Maxillofacial double-jaw positioning cutting assembly

Abstract

The utility model relates to the field of plastic instruments, in particular to a maxillofacial double-jaw positioning cutting assembly which comprises a driving part, and the end of the driving part is connected with a cutter so that the cutter can cut jaw bones in a rotating mode. The protective shell is arranged on the outer side of the cutter, the cutter is hidden in the protective shell, the protective shell is elastically and rotationally connected with the driving component through the torsion spring, a notch is formed in one side of the protective shell, and the protective shell and the driving component rotate, so that the cutter protrudes out of the protective shell from the notch. The rear portion of the protective shell is provided with a blocking part, the blocking part overcomes the elastic force of the torsion spring to abut against the driving component, so that the cutter is hidden in the protective shell, the jaw bone, the pressing driving component and the protective shell are deflected by overcoming the elastic force, the cutter is rotated out of the notch, the rotating cutter cuts the jaw bone at the notch, and therefore the cutter is prevented from being damaged. The deflection amount of the cutter can be accurately controlled through positioning and abutting of the protective shell and the jaw bone, accurate control over the cutting depth and the cutting position is achieved, and the difficulty of accurate cutting is reduced.

Description

Technical Field

[0001] The utility model relates to the field of plastic surgery instruments, in particular to a maxillofacial double-jaw positioning and cutting assembly. Background Art

[0002] Maxillofacial double jaw cutting is a common facial plastic surgery method. By reducing the jaw bone at the jaw angle, it can correct facial deviation, reduce facial width, and make facial lines more beautiful.

[0003] When performing maxillofacial double-jaw bone cutting, the amount of bone cutting and the cutting contour need to be determined according to the specific facial condition. The operator controls the cutting device by hand to cut the jaw bone along the determined contour. However, the cutting device lacks positioning support between the jaw bone and the cutting device, making it difficult to complete precise cutting. Utility Model Content

[0004] The utility model aims to solve the following problems existing in the prior art: the operator controls the cutting device by hand to cut the jaw bone along a certain contour, but the cutting device lacks positioning support between the jaw bone, making it difficult to complete precise cutting.

[0005] In order to solve the problems existing in the prior art, the utility model provides a maxillofacial double-jaw positioning cutting assembly, comprising a driving component, the end of which is connected to a tool, so that the tool cuts the jaw bone in a rotating manner;

[0006] The protective shell is placed outside the tool so that the tool is hidden inside the protective shell. The protective shell is elastically rotated to connect the driving component through a torsion spring. One side of the protective shell has a notch. The protective shell and the driving component rotate so that the tool protrudes from the notch of the protective shell.

[0007] The blocking part is provided at the rear of the protective shell, and the blocking part overcomes the elastic force of the torsion spring to resist the driving component, so that the tool is hidden in the protective shell.

[0008] Preferably, the notch of the protective shell has folded edges on both sides, and the folded edge planes extend.

[0009] Preferably, the middle portion of the folded edge has an arc-shaped recessed portion toward the protective shell.

[0010] Preferably, the driving component includes a shell, a motor and a storage module are arranged inside the shell, the storage module is powered by the first push switch box motor, and a shaft is rotatably arranged at the end of the shell, and the shaft is respectively connected to the output shaft of the motor and the tool.

[0011] Preferably, a second push switch is provided on the surface of the shell, and the second push switch is connected to the power supply line of the motor in series with the first push switch. The second push switch is aligned with the blocking part, and when the blocking part squeezes the second push switch, the power supply line of the motor is cut off.

[0012] Preferably, the ends of the shaft rod are fixed with a baffle and an insert rod in sequence, a through cavity is opened through the axis of the tool, the insert rod is adapted to be inserted into the through cavity, the insert rod and the tool are torsionally limited by a keyway and a sliding key, the end of the insert rod is threadedly connected to a screw, and the axial position of the tool is fixed by the screw and the baffle.

[0013] Preferably, the surface of the shell is provided with rough texture.

[0014] Compared with the related art, the maxillofacial double-jaw positioning cutting assembly provided by the utility model has the following beneficial effects:

[0015] The utility model uses the protective shell jaw to press the driving component and the protective shell to overcome the elastic force and deflect the tool, so that the tool is rotated out from the notch, and the rotating tool cuts the jaw at the notch. Through the positioning interference between the protective shell and the jaw, the deflection amount of the tool can be accurately controlled, the cutting depth and the cutting position can be accurately controlled, and the difficulty of accurate cutting is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is one of the overall structural diagrams of the utility model;

[0017] Figure 2 This is the second schematic diagram of the overall structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the protective shell structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the driving component of the utility model;

[0020] Figure 5 This is a schematic diagram of the tool connecting shaft structure of the utility model.

[0021] Numbers in the figure: 1. driving component; 11. housing; 12. motor; 13. shaft; 14. first push switch; 15. second push switch; 16. battery module; 17. rough texture; 18. plug rod; 19. baffle; 110. screw; 2. tool; 21. through cavity; 3. protective shell; 31. folded edge; 32. arc-shaped recessed portion; 4. blocking portion. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0023] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0024] like Figure 1 , Figure 2 As shown, the maxillofacial double-jaw positioning cutting assembly is composed of three main parts: a driving component 1, a tool 2, and a protective shell 3;

[0025] like Figure 4 As shown, the driving component 1 has a cylindrical housing 11, a motor 12 and a power storage module 16 are installed inside the housing 11, a first push switch 14 is installed on the surface of the housing 11, the motor 12 is electrically connected to the power storage module 16 through the first push switch 14, and a shaft 13 is rotated from the front end of the housing 11 into the housing 11 and connected to the output shaft of the motor 12;

[0026] like Figure 5 As shown, the end of the shaft rod 13 is fixed with a baffle 19 and an insert rod 18 in sequence, a through cavity 21 is formed through the axial portion of the tool 2, the insert rod 18 is adapted to be inserted into the through cavity 21, the surface of the insert rod 18 has a sliding key, the inner wall of the through cavity 21 has a keyway, the insert rod 18 and the tool 2 are torsionally limited by the keyway and the sliding key, the end of the insert rod 18 is threadedly connected with a screw 110, and the axial position of the tool 2 is fixed by the screw 110 and the baffle 19;

[0027] The surface of the housing 11 is provided with rough lines 17, so that the housing 11 is more stable when held in the hand. The first push switch 14 is pressed by a finger to connect the power supply line of the motor 12. The motor 12 drives the shaft 13 to drive the tool 2 to rotate, so as to cut the jaw bone.

[0028] Later, the cutter 2 can be removed from the insert rod 18 by disassembling the screw 110 to replace the cutter 2 with a new one.

[0029] like Figure 1 , Figure 2 , Figure 3 As shown, the cross section of the protective shell 3 is semi-enclosed, and the protective shell 3 is placed outside the tool 2 so that the tool 2 is hidden in the protective shell 3. The protective shell 3 is elastically rotatably connected to the housing 11 through a torsion spring. One side of the protective shell 3 has a notch, and the rear part of the protective shell 3 has a blocking portion 4, which is attached to the surface of the housing 11 and is used to resist the elastic force of the torsion spring so that the tool 2 is hidden in the protective shell 3.

[0030] like Figure 3 As shown, the notch of the protective shell 3 has folded edges 31 on both sides, and the folded edges 31 extend in a plane;

[0031] After the tissue on the surface of the jaw is peeled off, the shell 11 is held and the notch of the protective shell 3 is attached to the surface of the jaw. The protective shell 3 can slide on the surface of the jaw along the determined cutting route through the fitting of the folded edge 31. The protective shell 3 is pressed against the jaw by hand to overcome the elastic force between the driving component 1 and the protective shell 3 and deflect, so that the tool 2 is rotated out of the notch. The rotating tool 2 cuts the jaw at the notch. The deflection amount of the tool 2 can be accurately controlled through the positioning interference between the protective shell 3 and the jaw, thereby achieving accurate control of the cutting depth and cutting position.

[0032] like Figure 3 As shown, the middle part of the folded edge 31 has an arc-shaped recessed portion 32 facing the protective shell 3. When the folded edge 31 contacts the jawbone, the arc-shaped recessed portion 32 fits the arc-shaped edge of the jawbone, so that the protective shell 3 moves more stably during the cutting process.

[0033] like Figure 2 , Figure 4 As shown, a second push switch 15 is provided on the surface of the housing 11, and the second push switch 15 and the first push switch 14 are connected in series to the power supply line of the motor 12, and the second push switch 15 is aligned with the blocking part 4;

[0034] When cutting is carried out, the driving component 1 and the protective shell 3 are deflected, so that the blocking part 4 does not contact the second push switch 15. At this time, the motor 12 is controlled only by the first push switch 14 to drive the tool 2 to work. When not in operation, the tool 2 is hidden in the protective shell 3. At this time, the blocking part 4 squeezes and contacts the second push switch 15, so that the power supply line of the motor 12 is cut off, avoiding accidental contact with the first push switch 14 to cause the tool 2 to rotate, thereby improving the safety of use.

Claims

1. A maxillofacial double jaw positioning cutting assembly, characterized in that: include: A driving component (1), the end of which is connected to a tool (2) so that the tool (2) cuts the jaw bone in a rotating manner; A protective shell (3), the protective shell (3) is placed outside the tool (2), so that the tool (2) is hidden in the protective shell (3), the protective shell (3) is elastically rotatably connected to the driving component (1) through a torsion spring, one side of the protective shell (3) has a notch, and the protective shell (3) and the driving component (1) rotate, so that the tool (2) protrudes from the protective shell (3) through the notch; The blocking part (4) is provided at the rear of the protective shell (3). The blocking part (4) overcomes the elastic force of the torsion spring to resist the driving component (1), so that the tool (2) is hidden in the protective shell (3).

2. The maxillofacial double jaw positioning cutting assembly according to claim 1, characterized in that: The notch of the protective shell (3) is provided with folded edges (31) on both sides, and the folded edges (31) extend in a plane.

3. The maxillofacial double jaw positioning cutting assembly according to claim 2, characterized in that: The middle part of the folded edge (31) has an arc-shaped recessed portion (32) facing the protective shell (3).

4. The maxillofacial double jaw positioning cutting assembly according to claim 1, characterized in that: The driving component (1) comprises a housing (11), a motor (12) and a power storage module (16) are arranged inside the housing (11), the power storage module (16) is powered by the motor (12) via a first push switch (14), and a shaft (13) is rotatably arranged at the end of the housing (11), the shaft (13) being respectively connected to the output shaft of the motor (12) and the tool (2).

5. The maxillofacial double jaw positioning cutting assembly according to claim 4, characterized in that: A second push switch (15) is provided on the surface of the housing (11), and the second push switch (15) and the first push switch (14) are connected in series to a power supply line of the motor (12). The second push switch (15) is aligned with the blocking portion (4), and when the blocking portion (4) presses the second push switch (15), the power supply line of the motor (12) is cut off.

6. The maxillofacial double jaw positioning cutting assembly according to claim 4, characterized in that: The ends of the shaft rod (13) are fixed with a baffle (19) and an insert rod (18) in sequence; a through cavity (21) is provided through the axis of the tool (2); the insert rod (18) is adapted to be inserted into the through cavity (21); a keyway and a sliding key are used to limit torsion between the insert rod (18) and the tool (2); the end of the insert rod (18) is threadedly connected with a screw (110); and the axial position of the tool (2) is fixed by the screw (110) and the baffle (19).

7. The maxillofacial double jaw positioning cutting assembly according to claim 4, characterized in that: The surface of the housing (11) is provided with rough lines (17).

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