Surgical anastomosis instrument

Abstract

A surgical stapling instrument includes a handle including a motor, a control circuit electrically connected to the motor, and a button electrically connected to the control circuit; and a loading unit releasably connected to the handle, comprising a cutting member mechanically connected to the motor; wherein the control circuit comprises a microcontroller and a logic circuit electrically connected to the microcontroller, the microcontroller is electrically connected to the button, and the logic circuit is electrically connected between the button and the motor; when the button is actuated, the control circuit can control the motor to drive the cutting component to move towards the far side. When the button is not actuated, even if the microcontroller sends an advance signal, the logic circuit prevents the motor from driving the cutting member to move distally. The control circuit prevents the motor from mistakenly driving the cutting component to move towards the far side, so that normal tissue is prevented from being damaged, and the instrument is prevented from being damaged.

Description

Technical Field

[0001] The invention relates to medical instruments, in particular to a surgical anastomosis instrument. Background Art

[0002] Staplers are used for cutting, severing and stapling human tissues. In open surgery, staplers replace traditional suturing instruments. In minimally invasive surgery, laparoscopic staplers have become dominant. In order to meet the needs of automated surgery, electric laparoscopic staplers are constantly developing. Electric laparoscopic staplers use control circuits to achieve automated operation.

[0003] In an electric laparoscopic stapler, the forward button is pressed by the doctor, the microcontroller receives the signal of the forward button, and controls the motor to rotate to drive the cutting member forward. However, if the forward button is not pressed, and the failed microcontroller sends a forward signal, the motor mistakenly drives the cutting member forward, which may injure normal tissue and damage the instrument. Summary of the invention

[0004] Therefore, electric laparoscopic staplers require hardware protection to avoid harming normal tissues and damaging the instrument.

[0005] The present invention provides a surgical stapling instrument, which includes: a handle, which includes a motor, a control circuit electrically connected to the motor and a button electrically connected to the control circuit; and a loading unit releasably connected to the handle, which includes a cutting member mechanically connected to the motor; wherein the control circuit includes a microcontroller and a logic circuit electrically connected to the microcontroller, the microcontroller is electrically connected to the button, and the logic circuit is electrically connected between the button and the motor; when the button is actuated, the control circuit is capable of controlling the motor to drive the cutting member to move distally; when the button is not actuated, even if the microcontroller sends a forward signal, the logic circuit prevents the motor from driving the cutting member to move distally.

[0006] The control circuit prevents the motor from mistakenly driving the cutting member to move distally, thereby avoiding hurting normal tissue and damaging the instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In order to intuitively and vividly understand each technical feature and the overall technical solution of the present invention, the accompanying drawings use graphics to supplement the description of the text part of the implementation method:

[0008] Figure 1 is a perspective view of an exemplary surgical stapling instrument;

[0009] Figure 2 yes Figure 1 a perspective view of the handle shown;

[0010] Figure 3 yes Figure 2 a partial perspective view of the handle shown;

[0011] Figure 4 yes Figure 3 a perspective view of the drive assembly shown;

[0012] Figure 5 yes Figure 1 a perspective view of the loading unit shown;

[0013] Figure 6 yes Figure 5 a cross-sectional view of the loading unit shown;

[0014] Figure 7 yes Figure 3 The structural diagram of the control circuit shown;

[0015] Figure 8 yes Figure 7 A block diagram of the logic circuit shown;

[0016] Fig. 9 is a perspective view of an exemplary circuit board. DETAILED DESCRIPTION

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0018] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0020] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0021] like Figure 1 As shown, the surgical stapling instrument 10 includes a handle 11, a shaft assembly 20 and a loading unit 30. The shaft assembly 20 defines a longitudinal axis x extending from the proximal side to the distal side. The proximal end of the shaft assembly 20 is rotatably connected to the distal end of the handle 11, and the proximal end of the loading unit 30 is releasably connected to the distal end of the shaft assembly 20.

[0022] like Figures 1 to 4 As shown in FIG. 7 , the handle 11 includes a handle housing 12, a frame 13, a drive assembly 14, a control circuit 15, a power supply 16, and a control button 17. The handle housing 12 fixes the frame 13, and the frame 13 is connected to the shaft assembly 20. The drive assembly 14 includes a motor 141, a first gear 1421, a second gear 1422, and a drive member 143. The drive member 143 can be a rack. The motor 141 is fixed to the frame 13, and the frame 13 provides a rotation axis for the second gear 1422 and a guide rail for the drive member 143. The motor 141 can drive the first gear 1421 and the second gear 1422 to rotate, and move the drive member 143 on the longitudinal axis x. The control circuit 15 is fixed to the frame 13 or the handle housing 12. The control circuit 15 includes a microcontroller 153 to control the drive of the motor 141. The power supply 16 can be a battery pack to provide electrical energy for the instrument to be portable. The control button 17 includes buttons 171 and 172 electrically connected to the microcontroller 153. When the doctor presses button 171, the microcontroller 153 can send a forward signal to the motor 141 to move the drive member 143 toward the distal side. At the same time, the forward indicator light is lit. When the doctor presses button 172, the microcontroller 153 can send a backward signal to the motor 141 to move the drive member 143 toward the proximal side. At the same time, the backward indicator light is lit.

[0023] like Figure 5 and 6As shown, the loading unit 30 includes a main body 31, a jaw member 32 and a cutting member 36. The distal end of the main body 31 is connected to the proximal end of the jaw member 32. The jaw member 32 includes a staple cartridge 33 having a first longitudinal slot and staples (not shown) and an anvil 34 having a second longitudinal slot (not shown). The cutting member 36 can move along the first longitudinal slot and the second longitudinal slot. The staple cartridge 33 can be opened to closed relative to the anvil 34 so that the staples are pushed out to the anvil 34 to suture the tissue. Then, the cutting member 36 can cut the tissue while moving distally. The structure of the loading unit 30 is detailed in Chinese patent application 201510672007.2.

[0024] The shaft assembly 20 includes a firing rod (not shown). The distal end of the firing rod is connected to the cutting member 36, and the proximal end of the firing rod is connected to the drive member 143. The drive member 143 moves distally with the firing rod and the cutting member 36 when moving distally. The drive member 143 moves proximally with the firing rod and the cutting member 36 when moving proximally. The structure of the shaft assembly 20 is detailed in Chinese patent application 202411433503.8.

[0025] The loading unit 30 may be a first loading unit with a nail line length of 60 mm, a second loading unit with a nail line length of 45 mm, or a third loading unit with a nail line length of 30 mm. If the first loading unit is mounted on the shaft assembly 20, the control circuit 15 can identify the first loading unit. If the second loading unit is mounted on the shaft assembly 20, the control circuit 15 can identify the second loading unit. If the third loading unit is mounted on the shaft assembly 20, the control circuit 15 can identify the third loading unit. For details on the identification of the loading unit 30, see Chinese patent application 202411433511.2.

[0026] like Fig. 9As shown, the control circuit 15 includes a circuit board 150 electrically connected to a microcontroller 153. The circuit board 150 includes a first switch 1521, a second switch 1521, a third switch 1521, and a fourth switch 1521 arranged from the proximal side to the distal side. Each of the four switches 1521 has a key 1522. Meanwhile, the drive member 143 has a protrusion 1431. When the drive member 143 is located at the initial position, the protrusion 1431 presses the first switch 1521 to send a first switch signal to the microcontroller 153. When the drive member 143 moves a first displacement T1 toward the distal side, the protrusion 1431 presses the second switch 1521 to send a second switch signal to the microcontroller 153. The first displacement T1 corresponds to the firing stroke of the third loading unit. When the drive member 143 moves a second displacement T2 toward the distal side, the protrusion 1431 presses the third switch 1521 to send a third switch signal to the microcontroller 153. The second displacement T2 corresponds to the firing stroke of the second loading unit. When the driving member 143 moves distally by a third displacement T3, the protrusion 1431 presses the fourth switch 1521 to send a fourth switch signal to the microcontroller 153. The third displacement T3 corresponds to the firing stroke of the first loading unit.

[0027] If the first loading unit is connected to the handle 11, the microcontroller 153 should send a non-advance signal in response to the fourth switch signal to stop the cutting member 36 from moving distally. If the second loading unit is connected to the handle 11, the microcontroller 153 should send a non-advance signal in response to the third switch signal to stop the cutting member 36 from moving distally. If the third loading unit is connected to the handle 11, the microcontroller 153 should send a non-advance signal in response to the second switch signal to stop the cutting member 36 from moving distally.

[0028] In an embodiment, the surgical stapling instrument 10 includes: a handle 11, which includes a motor 141, a control circuit 15 electrically connected to the motor 141, and a button 171 electrically connected to the control circuit 15; and a loading unit 30 releasably connected to the handle 11, which includes a cutting member 36 mechanically connected to the motor 141; wherein the control circuit 15 includes a microcontroller 153 and a logic circuit 154 electrically connected to the microcontroller 153, the microcontroller 153 is electrically connected to the button 171, and the logic circuit 154 is electrically connected between the button 171 and the motor 141; when the button 171 is actuated, the control circuit 15 is capable of controlling the motor 141 to drive the cutting member 36 to move distally; when the button 171 is not actuated, even if the microcontroller 153 sends a forward signal, the logic circuit 154 prevents the motor 141 from driving the cutting member 36 to move distally. The control circuit 15 prevents the motor 141 from mistakenly driving the cutting member 36 to move distally, so as not to hurt normal tissue and damage the instrument.

[0029] If the first loading unit is connected to the handle 11, when the button 171 is not actuated, the logic circuit 154 prevents the motor 141 from driving the cutting member 36 to move distally even if the microcontroller 153 does not respond to the fourth switch signal and still sends the advance signal. If the second loading unit is connected to the handle 11, when the button 171 is not actuated, the logic circuit 154 prevents the motor 141 from driving the cutting member 36 to move distally even if the microcontroller 153 does not respond to the third switch signal and still sends the advance signal. If the third loading unit is connected to the handle 11, when the button 171 is not actuated, the logic circuit 154 prevents the motor 141 from driving the cutting member 36 to move distally even if the microcontroller 153 does not respond to the second switch signal and still sends the advance signal.

[0030] like Figure 7 As shown, the control circuit 15 also includes a driving circuit 155 electrically connected between the logic circuit 154 and the motor 141, and the microcontroller 153 includes a first terminal 1531 and a second terminal 1532; wherein the first terminal 1531 and the second terminal 1532 are electrically connected to the logic circuit 154, and the first terminal 1531 and the logic circuit 154 are electrically connected to the driving circuit 155.

[0031] Table 1

[0032]

[0033] As shown in Table 1, the drive circuit 155 has two input terminals and two output terminals. When both input terminals of the drive circuit 155 are 0, both output terminals have no signal. At this time, the motor 141 does not drive or stop the cutting member 36. When the first input terminal of the drive circuit 155 is 0 and the second input terminal is 1, the first output terminal is L and the second output terminal is H. At this time, the motor 141 performs a backward drive to move the cutting member 36 toward the proximal side. When the first input terminal of the drive circuit 155 is 1 and the second input terminal is 0, the first output terminal is H and the second output terminal is L. At this time, the motor 141 performs a forward drive to move the cutting member 36 toward the distal side. When both input terminals of the drive circuit 155 are 1, both output terminals are L. At this time, the motor 141 performs a brake drive to stop the movement of the cutting member 36.

[0034] The logic circuit 154 has a plurality of input terminals and an output terminal. The output terminal of the logic circuit 154 is electrically connected to the first input terminal of the drive circuit 155. At the same time, the first terminal 1531 is electrically connected to the second input terminal of the drive circuit 155. When the button 171 is not actuated, the first terminal 1531 or the second terminal 1532 can send 0 or 1. However, if the first terminal 1531 sends 0 to the second input terminal of the drive circuit 155, the output terminal of the logic circuit 154 can only send 0 to the first input terminal of the drive circuit 155. In this way, the motor 141 does not perform forward drive to prevent the cutting member 36 from moving toward the distal side.

[0035] Specifically, when the button 171 is not actuated, if both the first terminal 1531 and the second terminal 1532 are first signals, the logic circuit 154 controls the motor 141 to stop the movement of the cutting member 36. The first signal is 1, and the second signal is 0. The first terminal 1531 sends 1 to the second input terminal of the drive circuit 155. The second terminal 1532 also sends 1. Then, the output terminal of the logic circuit 154 also sends 1 to the first input terminal of the drive circuit 155. In this way, the motor 141 performs a brake drive to stop the movement of the cutting member 36.

[0036] In other embodiments, when the button 171 is not actuated, if the first terminal 1531 is a first signal and the second terminal 1532 is a second signal, the logic circuit 154 controls the motor 141 to drive the cutting member 36 to move toward the proximal side. The first terminal 1531 sends 1 to the second input terminal of the drive circuit 155. The second terminal 1532 sends 0. Then, the output terminal of the logic circuit 154 also sends 0 to the first input terminal of the drive circuit 155. In this way, the motor 141 performs a backward drive to move the cutting member 36 toward the proximal side.

[0037] In other embodiments, when the button 171 is not actuated, if the first terminal 1531 is the second signal and the second terminal 1532 is the first signal or the second signal, the logic circuit 154 does not control the motor 141 to drive or stop the cutting member 36. The first terminal 1531 sends 0 to the second input terminal of the driving circuit 155. The second terminal 1532 sends 1 or 0. Then, the output terminal of the logic circuit 154 also sends 0 to the first input terminal of the driving circuit 155. In this way, the motor 141 does not drive or stop the cutting member 36.

[0038] like Figure 8As shown, the logic circuit 154 includes a first logic gate 1541, a second logic gate 1542 electrically connected to the first logic gate 1541, and a third logic gate 1543 electrically connected to the second logic gate 1542; wherein the first logic gate 1541 is electrically connected to the button 171, the second logic gate 1542 is also electrically connected to the first terminal 1531, and the third logic gate 1543 is also electrically connected to the second terminal 1532 and the drive circuit 155.

[0039] The first logic gate 1541 has one input and one output as a NOT gate. The second logic gate 1542 has two inputs and one output as an OR gate. The third logic gate 1543 has two inputs and one output as an AND gate. The input of the first logic gate 1541 is electrically connected to the button 171. The output of the first logic gate 1541 is electrically connected to the first input of the second logic gate 1542. The second input of the second logic gate 1542 is electrically connected to the first terminal 1531. The output of the second logic gate 1542 is electrically connected to the first input of the third logic gate 1543. The second input of the third logic gate 1543 is electrically connected to the second terminal 1532. The output of the third logic gate 1543 is electrically connected to the first input of the driving circuit 155 as the output of the logic circuit 154. In this way, the logic circuit 154 can control the motor 141 to perform brake drive, reverse drive or no drive.

[0040] Table 2

[0041]

[0042] As shown in Table 2, when the button 171 is not actuated, if both the first terminal 1531 and the second terminal 1532 are the first signal, the first logic gate 1541 sends the second signal, the second logic gate 1542 sends the first signal, and the third logic gate 1543 sends the first signal. The button 171 sends 1 to the input terminal of the first logic gate 1541 when it is not actuated. Then, the output terminal of the first logic gate 1541 sends 0 to the first input terminal of the second logic gate 1542. At the same time, the first terminal 1531 sends 1 to the second input terminal of the second logic gate 1542 and the driving circuit 155. Then, the output terminal of the second logic gate 1542 sends 1 to the first input terminal of the third logic gate 1543. At the same time, the second terminal 1532 sends 1 to the second input terminal of the third logic gate 1543. Then, the output terminal of the third logic gate 1543 sends 1 to the first input terminal of the driving circuit 155. In this way, the motor 141 performs a brake drive to stop the movement of the cutting member 36.

[0043] In other embodiments, when the button 171 is not actuated, if the first terminal 1531 is a first signal and the second terminal 1532 is a second signal, the first logic gate 1541 sends the second signal, the second logic gate 1542 sends the first signal, and the third logic gate 1543 sends the second signal. The button 171 sends 1 to the input terminal of the first logic gate 1541 when it is not actuated. Then, the output terminal of the first logic gate 1541 sends 0 to the first input terminal of the second logic gate 1542. At the same time, the first terminal 1531 sends 1 to the second logic gate 1542 and the second input terminal of the driving circuit 155. Then, the output terminal of the second logic gate 1542 sends 1 to the first input terminal of the third logic gate 1543. At the same time, the second terminal 1532 sends 0 to the second input terminal of the third logic gate 1543. Then, the output terminal of the third logic gate 1543 sends 0 to the first input terminal of the driving circuit 155. In this way, the motor 141 performs a backward drive to move the cutting member 36 toward the proximal side.

[0044] In other embodiments, when the button 171 is not actuated, if the first terminal 1531 is the second signal and the second terminal 1532 is the first signal or the second signal, the first logic gate 1541 sends the second signal, the second logic gate 1542 sends the second signal, and the third logic gate 1543 sends the second signal. The button 171 sends 1 to the input terminal of the first logic gate 1541 when it is not actuated. Then, the output terminal of the first logic gate 1541 sends 0 to the first input terminal of the second logic gate 1542. At the same time, the first terminal 1531 sends 0 to the second logic gate 1542 and the second input terminal of the driving circuit 155. Then, the output terminal of the second logic gate 1542 sends 0 to the first input terminal of the third logic gate 1543. At the same time, the second terminal 1532 sends 1 or 0 to the second input terminal of the third logic gate 1543. Then, the output terminal of the third logic gate 1543 sends 0 to the first input terminal of the driving circuit 155. In this way, the motor 141 does not drive or stop the cutting member 36.

[0045] like Fig. 9As shown, the handle 11 further includes a drive member 143 and a plurality of switches 1521 that can be actuated in response to the drive member 143; wherein the drive member 143 is mechanically connected between the motor 141 and the cutting member 36, and the switches 1521 are electrically connected to the microcontroller 153; when the button 171 is actuated, the control circuit 15 can stop the driving of the motor 141 according to the actuation of the switches 1521. If the first loading unit is connected to the handle 11, the control circuit 15 can stop the driving of the motor 141 according to the actuation of the fourth switch 1521. If the second loading unit is connected to the handle 11, the control circuit 15 can stop the driving of the motor 141 according to the actuation of the third switch 1521. If the third loading unit is connected to the handle 11, the control circuit 15 can stop the driving of the motor 141 according to the actuation of the second switch 1521.

[0046] In summary, the surgical stapling instrument 10 includes: a handle 11, which includes a motor 141, a control circuit 15 electrically connected to the motor 141, and a button 171 electrically connected to the control circuit 15; and a loading unit 30 releasably connected to the handle 11, which includes a cutting member 36 mechanically connected to the motor 141; wherein the control circuit 15 includes a microcontroller 153 and a logic circuit 154 electrically connected to the microcontroller 153, the microcontroller 153 is electrically connected to the button 171, and the logic circuit 154 is electrically connected between the button 171 and the motor 141. The control circuit 15 also includes a drive circuit 155 electrically connected between the logic circuit 154 and the motor 141, and the microcontroller 153 includes a first terminal 1531 and a second terminal 1532; wherein the first terminal 1531 and the second terminal 1532 are electrically connected to the logic circuit 154, and the first terminal 1531 and the logic circuit 154 are electrically connected to the drive circuit 155. The logic circuit 154 includes a first logic gate 1541, a second logic gate 1542 electrically connected to the first logic gate 1541, and a third logic gate 1543 electrically connected to the second logic gate 1542; wherein the first logic gate 1541 is electrically connected to the button 171, the second logic gate 1542 is also electrically connected to the first terminal 1531, and the third logic gate 1543 is also electrically connected to the second terminal 1532 and the driving circuit 155. When the button 171 is actuated, the control circuit 15 can control the motor 141 to drive the cutting member 36 to move distally; when the button 171 is not actuated, even if the microcontroller 153 sends a forward signal, the logic circuit 154 prevents the motor 141 from driving the cutting member 36 to move distally. The control circuit 15 prevents the motor 141 from driving the cutting member 36 to move distally by mistake, so as to avoid hurting normal tissue and damaging the instrument.

[0047] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A surgical anastomosis instrument, characterized in that: include: A handle (11) comprising a motor (141), a control circuit (15) electrically connected to the motor (141), and a button (171) electrically connected to the control circuit (15); and a loading unit (30) releasably connected to the handle (11), comprising a cutting member (36) mechanically connected to the motor (141); The control circuit (15) comprises a microcontroller (153) and a logic circuit (154) electrically connected to the microcontroller (153); the microcontroller (153) is electrically connected to the button (171); and the logic circuit (154) is electrically connected between the button (171) and the motor (141); When the button (171) is actuated, the control circuit (15) can control the motor (141) to drive the cutting member (36) to move distally; When the button (171) is not actuated, the logic circuit (154) prevents the motor (141) from driving the cutting member (36) to move distally even if the microcontroller (153) sends a forward signal.

2. The surgical stapling instrument according to claim 1, characterized in that: The control circuit (15) further comprises a driving circuit (155) electrically connected between the logic circuit (154) and the motor (141); the microcontroller (153) comprises a first terminal (1531) and a second terminal (1532); The first terminal (1531) and the second terminal (1532) are electrically connected to the logic circuit (154), and the first terminal (1531) and the logic circuit (154) are electrically connected to the drive circuit (155).

3. The surgical stapling instrument according to claim 2, characterized in that: When the button (171) is not actuated, if both the first terminal (1531) and the second terminal (1532) are first signals, the logic circuit (154) controls the motor (141) to stop the movement of the cutting member (36).

4. The surgical stapling instrument according to claim 2, characterized in that: When the button (171) is not actuated, if the first terminal (1531) is a first signal and the second terminal (1532) is a second signal, the logic circuit (154) controls the motor (141) to drive the cutting member (36) to move proximally.

5. The surgical stapling instrument according to claim 2, characterized in that: When the button (171) is not actuated, if the first terminal (1531) is the second signal and the second terminal (1532) is the first signal or the second signal, the logic circuit (154) does not control the motor (141) to drive or stop the cutting member (36).

6. The surgical stapling instrument according to claim 2, characterized in that: The logic circuit (154) comprises a first logic gate (1541), a second logic gate (1542) electrically connected to the first logic gate (1541), and a third logic gate (1543) electrically connected to the second logic gate (1542); The first logic gate (1541) is electrically connected to the button (171), the second logic gate (1542) is also electrically connected to the first terminal (1531), and the third logic gate (1543) is also electrically connected to the second terminal (1532) and the drive circuit (155).

7. The surgical stapling instrument according to claim 6, characterized in that: When the button (171) is not actuated, if the first terminal (1531) and the second terminal (1532) are both first signals, the first logic gate (1541) sends a second signal, the second logic gate (1542) sends a first signal, and the third logic gate (1543) sends a first signal.

8. The surgical stapling instrument according to claim 6, characterized in that: When the button (171) is not actuated, if the first terminal (1531) is a first signal and the second terminal (1532) is a second signal, the first logic gate (1541) sends the second signal, the second logic gate (1542) sends the first signal, and the third logic gate (1543) sends the second signal.

9. The surgical stapling instrument according to claim 6, characterized in that: When the button (171) is not actuated, if the first terminal (1531) is a second signal and the second terminal (1532) is a first signal or a second signal, the first logic gate (1541) sends the second signal, the second logic gate (1542) sends the second signal, and the third logic gate (1543) sends the second signal.

10. The surgical stapling instrument according to claim 1, characterized in that: The handle (11) further comprises a drive member (143) and a plurality of switches (1521) that can be actuated in response to the drive member (143); Wherein, the driving member (143) is mechanically connected between the motor (141) and the cutting member (36), and the switch (1521) is electrically connected to the microcontroller (153); When the button (171) is actuated, the control circuit (15) is capable of stopping the driving of the motor (141) according to the actuation of the switch (1521).

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