An electric stapler and its control system

Abstract

The present application discloses an electric stapler and its control system, including: a component identification module for generating an identification valid signal when the cutting component is properly connected to the stapler body; a position detection module for generating an initial point valid signal when the cutting component moves to the initial point; and a control module for, after receiving the identification valid signal and the initial point valid signal, controlling the cutting component to perform a cutting and stapling operation according to a first firing signal output by the firing switch. In the present application, the component identification module is used to determine whether the cutting component is properly connected to the stapler body, and the position detection module is used to determine whether the cutting component reaches the initial position of its cutting stroke. Only after the control module receives the valid signals output by the component identification module and the position detection module will it respond to the first firing signal output by the firing switch, so as to prevent the occurrence of misoperation or instrument damage caused by performing a firing action when the cutting component is not installed or not properly installed.

Description

Technical Field

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

[0002] With the popularization of electrosurgical instruments, for the purpose of reducing the burden on doctors' hands and the adverse effects caused by hand tremors during the firing process, electric staplers have been widely used in open or minimally invasive general surgery, thoracic surgery, urology, etc. Currently, electric staplers all include at least two switchable cutting components connected to the stapler body. Doctors can replace the cutting components according to surgical needs, thereby extending the number of times the stapler body can be used in the same operation and reducing the overall usage cost. However, in the prior art, there is no judgment on whether the cutting component is properly installed on the stapler body. When the cutting component is not installed or not properly installed, if the firing action is performed, it will cause misoperation or damage to the instrument.

[0003] Therefore, how to provide a solution to the above technical problems is what those skilled in the art need to solve currently. Summary of the Invention

[0004] The purpose of the present application is to provide a control system for an electric stapler, which can prevent the occurrence of misoperation or instrument damage caused by performing a firing action when the cutting component is not installed or not properly installed; another purpose of the present application is to provide an electric stapler including the above control system.

[0005] To solve the above technical problems, the present application provides a control system for an electric stapler. The electric stapler includes a stapler body and a cutting component connected to the stapler body. The stapler body is provided with a firing switch. The control system includes:

[0006] A component identification module, configured to generate an identification valid signal when the cutting component is normally connected to the stapler body;

[0007] A position detection module, configured to generate an initial point valid signal when the cutting component moves to the initial point;

[0008] A control module, configured to, after receiving the identification valid signal and the initial point valid signal, control the cutting component to perform a cutting and stapling operation according to a first firing signal output by the firing switch.

[0009] Preferably, the position detection module is further configured to:

[0010] Generate a in-place point valid signal when the cutting component moves to the in-place point;

[0011] Correspondingly, the control module is further configured to, after receiving the effective in-place signal, control the cutting assembly to perform a retraction operation according to the second firing signal output by the firing switch, and no longer respond to the first firing signal.

[0012] Preferably, the stapler body is further provided with a motor;

[0013] Correspondingly, the process of controlling the cutting assembly to perform a retraction operation according to the second firing signal output by the firing switch after receiving the effective in-place signal is specifically as follows:

[0014] After receiving the effective in-place signal, the motor is braked by current short-circuit control until the second firing signal output by the firing switch is received, and the cutting assembly is controlled to perform a retraction operation according to the second firing signal output by the firing switch.

[0015] Preferably, the control module is further configured to brake the motor by current short-circuit control after controlling the cutting assembly to perform the retraction operation.

[0016] Preferably, the control module is further configured to control the motor to remain in a braking state by a magnetic latching relay after controlling the cutting assembly to perform the retraction operation and braking the motor by current short-circuit control.

[0017] Preferably, the control module is further configured to respond to the first firing signal after the control system is powered on again and new identification effective signals and new initial point effective signals are received.

[0018] Preferably, the stapler body is further provided with a rack;

[0019] The position detection module includes:

[0020] A protrusion provided on the rack;

[0021] A travel detection switch configured to contact the protrusion when the protrusion moves to the initial point or the in-place point to generate the initial point effective signal or the in-place point effective signal.

[0022] Preferably, the protrusion includes a first protrusion and a second protrusion spaced apart by a preset distance;

[0023] Correspondingly, the travel detection switch includes:

[0024] An initial point detection switch that contacts the first protrusion when the first protrusion moves to the initial point;

[0025] An in-place point detection switch that contacts the second protrusion when the second protrusion moves to the in-place point.

[0026] Preferably, the number of the in-place point detection switches is multiple, and the multiple in-place point detection switches are spaced along the movement direction of the rack;

[0027] The electric stapler includes at least two switchable cutting assemblies connected to the stapler body, and the stroke of the cutting assembly corresponds to the position of the in-place point detection switch one by one.

[0028] Preferably, the component identification module is provided with at least two stroke identification contacts, and the stroke identification contacts are arranged at intervals along the installation direction of the cutting assembly;

[0029] Wherein, the stroke identification contacts are connected in series with the in-place point detection switches one by one.

[0030] Preferably, the control system further includes:

[0031] A prompt module, configured to prompt information corresponding to the identification valid signal when receiving the identification valid signal.

[0032] Preferably, the control system further includes:

[0033] An empty staple cartridge protection module, configured to perform an empty staple cartridge protection operation when the cutting assembly is an empty staple cartridge.

[0034] Preferably, the cutting assembly is provided with a push rod and a staple cartridge;

[0035] The empty staple cartridge protection module includes:

[0036] A current limiting unit, configured to limit the input current of the motor;

[0037] A staple pushing block, configured to move forward under the action of the push rod; when the staple cartridge is an empty staple cartridge, the staple pushing block stays at the front of the staple cartridge;

[0038] The push rod is provided with a limiting portion, and the staple cartridge is provided with a groove, and the limiting portion is configured to make the push rod stuck in the groove when the staple pushing block stays at the front of the staple cartridge.

[0039] Preferably, the stapler body is further provided with a power module;

[0040] The current limiting unit includes a current limiting resistor and a fuse, wherein:

[0041] The first end of the current limiting resistor is connected to the power module, the second end of the current limiting resistor is connected to the first end of the fuse, and the second end of the fuse is connected to the motor.

[0042] Preferably, the control module specifically includes:

[0043] An execution unit, configured to, after receiving the recognition valid signal and the initial point valid signal, control the cutting assembly to perform a cutting and anastomosis operation according to the first firing signal received through the empty staple cartridge protection module in a first working mode; and further configured to, after receiving a normal cutting instruction, control the cutting assembly to perform the cutting and anastomosis operation in a second working mode according to the first firing signal received;

[0044] A judgment unit, configured to judge whether the staple cartridge is an empty staple cartridge, and if so, trigger the empty staple cartridge protection module, and if not, generate the normal cutting instruction;

[0045] Wherein, the input current of the motor corresponding to the first working mode is less than the input current of the motor corresponding to the second working mode.

[0046] To solve the above technical problems, the present application further provides an electric stapler, including the control system as described in any one of the above.

[0047] The present application provides a control system for an electric stapler. The component recognition module is used to judge whether the cutting assembly is normally connected to the stapler body, and the position detection module is used to judge whether the cutting assembly reaches the initial position of its cutting stroke. The control module will only respond to the first firing signal output by the firing switch after receiving the valid signals output by the component recognition module and the position detection module, so as to prevent misfiring or damage to the instrument caused by firing when the cutting assembly is not installed or not correctly installed. The present application further provides an electric stapler, which has the same beneficial effects as the above control system. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required in the prior art and the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0049] Figure 1 A structural schematic diagram of an electric stapler provided by the present application;

[0050] Figure 2 A structural schematic diagram of the cutting assembly with different cutting strokes provided by the present application;

[0051] Figure 3 A structural schematic diagram of a control system for an electric stapler provided by the present application;

[0052] Figure 4Schematic diagram of an elastic contact piece connecting a travel recognition contact provided by the present application;

[0053] Figure 5 Schematic diagram of the structure of a position detection module provided by the present application;

[0054] Figure 6 Schematic diagram of the structure of another control system of an electric stapler provided by the present application;

[0055] Figure 7 Schematic diagram of the structure of a prompt module provided by the present application;

[0056] Figure 8 Schematic diagram of the structure of another control system of an electric stapler provided by the present application. Detailed implementation manners

[0057] The core of the present application is to provide a control system for an electric stapler, which can prevent the firing action from being performed when the cutting component is not installed or not correctly installed, thus avoiding misoperation or damage to the instrument; another core of the present application is to provide an electric stapler including the above control system.

[0058] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0059] With the popularization of electrosurgical instruments, electric staplers have been widely used in open or minimally invasive general surgery, thoracic surgery, urology, etc. Currently, electric staplers all include at least two switchable cutting components connected to the stapler body, and doctors can replace the cutting components according to the surgical needs. However, in the prior art, there is no judgment on whether the cutting component and the stapler body are properly installed. When the cutting component is not installed or not correctly installed, if the firing action is performed, it will cause misoperation or damage to the instrument. Based on the above problems in the related art, the new control solutions for electric staplers provided by the following several embodiments of the present application can achieve the purpose of preventing the firing action from being performed when the cutting component is not installed or not correctly installed, and improving the safety and reliability of the electric stapler.

[0060] To facilitate the understanding of the control system of the present application, the electric stapler applicable to the control system of the present application will be introduced below. Refer to Figure 1 , which shows a schematic diagram of the structure of an electric stapler according to an embodiment of the present application.

[0061] As shown Figure 1 in the figure, the electric stapler provided by the embodiment of the present application includes: a stapler body 01 and at least two switchable cutting assemblies 02 connected to the stapler body 01. Referring to Figure 2 the figure, it shows the cutting assemblies 02 with different cutting strokes. It can be understood that when the user needs different cutting strokes according to the type and location of the tissue to be cut, the cutting assembly 02 with an appropriate cutting stroke can be selected and connected to the stapler body 01. For the convenience of replacing the cutting assembly 02, the cutting assembly 02 and the stapler body 01 are plugged in. In addition, the stapler body 01 is also provided with a firing switch for outputting a firing signal, a motor for driving the cutting assembly 02 to perform cutting and stapling operations, and other devices.

[0062] The control process of the electric stapler provided by the present application will be introduced in detail below.

[0063] Please refer to Figure 3 , Figure 3 which is a schematic structural diagram of a control system of an electric stapler provided by the present application. The control system includes:

[0064] A component recognition module 1, configured to generate a recognition valid signal when the cutting assembly 02 is normally connected to the stapler body 01;

[0065] Specifically, the component recognition module 1 is configured to determine whether the cutting assembly 02 and the stapler body 01 are normally installed. Considering that there are multiple cutting assemblies 02 with different cutting strokes that can be adapted to the stapler body 01, therefore, the component recognition module 1 is also configured to determine the cutting stroke of the cutting assembly 02 currently connected to the stapler body 01. When the cutting assembly 02 is normally connected to the stapler body 01, a recognition valid signal corresponding to the cutting stroke of the current cutting assembly 02 is generated.

[0066] Specifically, in order to be able to automatically recognize the cutting stroke of the current cutting assembly 02 after the cutting assembly 02 is inserted into the stapler body 01, the component recognition module 1 provided by the present application may specifically include at least two groups of stroke recognition contacts 011 provided in the stapler body 01. The stroke recognition contacts 011 correspond one-to-one to the cutting strokes of the cutting assembly 02. That is, the number of cutting assemblies 02 that the stapler body 01 can be adapted to, the corresponding number of stroke recognition contacts 011 are provided in the stapler body 01, and the stroke recognition contacts 011 are arranged at intervals along the installation direction of the cutting assembly 02. The stroke recognition contacts 011 are connected to the control module 3, so that when any one of the stroke recognition contacts 011 is turned on, it is determined that the cutting assembly 02 and the stapler body 01 are normally installed, and a recognition valid signal is sent to the control module 3. The recognition valid signal includes the cutting stroke of the cutting assembly 02 corresponding to the turned-on stroke recognition contact 011.

[0067] Meanwhile, inside the stapler body 01, there is also an elastic contact piece 012 configured to selectively contact the stroke identification contact 011 to connect the stroke identification contact 011. Refer to Figure 4 as shown Figure 4 FIG. is a schematic diagram of the elastic contact piece 012 connecting a stroke identification contact 011. It can be understood that the stroke identification contact 011 preferably includes a static contact and a moving contact, and is in a normally open state, that is, the moving contact and the static contact are not connected under normal conditions. When the elastic contact piece 012 contacts the moving contact of the stroke identification contact 011, it can drive the moving contact to connect with the static contact to send an identification valid signal to the control module 3.

[0068] Furthermore, refer to Figure 2 as shown, on the cutting assembly 02, there is a stroke identification portion 021 configured to cooperate and connect with the stapler body 01. The elastic contact piece 012 can be linked with the stroke identification portion 021. That is, when the stroke identification portion 021 is installed into the stapler body 01, the elastic contact piece 012 can be driven to move together while the stroke identification portion 021 moves. The stroke identification portion 021 corresponds one-to-one with the cutting stroke of the cutting assembly 02. Specifically, different stroke identification portions 021 have different assembly lengths. If the cutting stroke of the cutting assembly 02 is different, the assembly length of the stroke identification portion 021 is different. Therefore, when different stroke identification portions 021 are installed into the stapler body 01, the moving distances of different stroke identification portions 021 are different, so that the moving distance of the elastic contact piece 012 linked therewith is different. Furthermore, the position of the stroke identification contact 011 can be arranged according to the assembly length of the stroke identification portion 021, so that after the stroke identification portion 021 is assembled in place, the elastic contact piece 012 contacts the stroke identification contact 011 corresponding to the cutting assembly 02, thereby connecting the stroke identification contact 011.

[0069] Specifically, the stroke identification contacts 011 are arranged side by side, and the distances from the elastic contact piece 012 to the stroke identification contacts 011 respectively correspond one-to-one and are equal to the assembly lengths of the stroke identification portions 021. Therefore, when the stroke identification portion 021 is assembled in place, it can be ensured that the elastic contact piece 012 moves in place, connecting the stroke identification contact 011 corresponding to the stroke identification portion 021, thereby outputting an identification valid signal.

[0070] The position detection module 2 is configured to generate an initial point valid signal when the cutting assembly 02 moves to the initial point;

[0071] Specifically, the position detection module 2 is used to detect the current position of the cutting component 02. To reduce costs and volume, the position detection module 2 in this embodiment only detects whether the cutting component 02 reaches the initial point and the in-place point. Among them, the initial point is the initial position when the blade of the cutting component 02 performs the cutting and anastomosis operation according to the preset cutting stroke, and the in-place point is the end position when the blade of the cutting component 02 performs the cutting and anastomosis operation according to the preset cutting stroke. When the position detection module 2 detects that the cutting component 02 moves to the initial point, it is determined that the cutting component 02 can perform the cutting and anastomosis operation, and at this time, an initial point valid signal is generated. When the position detection module 2 detects that the cutting component 02 moves to the in-place point, it is determined that this cutting operation is completed, and an in-place point valid signal is generated.

[0072] Specifically, the position detection module 2 may include a plurality of protrusions provided on a rack inside the stapler body 01, and a plurality of stroke detection switches provided on the stapler body 01. The stroke detection switches can detect the stroke of the rack. Among them, the protrusions may specifically refer to top blocks, and the detection stroke switches can be selected from one or more of photoelectric, electromagnetic, and tactile types. It can be understood that the rack moves under the drive of the motor, thereby driving the cutting component 02 to move so that the cutting component 02 performs the cutting and anastomosis operation under the action of the firing switch. Therefore, the initial position of the rack corresponds to the initial position of the cutter head of the cutting component 02, and the end position of the rack corresponds to the end position of the cutter head of the cutting component 02.

[0073] Furthermore, the plurality of stroke detection switches may include an initial point detection switch and a plurality of in-place point detection switches. It can be understood that the cutting components 02 with different cutting strokes correspond to the same initial point. Due to different cutting strokes, different cutting components 02 correspond to different in-place points. Then, the positions of the in-place point detection switches can be set according to the cutting strokes of the cutting components 02. As the rack moves, the protrusions provided thereon can contact the stroke detection switches, thereby completing the detection of the strokes of the rack and the cutting component 02 and generating corresponding position valid signals. For example, when the protrusion contacts the initial point detection switch and the initial point detection switch is valid, it is determined at this time that the rack is at the initial point and the blade of the cutting component 02 is at the initial position, and an initial point valid signal is generated. As the rack moves, the protrusion contacts a certain in-place point detection switch and this in-place point detection switch is valid. At this time, it is determined that the rack reaches the in-place point and the blade of the cutting component 02 is at the end position, and a corresponding in-place point valid signal is generated, and the initial point valid signal or the in-place point detection signal is output to the control module 3 so that the control module 3 can perform corresponding control operations according to the position of the cutting component 02.

[0074] Specifically, refer to Figure 5As shown, taking three cutting components 02 as an example, the position detection module 2 includes an initial point detection switch OPS, a first in-place point detection switch TS1, a second in-place point detection switch TS2, and a third in-place point detection switch TS3. The rack is provided with a first protrusion H1 and a second protrusion H2, and the first protrusion H1 and the second protrusion H2 are spaced apart by a preset distance. Correspondingly, the rack also includes a first groove, a second groove, and a third groove. Among them, the width of the detection switch should not be greater than 5 mm, the contact width should not be greater than 2 mm, the stroke is 1 - 3 mm, preferably 2 mm, the length of the first groove can be 20 - 40 mm, preferably 30 mm, the lengths of the first protrusion H1 and the second protrusion H2 can both be 5 - 15 mm, preferably 11 mm, and the length of the third groove can be 10 - 20 mm, preferably 15 mm.

[0075] When the cutting component 02 and the stapler body 01 are normally installed, the first protrusion H1 on the rack contacts the initial point detection switch OPS. At this time, the initial point detection switch OPS is effective and generates an initial point effective signal. As the rack moves forward, the second protrusion H2 on the rack contacts the in-place point detection switch TS. It can be understood that considering the different cutting strokes of the cutting component 02, an in-place point effective signal is not generated when reaching any in-place point detection switch TS. Therefore, when the second protrusion H2 contacts the in-place point detection switch corresponding to the cutting stroke of the current cutting component 02, an in-place point effective signal will be generated. As a preferred embodiment, the stroke identification contacts 011 are connected in series with the in-place point detection switches TS one by one, so as to ensure that the in-place point detection switch TS will generate an in-place point effective signal only after the stroke identification contact 011 corresponding to the current cutting stroke is turned on. Assume that the component identification module 1 includes a first stroke identification contact DP1, a second stroke identification contact DP2, and a third stroke identification contact DP3, which respectively correspond to the cutting components 02 with lengths of 60, 45, and 30. Assume that the current cutting component 02 connected to the stapler body 01 is a cutting component 02 with a length of 60. Then the first stroke identification contact DP1 is effective. When the second protrusion H2 contacts the second in-place point detection switch TS2 or the third in-place point detection switch TS3, neither the second in-place point detection switch TS2 nor the third in-place point detection switch TS3 will generate an in-place point effective signal until the second protrusion H2 contacts the first in-place point detection switch TS1 as the rack moves, and the first in-place point detection switch TS1 generates an in-place point effective signal.

[0076] The control module 3 is used to control the cutting component 02 to perform a cutting and stapling operation according to the first firing signal output by the firing switch after receiving the identification effective signal and the initial point effective signal.

[0077] Specifically, after the control module 3 receives the recognition valid signal sent by the component recognition module 1 and the initial point valid signal sent by the position detection module 2, it determines that the blade of the current cutting component 02 has reached the specified initial position and can perform the cutting and anastomosis operation. At this time, after receiving the first firing signal output by the firing switch, it controls the motor to reverse and drives the rack forward, thereby driving the cutting component 02 forward to perform the cutting and anastomosis operation. It can be understood that when the firing switch is pressed, the firing switch outputs the first firing signal, and when the firing switch is lifted, the firing switch outputs the second firing signal. When the control module 3 receives the second firing signal, it controls the motor to stop. In this embodiment, after the control module 3 receives the recognition valid signal and the initial point valid signal, it responds to the first firing signal output by the firing switch to prevent the firing action from being implemented when the cutting component 02 is not installed or not correctly installed, resulting in misoperation or damage to the instrument.

[0078] As the rack moves forward, when the cutting component 02 reaches the in-place point corresponding to its cutting stroke, the in-place point detection switch outputs the in-place point valid signal. When the control module 3 receives the in-place point valid signal, it controls the cutting component 02 to perform the retraction operation. Specifically, after the control module 3 receives the in-place point valid signal, it controls the motor to brake autonomously through current short-circuit. After receiving the second firing signal output by the firing switch, it controls the motor to rotate forward to retract the rack, thereby driving the blade of the cutting component 02 backward. When the rack retracts to the initial point, that is, when the control module 3 receives the initial point valid signal output by the initial point detection switch OPS, it controls the motor to brake through current short-circuit and controls the motor to remain in the braking state through the magnetic latching relay until the next cutting component 02 is installed, so as to realize that the cutting component 02 can be used again only after a new cutting component 02 is installed after use, and realize the safe use of the instrument.

[0079] The present application provides a control system for an electric stapler. The component recognition module is used to judge whether the cutting component is normally connected to the stapler body, and the position detection module is used to judge whether the cutting component reaches the initial position of its cutting stroke. After the control module receives the valid signals output by the component recognition module and the position detection module, it will respond to the first firing signal output by the firing switch to prevent the firing action from being implemented when the cutting component is not installed or not correctly installed, resulting in misoperation or damage to the instrument.

[0080] See Figure 6 , which shows a schematic structural diagram of another control system for an electric stapler according to an embodiment of the present application. Based on the above embodiment, this control system:

[0081] As a preferred embodiment, this control system further includes:

[0082] A prompting module 4, configured to prompt information corresponding to the valid recognition signal when the valid recognition signal is received.

[0083] Specifically, the prompting module 4 is connected to the component recognition module 1, and generates corresponding prompting information according to the valid recognition signal output by the component recognition module 1. Specifically, the prompting module 4 may include first prompting devices corresponding to a plurality of cutting components 02 one by one. The first prompting devices may specifically be light-emitting diodes. The prompting module 4 can control the corresponding light-emitting diodes to light up according to the received valid recognition signal to remind the user that the cutting component 02 is properly installed with the stapler body 01, and different light-emitting diodes can indicate the cutting stroke of the currently installed cutting component 02.

[0084] Further, the prompting module 4 further includes a second prompting device corresponding to the power supply module in the stapler body 01, configured to indicate the voltage magnitude of the power supply module. The second prompting device may specifically be a light-emitting diode. When the power supply voltage is greater than a preset value, it controls the corresponding light-emitting diode to light up. When the power supply voltage is low, it controls the light-emitting diode to go out, thereby giving a prompt to the user. Among them, the power supply module may specifically include a battery.

[0085] Specifically, the specific circuit structure of the prompting module 4 provided in this embodiment may refer to Figure 7 as shown, including a first resistor R1, a first voltage stabilizing diode TVS, a first light-emitting diode D1, a second light-emitting diode D2, a third light-emitting diode D3, a fourth light-emitting diode, and an electromagnetic unit 41. Among them, the first resistor R1, the first light-emitting diode D1, and the first voltage stabilizing diode TVS are connected in series. The voltage of the first voltage stabilizing diode TVS may be 8.2V, the voltage drop of the first light-emitting diode D1 may be 2V, and the first resistor R1 is a current-limiting resistor. When the power supply voltage is greater than a preset voltage value (specifically 10.2V), the first light-emitting diode D1 lights up. When the power supply voltage is less than the preset voltage value, the first light-emitting diode D1 goes out to give a prompt to the user. Each prompting device is connected in series to the electromagnetic unit 41, and the electromagnetic unit 41 can play the role of on-off and current-limiting of the light-emitting diodes. After the electromagnetic unit 41 is turned on, the power supply for the instrument action of the electric stapler can be turned on. At this time, devices such as the firing switch are powered on and can output corresponding control signals. When the electromagnetic unit 41 is not turned on, the instrument action power supply is disconnected through the spring mechanism.

[0086] Correspondingly, when the recognition valid signal output by the component recognition module 1 corresponds to the cutting component 02 with a length of 30, the second light-emitting diode D2 lights up; when the recognition valid signal output by the component recognition module 1 corresponds to the cutting component 02 with a length of 45, the third light-emitting diode D3 lights up; when the recognition valid signal output by the component recognition module 1 corresponds to the cutting component 02 with a length of 60, the fourth light-emitting diode lights up; it can be understood that when there are cutting components 02 of other lengths, multiple light-emitting diodes can be set accordingly.

[0087] See Figure 8 , which shows a schematic structural diagram of another control system of an electric stapler according to an embodiment of the present application. Based on the above embodiment, this control system:

[0088] As a preferred embodiment, this control system further includes:

[0089] An empty staple cartridge protection module 5, which is used to perform an empty staple cartridge protection operation when the cutting component is an empty staple cartridge.

[0090] As a preferred embodiment, the cutting component 02 is provided with a push rod and a staple cartridge;

[0091] The empty staple cartridge protection module 5 includes:

[0092] A current limiting unit, which is used to limit the input current of the motor;

[0093] A staple pushing block, which is used to move forward under the action of the push rod; when the staple cartridge is an empty staple cartridge, the staple pushing block remains at the front of the staple cartridge;

[0094] The push rod is provided with a limiting portion, and the staple cartridge is provided with a groove. The limiting portion is used to make the push rod get stuck in the groove when the staple pushing block remains at the front of the staple cartridge.

[0095] As a preferred embodiment, the stapler body is further provided with a power supply module;

[0096] The current limiting unit includes a current limiting resistor and a fuse, where:

[0097] The first end of the current limiting resistor is connected to the power supply module, the second end of the current limiting resistor is connected to the first end of the fuse, and the second end of the fuse is connected to the motor.

[0098] As a preferred embodiment, the control module 3 specifically includes:

[0099] An execution unit, which is used to, after receiving the recognition valid signal and the initial point valid signal, control the cutting component 02 to perform a cutting and anastomosis operation according to the first firing signal received through the empty staple cartridge protection module 5 in the first working mode; and is further used to, after receiving a normal cutting instruction, control the cutting component 02 to perform a cutting and anastomosis operation according to the first firing signal received in the second working mode;

[0100] A judging unit is configured to judge whether the staple cartridge is an empty staple cartridge. If so, the empty staple cartridge protection module 5 is triggered. If not, a normal cutting instruction is generated.

[0101] Wherein, the input current of the motor corresponding to the first working mode is less than the input current of the motor corresponding to the second working mode.

[0102] Specifically, when it is determined that the first protrusion H1 on the rack contacts the initial point detection switch OPS, the position detection module 2 outputs an effective initial point signal. At this time, the user presses the firing switch, and the control module 3 restricts the input current of the motor through the empty staple cartridge protection module 5, so that the motor runs at a low speed, thereby controlling the cutting assembly 02 to move forward with a small force. When it is determined that the current cutting assembly 02 is an empty staple cartridge, the empty staple cartridge protection module 5 triggers an empty staple cartridge protection operation. The protection time is set between 0.1 - 5 s, preferably 3 s, and the striking force can be 1 / 2 to 1 / 10 of the normal striking force. It can be understood that when the first protrusion H1 moves forward and disengages from the initial point detection switch OPS, at this time, the control module 3 controls the motor to run with a large current, thereby controlling the cutting assembly 02 to move forward with a normal cutting force.

[0103] Specifically, the empty staple cartridge protection module 5 includes a fuse and a current limiting resistor. The current output by the power supply module flows through the fuse and the current limiting resistor and then reaches the motor. Due to the current limiting effect of the current limiting resistor, the motor is in a low-speed operation state. The first purpose of this embodiment is to reduce the mechanical and current impact during motor startup. The second is that since the motor runs with a low current, the cutting force of the cutting assembly 02 is small. If the cutting assembly 02 is an empty staple cartridge at this time, the motor cannot drive the push rod forward and cannot push the limiting block of the empty staple cartridge protection module 5. The continuous current causes the fuse to overheat and protect, disconnecting the power supply, thereby playing the role of empty staple cartridge protection.

[0104] The working principle of the limiting block is as follows: When the cutting assembly 02 is a full staple cartridge, the limiting block is in the initial position, and the limiting block and the push rod of the cutting assembly 02 are bridged. Under the action of the motor, the push rod can push the limiting block forward to perform suturing and cutting. When the cutting assembly 02 is an empty staple cartridge, the limiting block reaches the front of the staple cartridge, and the push rod of the cutting assembly 02 retracts, but the limiting block does not retract. At this time, if the cutting assembly 02 is used again, since there is no bridging between the limiting block and the push rod, the push rod will be stuck in the groove of the staple cartridge under the action of its limiting part and cannot move forward, thus ensuring the purpose that the push rod of the cutting assembly 02 cannot move forward when the limiting block is not in the initial position. Combined with the overheat protection of the fuse in the electrical part, the empty staple cartridge protection is realized.

[0105] On the other hand, the present application also provides an electric stapler, including the control system as described in any one of the above.

[0106] The electric stapler provided by the present application has the same beneficial effects as the above control system.

[0107] For the introduction of an electric stapler provided by the present application, please refer to the above embodiments, and the present application will not be elaborated herein.

[0108] It should also be noted that in this specification, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0109] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A control system for an electric stapler, the electric stapler comprising a stapler body and a cutting assembly connected to the stapler body, the stapler body being provided with a firing switch, characterized in that, The control system includes: a component identification module, configured to generate an identification valid signal when the cutting component is normally connected to the stapler body; a position detection module, configured to generate an initial point valid signal when the cutting component moves to the initial point; a control module, configured to, after receiving the identification valid signal and the initial point valid signal, control the cutting component to perform a cutting and stapling operation according to a first firing signal output by the firing switch; The stapler body further is provided with a motor, and the cutting component is provided with a staple cartridge; The control system further includes: an empty staple cartridge protection module, configured to perform an empty staple cartridge protection operation when the cutting component is an empty staple cartridge; The control module specifically includes: an execution unit, configured to, after receiving the identification valid signal and the initial point valid signal, control the cutting component to perform a cutting and stapling operation in a first working mode through the empty staple cartridge protection module according to the received first firing signal; and further configured to, after receiving a normal cutting instruction, control the cutting component to perform the cutting and stapling operation in a second working mode according to the received first firing signal; a judgment unit, configured to judge whether the staple cartridge is an empty staple cartridge, and if so, trigger the empty staple cartridge protection module, and if not, generate the normal cutting instruction; wherein, an input current of the motor corresponding to the first working mode is less than an input current of the motor corresponding to the second working mode.

2. The control system according to claim 1, characterized in that, The position detection module is further configured to: generate a in-place point valid signal when the cutting component moves to the in-place point; Correspondingly, the control module is further configured to, after receiving the in-place point valid signal, control the cutting component to perform a retraction operation according to a second firing signal output by the firing switch, and no longer respond to the first firing signal.

3. The control system according to claim 2, wherein The process of, after receiving the in-place point valid signal, controlling the cutting component to perform a retraction operation according to a second firing signal output by the firing switch is specifically: after receiving the in-place point valid signal, controlling the motor to brake through current short-circuit until receiving the second firing signal output by the firing switch, and controlling the cutting component to perform a retraction operation according to the second firing signal output by the firing switch.

4. The control system according to claim 3, characterized in that, The control module is further configured to, after controlling the cutting component to perform the retraction operation, control the motor to brake through current short-circuit.

5. The control system according to claim 4, wherein The control module is further configured to, after controlling the cutting component to perform the retraction operation and controlling the motor to brake through current short-circuit, control the motor to maintain a braking state through a magnetic latching relay.

6. The control system according to claim 2, characterized in that, The control module is further configured to, after the control system is powered on again and receives a new identification valid signal and a new initial point valid signal, respond to the first firing signal.

7. The control system according to claim 2, characterized in that, The stapler body is further provided with a rack; The position detection module includes: a protrusion provided on the rack; a travel detection switch configured to contact the protrusion when the protrusion moves to the initial point or the in-place point to generate the initial point valid signal or the in-place point valid signal.

8. The control system according to claim 7, wherein The protrusion includes a first protrusion and a second protrusion spaced apart by a preset distance; Correspondingly, the travel detection switch includes: An initial point detection switch that contacts the first protrusion when the first protrusion moves to the initial point; A in-place point detection switch that contacts the second protrusion when the second protrusion moves to the in-place point.

9. The control system according to claim 8, wherein The number of the in-place point detection switches is multiple, and the multiple in-place point detection switches are spaced apart along the movement direction of the rack; The electric stapler includes at least two switchable cutting assemblies connected to the stapler body, and the stroke of the cutting assembly corresponds to the position of the in-place point detection switch one by one.

10. The control system according to claim 9, wherein The component identification module is provided with at least two stroke identification contacts, and the stroke identification contacts are arranged at intervals along the installation direction of the cutting assembly; Wherein, the stroke identification contacts are connected in series with the in-place point detection switches one by one.

11. The control system according to claim 1, wherein, The control system further includes: A prompting module, configured to prompt information corresponding to the identification valid signal when receiving the identification valid signal.

12. The control system according to claim 1, wherein The cutting assembly is provided with a push rod; The empty staple cartridge protection module includes: A current limiting unit, configured to limit the input current of the motor; A staple pushing block, configured to move forward under the action of the push rod; when the staple cartridge is an empty staple cartridge, the staple pushing block remains at the front of the staple cartridge; The push rod is provided with a limiting portion, and the staple cartridge is provided with a groove, and the limiting portion is configured to make the push rod stuck in the groove when the staple pushing block remains at the front of the staple cartridge.

13. The control system according to claim 12, characterized in that, The stapler body is further provided with a power supply module; The current limiting unit includes a current limiting resistor and a fuse, wherein: The first end of the current limiting resistor is connected to the power supply module, the second end of the current limiting resistor is connected to the first end of the fuse, and the second end of the fuse is connected to the motor.

14. An electric stapler, characterized in that, Including the control system according to any one of claims 1-13.

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