Disposable planer body and planer having the same

Abstract

The application discloses a disposable planer body, which comprises an outer cutter tube, an inner cutter tube rotatably sleeved in the outer cutter tube and with a proximal end extending out of the outer cutter tube, a rotating clamping joint fixedly sleeved on the proximal end of the inner cutter tube and rotating together with the inner cutter tube, a handle shell sleeved on the rotating clamping joint, and a rotating adjusting structure rotatably sleeved on the handle shell and through which the proximal end of the inner cutter tube passes. The distal end of the outer cutter tube is provided with an outer cutter edge, and the distal end of the inner cutter tube is provided with an inner cutter edge. The rotating adjusting structure is assembled with the proximal end of the outer cutter tube and can drive the outer cutter tube to rotate around the inner cutter tube. The handle shell has a shell channel in the interior, through which a rotating driver outside is inserted into the handle shell from an end surface of the handle shell opposite to the rotating clamping joint and makes a rotating end of the rotating driver clamped with the rotating clamping joint. The disposable planer body has the advantages of convenient adjustment operation of the outer cutter edge orientation and one-time use. In addition, the application further discloses a planer.

Description

Technical Field

[0001] This invention relates to a medical device, and more particularly to a disposable planer body and a planer having the disposable planer body. Background Technology

[0002] For example, the use of a shaving tool is indispensable for minimally invasive surgery inside the uterine cavity, such as hysteroscopy, to remove uterine fibroids, polyps, and other diseased tissues.

[0003] Currently, in the blade assembly, planer, and planing system disclosed in Chinese patent application number 202121668411.X, the adjustment of the cutting window of its outer blade is very troublesome. This is because each adjustment requires the operator to rotate the entire planer, and the planer is connected to the main equipment via a cable. Therefore, the entire planer is also subject to the pulling and restriction of the cable during rotation, which makes the adjustment of the cutting window of the outer blade very troublesome.

[0004] Furthermore, in a blade assembly, planer, and planing system disclosed in Chinese Patent Application No. 202121668411.X, the drive assembly assembled inside the housing assembly is not an independent module that can be quickly assembled and disassembled relative to the housing assembly; and since the housing assembly is the part that the operator holds, the housing assembly needs to be strictly disinfected after each operation, which makes it impossible for the housing assembly and the blade assembly to be used disposable.

[0005] Therefore, there is an urgent need for a disposable planer body and a planer having the disposable planer body to overcome the above-mentioned defects. Summary of the Invention

[0006] One objective of this invention is to provide a disposable planer body that has the advantages of convenient cutting surface adjustment and single-use.

[0007] Another object of the present invention is to provide a planer with the advantages of convenient cutting surface adjustment and single-use.

[0008] To achieve the above objectives, the disposable planer body of the present invention includes an outer blade tube, an inner blade tube, a rotary clamping connector, a handle housing, and a rotary adjustment structure. The inner blade is rotatably fitted inside the outer blade, with its proximal end extending out of the outer blade. The distal end of the inner blade has an inner cutting edge communicating with its internal space. The distal end of the outer blade has an outer cutting edge that exposes the distal end of the inner blade and communicates with its internal space; the outer cutting edge and the inner cutting edge are arranged opposite each other. A rotary locking connector is fixedly fitted onto the proximal end of the inner blade and rotates together with the inner blade. A handle housing is fitted over the rotary locking connector. A rotary adjustment mechanism is rotatably fitted onto the handle housing, allowing the proximal end of the inner blade to pass through. The rotary adjustment mechanism is also assembled and connected to the proximal end of the outer blade and can drive the outer blade to rotate around the inner blade. The handle housing has an internal channel through which an external rotary actuator is inserted from the end face of the handle housing opposite to the rotary locking connector, and the rotating end of the rotary actuator engages with the rotary locking connector.

[0009] Compared to existing technologies, the invention utilizes a rotary adjustment structure that is rotatably fitted onto the handle housing and allows the proximal end of the inner blade tube to pass through. This rotary adjustment structure is also connected to the proximal end of the outer blade tube. This allows the operator to rotate the outer blade tube around the inner blade tube simply by rotating the rotary adjustment structure. Therefore, adjusting the outer blade edge does not require rotating the entire disposable planer body, making the outer blade edge adjustment operation convenient. Furthermore, the use of a rotary connector and a housing channel within the handle housing allows for the insertion and removal of an external rotary actuator from the handle housing. This allows the rotary actuator to be made as a separate module from the disposable planer body, thus enabling the disposable planer body to be used only once.

[0010] Preferably, the rotary adjustment structure is partially fitted inside the handle housing. At its position within the handle housing, the rotary adjustment structure is fitted with a first sealing ring that seals against the side wall of the handle housing and a first rolling bearing that mates with the side wall of the handle housing. The rotary snap-fit ​​connector is fitted with a second rolling bearing that mates with the side wall of the handle housing and a second sealing ring that seals against the side wall of the handle housing. The first rolling bearing and the second rolling bearing are each located between the first sealing ring and the second sealing ring. An external pipe connector is provided on the side wall of the handle housing, and the rotary snap-fit ​​connector has a communicating channel for connecting the external pipe connector to the internal space of the inner blade tube. The communicating channel is located between the first sealing ring and the second sealing ring.

[0011] Preferably, the end of the rotary connector facing away from the rotary adjustment structure has an annular groove arranged on opposite sides of the first sealing ring with the second sealing ring as the center. The annular groove is fitted with a third sealing ring, which partially extends out of the annular groove and seals with the handle housing.

[0012] Preferably, the connecting channel is an inclined channel that gradually expands outward from the rotation center line of the rotary connector.

[0013] Preferably, a metal sleeve is fixedly fitted inside the handle housing. The first sealing ring, the second sealing ring, the first rolling bearing, the second rolling bearing, and the rotary snap-fit ​​connector are located inside the metal sleeve. The first sealing ring and the second sealing ring are respectively sealed to the metal sleeve, and the first rolling bearing and the second rolling bearing are respectively assembled to the metal sleeve.

[0014] Preferably, the rotary connector is provided with a plurality of claw blocks arranged apart from each other around the rotation center line of the rotary connector, and the end of each claw block has a tapered structure that gradually decreases in size in the direction away from the rotation adjustment structure.

[0015] Preferably, the handle housing is provided with a plurality of protruding ribs that are spaced apart from each other in the housing channel and around the center line of the housing channel. The ribs extend in the direction in which the external rotary driver is inserted into the housing channel, and all the ribs are used together to clamp the rotary driver inserted into the housing channel.

[0016] Preferably, the disposable planer body of the present invention further includes a flexible protective sleeve that is fitted over the handle housing. One end of the flexible protective sleeve is fixedly connected to the side wall of the handle housing. The position of the handle housing for fixed connection with the flexible protective sleeve defines a first segment of the housing adjacent to the rotation adjustment structure and a second segment of the housing away from the rotation adjustment structure. The other end of the flexible protective sleeve can extend to completely cover the second segment of the housing, or the other end of the flexible protective sleeve can retract to partially expose the second segment of the housing.

[0017] Preferably, the second section of the housing has a plurality of recessed elongated grooves spaced apart from each other and arranged around the center line of the housing channel, and through holes connecting the recessed elongated grooves and the housing channel, each recessed elongated groove corresponding to a plurality of through holes arranged spaced apart from each other.

[0018] To achieve the above objectives, the planer of the present invention includes a rotary driver and the aforementioned disposable planer body. The rotary driver can be inserted into the housing channel from the end face of the handle housing facing away from the rotary connector and the rotating end of the rotary driver engages with the rotary connector.

[0019] Compared to existing technologies, the invention utilizes a rotary adjustment structure that is rotatably fitted onto the handle housing and through which the proximal end of the inner blade tube passes. This rotary adjustment structure is also connected to the proximal end of the outer blade tube. This allows the operator to rotate the outer blade tube around the inner blade tube simply by rotating the rotary adjustment structure. Therefore, adjusting the outer blade edge of the outer blade tube does not require the operator to rotate the entire planer, making the adjustment operation convenient. Furthermore, the rotary actuator can be inserted and removed from the handle housing via a rotary snap-fit ​​connector and a housing channel. This allows the rotary actuator to be made as a separate module from the disposable planer body, thus enabling the disposable planer body of the invention to be used only once. Attached Figure Description

[0020] Figure 1 This is a plan view of the planer of the present invention when the flexible protective sleeve is in the initial position.

[0021] Figure 2 Is Figure 1 The diagram shows the state when the flexible protective sleeve extends to the preset position.

[0022] Figure 3 yes Figure 1 The image shows a three-dimensional view of the planer with its flexible protective sleeve concealed.

[0023] Figure 4 Is Figure 3 The diagram shows the state when the rotary actuator is pulled out of the handle housing to a disengaged position.

[0024] Figure 5 yes Figure 4 A three-dimensional exploded view.

[0025] Figure 6 yes Figure 5 A further exploded 3D diagram.

[0026] Figure 7 yes Figure 6 A three-dimensional exploded view from another angle.

[0027] Figure 8 yes Figure 5 Enlarged view of section D.

[0028] Figure 9 yes Figure 3 A plan view viewed in the direction indicated by arrow B.

[0029] Figure 10 It is along Figure 9 Internal view of the section cut along the EE line.

[0030] Figure 11 yes Figure 10 Enlarged view of section F in the middle.

[0031] Figure 12 yes Figure 10 A magnified view of section G in the middle.

[0032] Figure 13 This is a perspective view of the rotary snap-fit ​​connector in the main body of the disposable planer of the present invention.

[0033] Figure 14 This is a perspective view of the handle housing in the main body of the disposable planer of the present invention.

[0034] Figure 15 yes Figure 14 The diagram shows a plan view of the handle housing viewed in the direction indicated by arrow A.

[0035] Figure 16 yes Figure 14 The diagram shows a plan view of the handle housing viewed in the direction indicated by arrow H. Detailed Implementation

[0036] To illustrate the technical content and structural features of the present invention in detail, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0037] Please combine Figure 1 The shaving tool 1000 of the present invention is used in conjunction with a hysteroscope and can enter the uterine cavity along the instrument channel of the hysteroscope, thereby meeting the need for the shaving tool 1000 of the present invention to remove diseased tissue in the uterine cavity. Since the specific structure of the hysteroscope and how the shaving tool 1000 of the present invention enters the uterine cavity along the instrument channel of the hysteroscope are well known in the art, they will not be described in detail here.

[0038] Combination Figure 3 and Figure 7 The planer 1000 of the present invention includes a disposable planer body 100 and a rotary driver 200. Optionally, as an example, the rotary driver 200 is a rotary motor. Obviously, depending on actual needs, the rotary driver 200 can also be other drivers known in the art besides a rotary motor, and is not limited thereto. In addition, the rotary driver 200 can be inserted into the housing channel 42 from the end face 41 of the handle housing 40 facing away from the rotary snap-fit ​​connector 30, and the rotating end 210 of the rotary driver 200 is snapped into the rotary snap-fit ​​connector 30 to facilitate quick installation and quick removal between the rotary driver 200 and the disposable planer body 100, thereby meeting the need for disposable use of the disposable planer body 100.

[0039] Combined Figures 10 to 13The disposable planer body 100 includes an outer blade tube 10, an inner blade tube 20, a rotary clamping connector 30, a handle housing 40, and a rotation adjustment structure 50. The inner blade tube 20 is rotatably fitted inside the outer blade tube 10 to allow the inner blade tube 20 to rotate relative to the outer blade tube 10; the proximal end 21 of the inner blade tube 20 extends out of the outer blade tube 10 to allow the proximal end 21 of the inner blade tube 20 to be assembled with the rotary clamping connector 30, as shown in the diagram. Figure 12 As shown; the distal end 22 of the inner blade tube 20 has an inner blade edge 24 that communicates with the internal space 23 of the inner blade tube 20, as shown in the figure. Figure 8 and Figure 11 As shown.

[0040] The distal end 11 of the outer blade tube 10 has an outer blade opening 13 that communicates with the internal space 12 of the outer blade tube 10. The outer blade opening 13 exposes the distal end 22 of the inner blade tube 20. The outer blade opening 13 is also arranged opposite to the inner blade opening 24, as shown in the figure. Figure 11 As shown, this is to meet the requirement that the inner blade 24 of the inner blade tube 20 can remove the lesion tissue facing the outer blade 13 of the outer blade tube 10 during rotation. Since the specific structures of the outer blade tube 10 and the inner blade tube 20 are well known in the art, they will not be described in detail here.

[0041] The rotary clamp 30 is fixedly fitted onto the proximal end 21 of the inner knife tube 20 to meet the requirement that the rotary clamp 30 and the inner knife tube 20 rotate together. For example, the rotary clamp 30 and the proximal end 21 of the inner knife tube 20 can be fixed together by an interference fit. Obviously, the rotary clamp 30 and the proximal end 21 of the inner knife tube 20 can also be fixed together by adhesive bonding. Alternatively, other fixing methods known in the art can be used to fix the rotary clamp 30 and the proximal end 21 of the inner knife tube 20 together.

[0042] The rotary adjustment mechanism 50 is rotatably mounted on the handle housing 40 to allow the rotary adjustment mechanism 50 to rotate relative to the handle housing 40. Furthermore, the rotary adjustment mechanism 50 is also assembled with the proximal end 14 of the outer blade tube 10. For example, the rotary adjustment mechanism 50 and the proximal end 14 of the outer blade tube 10 can be assembled together by an interference fit. Alternatively, they can be assembled together by adhesive bonding, or other assembly methods known in the art can be used to assemble the rotary adjustment mechanism 50 with the proximal end 14 of the outer blade tube 10. This satisfies the requirement that the rotary adjustment mechanism 50 can drive the outer blade tube 10 to rotate around the inner blade tube 20, thereby allowing the operator to adjust the orientation of the outer blade edge 13 of the outer blade tube 10 by rotating the rotary adjustment mechanism 50. It should be noted that, since the rotary adjustment mechanism 50 is assembled with the proximal end 14 of the outer blade tube 10, correspondingly, the proximal end 21 of the inner blade tube 20 also passes through the rotary adjustment mechanism 50, as shown in the diagram. Figure 15 As shown.

[0043] The handle housing 40 has a housing channel 42 inside, which allows the rotary driver 200 to be inserted into the handle housing 40 from the end face 41 opposite to the rotary connector 30. The channel also allows the rotating end 210 of the rotary driver 200 inserted into the handle housing 40 to engage with the rotary connector 30, thus satisfying the need for the rotary driver 200 to drive the rotary connector 30 and the inner blade tube 20 to rotate together. Specifically, in Figure 1 and Figure 2 As an example, the disposable planer body 100 also includes a flexible protective sleeve 70 that is fitted over the handle housing 40, with one end 71 of the flexible protective sleeve 70 touching the side wall 47 of the handle housing 40 (see...). Figure 10 A fixed connection is made so that the handle housing 40 is used in a position for fixed connection with the flexible protective sleeve 70 (e.g., Figure 10 The annular fixing groove (shown by reference numeral 48) defines the handle housing 40 into a first segment 40a adjacent to the rotation adjustment structure 50 and a second segment 40b distant from the rotation adjustment structure 50; alternatively, combined with Figure 10 One way to fix one end 71 of the flexible protective sleeve 70 to the side wall 47 of the handle housing 40 is as follows: an annular embedding groove 48 is provided on the side wall 47 of the handle housing 40, and a fastening ring 80 is sleeved on one end 71 of the flexible protective sleeve 70 and embedded in the annular embedding groove 48 together with that end 71. Obviously, depending on actual needs, the fixed connection method between one end 71 of the flexible protective sleeve 70 and the side wall 47 of the handle housing 40 can also be other, so it is not considered... Figure 1 , Figure 2 and Figure 10 The description is limited. Additionally, the other end 72 of the flexible protective sleeve 70 can extend to completely cover the second section 40b of the housing, as shown in the diagram. Figure 2 As shown, this provides broader protection for the rotary actuator 200, ensuring that it does not come into contact with body tissue or bodily fluids from body tissue. Furthermore, the other end 72 of the flexible protective sleeve 70 can retract to partially expose the second section 40b of the housing, facilitating the insertion and removal of the rotary actuator 200 from the handle housing 40, as shown in the diagram. Figure 1 As shown. More specifically, see the description below.

[0044] Combination Figures 3 to 7 , Figures 9 to 10 , Figure 14 and Figure 16As an example, the second section 40b of the housing has a plurality of recessed elongated grooves 49a arranged around the center line C of the housing channel 42 and a through hole 49b connecting the recessed elongated grooves 49a and the housing channel 42. Each recessed elongated groove 49a corresponds to a plurality of through holes 49b arranged around each other. This design further ensures the reliability of the flexible protective sleeve 70 being thoroughly disinfected.

[0045] like Figure 12 As shown, as an example, the rotary adjustment structure 50 is partially fitted inside the handle housing 40. A first sealing ring 61 and a first rolling bearing 62, which are fitted to the side wall 47 of the handle housing 40, are mounted on the rotary adjustment structure 50 at position 41 within the handle housing 40. A second rolling bearing 63 and a second sealing ring 64, which are fitted to the side wall 47 of the handle housing 40, are mounted on the rotary snap-fit ​​connector 30. The first rolling bearing 62 and the second rolling bearing 63 are located between the first sealing ring 61 and the second sealing ring 64, respectively. An outer pipe connector 65 is provided on the side wall 47 of the handle housing 40. The rotary snap-fit ​​connector 30 has a connecting channel 31 for connecting the outer pipe connector 65 to the internal space 23 of the inner blade tube 20. The connecting channel 31 is located between the first sealing ring 61 and the second sealing ring 64, as shown in the diagram. Figure 12 As shown, on the one hand, it allows the excised lesion tissue to be discharged sequentially through the outer incision 13, the inner incision 24, the internal space 23 of the inner incision tube 20, and the connecting channel 31, via the outer pipe connector 65; on the other hand, it makes the rotational operation of the rotational adjustment structure 50 and the rotational locking connector 30 on the handle housing 40 more flexible and smoother. Specifically, in Figure 12 In this example, the end 32 of the rotary snap-fit ​​connector 30 facing away from the rotation adjustment structure 50 has an annular groove 33. The annular groove 33 is arranged on opposite sides of the first sealing ring 62 with the second sealing ring 64 as the center. A third sealing ring 34 is embedded in the annular groove 33, and the third sealing ring 34 partially extends out of the annular groove 33 and seals with the handle housing 40. This design provides both axial sealing (achieved by the third sealing ring 34) and radial sealing (achieved by the second sealing ring 64) between the rotary snap-fit ​​connector 30 and the handle housing 40, thus improving the sealing performance between the rotary snap-fit ​​connector 30 and the handle housing 40. Furthermore, in Figure 13 In this example, the connecting channel 31 is an inclined channel that gradually expands outward from the rotation center line 35 of the rotary connector 30 to increase the flow capacity of the connecting channel 31.

[0046] It is worth noting that, since the rotary connector 30 needs to rotate during operation, the connecting channel 31 intermittently connects the internal space 23 of the inner blade tube 20 with the outer pipe connector 65. Furthermore, one embodiment for installing the first rolling bearing 62 is as follows: the first rolling bearing 62 can be fitted onto position 51 of the rotary adjustment structure 50 using its inner ring. Before fitting it onto position 51, adhesive is applied to position 51 to fix the inner ring of the first rolling bearing 62 to position 51. Then, adhesive is used to fix the outer ring of the first rolling bearing 62 to the handle housing 40. Another embodiment for installing the second rolling bearing 63 is as follows: the second rolling bearing 63 can be fitted onto the rotary connector 30 using its inner ring. Before fitting it onto the rotary connector 30, adhesive is applied to the corresponding position of the rotary connector 30 to fix the inner ring of the second rolling bearing 63 to the rotary connector 30. Then, adhesive is used to fix the outer ring of the second rolling bearing 63 to the handle housing 40. Before the outer ring of the second rolling bearing 63 is glued to the handle housing 40, the second sealing ring 64 and the third sealing ring 34 are first assembled onto the rotary snap-fit ​​connector 30. Similarly, before the outer ring of the first rolling bearing 62 is glued to the handle housing 40, the first sealing ring 61 is first fitted onto the rotary adjustment structure 50, and this is done only after the rotary snap-fit ​​connector 30, along with the second rolling bearing 63, the second sealing ring 64, and the third sealing ring 65, are installed. It should be noted that the above-described embodiments for the installation of the first rolling bearing 62 and the second rolling bearing 63 are merely illustrative and are not intended to be limiting.

[0047] like Figure 4 , Figure 12 and Figure 13 As shown, the rotary snap-fit ​​connector 30 has four locking claw blocks 36 arranged spaced apart from each other, all sharing a common rotation center line 35. Each locking claw block 36 has a tapered structure 361 at its end that gradually decreases in size towards the direction away from the rotation adjustment structure 50. This design facilitates the snap-fit ​​operation between the rotary snap-fit ​​connector 30 and the rotating end 210 of the rotary driver 200. Furthermore, in... Figure 6 In the handle housing 40, six protruding ribs 46 are provided, arranged around the center line C of the housing channel 42 and spaced apart. The ribs 46 extend in the direction in which the rotary driver 200 is inserted into the housing channel 42 (see arrow A). All the ribs 46 work together to clamp the rotary driver 200 inserted into the housing channel 42, ensuring the stability of the rotary driver 200 inserted into the handle housing 46. It should be noted that, although Figure 13 The diagram shows four claw blocks 36. However, depending on actual needs, there could be one, two, three, five, or more claw blocks 36. Therefore, it is not considered... Figure 13 The above is the limit; also, although Figure 15 The diagram shows six raised ribs 46. Clearly, depending on actual needs, the number of raised ribs 46 can be one, two, three, four, five, seven, or more. Therefore, it is not limited to this. Figure 15 The diagram is for illustrative purposes only; furthermore, since the rotating end 210 of the rotary actuator 200 is used to engage with the jaw block 36, correspondingly, the rotating end 210 of the rotary actuator 200 is provided with a matching jaw block 220 for engaging with the jaw block 36. The end of the matching jaw block 220 has a tapered structure 221, as shown in the diagram. Figures 4 to 6 As shown.

[0048] like Figure 12 As shown, as an example, a metal sleeve 44 is fixedly fitted inside the handle housing 40. In this case, the first sealing ring 61, the second sealing ring 64, the first rolling bearing 62, the second rolling bearing 63, and the rotary snap-fit ​​connector 30 are located inside the metal sleeve 44. The first sealing ring 61 and the second sealing ring 64 are respectively in a sealing fit with the metal sleeve 44, and the first rolling bearing 62 and the second rolling bearing 63 are respectively in an assembly fit with the metal sleeve 44. Therefore, the rigidity of the handle housing 40 is increased by means of the metal sleeve 44. Specifically, as an example, the metal sleeve 44 can be fixed inside the handle housing 40 by interference fit, adhesive, or in-mold molding. It should be noted that, depending on actual needs, the metal sleeve 44 may not be provided inside the handle housing 40, that is, the position of the metal sleeve 44 is part of the structure of the handle housing 40.

[0049] like Figure 1 and Figure 2 As shown, as an example, the end of the rotary adjustment structure 50 facing away from the handle housing 40 is also fitted with an identification ring 52, so as to facilitate the operator to quickly identify the specifications of the disposable planer body 100.

[0050] Compared to existing technologies, the rotary adjustment structure 50, which is rotatably mounted on the handle housing 40 and allows the proximal end 21 of the inner blade tube 20 to pass through, and which is also connected to the proximal end 14 of the outer blade tube 10, allows the operator to rotate the outer blade tube 10 around the inner blade tube 20 simply by rotating the rotary adjustment structure 50. Therefore, adjusting the outer blade edge 13 of the outer blade tube 10 does not require rotating the entire disposable planer body 100, making the adjustment of the outer blade edge 13 of the outer blade tube 10 convenient. Furthermore, the rotary driver 200 can be inserted into and removed from the handle housing 40 via the rotary snap-fit ​​connector 30 and the housing channel 42 of the handle housing 40. This allows the rotary driver 200 to be made as a separate module from the disposable planer body 100, thus enabling the disposable planer body 100 to be used only once.

[0051] The above description is merely a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. Therefore, any equivalent variations made in accordance with the claims of the present invention are within the scope of the present invention.

Claims

1. A disposable planer body, comprising an outer blade tube, an inner blade tube rotatably fitted inside the outer blade tube and extending proximally from the outer blade tube, a rotary clamping connector fixedly fitted onto the proximal end of the inner blade tube and rotating together with the inner blade tube, and a handle housing sleeved on the rotary clamping connector, wherein the distal end of the outer blade tube has an outer cutting edge that exposes the distal end of the inner blade tube and communicates with the internal space of the outer blade tube, and the distal end of the inner blade tube has an inner cutting edge that is arranged opposite to the outer cutting edge and communicates with the internal space of the inner blade tube, characterized in that, The disposable planer body also includes a rotation adjustment structure that is rotatably fitted onto the handle housing and through which the proximal end of the inner blade tube passes. The rotation adjustment structure is also assembled and connected to the proximal end of the outer blade tube and can drive the outer blade tube to rotate around the inner blade tube. The interior of the handle housing has a housing channel through which an external rotation driver is inserted into the handle housing from the end face of the handle housing opposite to the rotation snap-fit ​​connector and the rotating end of the rotation driver engages with the rotation snap-fit ​​connector.

2. The disposable planer body according to claim 1, characterized in that, The rotary adjustment structure is partially fitted inside the handle housing. A first sealing ring and a first rolling bearing, both sealingly fitted to the side wall of the handle housing, are mounted on the rotary adjustment structure within the handle housing. A second rolling bearing and a second sealing ring, both sealingly fitted to the side wall of the handle housing, are mounted on the rotary snap-fit ​​connector. The first and second rolling bearings are located between the first and second sealing rings. An external pipe connector is provided on the side wall of the handle housing. The rotary snap-fit ​​connector has a communication channel for connecting the external pipe connector to the internal space of the inner blade tube, and this communication channel is located between the first and second sealing rings.

3. The disposable planer body according to claim 2, characterized in that, The end of the rotary connector facing away from the rotary adjustment structure has an annular groove arranged on opposite sides of the first sealing ring with the second sealing ring as the center. The annular groove is fitted with a third sealing ring, which partially extends out of the annular groove and seals with the handle housing.

4. The disposable planer body according to claim 2, characterized in that, The connecting channel is an inclined channel that gradually expands outward from the rotation center line of the rotary connector.

5. The disposable planer body according to claim 2, characterized in that, A metal sleeve is fixedly fitted inside the handle housing. The first sealing ring, the second sealing ring, the first rolling bearing, the second rolling bearing, and the rotary snap-fit ​​connector are located inside the metal sleeve. The first sealing ring and the second sealing ring are respectively sealed and fitted with the metal sleeve, and the first rolling bearing and the second rolling bearing are respectively assembled and fitted with the metal sleeve.

6. The disposable planer body according to claim 1, characterized in that, The rotary connector is provided with a plurality of claw blocks arranged apart from each other around the rotation center line of the rotary connector, and the end of each claw block has a tapered structure that gradually decreases in size in the direction away from the rotation adjustment structure.

7. The disposable planer body according to claim 1, characterized in that, The handle housing is provided with a plurality of protruding ribs that are spaced apart from each other in the housing channel and around the center line of the housing channel. The ribs extend in the direction in which the external rotary driver is inserted into the housing channel, and all the ribs are used together to clamp the rotary driver inserted into the housing channel.

8. The disposable planer body according to claim 1, characterized in that, It also includes a flexible protective sleeve that is fitted over the handle housing. One end of the flexible protective sleeve is fixedly connected to the side wall of the handle housing. The position of the handle housing for fixing the flexible protective sleeve defines a first segment of the housing adjacent to the rotation adjustment structure and a second segment of the housing away from the rotation adjustment structure. The other end of the flexible protective sleeve can extend to completely cover the second segment of the housing, or the other end of the flexible protective sleeve can retract to partially expose the second segment of the housing.

9. The disposable planer body according to claim 8, characterized in that, The second section of the housing has multiple recessed grooves that are spaced apart from each other and arranged around the center line of the housing channel, and through holes that connect the recessed grooves to the housing channel. Each recessed groove has multiple through holes that are spaced apart from each other.

10. A planer, comprising a rotary drive, characterized in that, The planer further includes a disposable planer body according to any one of claims 1 to 9, wherein the rotary driver can be inserted into the housing channel from the end face of the handle housing opposite to the rotary connector and engage the rotating end of the rotary driver with the rotary connector.

Images