Single-motor electric surgical instrument hand-held assembly and electric surgical instrument

Abstract

The present invention relates to a single-motor electric surgical instrument handheld assembly and an electric surgical instrument. The single-motor electric surgical instrument handheld assembly comprises: a power supply assembly; a drive assembly; a switching assembly capable of engaging with the drive assembly to obtain power input, the switching assembly comprising a shaft, a first gear and an output switching part, the first gear being arranged on the shaft and engaging with the drive gear of the drive assembly, the output switching part being coupled with the first gear, the switching assembly engaging with the drive gear of the drive assembly, and turning the output switching part can put the switching assembly in a first output mode or a second output mode; a first power output assembly; a second power output assembly; a control circuit; and a housing. The present invention reduces the complexity of the structure of the electric surgical instrument and saves costs. At the same time, by setting the initial drive state, a safety structure is formed to prevent accidental firing.

Description

Technical Field

[0001] The invention relates to a medical surgical instrument, in particular to a single-motor electric surgical instrument handheld component and a single-motor electric surgical instrument using the handheld component. Background Art

[0002] Staplers are commonly used in surgical operations to achieve tissue removal and wound closure. Staplers include linear cutting staplers, tubular staplers, laparoscopic linear cutting staplers, etc. These staplers can be used to remove diseased tissues of the lungs, intestines, and stomach, and to seal the wound at the same time. During the operation, the stapler's end effector clamps and squeezes the tissue, and then the tissue is cut with a cutting knife. For the resulting wound, staples are used to quickly suture it. The use of staplers shortens the operation time, improves the success rate of the operation, and speeds up postoperative recovery.

[0003] The staplers currently used are mainly operated manually and electrically. During the operation, the front end of the stapler must be used to clamp the tissue to be cut and prepare for firing. For manually operated staplers, during the firing process, the doctor must hold the stapler in the air and press the handle to complete the firing. During the entire firing process, the hand provides two forces, support and pressing, and it is easy for the stapler to shake due to hand shaking. At the same time, the manual firing force is not stable and uniform enough, especially for linear cutting staplers. The handle needs to be pressed multiple times to complete the entire firing process. After each handle pressing action, the handle needs to be released before the next handle pressing. The process of releasing the handle stops the cutting knife from moving forward, and the pusher also stops moving, and the thrust on the stapler also drops rapidly to zero. This results in defects in the stapler forming, and the cutting wound surface of the cutting knife is not smooth, especially when the handle is relaxed, the above problems are more obvious.

[0004] For an electric stapler, the doctor only needs to hold the stapler stably and make the cutting knife and staples move through a button, which can achieve the smooth movement of the cutting knife and the smooth and continuous suturing of the staples, thus effectively ensuring the cutting effect. Comparative studies have shown that: compared with using a manual stapler, the bleeding complications of using an electric stapler are reduced by nearly half, while the hospitalization expenses paid by patients are reduced by nearly 10%, and the discharge time is advanced by one day (Impact of Powered and Tissue-Specific Endoscopic Stapling Technology on Clinical and Economic Outcomes of Video-Assisted Thoracic Surgery Lobectomy Procedures: A Retrospective, Observational Study, Daniel L. Miller et al., Advances in Therapy, (2018) 35: 707–723). The operating actions of the electric stapler include the closing and firing of the cartridge assembly, the swinging movement of the cartridge assembly, and the rotation of the cartridge assembly around its own axis. Since the movement forms of the cartridge assembly are diverse, the existing electric staplers usually adopt a power source with multiple motors to control each action respectively, and a corresponding power transmission system needs to be configured in the stapler, resulting in high cost, large weight, and complex structure of the electric stapler. Summary of the Invention

[0005] To solve one or more existing problems, the present invention provides a hand-held assembly of a single-motor electric surgical instrument, which can achieve tissue cutting and staple firing in a motor-driven manner. The present invention provides a hand-held assembly of a single-motor electric surgical instrument that fires the cartridge assembly smoothly. The present invention provides a hand-held assembly of a single-motor electric surgical instrument that realizes the swinging, closing, and firing of the cartridge assembly through a single motor. The present invention provides a single-motor electric surgical instrument that can achieve smooth cutting and effective suturing of tissues. The present invention provides a single-motor electric surgical instrument that can realize the swinging, closing, and firing of the cartridge assembly through a single motor.

[0006] The present invention provides a single-motor electric surgical instrument handheld assembly, characterized in that the handheld assembly comprises: a power supply assembly; a drive assembly, including a drive gear and a motor assembly; a switching assembly, the switching assembly can mesh with the drive assembly to obtain power input; the switching assembly comprises a shaft, a first gear and an output switching part; the first gear is arranged on the shaft and meshes with the drive gear of the drive assembly; the output switching part is coupled to the first gear; the switching assembly meshes with the drive gear of the drive assembly; turning the output switching part can put the switching assembly in a first output mode or a second output mode; a first power output assembly, including a first power gear, a first rotation drive rod, a first transmission member and a first transmission rod assembly; the first power gear is fixedly connected to the first rotation drive rod so that the first power gear and the first rotation drive rod can rotate synchronously; the The first rotating drive rod cooperates with the first transmission member so that the first rotating drive rod can drive the first transmission member to move along the first rotating drive rod; the first transmission member is connected to the first transmission rod; the second power output assembly includes a second power gear, a second rotating drive rod, a second transmission member and a second transmission rod assembly; the second power gear is fixedly connected to the second rotating drive rod so that the second power gear and the second rotating drive rod can rotate synchronously; the second rotating drive rod cooperates with the second transmission member so that the second rotating drive rod can drive the second transmission member to move along the second rotating drive rod; the second transmission member is fixedly connected to the second transmission rod; a control circuit, the control circuit connects the drive assembly and controls the drive assembly; and a shell part, the shell part at least encapsulates the drive assembly, the switching assembly and the control circuit. The power from the drive assembly is selectively transmitted to the first power output assembly or the second power output assembly through the switching assembly to realize the selection of the power output path. At the same time, for the switching of two or one, the switching assembly constitutes a structure similar to insurance to prevent the other transmission structures from being triggered by mistake.

[0007] In the first output mode, the first gear is meshed with the driving gear and the first power gear of the first power output assembly at the same time; in the second output mode, the first gear is meshed with the driving gear and the second power gear of the second power output assembly at the same time. After the first gear is meshed with the first power gear or the second power gear, the power from the driving assembly is transmitted to the first power output assembly or the second power output assembly through the switching assembly, so as to realize the switching of the power transmission path.

[0008] The switching component further includes a second gear disposed on the shaft. The second gear is connected to the first gear and can rotate simultaneously. In the first output mode, the second gear meshes with the first power gear of the first power output component. In the second output mode, the second gear meshes with the second power gear of the second power output component. Different switching component structures are provided to output power to the first power output component or the second power output component through the second gear.

[0009] The switching component further includes a second gear disposed on the shaft. The second gear is connected to the first gear and can rotate simultaneously. In the first output mode, one of the first gear and the second gear meshes with the first power gear of the first power output component. In the second output mode, the other of the first gear and the second gear meshes with the second power gear of the second power output component. Different switching component structures are provided to output power to the first power output component or the second power output component through the second gear.

[0010] The handheld component further includes a manual rotation part. The manual rotation part includes a rotating grip, a rotating dial, and a connecting rod. The rotating grip and the rotating dial are rotatably connected to the housing. The rotating grip and the rotating dial are fixedly connected to the connecting rod, and the connecting rod is used to connect the staple cartridge assembly. At least a part of the first transmission rod assembly of the first power output component is disposed in the internal space of the manual rotation part, and at least a part of the first transmission rod assembly can rotate with the rotating dial. At least a part of the second transmission rod assembly of the second power output component is disposed in the internal space of the manual rotation part. At least a part of the second transmission rod assembly can rotate with the rotating dial. Manual rotation is used to control the posture of the staple cartridge to ensure that the staple cartridge is aligned with the part to be cut.

[0011] The handheld component further includes a closing grip assembly. The closing grip assembly includes a closing grip and a clamping part. The clamping part is detachably clamped with the first transmission assembly. The closing grip assembly can rotate around a fixed axis, so as to move the first transmission part of the first power output component from a first position to a second position. When in the first position, the clamping part and the first transmission assembly are clamped with each other. When in the second position, the first transmission part can be separated from the clamping part.

[0012] The handheld component further includes a reset component. When the closing grip assembly moves the first transmission assembly to the second position, the grip reset component can fixedly hold the closing grip assembly in the corresponding position.

[0013] The handheld assembly further includes a swing head steering control button, which provides a first-direction rotation control signal, a second-direction rotation control signal, and / or a reset control signal to the control circuit, and the control circuit controls the movement of the second power output assembly according to the first-direction rotation control signal, the second-direction rotation control signal, or the reset control signal.

[0014] The handheld assembly further includes a firing button assembly, which is arranged on the closed grip assembly or on the housing part; the firing button assembly is connected to the control circuit and is used to provide a signal for controlling the movement of the first power output assembly.

[0015] The present invention further provides a single-motor electric surgical instrument, which is characterized in that the single-motor electric surgical instrument is an electric stapler for linear cutting, and the electric stapler includes: a staple cartridge assembly and the handheld assembly according to any one of the foregoing.

[0016] The handheld assembly of the single-motor electric surgical instrument provided by the present invention realizes the swing, closing, and firing of the staple cartridge assembly through a single motor. It can improve the surgical efficiency and reduce the influence brought by manual operation. It can realize the stable cutting of the cutting assembly and the effective suturing of the staples. It reduces postoperative bleeding and accelerates the patient's recovery. The present invention further provides a single-motor electric surgical instrument, which can realize the smooth cutting and effective suturing of tissues. The present invention provides a single-motor electric surgical instrument, which can realize the swing, closing, and firing of the staple cartridge assembly through a single motor. It reduces the complexity of the structure of the electric surgical instrument and saves costs. At the same time, through the setting of the initial driving state, an anti-misfiring insurance structure is formed.

[0017] Description of the drawings

[0018] Figure 1 is a schematic diagram of a single-motor electric surgical instrument according to the first embodiment of the present invention;

[0019] Figure 2 is a schematic diagram of the movement of the staple cartridge assembly;

[0020] Figure 3 is a schematic diagram of the partial structure of a single-motor electric surgical instrument according to the first embodiment of the present invention;

[0021] Figure 4 is a partial schematic diagram of a switching assembly according to the first embodiment of the present invention;

[0022] Figure 5 is a schematic diagram of the partial structure of a single-motor electric surgical instrument according to the second embodiment of the present invention;

[0023] Figure 6It is a partial schematic diagram of a switching component according to the second embodiment of the present invention. Detailed implementation mode

[0024] Figure 1 It is a schematic diagram of a single-motor electric surgical instrument according to the first embodiment of the present invention. The electric stapler 10 includes: a staple cartridge assembly 100 and a handheld assembly 200. The staple cartridge assembly 100 can be an existing staple cartridge assembly capable of swinging the head, which includes an anvil, a staple cartridge, a cutting knife assembly, and a transmission assembly. The transmission assembly receives an external force drive to achieve the swinging of the staple cartridge, opening, closing, and firing. Figure 2 It is a schematic diagram of the movement of the staple cartridge assembly. It shows the movement forms that the staple cartridge assembly 100 can achieve under the drive of the handheld assembly 200, including a swinging movement and a rotational movement around its own axis.

[0025] Figure 3 It is a schematic diagram of the partial structure of a single-motor electric surgical instrument according to the first embodiment of the present invention; Figure 4 It is a partial schematic diagram of a switching component according to the first embodiment of the present invention. The handheld assembly 200 includes: a drive assembly 2010, a switching assembly 2020, a first power output assembly 2030, a second power output assembly 2040, a manual rotation part 2050, a power supply assembly 2060, a control circuit 2070, and a housing part 2080. The drive assembly 2010 includes a motor assembly 2011 and a drive gear 2012, and the motor assembly 2011 has a drive shaft 20111. The drive gear is arranged on the drive shaft 20111 and rotates with the drive shaft 20111. The motor assembly 2011 includes a motor, and may also include a reduction box and / or an encoder arranged in a supporting manner with the motor.

[0026] The switching component 2020 can be engaged with the drive assembly 2010. The switching component 2020 includes a first gear 2021, a shaft 2022, and a switching fork 2023. The first gear assembly 2021 is arranged on the shaft 2022 and can rotate around the shaft 2022.

[0027] The first power output assembly 2030 includes a first power gear 2031, a first rotary drive rod 2032, a first transmission member 2033, and a first transmission rod assembly 2034. The first power gear 2031 can mesh with the first gear 2021 of the switching assembly 2020. The first rotary drive rod 2032 and the first transmission member 2033 cooperate with each other so that the first rotary drive rod 2032 can drive the first transmission member 2033 to move. The first transmission member 2033 moves linearly substantially along the rotary drive rod 2032 and can move in a forward or backward manner. The first transmission member 2033 is connected to the first transmission rod assembly 2034 to achieve power transmission. The first transmission rod assembly 2034 can cooperate with the staple cartridge assembly 100 to control the closing or opening of the anvil and the staple cartridge, and the firing of the staple.

[0028] When the switching fork 2023 pushes the first gear 2021 to the first position, the first gear 2021 meshes with both the drive gear 2012 and the first power gear 2031. Thus, the power from the drive assembly 2010 is transmitted to the first power output assembly 2030. The power is transmitted from the first transmission rod assembly 2034 of the first power output assembly 2030 to the staple cartridge assembly 100. The first rotary drive rod 2032 is rotatable. The first rotary drive rod 2032 can be a lead screw or a screw rod that is at least partially threaded. The first transmission member 2033 mates with the thread of the lead screw or the screw rod.

[0029] Based on the above structure, the switching assembly 2020 realizes the input of the power obtained from the drive assembly 2010 and outputs it to other components in a switchable manner through the first gear 2021.

[0030] The second power output assembly 2040 includes a second power gear 2041, a second rotary drive rod 2042, a second transmission member 2043, and a second transmission rod assembly 2044. The second power gear 2041 is capable of meshing with the first gear 2021 of the switching assembly 2020. The second rotary drive rod 2042 and the second transmission member 2043 cooperate with each other such that the second rotary drive rod 2042 can drive the second transmission member 2043 to move substantially in a straight line. The second transmission member 2043 is fixedly connected to the second transmission rod assembly 2044. The second transmission rod assembly 2044 includes a connecting claw 20441 and a sleeve 20442, and the connecting claw 20441 is connected to the sleeve 20442, for example, by the connecting claw 20441 gripping the sleeve 20442. The sleeve 20442 can rotate and remains connected to the connecting claw 20441. The second transmission rod assembly 2044 transmits power in the forward or backward direction by pushing and pulling the sleeve 20442, further driving the staple cartridge assembly 100 and controlling the swinging movement of the staple cartridge assembly 100. The second transmission rod assembly 2044 can partially rotate and maintain power output in the axial direction.

[0031] When the switching fork 2023 pushes the first gear 2021 to the second position, the first gear 2021 meshes with both the drive gear 2012 and the second power gear 2041 simultaneously. Thus, the power from the drive assembly 2010 is transmitted to the second power output assembly 2040. The power is transmitted from the second transmission rod assembly 2044 of the second power output assembly 2040 to the staple cartridge assembly. The second rotary drive rod 2042 is rotatable. The second rotary drive rod 2042 can be a lead screw or a screw rod that is at least partially threaded. The second transmission member 2043 mates with the thread of the lead screw or screw rod.

[0032] The drive shaft 20111 of the drive assembly 2010 is substantially parallel to the shaft 2022 of the switching assembly 2020. Further, the drive shaft 20111 of the drive assembly 2010 is substantially parallel to the first rotary drive rod 2032 of the first power output assembly 2030. Further, the drive shaft 20111 of the drive assembly 2010 is substantially parallel to the second rotary drive rod 2042 of the second power output assembly 2040.

[0033] The power supply assembly 2060 is used to provide electrical energy. The power supply assembly 2060 can include one or more batteries, and the batteries can be rechargeable batteries or disposable batteries.

[0034] A control circuit 2070, the control circuit 2070 includes an input port and an output port, obtains an input signal through the input port, and provides an output signal through the output port. The control circuit 2070 is connected to the driving component 2010 and controls the driving component.

[0035] The housing part 2080 can be used to accommodate the driving component 2010, the switching component 2020, the power supply component 2060 and the control circuit 2070. Moreover, the housing part 2080 can accommodate at least a part of the first power output component 2030 and the second power output component 2040.

[0036] The handheld component 200 further includes a manual rotation part 2050, and the manual rotation part 2050 is used to control the rotation of the staple cartridge assembly 100 around its axis. The manual rotation part 2050 includes a rotation dial 2051 and a connecting rod 2052; the rotation dial 2051 is rotatably connected to the housing part 2080, the rotation dial 2051 is fixedly connected to the connecting rod 2052, and the connecting rod 2052 is used to connect the staple cartridge assembly 100. The rotation dial 2051 of the manual rotation part 2050 and the connecting rod 2052 have an internal space for accommodating at least a part of the first power output component 2030 and the second power output component 2040. The first transmission rod assembly 2034 of the first power output component 2030 can be located in the internal space. At least a part of the second transmission rod assembly 2044 of the second power output component 2040 can be located in the internal space, and at least a part of the connecting claw 20441 and the sleeve 20442 of the second transmission rod assembly 2044 can be located in the internal space. When the manual rotation part 2050 is rotated, the staple cartridge assembly 100 is driven to rotate around its own axis through the connecting rod 2052. The first transmission rod assembly 2034 of the first power output component 2030 can extend into the internal space of the manual rotation part 2050, and the second transmission rod assembly 2044 of the second power output component 2040 can extend into the internal space of the manual rotation part 2050.

[0037] The handheld component 200 further includes a closing grip assembly 2090. The closing grip assembly 2090 includes a closing grip part 2091 and a clamping part 2092; the clamping part 2092 is detachably clamped with the first transmission part 2033; so that when the clamping part 2092 can move the first transmission part 2033 from the first position to the second position, and at the second position, the clamping part 2092 is separated from the first transmission part 2033. The first transmission part 2033 can transmit the power provided by the closing grip assembly 2090 and realize the closing of the anvil and the staple cartridge of the staple cartridge assembly 100.

[0038] The handheld assembly 200 further includes a grip reset button 2100, which can hold the closed grip assembly 2090 in a specific position, such as a position where the closed clamping portion 2092 and the first transmission assembly 2033 are separated from each other.

[0039] The handheld assembly 200 further includes a swing head steering control button 2110, which is connected to the control circuit 2070 and provides a first-direction rotation control signal, a second-direction rotation control signal or a reset control signal to the control circuit 2070. The control circuit 2070 controls the drive assembly 2010 according to the first-direction rotation control signal, the second-direction rotation control signal or the reset control signal to realize the swing head steering of the staple cartridge assembly in the first direction or the second direction, or reset. The swing head steering control button 2110 can be a controller with one or more signal output terminals for providing various control signals.

[0040] The handheld assembly 200 further includes a firing button assembly 2120; the firing button assembly 2120 is connected to the control circuit 2070 and is used to provide a signal for firing the staple cartridge assembly 100. When the firing button assembly 2120 is pressed, the firing button assembly 2120 provides a firing signal to the signal input port of the control circuit 2070. The output port of the control circuit 2070 outputs a signal to the drive assembly 2010 to drive the drive assembly to move and output power outward. The power is transmitted to the staple cartridge assembly 100 to drive the pusher and the cutter therein, so as to realize the firing of the staple cartridge assembly 100 and complete the cutting and suturing of tissues. The firing button assembly 2120 can be arranged on the closed grip assembly 2090 or on the housing portion 2080.

[0041] Figure 5 It is a schematic diagram of the partial structure of a single-motor electric surgical instrument according to the second embodiment of the present invention; Figure 62 is a partial schematic diagram of a switching assembly according to a second embodiment of the present invention. The switching assembly 2220 can be meshed with the driving assembly 2010, and the switching assembly 2220 includes a first gear 2221, a second gear 2222, a shaft 2223 and a switching fork 2224. The first gear 2221 and the second gear 2222 are arranged on the shaft 2223. The first gear 2221 and the second gear 2222 are connected to each other, for example, by being connected to each other through a sleeve sleeved on the shaft 2223, or by being connected to each other through a connecting rod, so that the first gear 2221 and the second gear 2222 can rotate simultaneously. The first gear 2221 is meshed with the driving gear 2012 of the driving assembly 2010 to receive the power input of the driving assembly 2010. The first gear 2221 and the second gear 2222 can be switched between at least two positions by toggling the switching fork 2224. When the shift fork 2224 pushes the first gear 2221 to the first position, the second gear 2222 is in meshing state with the first power gear portion 2031 of the first power output assembly 2030, so that the power from the drive assembly 2010 is transmitted to the first power output assembly 2030. When the shift fork 2224 pushes the first gear 2221 to the second position, the second gear 2222 is in meshing state with the second power gear portion 2041 of the second power output assembly 2040, while the second gear 2222 is separated from the first power output assembly 2030, so that the power from the drive assembly 2010 is transmitted to the second power output assembly 2040.

[0042] Based on the above structure, the switching component 2220 realizes outputting the power input obtained from the driving component 2010 to other components in a switchable manner through the second gear 2222. The first gear 2221 and the second gear 2222 are coaxially arranged.

[0043] Optionally, for the structure of the above switching component 2220 including the first gear 2221 and the second gear 2222, another switching method can also be provided: toggling the switching fork 2224 can cause the first gear 2221 and the second gear 2222 to switch between at least two positions. When the switching fork 2224 pushes the first gear 2221 to the first position, one of the second gear 2222 and the first gear 2221 is in an engaged state with the first power gear portion 2031 of the first power output component 2030; thereby realizing the transmission of the power from the driving component 2010 to the first power output component 2030. When the switching fork 2224 pushes the first gear 2221 to the second position, the other of the second gear 2222 and the first gear 2221 meshes with the second power gear portion 2041 of the second power output component 2040; thereby realizing the transmission of the power from the driving component 2010 to the second power output component 2040. However, whether in the first position or the second position, one of the first gear 2221 and the second gear 2222 must be in mutual engagement with the driving component 2010 to obtain power from the driving component 2010. The first gear 2221 and the second gear 2222 are arranged coaxially.

[0044] During the operation, the cartridge assembly of the single-motor stapler with a cartridge is brought close to the tissue to be clamped (such as the lung, intestine or stomach). During the clamping process, the appropriate clamping position can be selected through the swinging rotation of the cartridge (at this time, the switching fork 2023 or 2224 keeps the switching assembly 2020 or 2220 in a meshed state with the second power output assembly. At this time, the switching fork plays an insurance role. Since it is not meshed with the first power output assembly, it prevents the accidental firing of the cartridge assembly during the operation) and the rotation around the axis. Among them, the swinging movement is realized by driving the second power transmission device 2040, and the rotation around the axis is realized by rotating the manual rotating part 2050. After approaching the tissue, press the closing grip assembly 2090. The closing grip assembly 2090 makes the first connecting piece 2033 move from the initial first position along the first rotation driving rod 2032 to the second position. At this time, the closing grip assembly 2090 and the first connecting piece 2033 are in a separable state, and the grip reset button 2100 keeps the closing grip assembly 2090 in this position. Toggle the switching fork 2023 or 2224 to switch the gear or gear set of the switching assembly 2020, 2220 or 2320 to a position meshed with the first power output assembly 2030. Press the firing button assembly 2120 to provide a firing signal to the control circuit, so that the driving assembly 2010 outputs power, and this power is transmitted to the first power output assembly 2020 to drive the cutting knife of the cartridge assembly 100 to complete the cutting. At the same time, the staples sew the wound surface. Then the driving assembly 2010 provides a reverse driving force to retract the cutting knife. Release the grip reset button 2100 to close the grip and reset it. The first transmission piece 2033 retracts, the cartridge assembly 100 opens, and the clamped tissue is released. Withdraw the stapler.

[0045] The handheld assembly of the single-motor electric surgical instrument provided by the present invention realizes the swinging, closing and firing of the cartridge assembly through a single motor. It can improve the surgical efficiency and reduce the influence brought by manual operation. It can realize the stable cutting of the cutting assembly and the effective suturing of the staples. Reduce postoperative bleeding and accelerate the patient's recovery. It reduces the complexity of the structure of the electric surgical instrument and saves costs. At the same time, through the setting of the initial driving state, an anti-misfiring insurance structure is formed.

[0046] The above is an illustration of the preferred embodiments of the present invention, but it should not be construed as a limitation of the claims. The present invention is not limited to the above embodiments, and its specific structure is allowed to change. All changes made within the protection scope of the independent claims of the present invention are within the protection scope of the present invention.

Claims

1. A single-motor electric surgical instrument handheld assembly, It is characterized in that The handheld assembly comprises: Power supply components; a drive assembly, including a drive gear and a motor assembly; A switching assembly, wherein the switching assembly can mesh with the driving assembly to obtain power input; the switching assembly comprises a shaft, a first gear and an output switching part; the first gear is arranged on the shaft and meshes with the driving gear of the driving assembly; the output switching part is coupled with the first gear; the switching assembly meshes with the driving gear of the driving assembly; and the switching assembly can be placed in a first output mode or a second output mode by turning the output switching part; The first power output assembly comprises a first power gear, a first rotation drive rod, a first transmission member and a first transmission rod assembly; the first power gear is fixedly connected to the first rotation drive rod, so that the first power gear and the first rotation drive rod can rotate synchronously; the first rotation drive rod and the first transmission member cooperate with each other, so that the first rotation drive rod can drive the first transmission member to move along the first rotation drive rod; the first transmission member is connected to the first transmission rod assembly; The second power output assembly includes a second power gear, a second rotation drive rod, a second transmission member, and a second transmission rod assembly; the second power gear is fixedly connected to the second rotation drive rod, so that the second power gear and the second rotation drive rod can rotate synchronously; the second rotation drive rod and the second transmission member cooperate with each other, so that the second rotation drive rod can drive the second transmission member to move along the second rotation drive rod; the second transmission member is fixedly connected to the second transmission rod assembly; a control circuit, the control circuit being connected to the driving component and controlling the driving component; and a housing portion, wherein the housing portion at least encapsulates the drive component, the switching component and the control circuit, In the first output mode, the first gear is meshed with the driving gear and the first power gear of the first power output assembly at the same time; In the second output mode, the first gear is meshed with the driving gear and the second power gear of the second power output assembly at the same time.

2. A single-motor electric surgical instrument handheld assembly, It is characterized in that The handheld assembly comprises: Power supply components; a drive assembly, including a drive gear and a motor assembly; A switching assembly, wherein the switching assembly can mesh with the driving assembly to obtain power input; the switching assembly comprises a shaft, a first gear and an output switching part; the first gear is arranged on the shaft and meshes with the driving gear of the driving assembly; the output switching part is coupled with the first gear; the switching assembly meshes with the driving gear of the driving assembly; and the switching assembly can be placed in a first output mode or a second output mode by turning the output switching part; The first power output assembly comprises a first power gear, a first rotation drive rod, a first transmission member and a first transmission rod assembly; the first power gear is fixedly connected to the first rotation drive rod, so that the first power gear and the first rotation drive rod can rotate synchronously; the first rotation drive rod and the first transmission member cooperate with each other, so that the first rotation drive rod can drive the first transmission member to move along the first rotation drive rod; the first transmission member is connected to the first transmission rod assembly; The second power output assembly includes a second power gear, a second rotation drive rod, a second transmission member, and a second transmission rod assembly; the second power gear is fixedly connected to the second rotation drive rod, so that the second power gear and the second rotation drive rod can rotate synchronously; the second rotation drive rod and the second transmission member cooperate with each other, so that the second rotation drive rod can drive the second transmission member to move along the second rotation drive rod; the second transmission member is fixedly connected to the second transmission rod assembly; a control circuit, the control circuit being connected to the driving component and controlling the driving component; and a housing portion, wherein the housing portion at least encapsulates the drive component, the switching component and the control circuit, The switching assembly further comprises a second gear disposed on the shaft, the second gear being connected to the first gear and being capable of rotating simultaneously; In the first output mode, the second gear is meshed with the first power gear of the first power output assembly; In the second output mode, the second gear is meshed with the second power gear of the second power output assembly.

3. A single-motor electric surgical instrument handheld assembly, It is characterized in that The handheld assembly comprises: Power supply components; a drive assembly, including a drive gear and a motor assembly; A switching assembly, wherein the switching assembly can mesh with the driving assembly to obtain power input; the switching assembly comprises a shaft, a first gear and an output switching part; the first gear is arranged on the shaft and meshes with the driving gear of the driving assembly; the output switching part is coupled with the first gear; the switching assembly meshes with the driving gear of the driving assembly; and the switching assembly can be placed in a first output mode or a second output mode by turning the output switching part; The first power output assembly comprises a first power gear, a first rotation drive rod, a first transmission member and a first transmission rod assembly; the first power gear is fixedly connected to the first rotation drive rod, so that the first power gear and the first rotation drive rod can rotate synchronously; the first rotation drive rod and the first transmission member cooperate with each other, so that the first rotation drive rod can drive the first transmission member to move along the first rotation drive rod; the first transmission member is connected to the first transmission rod assembly; The second power output assembly includes a second power gear, a second rotary drive rod, a second transmission member, and a second transmission rod assembly; the second power gear is fixedly connected to the second rotary drive rod, such that the second power gear and the second rotary drive rod can rotate synchronously; the second rotary drive rod and the second transmission member cooperate with each other, such that the second rotary drive rod can drive the second transmission member to move along the second rotary drive rod; the second transmission member is fixedly connected to the second transmission rod assembly; A control circuit, the control circuit is connected to the drive assembly and controls the drive assembly; and A housing portion, the housing portion encapsulates at least the drive assembly, the switching assembly, and the control circuit, The switching assembly further includes a second gear disposed on the shaft, the second gear is connected to the first gear and can rotate simultaneously; In the first output mode, one of the first gear and the second gear meshes with the first power gear of the first power output assembly; In the second output mode, the other of the first gear and the second gear meshes with the second power gear of the second power output assembly.

4. The handheld assembly according to any one of claims 1-3, wherein, The handheld assembly further includes a manual rotation portion, the manual rotation portion includes a rotary grip rotary dial and a connecting rod; the rotary grip rotary dial is rotatably connected to the housing; the rotary grip rotary dial is fixedly connected to the connecting rod, and the connecting rod is used to connect the staple cartridge assembly; At least a part of the first transmission rod assembly of the first power output assembly is disposed in the internal space of the manual rotation portion, and at least a part of the first transmission rod assembly can rotate with the rotary grip rotary dial; At least a part of the second transmission rod assembly of the second power output assembly is disposed in the internal space of the manual rotation portion; at least a part of the second transmission rod assembly can rotate with the rotary grip rotary dial.

5. The handheld assembly according to any one of claims 1-3, wherein, The handheld assembly further includes a closed grip assembly; the closed grip assembly includes a closed grip and a clamping portion; the clamping portion is detachably clamped with the first transmission member; the closed grip assembly can rotate around a fixed axis, so as to move the first transmission member of the first power output assembly from a first position to a second position; when in the first position, the clamping portion and the first transmission member are clamped with each other; when in the second position, the first transmission member can be separated from the clamping portion.

6. The handheld assembly according to claim 5, wherein, The handheld assembly further includes a reset assembly; when the closed grip assembly moves the first transmission member to the second position, the reset assembly can fixedly hold the closed grip assembly in the corresponding position.

7. The handheld assembly according to any one of claims 1-3, wherein, The handheld assembly further includes a swing head steering control button, and the swing head steering control button provides a first-direction rotation control signal, a second-direction rotation control signal, and / or a reset control signal to the control circuit, and the control circuit controls the movement of the second power output assembly according to the first-direction rotation control signal, the second-direction rotation control signal, or the reset control signal.

8. The handheld assembly according to any one of claims 1-3, wherein, the handheld assembly further includes a firing button assembly, and the firing button assembly is disposed on the closed grip assembly or on the housing portion; the firing button assembly is connected to the control circuit and is used for providing a signal for controlling the movement of the first power output assembly.

9. A single-motor electric surgical instrument, wherein, the single-motor electric surgical instrument is an electric stapler for linear cutting, and the electric stapler includes: a cartridge assembly and the handheld assembly according to any one of claims 1-8.

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