CN115737070A - Planing device - Google Patents

Abstract

The present disclosure provides a planing device comprising: the planing knife component comprises a tubular outer knife and a tubular inner knife which is arranged in the tubular outer knife and can rotate relative to the tubular outer knife; the operating device comprises a driving motor with a driving shaft, the driving shaft is fixedly connected with the tubular inner cutter, and the driving motor drives the tubular inner cutter to rotate relative to the tubular outer cutter through the driving shaft; the driving motor is provided with a hollow channel, the hollow channel is communicated with the inner channel of the tubular inner cutter, so that solid and/or liquid generated in the planing operation process of the planing cutter assembly can be led out through the inner channel and the hollow channel, and the hollow channel and the inner channel of the tubular inner cutter have the same central axis.

Description

Planing device

Technical Field

The present disclosure relates to the technical field of medical equipment, and particularly to a planing device.

Background

The power system for the endoscope used for the hysteroscopic operation is suitable for the intrauterine operation performed by a trained gynecologist under the hysteroscope, and the removal of the intrauterine tissues comprising the submucosal myoma and the endometrial polyps.

With the development of medical technology and the wide application of endoscopic technology, hysteroscopic surgery is also developed, and the general trend is safer, non-invasive or minimally invasive and more efficient.

In an operation for removing soft tissue (endometrial polyps, uterine fibroids, and other soft tissue in other areas), a plane cutter rotating at a high speed in a reciprocating manner may be used to remove diseased soft tissue, and the removed tissue may be sucked and removed from the internal passages of the plane cutter and the plane cutter by a negative pressure device during removal. The rotation of the planing tool is driven by the planing tool.

The hand tool for planing comprises a handle, a planing tool is installed at the front end of the handle, the planing tool comprises a tubular outer cutter and a tubular inner cutter, the inner cutter is located inside the outer cutter, the inner cutter rotates at a high speed, a suction channel is formed in the hollow part of the planing inner cutter, and the handle is connected with a negative pressure suction source, so that myoma and inner membrane polyp are planed into pieces and sucked out of an external liquid storage bottle.

The rotation of interior sword passes through the inside motor drive of handle, and interior sword rear end needs the drive to connect the motor to need connect the suction channel, the inside suction channel of handle arranges with the motor side by side usually, exists two kinds of modes at present.

For example, patent document CN212234575U discloses a joint planer with a motor shaft coaxial with the inner blade and a handle suction channel offset with respect to the inner blade.

For example, patent document CN103989505B discloses a tissue enucleation planing system with a negative pressure channel offset from the motor shaft, the negative pressure channel being offset from the axis of the inner knife bar.

For another example, patent document US8951274B2 discloses a planing device in which the suction channel is coaxial with the inner blade, and the motor shaft is offset relative to the inner blade and drives the inner blade via a transmission mechanism such as a gear.

The two modes are required to be provided with the suction channel and the motor which are arranged in parallel, the size of the handle is increased, and the length of the suction channel or the transmission device is required to be increased.

In addition, the motor can produce a large amount of heats in the use, need cool down the motor alone.

Disclosure of Invention

The present disclosure provides a planing device, which can be realized by the following technical scheme.

Planing device, comprising: the planing knife assembly comprises a tubular outer knife and a tubular inner knife which is arranged in the tubular outer knife and can rotate relative to the tubular outer knife; the operating device comprises a driving motor with a driving shaft, the driving shaft is fixedly connected with the tubular inner cutter, and the driving motor drives the tubular inner cutter to rotate relative to the tubular outer cutter through the driving shaft; wherein the driving motor has a hollow passage communicating with an inner passage of the tubular inner cutter so that solid and/or liquid substances generated during a planing operation performed by the planing cutter assembly can be drawn out through the inner passage and the hollow passage, and the hollow passage and the inner passage of the tubular inner cutter have the same central axis.

According to the planing device of at least one embodiment of the present disclosure, a radial dimension of the hollow channel of the drive motor is larger than a radial dimension of the inner channel of the tubular inner cutter.

According to the planing device of at least one embodiment of the present disclosure, the tubular inner cutter and the drive shaft of the drive motor are connected via a joint assembly, the joint assembly comprising: a drive shaft joint part fixedly connected with the drive shaft; an inner cutter joint part fixedly connected with the tubular inner cutter; wherein, the drive shaft joint portion with interior sword joint portion is based on the inclined plane cooperation in order to carry out the drive connection.

According to the planing device of at least one embodiment of the present disclosure, the driving shaft joint part and the inner cutter joint part are in driving connection based on a groove-protrusion matching structure.

According to the shaving apparatus of at least one embodiment of the present disclosure, the recess-projection fitting structure of the drive spindle joint part and the inner cutter joint part takes up an axial force generated when the tubular inner cutter rotationally performs a shaving operation.

According to the shaving apparatus of at least one embodiment of the present disclosure, a seal ring is disposed between the drive spindle joint portion and the inner cutter joint portion, the seal ring being disposed within an annular groove formed in an outer surface of the drive spindle joint portion.

According to the shaving apparatus of at least one embodiment of the present disclosure, a radial dimension of the slope surface gradually increases in a direction from the tubular inner cutter to the drive shaft.

According to the shaving apparatus of at least one embodiment of the present disclosure, the seal ring is closer to a first end of the drive coupling portion on an outer surface of the drive coupling portion, and a radial dimension of the first end of the drive coupling portion is smaller than a radial dimension of a second end of the drive coupling portion.

According to a planing device of at least one embodiment of the present disclosure, the joint assembly further comprises: an outer cutter joint part fixedly connected with the tubular outer cutter; the outer cutter joint part is used for fixedly connecting the tubular outer cutter with the operating device.

According to the planing device of at least one embodiment of the present disclosure, the outer cutter head is sleeved outside the drive shaft head and the inner cutter head.

According to the planing device of at least one embodiment of the present disclosure, the outer tool joint part and the inner tool joint part are axially limited through a groove-protrusion matching structure so as to be connected in a relatively rotatable manner.

According to the shaving apparatus of at least one embodiment of the present disclosure, the groove-projection fitting structure of the outer cutter head portion and the inner cutter head portion takes up an axial force generated when the tubular inner cutter rotationally performs a shaving operation.

According to the planing device of at least one embodiment of the present disclosure, the outer tool joint part and the housing structure of the operating device are circumferentially limited by a groove-protrusion matching structure so as to prevent the outer tool joint part from rotating relative to the housing structure of the operating device.

According to the planing device of at least one embodiment of the present disclosure, the drive shaft joint part is arranged inside the inner cutter joint part;

the driving shaft joint part and the inner cutter joint part are both of hollow structures.

According to the planing device of at least one embodiment of the present disclosure, the tubular inner blade is directly and sealingly connected to a drive shaft of the drive motor.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.

Fig. 1 is a schematic view of the entire structure of a shaving apparatus according to an embodiment of the present disclosure.

Fig. 2 is a schematic longitudinal sectional view of the planing device shown in fig. 1.

Fig. 3 is a partial structural view of the operating device of the planing device of fig. 1 with the housing structure removed.

Fig. 4 is a partial structural schematic view of a shaving apparatus according to an embodiment of the present disclosure, and fig. 4 shows a tubular outer cutter and a tubular outer cutter joint portion.

Fig. 5 is a partial structural view of a planing device according to an embodiment of the present disclosure.

Fig. 6 is still another partial structural schematic view of a planing device according to an embodiment of the present disclosure.

Fig. 7 is a schematic structural view of a driving motor of an operating device according to an embodiment of the present disclosure.

Fig. 8-10 illustrate structural schematic diagrams of the shaver assembly according to some embodiments of the present disclosure.

Detailed Description

The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant matter and not restrictive of the disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. Technical solutions of the present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Unless otherwise indicated, the illustrated exemplary embodiments/examples are to be understood as providing exemplary features of various details of some ways in which the technical concepts of the present disclosure may be practiced. Accordingly, unless otherwise indicated, features of the various embodiments may be additionally combined, separated, interchanged, and/or rearranged without departing from the technical concept of the present disclosure.

The use of cross-hatching and/or shading in the drawings is generally used to clarify the boundaries between adjacent components. As such, unless otherwise noted, the presence or absence of cross-hatching or shading does not convey or indicate any preference or requirement for a particular material, material property, size, proportion, commonality between the illustrated components and/or any other characteristic, attribute, property, etc., of a component. Further, in the drawings, the size and relative sizes of components may be exaggerated for clarity and/or descriptive purposes. While example embodiments may be practiced differently, the specific process sequence may be performed in a different order than that described. For example, two processes described consecutively may be performed substantially simultaneously or in reverse order to that described. In addition, like reference numerals denote like parts.

When an element is referred to as being "on" or "on," "connected to" or "coupled to" another element, it can be directly on, connected or coupled to the other element or intervening elements may be present. However, when an element is referred to as being "directly on," "directly connected to" or "directly coupled to" another element, there are no intervening elements present. For purposes of this disclosure, the term "connected" may refer to physically, electrically, etc., and may or may not have intermediate components.

For descriptive purposes, the present disclosure may use methods such as "below 8230; …," "below 8230;" \8230; below 8230; "," below 8230; "," "above 8230" "," "above", "at 8230;", "" above "," higher "and" side (e.g., in "side wall" and the like, to describe one component's relationship to another (or other) component as illustrated in the figures. Spatially relative terms are intended to encompass different orientations of the device in use, operation, and/or manufacture in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "at 8230 \8230;" below "may encompass both an orientation of" above "and" below ". Further, the devices may be otherwise positioned (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, when the terms "comprises" and/or "comprising" and variations thereof are used in this specification, the presence of stated features, integers, steps, operations, elements, components and/or groups thereof are stated but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groups thereof. It is also noted that, as used herein, the terms "substantially," "about," and other similar terms are used as approximate terms and not as degree terms, and as such, are used to interpret inherent deviations in measured values, calculated values, and/or provided values that would be recognized by one of ordinary skill in the art.

Fig. 1 is an overall structural schematic diagram of a shaving apparatus according to an embodiment of the present disclosure. Fig. 2 is a schematic longitudinal sectional view of the planing device shown in fig. 1. Fig. 3 is a partial structural view of the operation device of the planing device of fig. 1 with the housing structure removed. Fig. 4 is a partial structural schematic view of a shaving apparatus according to an embodiment of the present disclosure, and fig. 4 shows a tubular outer cutter and a tubular outer cutter joint portion.

Referring first to fig. 1 and 2, in some embodiments of the present disclosure, a planing device 1000 of the present disclosure comprises: a planing tool assembly 100, the planing tool assembly 100 comprising a tubular outer tool 110 and a tubular inner tool 120 disposed within the tubular outer tool 110 and capable of rotating relative to the tubular outer tool 110; the operating device 200 comprises a driving motor 210 with a driving shaft 2101, the driving shaft 2101 is fixedly connected with the tubular inner knife 120, and the driving motor 210 drives the tubular inner knife 120 to rotate relative to the tubular outer knife 110 through the driving shaft 2101; wherein the driving motor 210 has a hollow channel 2102, the hollow channel 2102 communicates with the inner channel 1201 of the tubular inner cutter 120, so that solid and/or liquid generated during the planing operation of the planing tool assembly 100 can be drawn out through the inner channel 1201 and the hollow channel 2102, and the hollow channel 2102 has the same central axis 1001 as the inner channel 1201 of the tubular inner cutter 120.

The planing device 1000 of the present disclosure can reduce the size of the operation device 200 by providing the drive motor 210 having the hollow passage 2102, the drive motor 210 driving the tubular inner blade 120 to rotate based on the drive shaft 2101, and the hollow passage 2102 of the drive motor 210 communicating with the inner passage 1201 of the tubular inner blade 120 to form the suction passage without additionally providing a separate suction passage in the planing device 1000.

In some embodiments of the present disclosure, the suction channel including the inner channel 1201 of the tubular inner blade 120 and the hollow channel 2102 of the driving motor 210 is disposed flat, without creating a blockage, and the suction is more smooth.

The planing device 1000 of the present disclosure can perform planing operation on the uterine cavity and other parts of the human body, and not only suck out the planed human tissue from the human body, but also suck in liquid such as uterine distention liquid, and the liquid passes through the hollow channel 2102 of the driving motor 210, and can cool the driving motor 210, so that the planing device 1000 of the present disclosure does not need to provide an additional cooling component to cool the driving motor 210, and the geometric size of the operating device 200 can be further reduced.

The front end (first end) of the handling device 200 of the planing device 1000 of the present disclosure is connected to the inner tubular cutter 120 and the outer tubular cutter 110, and the rear end (second end) of the handling device 200 may be connected to a suction source outside the planing device 1000 through the joint 230 and a suction line.

As shown in fig. 1 and 2, the operating device 200 of the planing device 1000 of the present disclosure may have a housing structure 260, the drive motor 210 being disposed within the housing structure 260 of the operating device 200, the drive shaft 2101 of the drive motor 210 extending out of the forward end of the operating device 200 for driving connection with the tubular inner blade 120.

The housing structure 260 may be a combination of two housing portions, which may form a handle structure, and the specific form of the housing structure 260 may be adjusted by those skilled in the art with the benefit of the present disclosure, all of which fall within the scope of the present disclosure.

It should be noted that, referring to fig. 2, the drive shaft 2101 of the drive motor 210 of the present disclosure also has a hollow channel, and the hollow channel of the drive shaft 2101 is a part of the hollow channel 2102 of the drive motor 210.

With continued reference to fig. 2, drive motor 210 of operative device 200 of the present disclosure includes a motor body portion 2103, motor body portion 2103 having a hollow channel, the hollow channel of motor body portion 2103 being part of hollow channel 2102 of drive motor 210.

Referring to fig. 2, in some embodiments of the present disclosure, hollow channel 2102 of drive motor 210 of the present disclosure is comprised of a hollow channel of drive shaft 2101 and a hollow channel of motor body portion 2103.

Also shown in fig. 1-3 is a cable 270. In some embodiments of the present disclosure, a control signal is provided to the drive motor 210 via the cable 270. An operating status signal of the drive motor may also be transmitted to a controller (MCU) external to the planing device 1000 via the cable 270. Power may also be provided to the drive motor 210 via the cable 270.

In some embodiments of the present disclosure, a rechargeable battery may be disposed within the handle structure of the housing structure 260 for providing power to the drive motor 210.

With continued reference to fig. 2, in some embodiments of the present disclosure, it is preferred that the hollow channel 2102 of the drive motor 210 of the manipulation device 200 of the present disclosure has a radial dimension that is greater than the radial dimension of the internal channel 1201 of the tubular inner blade 120.

In some embodiments of the present disclosure, the present disclosure sets the radial dimension of the hollow channel 2102 of the driving motor 210 of the planing device 1000 to be larger than the radial dimension of the internal channel 1201 of the tubular inner blade 120, thereby increasing the contact area of the liquid entering the hollow channel 2102 of the driving motor 210 via the internal channel 1201 of the tubular inner blade 120 and the inner cavity of the driving motor 210 to improve the cooling effect on the driving motor 210.

The hollow channel 2102 of the drive motor 210 and the internal channel 1201 of the tubular inner blade 120 of the present disclosure are each preferably a circular tubular channel.

In some embodiments of the present disclosure, the tubular inner cutter 120 of the planing device 1000 of the present disclosure is connected with the drive shaft 2101 of the drive motor 210 via a joint assembly, referring to the area a circled by a dashed line in fig. 2, the joint assembly of the present disclosure comprises: a drive shaft joint portion 2104 fixedly connected to the drive shaft 2101; an inner blade joint part 1202 fixedly connected with the tubular inner blade 120; wherein the drive shaft coupling portion 2104 and the inner blade coupling portion 1202 are based on a ramped fit for driving connection.

Fig. 5 is a partial structural view of a shaving apparatus 1000 according to an embodiment of the present disclosure, and fig. 6 is another partial structural view of the shaving apparatus 1000 according to an embodiment of the present disclosure.

Fig. 5 shows a motor main body 2103 of the drive motor 210, a drive shaft 2101, the tubular inner blade 120, and an inner blade joint part 1202.

Fig. 6 shows a motor main body 2103, a drive shaft 2101, and a drive shaft joint 2104 of the drive motor 210.

Referring to fig. 6, in some embodiments of the present disclosure, the drive shaft joint portion 2104 described above of the present disclosure is integrally formed at the output end of the drive shaft 2101.

Referring to fig. 5, in some embodiments of the present disclosure, the inner blade joint part 1202 described above in the present disclosure is integrally formed at the connection end of the tubular inner blade 120.

The present disclosure can improve the sealing performance of the joint assembly by setting the drive shaft joint portion 2104 and the inner cutter joint portion 1202 of the joint assembly to be matched based on an inclined surface, so that the liquid flow direction is not parallel to the joint surface of the drive shaft joint portion 2104 and the inner cutter joint portion 1202, that is, the joint surface of the drive shaft joint portion 2104 and the inner cutter joint portion 1202 is an inclined surface.

Referring to fig. 6, the outer surface of the drive shaft coupling portion 2104 is preferably frustoconical, and correspondingly, referring to fig. 2, at least a portion of the inner cavity surface of the inner cutter coupling portion 1202 is also frustoconical to mate with the outer surface of the drive shaft coupling portion 2104 based on a chamfer.

In some embodiments of the present disclosure, referring to fig. 2, 5, and 6, the drive shaft coupling portion 2104 of the coupling assembly of the planing device 1000 of the present disclosure is in driving connection with the inner cutter coupling portion 1202 based on a groove-and-projection mating arrangement.

Referring to fig. 5 and 6, in some embodiments of the present disclosure, the drive spindle connector portion 2104 and the inner knife connector portion 1202 may snap based on a groove and protrusion mating structure to transmit rotational torque.

The groove-protrusion fitting structure may include a plurality of grooves 1203 arranged at one end of the inner blade joint part 1202 (i.e., an end far away from the tubular inner blade 120), the plurality of grooves 1203 being uniformly arranged along a circumferential direction of the inner blade joint part 1202, and a plurality of protrusions 2105 arranged at one end of the drive shaft joint part 2104 (i.e., an end close to the motor main body part 2103), the plurality of protrusions 2105 being uniformly arranged along the circumferential direction of the drive shaft joint part 2104.

It will be appreciated by those skilled in the art, with the benefit of this disclosure, that the arrangement of the mating of the drive spindle sub 2104 and the female protrusion of the inner knife sub 1202 can be modified and remain within the scope of this disclosure.

The mating arrangement of the drive shaft coupling portion 2104 of the coupling assembly of the planing device 1000 of the present disclosure and the recess-projection of the inner cutter coupling portion 1202 takes up the axial forces generated by the tubular inner cutter 120 when rotationally performing the planing operation.

In some embodiments of the present disclosure, a seal ring 240 is disposed between the drive spindle coupling portion 2104 and the inner cutter coupling portion 1202 of the coupling assembly of the planing device 1000 of the present disclosure, the seal ring 240 being disposed within an annular groove formed in an outer surface of the drive spindle coupling portion 2104. By providing the seal ring 240, the pumped liquid can be prevented from leaking between the drive spindle coupling portion 2104 and the inner cutter coupling portion 1202. The sealing ring 240 may be made of rubber, which is not particularly limited in this disclosure.

Referring to fig. 2 and 6, in some embodiments of the present disclosure, the radial dimension of the bevel gradually increases in the direction from the tubular inner blade 120 to the drive shaft 2101. The planing device 1000 of the present disclosure further prevents the pumped liquid from leaking between the drive spindle joint portion 2104 and the inner cutter joint portion 1202 by the above-described structural design of the inclined surface.

Referring to fig. 6, in accordance with a preferred embodiment of the present disclosure, the seal ring 240 described above in the present disclosure is closer to the first end (i.e., the front end) of the drive coupling portion 2104 on the outer surface of the drive coupling portion 2104, and the radial dimension of the first end of the drive coupling portion 2104 is smaller than the radial dimension of the second end (i.e., the rear end) of the drive coupling portion 2104.

Referring to fig. 2 and 4, in some embodiments of the present disclosure, the joint assembly of the planing device 1000 of the present disclosure further comprises: an outer blade joint portion 1101 fixedly connected to the tubular outer blade 110; the outer blade joint portion 1101 is used to fixedly connect the tubular outer blade 110 to the operation device 200.

In some embodiments of the present disclosure, the tubular outer blade 110 and the outer blade joint portion 1101 may be integrally formed, e.g., injection molded as a unitary structure.

Referring to fig. 2 and 4, in some embodiments of the present disclosure, the outer blade adapter portion 1101 and the inner blade adapter portion 1202 of the adapter assembly of the planing device 1000 of the present disclosure are axially restrained for relative rotational connection by a groove and protrusion mating arrangement.

Referring to fig. 4, in some embodiments of the present disclosure, the groove-protrusion mating structure of the outer blade joint part 1101 and the inner blade joint part 1202 includes a plurality of protrusions 1102 arranged on the outer blade joint part 1101, and the plurality of protrusions 1102 are uniformly arranged in a circumferential direction along an inner wall surface of the outer blade joint part 1101.

Referring to fig. 5, the groove-protrusion mating structure of the outer blade joint part 1101 and the inner blade joint part 1202 further includes a groove 1204 disposed on the outer wall surface of the inner blade joint part 1202, and the groove 1204 may be an annular groove.

Those skilled in the art, having the benefit of this disclosure, will appreciate that the configuration of the mating recesses and protrusions of the outer tool joint portion 1101 and the inner tool joint portion 1202 may be modified and fall within the scope of the present disclosure.

Referring to fig. 4 and 5, the groove-protrusion mating structure of the outer cutter joint portion 1101 and the inner cutter joint portion 1202 of the joint assembly of the planing device 1000 of the present disclosure takes up the axial force generated when the tubular inner cutter 120 rotationally performs a planing operation.

The outer blade joint part 1101 and the housing structure of the operating device 200 described above of the present disclosure may be circumferentially limited by a groove and protrusion mating structure to prevent rotation of the outer blade joint part 1101 relative to the housing structure of the operating device 200.

Referring to fig. 2, in some embodiments of the present disclosure, the drive shaft coupling portion 2104 of the coupling assembly of the planing device 1000 of the present disclosure is disposed within the inner cutter coupling portion 1202; the drive shaft coupling portion 2104 and the inner cutter coupling portion 1202 are both hollow.

In some other embodiments of the present disclosure, the drive spindle joint portion 2104 of the present disclosure and the inner knife joint portion 1202 are interchangeable, i.e., the inner knife joint portion is disposed within the drive spindle joint portion and the outer knife joint portion is connected to the drive spindle joint portion, the outer knife joint portion being axially positioned in the drive spindle joint portion. The technical solutions of the present disclosure can also be used by those skilled in the art to adjust the matching manner of the driving shaft joint portion, the inner cutter joint portion and the outer cutter joint portion described in the present disclosure, and all of them fall into the protection scope of the present disclosure.

In still other embodiments of the present disclosure, the tubular inner blade 120 of the planing device 1000 of the present disclosure is directly sealingly connected to the drive shaft 2101 of the drive motor 210.

Fig. 7 is a schematic configuration diagram of a driving motor of an operating device according to an embodiment of the present disclosure. The structure of the fitting 230 is shown in fig. 7 for connection to a suction line.

As can also be seen from fig. 7, the drive shaft 2101 of the drive motor 210 of the present disclosure is a hollow structure.

Fig. 8-10 illustrate structural schematic views of the shaver assembly according to some embodiments of the present disclosure.

Preferably, in some embodiments of the present disclosure, the tubular inner blade 120 and the tubular outer blade 110 of the planing tool assembly 100 described above are both round tubular blades.

Referring to fig. 8 to 10, in some embodiments of the present disclosure, the first end of the tubular inner cutter 120 has a side opening to serve as an inner cutter blade edge, and the second end of the tubular inner cutter 120 is driven by a driving shaft 2101 of the driving motor 210; the first end of the tubular outer cutter 110 has a side opening as an outer cutter blade, and the second end of the tubular outer cutter 110 is detachably fixedly connected with the housing structure 260 of the operation device 200 via the outer cutter joint part 1101 described above.

Wherein the side opening of the first end of the tubular inner blade 120 has the same or substantially the same axial position as the side opening of the first end of the tubular outer blade 110.

The specific structure of the inner tubular cutter 120 and the outer tubular cutter 110 can be adjusted by those skilled in the art in light of the disclosure, and all such modifications are within the scope of the disclosure.

In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example" or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/modes or examples and features of the various embodiments/modes or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present disclosure, "plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.

It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.

Claims (10)

1. A planing device, comprising:

the planing knife assembly comprises a tubular outer knife and a tubular inner knife which is arranged in the tubular outer knife and can rotate relative to the tubular outer knife; and

the operating device comprises a driving motor with a driving shaft, the driving shaft is fixedly connected with the tubular inner cutter, and the driving motor drives the tubular inner cutter to rotate relative to the tubular outer cutter through the driving shaft;

wherein the driving motor has a hollow passage communicating with an inner passage of the tubular inner cutter so that solid and/or liquid substances generated during a planing operation performed by the planing cutter assembly can be drawn out through the inner passage and the hollow passage, and the hollow passage and the inner passage of the tubular inner cutter have the same central axis.

2. The planing device of claim 1 wherein the hollow channel of said drive motor has a radial dimension greater than the radial dimension of the internal channel of said tubular inner blade.

3. A planing device according to claim 1 or 2, wherein said tubular inner blade is connected to a drive shaft of said drive motor via a joint assembly comprising:

a drive shaft joint part fixedly connected with the drive shaft; and

an inner cutter joint part fixedly connected with the tubular inner cutter;

the driving shaft joint part and the inner cutter joint part are matched on the basis of an inclined plane to be in driving connection, and the driving shaft joint part and the inner cutter joint part are in driving connection on the basis of a groove and protrusion matching structure;

the drive shaft joint part is arranged in the inner cutter joint part;

the driving shaft joint part and the inner cutter joint part are both of hollow structures.

4. The planing device of claim 3 wherein said recess and projection engagement of said drive shaft coupling portion and said inner cutter coupling portion provides for the axial forces generated by said tubular inner cutter during rotationally performing planing operations.

5. The planing device of claim 3, wherein a sealing ring is disposed between said drive shaft coupling portion and said inner cutter coupling portion, said sealing ring being disposed within an annular groove formed in an outer surface of said drive shaft coupling portion;

wherein a radial dimension of the slope is gradually increased in a direction from the tubular inner cutter to the drive shaft.

6. The planing device of claim 5 wherein said sealing ring is on an outer surface of said drive shaft coupling portion closer to a first end of said drive shaft coupling portion, said first end of said drive shaft coupling portion having a radial dimension less than a radial dimension of a second end of said drive shaft coupling portion.

7. The planing device as recited in claim 3, wherein the adapter assembly further comprises:

an outer cutter joint part fixedly connected with the tubular outer cutter;

the outer cutter joint part is used for fixedly connecting the tubular outer cutter with the operating device;

the outer cutter joint part is sleeved outside the driving shaft joint part and the inner cutter joint part;

the outer cutter joint part and the inner cutter joint part are axially limited through a groove and protrusion matching structure so as to be connected in a relatively rotatable manner.

8. The planing device of claim 7 wherein said groove-and-projection engagement of said outer tool coupling portion with said inner tool coupling portion provides for the axial forces generated by said tubular inner tool when rotationally performing the planing operation.

9. A planing device as claimed in claim 7, in which the outer tool nose portion is circumferentially restrained from rotation relative to the housing structure of the operating device by a groove and projection arrangement.

10. A planing device as claimed in claim 1 or 2, characterized in that the tubular inner blade is directly in sealing connection with a drive shaft of the drive motor.

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