An electric stapler

Abstract

The present invention discloses an electric stapler, which includes a firing button, an adjusting component, an elastic member, a force detection member and a controller. The controller is respectively connected to the force detection member and the adjusting component, and the elastic member is abutted between the firing button and the adjusting component. The force detection member is used to detect the current acting force of the staple cartridge assembly. When the force detection member sends a signal to the controller, the controller controls the adjusting component to slide along the firing button, so that the adjusting component stretches or squeezes the elastic member, thereby adjusting the elastic force of the elastic member until the elastic force of the elastic member matches the current acting force. Thus, the triggering force of the firing button is adjusted in real time according to the acting force of the staple cartridge assembly, which is convenient for improving the working accuracy of the staple cartridge assembly and naturally improving the surgical safety.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and particularly to an electric stapler. Background Art

[0002] An electric stapler generally uses titanium staples and a blade to sever, excise or establish anastomosis of tissues, and is commonly used in surgical operations such as general surgery, thoracic surgery, urological surgery, etc. In view of the fact that a manual stapler has strict requirements on the user's operation skills and operation force, an electric stapler with low operation difficulty has been widely used. Therefore, it is particularly necessary to optimize the structure of the electric stapler.

[0003] The existing electric stapler includes a fixed handle, a firing handle, a rotating handle, a docking rod and a cartridge assembly. The firing handle is hinged to the fixed handle. The rotating handle is rotatably sleeved on the end of the fixed handle. The cartridge assembly is detachably clamped to the free end of the docking rod. Before use, when the rotating handle is rotated first, the docking rod drives the cartridge assembly to rotate around its own axis to adjust the working angle of the cartridge assembly. During use, when the firing handle is pulled, the cartridge assembly opens and closes accordingly, and the cartridge assembly cuts and sutures the components. Although the existing electric stapler has a high degree of automation, it is difficult to control the working accuracy of the cartridge assembly by means of the firing handle, and there is still a risk of misoperation, which poses a great threat to surgical safety.

[0004] Therefore, how to optimize the structure of the electric stapler to improve surgical safety is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide an electric stapler. An elastic member abuts between the firing button and the adjusting assembly. The controller controls the adjusting assembly to slide along the firing button according to the signal sent by the force detecting member to adjust the elastic force of the elastic member until the elastic force matches the current acting force, and adjusts the triggering force of the firing button in real time according to the acting force of the cartridge assembly. The working accuracy of the cartridge assembly is relatively high, and the surgical safety is relatively high.

[0006] The electric stapler provided by the present invention is characterized by comprising:

[0007] A firing button;

[0008] An adjusting assembly slidably mounted on the firing button;

[0009] An elastic member abutting between the firing button and the adjusting assembly;

[0010] A force detecting member for detecting the current acting force of the cartridge assembly;

[0011] A controller connected to the force detection component and the adjustment component respectively, and the controller is used to control the adjustment component to slide along the firing button according to the signal sent by the force detection component to adjust the elastic force of the elastic component until the elastic force matches the current acting force.

[0012] Preferably, the adjustment component includes:

[0013] An armature rod slidably sleeved on the firing button, and the armature rod has an abutting flange that abuts against the elastic component;

[0014] A fixed coil with a relatively fixed position and sleeved on the outer periphery of the armature rod and connected to the controller. The controller is used to adjust the magnetic induction intensity of the fixed coil according to the signal sent by the force detection component so that the fixed coil correspondingly adjusts the sliding distance of the armature rod.

[0015] Preferably, the fixed coil is provided with a conical groove, and a conical block is integrally provided on the outer periphery of the armature rod and is matched with the conical groove.

[0016] Preferably, it further includes a main driving component for driving the nail magazine component to move forward and a displacement detection component for detecting the current moving distance of the firing button. Both the main driving component and the displacement detection component are connected to the controller, and the controller is used to control the main driving component to output a preset driving force according to the signal sent by the displacement detection component based on the current moving distance.

[0017] Preferably, the displacement detection component is connected to the armature rod, and the displacement detection component is used to detect the actual moving distance of the armature rod. The controller is used to adjust the voltage of the fixed coil according to the signal sent by the displacement detection component until the actual moving distance is consistent with the ideal moving distance when the actual moving distance is inconsistent with the ideal moving distance.

[0018] Preferably, it further includes a transmission rack provided between the main driving component and the nail magazine component, and the force detection component is provided on the transmission rack.

[0019] Preferably, it further includes:

[0020] An identification label for being provided on the nail magazine component;

[0021] A reader provided in the controller;

[0022] A communication trigger point provided on the nail magazine component, and the communication trigger point is used to trigger the controller to establish wireless communication between the identification label and the reader after the nail magazine component is docked with the docking rod.

[0023] Preferably, it further includes:

[0024] A target indicator light;

[0025] A travel switch for detecting whether the nail magazine component reaches the target position;

[0026] A Hall sensor for detecting the rotational speed of the main driving part to determine whether the staple cartridge assembly reaches the target position based on the obtained moving distance of the staple cartridge assembly;

[0027] The indicator light, the travel switch and the Hall sensor are respectively connected to the controller. The controller is used to control the target indicator light to display green light when the staple cartridge assembly abuts against the target position according to the signals simultaneously sent by the travel switch, the Hall sensor and the force detection part.

[0028] Preferably, it further includes:

[0029] An alarm for giving an alarm;

[0030] A quality detection part for detecting whether the battery is qualified;

[0031] The alarm and the quality detection part are respectively connected to the controller. The controller is used to install the battery into the battery slot when the battery is qualified according to the signal sent by the quality detection part or start the alarm when the battery is unqualified;

[0032] A battery detection part for detecting whether the battery is installed in the battery slot. The battery detection part is connected to the controller. The controller is used to start the self-discharge component when the battery is installed in the battery slot according to the signal sent by the battery detection part.

[0033] Preferably, it further includes:

[0034] A pressing indicator light;

[0035] A pressing force detection part for detecting whether the actual pressing force of the pressing component reaches the specified pressing force;

[0036] A timer for detecting whether the actual pressing time of the pressing component reaches the specified pressing time;

[0037] The pressing indicator light, the pressing detection part and the timer are respectively connected to the controller. The controller is used to start the pressing indicator light to display green light when the actual pressing force reaches the specified pressing force and the actual pressing time reaches the specified pressing time according to the signals simultaneously sent by the pressing detection and the timer.

[0038] Compared with the background technology, the electric stapler provided by the present invention includes a firing button, an adjusting component, an elastic component, a force detection part and a controller. The controller is respectively connected to the force detection part and the adjusting component. The elastic component abuts between the firing button and the adjusting component. The force detection part is used to detect the current acting force of the staple cartridge assembly. When the force detection part sends a signal to the controller, the controller controls the adjusting component to slide along the firing button, so that the adjusting component stretches or squeezes the elastic component, thereby adjusting the elastic force of the elastic component until the elastic force of the elastic component matches the current acting force. Thus, the triggering force of the firing button is adjusted in real time according to the acting force of the staple cartridge assembly, which is convenient for improving the working accuracy of the staple cartridge assembly, and the surgical safety is naturally improved. Brief Description of the Drawings

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0040] Figure 1 Structural diagram of an electric stapler without a stapler cartridge assembly provided by a specific embodiment of the present invention;

[0041] Figure 2 Structural diagram of the stapler cartridge assembly;

[0042] Figure 3 Assembly structural diagram of the firing button, adjustment assembly and elastic member;

[0043] Figure 4 Structural diagram of the transmission rack provided with detection contacts;

[0044] Figure 5 Assembly sketch of the main drive member and the Hall sensor.

[0045] The reference numerals in the drawings are as follows:

[0046] Firing button 1, docking rod 2, stapler cartridge assembly 3, adjustment assembly 4, elastic member 5, displacement detection member 6, main drive member 7, Hall sensor 8, transmission rack 9, identification label 10 and force detection member 11;

[0047] Detection contact 111;

[0048] Armature rod 41 and fixed coil 42. Detailed Description of the Preferred Embodiment

[0049] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0050] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0051] Please refer to Figures 1 to 5 , Figure 1 Structural diagram of an electric stapler without a stapler cartridge assembly provided by a specific embodiment of the present invention;Figure 2 It is a structural diagram of a staple cartridge assembly; Figure 3 It is an assembly structural diagram of a firing button, an adjusting component and an elastic component; Figure 4 It is a structural diagram of a transmission rack provided with detection contacts; Figure 5 It is a simplified assembly diagram of a main drive component and a Hall sensor.

[0052] The electric stapler provided by the present invention includes a firing button 1, an adjusting component 4, an elastic component 5, a force detection component 11 and a controller. The controller is respectively connected to the force detection component 11 and the adjusting component 4. The controller is specifically a single-chip microcomputer, such as an STC single-chip microcomputer, powered by a 5V power supply, does not require a crystal oscillator, has a large program storage and data storage area inside, has multiple AD sampling pins, can collect the voltage and current of the battery in real time, uses a tiny package to reduce the circuit board area, and the drive chip uses an H-bridge DC motor drive chip, such as MC3386, or can also use a MOS transistor drive. Its core is to use PWM to adjust the voltage and current input to the DC motor.

[0053] The firing button 1 includes a trigger flange and a button body arranged coaxially. The trigger flange is integrally connected to the button body, and the cross-sectional area of the trigger flange is larger than the cross-sectional area of the button body. Specifically, both the trigger flange and the button body are cylindrical, and the outer diameter of the trigger flange is larger than the outer diameter of the button body. When the user's finger pulls the firing button 1, the staple cartridge assembly 3 cuts and sutures the tissue through the transmission assembly. The specific structure and working principle of the staple cartridge assembly 3 can refer to the prior art.

[0054] The adjusting component 4 is slidably installed on the firing button 1 and is used to adjust the triggering force of the firing button 1. The adjusting component 4 can be a hydraulic cylinder, a pneumatic cylinder or a magnetic induction coil, etc. The specific structure and working principle of the adjusting component 4 can refer to the following content.

[0055] The elastic component 5 abuts between the firing button 1 and the adjusting component 4. The elastic component 5 always remains in a compressed state and provides damping for the firing button 1. The elastic component 5 is sleeved on the button body and is specifically a cylindrical spring. One end of the elastic component 5 close to the firing button 1 specifically abuts against the trigger flange.

[0056] The force detection component 11 is used to detect the current acting force of the staple cartridge assembly 3. The force detection component 11 can be a tension / compression sensor, but is not limited thereto. Considering that the staple cartridge assembly 3 involves multiple actions, the force detection component 11 can detect various types of acting forces. For example, when the staple cartridge assembly 3 clamps the tissue, the force detection component 11 is used to detect the clamping force of the staple cartridge assembly 3. When the staple cartridge assembly 3 cuts the tissue, the force detection component 11 is used to detect the cutting force of the staple cartridge assembly 3. When the staple cartridge assembly 3 retracts and returns to its original position, the force detection component 11 is used to detect the retraction force of the staple cartridge assembly 3.

[0057] The transmission component in the present invention includes a transmission gear and a transmission rack 9 that mesh with each other. The transmission rack 9 is arranged between the main driving member 7 and the staple cartridge assembly 3, so that the main driving member 7 drives the staple cartridge assembly 3 to act through the transmission rack 9. The force detection member 11 is arranged on the transmission rack 9. The force detection member 11 is integrally provided with a detection contact 111, and the detection contact 111 is used to connect the controller and the force detection member 11 to ensure the connection reliability between the force detection member 11 and the controller and ensure that the force detection member 11 has a high detection accuracy. Of course, the installation method of the force detection member 11 is not limited to this.

[0058] When the force detection member 11 detects the current acting force of the staple cartridge assembly 3 in a certain working state, the force detection member 11 sends a signal to the controller. The controller, according to the pre-stored corresponding relationship between the current acting force and the elastic force in different working states, when the relationship between the current acting force and the elastic force does not correspond, the controller controls the adjustment component 4 to slide along the firing button 1. The firing button 1 slides to the right or left, so that the adjustment component 4 correspondingly stretches or compresses the elastic member 5, thereby adjusting the elastic force of the elastic member 5 until the elastic force of the elastic member 5 matches the current acting force. Thus, the triggering force of the firing button 1 is adjusted in real time according to the acting force of the staple cartridge assembly 3, which is convenient for improving the working accuracy of the staple cartridge assembly 3, and the surgical safety is naturally improved.

[0059] Considering the working accuracy of the adjustment component 4, the adjustment component 4 is of the magnetic induction type and includes an armature rod 41 and a fixed coil 42. The armature rod 41 is slidably sleeved on the firing button 1. The armature rod 41 has an abutting flange that abuts against the elastic member 5. The abutting flange is arranged at one end of the armature rod 41 close to the firing button 1. In addition to abutting against the elastic member 5, the abutting flange is also used for axially limiting the armature rod 41. To attach Figure 3 Taking the current view as the reference, when the armature rod 41 moves a certain distance, the stop flange abuts against the left end of the fixed coil 42 to prevent the armature rod 41 from detaching from the fixed coil 42.

[0060] The position of the fixed coil 42 is relatively fixed, so that the armature rod 41 axially slides relative to the fixed coil 42. The fixed coil 42 is sleeved on the outer periphery of the armature rod 41, and the fixed coil 42 is connected to the controller. The controller adjusts the current of the fixed coil 42 according to the signal sent by the force detection member 11. Thus, the magnetic induction intensity of the fixed coil 42 can be adjusted, thereby adjusting the magnetic induction stress of the fixed coil 42, and further adjusting the acting force applied to the armature rod 41, so as to accurately adjust the sliding distance of the armature rod 41 according to the force detection member 11.

[0061] Specifically, the fixed coil 42 is provided with a conical groove, and a conical block is integrally provided on the outer periphery of the armature rod 41. The conical block cooperates with the conical groove to keep the length of the magnetic induction lines of the fixed coil 42 consistent, ensuring that the current flowing through the fixed coil 42 and the magnetic induction stress are linearly related. This facilitates the controller to precisely adjust the magnetic induction stress applied to the armature rod 41 by adjusting the current flowing through the fixed coil 42, providing a basis for the stable sliding of the armature rod 41.

[0062] The present invention further includes a main driving member 7 and a displacement detecting member 6 respectively connected to the controller. The main driving member 7 is used to drive the cartridge assembly 3 to move forward. The main driving member 7 can be a servo motor, or of course it can also be a DC motor. The displacement detecting member 6 is used to detect the current moving distance of the firing button 1 and can be a displacement sensor. When the displacement detecting member 6 detects the current moving distance of the firing button 1, the displacement detecting member 6 sends a signal to the controller. The controller adjusts the driving voltage and current of the main driving member 7 according to the corresponding relationship between the current moving distance of the firing button 1 stored and the preset driving force of the main driving member 7, and then controls the main driving member 7 to output the preset driving force, so that the main driving member 7 accurately outputs the driving force, thereby accurately controlling the tissue pressing and cutting force of the cartridge assembly 3 according to the moving distance of the firing button 1, which is beneficial to improving the working accuracy of the cartridge assembly 3 and further improving the surgical safety.

[0063] In this specific embodiment, the button body of the firing button 1 is provided with a guide rod passing through the center of the armature rod 41. The armature rod 41 slides axially along the guide rod, and one end of the guide rod away from the button body is fixedly connected to the displacement detecting member 6. The guide rod is integrally connected to the button body.

[0064] In addition, the displacement detecting member 6 can enable the adjusting assembly 4 to achieve closed-loop control. The displacement detecting member 6 is connected to the armature rod 41. One end of the armature rod 41 away from the firing button 1 is integrally provided in a connecting sleeve, and the connecting sleeve is also fixedly connected to the displacement detecting member 6. Based on the connection between the displacement detecting member 6 and the armature rod 41, in addition to detecting the current moving distance of the firing button 1, the displacement detecting member 6 is also used to detect the actual moving distance of the armature rod 41. When the displacement detecting member 6 detects the actual moving distance of the armature rod 41, the displacement detecting member 6 sends a signal to the controller. The controller determines whether the actual moving distance is consistent with the ideal moving distance. If not, the controller adjusts the actual moving distance of the armature rod 41 again by adjusting the current of the fixed coil 42 until the actual moving distance is consistent with the ideal moving distance; if so, the controller controls the current of the fixed coil 42 to be different and the position of the armature rod 41 remains unchanged. Thus, the moving distance of the armature rod 41 is precisely controlled, which is beneficial to further improving the working accuracy and further improving the surgical safety.

[0065] To identify staple cartridge assemblies 3 of different models, the present invention further includes an identification tag 10, a reader, and a communication trigger point. The identification tag 10 is provided on the staple cartridge assembly 3, and the content stored in the identification tags 10 of different types of staple cartridge assemblies 3 is different. The reader is provided on the controller, and wireless communication is achieved between the reader and the identification tag 10 by means of radio frequency identification technology. The communication trigger point is provided on the staple cartridge assembly 3. When the staple cartridge assembly 3 is docked with the docking rod 2, the communication trigger point abuts against the staple cartridge assembly 3, triggering the controller. The controller controls the communication control circuit to be connected, establishing wireless communication between the identification tag 10 and the reader, automatically identifying the type of the top cartridge assembly, and also solving the problems of facilitating the reduction of communication energy consumption and controller energy consumption, as well as solving the problems of ultra-long-distance identification and avoiding misidentification of non-installed cutting components. The identification tag 10 may include information such as the manufacturer, batch, and model of the staple cartridge assembly 3.

[0066] The present invention further includes an emergency stop button connected to the controller. When other tissues are accidentally injured, the emergency stop button is urgently activated. The emergency stop button sends an emergency stop instruction to the controller, and the controller controls the main drive member 7 to rotate in the reverse direction at high speed. The main drive member 7 drives the staple cartridge assembly 3 to open the jaws and drives the staple cartridge assembly 3 to quickly reset, which is beneficial to improving the safety of the operation.

[0067] The present invention further includes a target indicator light, a travel switch, and a Hall sensor 8 respectively connected to the controller. The target indicator light is an LED light for reminding the user. The travel switch is used to detect whether the staple cartridge assembly 3 reaches the target position, which can be a mechanical switch, a magnetic switch, an optoelectronic switch, etc., and is not specifically limited here. The Hall sensor 8 is used to detect the rotation speed of the main drive member 7. When the main drive member 7 rotates one circle, the Hall sensor 8 sends a pulse signal to the control, thereby accurately calculating the moving distance of the staple cartridge assembly 3. Accordingly, it can be accurately judged whether the staple cartridge assembly 3 reaches the target position. In addition, according to the relationship between the force and the moving distance stored in the controller, the controller calculates the moving distance of the staple cartridge assembly 3 based on the acting force detected by the force detection member 11, and can also accurately judge whether the staple cartridge assembly 3 reaches the target position. Thus, a redundant design is realized based on the travel switch, the Hall sensor 8, and the force detection member 11. The controller controls the target indicator light to display green light according to the signals simultaneously sent by the three, reminding that the staple cartridge assembly 3 has accurately reached the target position, making the working accuracy of the staple cartridge assembly 3 higher and the operation safety better.

[0068] To make the main drive member 7 operate reliably, the present invention provides two power supply circuits. One is that the drive circuit supplies power to the motor, and the other is that the control circuit supplies power to the chip. The chip power supply part uses a diode for unidirectional conduction and a large-capacity capacitor. When the battery voltage drops temporarily, it can still maintain the normal operation of the chip, ensuring the safety of the operation. Among them, the chip is built into the controller.

[0069] The present invention further includes an alarm, a quality detector, and a battery detector, which are respectively connected to the controller. The alarm is used to issue an alarm. The alarm can be an audible and visual alarm for alerting the user. The quality detector is used to detect whether the battery is qualified. The quality detector can be a voltmeter for detecting the voltages of the positive and negative electrodes of the battery, or an image recognition device for detecting the battery model, which is not limited herein. The controller is used to load the battery into the battery slot when the battery is qualified according to the signal sent by the quality detector, or to activate the alarm when the battery is unqualified, so as to remind the user to check or replace the battery in time.

[0070] Certainly, the present invention can also be provided with a power detector connected to the controller and used to detect the battery power. When the power detector detects that the remaining power of the battery is lower than the preset power, the controller activates the alarm to issue an alarm. The power detector can be a voltmeter, but is not limited thereto. The preset power can be pre-input into the controller.

[0071] The battery detector is used to detect whether the battery is loaded into the battery slot. It can be an obstacle sensor provided in the battery slot, but is not limited thereto. When the battery is loaded into the battery slot, the battery contacts the battery detector. The controller activates the self-discharge component according to the signal sent by the battery detector to make the battery self-discharge, so that the battery consumes all its energy within a predetermined time, preventing danger during battery recycling or repeated use of the battery.

[0072] After the pressing component presses the tissue, the firing button 1 is triggered, and the cartridge assembly 3 performs a cutting action. During the cutting process, the force detector 11 is used to detect whether the acting force of the cartridge assembly 3 is normal. If so, the displacement detector 6 is used to determine whether the cartridge assembly 3 moves to the target position; if not, the controller activates the alarm to alert the user to trigger the retraction button, and the cartridge assembly 3 retracts the knife quickly. When the cartridge assembly 3 abuts against the target position, the controller controls the cartridge assembly 3 to perform suturing at the target position according to the signal sent by the displacement detector 6. After the suturing is completed, a reset detector connected to the controller can be added. The reset detector can be a contact sensor, etc. The reset detector is used to detect whether the cartridge assembly 3 is reset. When the reset detector detects that the cartridge assembly 3 is reset, the controller controls the reset indicator light to display green light. The reset indicator light can be an LED light.

[0073] The present invention further includes a pressing indicator light, a pressing force detector, and a timer, which are respectively connected to the controller. The pressing indicator light can be an LED light. The pressing force detector is used to detect whether the actual pressing force of the pressing assembly reaches the specified pressing force. Specifically, the pressing force detector can be a pressure sensor. The timer is used to detect whether the actual pressing time of the pressing assembly reaches the specified pressing time. When the pressing force detector detects that the actual pressing force reaches the specified pressing force and the timer detects that the actual pressing time reaches the specified pressing time, the pressing force detector and the timer simultaneously send signals to the controller, and the controller activates the pressing indicator light to display a green light, reminding the user that the pressing assembly performs normal pressing on the tissue.

[0074] The present invention further includes a display screen connected to the controller. The display screen can be used to display in real time parameters such as the model, clamping force, cutting force, battery power, battery voltage, output current, number of firings, and remaining number of firings of the cartridge assembly 3.

[0075] In the present invention, the communication between the controller and each component is preferably wireless communication. Wireless transmission methods such as WLAN, 2.4G, 5G, and Bluetooth can be used to transmit signals to the controller. For example, a 2.4G communication chip NRF24L01 is used to communicate with the controller in SPI mode.

[0076] The above has introduced the electric stapler provided by the present invention in detail. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. An electric stapler, characterized in that, Comprising: A firing button (1); An adjusting component (4) slidably mounted on the firing button (1); An elastic member (5) abutted between the firing button (1) and the adjusting component (4); A force detection member (11) for detecting the current acting force of the staple cartridge assembly (3); A controller respectively connected to the force detection member (11) and the adjusting component (4), the controller being configured to control the adjusting component (4) to slide along the firing button (1) according to a signal sent by the force detection member (11) to adjust the elastic force of the elastic member (5) until the elastic force matches the current acting force; The adjusting component (4) includes: An armature rod (41) slidably sleeved on the firing button (1), the armature rod (41) having an abutting flange abutting against the elastic member (5); A fixed coil (42) with a relatively fixed position and sleeved on the outer periphery of the armature rod (41) and connected to the controller, the controller being configured to adjust the magnetic induction intensity of the fixed coil (42) according to an electrical signal sent by the force detection member (11) so that the fixed coil (42) correspondingly adjusts the sliding distance of the armature rod (41).

2. The electric stapler according to claim 1, wherein, The fixed coil (42) is provided with a conical groove, and a conical block matched with the conical groove is integrally provided on the outer periphery of the armature rod (41).

3. The electric stapler according to claim 1, wherein It further includes a main driving member (7) for driving the staple cartridge assembly (3) to move forward and a displacement detection member (6) for detecting the current moving distance of the firing button (1), the main driving member (7) and the displacement detection member (6) are both connected to the controller, and the controller is configured to control the main driving member (7) to output a preset driving force according to a signal sent by the displacement detection member (6) based on the current moving distance.

4. The electric stapler according to claim 3, characterized in that, The displacement detection member (6) is connected to the armature rod (41), the displacement detection member (6) is configured to detect the actual moving distance of the armature rod (41), and the controller is configured to adjust the voltage of the fixed coil (42) according to a signal sent by the displacement detection member (6) when the actual moving distance is inconsistent with the ideal moving distance until the actual moving distance is consistent with the ideal moving distance.

5. The electric stapler according to claim 3, characterized in that, It further includes a transmission rack (9) provided between the main driving member (7) and the staple cartridge assembly (3), and the force detection member (11) is provided on the transmission rack (9).

6. The electric stapler according to any one of claims 3 to 5, characterized in that, It further includes: An identification tag (10) for being provided on the staple cartridge assembly (3); A reader provided on the controller; A communication trigger point provided on the staple cartridge assembly (3), the communication trigger point being configured to trigger the controller to establish wireless communication between the identification tag (10) and the reader after the staple cartridge assembly (3) is docked with the docking rod (2).

7. The electric stapler according to claim 6, wherein, It further includes: A target indicator light; A travel switch for detecting whether the staple cartridge assembly (3) reaches the target position; A Hall sensor (8) for detecting the rotation speed of the main driving member (7) to judge whether the staple cartridge assembly (3) reaches the target position according to the obtained moving distance of the staple cartridge assembly (3); The indicating lamp, the travel switch and the Hall sensor (8) are respectively connected to the controller, and the controller is configured to control the target indicating lamp to display green light when the staple cartridge assembly (3) abuts against the target position according to the signals simultaneously sent by the travel switch, the Hall sensor (8) and the force detection member (11).

8. The electric stapler according to any one of claims 3 to 5, characterized in that, Further comprising: An alarm for giving an alarm; A quality detection member for detecting whether the battery is qualified; The alarm and the quality detection member are respectively connected to the controller, and the controller is configured to load the battery into the battery slot when the battery is qualified or activate the alarm when the battery is unqualified according to the signal sent by the quality detection member; A battery detection member for detecting whether the battery is loaded into the battery slot, the battery detection member is connected to the controller, and the controller is configured to activate the self-discharge assembly when the battery is loaded into the battery slot according to the signal sent by the battery detection member.

9. The electric stapler according to any one of claims 3 to 5, characterized in that, Further comprising: A pressing indicating lamp; A pressing force detection member for detecting whether the actual pressing force of the pressing assembly reaches the specified pressing force; A timer for detecting whether the actual pressing time of the pressing assembly reaches the specified pressing time; The pressing indicating lamp, the pressing force detection member and the timer are respectively connected to the controller, and the controller is configured to activate the pressing indicating lamp to display green light when the actual pressing force reaches the specified pressing force and the actual pressing time reaches the specified pressing time according to the signals simultaneously sent by the pressing force detection member and the timer.

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