Anastomat discharging circuit and anastomat

Abstract

The invention provides an anastomat discharging circuit and an anastomat, the anastomat discharging circuit is internally provided with a control module, a first transistor, a second transistor and a photoelectric coupler, the control module is used for sending a signal to the first transistor to control conduction of the first transistor, and then the second transistor is conducted, so that discharging is achieved; and the control module is also used for sending a signal to the photoelectric coupler to control the conduction of the photoelectric coupler, so that the second transistor is cut off to stop discharging. The discharge circuit provided by the invention is arranged in the disposable part of the anastomat, and after an operation is finished, the discharge circuit can be used for completely consuming residual electricity in the disposable part, so that the disposable part can be safely recycled and treated, and a safety protection effect is achieved; in addition, the discharging circuit is used for discharging efficiently and conveniently, and the production cost is effectively reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of medical devices, and more specifically, to a stapler discharge circuit and a stapler. Background Art

[0002] A stapler is a medical device used in surgical procedures to replace manual suturing, enabling quick and safe removal and closure of tissues and organs. Using pre-installed staples or wires, the stapler performs both cutting and suturing functions and is widely used in surgeries involving the gastrointestinal tract, liver, gallbladder, pancreas, spleen, chest, and lungs. It makes surgeries more efficient and convenient, while reducing risks associated with human error.

[0003] Currently, most staplers are split-type electric laparoscopic staplers, consisting of a reusable and disposable portion. After the procedure is complete, the disposable portion must be discarded, but it may contain residual power. Failure to discharge this power can lead to safety issues, such as battery-induced fires. Alternatively, electromagnetic relays are used to control battery discharge, but these are space-consuming and expensive. Summary of the Invention

[0004] In view of the above problems, the present disclosure provides a stapler discharge circuit and a stapler. The stapler discharge circuit is provided with a control module, a first transistor, a second transistor and a photocoupler. The control module is used to send a signal to the first transistor to control the conduction of the first transistor, thereby turning on the second transistor, thereby achieving discharge; the control module is also used to send a signal to the photocoupler to control the conduction of the photocoupler, thereby turning off the second transistor, thereby stopping discharge. The discharge circuit provided by the present disclosure is provided in the disposable part of the stapler. After the operation is completed, the discharge circuit can be used to consume the remaining power in the disposable part, so that the disposable part can be safely recycled and processed, playing a role of safety protection; in addition, the use of the discharge circuit for discharge is efficient and convenient, effectively reducing production costs.

[0005] According to one aspect of the present disclosure, there is provided a stapler discharge circuit, comprising:

[0006] A control module, the control module having a first signal terminal and a second signal terminal;

[0007] A first circuit includes a first transistor, wherein a base of the first transistor is connected to the first signal terminal, and an emitter of the first transistor is grounded;

[0008] a second circuit comprising a second transistor, wherein a base of the second transistor is connected to a collector of the first transistor, the collector of the second transistor is grounded via a first resistor, and an emitter of the second transistor is connected to a power supply via a second resistor;

[0009] The photoelectric coupler includes a first input terminal, a second input terminal, an output terminal and a ground terminal, wherein the first input terminal is connected to the second signal terminal, the second input terminal is connected to the power supply, and the output terminal is connected to the base of the second transistor.

[0010] According to an embodiment of the present disclosure, the resistance of the first resistor is between 49.9Ω and 100Ω, and the power of the first resistor is between 1W and 2W.

[0011] According to an embodiment of the present disclosure, the resistance of the second resistor is smaller than the resistance of the first resistor, and the power of the second resistor is between 1W and 2W.

[0012] According to an embodiment of the present disclosure, a diode, a third resistor and a fourth resistor are further provided on the first circuit, the anode of the diode is connected to the first signal terminal, the cathode of the diode is connected to the base of the first transistor through the fourth resistor, and the emitter of the first transistor is grounded through the third resistor.

[0013] According to an embodiment of the present disclosure, an indication circuit is further included, and the indication circuit is connected in parallel with the first resistor.

[0014] According to an embodiment of the present disclosure, a first light-emitting diode is provided on the indicating circuit, an anode of the first light-emitting diode is connected to the collector of the second transistor, and a cathode of the first light-emitting diode is grounded through a fifth resistor and a sixth resistor.

[0015] According to an embodiment of the present disclosure, the first transistor is an NPN transistor, and the second transistor is a PNP transistor.

[0016] According to an embodiment of the present disclosure, the photoelectric coupler includes:

[0017] a second light-emitting diode, wherein an anode of the second light-emitting diode is connected to the second signal terminal via a seventh resistor, and a cathode of the second light-emitting diode is grounded;

[0018] A phototransistor, wherein the collector of the phototransistor is connected to the power supply via an eighth resistor, and the emitter of the phototransistor is connected to the base of the second transistor via a ninth resistor.

[0019] According to an embodiment of the present disclosure, a tenth resistor is further included, and the tenth resistor is located in a circuit path for providing a base bias current for the second transistor.

[0020] According to one aspect of the present disclosure, there is provided a stapler comprising:

[0021] A disposable anastomosis firing device for performing tissue anastomosis, comprising any of the above-mentioned stapler discharge circuits;

[0022] A reusable driving handle is detachably connected to the anastomosis firing device and is used to drive the anastomosis firing device.

[0023] One or more of the above embodiments have the following beneficial effects:

[0024] The discharge circuit provided by the present invention is arranged in the disposable part of the anastomosis device. After the operation is completed, the discharge circuit can be used to consume the remaining power in the disposable part, so that the disposable part can be safely recycled and processed, thereby playing a role of safety protection; in addition, using the discharge circuit for discharge is efficient and convenient, effectively reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above contents and other objects, features and advantages of the present disclosure will become more apparent through the following description of the embodiments of the present disclosure with reference to the accompanying drawings, in which:

[0026] Figure 1 Shown is a circuit diagram of a control module provided in Example 1;

[0027] Figure 2 Shown is the discharge circuit diagram of the stapler provided in Example 1.

[0028] It should be noted that, for the sake of clarity, in the drawings used to describe the embodiments of the present disclosure, the sizes of the overall / local structures or overall / local areas may be enlarged or reduced, that is, these drawings are not drawn according to the actual scale. DETAILED DESCRIPTION

[0029] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present disclosure. In the detailed description below, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present disclosure. However, it is apparent that one or more embodiments may also be implemented without these specific details. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present disclosure.

[0030] The terms used herein are only for describing specific embodiments and are not intended to limit the present disclosure. The terms "comprise," "include," etc. used herein indicate the presence of the features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0031] All terms used herein (including technical and scientific terms) have the meanings commonly understood by those skilled in the art unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification and should not be interpreted in an idealized or overly rigid manner.

[0032] When expressions such as "at least one of A, B, and C, etc." are used, they should generally be interpreted in accordance with the meaning commonly understood by those skilled in the art (for example, "a system having at least one of A, B, and C" should include but is not limited to a system having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, C, etc.).

[0033] Example 1

[0034] This embodiment provides a stapler discharge circuit, including a control module, a first circuit, a second circuit and a photoelectric coupler, wherein the control module has a first signal terminal and a second signal terminal for outputting signals to the first circuit and the photoelectric coupler.

[0035] like Figure 1 As shown, in this embodiment, the control module includes a microcontroller unit (MCU) and its supporting peripheral circuits. MCU chip U1 utilizes a single-chip microcomputer. Chip U1 communicates with external devices through its serial port UART1. For example, data is sent to an external device via pin 2 and received from an external device via pin 3. Chip U1 also has general-purpose input / output (GPIO) functionality, allowing it to generate high and low-level signals through GPIO pins to control external components. For example, in this embodiment, pin 14 serves as the control module's first signal terminal, outputting a high-level signal to the first circuit. Pin 13 serves as the control module's second signal terminal, outputting a low-level signal to the optocoupler.

[0036] In other optional embodiments, the control module may also be a device capable of implementing the control function, such as a digital signal processor (DSP), a field-programmable gate array (FPGA), etc., which is not limited here.

[0037] like Figure 2 As shown, the first circuit is provided with a diode D1, a first transistor Q1, a third resistor R3, and a fourth resistor R4. The anode of the diode D1 is connected to the first signal terminal of the control module, and the cathode of the diode D1 is connected to the base of the first transistor Q1 via the fourth resistor R4. The emitter of the first transistor Q1 is grounded via the third resistor R3, and the collector of the first transistor Q1 is connected to the second circuit.

[0038] In this embodiment, the first transistor Q1 is an NPN transistor, which is turned on when a forward bias voltage is applied to the base of the first transistor Q1 , allowing current to flow from the collector to the emitter.

[0039] As an example, the third resistor R3 and the fourth resistor R4 are both current limiting resistors, which are used to control the current in the circuit and reduce the current flowing through the circuit by increasing the total resistance of the circuit to protect other components in the circuit from damage by excessive current; the resistance of the current limiting resistor depends on the current to be limited and the power supply voltage. In this embodiment, the resistance of the third resistor R3 is 1kΩ, and the resistance of the fourth resistor R4 is 1kΩ.

[0040] like Figure 2 As shown, the second circuit is provided with a second transistor Q2, a first resistor R1, a second resistor R2, and a ninth resistor R9. The emitter of the second transistor Q2 is connected to the power supply via the second resistor R2, the collector of the second transistor Q2 is grounded via the first resistor R1, and the base of the second transistor Q2 is connected to the collector of the first transistor Q1 via the ninth resistor R9.

[0041] As an example, the power supply is a battery pack composed of multiple batteries, which is arranged in the disposable part of the stapler and is used to power the stapler. In this embodiment, the voltage of the power supply is 12V.

[0042] In this embodiment, the second transistor Q2 is a PNP transistor. When the base of the second transistor Q2 is negatively biased relative to the emitter, the second transistor Q2 is turned on, allowing current to flow from the emitter to the collector.

[0043] As an example, the first resistor R1 and the second resistor R2 are both load resistors, which are used to consume the power of the power supply and convert electrical energy into heat energy, thereby achieving discharge. The resistance of the first resistor R1 is between 49.9Ω and 100Ω, preferably 100Ω; the power of the first resistor R1 is between 1W and 2W, preferably 2W, and the greater the power, the faster the discharge. The resistance of the second resistor R2 is smaller than the resistance of the first resistor R1. The second resistor R2 and the first resistor R1 form a voltage divider circuit, providing a bias voltage for the base of the second transistor Q2, so that a voltage difference is formed between the emitter and the base of the second transistor Q2, thereby controlling the conduction degree of the second transistor Q2; the power of the second resistor R2 is between 1W and 2W, preferably 2W, and the greater the power, the faster the discharge.

[0044] As an example, the ninth resistor R9 is a variable resistor. By varying the resistance of the ninth resistor R9, the base current of the second transistor Q2 can be adjusted, thereby precisely controlling the conduction level of the second transistor Q2, allowing it to operate in various states, such as amplification, saturation, or cutoff, to meet the specific functional requirements of the circuit. Furthermore, when an abnormality occurs in the circuit, such as a power supply voltage fluctuation or other component failure causing the current to increase, the ninth resistor R9 can limit the current, thereby improving the stability and reliability of the entire circuit.

[0045] As an example, a tenth resistor R10 is provided in the base circuit of the second transistor Q2. One end of the tenth resistor R10 is connected to the conductive line between the second resistor R2 and the base of the second transistor Q2, and the other end is connected to the node connected to the ninth resistor R9. This provides a circuit path for providing base bias current for the second transistor Q2. When current flows through the tenth resistor R10, a voltage drop is generated across the tenth resistor R10. This voltage drop affects the potential of the base of the second transistor Q2, forming a certain voltage difference between the base and the emitter, thereby controlling the on and off states of the second transistor Q2.

[0046] like Figure 2 As shown, the stapler discharge circuit provided in this embodiment also includes an indicator circuit, which is connected in parallel with the first resistor R1. The indicator circuit is provided with a first light-emitting diode LED1, the anode of which is connected to the collector of the second transistor Q2, and the cathode of which is grounded via the fifth resistor R5 and the sixth resistor R6.

[0047] As an example, the first light-emitting diode (LED1) is used to indicate whether the power supply has completed discharge. During discharge, current flows from the collector of the second transistor (Q2) to the first resistor (R1) and the first light-emitting diode (LED1), respectively, causing the first light-emitting diode (LED1) to illuminate. When the current is insufficient to drive the first light-emitting diode (LED1) to illuminate, discharge is complete, and the device can be safely recycled or stored.

[0048] As an example, the fifth resistor R5 and the sixth resistor R6 are both current limiting resistors, which are used to control the current in the circuit and reduce the current flowing through the circuit by increasing the total resistance of the circuit to protect other components in the circuit from damage by excessive current; the resistance of the current limiting resistor depends on the current to be limited and the power supply voltage. In this embodiment, the resistance of the fifth resistor R5 is 4.99kΩ, and the resistance of the sixth resistor R6 is 1kΩ.

[0049] like Figure 2 As shown, the optocoupler U2 has a first input terminal 101, a second input terminal 102, an output terminal 103, and a ground terminal 104. The first input terminal 101 is connected to the second signal terminal of the control module, that is, connected to pin 13 of the MCU chip. The MCU chip sends a low-level signal to the optocoupler U2 through pin 13; the second input terminal 102 is connected to the power supply; and the output terminal 103 is connected to the base of the second transistor Q2.

[0050] like Figure 2 As shown, optocoupler U2 includes a second light-emitting diode (LED) and a phototransistor (PT). The anode of the second LED serves as a first input terminal 101, and the cathode of the second LED serves as a ground terminal 104. The collector of the phototransistor serves as a second input terminal 102, and the emitter of the phototransistor serves as an output terminal 103. Driven by a low-level signal, the second LED emits light. The light signal passes through an isolated optical channel, is received by the phototransistor, and converted into an electrical signal. The phototransistor then conducts, and current flows from the power supply to the base of the second transistor Q2.

[0051] As an example, a seventh resistor R7 is provided between the first input terminal 101 and the second signal terminal of the control module, and an eighth resistor R8 is provided between the second input terminal 102 and the power supply. Both the seventh resistor R7 and the eighth resistor R8 are current-limiting resistors, used to control the current in the circuit by increasing the total resistance of the circuit to reduce the current flowing through the circuit, thereby protecting other components in the circuit from damage caused by excessive current. The resistance of the current-limiting resistors depends on the current to be limited and the power supply voltage. In this embodiment, the resistance of the seventh resistor R7 is 10Ω, and the resistance of the eighth resistor R8 is 10Ω.

[0052] The working principle of the stapler discharge circuit provided in this embodiment is as follows:

[0053] When chip U1 receives a battery discharge command via serial port UART1, it generates a high-level signal and outputs the high-level signal to the first circuit through the first signal terminal. The high-level signal reaches the base of the first transistor Q1 through diode D1, turning on the first transistor Q1. The second transistor Q2 is connected to ground via the ninth resistor R9 and the collector and emitter of the first transistor Q1, turning on the second transistor Q2. The power supply discharges through the second resistor R2 and the first resistor R1. During the discharge process, the first light-emitting diode LED1 emits light. When the discharge is complete, the first light-emitting diode LED1 turns off, indicating that the power supply has been largely depleted and the device can be safely recycled and stored.

[0054] When chip U1 receives a battery discharge stop command via serial port UART1, it generates a low-level signal and outputs the low level to the optocoupler through the second signal terminal. Driven by the low-level signal, the second light-emitting diode emits light. The light signal passes through the isolated optical channel and is received by the phototransistor, which converts it into an electrical signal. The phototransistor then turns on, and current flows from the power supply to the base of the second transistor Q2. The base of the second transistor Q2 is then connected to the power supply via the ninth resistor R9, the optocoupler U2, and the eighth resistor R8. At this point, the second transistor Q2 turns off, and the power supply stops discharging.

[0055] Example 2

[0056] This embodiment provides a stapler comprising a stapling firing mechanism and a driving handle. The stapling firing mechanism is a disposable component used to perform tissue stapling and includes the stapler discharge circuit provided in Example 1. The driving handle is a reusable component that is detachably connected to the stapling firing mechanism and is used to actuate the stapling firing mechanism.

[0057] After the stapler completes the procedure, the stapler trigger mechanism needs to be separated from the drive handle. Before separation, the drive handle sends a discharge command to the MCU chip U1. Upon receiving the command, the MCU chip U1 generates a discharge signal, causing the stapler trigger mechanism to discharge. At this point, the stapler trigger mechanism can be separated from the drive handle. When the first light-emitting diode (LED1) in the stapler trigger mechanism turns off, indicating that discharge is complete, the stapler trigger mechanism can be safely recovered and stored.

[0058] When performing surgery using the stapler provided in this embodiment, after the surgery is completed, the discharge circuit can be used to consume the remaining power in the anastomotic firing device, so that the anastomotic firing device can be safely recovered and disposed of, thereby playing a safety protection role; in addition, using the discharge circuit for discharge is efficient and convenient, effectively reducing production costs.

[0059] The embodiments of the present disclosure are described above. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of the present disclosure. Although each embodiment has been described separately above, this does not mean that the measures in each embodiment cannot be used in combination to advantage. The scope of the present disclosure is defined by the appended claims and their equivalents. Without departing from the scope of the present disclosure, those skilled in the art may make various substitutions and modifications, which should all fall within the scope of the present disclosure.

Claims

1. A stapler discharge circuit, characterized in that: include: A control module, wherein the control module has a first signal terminal and a second signal terminal; A first circuit includes a first transistor, wherein a base of the first transistor is connected to the first signal terminal, and an emitter of the first transistor is grounded; a second circuit comprising a second transistor, wherein a base of the second transistor is connected to a collector of the first transistor, the collector of the second transistor is grounded via a first resistor, and an emitter of the second transistor is connected to a power supply via a second resistor; The photoelectric coupler includes a first input terminal, a second input terminal, an output terminal and a ground terminal, wherein the first input terminal is connected to the second signal terminal, the second input terminal is connected to the power supply, and the output terminal is connected to the base of the second transistor.

2. The stapler discharge circuit according to claim 1, characterized in that: The resistance of the first resistor is between 49.9Ω and 100Ω, and the power of the first resistor is between 1W and 2W.

3. The stapler discharge circuit according to claim 2, characterized in that: The resistance of the second resistor is smaller than the resistance of the first resistor, and the power of the second resistor is between 1W and 2W.

4. The stapler discharge circuit according to claim 1, characterized in that: The first circuit is further provided with a diode, a third resistor and a fourth resistor. The anode of the diode is connected to the first signal terminal, the cathode of the diode is connected to the base of the first transistor through the fourth resistor, and the emitter of the first transistor is grounded through the third resistor.

5. The stapler discharge circuit according to claim 1, characterized in that: The device further includes an indication circuit connected in parallel with the first resistor.

6. The stapler discharge circuit according to claim 5, characterized in that: The indicating circuit is provided with a first light emitting diode, an anode of the first light emitting diode is connected to the collector of the second transistor, and a cathode of the first light emitting diode is grounded via a fifth resistor and a sixth resistor.

7. The stapler discharge circuit according to claim 1, characterized in that: The first transistor is an NPN transistor, and the second transistor is a PNP transistor.

8. The stapler discharge circuit according to claim 1, characterized in that: The photoelectric coupler comprises: a second light-emitting diode, wherein an anode of the second light-emitting diode is connected to the second signal terminal via a seventh resistor, and a cathode of the second light-emitting diode is grounded; A phototransistor, wherein the collector of the phototransistor is connected to the power supply via an eighth resistor, and the emitter of the phototransistor is connected to the base of the second transistor via a ninth resistor.

9. The stapler discharge circuit according to claim 1, characterized in that: A tenth resistor is also included, and the tenth resistor is located in a circuit path for providing a base bias current for the second transistor.

10. A stapler, characterized in that: include: A disposable stapling firing device for performing tissue stapling function, comprising the stapling device discharge circuit according to any one of claims 1 to 9; A reusable driving handle is detachably connected to the anastomosis firing device and is used to drive the anastomosis firing device.

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