with the reciprocating screw rod.

[0011] Preferably, the driving piece comprises a rotating block arranged inside the operation tube, a plurality of groups of blades rotatably connected with the operation tube are fixedly connected on the outer side of the rotating block, and a connecting shaft fixedly connected with the reciprocating screw rod is fixedly connected on the end of the rotating block.

[0012] Preferably, a sealing cover is installed at the end of the connecting column, and the position of the sealing cover is arranged corresponding to the position of the liquid inlet head.

[0013] Preferably, the second springs are provided in multiple groups and are arranged circumferentially inside the liquid storage tube.

[0014] Preferably, the end of the water spray pipe is arranged at an angle, and the inclination direction is toward the saw blade.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides an oral and maxillofacial precision osteotomy device, which is equipped with an automatic spray structure. During the process of osteotomy of a patient's jaw by a bone saw, physiological saline is automatically transported to a water spray pipe through an infusion component in the automatic spray structure, and the physiological saline is sprayed onto the saw blade through the water spray pipe. In this process, the moving component is started by the cooperation of the infusion component, and the connecting pipe drives the water spray pipe to move back and forth through the action of the moving component, so that the saw blade is cooled quickly and evenly, thereby solving the problem in the prior art that the saw blade needs to be cooled manually and physiological saline needs to be injected into the saw blade, which makes osteotomy inconvenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 3 For the present invention Figure 2 Schematic diagram of the structure of the middle A area; Figure 4 This is a schematic diagram of the automatic spray structure of the present invention; Figure 5 Schematic diagram of the internal structure of the liquid storage tube of the present invention; Figure 6 For the present invention Figure 5 Schematic diagram of the structure of the middle B area; Figure 7 Schematic diagram of the structure of the infusion assembly of the present invention; Figure 8 It is a schematic diagram of the structure of the mobile component of the present invention; Figure 9 For the present invention Figure 8 Schematic diagram of the structure of the middle C area.

[0018] Explanation of the figure numbers: 1. Bone saw; 2. Saw blade; 3. Connecting pipe; 4. Water spray pipe; 5. Fixing seat; 6. Connecting ring; 7. Connecting column; 8. Automatic spray structure; 9. Infusion assembly; 10. Moving assembly; 11. Liquid storage tube; 12. Liquid inlet head; 13. Rubber sealing gasket; 14. Liquid extraction head; 15. Through hole; 16. Liquid extraction tube; 17. Limiting member; 18. Sliding member; 19. Second spring; 20. Extrusion plate; 21. Sealing sleeve; 22. First spring 23. Cavity; 24. Sliding column; 25. Ball; 26. Rolling groove; 27. Connecting pipe; 28. Pump body; 29. ​​Infusion tube; 30. Operating tube; 31. Casing; 32. Sliding pipe; 33. Sliding block; 34. Sliding groove; 35. Connecting piece; 36. Fixed piece; 37. Liquid outlet; 38. Threaded block; 39. Driving piece; 40. Rotating block; 41. Blade; 42. Connecting shaft; 43. Reciprocating screw; 44. Sealing cover; 45. Indicator light. DETAILED DESCRIPTION

[0019] The present invention will be described in further detail below with reference to the accompanying drawings.

[0020] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are for illustrative purposes only, and those skilled in the art will readily appreciate other obvious variations. The basic principles of the present invention defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0021] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate directions or positions are based on the directions or positional relationships shown in the accompanying drawings, which are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the above terms should not be understood as limiting the present invention.

[0022] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the elements may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0023] Example See also Figure 1 - Figure 9A precise osteotomy device for the oral and maxillofacial region comprises a bone saw 1, a saw blade 2 is provided at the end of the bone saw 1, and a fixing seat 5 is fixedly connected to the bone saw 1, a water spray pipe 4 for spraying physiological saline to the saw blade 2 is slidably connected to the fixing seat 5, and the end of the water spray pipe 4 is connected to a connecting pipe 3; it also includes: a connecting ring 6 fixed to the end of the bone saw 1, a connecting column 7 is fixedly connected to the end of the connecting ring 6, an automatic spray structure 8 is provided inside the connecting column 7, and the automatic spray structure 8 is used to automatically spray physiological saline to the saw blade 2; the automatic spray structure 8 includes an infusion component 9, the infusion component 9 is installed inside the bone saw 1, and the infusion component 9 is used to automatically deliver physiological saline to the saw blade 2, and the infusion component 9 is also provided with a moving component 10, which is used to drive the water spray pipe 4 to move back and forth, thereby evenly cooling the saw blade 2.

[0024] The end of the water spray pipe 4 is tilted, and the tilt direction is toward the saw blade 2 . The tilted setting of the water spray pipe 4 facilitates the spraying of physiological saline toward the saw blade 2 , thereby accurately cooling the saw blade 2 .

[0025] In addition, during the osteotomy process, physiological saline is transported into the connecting tube 3 through the action of the infusion component 9, and then the physiological saline enters the water spray pipe 4 through the action of the connecting tube 3, and then the saw blade 2 is sprayed with physiological saline through the action of the water spray pipe 4 to cool it down.

[0026] It should be noted that, during the process of the infusion component 9 delivering physiological saline, the moving component 10 will be operated accordingly. The connecting tube 3 will drive the water spray pipe 4 to slide through the action of the moving component 10, and the sliding of the water spray pipe 4 will improve the cooling efficiency of the saw blade 2.

[0027] In the embodiment of the present invention, please refer to Figure 4 - Figure 7 The infusion assembly 9 shown in the figure includes a liquid storage tube 11 fixed inside the connecting column 7, and the end of the liquid storage tube 11 is slidably connected to a liquid inlet head 12 slidably connected to the connecting column 7. A limiting member 17 is connected between the liquid inlet head 12 and the connecting column 7, and a rubber sealing gasket 13 is provided inside the liquid inlet head 12. The other end of the liquid inlet head 12 is connected to a liquid extraction head 14, and a plurality of groups of through holes 15 are provided on the liquid extraction head 14. The end of the liquid extraction head 14 is connected to a liquid extraction tube 16. A sliding member 18 for driving the liquid inlet head 12 to slide is also installed inside the liquid storage tube 11, and the end of the liquid extraction tube 16 is slidably connected to a connecting member 35 connected to the connecting tube 3.

[0028] Among them, a sealing cover 44 is installed at the end of the connecting column 7. The position of the sealing cover 44 is set corresponding to the position of the liquid inlet head 12. The sealing cover 44 can protect the liquid inlet head 12 to prevent the physiological saline from being contaminated.

[0029] In the embodiment of the present invention, please refer toFigure 5 and Figure 6 The limit member 17 shown in the figure includes a first spring 22 fixed inside the connecting column 7, a cavity 23 for placing the first spring 22 is opened on the connecting column 7, and the end of the first spring 22 is fixedly connected to a sliding column 24 slidably connected to the connecting column 7, and the end of the sliding column 24 is rotatably connected to a ball 25 movably connected to the liquid inlet head 12, and two sets of rolling grooves 26 are opened on the liquid inlet head 12, and the rolling grooves 26 are adapted to the ball 25.

[0030] Among them, the second springs 19 are provided in multiple groups and are arranged in a circle inside the liquid storage tube 11, so that the extrusion plate 20 can slide evenly inside the liquid storage tube 11, and the second springs 19 are provided in multiple groups, so that the extrusion plate 20 can have sufficient elastic force to reset.

[0031] In the embodiment of the present invention, please refer to Figure 5 - Figure 7 The connecting piece 35 shown in the figure includes a connecting tube 27 extending to the inside of the liquid storage tube 11, the connecting tube 27 is sleeved on the outer side of the liquid extraction tube 16, and the end of the connecting tube 27 is connected to the pump body 28, the pump body 28 is connected to the infusion tube 29, the end of the infusion tube 29 is connected to the operating tube 30, the end of the operating tube 30 is connected to the sleeve 31, and the sleeve 31 is slidably connected with a sliding tube 32 that is slidably connected to the bone saw 1. The moving assembly 10 is installed in the operating tube 30 and extends into the sliding tube 32. The sliding tube 32 is connected to the connecting tube 3, and a sliding block 33 that is slidably connected to the bone saw 1 is fixedly connected to the sliding tube 32. The bone saw 1 is provided with a sliding groove 34 that is adapted to the sliding block 33.

[0032] In the embodiment of the present invention, please refer to Figure 4 and Figure 5 The sliding member 18 shown in the figure includes a second spring 19 fixed inside the liquid storage tube 11, and the end of the second spring 19 is fixedly connected to an extrusion piece 20 sleeved on the outer side of the connecting tube 27, and one side of the extrusion piece 20 is fixedly connected to a sealing sleeve 21 sleeved on the outer side of the connecting tube 27.

[0033] In the embodiment of the present invention, please refer to Figure 8 and Figure 9 The moving assembly 10 shown in the figure includes a fixed plate 36 fixed in the sliding tube 32, and a plurality of liquid outlet holes 37 are opened on the fixed plate 36. A threaded block 38 is fixedly connected to the fixed plate 36, and a reciprocating screw 43 is threadedly connected to the threaded block 38. The end of the reciprocating screw 43 is connected to a driving member 39 installed inside the operating tube 30, and the driving member 39 is connected to the reciprocating screw 43.

[0034] In the embodiment of the present invention, please refer to Figure 8 and Figure 9The driving member 39 shown in the figure includes a rotating block 40 installed inside the operating tube 30. The outer side of the rotating block 40 is fixedly connected to multiple groups of blades 41 that are rotatably connected to the operating tube 30, and the end of the rotating block 40 is fixedly connected to a connecting shaft 42 that is fixedly connected to a reciprocating screw rod 43.

[0035] During the implementation process, during the osteotomy process, the pump body 28 is started, and then the pump body 28 will suck the physiological saline inside the liquid storage tube 11 into the infusion tube 29 through the action of the connecting tube 27, the liquid extraction tube 16, the liquid extraction head 14 and the through hole 15, and then the physiological saline is transported to the inside of the operating tube 30 through the action of the infusion tube 29, and then the physiological saline is transported to the inside of the sleeve 31 through the operating tube 30, and then transported to the inside of the sliding tube 32 through the sleeve 31, and then the physiological saline is transported to the connecting tube 3 and the water spray pipe 4 through the sliding tube 32, and the physiological saline is automatically sprayed onto the saw blade 2 through the action of the water spray pipe 4 to cool the saw blade 2 to prevent the saw blade 2 from being overheated and causing bone necrosis; Furthermore, after the physiological saline is delivered to the interior of the operating tube 30 through the pump body 28, the impact of the physiological saline causes the blade 41 to drive the rotating block 40 to rotate, and the rotation of the rotating block 40 causes the connecting shaft 42 to rotate, and the rotation of the connecting shaft 42 causes the reciprocating screw 43 to rotate, and the rotation of the reciprocating screw 43 causes the threaded block 38 to move back and forth, and the action of the threaded block 38 drives the fixing piece 36 to slide back and forth, and the action of the fixing piece 36 causes the sliding tube 32 to slide back and forth, and the sliding of the sliding tube 32 causes the connecting tube 3 to drive the water spraying pipe 4 to slide back and forth, thereby uniformly spraying the physiological saline onto the saw blade 2, so that the saw blade 2 is evenly and quickly cooled; As the amount of saline solution in the liquid storage tube 11 gradually decreases, the second spring 19 causes the squeezing sheet 20 to gradually move upward. After the squeezing sheet 20 contacts the liquid extraction head 14, the continued movement of the squeezing sheet 20 squeezes the liquid extraction head 14, causing the liquid extraction head 14 to drive the liquid inlet head 12 to slide. The sliding of the liquid inlet head 12 pushes the sealing cover 44 open, exposing the liquid inlet head 12 to the outside. This facilitates the replenishment of saline solution into the liquid storage tube 11. It should be noted that during this process, after the sealing cover 44 is opened, the indicator light 45 starts flashing, thereby reminding the operator that the saline solution in the liquid storage tube 11 is about to be used up, so that the operator can replenish the saline solution in time. Among them, during the sliding of the liquid inlet head 12, the ball 25 will be retracted to the inside of the connecting column 7 through the action of the liquid inlet head 12. After the liquid inlet head 12 slides to the end position, the ball 25 corresponds to another set of rolling grooves 26 through the action of the first spring 22. At this time, the liquid inlet head 12 is limited to facilitate the replenishment of physiological saline. During the replenishment process, the physiological saline will squeeze the extrusion sheet 20, causing the extrusion sheet 20 to move, thereby causing the second spring 19 to gradually compress. After the replenishment is completed, the liquid inlet head 12 is pressed to reset. At this time, the ball 25 corresponds to the previous rolling groove 26 to reset the liquid inlet head 12.

[0036] It should be noted that in the process of replenishing normal saline, normal saline can be directly added to the liquid storage tube 11 through a syringe, the needle is directly inserted into the liquid inlet head 12, and then normal saline can be directly added to the liquid storage tube 11 through a syringe to improve efficiency. The rubber sealing gasket 13 can also be removed for easy replacement.

[0037] Those skilled in the art will appreciate that the embodiments of the present invention described above and shown in the accompanying drawings are intended only as examples and are not intended to limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and illustrated in the embodiments. Any variations or modifications may be made to the embodiments of the present invention without departing from the principles described.

Claims

1. A precise osteotomy device for the oral and maxillofacial region, characterized by: A bone saw (1), wherein a saw blade (2) is provided at the end of the bone saw (1), and a fixing seat (5) is fixedly connected to the bone saw (1), a water spray pipe (4) for spraying physiological saline toward the saw blade (2) is slidably connected to the fixing seat (5), and the end of the water spray pipe (4) is connected to a connecting pipe (3); Also includes: A connecting ring (6) fixed to the end of the bone saw (1), the end of the connecting ring (6) being fixedly connected to a connecting column (7), an automatic spraying structure (8) being provided inside the connecting column (7), the automatic spraying structure (8) being used to automatically spray physiological saline on the saw blade (2); The automatic spraying structure (8) includes an infusion component (9), which is installed inside the bone saw (1) and is used to automatically deliver physiological saline to the saw blade (2). The infusion component (9) is also equipped with a moving component (10), which is used to drive the water spray pipe (4) to move forward and backward, thereby evenly cooling the saw blade (2).

2. The oral and maxillofacial precision osteotomy device according to claim 1, characterized in that: The infusion assembly (9) includes a liquid storage tube (11) fixed inside the connecting column (7), the end of the liquid storage tube (11) is slidably connected to a liquid inlet head (12) slidably connected to the connecting column (7), a limiting member (17) is connected between the liquid inlet head (12) and the connecting column (7), and a rubber sealing gasket (13) is provided inside the liquid inlet head (12), the other end of the liquid inlet head (12) is connected to a liquid extraction head (14), a plurality of groups of through holes (15) are provided on the liquid extraction head (14), and the end of the liquid extraction head (14) is connected to a liquid extraction tube (16), a sliding member (18) for driving the liquid inlet head (12) to slide is also installed inside the liquid storage tube (11), and the end of the liquid extraction tube (16) is slidably connected to a connecting member (35) connected to the connecting tube (3).

3. The oral and maxillofacial precision osteotomy device according to claim 2, characterized in that: The limiting member (17) includes a first spring (22) fixed inside the connecting column (7), a cavity (23) for accommodating the first spring (22) is provided on the connecting column (7), and the end of the first spring (22) is fixedly connected to a sliding column (24) slidably connected to the connecting column (7), the end of the sliding column (24) is rotatably connected to a ball (25) movably connected to the liquid inlet head (12), and two groups of rolling grooves (26) are provided on the liquid inlet head (12), and the rolling grooves (26) are adapted to the ball (25).

4. The oral and maxillofacial precision osteotomy device according to claim 3, characterized in that: The connecting member (35) includes a connecting tube (27) extending to the inside of the liquid storage tube (11), the connecting tube (27) is sleeved on the outer side of the liquid extraction tube (16), and the end of the connecting tube (27) is connected to a pump body (28), the pump body (28) is connected to an infusion tube (29), the end of the infusion tube (29) is connected to an operating tube (30), the end of the operating tube (30) is connected to a sleeve (31), a sliding tube (32) slidably connected to the bone saw (1) is slidably connected in the sleeve (31), the moving assembly (10) is installed in the inside of the operating tube (30) and extends into the sliding tube (32), the sliding tube (32) is connected to the connecting tube (3), and a sliding block (33) slidably connected to the bone saw (1) is fixedly connected to the sliding tube (32), and a sliding groove (34) adapted to the sliding block (33) is provided on the bone saw (1).

5. The oral and maxillofacial precision osteotomy device according to claim 4, characterized in that: The sliding member (18) includes a second spring (19) fixed inside the liquid storage tube (11), an end portion of the second spring (19) is fixedly connected to an extrusion sheet (20) sleeved on the outer side of the connecting tube (27), and one side of the extrusion sheet (20) is fixedly connected to a sealing sleeve (21) sleeved on the outer side of the connecting tube (27).

6. The oral and maxillofacial precision osteotomy device according to claim 5, characterized in that: The moving assembly (10) includes a fixed plate (36) fixed in the sliding tube (32), a plurality of liquid outlet holes (37) are provided on the fixed plate (36), and a threaded block (38) is fixedly connected to the fixed plate (36), a reciprocating screw (43) is threadedly connected to the threaded block (38), and the end of the reciprocating screw (43) is connected to a driving member (39) installed in the operating tube (30), and the driving member (39) is connected to the reciprocating screw (43).

7. The oral and maxillofacial precision osteotomy device according to claim 6, characterized in that: The driving member (39) includes a rotating block (40) installed inside the operating tube (30), the outer side surface of the rotating block (40) is fixedly connected to a plurality of blades (41) rotatably connected to the operating tube (30), and the end of the rotating block (40) is fixedly connected to a connecting shaft (42) fixedly connected to the reciprocating screw (43).

8. The oral and maxillofacial precision osteotomy device according to claim 7, characterized in that: A sealing cover (44) is installed at the end of the connecting column (7), and the position of the sealing cover (44) is arranged corresponding to the position of the liquid inlet head (12).

9. The oral and maxillofacial precision osteotomy device according to claim 8, characterized in that: The second springs (19) are provided in multiple groups and are arranged in a circular pattern inside the liquid storage tube (11).

10. The oral and maxillofacial precision osteotomy device according to claim 9, characterized in that: The end of the water spray pipe (4) is arranged at an angle, and the inclination direction is toward the saw blade (2).

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