Medical power swing knife

Abstract

The utility model discloses a medical power swing knife which comprises a power mobile phone connecting shell (1), a power mobile phone connecting assembly is arranged in the power mobile phone connecting shell (1), one end of the power mobile phone connecting shell (1) is connected with one end of an electric saw rod assembly, a connecting rod (2) is installed in the electric saw rod assembly in a rotating mode, and the connecting rod (2) is connected with the power mobile phone connecting shell (1). The other end of the electric saw rod assembly is connected with the swing cutter head assembly, the power mobile phone connecting assembly is connected with one end of the connecting rod (2), the other end of the connecting rod (2) is provided with a swing cutter driving assembly, and the swing cutter driving assembly is connected with a blade (3) on the swing cutter head assembly. The cutting device has the advantages of being high in cutting efficiency, the swing range is fixed in the working process, and redundant damage cannot be caused.

Description

TECHNICAL FIELD

[0001] The utility model relates to a swing knife, especially a medical power swing knife. BACKGROUND

[0002] In surgery, it is usually necessary to cut bone, but in traditional surgery, the doctor needs to operate manually, which consumes a lot of time and physical strength. Moreover, the traditional cutting of bone cannot limit the operating range, which will result in a larger wound and a longer recovery time. In addition, during manual operation, it is impossible to ensure that the cutting is in a stable state throughout the process. Therefore, manual operation is likely to cause damage to the surrounding tissue.

[0003] The knife in the prior art also has the problem of difficulty in disinfection. A lot of time is spent on disinfection after each use, and if disinfection is not thorough, cross-infection will occur. UTILITY MODEL CONTENT

[0004] The utility model aims to provide a medical power swing knife to solve the technical problems in the prior art, which has the advantages of high cutting efficiency and fixed swing range during work, and will not cause unnecessary damage.

[0005] The utility model provides a medical power swing knife, including power mobile phone connecting shell, power mobile phone connecting shell is equipped with power mobile phone connecting assembly in, one end of power mobile phone connecting shell is connected with one end of electric saw pole assembly, the rotatable installation of connecting rod is equipped in electric saw pole assembly, the other end of electric saw pole assembly is connected with swing knife head assembly, power mobile phone connecting assembly is connected with one end of connecting rod, the other end of connecting rod is installed with swing knife drive assembly, swing knife drive assembly is connected with blade on swing knife head assembly.

[0006] In the foregoing medical power swing knife, preferably, the power mobile phone connecting shell is a cylindrical structure, and the outer wall of the power mobile phone connecting shell has an anti-slip convex ring.

[0007] In the foregoing medical power swing knife, preferably, the electric saw pole assembly includes an electric saw outer sleeve, an electric saw inner sleeve, and a connecting head. The electric saw outer sleeve is sleeved on the electric saw inner sleeve, and the two are fixedly connected. One end of the connecting head is fixedly connected with one end of the electric saw outer sleeve. The other end of the connecting head is inserted into and fixedly connected with the power mobile phone connecting shell.

[0008] Preferably, a plane is formed on the outer wall of the inner sleeve of the electric saw, one end of the plane is a certain distance from one end of the inner sleeve of the electric saw, the other end of the plane extends to the other end of the inner sleeve of the electric saw, a cavity is formed between the plane and the inner wall of the outer sleeve of the electric saw, the cavity is used for the circulation of liquid, and a second liquid inlet hole is formed on the wall of the outer sleeve of the electric saw and communicates with the cavity.

[0009] Preferably, a liquid guide hole is formed in the connecting head, a first liquid inlet hole is formed on the side wall of the power mobile phone connecting shell, one end of the first liquid inlet hole communicates with one end of the liquid guide hole, and the other end of the liquid guide hole communicates with the second liquid inlet hole.

[0010] Preferably, the power mobile phone connecting assembly comprises a mounting cylinder and a steering shaft, the mounting cylinder is composed of a first mounting cylinder and a second mounting cylinder, the inner diameters of the first mounting cylinder and the second mounting cylinder are equal, the outer diameter of the first mounting cylinder is equal to the inner diameter of the power mobile phone connecting shell, the first mounting cylinder is fixedly connected with the power mobile phone connecting shell, the outer diameter of the second mounting cylinder is smaller than that of the first mounting cylinder, the steering shaft is rotatably mounted in the mounting cylinder, a character-shaped connecting boss is formed on one end of the steering shaft away from the connecting rod, and the other end of the steering shaft is inserted into and fixedly connected with one end of the connecting rod.

[0011] Preferably, the swing saw driving assembly comprises a cam connecting shaft and a cam, one end of the cam connecting shaft is fixedly connected with the connecting rod, the cam is fixedly arranged on the other end of the cam connecting shaft, and a protruding part is formed on the end face of the cam.

[0012] Preferably, the swing saw head assembly comprises a blade mounting shell and the blade, one end of the blade mounting shell is threadedly connected with the outer sleeve of the electric saw, the other end of the blade mounting shell is formed with a blade mounting groove, and one end of the blade is mounted in the blade mounting groove and connected with the blade mounting shell through a positioning shaft.

[0013] Preferably, one end of the blade inside the blade mounting shell is formed with a "U"-shaped connecting part, and the end face of the other end of the blade outside the blade mounting shell is a circular arc face, and the circular arc face is uniformly provided with cutting teeth.

[0014] Compared to the prior art, the present invention includes a power handpiece connection housing, a power handpiece connection assembly disposed within the power handpiece connection housing, one end of the power handpiece connection housing being connected to one end of a chainsaw bar assembly, a connecting rod being rotatably mounted within the chainsaw bar assembly, the other end of the chainsaw bar assembly being connected to an oscillating blade head assembly, the power handpiece connection assembly being connected to one end of the connecting rod, the other end of which being mounted with an oscillating blade drive assembly, which is connected to a blade on the oscillating blade head assembly. The medical power oscillating blade provided by the present invention can be connected to a power handpiece in the prior art. The power handpiece drives the power handpiece connection assembly to rotate, power is transmitted via the connecting rod, and the oscillating blade drive assembly drives the blade to oscillate, thereby cutting bone. Because the swing amplitude of the blade is limited, the present invention does not cause unnecessary damage.

[0015] In addition, the oscillating blade head assembly of the present invention is detachable, so it can be directly discarded after use and replaced with a new oscillating blade head assembly, which solves the problem of cross infection caused by incomplete disinfection in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an axonometric drawing of the present utility model;

[0017] Figure 2 It is an exploded view of the utility model;

[0018] Figure 3 This is a schematic diagram of a half-section structure of the present utility model;

[0019] Figure 4 Schematic diagram of the half-section structure of the connector;

[0020] Figure 5 It is an axonometric view of the outer sleeve of a chainsaw;

[0021] Figure 6 It is an axonometric view of the cam;

[0022] Figure 7 is a side view of the cam;

[0023] Figure 8 It is a partial structural diagram of the utility model.

[0024] Explanation of the accompanying drawings: power mobile phone connecting shell 1, connecting rod 2, blade 3, first bearing 4, electric saw outer sleeve 5, electric saw inner sleeve 6, connecting head 7, plane 8, second liquid inlet hole 9, liquid guide hole 10, first liquid inlet hole 11, mounting cylinder 12, steering shaft 13, I-shaped connecting boss 14, cam connecting shaft 15, cam 16, raised portion 17, blade mounting shell 18, blade mounting groove 19, positioning shaft 20, "U"-shaped connecting portion 21, cutting teeth 22, second bearing 23, and limiting ring 24. DETAILED DESCRIPTION

[0025] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0026] Example 1 of the present utility model: Figures 1-8 As shown, a medical power oscillating knife includes a power mobile phone connecting shell 1, a power mobile phone connecting assembly is provided in the power mobile phone connecting shell 1, one end of the power mobile phone connecting shell 1 is connected to one end of the electric saw rod assembly, a connecting rod 2 is rotatably installed in the electric saw rod assembly, the other end of the electric saw rod assembly is connected to the oscillating knife head assembly, the power mobile phone connecting assembly is connected to one end of the connecting rod 2, the other end of the connecting rod 2 is equipped with an oscillating knife driving assembly, and the oscillating knife driving assembly is connected to the blade 3 on the oscillating knife head assembly.

[0027] The present invention is used in conjunction with a power mobile phone in the prior art. Both the power mobile phone and the power system host are prior art, and their structures are not described in detail in the present invention. The power mobile phone connection shell 1 is a cylindrical structure. The outer wall of the power mobile phone connection shell 1 is provided with an anti-skid convex ring, which can play an anti-skid role. A limit ring 24 is also provided on the outer wall of the end of the power mobile phone connection shell 1. When in use, the power mobile phone connection shell 1 is inserted into the power mobile phone. The power mobile phone has a limit block. The limit block cooperates with the limit ring 24 to prevent the power mobile phone connection shell 1 from being separated from the power mobile phone. After the connection is completed, the drive shaft of the power mobile phone is connected to the power mobile phone connection assembly in the power mobile phone connection shell 1. The power system host provides power to enable the power mobile phone to drive the power mobile phone connection assembly to rotate. The power mobile phone connection assembly drives the swing knife drive assembly to rotate through the connecting rod 2, and the swing knife drive assembly drives the blade 3 to swing back and forth.

[0028] In order to better solve the disinfection problem, the utility model designs the swinging cutter head assembly to be detachably connected to the electric saw rod assembly. After each use, it is only necessary to replace a new swinging cutter head assembly. The swinging cutter head assembly is a disposable consumable. In this way, each replacement of a new swinging cutter head assembly effectively solves the cross-infection problem caused by incomplete disinfection. Replacing only the swinging cutter head assembly can effectively reduce the cost of use.

[0029] In a specific embodiment, the chainsaw rod assembly includes a chainsaw outer sleeve 5, a chainsaw inner sleeve 6 and a connector 7. The chainsaw outer sleeve 5 is sleeved on the chainsaw inner sleeve 6, and the two are fixedly connected. One end of the connector 7 is fixedly connected to one end of the chainsaw outer sleeve 5, and the other end of the connector 7 is plugged into and fixedly connected to the power mobile phone connection shell 1.

[0030] Specifically, the connecting head 7 is a frustum structure, and the diameter of one end of the connecting head 7 connected with the power mobile phone connecting shell 1 is larger than the diameter of the other end.

[0031] The power mobile phone connecting assembly comprises a mounting cylinder 12 and a steering shaft 13, the mounting cylinder 12 is composed of a first mounting cylinder and a second mounting cylinder, the first mounting cylinder and the second mounting cylinder have the same inner diameter and are coaxial, the outer diameter of the first mounting cylinder is equal to the inner diameter of the power mobile phone connecting shell 1, the first mounting cylinder is fixedly connected with the power mobile phone connecting shell 1, the outer diameter of the second mounting cylinder is smaller than the outer diameter of the first mounting cylinder, the steering shaft 13 is rotatably mounted in the mounting cylinder 12, a one-letter-shaped connecting boss 14 is formed at one end of the steering shaft 13 away from the connecting rod 2, and the other end of the steering shaft 13 is inserted into and fixedly connected with one end of the connecting rod 2.

[0032] The end of the driving shaft in the power mobile phone is in a groove structure, when the utility model is connected with the power mobile phone, the one-letter-shaped connecting boss 14 at the end of the steering shaft 13 is inserted into the groove at the end of the driving shaft of the power mobile phone, and effective connection is realized.

[0033] The inner diameter of the mounting cylinder 12 is slightly larger than the maximum outer diameter of the steering shaft 13, that is, the inner wall of the mounting cylinder 12 is not contacted when the steering shaft 13 rotates, so that the friction is reduced. In the embodiment, the first bearing 4 is fixedly installed at one end of the electric saw inner sleeve 6, the second bearing 23 is fixedly installed at the other end of the electric saw inner sleeve 6, one end of the connecting rod 2 is inserted into the second bearing 23 and is inserted into and fixedly connected with the steering shaft 13, and the steering shaft 13 is kept coaxial with the mounting cylinder 12 under the action of the second bearing 23. The first bearing 4 and the second bearing 23 are arranged, so that the resistance is smaller when the utility model works, and the power transmission is more smooth.

[0034] Further, the swing blade driving assembly comprises a cam connecting shaft 15 and a cam 16, the cam connecting shaft 15 is in interference fit with the inner annular surface of the first bearing 4, one end of the cam connecting shaft 15 is inserted into the first bearing 4 and is fixedly connected with the connecting rod 2, and the cam 16 is fixedly arranged at the other end of the cam connecting shaft 15, and the end surface of the cam 16 is formed with a protruding part 17.

[0035] The cam connecting shaft 15 can rotate smoothly and keep coaxial with the electric saw inner sleeve 6 under the action of the first bearing 4, and the protruding part 17 at the end of the cam 16 is used for driving the blade 3 to swing.

[0036] Further, the swing blade head assembly comprises a blade mounting shell 18 and the blade 3, one end of the blade mounting shell 18 is threadedly connected with the electric saw outer sleeve 5, the other end of the blade mounting shell 18 is formed with a blade mounting groove 19, and one end of the blade 3 is mounted in the blade mounting groove 19 and is connected with the blade mounting shell 18 through a positioning shaft 20.

[0037] The width of the blade mounting groove 19 is equal to the thickness of the blade 3, so that the blade 3 does not move in the axial direction of the positioning shaft 20 during operation, thereby ensuring the stability of the blade 3 and preventing damage to the blade 3. During operation, the blade 3 can only swing back and forth with a small amplitude around the positioning shaft 20 as the axis, and the reciprocating swinging can achieve bone cutting.

[0038] A U-shaped connecting portion 21 is formed on one end of the blade 3 located inside the blade mounting housing 18 , and an end surface of the blade 3 located outside the blade mounting housing 18 is an arc surface with cutting teeth 22 evenly distributed on the arc surface.

[0039] The working principle of the present utility model is as follows: when in use, the power mobile phone connection housing 1 is installed on the power mobile phone. After installation, the straight connecting boss 14 at the end of the steering shaft 13 is plugged into the groove at the end of the driving shaft of the power mobile phone. The power system host is turned on. The driving shaft of the power mobile phone rotates to drive the steering shaft 13 to rotate. The steering shaft 13 drives the connecting rod 2 to rotate. The connecting rod 2 drives the cam connecting shaft 15 and the cam 16 to rotate. When the cam 16 rotates, the raised portion 17 at the end thereof pushes the "U"-shaped connecting portion 21 at the end of the blade 3. Please refer to Figure 8 When the cam 16 rotates one circle, the protrusion 17 pushes the upper and lower parts of the "U"-shaped connecting part 21 once respectively, and the blade 3 swings back and forth around the positioning axis 20 once. As the cam 16 continues to rotate, the blade 3 continues to swing back and forth. The swing amplitude of the blade 3 is related to the size of the cam 16, the protrusion 17 and the "U"-shaped connecting part 21. By changing their sizes, the swing amplitude of the blade 3 can be changed. However, after a model of medical power swing knife is produced, the swing amplitude of the blade 3 is fixed during use and will not change.

[0040] Example 2 of the present utility model: Figures 1-7 As shown, based on embodiment 1, this embodiment adds a cooling function.

[0041] In this embodiment, a plane 8 is processed on the outer tube wall of the electric saw inner sleeve 6. One end of the plane 8 is at a certain distance from one end of the electric saw inner sleeve 6. The distance can be set according to needs. For example, in this embodiment, the distance is 4.5 mm. The other end of the plane 8 extends to the other end of the electric saw inner sleeve 6. After the electric saw inner sleeve 6 is assembled into the electric saw outer sleeve 5, a cavity is formed between the plane 8 and the inner wall of the electric saw outer sleeve 5. The cavity is used for the circulation of liquid. A second liquid inlet hole 9 is opened on the tube wall of the electric saw outer sleeve 5, and the second liquid inlet hole 9 is connected to the cavity.

[0042] A liquid guide hole 10 is processed in the connecting head 7, and a first liquid inlet hole 11 is opened on the side wall of the power mobile phone connecting shell 1. One end of the first liquid inlet hole 11 is connected to one end of the liquid guide hole 10, and the other end of the liquid guide hole 10 is connected to the second liquid inlet hole 9.

[0043] In use, the flushing pipe is connected to the first liquid inlet hole 11 on the power hand tool connecting shell 1, water is injected into the first liquid inlet hole 11 through the flushing pipe, the water enters the cavity along the liquid guide hole 10 and the second liquid inlet hole 9, and then flows out from the end of the electric saw rod assembly along the cavity to cool the blade 3, take away the heat generated by the blade 3 cutting bone at high speed, and protect the blade 3 and the surrounding tissue of the bone.

[0044] The above detailed description of the embodiments shown in the drawings explains the structure, features and effect of the utility model, and the above description is only the preferred embodiment of the utility model, but the utility model is not limited to the embodiment shown in the drawings, any change or modification made according to the concept of the utility model, or the equivalent embodiment with equivalent change, as long as it is within the scope of the utility model.

Claims

1. A medical powered oscillating knife, comprising a powered handpiece connecting housing (1), characterized in that: A power mobile phone connection assembly is provided in the power mobile phone connection housing (1), one end of the power mobile phone connection housing (1) is connected to one end of the electric saw rod assembly, a connecting rod (2) is rotatably installed in the electric saw rod assembly, the other end of the electric saw rod assembly is connected to the swinging blade head assembly, the power mobile phone connection assembly is connected to one end of the connecting rod (2), the other end of the connecting rod (2) is equipped with a swinging blade drive assembly, and the swinging blade drive assembly is connected to a blade (3) on the swinging blade head assembly.

2. The medical powered oscillating knife according to claim 1, characterized in that: The power mobile phone connection housing (1) is a cylindrical structure, and an anti-slip convex ring is provided on the outer wall of the power mobile phone connection housing (1).

3. The medical powered oscillating knife according to claim 2, characterized in that: The electric saw rod assembly comprises an electric saw outer sleeve (5), an electric saw inner sleeve (6) and a connector (7); the electric saw outer sleeve (5) is sleeved on the electric saw inner sleeve (6), and the two are fixedly connected; one end of the connector (7) is fixedly connected to one end of the electric saw outer sleeve (5), and the other end of the connector (7) is plugged into and fixedly connected to the power mobile phone connection housing (1).

4. The medical powered oscillating knife according to claim 3, characterized in that: A plane (8) is processed on the outer tube wall of the electric saw inner sleeve (6), one end of the plane (8) is at a certain distance from one end of the electric saw inner sleeve (6), and the other end of the plane (8) extends to the other end of the electric saw inner sleeve (6). A cavity is formed between the plane (8) and the inner wall of the electric saw outer sleeve (5), and the cavity is used for the circulation of liquid. A second liquid inlet hole (9) is opened on the tube wall of the electric saw outer sleeve (5), and the second liquid inlet hole (9) is connected to the cavity.

5. The medical powered oscillating knife according to claim 4, characterized in that: A liquid guide hole (10) is machined in the connector (7), and a first liquid inlet hole (11) is opened on the side wall of the power mobile phone connection shell (1), one end of the first liquid inlet hole (11) is connected to one end of the liquid guide hole (10), and the other end of the liquid guide hole (10) is connected to the second liquid inlet hole (9).

6. The medical powered oscillating knife according to claim 1, characterized in that: The power mobile phone connection assembly includes a mounting cylinder (12) and a steering shaft (13), the mounting cylinder (12) consists of a first mounting cylinder and a second mounting cylinder, the inner diameters of the first mounting cylinder and the second mounting cylinder are equal, the outer diameter of the first mounting cylinder is equal to the inner diameter of the power mobile phone connection shell (1), the first mounting cylinder is fixedly connected to the power mobile phone connection shell (1), the outer diameter of the second mounting cylinder is smaller than the outer diameter of the first mounting cylinder, the steering shaft (13) is rotatably mounted in the mounting cylinder (12), and a straight-line connection boss (14) is formed at one end of the steering shaft (13) away from the connecting rod (2), and the other end of the steering shaft (13) is plugged into and fixedly connected to one end of the connecting rod (2).

7. The medical powered oscillating knife according to claim 1, characterized in that: The swing knife drive assembly comprises a cam connecting shaft (15) and a cam (16), one end of the cam connecting shaft (15) is fixedly connected to the connecting rod (2), the cam (16) is fixedly arranged on the other end of the cam connecting shaft (15), and a protrusion (17) is formed on the end surface of the cam (16).

8. The medical powered oscillating knife according to claim 3, characterized in that: The swinging blade head assembly comprises a blade mounting housing (18) and the blade (3), one end of the blade mounting housing (18) is threadedly connected to the outer sleeve (5) of the electric saw, and the other end of the blade mounting housing (18) is formed with a blade mounting groove (19), one end of the blade (3) is mounted in the blade mounting groove (19) and connected to the blade mounting housing (18) via a positioning shaft (20).

9. The medical powered oscillating knife according to claim 8, characterized in that: A "U"-shaped connecting portion (21) is formed at one end of the blade (3) located inside the blade mounting housing (18), and an end surface of one end of the blade (3) located outside the blade mounting housing (18) is an arc surface, on which cutting teeth (22) are evenly distributed.

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