Electrically insulated stapler gearbox and electric stapler

Abstract

The electric insulation anastomat gear box comprises a motor assembly, a motor support, a transmission gear and an insulation layer, the motor assembly comprises a motor output shaft, the motor support is provided with a support installation hole in the axis direction, the output end is inserted into the support installation hole in a matched mode, and the motor support is arranged at the output end and used for fixing the motor assembly. The transmission gear is provided with a gear mounting hole in which the output end is inserted in a matched mode in the axis direction, the transmission gear is arranged at the output end and used for power transmission, and the motor output shaft is provided with an insulating layer wrapping the peripheral face of the contact part of the motor output shaft and the transmission gear; the electric anastomat comprises the electric insulation anastomat gear box. Through the above mode, the metal gear box is still adopted, and the surface of the output shaft of the motor is directly clung to the insulating material, so that the axial conduction of current can be cut off while good heat conductivity and transmission efficiency are ensured, the output current is ensured to be within a safe range, and the voltage withstanding test requirement is met.

Description

Technical Field

[0001] The utility model relates to the technical field of staplers, in particular to an electrically insulated stapler gear box and an electric stapler. Background Art

[0002] In actual use, electric laparoscopic staplers are powered by batteries. However, according to national safety standards and regulations, such devices must pass a withstand voltage test. This means that when the device is subjected to a voltage of 1000V, the output current of the connected laparoscopic stapler assembly must not exceed 2mA to ensure safety.

[0003] Since the designed electric laparoscopic stapler uses a metal motor gearbox, it is easy to form an additional conductive path through metal contact during the voltage test, thereby increasing the current, causing the current to exceed the expected peak during the voltage test and fail to meet safety standards.

[0004] For insulation isolation, the current market mainly uses plastic motor gearboxes. Compared with metal gearboxes, plastic motor gearboxes have some inherent defects, mainly including:

[0005] The low thermal conductivity of plastic materials results in poor thermal conductivity of the motor, and heat cannot be dissipated in time, affecting its lifespan; the strength and stiffness of plastic materials are relatively low, and they are prone to deformation when the torque is too large. Deformation will further affect the transmission efficiency, resulting in unstable transmission efficiency. Utility Model Content

[0006] The main technical problem solved by the present invention is to provide an electrically insulating stapler gearbox and an electric stapler, which still use a metal gearbox and at the same time directly adhere the insulating material to the surface of the motor output shaft, thereby ensuring good thermal conductivity and transmission efficiency while isolating the axial conduction of current, ensuring that the output current is within a safe range and meets the voltage test requirements.

[0007] In order to solve the above technical problems, the present invention adopts a technical solution: to provide an electrically insulating stapler gear box, comprising:

[0008] A motor assembly including a motor output shaft having a coaxial output end;

[0009] A motor bracket, wherein the motor bracket has a bracket mounting hole along the axial direction for inserting into the output end, and the motor bracket is arranged at the output end for fixing the motor assembly;

[0010] A transmission gear, wherein the transmission gear has a gear mounting hole along the axial direction for inserting into the output end, and the transmission gear is arranged at the output end for power transmission;

[0011] The insulating layer is configured to cover the outer peripheral surface of the contact portion between the motor output shaft and the transmission gear to block axial conduction of current.

[0012] In a preferred embodiment of the present invention, the motor assembly is a motor assembly made of metal material.

[0013] In a preferred embodiment of the present invention, a screw hole is provided on the motor bracket, and the screw hole is connected to a corresponding connecting hole on the motor assembly through a screw.

[0014] In a preferred embodiment of the present invention, the insulating layer material includes insulating tape, and the insulating tape is tightly wrapped around the outer circumference of the contact portion between the motor output shaft and the transmission gear.

[0015] In a preferred embodiment of the present invention, the insulating tape is a polyvinyl chloride film insulating tape.

[0016] In a preferred embodiment of the present invention, the insulating layer material comprises at least two layers of insulating tape.

[0017] In a preferred embodiment of the present invention, the thickness of the insulating layer is 0.1-0.3 mm, and the thickness of each layer of insulating tape is 0.08-0.13 mm.

[0018] In a preferred embodiment of the present invention, the thickness of each layer of insulating tape is 0.1 mm.

[0019] In order to solve the above technical problems, another technical solution adopted by the present invention is: to provide an electric stapler, including: a device body, a barrel assembly and a stapler assembly, the rear end of the barrel assembly is connected to the body, and the front end of the barrel assembly is connected to the stapler assembly, and an electrically insulating stapler gear box is provided in the device body. The electrically insulating stapler gear box can block axial current conduction so that the output current of the stapler assembly is within a safe range after the electric stapler is turned on.

[0020] The beneficial effects of the present utility model are as follows: the motor assembly made of metal material has good thermal conductivity and better transmission efficiency; the insulating material is closely attached to the surface of the metal motor output shaft to achieve a good insulation isolation effect, directly isolating the electrical conductivity of the motor and the transmission gear, so that after the electric stapler is turned on, the output current of the stapler assembly is within a safe range and meets the voltage resistance test requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. Among them:

[0022] Figure 1 This is a structural diagram of a preferred embodiment of the electrically insulated stapler gearbox of the present invention;

[0023] Figure 2 This is a structural diagram of a preferred embodiment of the motor assembly of the present utility model;

[0024] Figure 3 This is a structural diagram of a preferred embodiment of the motor bracket of the present utility model;

[0025] Figure 4 This is a structural diagram of a preferred embodiment of the transmission gear of the present utility model;

[0026] Figure 5 This is a structural diagram of a preferred embodiment of the insulating layer of the present invention;

[0027] The markings of the components in the accompanying drawings are as follows:

[0028] 1. Motor assembly, 11. Motor output shaft, 12. Output end, 2. Motor bracket, 21. Bracket mounting hole, 3. Transmission gear, 31. Gear mounting hole, 4. Insulation layer, 5. Screws. DETAILED DESCRIPTION

[0029] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention. Example

[0031] See also Figure 1-5 :

[0032] This embodiment relates to an electrically insulating stapler gearbox, which is suitable for an electric stapler and mainly includes: a motor assembly 1, a motor bracket 2, a transmission gear 3 and an insulating layer 4.

[0033] Specifically, the motor assembly includes a motor output shaft 11 having a coaxial output end 12 .

[0034] The motor assembly 1 is a motor assembly made of metal material, which has good thermal conductivity, stable structure, large torque transmission and better transmission efficiency.

[0035] Next is the motor bracket 2 and transmission gear 3:

[0036] The motor bracket 2 has a bracket mounting hole 21 along the axial direction for inserting into the output end, and the motor bracket 2 cooperates with the output end 12 of the motor output shaft 11 through the bracket mounting hole 21; the transmission gear 3 has a gear mounting hole 31 along the axial direction for inserting into the output end, and the transmission gear 3 cooperates with the output end 12 of the motor output shaft 11 through the gear mounting hole 31 to realize axial transmission.

[0037] Furthermore, a screw hole 21 is provided on the motor bracket 2, and the screw hole 21 is connected to the corresponding connection hole on the motor assembly through a screw 5. The motor bracket 2 is installed at the output end 12 of the motor output shaft 11 to fix the motor assembly 1.

[0038] More specifically, in this embodiment, an insulating layer 4 is provided on the motor output shaft 11 : the insulating layer 4 is configured to cover the outer peripheral surface of the contact portion between the motor output shaft 11 and the transmission gear 3 to block axial conduction of current.

[0039] Based on the above content, the insulating layer 4 material includes insulating tape, which is wrapped tightly around the outer peripheral surface of the contact part of the motor output shaft 11 and the transmission gear 3. The tight insulating tape can fit tightly on the surface of the output shaft, providing additional fixing force to prevent loosening or falling off due to vibration of the output shaft, thereby ensuring the fixing effect and insulation effect.

[0040] The insulating tape is a polyvinyl chloride film insulating tape. The polyvinyl chloride film has good electrical insulation performance and can effectively prevent current from passing through. It can be used to wrap the conductive shaft to achieve a good insulation and isolation effect.

[0041] The insulating layer 4 material comprises at least two layers of insulating tape, wherein the thickness of the insulating layer is 0.1-0.3 mm, and the thickness of each layer of insulating tape is 0.08-0.13 mm.

[0042] For example, an optional situation is described: the insulating layer 4 includes three layers of polyvinyl chloride film insulating tape, and the thickness of each layer of insulating tape is 0.1 mm. Example

[0043] Based on the electrically insulated stapler gearbox of Example 1, this embodiment provides an electric stapler, which includes: a device body, a barrel assembly and a stapler assembly, wherein the rear end of the barrel assembly is connected to the body, and the front end of the barrel assembly is connected to the stapler assembly.

[0044] The above-mentioned electrically insulating stapler gearbox is arranged in the device body, and an insulating layer 4 is provided on the motor output shaft of the stapler gearbox, which can cover the outer peripheral surface of the contact part of the motor output shaft 11 and the transmission gear 3. The insulating layer 4 can block the axial conduction of current to isolate the conductivity of the motor assembly 1 and the transmission gear 3, so that after the electric stapler is turned on, the output current of the stapler assembly is within a safe range and meets the voltage resistance test requirements.

[0045] The beneficial effects of the electrically insulated stapler gearbox and the electric stapler of the utility model are:

[0046] The motor components made of metal materials have good thermal conductivity, stable structure, large transmission torque and better transmission efficiency;

[0047] The insulating material is placed close to the surface of the motor output shaft, which can effectively prevent the axial conduction of current and achieve good insulation isolation effect;

[0048] It can directly cut off the conductivity of the motor and transmission gear, so that the output current of the stapler assembly is within a safe range after the electric stapler is turned on, meeting the withstand voltage test requirements;

[0049] The operation is simple and easy to implement, does not require complicated tooling, has low improvement costs, and saves time and manpower.

[0050] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An electrically insulating stapler gearbox, characterized in that: include: A motor assembly including a motor output shaft having a coaxial output end; A motor bracket, wherein the motor bracket has a bracket mounting hole along the axial direction for inserting into the output end, and the motor bracket is arranged at the output end for fixing the motor assembly; A transmission gear, wherein the transmission gear has a gear mounting hole along the axial direction for inserting into the output end, and the transmission gear is arranged at the output end for power transmission; The insulating layer is configured to cover the outer peripheral surface of the contact portion between the motor output shaft and the transmission gear to block axial conduction of current.

2. The electrically insulating stapler gearbox according to claim 1, wherein: The motor assembly is made of metal material.

3. The electrically insulating stapler gearbox according to claim 1, wherein: The motor bracket is provided with a screw hole, which is connected to the corresponding connecting hole on the motor assembly through a screw.

4. The electrically insulating stapler gearbox according to claim 1, wherein: The insulating layer material includes an insulating tape, and the insulating tape is tightly wrapped around the outer circumference of the contact portion between the motor output shaft and the transmission gear.

5. The electrically insulating stapler gearbox according to claim 4, wherein: The insulating tape is a polyvinyl chloride film insulating tape.

6. The electrically insulating stapler gearbox according to claim 4, wherein: The insulating layer material comprises at least two layers of insulating tape.

7. The electrically insulating stapler gearbox according to claim 6, wherein: The thickness of the insulating layer is 0.1-0.3 mm, and the thickness of each layer of insulating tape is 0.08-0.13 mm.

8. The electrically insulating stapler gearbox according to claim 7, wherein: The thickness of each layer of insulating tape is 0.1 mm.

9. An electric stapler, comprising: The gun barrel assembly and the anastomosis device assembly are characterized in that the rear end of the gun barrel assembly is connected to the gun barrel assembly and the front end of the gun barrel assembly is connected to the anastomosis device assembly. The device body is provided with an electrically insulating stapler gear box as described in any one of claims 1 to 8, which can block axial current conduction so that the output current of the stapler assembly is within a safe range after the electric stapler is turned on.

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