Motor module, medical handle and operation power device

Abstract

The utility model provides a motor module, a medical handle and an operation power device, and belongs to the technical field of electric operation equipment. Comprising a motor, the motor comprises a motor shell, a rotor and an inner pipe, the rotor is rotatably arranged in the motor shell, the inner pipe and the rotor are coaxially arranged in the rotor and rotate along with the rotor, the end of the inner pipe penetrates out of the front end and / or the rear end of the motor shell and forms an extending section, and a rotating gap is formed between the outer wall of the extending section and the motor shell. The extending section is sleeved with a sealing ring, and the sealing ring makes sealing contact with the outer wall of the extending section and is blocked on the path from the outer end of the extending section to the rotating gap. According to the utility model, the sealing ring is in sealing contact with the outer wall of the extension section and is blocked on the path from the outer end of the extension section to the rotating gap, the sealing ring can block fluid dissipated at the extension section, the fluid is prevented from flowing into the motor shell through the rotating gap, and the product reliability is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric surgical devices, and particularly relates to a motor module, a medical handle and a surgical power device. Background Art

[0002] In minimally invasive surgery, surgical power devices are widely used. A surgical power device consists of a compatible handle and at least one cutting tool. A motor is arranged inside the handle, and the power output by the motor is transmitted to the cutting tool to provide the power required during the surgical process. For example, after an ablation handle is assembled with a compatible ablation device, the motor inside the ablation handle transmits power to the inner cutter tube of the ablation device.

[0003] An aspiration channel communicating with the ablation handle is usually arranged inside the ablation handle. In the existing ablation handle, the aspiration channel is arranged beside the axis of the motor, and the axis of the aspiration channel or the motor is coaxial with the cutter installation channel of the ablation tool: when the cutter installation channel inside the handle is coaxial with the motor, the aspiration channel is offset from the cutter installation channel; when the aspiration channel inside the handle is coaxial with the cutter installation channel of the ablation tool, the axis of the motor is offset from the cutter installation channel. Both of these two ablation handles will result in a larger handle size and a more complex structure.

[0004] If a motor with a hollow channel integrated inside is adopted and the internal channel of the motor is used as the aspiration channel, the handle size can be reduced. However, since waste liquid, cut tissue, etc. pass through the channel during the surgical process, how to prevent waste liquid, cut tissue, etc. from entering the motor has become an urgent problem to be solved. Summary of the Utility Model

[0005] In view of the above-mentioned disadvantages of the prior art, the purpose of the present utility model is to provide a motor module, a medical handle and a surgical power device to prevent waste liquid, cut tissue, etc. from entering the motor.

[0006] To achieve the above purpose and other related purposes, the present utility model provides a motor module, which is arranged in a motor module installation cavity of a handle housing. The motor module includes a motor, and the motor includes a motor housing and an inner tube rotatably arranged inside the motor housing. The end of the inner tube penetrates through the front end and / or the rear end of the motor housing and forms an extending section, and there is a rotational gap between the outer wall of the extending section and the motor housing. A sealing assembly is sleeved on the extending section, and the sealing assembly is in sealing contact with the outer wall of the extending section and the inner wall of the motor module installation cavity respectively, and...

[0007] Optionally, the sealing assembly includes:

[0008] A first component, which is sleeved outside the protruding section and at least covers the corresponding end of the motor housing. The first component is cooperatively arranged in the motor mounting cavity, and an annular sealing cavity communicating with the rotation gap is formed between the inner wall of the first component and the motor housing;

[0009] A first sealing ring, which is arranged in the annular sealing cavity. The inner side wall of the first sealing ring is in sealing contact with the outer wall of the inner tube, and the outer side wall of the first sealing ring is in sealing contact with the inner wall of the first component.

[0010] Optionally, the sealing assembly further includes a second sealing ring, which is arranged on the first component and is used to seal the gap between the inner wall of the motor module mounting cavity and the first component.

[0011] Optionally, the first sealing ring includes a main sealing portion and a secondary sealing portion integrally arranged. The main sealing portion is arranged radially between the secondary sealing portion and the outer wall of the inner tube. The inner side wall of the main sealing portion is in sealing contact with the outer wall of the inner tube, and the secondary sealing portion is located between the first component and the motor housing.

[0012] Optionally, the first component presses the secondary sealing portion between the first component and the motor housing along the axis direction of the motor, and the main sealing portion is in sealing contact with the first component.

[0013] Optionally, the first sealing ring includes a first sealing lip and a second sealing lip. The first sealing lip is in sealing contact with the outer wall of the inner tube, and the first sealing lip extends circumferentially along the first sealing ring and is arranged around the rotation axis of the first sealing ring for one week; the second sealing lip is in sealing contact with the inner wall of the first component, and the second sealing lip extends circumferentially along the first sealing ring and is arranged around the rotation axis of the first sealing ring for one week.

[0014] Optionally, the first sealing ring further includes a connecting portion connecting the first sealing lip and the second sealing lip, and the first sealing lip, the connecting portion and the second sealing lip enclose an annular structural groove with an opening.

[0015] Optionally, an elastic support is arranged in the annular structural groove. The elastic support presses the first sealing lip against the outer wall of the inner tube in the radial direction of the sealing ring and presses the second sealing lip against the inner wall of the first component.

[0016] Optionally, the opening direction of the annular structural groove faces away from the motor housing.

[0017] The present utility model also provides a medical handle, which includes a handle housing and the motor module as described in any one of the above. A motor module installation cavity is provided in the handle housing, and the motor module is arranged in the motor module installation cavity.

[0018] The present utility model also provides a surgical power device, which includes the medical handle as described above and a tool assembly adapted to the medical handle. The tool assembly includes an outer cutter tube and an inner cutter tube rotatably arranged in the outer cutter tube. When the tool assembly is adaptively connected to the handle, the outer cutter tube is connected to the housing, and the inner tube is in transmission connection with and communicated with the inner cutter tube.

[0019] As described above, a motor module, a medical handle and a surgical power device of the present utility model have the following beneficial effects: Since a sealing assembly is sleeved on the protruding section, and the sealing assembly is in sealed contact with the outer wall of the protruding section and the motor module installation cavity respectively, the sealing assembly can block waste liquid, cut tissues, etc. escaping from the protruding section, avoid waste liquid, cut tissues, etc. flowing into the interior of the motor housing through the rotation gap, and can also block waste liquid, cut tissues from flowing into the interior of the motor housing and the housing along the gap between the outer wall of the motor housing and the motor installation cavity, which is beneficial to improving the reliability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic cross-sectional structure diagram of the surgical power device in the embodiment of the present utility model;

[0021] Figure 2 It is a schematic cross-sectional structure diagram of the motor module in the embodiment of the present utility model;

[0022] Figure 3 It is a partially enlarged schematic cross-sectional structure diagram of the front end of the motor in the embodiment of the present utility model;

[0023] Figure 4 It is a partially enlarged schematic cross-sectional structure diagram of the rear end of the motor in the embodiment of the present utility model;

[0024] Figure 5 It is a partially sectional schematic structure diagram of the sealing ring in the embodiment of the present utility model;

[0025] Figure 6 It is a partially sectional schematic structure diagram of the sealing cavity in the embodiment of the present utility model;

[0026] Figure 7 It is a partially sectional schematic structure diagram of the first positioning portion in the embodiment of the present utility model;

[0027] Figure 8 It is a partially sectional schematic structure diagram of the second positioning portion in the embodiment of the present utility model;

[0028] Figure 9This is a schematic cross-sectional structure diagram of the handle housing in the embodiment of the present utility model.

[0029] Explanation of reference numerals: motor 1, inner tube 2, first sealing ring 3, first member 4, second member 5, anti-detachment barbs 6, connecting member 7, protruding section 8, outer cutter tube 9, cutter assembly 10, inner cutter tube 11, rotation gap 12, sealing cavity 13, main space 14, secondary space 15, second sealing ring 16, motor module installation cavity 20, annular structure groove 30, first sealing lip 31, second sealing lip 32, main sealing portion 33, secondary sealing portion 34, elastic support 35, second positioning portion 40, first positioning portion 50. Detailed implementation manners

[0030] 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.

[0031] 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 limiting conditions for the implementation of the present utility model. Therefore, they do not have any technical essence. 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 the technical content disclosed by the present utility model can cover.

[0032] 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.

[0033] Please refer to Figures 1 to 9 , this embodiment provides a motor module, including a motor 1, and the motor 1 includes a motor housing and an inner tube 2 rotatably arranged in the motor housing. Specifically, a rotor is arranged in the motor, and the inner tube 2 is coaxially arranged in the rotor with the rotor and rotates with the rotor.

[0034] Wherein, the end of the inner tube 2 can protrude from the front end of the motor housing, or can protrude from the rear end of the motor housing, or both ends of the inner tube 2 respectively protrude from the front end and the rear end of the motor housing. The part of the inner tube 2 protruding from the motor housing forms a protruding section 8, and there is a rotation gap 12 between the outer wall of the protruding section 8 and the motor housing, so that the inner tube 2 can rotate flexibly. A sealing assembly is sleeved on the protruding section 8, and the sealing assembly is in sealing contact with the outer wall of the protruding section 8 and the inner wall of the motor module installation cavity 20 respectively.

[0035] In the present utility model, since a sealing assembly is sleeved on the extending section 8, and the sealing assembly is in sealing contact with the outer wall of the extending section 8 and the motor module installation cavity 20 respectively. Since the inner tube 2 is usually used to convey waste liquid, cut tissues, etc., the end of the inner tube 2 needs to be connected to other conveying pipelines. Waste liquid, tissues, etc. are likely to escape from the connection between the end of the inner tube 2 and other conveying pipelines. The first sealing ring 3 can block the escaping waste liquid and tissues, reducing the probability of waste liquid, tissues, etc. entering the interior of the motor housing through the rotation gap 12. In addition, the sealing assembly can also block the waste liquid and cut tissues from flowing into the interior of the motor housing along the gap between the outer wall of the motor housing and the motor installation cavity, which is beneficial to improving the service life of the motor 1.

[0036] In a possible implementation manner, with reference to Figures 1 to 8 , the sealing assembly includes a first component 4 and a first sealing ring 4. The first component 4 is sleeved outside the extending section 8 and at least covers the corresponding end of the motor housing. The first component 4 is arranged in the motor installation cavity in a matching manner. An annular sealing cavity 13 communicating with the rotation gap 12 is formed between the inner wall of the first component 4 and the motor housing. The first sealing ring 3 is arranged in the annular sealing cavity 13. The inner side wall of the first sealing ring 3 is in sealing contact with the outer wall of the extending section 8 of the inner tube 2, and the outer side wall of the first sealing ring 3 is in sealing contact with the inner wall of the first component 4.

[0037] As Figures 1 to 4 , in this embodiment, both ends of the inner tube 2 pass through the front end and the rear end of the motor housing respectively, and extending sections 8 are formed at the front end and the rear end of the motor housing respectively. Sealing rings 3 are sleeved on the two extending sections 8 respectively. The extending section 8 at the front end of the motor housing can be docked with the inner cutter tube 11 of the tool assembly 10, that is, the docking position of the inner tube 2 and the inner cutter tube 11 is outside the motor housing, which is beneficial to preventing escaping waste liquid, tissues, etc. from entering the interior of the motor housing. Correspondingly, the extending section 8 at the rear end of the motor housing can be docked with the output pipeline structure for outputting waste liquid and tissues, and the docking position of the inner tube 2 and the output pipeline structure is also outside the motor housing, which is also beneficial to preventing escaping waste liquid, tissues, etc. from entering the interior of the motor housing.

[0038] With reference to Figures 1 to 9 , the sealing assembly further includes a second sealing ring 16. The second sealing ring 16 is arranged on the first component 4 and is used to seal the gap between the inner wall of the motor module installation cavity 20 and the first component 4. In the illustrated embodiment, the second sealing ring 16 is only arranged on the extending section 8 at the front end. In actual implementation, a similar structure can also be adopted at the rear end.

[0039] In some embodiments, the first sealing ring 3 includes a main sealing portion 33 and a secondary sealing portion 34. The main sealing portion 33 and the secondary sealing portion 34 are integrally provided, that is, the main sealing portion 33 and the secondary sealing portion 34 are connected as a whole, and there is no gap at the connection between the two, so as to prevent liquid from flowing between the main sealing portion 33 and the secondary sealing portion 34. The main sealing portion 33 is radially disposed between the secondary sealing portion 34 and the outer wall of the inner tube 2, and the inner side wall of the main sealing portion 33 is in sealing contact with the outer wall of the inner tube 2 to prevent liquid from flowing between the inner side wall of the main sealing portion 33 and the outer wall of the inner tube 2. The secondary sealing portion 34 is located between the first member 4 and the motor housing, and plays a role in blocking the dissipated waste liquid and tissues.

[0040] Specifically, the first member 4 presses the secondary sealing portion 34 between the first member 4 and the motor housing along the axial direction of the motor 1, that is, the secondary sealing portion 34 is in sealing contact with the first member 4 and the motor housing respectively. The secondary sealing body seals the gap between the first member 4 and the motor housing, preventing waste liquid and the like from passing through the secondary sealing portion 34 through the gap between the first member 4 and the motor housing, and enhancing the sealing effect on the rotating gap 12. At the same time, the main sealing portion 33 is also in sealing contact with the first member 4 to prevent waste liquid and the like from passing over the main sealing portion 33.

[0041] Specifically, as Figure 5 shown, in this embodiment, the first sealing ring 3 includes a first sealing lip 31 and a second sealing lip 32. The first sealing lip 31 is in sealing contact with the outer wall of the inner tube 2, and the first sealing lip 31 extends circumferentially along the first sealing ring 3 and is arranged around the axis of rotation of the first sealing ring 3 for one week; the second sealing lip 32 is in sealing contact with the inner wall of the first member 4, and the second sealing lip 32 extends circumferentially along the first sealing ring 3 and is arranged around the axis of rotation of the first sealing ring 3 for one week. The first sealing lip 31 and the second sealing lip 32 have relatively low structural strength and are easy to deform. Therefore, they can fit well with other components and improve the sealing effect.

[0042] Specifically, the first sealing ring 3 further includes a connecting portion connecting the first sealing lip 31 and the second sealing lip 32, and the first sealing lip 31, the connecting portion and the second sealing lip 32 enclose an annular structural groove 30 with an opening. The annular structural groove 30 can reduce the strength of the sealing ring 3 in the radial direction, enabling the sealing ring 3 to better fit with the inner wall of the first member 4 and the outer wall of the inner tube 2 in the radial direction respectively, and is also beneficial to the installation of the sealing ring 3.

[0043] In this embodiment, an elastic support 35 is disposed in the annular structure groove 30. The elastic support 35 presses the first sealing lip 31 against the outer wall of the inner tube 2 in the radial direction of the sealing ring 3, and presses the second sealing lip 32 against the inner wall of the first member 4, respectively increasing the fitting degree of the first sealing lip 31 and the second sealing lip 32, and enhancing the sealing effect. At the same time, when the first sealing lip 31 and the second sealing lip 32 are worn, the elastic support 35 can still press the remaining parts of the first sealing lip 31 and the second sealing lip 32 against their respective corresponding components, playing a role in compensating for wear. In this embodiment, the opening direction of the annular structure groove 30 faces away from the motor housing, which is beneficial to avoid the curling of the main sealing part 33 of the sealing lip when it is sleeved on the protruding section 8, thereby facilitating the reduction of the assembly difficulty of the sealing ring 3.

[0044] Specifically, the elastic support 35 is usually a metal elastic member such as a metal spring. A plastic coating body such as silica gel can be coated on the outer surface of the metal elastic member to protect the metal elastic member and provide the weather resistance and service life of the metal spring.

[0045] In some embodiments, the motor module includes a first member 4 and also includes a second member 5. The first member 4 and the second member 5 are respectively sleeved outside the inner tube 2. The second member 5 is connected to the motor housing, and the first member 4 is directly or indirectly connected to the motor housing. The second member 5 has a second positioning portion 40 positioned on one end of the motor housing. The first member 4 has a first positioning portion 50, and the first positioning portion 50 is located on the side of the second positioning portion 40 facing away from the motor housing. The first positioning portion 50, the second positioning portion 40, and the outer wall of the inner tube 2 enclose an annular sealing cavity 13. The sealing ring 3 is disposed in the annular sealing cavity 13, and the sealing ring 3 is in sealing contact with the first positioning portion 50, the second positioning portion 40, and the outer wall of the inner tube 2 respectively.

[0046] As Figures 6 to 8 shown, in this embodiment, the first positioning portion 50 of the first member 4 at the front end of the motor module is a positioning step, and the second positioning portion 40 of the second member 5 at the front end of the motor module is a positioning boss. The convex surface of the positioning boss faces the motor housing. In this embodiment, the second member 5 is frustum-shaped, and the positioning boss is arranged around the axis of the second member 5 for one week. The surface of the second member 5 facing the motor housing is the convex surface of the positioning boss. The convex surface cooperates with the motor housing to position the second member 5, and the step surface of the first positioning portion 50 cooperates with the surface of the second member 5 facing away from the motor housing to position the first member 4.

[0047] In this embodiment, the first sealing ring 3 cooperates with the first component 4 and the second component 5 to form a sealing structure for sealing the rotating gap 12. The first sealing ring 3 does not need to be in direct contact with the motor housing, reducing the machining accuracy requirements of the motor housing and facilitating the reduction of the overall cost of the motor 1. Both the first component 4 and the second component 5 are positioned and connected to the motor housing, defining the relative position between the annular sealing cavity 13 and the motor housing, and further defining the relative position between the first sealing ring 3 and the motor housing to ensure the sealing effect.

[0048] Specifically, as Figure 6 shown, in this embodiment, the annular accommodation space includes a main space 14 and a secondary space 15 that are connected and communicate with each other. The main space 14 is arranged in the radial direction between the secondary space 15 and the outer wall of the inner tube 2. The sealing ring 3 includes a main sealing portion 33 and a secondary sealing portion 34 that are integrally provided. The main sealing portion 33 is arranged in the main space 14, and the main sealing portion 33 is at least in sealing contact with the outer wall of the inner tube 2 to prevent external liquid from flowing into the rotating gap 12 through the gap between the main sealing portion 33 and the inner tube 2. In this embodiment, the outer side surface of the main sealing portion 33 is also in sealing contact with the inner wall of the main space 14 to prevent external liquid from flowing over the first sealing ring 3 from the outer side surface of the main sealing portion 33 and into the rotating gap 12. The secondary sealing portion 34 is located in the secondary space 15, and the secondary sealing portion 34 is in sealing contact with the first positioning portion 50 and the second positioning portion 40 respectively to prevent external liquid from flowing over the outer edge of the secondary sealing portion 34 and into the rotating gap 12.

[0049] The main space 14 accommodates the main sealing portion 33, and the secondary space 15 accommodates the secondary sealing portion 34, which respectively play a role in clamping and restricting the main sealing portion 33 and the secondary sealing portion 34 to prevent the sealing ring 3 from flipping and moving. The main sealing portion 33 and the secondary sealing portion 34 play a secondary sealing role to improve the sealing effect.

[0050] As Figure 1 and Figure 2 shown, this embodiment also provides a medical handle, which includes a handle housing and the motor module as described in any one of the above. An installation cavity 20 for the motor module is provided in the handle housing, and the motor module is arranged in the handle housing.

[0051] As Figure 1 and Figure 2 shown, this embodiment also provides a surgical power device, which includes the above-mentioned medical handle and a tool assembly 10 adapted to the medical handle. The tool assembly 10 includes an outer cutter tube 9 and an inner cutter tube 11 rotatably arranged in the outer cutter tube 9. When the tool assembly 10 is adaptively connected to the handle, the outer cutter tube 9 is connected to the housing, and the inner tube 2 is in transmission connection and communication with the inner cutter tube 11.

[0052] In this embodiment, a connecting member 7 is provided at the front end of the inner tube 2. The inner tube 2 communicates with the rear end of the inner cutter tube 11 through the connecting member 1. Transmission structures such as keys and end face teeth can be provided on the connecting member 1, and the inner tube 2 transmits power to the inner cutter tube through the connecting member 7.

[0053] In this embodiment, first members 4 are provided at both the front end and the rear end of the motor module. The front end and the rear end of the inner tube 2 extend out of the motor housing and respectively form extending segments 8. The extending segment 8 at the front of the inner tube 2 passes through the first structural member at the front end of the motor module and is in driving connection and communication with the rear end of the inner cutter tube 11 in the tool assembly 10, so as to receive substances such as tissues cut off and waste liquid generated by flushing in the inner cutter tube 11. The first structural member at the rear end of the motor module is tubular, and the extending segment 8 at the rear of the inner tube 2 is inserted into the front end of the first structural member at the rear end of the motor module. The rear end of the first structural member at the rear end of the motor module passes through the handle housing for connection with a subsequent discharge pipe. Anti - detachment barbs 6 are provided on the rear end of the first structural member at the rear end of the motor module to prevent the discharge pipe from slipping off.

[0054] As described above, in a motor module, a medical handle and a surgical power device of this embodiment, since the inner tube 2 is hollow, its internal cavity is the hollow channel for fluid passage in the motor 1, and the fluid in the inner tube 2 flows in or out through the extending segment 8. Since a sealing assembly is sleeved on the extending segment 8, the sealing assembly is in sealing contact with the outer wall of the extending segment 8 and the inner wall of the installation cavity 20 of the motor module, and blocks the path from the outer end of the extending segment 8 to the rotation gap 12. The sealing ring 3 can block the fluid escaping from the extending segment 8, prevent the fluid from flowing into the interior of the motor housing through the rotation gap 12, and can also block the waste liquid and cut tissues from flowing into the interior of the motor housing along the gap between the outer wall of the motor housing and the motor installation cavity, which is beneficial to improving the reliability of the motor 1.

[0055] The above - mentioned embodiments merely illustrate the principles and effects of the present invention, rather than limiting the present invention. Any person familiar with this technology can modify or change the above - mentioned embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A motor module is disposed in a motor module installation cavity of a handle housing, and is characterized in that, The motor module includes: a motor, the motor includes a motor housing and an inner tube rotatably disposed within the motor housing, an end of the inner tube extends out of the front end and / or the rear end of the motor housing to form an extended section, and there is a rotational clearance between the outer wall of the extended section and the motor housing; a sealing assembly is sleeved on the extended section, and the sealing assembly is in sealing contact with the outer wall of the extended section and the inner wall of the motor module installation cavity respectively.

2. The motor module according to claim 1, characterized in that: The sealing assembly includes: A first member, the first member is sleeved outside the extended section and at least covers the corresponding end of the motor housing, the first member is disposed in the motor installation cavity, and an annular sealing cavity communicating with the rotational clearance is formed between the inner wall of the first member and the motor housing; A first sealing ring, disposed in the annular sealing cavity, the inner side wall of the first sealing ring is in sealing contact with the outer wall of the extended section, and the outer side wall of the first sealing ring is in sealing contact with the inner wall of the first member.

3. The motor module according to claim 2, characterized in that, The sealing assembly further includes a second sealing ring, the second sealing ring is disposed on the first member, and the second sealing ring is used to seal the gap between the inner wall of the motor module installation cavity and the first member.

4. The motor module according to claim 2, wherein: The first sealing ring includes a main sealing portion and a secondary sealing portion integrally provided, the main sealing portion is disposed radially between the secondary sealing portion and the outer wall of the inner tube, the inner side wall of the main sealing portion is in sealing contact with the outer wall of the inner tube, and the secondary sealing portion is located between the first member and the motor housing.

5. The motor module according to claim 4, wherein: The first member presses the secondary sealing portion between the first member and the motor housing along the axial direction of the motor, and the main sealing portion is in sealing contact with the first member.

6. The motor module according to claim 2, wherein: The first sealing ring includes: A first sealing lip, in sealing contact with the outer wall of the inner tube, the first sealing lip extends circumferentially around the first sealing ring and is arranged around the axis of rotation of the first sealing ring for one week; A second sealing lip, in sealing contact with the inner wall of the first member, the second sealing lip extends circumferentially around the first sealing ring and is arranged around the axis of rotation of the first sealing ring for one week.

7. The motor module according to claim 6, wherein: The first sealing ring further includes a connecting portion connecting the first sealing lip and the second sealing lip, and the first sealing lip, the connecting portion and the second sealing lip enclose an annular structural groove with an opening.

8. The motor module according to claim 7, characterized in that: An elastic support is disposed in the annular structural groove, and the elastic support presses the first sealing lip against the outer wall of the inner tube in the radial direction and presses the second sealing lip against the inner wall of the first member.

9. The motor module according to claim 7, wherein: The opening direction of the annular structural groove faces away from the motor housing.

10. A medical handle, characterized in that, It includes a handle housing and the motor module according to any one of claims 1 to 9, a motor module installation cavity is provided in the handle housing, and the motor module is disposed in the motor module installation cavity.

11. A surgical power device, characterized in that: Comprising a medical handle as described in claim 10 and a tool assembly adapted to the medical handle, the tool assembly including an outer cutter tube and an inner cutter tube rotatably disposed within the outer cutter tube. When the tool assembly is adaptively connected to the handle, the outer cutter tube is connected to the housing, and the inner tube is in driving connection and communication with the inner cutter tube.

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