Motor assembly, medical handle and operation power equipment

Abstract

The utility model discloses a motor assembly, medical handle and operation power equipment, relates to medical instrument technical field, the motor assembly comprises a motor and a rear fixed sleeve, the motor comprises a cylindrical casing and a hollow rotating shaft rotatably arranged in the cylindrical casing, the rear end of the cylindrical casing is provided with a connecting section; the rear fixing sleeve is detachably connected with the connecting section, an interval space is formed between the inner wall of the rear fixing sleeve and the outer wall of the hollow rotating shaft, at least one component is arranged between the rear end of the hollow rotating shaft and the rear fixing sleeve, and the interval space is used for containing the component. According to the technical scheme provided by the utility model, the problems that the complexity of the shell is increased and the assembly difficulty is possibly increased when parts are arranged at the rear end of the hollow shaft of the conventional hollow shaft motor are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a motor component, a medical handle and a surgical power device. Background Art

[0002] The hollow shaft of a hollow shaft motor provides a channel for the transfer of cut tissue or fluids, offering high space utilization. However, existing hollow shaft motors have limitations in their application. This is primarily due to the smooth outer wall of the hollow shaft. When a hollow shaft motor is used in a medical handle, if parts need to be positioned on the hollow shaft at the rear end of the motor, a positioning structure must be provided on the handle housing to locate these parts. This results in a complex handle housing structure. Furthermore, these parts need to fit together with both the handle and the housing, which, due to the limited internal space of the housing, can make assembly difficult. Utility Model Content

[0003] The main purpose of the present utility model is to propose a motor assembly, a medical handle and a surgical power device, aiming to solve the problem that the arrangement of components at the rear end of the hollow shaft of the existing hollow shaft motor increases the complexity of the shell and may also increase the difficulty of assembly.

[0004] To achieve the above-mentioned purpose, the present invention provides a motor assembly, which includes:

[0005] The motor comprises a cylindrical housing and a hollow shaft rotatably disposed in the cylindrical housing, wherein a connecting section is provided at a rear end of the cylindrical housing, and a rear end of the hollow shaft extends out of the connecting section;

[0006] A rear fixing sleeve is detachably connected to the connecting section, and a spacing space is formed between the inner wall of the rear fixing sleeve and the outer wall of the rear end of the hollow rotating shaft. At least one component is provided between the rear end of the hollow rotating shaft and the rear fixing sleeve, and the spacing space is used to accommodate the component.

[0007] In one embodiment, at least a portion of the connecting section is provided with threads, and the rear fixing sleeve is threadedly connected to the connecting section.

[0008] In one embodiment, the at least one component further includes a thrust bearing, a limiting portion is protruded from the inner wall of the rear fixed sleeve, and the thrust bearing is disposed between the limiting portion and the motor.

[0009] In one embodiment, the motor is provided with a positioning groove at one end of the connecting section, and the motor assembly further includes a positioning sleeve, which is sleeved on the outer periphery of the hollow rotating shaft and located in the positioning groove, and the first limiting portion and the positioning sleeve are respectively in contact with the thrust bearing.

[0010] In one embodiment, the at least one component further includes an outlet pipe, the outlet pipe including a mounting portion extending into the interval space and connected to the rear fixing sleeve, the outlet pipe is mounted on a side of the rear fixing sleeve facing away from the motor, and the interior of the hollow rotating shaft is connected to the interior of the outlet pipe.

[0011] In one embodiment, the at least one component further includes a sealing member disposed in the separation space, and the mounting portion and the outer wall of the hollow rotating shaft are in sealing contact with the sealing member respectively.

[0012] In one embodiment, a limiting portion is protruded from the inner wall of the rear fixing sleeve, and the limiting portion, the inner wall of the outlet pipe and the outer wall of the hollow rotating shaft together form an installation space for installing the sealing member.

[0013] The present invention also provides a medical handle, which comprises:

[0014] a handle body, forming a cavity therein; and

[0015] A motor assembly is disposed in the cavity, and the motor assembly is the motor assembly described in any of the above embodiments.

[0016] In one embodiment, the medical handle further includes a locking sleeve, which is disposed at the end of the handle body to limit the motor assembly in the cavity.

[0017] The present invention also provides a surgical power device, which includes a matching medical handle and a medical knife. The medical handle is the medical handle described in any of the above embodiments.

[0018] In the technical solution of the present invention, the motor assembly includes a motor and a rear fixing sleeve. The motor is provided with a connecting section at the rear end of the cylindrical casing, so that the rear fixing sleeve can be detachably installed on the connecting section, which can facilitate the maintenance and replacement of the motor, and other necessary components can also be arranged on the outside of the rear fixing sleeve, thereby avoiding direct arrangement on the motor and reducing the complexity of the motor casing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0020] Figure 1 This is a structural diagram of an embodiment of a motor assembly provided by the present utility model;

[0021] Figure 2 A schematic diagram of the partial structure of an embodiment of a motor assembly provided by the present utility model;

[0022] Figure 3 An exploded view of the structure of an embodiment of a motor assembly provided by the present utility model;

[0023] Figure 4 A schematic structural diagram of a motor in another embodiment of a motor assembly provided by the present invention;

[0024] Figure 5 A schematic structural diagram of a rear fixing sleeve in another embodiment of a motor assembly provided by the present invention;

[0025] Figure 6 This is a structural schematic diagram of an embodiment of the medical handle provided by the present utility model.

[0026] Description of Figure Numbers:

[0027] 100. Motor assembly; 1. Motor; 11. Cylindrical housing; 111. Connecting section; 112. Positioning groove; 12. Hollow shaft; 2. Rear fixing sleeve; 21. Positioning portion; 3. Thrust bearing; 4. Positioning sleeve; 5. Output pipe; 6. Seal; 7. Locking sleeve;

[0028] 200. Medical handle; 01. Handle body.

[0029] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection of the present invention.

[0031] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0032] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0033] The outer walls of the hollow shafts in existing medical handles are smooth. If parts need to be positioned on the hollow shaft at the rear end of the motor, a positioning structure needs to be set on the shell of the medical handle to position these parts. This will make the structure of the handle shell more complicated. In addition, these parts need to cooperate with the handle and the shell at the same time, and are limited by the internal space of the shell, which may lead to greater assembly difficulty.

[0034] The utility model provides a motor assembly.

[0035] See also Figures 1 to 3 In one embodiment of the present invention, the motor assembly 100 includes:

[0036] The motor 1 includes a cylindrical housing 11 and a hollow shaft 12 rotatably disposed within the cylindrical housing 11. A connecting section 111 is provided at the rear end of the cylindrical housing 11, and a rear end of the hollow shaft 12 extends out of the connecting section 111.

[0037] The rear fixing sleeve 2 is detachably connected to the connecting section 111. A spacing space is formed between the inner wall of the rear fixing sleeve 2 and the outer wall of the rear end of the hollow rotating shaft 12. At least one component is provided between the rear end of the hollow rotating shaft 12 and the rear fixing sleeve 2. The spacing space is used to accommodate the component.

[0038] In the technical solution of the present invention, a connecting section 111 is provided at the rear end of the cylindrical casing 11, so that the rear fixing sleeve 2 can be detachably installed on the connecting section 111, and other necessary components can be provided in the interval space between the rear fixing sleeve 2 and the hollow rotating shaft 12, thereby avoiding the need to provide a positioning structure inside the handle shell, which can reduce the complexity inside the handle shell and reduce the difficulty of installation.

[0039] For example, when the component to be installed outside the hollow shaft 12 is a sealing ring, the sealing ring can be installed in the interval space before the motor assembly 100 is installed in the handle housing. It is no longer limited by the internal space of the handle housing, and the operating space is larger. After the motor assembly 100 is installed, it is installed into the internal space of the handle housing. The installation of the sealing ring does not need to be coordinated with the handle housing, and the operation difficulty is reduced.

[0040] Specifically, in this solution, there is no specific limitation on the shape of the rear fixing sleeve 2, as long as it can be sleeved on the outside of the front docking section and can limit the installed components (such as bearings and seals, etc.).

[0041] In the embodiments of the present invention, please refer to Figure 4 At least part of the connecting section 111 is provided with threads, and the rear fixing sleeve 2 is threadedly connected to the connecting section 111. The threaded connection is convenient for the disassembly and installation of the rear fixing sleeve 2, and can also effectively prevent the loosening of components due to vibration or external force during the operation; in addition, the threaded connection can also provide a good sealing effect, preventing liquid, gas or microorganisms during the operation from entering the interior of the cylindrical casing 11, and protecting the internal circuit and mechanical structure of the motor 1 from contamination.

[0042] In the embodiments of the present invention, please refer to Figure 3 and Figure 5 The "at least one component" mentioned above includes the thrust bearing 3. A stopper 21 is protruding from the inner wall of the rear fixed sleeve 2. The stopper 21 can be an annular plate protruding from the interior of the fixed sleeve 2. The thrust bearing 3 is disposed between the stopper 21 and the motor 1. In this structure, the thrust bearing 3 can axially limit the rear fixed sleeve 2. In particular, when the rear fixed sleeve 2 is threadedly connected to the connecting section 111, the thrust bearing 3 can prevent the rear fixed sleeve 2 from rotating to a certain extent, thereby preventing the rear fixed sleeve 2 from axial movement.

[0043] In the embodiments of the present invention, please refer to Figure 3 The motor 1 has a positioning groove 112 at one end of the connecting section 111. The motor assembly 100 also includes a positioning sleeve 4, which is sleeved around the outer periphery of the hollow shaft 12 and located within the positioning groove 112. The positioning groove 112 and the positioning sleeve 4 cooperate with each other, and the first limiting portion 21 and the positioning sleeve 4 respectively abut against the thrust bearing 3. In this structure, regardless of whether the end face of the motor is flat or not, the positioning sleeve 4 can provide a positioning surface for the installation of the thrust bearing 3, thereby achieving reliable installation of the rear fixing sleeve 2.

[0044] In the embodiments of the present invention, please refer to Figure 3The "at least one component" mentioned above includes a discharge tube 5, which includes a mounting portion that extends into the space and connects to the rear fixing sleeve 2. The discharge tube 5 is mounted on the side of the rear fixing sleeve 2 facing away from the motor 1, and the interior of the hollow shaft 12 communicates with the interior of the discharge tube 5. Thus, the coaxial arrangement of the discharge tube 5, hollow shaft 12, and tool allows for the effective discharge and aspiration of fluids and cut tissue generated during surgery, minimizing contamination of the surgical field and maintaining a clear surgical field of view. The provision of the discharge tube 5 simplifies the management of aspirated materials during surgery, eliminating the need for additional manpower or equipment for fluid removal.

[0045] In the embodiments of the present invention, please refer to Figure 3 , the "at least one component" in the above description also includes a seal 6 provided in the spacing space, and the outer walls of the mounting portion and the hollow shaft 12 are in sealing contact with the seal 6 respectively. The provision of the seal 6 can prevent moisture, dust and other particulate matter from entering the interior of the cylindrical housing 11, helps to keep the interior of the motor assembly 100 clean, and protects the motor 1 from external environmental factors, thereby extending the service life of the motor. It should be noted that the seal 6 can be an ordinary sealing ring or a lip-shaped sealing ring, etc., as long as it can isolate the interior of the cylindrical housing 11 from the outside.

[0046] In the embodiments of the present invention, please refer to Figure 3 A limiting portion 21 is convexly provided on the inner wall of the rear fixing sleeve 2. The limiting portion 21, the inner wall of the outlet pipe 5 and the outer wall of the hollow rotating shaft 12 together form an installation space for installing the seal 6, providing a precise position for the installation of the seal 6, ensuring the sealing effect of the seal 6, and preventing the extracted liquid and other substances inside the outlet pipe 5 and the hollow rotating shaft 12 from entering the interior of the cylindrical casing 11.

[0047] The present invention also provides a medical handle 200, see Figure 6 The medical handle 200 includes a handle body 01 and a motor assembly 100, wherein a cavity is formed inside the handle body 01, and the motor assembly 100 is confined to be arranged in the cavity. The specific structure of the motor assembly 100 refers to the above embodiment. Since the medical handle 200 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0048] In the embodiments of the present invention, please refer to Figure 6The medical handle 200 further includes a locking sleeve, which is provided at the end of the handle body 01 to limit the motor assembly 100 within the cavity. Specifically, after the motor assembly 100 is placed inside the handle body 01, a locking sleeve 7 can be provided at the end of the handle body 01. The locking sleeve 7 and the rear fixing sleeve 2 cooperate to limit the axial position of the motor assembly 100 to prevent it from moving or misaligning during use. For example, an internal thread can be provided at the end of the handle body 01, and an external thread can be provided on the outer periphery of the locking sleeve. The locking sleeve is threadedly connected to the end of the handle body 01, thereby achieving the function of fixing the motor assembly 100 inside the handle body 01.

[0049] The present invention also provides a surgical power device, comprising a corresponding medical handle 200 and a medical knife. The specific structure of the medical handle 200 is similar to that of the aforementioned embodiments. Since the present surgical power device utilizes all of the technical solutions of all of the aforementioned embodiments, it at least possesses all of the beneficial effects provided by the technical solutions of the aforementioned embodiments, and therefore, a detailed description thereof will not be given here. It should be noted that the type of surgical knife is not specifically limited and may, for example, be an electric knife, surgical forceps, or an electric drill.

[0050] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A motor assembly, characterized in that: The motor assembly comprises: The motor comprises a cylindrical housing and a hollow shaft rotatably disposed in the cylindrical housing, wherein a connecting section is provided at a rear end of the cylindrical housing, and a rear end of the hollow shaft extends out of the connecting section; A rear fixing sleeve is detachably connected to the connecting section, and a spacing space is formed between the inner wall of the rear fixing sleeve and the outer wall of the rear end of the hollow rotating shaft. At least one component is provided between the rear end of the hollow rotating shaft and the rear fixing sleeve, and the spacing space is used to accommodate the component.

2. The motor assembly according to claim 1, wherein At least a portion of the connecting section is provided with threads, and the rear fixing sleeve is threadedly connected to the connecting section.

3. The motor assembly according to claim 1, wherein: The at least one component includes a thrust bearing, a limiting portion is protruded from the inner wall of the rear fixed sleeve, and the thrust bearing is arranged between the limiting portion and the motor.

4. The motor assembly according to claim 3, wherein: The motor is provided with a positioning groove at one end of the connecting section. The motor assembly further includes a positioning sleeve, which is sleeved on the outer periphery of the hollow shaft and located in the positioning groove. The limiting portion and the positioning sleeve are respectively in contact with the thrust bearing.

5. The motor assembly according to claim 1, wherein: The at least one component includes a guide tube, which includes a mounting portion extending into the interval space and connected to the rear fixing sleeve. The guide tube is mounted on a side of the rear fixing sleeve facing away from the motor, and the interior of the hollow rotating shaft is connected to the interior of the guide tube.

6. The motor assembly according to claim 5, wherein: The at least one component further includes a sealing member disposed in the spacing space, and the mounting portion and the outer wall of the hollow rotating shaft are in sealing contact with the sealing member respectively.

7. The motor assembly according to claim 6, wherein: A limiting portion is protruded from the inner wall of the rear fixing sleeve, and the limiting portion, the inner wall of the outlet pipe and the outer wall of the hollow rotating shaft together form an installation space for installing the sealing member.

8. A medical handle, characterized in that: The medical handle comprises: a handle body, forming a cavity therein; and A motor assembly is disposed in the cavity, and the motor assembly is the motor assembly according to any one of claims 1 to 7.

9. The medical handle according to claim 8, wherein: The medical handle further includes a locking sleeve, which is disposed at the end of the handle body to limit the motor assembly within the cavity.

10. A surgical power device, characterized in that: The surgical power device includes a matching medical handle and a medical knife, and the medical handle is the medical handle as described in claim 8 or 9.

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