A planer and a planer system

Abstract

The embodiment of the present invention relates to a shaver and a shaver system, comprising: an outer shell, an outer tube, an inner tube, a transmission shaft, a translation module, a driving gear and a gear shaft; the proximal end of the outer tube is arranged at the distal end of the outer shell, and a window is provided on the side wall of the distal end of the outer tube; the inner tube is arranged in the outer tube, and when the inner tube reciprocates, the distal end of the inner tube passes through the window and cuts off the tissue entering the window; the transmission shaft comprises a translation transmission shaft, and the translation transmission shaft has a bidirectional helical structure; the translation module is engaged with the bidirectional helical structure, and when the translation transmission shaft rotates, the translation module can reciprocate along the bidirectional helical structure; the driving gear is fixed to the distal end of the transmission shaft; the gear shaft is rotatably connected to the translation module, and the inner tube is coaxially fixedly connected to the gear shaft, and the gear shaft comprises a gear part, and the gear part and the driving gear are kept in meshing when the inner tube reciprocates. The device can efficiently and safely remove tissue.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and specifically relates to a shaver and a shaver system, and more specifically, relates to a shaver and a shaver system suitable for removing tissues such as uterine fibroids, intrauterine polyps, etc. Background Art

[0002] In the prior art, there is a planer for removing tissues such as uterine fibroids and uterine polyps, which has a coaxially arranged hollow outer tube and inner tube, the inner tube is sleeved inside the outer tube, a window is provided on the side wall of the distal end of the outer tube, a blade is provided on the distal end of the inner tube, the inner tube is driven by a driving device, and can both reciprocate in the axial direction and rotate along its own central axis, and the inner tube is also connected to a vacuum device. When in use, fluid is supplied to the uterus to expand the uterus, the outer tube and the inner tube are extended into the uterus, the vacuum device is evacuated, and the tissue to be cut is sucked into the outer tube through the window of the outer tube, the driving device drives the inner tube to rotate and reciprocate, thereby removing the tissue, and the removed tissue is sucked out by the vacuum device through the hollow inner cavity of the inner tube until the operation is completed.

[0003] Such planers need to meet many requirements, such as cutting efficiency and safety. Completing the operation safely and in the shortest possible time is the key research direction of such surgical instruments. However, planers in the prior art have many defects, mainly including: (1) The inner tube is prone to shaking when rotating, causing friction between the inner and outer tubes, which in turn leads to jamming and breakage, and the broken fragments fall into the body, with serious consequences; (2) The types of tissues to be cut are different (such as endothelium, muscle, bone, calcified tissue, etc.), and the properties of the tissues vary greatly, such as hardness and toughness. Planers in the prior art have low cutting efficiency and weak cutting ability for tissues with higher hardness and toughness, which prolongs the operation time and even easily causes the blade of the inner tube to break; (3) The inner tube is prone to blockage. Summary of the invention

[0004] After unremitting research, the inventors found that the defects of the prior art planer are caused by its structure and parameter settings. In particular, it focuses on the inner tube running at a high speed and low reciprocating frequency to meet the required cutting efficiency. It is this limitation of traditional cognition that leads to the above problems of the planer. In order to solve the above technical problems, the embodiments of the present invention provide a planer and a planer system.

[0005] According to a first aspect of the present invention, there is provided a planer.

[0006] A planer comprises: a housing, an outer tube, an inner tube, a transmission shaft, a translation module, a driving gear and a gear shaft;

[0007] The outer tube has a proximal end and a distal end, the proximal end of the outer tube is arranged at the distal end of the outer shell, and a window is opened on the side wall of the distal end of the outer tube; the inner tube is arranged inside the outer tube, and when the inner tube reciprocates, the distal end of the inner tube passes through the window to cut off the tissue entering the window;

[0008] The transmission shaft comprises a translation transmission shaft, the translation transmission shaft has a bidirectional helical structure, the bidirectional helical structure comprises an advancing thread groove and a retreating thread groove; the translation module is engaged with the bidirectional helical structure, and when the translation transmission shaft rotates, the translation module can reciprocate along the bidirectional helical structure; the driving gear is coaxially fixed on the transmission shaft; the gear shaft is rotatably connected to the translation module, the inner tube is coaxially fixedly connected to the gear shaft, the gear shaft comprises a gear part, and the gear part is kept in mesh with the driving gear when the inner tube reciprocates;

[0009] The bidirectional helical structure is configured such that the pitches of the advancing thread groove and the retreating thread groove are the same, and the ratio of the effective thread length to the pitch is 2:1-6:1.

[0010] Furthermore, the ratio of the effective thread length to the thread pitch is 3:1.

[0011] Furthermore, the bidirectional spiral structure also includes a proximal transition groove and a distal transition groove, the proximal transition groove is used to connect the advancing thread groove and the retreating thread groove at the proximal end of the bidirectional thread structure, and the distal transition groove is used to connect the advancing thread groove and the retreating thread groove at the distal end of the bidirectional thread structure.

[0012] Furthermore, when the translation module moves along the proximal transition groove or the distal transition groove, the displacement of the translation module in the axial direction of the transmission shaft is greater than or equal to 0 and less than the pitch of the retreat thread groove.

[0013] Furthermore, the structure of the proximal transition groove and / or the distal transition groove is arranged so that when the transmission shaft rotates 180°, the translation module completes the switching between the advancing thread groove and the retreating thread groove.

[0014] According to the second aspect of the present invention, the present invention further provides another planer.

[0015] A planer comprises: a housing, an outer tube, an inner tube, a transmission shaft, a translation module, a driving gear and a gear shaft;

[0016] The outer tube has a proximal end and a distal end, the proximal end of the outer tube is arranged at the distal end of the outer shell, and a window is opened on the side wall of the distal end of the outer tube; the inner tube is arranged inside the outer tube, and when the inner tube reciprocates, the distal end of the inner tube passes through the window to cut off the tissue entering the window;

[0017] The transmission shaft comprises a translation transmission shaft, the translation transmission shaft has a bidirectional helical structure, the bidirectional helical structure comprises an advancing thread groove and a retreating thread groove; the translation module is engaged with the bidirectional helical structure, and when the translation transmission shaft rotates, the translation module can reciprocate along the bidirectional helical structure; the driving gear is coaxially fixed on the transmission shaft; the gear shaft is rotatably connected to the translation module, the inner tube is coaxially fixedly connected to the gear shaft, the gear shaft comprises a gear part, and the gear part is kept in mesh with the driving gear when the inner tube reciprocates;

[0018] The bidirectional helical structure is configured such that the pitches of the advancing thread groove and the retreating thread groove are different, and the pitch of the retreating thread groove is smaller than the pitch of the advancing thread groove.

[0019] Furthermore, the bidirectional spiral structure also includes a proximal transition groove and a distal transition groove, the proximal transition groove is used to connect the advancing thread groove and the retreating thread groove at the proximal end of the bidirectional thread structure, and the distal transition groove is used to connect the advancing thread groove and the retreating thread groove at the distal end of the bidirectional thread structure.

[0020] Furthermore, when the translation module moves along the proximal transition groove or the distal transition groove, the displacement of the translation module in the axial direction of the transmission shaft is greater than or equal to 0 and less than the pitch of the retreat thread groove.

[0021] Furthermore, the structure of the proximal transition groove and / or the distal transition groove is arranged so that when the transmission shaft rotates 180°, the translation module completes the switching between the advancing thread groove and the retreating thread groove.

[0022] Furthermore, the ratio of the pitch of the retreating thread groove to the pitch of the advancing thread groove is 1:4-3:4.

[0023] Furthermore, the ratio of the pitch of the retreating thread groove to the pitch of the advancing thread groove is 2:3.

[0024] Furthermore, the ratio of the pitch of the retreating thread groove to the pitch of the advancing thread groove is 3:4.

[0025] Furthermore, the ratio of the effective thread length of the bidirectional helical structure to the pitch of the advancing thread groove is 2:1-6:1, and the ratio of the effective thread length of the bidirectional helical structure to the pitch of the retreating thread groove is 4:1-6:1.

[0026] Furthermore, the ratio of the effective thread length of the bidirectional helical structure to the pitch of the advancing thread groove is 2.6:1, and the ratio of the effective thread length of the bidirectional helical structure to the pitch of the retreating thread groove is 3.5:1.

[0027] Furthermore, the effective thread length range of the bidirectional helical structure is 19.2 mm-10.8 mm; the pitch range of the advancing thread groove is 6.4 mm-3.2 mm; and the pitch range of the retreating thread groove is 4.8 mm-0.8 mm.

[0028] Furthermore, the effective thread length of the bidirectional helical structure is 15.2 mm; the pitch range of the advancing thread groove is 5.79 mm; and the pitch of the retreating thread groove is 4.34 mm.

[0029] Furthermore, the bidirectional helical structure is configured such that when the rotation speed of the transmission shaft is 1000-3000 rpm, the frequency of the reciprocating motion of the inner tube is greater than 4 times / second.

[0030] Furthermore, the bidirectional helical structure is configured such that when the rotation speed of the transmission shaft is 1500 rpm-2000 rpm, the frequency of the reciprocating motion of the inner tube is greater than 4 times / second.

[0031] Furthermore, the bidirectional helical structure is configured such that when the rotation speed of the transmission shaft is 1750 rpm, the frequency of the reciprocating motion of the inner tube is greater than 4 times / second.

[0032] According to the third aspect of the present invention, the present invention further provides another planer.

[0033] A planer comprises: a housing, an outer tube, an inner tube, a transmission shaft, a translation module, a driving gear and a gear shaft;

[0034] The outer tube has a proximal end and a distal end, the proximal end of the outer tube is arranged at the distal end of the outer shell, and a window is opened on the side wall of the distal end of the outer tube; the inner tube is arranged inside the outer tube, and when the inner tube reciprocates, the distal end of the inner tube passes through the window to cut off the tissue entering the window;

[0035] The transmission shaft comprises a translation transmission shaft, the translation transmission shaft has a bidirectional helical structure, the bidirectional helical structure comprises an advancing thread groove and a retreating thread groove; the translation module is engaged with the bidirectional helical structure, and when the translation transmission shaft rotates, the translation module can reciprocate along the bidirectional helical structure; the driving gear is coaxially fixed on the transmission shaft; the gear shaft is rotatably connected to the translation module, the inner tube is coaxially fixedly connected to the gear shaft, the gear shaft comprises a gear part, and the gear part is kept in mesh with the driving gear when the inner tube reciprocates;

[0036] The bidirectional helical structure is configured such that the pitches of the advancing thread groove and the retreating thread groove are the same, and when the transmission shaft rotates at a speed of 1000-3000 rpm, the frequency of the reciprocating motion of the inner tube is greater than 4 times / second.

[0037] Furthermore, when the rotation speed of the transmission shaft is between 1500 and 2000 revolutions per minute, the frequency of the reciprocating motion of the inner tube is greater than 4 times per second.

[0038] Furthermore, when the transmission shaft rotates at a speed of 1750 revolutions per minute, the frequency of the reciprocating motion of the inner tube is greater than 4 times per second.

[0039] Furthermore, the bidirectional spiral structure also includes a proximal transition groove and a distal transition groove, the proximal transition groove is used to connect the advancing thread groove and the retreating thread groove at the proximal end of the bidirectional thread structure, and the distal transition groove is used to connect the advancing thread groove and the retreating thread groove at the distal end of the bidirectional thread structure.

[0040] Furthermore, when the translation module moves along the proximal transition groove or the distal transition groove, the displacement of the translation module in the axial direction of the transmission shaft is greater than or equal to 0 and less than the pitch of the retreat thread groove.

[0041] Furthermore, the structure of the proximal transition groove and / or the distal transition groove is arranged so that when the transmission shaft rotates 180°, the translation module completes the switching between the advancing thread groove and the retreating thread groove.

[0042] Furthermore, the effective thread length range is 19.2 mm-10.8 mm, and the pitch range is 6.4 mm-3.2 mm.

[0043] Furthermore, the effective thread length is 15.2 mm and the thread pitch is 5.07 mm.

[0044] Furthermore, the ratio of the effective thread length to the thread pitch is 2:1-6:1.

[0045] Furthermore, the ratio of the effective thread length to the thread pitch is 3:1.

[0046] Furthermore, the transmission ratio of the driving gear to the gear portion of the gear shaft is in the range of 1.5-5.

[0047] Furthermore, the transmission ratio between the driving gear and the gear portion of the gear shaft is 2.73.

[0048] Furthermore, both ends of the inner tube are open and can be connected to an air extraction device; the gear shaft is a hollow structure, and the inner tube passes through the gear shaft.

[0049] Furthermore, the translation module includes a mounting frame and a threaded groove joint; the mounting frame has a first through hole, the translation transmission shaft passes through the first through hole, and can rotate freely in the first through hole; the threaded groove joint is fixed on the mounting frame, and the threaded groove joint is engaged with the forward threaded groove and the backward threaded groove. When the translation transmission shaft rotates in one direction, the threaded groove joint reciprocates along the threaded groove within the effective thread length range of the bidirectional spiral structure, thereby driving the mounting frame to reciprocate.

[0050] Furthermore, the thread groove engaging member includes a base and a pawl connected to each other, the base is fixedly connected to the mounting frame, and the pawl is engaged with the advancing thread groove or the retreating thread groove of the translation transmission shaft.

[0051] Furthermore, the pawl is in a Y-shaped structure.

[0052] According to a fourth aspect of the present invention, the present invention further provides a planer system.

[0053] A planer system, comprising any of the planers described above and a driving device;

[0054] The driving device has a driver, and the driver can drive the transmission shaft to rotate;

[0055] The driving device and the planer are configured to cause the inner tube to rotate at a cutting factor greater than 0.15, a rotation speed less than 5000 revolutions per minute, and to reciprocate at a reciprocating frequency greater than 4 times per second, wherein the cutting factor refers to the ratio of the reciprocating speed of the inner tube to the linear velocity of the outer surface of the top end of the inner tube blade when the inner tube rotates.

[0056] Furthermore, the output rotation speed of the driving device is 1000-3000 rpm.

[0057] Furthermore, the output rotation speed of the driving device is 1500-2000 rpm.

[0058] Furthermore, the output rotation speed of the driving device is 1750 rpm.

[0059] Beneficial effects of the embodiments of the present invention: The planer proposed in the embodiments of the present invention increases the frequency of the reciprocating motion of the inner tube by changing the structure of the bidirectional thread, thereby greatly improving the cutting efficiency; reduces the risk of shaking and improves safety by reducing the rotation speed of the inner tube; and improves safety by using a single material to form the inner tube, forming it in one step without welding. Other technical effects of the embodiments of the present invention will be further described in detail in the specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] Figure 1 It is a schematic diagram of an explosion of a planer provided in an embodiment of the present invention.

[0061] Figure 2 It is a schematic diagram of the composition structure of the planer proposed in an embodiment of the present invention.

[0062] Figure 3 It is a schematic diagram of the structure of the thread groove joint of the planer proposed in an embodiment of the present invention.

[0063] Figure 4 It is a schematic diagram of the bidirectional spiral structure of the translational transmission shaft of the planer proposed in an embodiment of the present invention. DETAILED DESCRIPTION

[0064] To make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. However, those skilled in the art will appreciate that the present invention is not limited to the accompanying drawings and the following embodiments.

[0065] Reference Figure 1-Figure 4 An embodiment of the present invention provides a planer, including a housing, a transmission shaft, a driving gear 30 , a translation module, a gear shaft 50 , an outer tube 60 and an inner tube 70 .

Claims

1. A planer, characterized in that: include: Housing, outer tube, inner tube, transmission shaft, translation module, driving gear and gear shaft; The outer tube has a proximal end and a distal end, the proximal end of the outer tube is arranged at the distal end of the outer shell, and a window is opened on the side wall of the distal end of the outer tube; the inner tube is arranged inside the outer tube, and when the inner tube reciprocates, the distal end of the inner tube passes through the window to cut off the tissue entering the window; The transmission shaft comprises a translation transmission shaft, the translation transmission shaft has a bidirectional helical structure, the bidirectional helical structure comprises an advancing thread groove and a retreating thread groove; the translation module is engaged with the bidirectional helical structure, and when the translation transmission shaft rotates, the translation module can reciprocate along the bidirectional helical structure; the driving gear is coaxially fixed on the transmission shaft; the gear shaft is rotatably connected to the translation module, the inner tube is coaxially fixedly connected to the gear shaft, the gear shaft comprises a gear part, and the gear part is kept in mesh with the driving gear when the inner tube reciprocates; The bidirectional helical structure is configured such that the pitch of the advancing thread groove and the retreating thread groove are the same, and the ratio of the effective thread length to the pitch is 2:1-6:1; The bidirectional helical structure further comprises a proximal transition groove and a distal transition groove, wherein the proximal transition groove is used to connect the advancing thread groove and the retreating thread groove at the proximal end of the bidirectional thread structure, and the distal transition groove is used to connect the advancing thread groove and the retreating thread groove at the distal end of the bidirectional thread structure; Both ends of the inner tube are open and can be connected to an air extraction device; the gear shaft is a hollow structure, and the inner tube passes through the gear shaft.

2. The planer according to claim 1, characterized in that The ratio of the effective thread length to the thread pitch is 3:

1.

3. The planer according to claim 1, characterized in that When the translation module moves along the proximal transition groove or the distal transition groove, the displacement of the translation module in the axial direction of the transmission shaft is greater than or equal to 0 and less than the pitch of the retreat thread groove.

4. The planer according to claim 1 or 3, characterized in that: The structure of the proximal transition groove and / or the distal transition groove is arranged so that when the transmission shaft rotates 180°, the translation module completes the switching between the advancing thread groove and the retreating thread groove.

5. A planer, characterized in that: include: Housing, outer tube, inner tube, transmission shaft, translation module, driving gear and gear shaft; The outer tube has a proximal end and a distal end, the proximal end of the outer tube is arranged at the distal end of the outer shell, and a window is opened on the side wall of the distal end of the outer tube; the inner tube is arranged inside the outer tube, and when the inner tube reciprocates, the distal end of the inner tube passes through the window to cut off the tissue entering the window; The transmission shaft comprises a translation transmission shaft, the translation transmission shaft has a bidirectional helical structure, the bidirectional helical structure comprises an advancing thread groove and a retreating thread groove; the translation module is engaged with the bidirectional helical structure, and when the translation transmission shaft rotates, the translation module can reciprocate along the bidirectional helical structure; the driving gear is coaxially fixed on the transmission shaft; the gear shaft is rotatably connected to the translation module, the inner tube is coaxially fixedly connected to the gear shaft, the gear shaft comprises a gear part, and the gear part is kept in mesh with the driving gear when the inner tube reciprocates; The bidirectional helical structure is configured such that the pitches of the advancing thread groove and the retreating thread groove are different, and the pitch of the retreating thread groove is smaller than the pitch of the advancing thread groove; The bidirectional helical structure further comprises a proximal transition groove and a distal transition groove, wherein the proximal transition groove is used to connect the advancing thread groove and the retreating thread groove at the proximal end of the bidirectional thread structure, and the distal transition groove is used to connect the advancing thread groove and the retreating thread groove at the distal end of the bidirectional thread structure; Both ends of the inner tube are open and can be connected to an air extraction device; the gear shaft is a hollow structure, and the inner tube passes through the gear shaft.

6. The planer according to claim 5, characterized in that When the translation module moves along the proximal transition groove or the distal transition groove, the displacement of the translation module in the axial direction of the transmission shaft is greater than or equal to 0 and less than the pitch of the retreat thread groove.

7. The planer according to claim 5 or 6, characterized in that The structure of the proximal transition groove and / or the distal transition groove is arranged so that when the transmission shaft rotates 180°, the translation module completes the switching between the advancing thread groove and the retreating thread groove.

8. The planer according to claim 5, characterized in that The ratio of the pitch of the retreating thread groove to the pitch of the advancing thread groove is 1:4 - 3:

4.

9. The planer according to claim 8, characterized in that The ratio of the pitch of the retreating thread groove to the pitch of the advancing thread groove is 2:

3.

10. The planer according to claim 8, characterized in that The ratio of the pitch of the retreating thread groove to the pitch of the advancing thread groove is 3:

4.

11. The planer according to claim 5, characterized in that The ratio of the effective thread length of the bidirectional helical structure to the pitch of the advancing thread groove is 2:1-6:1, and the ratio of the effective thread length of the bidirectional helical structure to the pitch of the retreating thread groove is 4:1-6:

1.

12. The planer according to claim 11, characterized in that The ratio of the effective thread length of the bidirectional helical structure to the pitch of the advancing thread groove is 2.6:1, and the ratio of the effective thread length of the bidirectional helical structure to the pitch of the retreating thread groove is 3.5:

1.

13. The planer according to claim 5, characterized in that The effective thread length range of the bidirectional helical structure is 19.2mm - 10.8mm; the pitch range of the advancing thread groove is 6.4mm - 3.2mm; and the pitch range of the retreating thread groove is 4.8mm - 0.8mm.

14. The planer according to claim 13, characterized in that The effective thread length of the bidirectional helical structure is 15.2 mm; the pitch range of the advancing thread groove is 5.79 mm; and the pitch of the retreating thread groove is 4.34 mm.

15. The planer according to claim 5, characterized in that The bidirectional helical structure is configured such that when the rotation speed of the transmission shaft is 1000-3000 rpm, the frequency of the reciprocating motion of the inner tube is greater than 4 times / second.

16. The planer according to claim 15, characterized in that The bidirectional helical structure is configured such that when the rotation speed of the transmission shaft is 1500 rpm-2000 rpm, the frequency of the reciprocating motion of the inner tube is greater than 4 times / second.

17. The planer according to claim 16, characterized in that The bidirectional helical structure is configured such that when the rotation speed of the transmission shaft is 1750 rpm, the frequency of the reciprocating motion of the inner tube is greater than 4 times / second.

18. A planer, characterized in that: include: Housing, outer tube, inner tube, transmission shaft, translation module, driving gear and gear shaft; The outer tube has a proximal end and a distal end, the proximal end of the outer tube is arranged at the distal end of the outer shell, and a window is opened on the side wall of the distal end of the outer tube; the inner tube is arranged inside the outer tube, and when the inner tube reciprocates, the distal end of the inner tube passes through the window to cut off the tissue entering the window; The transmission shaft comprises a translation transmission shaft, the translation transmission shaft has a bidirectional helical structure, the bidirectional helical structure comprises an advancing thread groove and a retreating thread groove; the translation module is engaged with the bidirectional helical structure, and when the translation transmission shaft rotates, the translation module can reciprocate along the bidirectional helical structure; the driving gear is coaxially fixed on the transmission shaft; the gear shaft is rotatably connected to the translation module, the inner tube is coaxially fixedly connected to the gear shaft, the gear shaft comprises a gear part, and the gear part is kept in mesh with the driving gear when the inner tube reciprocates; The bidirectional helical structure is configured such that the pitches of the advancing thread groove and the retreating thread groove are the same, and when the transmission shaft rotates at a speed of 1000-3000 rpm, the frequency of the reciprocating motion of the inner tube is greater than 4 times / second; The bidirectional helical structure further comprises a proximal transition groove and a distal transition groove, wherein the proximal transition groove is used to connect the advancing thread groove and the retreating thread groove at the proximal end of the bidirectional thread structure, and the distal transition groove is used to connect the advancing thread groove and the retreating thread groove at the distal end of the bidirectional thread structure; Both ends of the inner tube are open and can be connected to an air extraction device; the gear shaft is a hollow structure, and the inner tube passes through the gear shaft.

19. The planer according to claim 18, characterized in that When the rotation speed of the transmission shaft is between 1500 and 2000 rpm, the frequency of the reciprocating motion of the inner tube is greater than 4 times per second.

20. The planer according to claim 19, characterized in that When the transmission shaft rotates at a speed of 1750 rpm, the frequency of the reciprocating motion of the inner tube is greater than 4 times per second.

21. The planer according to claim 18, characterized in that When the translation module moves along the proximal transition groove or the distal transition groove, the displacement of the translation module in the axial direction of the transmission shaft is greater than or equal to 0 and less than the pitch of the retreat thread groove.

22. A planer according to claim 18 or 21, characterized in that The structure of the proximal transition groove and / or the distal transition groove is arranged so that when the transmission shaft rotates 180°, the translation module completes the switching between the advancing thread groove and the retreating thread groove.

23. The planer according to claim 1 or 18, characterized in that The effective thread length of the bidirectional helical structure ranges from 19.2 mm to 10.8 mm, and the pitch ranges from 6.4 mm to 3.2 mm.

24. A planer according to claim 23, characterized in that The effective thread length of the bidirectional helical structure is 15.2 mm, and the pitch is 5.07 mm.

25. The planer according to claim 18, characterized in that The ratio of the effective thread length to the thread pitch of the bidirectional helical structure is 2:1-6:

1.

26. A planer according to claim 25, characterized in that The ratio of the effective thread length to the thread pitch of the bidirectional helical structure is 3:

1.

27. A planer according to any one of claims 1 to 3 or any one of claims 5 to 6 or any one of claims 8 to 21, characterized in that: The transmission ratio range of the driving gear and the gear portion of the gear shaft is 1.5-5.

28. A planer according to claim 27, characterized in that The transmission ratio between the driving gear and the gear portion of the gear shaft is 2.

73.

29. A planer according to claim 1, 5 or 18, characterized in that: The translation module includes a mounting frame and a threaded groove joint; the mounting frame has a first through hole, the translation transmission shaft passes through the first through hole, and can rotate freely in the first through hole; the threaded groove joint is fixed on the mounting frame, and the threaded groove joint is engaged with the forward threaded groove and the backward threaded groove. When the translation transmission shaft rotates in one direction, the threaded groove joint reciprocates along the threaded groove within the effective thread length range of the bidirectional spiral structure, thereby driving the mounting frame to reciprocate.

30. The planer according to claim 29, characterized in that The thread groove engaging member comprises a base and a pawl connected to each other, wherein the base is fixedly connected to the mounting frame, and the pawl is engaged with the advancing thread groove or the retreating thread groove of the translation transmission shaft.

31. A planer according to claim 30, characterized in that The ratchet is in a Y-shaped structure.

32. A planer system, characterized in that: A planer and a drive device comprising: The driving device has a driver, and the driver can drive the transmission shaft to rotate; The driving device and the planer are configured to cause the inner tube to rotate at a cutting factor greater than 0.15, a rotation speed less than 5000 revolutions per minute, and to reciprocate at a reciprocating frequency greater than 4 times per second, wherein the cutting factor refers to the ratio of the reciprocating speed of the inner tube to the linear velocity of the outer surface of the top end of the inner tube blade when the inner tube rotates.

33. The planer system of claim 32, wherein: The output rotation speed of the driving device is 1000-3000 rpm.

34. The planer system of claim 33, wherein: The output rotation speed of the driving device is 1500-2000 rpm.

35. The planer system of claim 34, wherein: The output rotation speed of the driving device is 1750 rpm.

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