Power handle, electric operation cutting device and cutter assembly

Abstract

The utility model provides a power handle, an electric operation cutting device and a cutter assembly, and belongs to the technical field of operation equipment. The power handle comprises a handle body and a driving motor arranged in the handle body, an inner pipe is arranged in a rotor of the driving motor, the inner pipe and the rotor are coaxially arranged, the inner pipe rotates along with the rotor, a cutter mounting channel is arranged in the handle body, and the cutter mounting channel is located at the front end of the inner pipe; the cutter assembly comprises an outer cutter tube and an inner cutter tube; the power handle is matched with the cutter assembly, when the cutter assembly is inserted into the cutter installation channel and connected with the power handle, the handle body is connected with the outer cutter pipe, the inner pipe is at least coaxial with the rear end of the inner cutter pipe, and the front end of the inner pipe is directly communicated with the rear end of the inner cutter pipe and is in transmission connection with the rear end of the inner cutter pipe. The tissue cut in the inner knife tube can be directly transferred into the inner tube, and the structure is simple. Meanwhile, the driving motor does not need to be biased, so that the overall structure of the electric operation cutting handle and the electric operation cutting device is simplified, and the product cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of surgical equipment, in particular to a power handle, an electric surgical cutting device and a tool assembly. Background Art

[0002] Electric surgical cutting tools usually include an outer blade tube and an inner blade tube sleeved in the outer blade tube. A cutting opening is set at the front end of the outer blade tube, so that the cutting window at the front end of the inner blade tube can leak out. When the inner blade tube rotates, the cutting edge formed by the edge of the cutting window of the inner blade tube can cut the tissue to complete the operation. During the operation, the tail end of the inner blade tube can be connected to the output channel, and the output channel is connected to the negative pressure device to suck the cut tissue to facilitate subsequent detection such as pathological classification.

[0003] In some existing electric surgical cutting devices, the drive motor and the inner knife tube are coaxially arranged, the output channel and the inner knife tube are offset, and the output channel is connected to the tail end of the inner knife tube through a switching mechanism. In some other existing electric surgical cutting tools, the output channel and the inner knife tube are coaxially arranged, the rotation axis of the drive motor and the extension direction of the inner knife tube are offset, and the drive motor needs to drive the inner knife tube through an additional transmission mechanism such as a gear set. When the output channel and the inner knife tube are offset, the inner knife tube needs to be rotated and needs to avoid the drive motor, so the switching mechanism structure of the output channel is usually more complicated. When the rotation axis of the drive motor is offset from the extension direction of the inner knife tube, additional transmission mechanisms such as gear sets will also increase the size and cost of the electric surgical cutting tool, resulting in the complex structure and high cost of the existing electric surgical cutting tools. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a power handle, an electric surgical cutting device and a tool assembly, which are used to solve the problems of complex structure of the electric surgical cutting tool in the prior art.

[0005] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides a power handle adapted to a tool assembly, wherein the tool assembly comprises an outer tool tube and an inner tool tube rotatably inserted into the outer tool tube;

[0006] The power handle comprises a handle body and a driving motor arranged in the handle body, an inner tube is arranged in the rotor of the driving motor, the inner tube is arranged coaxially with the rotor and rotates with the rotor, a tool installation channel is arranged in the handle body, and the tool installation channel is located at the front end of the inner tube;

[0007] Wherein, when the tool assembly is inserted into the tool mounting channel to be connected to the power handle, the handle body is connected to the outer tool tube, the inner tube is at least coaxial with and drivingly connected to the rear end of the inner tool tube, and the inner tube and the inner tool tube are communicated through abutting or plugging of the front end of the inner tube against the rear end of the inner tool tube.

[0008] Optionally, the inner tube has a hollow channel extending along the axial direction of the inner tube. When the power handle is connected to the tool assembly, the rear end of the inner tool tube is plugged into the hollow channel.

[0009] Optionally, the inner diameter of the inner tube is larger than the inner diameter of the inner tool tube.

[0010] Optionally, when the power handle is connected to the tool assembly, a connection gap is formed between the inner tube and the inner tool tube, and a sealing structure for sealing the connection gap is provided between the inner tube and the inner tool tube.

[0011] Optionally, a torque transmission structure is provided between the inner tube and the inner tool tube. When the power handle is connected to the tool assembly, the inner tube drives the inner tool tube to rotate through the torque transmission structure.

[0012] Optionally, the tool assembly further includes a connection sleeve fixedly sleeved outside the outer tool tube. When the power handle is connected to the tool assembly, the connection sleeve is inserted into the tool mounting channel in a matching manner.

[0013] The present utility model further provides an electric surgical cutting device, which is characterized by including the power handle according to any one of the above and a tool assembly adapted to the power handle.

[0014] Optionally, when the power handle is connected to the tool assembly, a connection gap is formed between the inner tube and the inner tool tube, and a sealing structure for sealing the connection gap is provided between the inner tube and the inner tool tube. A first connecting member is provided on the rear end of the inner tool tube, and a second connecting member is provided on the front end of the inner tube. The sealing structure includes a sealing ring disposed between the first connecting member and the second connecting member, and the sealing ring seals the connection gap.

[0015] Optionally, when the power handle is connected to the tool assembly, the inner tube and the inner tool tube are plugged together, and the connection gap is an annular gap;

[0016] The sealing structure further includes a sealing cavity formed between the first connecting member and the second connecting member. The sealing cavity is communicated with the connection gap, and the sealing ring is disposed in the sealing cavity and plugs the connection gap.

[0017] Optionally, a torque transmission structure is provided between the first connecting member and the second connecting member. When the power handle is connected to the tool assembly, the inner tube drives the inner cutter tube to rotate through the torque transmission structure.

[0018] The present utility model further provides a tool assembly, which is adapted to any one of the above-mentioned power handles. The tool assembly includes:

[0019] An outer cutter tube;

[0020] An inner cutter tube rotatably disposed in the outer cutter tube;

[0021] A first connecting member disposed at the rear end of the inner cutter tube. The inner cutter tube receives rotational power from the drive motor of the power handle through the first connecting member. The first connecting member rotates together with the inner cutter tube, and the inner cutter tube has an extending section extending rearward out of the first connecting member.

[0022] Optionally, when the power handle is connected to the tool assembly, a connection gap is formed between the inner tube and the inner cutter tube. A sealing structure for sealing the connection gap is provided between the inner tube and the inner cutter tube. A second connecting member is provided at the front end of the inner tube. The sealing structure includes a sealing ring disposed between the first connecting member and the second connecting member, and the sealing ring seals the connection gap;

[0023] The sealing structure further includes a sealing cavity formed between the first connecting member and the second connecting member. The sealing cavity communicates with the connection gap. The sealing ring is disposed in the sealing cavity and blocks the connection gap.

[0024] As described above, the present utility model has the following beneficial effects: Since when the power handle is connected to the tool assembly, the handle body is connected to the outer cutter tube, and the inner tube is at least coaxial with and drivingly connected to the rear end of the inner cutter tube, the inner tube and the inner cutter tube are connected by abutting or inserting the front end of the inner tube against the rear end of the inner cutter tube. Therefore, when the power handle is connected to the tool assembly, the tissue cut in the inner cutter tube can be directly transferred into the inner tube without an additional transfer structure, and the structure is simple. At the same time, the drive motor does not need to be offset, which is beneficial to simplifying the overall structure of the power handle and the electric surgical cutting device and reducing the product cost. The power handle and the tool assembly as described above are components of the electric surgical cutting device, providing a structural basis for directly transferring the tissue cut in the inner cutter tube into the inner tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic cross-sectional structure diagram of the electric surgical cutting device in the embodiment of the present utility model;

[0026] Figure 2Schematic cross-sectional structure diagram of the power handle in the embodiment of the present utility model;

[0027] Figure 3 Schematic cross-sectional structure diagram of the tool assembly in the embodiment of the present utility model;

[0028] Figure 4 Schematic structure diagram of the second connecting member in the embodiment of the present utility model;

[0029] Figure 5 Schematic cross-sectional structure diagram at the second connecting member in the embodiment of the present utility model;

[0030] Figure 6 Schematic cross-sectional structure diagram of the connection between the inner tube and the inner cutter tube in the embodiment of the present utility model.

[0031] Explanation of reference numerals:

[0032] Drive motor 1, handle body 2, tool installation channel 3, retaining ball 4, discharge pipe 5, anti-disengagement structure 6, sealing ring 7;

[0033] Power handle 10, inner tube 11, second connecting member 12, key 13;

[0034] Tool assembly 20, outer cutter tube 21, inner cutter tube 22, cutting opening 23, first connecting member 24, keyway 25, connecting sleeve 26, anti-disengagement groove 27. Detailed implementation manners

[0035] The following specific embodiments illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification.

[0036] It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the limited conditions under which the present utility model can be implemented. Therefore, they do not have technical essential significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present utility model.

[0037] In the description of this specification, it should be noted that "rear" refers to the orientation of the instrument or component close to the operator, and "front" refers to the orientation of the instrument or component away from the operator.

[0038] Please refer to Figures 1 to 6, this embodiment provides a power handle 10, and the power device is adapted to the tool assembly 20. The power handle 10 includes a handle body 2 and a drive motor 1 disposed within the handle body 2. An inner tube 11 is disposed within the rotor of the drive motor 1. The inner tube 11 is coaxially disposed with the rotor and rotates together with the rotor. The tool assembly 20 includes an outer tool tube 21 and an inner tool tube 22 rotatably disposed within the outer tool tube 21. A tool installation channel 3 is disposed within the handle body 2, and the tool installation channel 3 is located at the front end of the inner tube 11. Among them, the power handle 10 is adapted to the tool assembly 20 for installing the tool assembly 20.

[0039] The tool group assembly 20 is installed within the power handle 10 by inserting it into the tool installation channel 3 of the power handle 10. The power handle 10 realizes the cutting operation by driving the rotation of the inner tool tube 22 of the tool assembly 20.

[0040] When the power handle 10 is inserted into the tool installation channel 3 and the power handle 10 is connected to the tool assembly 20, that is, when the tool assembly 20 is installed on the power handle 10, the handle body 2 is connected to the outer tool handle corresponding to the outer tool tube 21. The inner tube 11 is at least coaxially and drivingly connected to the rear end of the inner tool tube 22, and the inner tube 12 and the inner tool tube 22 are communicated by abutting or inserting the front end of the inner tube 11 against the rear end of the inner tool tube 22.

[0041] It is worth mentioning that the above "tool assembly" can be a planer. A cutting opening is provided at the front end of the outer tool tube of the planer, so that the cutting window at the front end of the inner tool tube can be exposed. When the inner tool tube rotates, the cutting edge formed by the edge of the cutting window of the inner tool tube can cut the tissue, and the tissue enters the inner tool tube through the cutting window and is extracted through the inner tube 11; the above "tool assembly" can also be a drill bit with a tissue channel (not shown in the figure). A cutting head is provided at the front end of the inner tool tube of the drill bit, and a tissue inlet is provided on the side wall of the inner tool tube. At least part of the cutting head is exposed at the front end of the outer tool tube. When the inner tool tube rotates, the cutting head grinds the tissue for tissue cutting, and the tissue enters the inner tool tube through the tissue inlet and is extracted through the inner tube.

[0042] It should be noted that there are various ways for the above "connection between the handle body 2 and the outer tool tube 21". For example, in some embodiments, the outer tool tube 21 is fixedly connected to the handle body 2. In other embodiments, an adjustment structure for adjusting the rotation direction of the outer tool tube 21 is configured on the handle body 2 to make the outer tool tube 21 rotate relative to the inner tool tube 22 to realize the adjustment of the cutting orientation.

[0043] It should be noted that there are at least two possible implementation manners for the above "the inner tube 11 is at least coaxial with the rear end of the inner cutter tube 22": For example, in some embodiments, the central axis of the cutter assembly 20 is divided into two sections, the front and the rear, and a bending angle is formed between the central axes of the two sections. The inner cutter tube 22 can be rotated within the curved outer cutter tube 21 by adopting a structure such as a multi-layer flexible tube. At this time, the inner tube 11 is coaxial with the rear end of the inner cutter tube 22, but the inner tube 11 is not coaxial with the front end of the inner cutter tube 22; in this embodiment, the cutter assembly 20 adapted to the power handle 10 is linear, and the inner cutter tube 22 is coaxially arranged with the outer cutter tube 21, so that the entire inner cutter tube 22 and the inner tube 11 are coaxial.

[0044] It should also be noted that the above-mentioned or following power handles can all be applied to an electric surgical cutting device, and the electric surgical cutting device further includes a correspondingly adapted cutter assembly.

[0045] In this embodiment, since the front end of the inner tube 11 is in driving connection with the rear end of the inner cutter tube 22, the driving motor 1 can drive the inner cutter tube 22 to rotate within the outer cutter tube 21 through the inner tube 11 to complete the cutting of tissues. At the same time, since the front end of the inner tube 11 is in communication with the rear end of the inner cutter tube 22, substances such as tissues cut off by the inner cutter tube 22 and waste liquid generated by flushing the cutting site can flow into the inner tube 11 so as to be discharged by the inner tube 11. Neither the driving motor 1 nor the inner tube 11 needs to be offset, which is beneficial to simplifying the overall structure of the power handle 10 and the electric surgical cutting device and reducing the overall cost of the product. At the same time, the inner cutter tube 22 and the inner tube 11 are directly in communication without additional transfer structures, which is beneficial to simplifying the overall structure of the electric surgical cutting device.

[0046] As Figures 1 to 3 shown, in this embodiment, the inner tube 11 has a hollow channel extending along the axial direction of the inner tube 11. When the power handle 10 is connected to the cutter assembly 20, the rear end of the inner cutter tube 22 is inserted into the hollow channel, so that the inner channel of the inner cutter tube 22 is directly in communication with the hollow channel within the inner tube 11. In this way, the inner diameter of the inner tube 11 is larger, and under the action of negative pressure, the waste liquid and tissue fluid within the inner cutter tube 22 can directly enter the inner tube 11 and be discharged, which is beneficial to reducing the possibility of blockage when substances such as tissues and waste liquid in the inner cutter tube 22 pass through the communication part between the inner cutter tube 22 and the inner tube 11.

[0047] In this embodiment, the inner diameter of the inner tube 11 is greater than that of the inner cutter tube 22 and less than, that is, the radial dimension of the hollow channel in the inner cutter tube 22 is less than the radial dimension of the hollow channel in the inner tube 11. Thus, along the suction direction from front to back, the overall suction channel formed by the inner cutter tube and the inner tube 11 presents a channel that is smaller at the front and larger at the back, which is conducive to avoiding blockage. Of course, it is not excluded that the inner diameter of the inner cutter tube 22 gradually increases in the front-to-back direction and / or the inner diameter of the inner tube 11 gradually increases in the front-to-back direction, both of which are conducive to avoiding blockage. Usually, the inner diameter corresponding to each cross-section of the inner cutter tube 22 is equal, and the inner diameter corresponding to each cross-section of the inner tube 11 is equal.

[0048] In the electric surgical cutting device of this embodiment, when the power handle 10 is connected to the tool assembly 20, a connection gap is formed between the inner tube 11 and the inner cutter tube 22, and there is a sealing structure for sealing the connection gap between the inner tube 11 and the inner cutter tube 22.

[0049] In this embodiment, a torque transmission structure is provided between the inner tube 11 and the inner cutter tube 22. When the power handle 10 is connected to the tool assembly 20, the inner tube 11 drives the inner cutter tube 22 to rotate through the torque transmission structure. Specifically, as Figure 4 , Figure 5 , Figure 6 shown, in the corresponding electric surgical device, a first connector 24 is provided at the rear end of the inner cutter tube 22, and a second connector 12 is provided at the front end of the inner tube 11. The connection gap is formed between the first connector 24 and the second connector 12. The sealing structure includes a sealing ring 7 provided between the first connector 24 and the second connector 12, and the sealing ring 7 seals the connection gap. Of course, this application does not exclude the way of directly transmitting torque through the inner tube 11 and the inner cutter tube 22.

[0050] In the existing tool assembly, the rear end of the first connector 24 is further back than the rear end of the inner cutter tube. Using the inner cavity of the first connector 24 as a part of the suction channel, in order to achieve that when the power handle 10 is connected to the tool assembly 20, the rear end of the inner cutter tube 22 can be inserted into the hollow channel to reduce the blockage of substances such as tissues and waste liquid in the inner cutter tube 22 when passing through the connection between the inner cutter tube 22 and the inner tube 11, the tool assembly 20 is improved in this embodiment, and the tool assembly 20 adopts the following structure:

[0051] As Figure 3As shown, in this embodiment, the tool assembly includes an outer tool tube, an inner tool tube, and a first connecting member. The inner tool tube is rotatably disposed in the outer tool tube. The first connecting member 24 is provided at the rear end of the inner tool tube 22. The inner tool tube 22 receives rotational power from the drive motor 1 of the power handle 10 through the first connecting member 24. The first connecting member 24 rotates together with the inner tool tube 22. The inner tool tube 22 has an extending section that extends backward out of the first connecting member 24. In such a tool assembly, since the extending section extends out of the first connecting member 24, the inner tool tube can directly extend into the inner tube 11, thereby reducing the possibility of blockage at the connection between the inner tool tube 22 and the inner tube 11.

[0052] In some embodiments, when the handle 10 of the electric surgical cutting device is connected to the tool assembly 20, the end faces of the inner tool tube 22 and the inner tube 11 are butted (abutted), and the connection gap includes the gap between the end face of the inner tool tube and the end face of the inner tube 11. In other embodiments, when the power handle 10 is connected to the tool assembly 20, the inner tube 11 is inserted into the inner tool tube 22, and the connection gap is an annular gap. For example, in this embodiment, the inner tool tube 22 is inserted into the inner tube 11, and the connection gap is the gap between the inner wall of the inner tube 11 and the outer wall of the inner tool tube 22. In this embodiment, the sealing structure further includes a sealing cavity formed between the first connecting member 24 and the second connecting member 12. The sealing cavity communicates with the connection gap. The sealing ring 7 is disposed in the sealing cavity and seals the connection gap.

[0053] As Figures 3 to 6 shown, in this embodiment, a torque transmission structure is provided between the first connecting member 24 and the second connecting member 12. When the power handle 10 is connected to the tool assembly 20, the inner tube 11 drives the inner tool tube 22 to rotate through the torque transmission structure. In some embodiments, the torque transmission structure can be a toothed structure, that is, end teeth that mesh with each other are provided between the first connecting member 24 and the second connecting member 12 to achieve the transmission of torque between the inner tube 11 and the inner tool tube 22. In other embodiments, a mating tenon and rivet are respectively provided on the first connecting member 24 and the second connecting member 12. The tenon and rivet are non-circular, and the torque is transmitted through the tenon and rivet to achieve the torque transmission between the first connecting member and the second connecting member, thereby achieving the torque transmission between the inner tube 11 and the inner tool tube 22. As Figures 4 to 6 shown, in this embodiment, a groove 25 is provided on the first connecting member 24, and a key 13 that cooperates with the groove 25 is provided on the second connecting member 12. The torque between the inner tube 11 and the inner tool tube 22 is transmitted through the groove 25 and the key 13.

[0054] As Figure 2As shown, in this embodiment, the tool mounting channel 3 is coaxial with the inner tube 11. The tool assembly 20 further includes a connecting sleeve 26 fixedly sleeved outside the outer tool tube 21. When the power handle 10 is connected to the tool assembly 20, the connecting sleeve 26 is inserted into the tool mounting channel 3 in a matching manner. Of course, in the actual implementation process, the central axis of the tool mounting channel 3 may also have a certain offset relative to the central axis of the inner tube 11. However, whether there is an offset or not, when the tool assembly 20 is inserted into the tool mounting channel 3, it is ensured that the inner tube 11 is at least coaxial with the rear end of the inner tool tube 22.

[0055] A discharge pipe 5 is provided at the rear end of the handle body 2. The rear end of the inner tube 11 is communicated with the discharge pipe 5, and tissues, waste liquid, etc. in the inner tube 11 are discharged through the discharge pipe 5. An anti-disconnection structure 6 is provided at the rear end of the discharge pipe 5 to facilitate reliable connection with the discharge hose. In this embodiment, a bead 4 that can move radially is provided in the handle body 2, and an anti-disconnection groove 27 that cooperates with the bead 4 is provided at the position corresponding to the bead 4 on the connecting sleeve 26. The bead 4 and the anti-disconnection groove 27 cooperate to realize axial limitation of the tool assembly 20.

[0056] In some embodiments, an elastic member such as a spring is provided between the bead 4 and the handle body 2. The elastic member abuts against the bead 4, provides a force acting radially toward the inside of the tool mounting channel 3 for the bead 4, and makes the bead 4 protrude from the tool mounting channel 3. When the tool assembly 20 is inserted into the tool mounting channel 3, the elastic member presses the bead 4 into the anti-disconnection groove 27 of the tool assembly 20 to prevent the tool assembly 20 from accidentally coming out. When the tool assembly 20 is pulled out and the pulling force is sufficient, the anti-disconnection groove 27 pushes the bead 4 to compress the elastic member, so that the bead 4 disengages from the anti-disconnection groove 27 and the tool assembly 20 is pulled out. In other embodiments, the bead 4 can be made of an elastic material, and the tool assembly 20 compresses the bead 4 during the process of entering and exiting the tool mounting channel 3 to realize axial limitation of the tool assembly 20.

[0057] In this embodiment, a gap is left between the inner tool tube 22 and the outer tool tube 21, and this gap is communicated with the cutting opening 23. Normal saline can be supplied to the cutting opening 23 through the gap between the inner tool tube 22 and the outer tool tube 21 to wash the cutting area during the operation.

[0058] In summary, in the present utility model, since an inner tube 11 is provided inside the rotor of the drive motor 1, and the inner tube 11 is coaxially arranged with the rotor and rotates together with the rotor, when the power handle 10 is connected to the tool assembly 20, the handle body 2 is connected to the outer cutter tube 21, the inner tube 11 is at least coaxial with the rear end of the inner cutter tube 22, and the front end of the inner tube 11 is directly communicated with and drivingly connected to the rear end of the inner cutter tube 22. Therefore, when the power handle 10 is connected to the tool assembly 20, the tissue cut in the inner cutter tube 22 can be directly transferred into the inner tube 11 without an additional transfer structure, and the structure is simple. At the same time, the drive motor 1 does not need to be offset, which is beneficial to simplifying the overall structure of the power handle 10 and the electric surgical cutting device and reducing the product cost. As described above, the power handle and the tool assembly in this embodiment are components of the electric surgical cutting device, providing a structural basis for directly transferring the tissue cut in the inner cutter tube into the inner tube.

[0059] The above embodiments merely illustrate the principles and effects of the present utility model, rather than limiting the present utility model. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present utility model. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present utility model should still be covered by the claims of the present utility model.

Claims

1. A power handle adapted to a tool assembly, the tool assembly including an outer tool tube and an inner tool tube rotatably disposed in the outer tool tube, characterized in that, the power handle includes a handle body and a drive motor disposed in the handle body, an inner tube is disposed in the rotor of the drive motor, the inner tube is coaxially disposed with the rotor and rotates together with the rotor, a tool installation channel is disposed in the handle body, and the tool installation channel is located at the front end of the inner tube; wherein, when the tool assembly is inserted into the tool installation channel to be connected to the power handle, the handle body is connected to the outer tool tube, the inner tube is at least coaxially and drivingly connected to the rear end of the inner tool tube, and the inner tube and the inner tool tube are communicated by abutting or inserting the front end of the inner tube against the rear end of the inner tool tube.

2. The power handle according to claim 1, wherein: The inner tube has a hollow channel extending along the axis of the inner tube. When the power handle is connected to the tool assembly, the rear end of the inner tool tube is inserted into the hollow channel.

3. The power handle according to claim 2, wherein: The inner diameter of the inner tube is larger than the inner diameter of the inner tool tube.

4. The power handle according to claim 1, wherein: When the power handle is connected to the tool assembly, a connection gap is formed between the inner tube and the inner tool tube, and a sealing structure for sealing the connection gap is provided between the inner tube and the inner tool tube.

5. The power handle according to claim 1, wherein: A torque transmission structure is provided between the inner tube and the inner tool tube. When the power handle is connected to the tool assembly, the inner tube drives the inner tool tube to rotate through the torque transmission structure.

6. The power handle according to any one of claims 1-5, characterized in that: The tool assembly further includes a connection sleeve fixedly sleeved outside the outer tool tube. When the power handle is connected to the tool assembly, the connection sleeve is inserted into the tool installation channel in a matching manner.

7. An electric surgical cutting device, characterized in that, Including the power handle according to any one of claims 1-6 and a tool assembly adapted to the power handle.

8. The electric surgical cutting device according to claim 7, characterized in that: When the power handle is connected to the tool assembly, a connection gap is formed between the inner tube and the inner tool tube, and a sealing structure for sealing the connection gap is provided between the inner tube and the inner tool tube. A first connecting member is provided on the rear end of the inner tool tube, and a second connecting member is provided on the front end of the inner tube. The sealing structure includes a sealing ring disposed between the first connecting member and the second connecting member, and the sealing ring seals the connection gap.

9. The electric surgical cutting device according to claim 8, wherein: When the power handle is connected to the tool assembly, the inner tube and the inner tool tube are inserted into each other, and the connection gap is an annular gap; The sealing structure further includes a sealing cavity formed between the first connecting member and the second connecting member. The sealing cavity is communicated with the connection gap. The sealing ring is disposed in the sealing cavity and blocks the connection gap.

10. The electric surgical cutting device according to claim 8, characterized in that: A torque transmission structure is provided between the first connecting member and the second connecting member. When the power handle is connected to the tool assembly, the inner tube drives the inner tool tube to rotate through the torque transmission structure.

11. A cutting tool assembly, characterized in that, The tool assembly is adapted to the power handle according to any one of claims 1-6, and the tool assembly includes: an outer tool tube; an inner tool tube rotatably disposed in the outer tool tube; The first connecting piece is arranged at the rear end of the inner cutter tube. The inner cutter tube receives rotational power from the drive motor of the power handle through the first connecting piece. The first connecting piece rotates together with the inner cutter tube. The inner cutter tube has an extending section that extends backward out of the first connecting piece.

12. The tool assembly according to claim 11, wherein: When the power handle is connected to the tool assembly, a connection gap is formed between the inner tube and the inner cutter tube. A sealing structure for sealing the connection gap is provided between the inner tube and the inner cutter tube. A second connecting piece is arranged at the front end of the inner tube. The sealing structure includes a sealing ring arranged between the first connecting piece and the second connecting piece. The sealing ring seals the connection gap. The sealing structure further includes a sealing cavity formed between the first connecting piece and the second connecting piece. The sealing cavity is communicated with the connection gap. The sealing ring is arranged in the sealing cavity and blocks the connection gap.

Images