Medical power swing knife

Abstract

The invention 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, and a connecting rod (2) is rotationally installed in the electric saw rod assembly. 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 advantage 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 invention relates to an oscillating knife, in particular to a medical powered oscillating knife. Background Art

[0002] In surgical operations, bone cutting is usually required, but in traditional operations, doctors need to do it manually, which takes a lot of time and effort. In addition, traditional bone cutting cannot limit the range of operation, which will result in larger wounds and longer recovery time. In addition, during manual operation, it is impossible to ensure that the cutting is in a stable state throughout the entire process. Therefore, manual operation can easily cause damage to surrounding tissues.

[0003] Knives in the prior art are also difficult to disinfect. They require a lot of time to disinfect after each use. If the disinfection is not thorough, cross infection may occur. Summary of the invention

[0004] The purpose of the present invention is to provide a medical powered swing knife to solve the technical problems in the prior art. The medical powered swing knife has the advantages of high cutting efficiency and a fixed swing range during operation, so no unnecessary damage will be caused.

[0005] The present invention provides a medical power oscillating knife, comprising a power mobile phone connecting shell, a power mobile phone connecting assembly is arranged in the power mobile phone connecting shell, one end of the power mobile phone connecting shell is connected to one end of an electric saw rod assembly, a connecting rod is rotatably installed in the electric saw rod assembly, the other end of the electric saw rod assembly is connected to an oscillating knife head assembly, the power mobile phone connecting assembly is connected to one end of the connecting rod, the other end of the connecting rod is equipped with an oscillating knife driving assembly, and the oscillating knife driving assembly is connected to a blade on the oscillating knife head assembly.

[0006] In the aforementioned medical powered oscillating knife, preferably, the power handpiece connection shell is a cylindrical structure, and an anti-slip convex ring is provided on the outer wall of the power handpiece connection shell.

[0007] In the aforementioned medical power oscillating knife, preferably, the electric saw rod 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, the two are fixedly connected, one end of the connecting head is fixedly connected to one end of the electric saw outer sleeve, and the other end of the connecting head is plugged into and fixedly connected to the power mobile phone connection shell.

[0008] In the aforementioned medical powered oscillating knife, preferably, a plane is processed on the outer tube wall of the inner sleeve of the electric saw, one end of the plane is at a certain distance from one end of the inner sleeve of the electric saw, and the other end of the plane extends to the other end of the inner sleeve of the electric saw, and a cavity is formed between the plane and the inner wall of the outer sleeve of the electric saw, and the cavity is used for the circulation of liquid, and a second liquid inlet hole is opened on the tube wall of the outer sleeve of the electric saw, and the second liquid inlet hole is connected to the cavity.

[0009] In the aforementioned medical power oscillating knife, preferably, a liquid guide hole is processed in the connecting head, and a first liquid inlet hole is opened on the side wall of the power mobile phone connecting shell, one end of the first liquid inlet hole is connected to one end of the liquid guide hole, and the other end of the liquid guide hole is connected to the second liquid inlet hole.

[0010] In the aforementioned medical power swing knife, preferably, the power handpiece connection assembly includes 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 handpiece connection shell, the first mounting cylinder is fixedly connected to the power handpiece connection shell, the outer diameter of the second mounting cylinder is smaller than the outer diameter of the first mounting cylinder, the steering shaft is rotatably installed in the mounting cylinder, and a L-shaped connecting boss is formed at one end of the steering shaft away from the connecting rod, and the other end of the steering shaft is plugged into and fixedly connected to one end of the connecting rod.

[0011] In the aforementioned medical powered oscillating knife, preferably, the oscillating knife driving assembly includes a cam connecting shaft and a cam, one end of the cam connecting shaft is fixedly connected to the connecting rod, the cam is fixedly arranged at the other end of the cam connecting shaft, and a protrusion is formed on the end face of the cam.

[0012] In the aforementioned medical powered oscillating knife, preferably, the oscillating knife head assembly includes a blade mounting shell and the blade, one end of the blade mounting shell is threadedly connected to the outer sleeve of the electric saw, and the other end of the blade mounting shell is formed with a blade mounting groove, one end of the blade is installed in the blade mounting groove and is connected to the blade mounting shell through a positioning shaft.

[0013] In the aforementioned medical powered oscillating knife, preferably, a "U"-shaped connecting portion is formed at one end of the blade located inside the blade mounting housing, and an end face of the blade located outside the blade mounting housing is an arc surface, on which cutting teeth are evenly distributed.

[0014] Compared with the prior art, the present invention includes a power mobile phone connection housing, a power mobile phone connection assembly is arranged in the power mobile phone connection housing, one end of the power mobile phone connection housing is connected to one end of the electric saw rod assembly, a connecting rod 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, a swinging blade drive assembly is installed at the other end of the connecting rod, and the swinging blade drive assembly is connected to the blade on the swinging blade head assembly. The medical power swinging blade provided by the present invention can be connected to the power mobile phone in the prior art, the power mobile phone drives the power mobile phone connection assembly to rotate, the power is transmitted through the connecting rod, the swinging blade drive assembly drives the blade to swing, and the bone is cut by the blade. Since the swinging amplitude of the blade is limited, the present invention will not cause unnecessary damage.

[0015] In addition, the oscillating blade head assembly of the present invention is designed to be 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 is an axonometric view of the present invention;

[0017] Figure 2 is an exploded view of the present invention;

[0018] Figure 3 It is a half-section structure schematic diagram of the present invention;

[0019] Figure 4 It is a schematic diagram of a half-section structure of a 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 schematic diagram of the present invention.

[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] Embodiments of the present invention are described in detail below, examples of which 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 only used to explain the present invention, and cannot be interpreted as limiting the present invention.

[0026] Embodiment 1 of the present invention: Figure 1-Figure 8 As shown, a medical power oscillating knife comprises a power handpiece connecting shell 1, a power handpiece connecting assembly is arranged in the power handpiece connecting shell 1, one end of the power handpiece connecting shell 1 is connected to one end of an 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 an oscillating knife head assembly, the power handpiece 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 a 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 repeated in the present invention. The power mobile phone connection shell 1 is a cylindrical structure, and the outer wall of the power mobile phone connection shell 1 has 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, and 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 present invention designs the oscillating cutter head assembly to be detachably connected to the electric saw rod assembly. After each use, only a new oscillating cutter head assembly needs to be replaced. The oscillating cutter head assembly is a disposable consumable. In this way, each replacement of a new oscillating cutter head assembly effectively solves the cross-infection problem caused by incomplete disinfection. Replacing only the oscillating cutter head assembly can effectively reduce the cost of use.

[0029] In a specific embodiment, the electric saw rod assembly includes 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 shell 1.

[0030] Specifically, the connector 7 is a frustum structure, and the diameter of one end of the connector 7 connected to the power mobile phone connection housing 1 is larger than the diameter of the other end.

[0031] 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 and the two are coaxial. 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 installed in the mounting cylinder 12. A straight-line connecting boss 14 is formed at one end of the steering shaft 13 away from the connecting rod 2. The other end of the steering shaft 13 is plugged into and fixedly connected to one end of the connecting rod 2.

[0032] The end of the drive shaft in the power mobile phone is a groove structure. When the present invention is connected to the power mobile phone, the straight connecting boss 14 at the end of the steering shaft 13 is inserted into the groove at the end of the drive shaft of the power mobile phone to achieve effective connection.

[0033] The inner diameter of the mounting tube 12 is slightly larger than the maximum outer diameter of the steering shaft 13, that is, the steering shaft 13 does not contact the inner wall of the mounting tube 12 when rotating, thereby reducing friction. In this embodiment, a first bearing 4 is fixedly installed at one end of the inner sleeve 6 of the electric saw, and a second bearing 23 is fixedly installed at the other end of the inner sleeve 6 of the electric saw. One end of the connecting rod 2 passes through the second bearing 23 and is plugged and fixedly connected to the steering shaft 13. Under the action of the second bearing 23, the steering shaft 13 is kept coaxial with the mounting tube 12. The first bearing 4 and the second bearing 23 are arranged to make the present invention have less resistance during operation and smoother power transmission.

[0034] Furthermore, the swing knife drive assembly includes a cam connecting shaft 15 and a cam 16. The cam connecting shaft 15 is interference fit with the inner ring surface of the first bearing 4. One end of the cam connecting shaft 15 passes through the first bearing 4 and 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.

[0035] Under the action of the first bearing 4 , the cam connecting shaft 15 can rotate smoothly and remain coaxial with the inner sleeve 6 of the electric saw. The raised portion 17 at the end of the cam 16 is used to drive the blade 3 to swing.

[0036] Furthermore, the swinging cutter head assembly includes a blade mounting housing 18 and a blade 3. One end of the blade mounting housing 18 is threadedly connected to the outer sleeve 5 of the electric saw. The other end of the blade mounting housing 18 is formed with a blade mounting groove 19. One end of the blade 3 is installed in the blade mounting groove 19 and is connected to the blade mounting housing 18 through a positioning shaft 20.

[0037] The width of the blade installation groove 19 is equal to the thickness of the blade 3, so that the blade 3 will 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. The blade 3 can only reciprocate with a small amplitude around the positioning shaft 20 during operation to achieve bone cutting through the reciprocating swing.

[0038] 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 the end of the blade 3 located outside the blade mounting housing 18 is an arc surface, on which cutting teeth 22 are evenly distributed.

[0039] The working principle of the present invention is as follows: when in use, the power mobile phone connection housing 1 is installed on the power mobile phone. After installation, the straight-line connection 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 shaft 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. The swing amplitude of the blade 3 can be changed by changing their sizes. 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] Embodiment 2 of the present invention: Figure 1-Figure 7 As shown, based on the first embodiment, this embodiment adds a cooling function.

[0041] In the present embodiment, a plane 8 is processed on the outer tube wall of the electric saw inner sleeve 6, and 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 demand. For example, in the present 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] When in use, connect the flushing tube to the first liquid inlet hole 11 on the power mobile phone connecting shell 1, inject water into the first liquid inlet hole 11 through the flushing tube, and 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 high-speed cutting of the bone by the blade 3, and play a role in protecting the blade 3 and the surrounding tissue of the bone.

[0044] The above describes in detail the structure, features and effects of the present invention based on the embodiments shown in the drawings. The above is only a preferred embodiment of the present invention, but the present invention is not limited to the scope of implementation shown in the drawings. Any changes made according to the concept of the present invention, or modifications to equivalent embodiments with equivalent changes, which still do not exceed the spirit covered by the description and drawings, should be within the protection scope of the present invention.

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 an oscillating 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 an oscillating blade drive assembly, and the oscillating blade drive assembly is connected to a blade (3) on the oscillating 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 inner sleeve (6) of the electric saw, one end of the plane (8) is at a certain distance from one end of the inner sleeve (6) of the electric saw, and the other end of the plane (8) extends to the other end of the inner sleeve (6) of the electric saw. A cavity is formed between the plane (8) and the inner wall of the outer sleeve (5) of the electric saw, and the cavity is used for the circulation of liquid. A second liquid inlet hole (9) is opened on the tube wall of the outer sleeve (5) of the electric saw, 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 connecting head (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 comprises a mounting cylinder (12) and a steering shaft (13), wherein the mounting cylinder (12) is composed of a first mounting cylinder and a second mounting cylinder, wherein the inner diameters of the first mounting cylinder and the second mounting cylinder are equal, and 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), and the outer diameter of the second mounting cylinder is smaller than the outer diameter of the first mounting cylinder, and the steering shaft (13) is rotatably mounted in the mounting cylinder (12), and an end of the steering shaft (13) away from the connecting rod (2) is formed with a straight-line connecting boss (14), 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 oscillating 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; 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 is 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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