A steering safety assembly for an electric anastomat

Abstract

The application discloses a steering safety assembly for an electric anastomat, and relates to the technical field of electric anastomosers, which comprises a fixing seat, a rotating disc, a knob, a transmission rod and a safety button. The upper end of the fixing seat is provided with the rotating disc, the lower end of the rotating disc is connected with a pull rod transmission for controlling the steering of an end effector, the rotating disc can drive the end effector to steer through the pull rod when the rotating disc rotates, the upper end of the rotating disc is vertically provided with a lower rectangular hole, and an elastic element is arranged in the lower rectangular hole; the lower end of the knob is vertically provided with an upper rectangular hole; the transmission rod is arranged in the upper rectangular hole, the transmission rod has a first position located in the upper rectangular hole, and the knob can drive the rotating disc to rotate through the transmission rod when the transmission rod is located at a second position; the safety button is installed on the knob, and the safety button and the elastic element are matched to drive the transmission rod to switch between the first position and the second position. The application can solve the technical problem that the end effector performs a bending action when the knob is misoperated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric anastomat, in particular to a steering safety assembly for electric anastomat. BACKGROUND

[0002] The electric anastomat comprises an operating handle, a shaft assembly and an end effector, wherein the end effector is used to cut and suture the tissue in the human body cavity under the control of the operating handle. The bending of the end effector of the existing electric endoscope cutting anastomat and manual cutting anastomat is mostly realized by manually rotating the knob. During the operation, the clinician needs to operate the handle of the cutting anastomat with one hand and control the bending of the end effector by rotating the knob with the other hand. In the electric anastomat with the bending knob, the bending knob is misoperated under incorrect conditions, which causes the left and right deflection of the end effector. If the bending knob is misoperated in the clinical operation, the end effector will tear the tissue and cause a large medical accident, which has a large clinical risk. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a steering safety assembly for electric anastomat, which can solve the technical problem of the end effector executing the bending action when the knob is misoperated.

[0004] According to the steering safety assembly for electric anastomat provided by the first aspect of the present application, the steering safety assembly comprises a fixed seat, a rotating disc, a knob, a transmission rod and a safety button. The fixed seat is provided with a mounting cylinder at the upper end. The rotating disc is rotatably installed in the mounting cylinder at the upper end. The lower end of the rotating disc is connected in transmission with a pull rod for controlling the steering of the end effector. When the rotating disc rotates, the end effector can be driven to steer by the pull rod. A lower rectangular hole is vertically formed in the upper end of the rotating disc, and an elastic member is arranged in the lower rectangular hole. The knob is rotatably installed in the mounting cylinder at the lower end. An upper rectangular hole is vertically formed in the lower end of the knob. The transmission rod is arranged in the upper rectangular hole. The transmission rod has a first position which is entirely located in the upper rectangular hole. The transmission rod has a second position which is simultaneously located in the upper rectangular hole and the lower rectangular hole. When the transmission rod is in the second position, the knob can drive the rotating disc to rotate through the transmission rod. The safety button is installed on the knob. When the safety button is pressed, the transmission rod can be pushed to compress the elastic member and switch to the second position. The elastic member is used to push the transmission rod to switch from the second position to the first position.

[0005] According to the turning safety assembly for the electric anastomat, the transmission rod cannot drive the rotating disc to rotate even if the operator accidentally touches the knob in the first position, the operator needs to press the safety button while rotating the knob to switch the transmission rod to the second position, the knob drives the rotating disc to rotate through the transmission rod, and the rotating disc drives the pull rod to move to change the turning angle of the end effector. The safety button solves the problem of the end effector performing the turning action when the knob is accidentally operated.

[0006] According to some embodiments of the application, the knob comprises a cylindrical part and a holding part, the cylindrical part is installed in the mounting cylinder, the holding part is a long strip for easy gripping, the holding part is arranged at the upper end of the cylindrical part, and two safety buttons are arranged on the two sides of the thickness direction of the central part of the holding part.

[0007] According to some embodiments of the application, the holding part is provided with a safety insertion hole on the side surface, the safety insertion hole is communicated with the upper rectangular hole, the safety button partially extends into the safety insertion hole, the safety button can slide along the length direction of the safety insertion hole, one end of the safety button extending into the safety insertion hole is provided with a first inclined surface, and the first inclined surface is used for pushing the transmission rod to move from the first position to the second position.

[0008] According to some embodiments of the application, the inner wall of the safety insertion hole is provided with a first clamping groove extending along the length direction of the safety insertion hole, and the side wall of the safety button is provided with a first clamping buckle, which can slide along the length direction of the first clamping groove after being clamped into the first clamping groove.

[0009] According to some embodiments of the application, a plurality of guide holes extending horizontally to the lower rectangular hole are arranged on the outer side wall of the rotating disc, a pressing rod is slidably arranged in the guide hole, a pressing block is slidably arranged in the lower rectangular hole, the pressing block is located between the elastic member and the transmission rod, a tapered part gradually narrowing is arranged on the upper end of the pressing block, when the transmission rod is in the first position, the pressing block is aligned with the guide hole, the pressing block pushes the pressing rod to extend out of the outer side wall of the rotating disc and abut against the inner wall of the mounting cylinder, and when the transmission rod is in the second position, the tapered part is aligned with the guide hole, and the pressing rod can retract into the outer side wall of the rotating disc to separate from the inner wall of the mounting cylinder.

[0010] According to some embodiments of the application, the inner wall of the mounting cylinder is provided with a notch matching the position of the guide hole, and the notch is used for increasing the friction between the pressing rod and the inner wall of the mounting cylinder.

[0011] According to some embodiments of the application, the lower end of the mounting cylinder is provided with an annular limiting block, and the limiting block and the knob cooperate to axially limit the rotating disc.

[0012] According to some embodiments of the present application, the lower rectangular hole top end is provided with a guide structure to guide the transmission rod.

[0013] According to some embodiments of the present application, the transmission rod upper end is narrowed to reduce the thickness of the knob upper end.

[0014] According to some embodiments of the present application, the installation cylinder inner wall is provided with a second buckle, the knob outer wall is provided with an annular second clamping groove, and the second buckle matches the second clamping groove.

[0015] Additional aspects and advantages of the present application will be made apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0016] The present application will be further described below in conjunction with the drawings and embodiments, wherein:

[0017] Figure 1 The schematic diagram of the overall structure mounted on the anastomat according to an embodiment of the present application;

[0018] Figure 2 The schematic diagram of the explosion according to an embodiment of the present application;

[0019] Figure 3 The schematic diagram of the explosion according to an embodiment of the present application; Figure 2 The enlarged view of A in FIG. 4;

[0020] Figure 4 The schematic diagram of the explosion of the rotating disc according to an embodiment of the present application;

[0021] Figure 5 The schematic diagram of the cross section according to an embodiment of the present application;

[0022] Figure 6 The schematic diagram of the cross section of the knob according to an embodiment of the present application;

[0023] Figure 7 The schematic diagram of the knob according to an embodiment of the present application;

[0024] Figure 8 The schematic diagram of the cross section of the rotating disc according to an embodiment of the present application;

[0025] Figure 9 The schematic diagram of the rotating disc according to an embodiment of the present application;

[0026] Figure 10 The schematic diagram of the safety button according to an embodiment of the present application.

[0027] LIST OF REFERENCE NUMBERS

[0028] The fixed seat 100;

[0029] The mounting cylinder 200, the notch 201, the limiting block 210, the second buckle 220;

[0030] The rotating disc 300, the lower rectangular hole 310, the elastic piece 311, the pressing block 312, the tapered part 313, the guide structure 314, the guide hole 320, the pressing rod 321;

[0031] The knob 400, the upper rectangular hole 401, the cylindrical part 410, the holding part 420, the safety insertion hole 421, the first clamping groove 422, the second clamping groove 430;

[0032] The transmission rod 500;

[0033] The safety button 600, the first inclined surface 601, the first buckle 610. DETAILED DESCRIPTION

[0034] The embodiments of the present application will be described in detail below with reference to the drawings, in which the same or similar components have the same reference numerals throughout the several views. The embodiments described below are exemplary only, and are not intended to be limiting of the present application.

[0035] In the description of the present application, it should be understood that the relative description of direction, such as up, down, etc. is based on the direction or position relationship shown in the drawings, and is only for the purpose of describing the present application and simplifying the description, and does not indicate or imply that the device or component referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0036] In the description of the present application, the plural refers to two or more. If there is a description of first, second, etc., it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implying the number of technical features indicated or the sequence of technical features indicated.

[0037] In the description of the present application, unless otherwise explicitly limited, the words such as setting, mounting, connecting, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0038] Reference Figures 1 to 10As shown, the steering safety assembly for the electric anastomat includes a fixed seat 100, a rotating disc 300, a knob 400, a transmission rod 500, and a safety button 600. The upper end of the fixed seat 100 is provided with a mounting cylinder 200. The fixed seat 100 and the mounting cylinder 200 are both made of plastic. The fixed seat 100 and the mounting cylinder 200 are integrally formed. The upper end of the rotating disc 300 is rotatably installed in the mounting cylinder 200. The lower end of the rotating disc 300 is connected with a pull rod for controlling the steering of the end effector. The structure and mounting mode of the pull rod and the end effector are both prior art, and thus are not shown in the figure and will not be described in detail. The lower end of the rotating disc 300 is connected with the pull rod in the form of a gear and a rack, so as to convert the rotary motion of the rotating disc 300 into the linear motion of the pull rod. When the rotating disc 300 rotates, the end effector can be driven to steer through the pull rod. The transmission mode of the rotating disc 300 and the pull rod can also use a crank slider mechanism, a cam mechanism, and other mechanisms capable of converting rotary motion into linear motion. The upper end of the rotating disc 300 is vertically provided with a lower rectangular hole 310. The cross section of the lower rectangular hole 310 is a square. An elastic member 311 is arranged in the lower rectangular hole 310. The elastic member 311 is selected from springs or other specific elastic components. The lower end of the knob 400 is rotatably installed in the mounting cylinder 200. The lower end of the knob 400 is vertically provided with an upper rectangular hole 401. The knob 400 is rotated by an operator. The transmission rod 500 is arranged in the upper rectangular hole 401. The transmission rod 500 can move along the extension direction of the upper rectangular hole 401. The shape and size of the upper rectangular hole 401 are equal to those of the lower rectangular hole 310. The cross section of the transmission rod 500 is a square. The size of the transmission rod 500 matches the size of the upper rectangular hole 401, so that the transmission rod 500 can enter the upper rectangular hole 401. Since the cross sections of the transmission rod 500 and the upper rectangular hole 401 are both squares, the transmission rod 500 and the upper rectangular hole 401 cannot rotate relative to each other after the transmission rod 500 extends into the upper rectangular hole 401. Thus, the knob 400 can drive the transmission rod 500 to rotate. Similarly, the transmission rod 500 and the lower rectangular hole 310 also cannot rotate relative to each other after the transmission rod 500 extends into the lower rectangular hole 310. At this time, the transmission rod 500 can drive the rotating disc 300 to rotate. The upper rectangular hole 401 and the lower rectangular hole 310 are aligned, so that the transmission rod 500 can extend out of the upper rectangular hole 401 to enter the lower rectangular hole 310. The transmission rod 500 has a first position entirely located in the upper rectangular hole 401. The transmission rod 500 has a second position located in both the upper rectangular hole 401 and the lower rectangular hole 310. When the transmission rod 500 is in the second position, the knob 400 can drive the rotating disc 300 to rotate through the transmission rod 500. The safety button 600 is installed on the knob 400. When the safety button 600 is pressed, the transmission rod 500 can be pushed to compress the elastic member 311 and switch to the second position. When the safety button 600 is released, the elastic member 311 can push the transmission rod 500 to switch from the second position to the first position.When the safety button 600 is not pressed, the transmission rod 500 is in the first position, and the operator cannot drive the rotating disc 300 to rotate even if the knob 400 is accidentally touched. The operator needs to press the safety button 600 while rotating the knob 400, so that the transmission rod 500 is switched to the second position, the knob 400 drives the rotating disc 300 to rotate through the transmission rod 500, and the rotating disc 300 drives the pull rod to move to change the steering angle of the end effector.

[0039] Referring to Figure 2 and Figure 7 It can be understood that the knob 400 includes a cylindrical part 410 and a holding part 420. The cylindrical part 410 is installed in the mounting cylinder 200, and the holding part 420 is a long strip-shaped structure for easy gripping. The upper rectangular hole 401 passes through the cylindrical part 410 and extends into the holding part 420. The holding part 420 is arranged at the upper end of the cylindrical part 410, and the holding part 420 and the cylindrical part 410 are integrally injection molded. The safety button 600 is provided with two, and the two safety buttons 600 are arranged on both sides of the thickness direction of the central part of the holding part 420. Since the safety button 600 is located in the center of the holding part 420, even if the safety button 600 is accidentally touched, since the position of the safety button 600 is close to the rotation center of the knob 400, only pressing the safety button 600 cannot drive the knob 400 to rotate, and the operator also needs to hold the holding part 420 to rotate. Since the safety button 600 is arranged on both sides of the thickness direction of the holding part 420, the operator can conveniently press the safety button 600 when holding the holding part 420.

[0040] Referring to Figure 7 and Figure 10 It can be understood that the holding part 420 side is provided with a safety insertion hole 421, the safety insertion hole 421 is communicated with the upper rectangular hole 401, the safety button 600 part extends into the safety insertion hole 421, the safety button 600 can slide along the length direction of the safety insertion hole 421, and the safety button 600 can move into the upper rectangular hole 401 through the safety insertion hole 421 to push the transmission rod 500 to move downward. One end of the safety button 600 extending into the safety insertion hole 421 is provided with a first inclined surface 601, and the first inclined surface 601 is inclined downward. The first inclined surface 601 is used to drive the transmission rod 500 to move from the first position to the second position. The upper end of the transmission rod 500 is provided with a chamfer to reduce the friction between the first inclined surface 601 and the transmission rod 500. Since the transmission rod 500 needs to move up and down, and the operator is usually used to pinch the knob 400 from the direction perpendicular to the movement direction of the transmission rod 500, the movement direction of the safety button 600 is perpendicular to the movement direction of the transmission rod 500. The transmission is realized by setting the first inclined surface 601, which is convenient for the operator to use.

[0041] Referring to Figure 7 and Figure 10As shown, it can be understood that the inner wall of the safety jack 421 is provided with a first clamping groove 422, the first clamping groove 422 extends along the length direction of the safety jack 421, and the length of the extension of the first clamping groove 422 determines the stroke of the movement of the safety button 600. The side wall of the safety button 600 is provided with a first clasp 610, and the first clasp 610 can slide along the length direction of the first clamping groove 422 after being clamped into the first clamping groove 422. The cooperation of the first clasp 610 and the first clamping groove 422 makes the safety button 600 can move in the safety jack 421 and the safety button 600 will not be separated from the safety jack 421.

[0042] Referring to Figure 2 and Figure 3 As shown, it can be understood that the outer side wall of the rotating disc 300 is provided with a plurality of guide holes 320 extending horizontally to the lower rectangular hole 310, and the guide holes 320 extend along the radial direction of the rotating disc 300. The guide holes 320 are symmetrically provided with four. The guide hole 320 is slidably provided with a pressing rod 321, the pressing rod 321 is made of stainless steel material, the lower rectangular hole 310 is slidably provided with a pressing block 312, and the cross section of the pressing block 312 is a square. The size of the pressing block 312 matches the size of the lower rectangular hole 310, and the pressing block 312 can just slide in the lower rectangular hole 310. The pressing block 312 is located between the elastic member 311 and the transmission rod 500, the elastic member 311 first pushes the pressing block 312, and then pushes the transmission rod 500 through the pressing block 312. The upper end of the pressing block 312 is provided with a tapered portion 313 which gradually narrows, and the tapered portion 313 plays a role of letting go, which can make the pressing rod 321 enter the lower rectangular hole 310 when the pressing rod 321 is aligned with the tapered portion 313. Moreover, the tapered portion 313 can push the pressing rod 321 into the guide hole 320 in the process of rising. When the transmission rod 500 is in the first position, the pressing block 312 is aligned with the guide hole 320, the pressing block 312 pushes the pressing rod 321 to extend out of the outer side wall of the rotating disc 300 and abut against the inner wall of the mounting cylinder 200, and when the transmission rod 500 is in the second position, the tapered portion 313 is aligned with the guide hole 320, and the pressing rod 321 can retract into the outer side wall of the rotating disc 300 to separate from the inner wall of the mounting cylinder 200. After the safety button 600 is released, the transmission rod 500 moves to the first position, the pressing rod 321 abuts against the inner wall of the mounting cylinder 200 to limit the rotation of the rotating disc 300 by friction. Effectively fix the steering angle of the end effector. After pressing the safety button 600, the transmission rod 500 moves to the second position, the pressing rod 321 separates from the inner wall of the mounting cylinder 200, and the rotating disc 300 can be rotated by the knob 400.

[0043] Referring to Figure 3As shown, it can be understood that the inner wall of the mounting cylinder 200 is provided with a notch 201 matching the position of the guide hole 320. The size of the notch 201 should be as small as possible, but due to the limitation of the injection molding process, the width of the notch 201 is selected to be 0.7mm to 1.3mm. The depth of the notch 201 is selected to be 0.7mm to 1.3mm. The vertical length of the notch 201 is not less than the diameter of the pressing rod 321. When the transmission rod 500 is in the first position, the pressing block 312 is aligned with the guide hole 320, the pressing block 312 pushes the pressing rod 321 to extend out of the outer wall of the rotating disc 300 and abuts against the notch 201 on the inner wall of the mounting cylinder 200, the notch 201 is used to increase the friction between the pressing rod 321 and the inner wall of the mounting cylinder 200. The rotating disc 300 is more firmly locked. It can be predicted that the greater the elastic coefficient k value of the elastic member 311, the greater the elastic force it generates, and the greater the friction between the pressing rod 321 and the inner wall of the mounting cylinder 200. However, it will require more effort to press the safety button 600, affecting the user's experience. Therefore, without affecting the user's hand feeling and experience, the elastic coefficient k value of the elastic member 311 should be as large as possible.

[0044] Referring to Figures 1 to 5 As shown, it can be understood that the lower end of the mounting cylinder 200 is provided with an annular limiting block 210, which is integrally formed with the mounting cylinder 200. The limiting block 210 serves to support the rotating disc 300 and limit the downward movement stroke of the rotating disc 300. The limiting block 210 and the knob 400 cooperate to axially limit the rotating disc 300. The rotating disc 300 is clamped between the limiting block 210 and the knob 400, and the knob 400 limits the upward movement stroke of the rotating disc 300. In order to reduce the jamming feeling when operating the knob 400, it is necessary to reduce the friction when the rotating disc 300 rotates. Considering the problem of oil leakage caused by adding lubricating oil, the rotating disc 300 is made of Teflon material, which has the function of self-lubrication and reduces friction.

[0045] Referring to Figure 4 And Figure 9 As shown, it can be understood that the top end of the lower rectangular hole 310 is provided with a guide structure 314 for guiding the transmission rod 500. The guide structure 314 is four inclined surfaces arranged at the top end edge of the lower rectangular hole 310. The inclined surfaces of the top end edge of the lower rectangular hole 310 are matched with each other to enable the transmission rod 500 to rotate clockwise when moving downward to an angle aligned with the lower rectangular hole 310. The guide structure 314 is used to guide the transmission rod 500 when the angle of the transmission rod 500 does not match the angle of the lower rectangular hole 310, so that the transmission rod 500 is rotated to the correct angle to enter the lower rectangular hole 310. The convenience of operation is improved.

[0046] Referring to Figure 4As shown, it can be understood that the upper end of the transmission rod 500 is narrowed to reduce the thickness of the upper end of the knob 400, and the upper end of the upper rectangular hole 401 is also narrowed, so as to leave space for the first clamping groove 422 and the safety plug hole 421 without increasing the thickness of the upper end of the knob 400.

[0047] Referring to Figure 3 and Figure 5 As shown, it can be understood that the inner wall of the mounting cylinder 200 is provided with a plurality of second buckles 220, and the outer wall of the knob 400 is provided with an annular second clamping groove 430, and the second buckle 220 is matched with the second clamping groove 430. The knob 400 is connected to the mounting cylinder 200 in a buckle connection manner, which has the advantages of simple assembly and reliable connection.

[0048] Use steps: when the operator needs to adjust the steering angle of the end effector, the hand holds the holding part 420 and presses the safety button 600, the safety button 600 moves to push the transmission rod 500 downward, the transmission rod 500 is guided into the lower rectangular hole 310 in the process of moving downward, and when the transmission rod 500 moves to the second position, the pressing rod 321 is separated from the inner wall of the mounting cylinder 200, and the rotating disc 300 can be freely rotated. Rotate the holding part 420, at this time, the transmission rod 500 is located in the lower rectangular hole 310 and the upper rectangular hole 401, so that rotating the holding part 420 can drive the rotating disc 300 to rotate through the transmission rod 500, so as to drive the pull rod and drive the steering of the end effector. Then the operator releases the holding part 420 and the safety button 600, and since the elastic member 311 is compressed in the process of moving the transmission rod 500 to the second position, the elastic member 311 is reset at this time, the pressing block 312 is pushed upward to align with the guide hole 320, the pressing block 312 pushes the pressing rod 321 to extend out of the outer wall of the rotating disc 300 and abut against the inner wall of the mounting cylinder 200, and the pressing rod 321 abuts against the inner wall of the mounting cylinder 200 to limit the rotation of the rotating disc 300 by friction. Effectively fix the steering angle of the end effector, and in the process of moving the pressing block 312 upward, the transmission rod 500 moves to the first position, and the transmission rod 500 is located in the upper rectangular hole 401, at this time, rotating the knob 400 cannot drive the rotating disc 300 to rotate.

[0049] The embodiments of the application are described in detail above with reference to the drawings, but the application is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the purpose of the application.

Claims

1. A steering safety assembly for an electric stapler, characterized in that, include: A fixing base (100) is provided with an mounting cylinder (200) at its upper end; A rotating disk (300) is rotatably mounted in the mounting cylinder (200) at its upper end. The lower end of the rotating disk (300) is connected to a pull rod that controls the direction of the end effector. When the rotating disk (300) rotates, it can drive the end effector to turn through the pull rod. A lower rectangular hole (310) is vertically opened at the upper end of the rotating disk (300), and an elastic element (311) is provided in the lower rectangular hole (310). A knob (400) is rotatably mounted in the mounting cylinder (200) at its lower end, and a vertical upper rectangular hole (401) is provided at the lower end of the knob (400). A transmission rod (500) is inserted into the upper rectangular hole (401). The transmission rod (500) has a first position in which it is entirely located in the upper rectangular hole (401), and a second position in which it is simultaneously located in the upper rectangular hole (401) and the lower rectangular hole (310). When the transmission rod (500) is in the second position, the knob (400) can drive the rotating disk (300) to rotate through the transmission rod (500). A safety button (600) is mounted on the knob (400). When the safety button (600) is pressed, it can push the transmission rod (500) to compress the elastic element (311) and switch to a second position. The elastic element (311) is used to push the transmission rod (500) from the second position to the first position.

2. The steering safety assembly for an electric stapler according to claim 1, characterized in that: The knob (400) includes a cylindrical part (410) and a grip part (420). The cylindrical part (410) is installed in the mounting cylinder (200). The grip part (420) is a long strip shape that is easy to grip. The grip part (420) is located at the upper end of the cylindrical part (410). There are two safety buttons (600). The two safety buttons (600) are respectively located on both sides of the center part of the grip part (420) in the thickness direction.

3. The steering safety assembly for an electric stapler according to claim 2, characterized in that: The grip (420) has a safety socket (421) on its side, which is connected to the upper rectangular hole (401). The safety button (600) extends into the safety socket (421) and can slide along the length of the safety socket (421). The end of the safety button (600) that extends into the safety socket (421) is provided with a first inclined surface (601), which is used to push the transmission rod (500) from a first position to a second position.

4. The steering safety assembly for an electric stapler according to claim 3, characterized in that: The inner wall of the safety socket (421) is provided with a first slot (422), which extends along the length direction of the safety socket (421). The side wall of the safety button (600) is provided with a first buckle (610), which can slide along the length direction of the first slot (422) after being engaged in the first slot (422).

5. The steering safety assembly for an electric stapler according to claim 4, characterized in that: The outer wall of the rotating disk (300) has multiple guide holes (320) extending horizontally to the lower rectangular hole (310). A pressure rod (321) is slidably disposed in the guide hole (320), and a pressure block (312) is slidably disposed in the lower rectangular hole (310). The pressure block (312) is located between the elastic member (311) and the transmission rod (500). The upper end of the pressure block (312) has a gradually narrowing tapered portion (313). The transmission rod (500) When in the first position, the pressure block (312) is aligned with the guide hole (320), and the pressure block (312) pushes the pressure rod (321) to extend out of the outer wall of the rotating disk (300) and abut against the inner wall of the mounting cylinder (200). When the transmission rod (500) is in the second position, the tapered part (313) is aligned with the guide hole (320), and the pressure rod (321) can retract to the outer wall of the rotating disk (300) to separate from the inner wall of the mounting cylinder (200).

6. The steering safety assembly for an electric stapler according to claim 5, characterized in that: The inner wall of the mounting cylinder (200) is provided with grooves (201) that match the position of the guide hole (320). The grooves (201) are used to increase the friction between the pressure rod (321) and the inner wall of the mounting cylinder (200).

7. The steering safety assembly for an electric stapler according to claim 6, characterized in that: The lower end of the mounting cylinder (200) is provided with an annular limiting block (210), and the limiting block (210) and the knob (400) cooperate to limit the axial movement of the rotating disk (300).

8. The steering safety assembly for an electric stapler according to claim 1, characterized in that: The top of the lower rectangular hole (310) is provided with a guide structure (314) to guide the transmission rod (500).

9. The steering safety assembly for an electric stapler according to claim 1, characterized in that: The upper end of the transmission rod (500) is narrowed to reduce the thickness of the upper end of the knob (400).

10. The steering safety assembly for an electric stapler according to claim 1, characterized in that: The inner wall of the mounting cylinder (200) is provided with a second buckle (220), and the outer wall of the knob (400) is provided with an annular second groove (430), the second buckle (220) and the second groove (430) are matched.

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