Handheld Assembly of Electric Surgical Instrument and Electric Surgical Instrument

Abstract

The present invention relates to a handheld assembly of an electric surgical instrument and an electric surgical instrument. The handheld assembly of the electric surgical instrument includes: a power supply assembly, a driving assembly, a switching assembly, a first power output assembly, a second power output assembly, a control circuit, and a housing portion; the switching assembly includes a shaft, a first gear, a second motor, a transmission rod, and a switching engagement member; the switching engagement member can enable the switching assembly to be in a first output mode or a second output mode. The handheld assembly of the electric surgical instrument provided by the present invention realizes the swinging, closing, and firing of a staple cartridge assembly through a high-power first motor. The complexity of the structure of the electric surgical instrument is reduced, and the cost is saved. At the same time, the switching of the output mode is realized through a low-power second motor, and the initial driving state can be set to form a safety structure to prevent accidental firing.

Description

Technical Field

[0001] The present invention relates to medical surgical instruments, and particularly to a handheld assembly of an electric surgical instrument and an electric surgical instrument using the handheld assembly. Background Art

[0002] In surgical operations, staplers are usually used to achieve tissue resection and wound closure. Staplers include linear cutting staplers, circular staplers, endoscopic linear cutting staplers, etc. These staplers can be used to resect diseased tissues of the lung, intestine, and stomach, and at the same time close the wound surface. During the operation, the end effector of the stapler clamps and squeezes the tissue, and then uses a cutting knife to cut the tissue. For the generated wound surface, staples are used for rapid suturing. The use of staplers shortens the operation time, improves the success rate of the operation, and the postoperative recovery is fast.

[0003] Currently used staplers mainly have two types: manual operation and electric operation. During the operation, the front end of the stapler must be used to clamp the tissue to be cut and make preparations before firing. For a manually operated stapler, during the firing process of the stapler, the doctor must hold the stapler in the air and press the handle at the same time to complete the firing. During the entire firing process, the hand provides two forces: support and pressure, which easily causes the stapler to shake due to the shaking of the hand. At the same time, the force applied by manual firing is not stable and uniform enough. Especially for a linear cutting stapler, multiple presses of the handle are required to complete the entire firing process. After each press of the handle, the handle must be released before the next press of the handle. This process of releasing the handle causes the cutting knife to stop advancing, and the pusher plate also stops moving, and the thrust on the staples also rapidly drops to zero. As a result, there are defects in the formation of the staples, and the cutting surface of the cutting knife is not smooth, especially at the position where the handle is released, the above problems are more obvious.

[0004] For an electric stapler, a doctor only needs to firmly hold the stapler and make the cutting knife and staples move by pressing a button, which can achieve the smooth movement of the cutting knife and the smooth and continuous stitching 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 costs 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 separately control each action, and a corresponding power transmission system also needs to be configured in the stapler, resulting in high costs, 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 handheld component of an electric surgical instrument, which uses a high-power motor to smoothly fire the cartridge assembly. The present invention provides a handheld component of an electric surgical instrument, which uses a high-power motor to achieve the swinging, closing, and firing of the cartridge assembly; and uses a low-power motor to achieve the switching of the driving mode. The present invention provides an electric surgical instrument that can achieve smooth cutting and effective stitching of tissues. The handheld component of the electric surgical instrument provided by the present invention realizes the swinging, closing, and firing of the cartridge assembly through a first motor. It can improve the surgical efficiency and reduce the influence brought by manual operation. It can achieve stable cutting of the cutting component and effective stitching of the staples. It reduces postoperative bleeding and accelerates the patient's recovery. It reduces the complexity of the structure of the electric surgical instrument and saves costs. At the same time, the initial driving state is set through a second motor, forming an anti-misfiring insurance structure.

[0006] The present invention provides a hand-held assembly for an electric surgical instrument, characterized in that the hand-held assembly comprises: a power supply assembly; a drive assembly including a drive gear and a motor assembly; a switching assembly capable of engaging with the drive assembly to obtain power input; a switching assembly capable of engaging with the drive assembly to obtain power input; the switching assembly includes a shaft, a first gear assembly, a second gear assembly, a third gear assembly, a second motor, a transmission rod and a switching engagement member; the first gear assembly, the second gear assembly and the third gear assembly are arranged on the shaft; the first gear assembly meshes with the drive gear of the drive assembly; the switching engagement member can make the switching assembly be in a first output mode or a second output mode; a first power output assembly including a first power gear, a first rotary drive rod, a first transmission member and a first transmission rod assembly; the first power gear is fixedly connected to the first rotary drive rod, so that the first power gear and the first rotary drive rod can rotate synchronously; the first rotary drive rod and the first transmission member cooperate with each other, so that the first rotary drive rod can drive the first transmission member to move along the first rotary drive rod; the first transmission member is connected to the first transmission rod; a second power output assembly including 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, so 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, so 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; a control circuit connected to the drive assembly and controlling the drive assembly; and a housing portion encapsulating at least 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, realizing the selection of the power output path. At the same time, for the one-out-of-two switching, the switching assembly forms a structure similar to an insurance to prevent accidental triggering of other transmission structures.

[0007] In the first output mode, the first gear meshes with both the drive gear and the first power gear of the first power output assembly at the same time; in the second output mode, the first gear meshes with both the drive gear and the second power gear of the second power output assembly at the same time. After the first gear meshes with the first power gear or the second power gear, the power from the drive assembly is transmitted to the first power output assembly or the second power output assembly through the switching assembly. The switching of the power transmission path is realized.

[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 rotary grip, a rotary dial, and a connecting rod. The rotary grip and rotary dial are rotatably connected to the housing. The rotary grip and rotary 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 rotary grip and rotary 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, and at least a part of the second transmission rod assembly can rotate with the rotary grip and rotary 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 component. 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 is clamped with the first transmission component. 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 component 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 disposed on the closed grip assembly or on the housing portion; 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 an electric surgical instrument, characterized in that the 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 the foregoing.

[0016] The handheld assembly of the electric surgical instrument provided by the present invention realizes the swing, 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. The present invention further provides an electric surgical instrument that can realize the smooth cutting and effective suturing of tissues. The present invention provides an electric surgical instrument that can realize the swing, closing, and firing of the 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 an electric surgical instrument according to the first embodiment of the present invention;

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

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

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

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

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

[0024] Figure 1 It is a schematic diagram of an 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 realize the swinging, opening, closing, and firing of the staple cartridge. 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 the electric surgical instrument according to the first embodiment of the present invention; Figure 4 It is a partial schematic diagram of the switching component according to the first embodiment of the present invention. The handheld assembly 200 includes: a driving component 2010, a switching component 2020, a first power output component 2030, a second power output component 2040, a manual rotation part 2050, a power supply component 2060, a control circuit 2070, and a housing part 2080. The driving component 2010 includes a motor component 2011, a transmission rod 20111, and a driving gear 2012. The driving gear is arranged on the driving shaft 20111 and rotates with the driving shaft 20111. The motor component 2011 includes a motor, and may further include a reduction gearbox 20112 and / or an encoder arranged in cooperation with the motor.

[0026] The switching component 2020 can be engaged with the driving component 2010. The switching component 2020 includes a first gear 2021, a shaft 2022, a switching fork 2023, a second motor 2024, and a transmission rod 2025. The motor 2024 drives the switching fork to move forward or backward through the transmission rod 2025. The transmission rod 2025 can be a lead screw. The motor 2024 may also be connected with a reduction gearbox and / or an encoder. 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 staples.

[0028] Pressing the switching switch located on the housing drives the second motor 2024. The second motor 2024 drives the switching fork 2023 through the transmission rod 2025, enabling the first gear 2021 to switch between at least two positions. 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 simultaneously. 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 through the first gear 2021 in a switchable manner.

[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 can mesh 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 linearly. 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 rotate partially and maintain power output in the axial direction.

[0031] When the second motor 2024 drives the switching fork 2023 and pushes the first gear 2021 to the second position, the first gear 2021 meshes with 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 the 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 assembly 2010 and controls the driving assembly. The control circuit 2070 is also connected to the switching assembly 2020 and controls the switching assembly 2020.

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

[0036] The handheld assembly 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 assembly 2030 and the second power output assembly 2040. The first transmission rod assembly 2034 of the first power output assembly 2030 can be located in the internal space. At least a part of the second transmission rod assembly 2044 of the second power output assembly 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 assembly 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 assembly 2040 can extend into the internal space of the manual rotation part 2050.

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

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

[0039] The handheld assembly 200 further includes a swing head steering control button 2110. The swing head steering control button 2110 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 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 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 cartridge assembly 100 to drive the pusher and the cutter therein, realizing the firing of the cartridge assembly 100 and completing the cutting and suturing of tissues. The firing button assembly 2120 can be arranged on the closing grip assembly 2090 or on the housing portion 2080.

[0041] Figure 5 It is a schematic diagram of the partial structure of an 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, a switching fork 2224, a second motor 2225 and a transmission rod 2224. The second motor 2225 drives the switching fork 2224 through the transmission rod 2224 to make it move forward or backward. 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 meshes 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 switching 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, thereby delivering the power from the driving assembly 2010 to the first power output assembly 2030. When the switching 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, thereby delivering the power from the driving assembly 2010 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 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 meshing engagement with the first power gear portion 2031 of the first power output component 2030; thereby achieving the transmission of power from the drive 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 achieving the transmission of power from the drive 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 meshing engagement with the drive component 2010 to obtain power from the drive component 2010. The first gear 2221 and the second gear 2222 are arranged coaxially.

[0044] During the operation, the cartridge assembly of the stapler with the cartridge is brought close to the tissue to be clamped (such as the lung, intestine or stomach). During the clamping process, the cartridge can be rotated by swinging its head (at this time, the switching fork 2023 or 2224 will keep the switching assembly 2020 or 2220 in a state of meshing 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 rotated around the axis to select a suitable clamping position. The head-swinging movement is realized by driving the second power transmission device 2040, and the rotation around the axis is realized by rotating the manual rotation 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 return button 2100 keeps the closing grip assembly 2090 in this position. Use the second second motor 2024 or 2224 to drive the switching fork 2023 or 2224 to switch the gear or gear set of the switching assembly 2020, 2220 or 2320 to a position meshing 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, and 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 return 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 electric surgical instrument provided by the present invention realizes the swinging, closing and firing of the cartridge assembly through the first 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, the mode switching is realized through the second motor, and the initial driving state can be set, forming an insurance structure to prevent accidental firing. The electric surgical instrument provided by the present invention can stably fire the cartridge assembly by using a high-power motor to realize the swinging, closing and firing of the cartridge assembly; at the same time, a low-power motor is used to realize the switching of the driving mode. It realizes the stable cutting and effective suturing of the tissue, improves the surgical efficiency and reduces the influence brought by manual operation. At the same time, it reduces the complexity of the structure of the electric surgical instrument and saves costs. At the same time, the initial driving state is set through the second motor, forming an insurance structure to prevent accidental firing.

[0046] The above is a description of the preferred embodiments of the present invention, but it should not be construed as a limitation on the claims. The present invention is not limited to the above embodiments, and its specific structure allows for variations. All variations made within the scope of protection of the independent claims of the present invention are within the scope of protection of the present invention.

Claims

1. An electric surgical instrument handheld assembly, characterized in that, the handheld assembly includes: a power supply assembly; a drive assembly including a drive gear and a motor assembly; a switching assembly that can engage with the drive assembly to obtain power input; the switching assembly includes a shaft, a first gear, a second motor, a transmission rod, and a switching fork; the first gear is arranged on the shaft and meshes with the drive gear of the drive assembly; the switching fork is coupled with the first gear; the switching assembly meshes with the drive gear of the drive assembly; the second motor drives the switching fork to move forward or backward through the transmission rod, the switching fork enables the first gear to switch between at least two positions, and the switching fork can make the switching assembly be in a first output mode or a second output mode; a first power output assembly including a first power gear, a first rotary drive rod, a first transmission member, and a first transmission rod assembly; the first power gear is fixedly connected to the first rotary drive rod so that the first power gear and the first rotary drive rod can rotate synchronously; the first rotary drive rod cooperates with the first transmission member so that the first rotary drive rod can drive the first transmission member to move along the first rotary drive rod; the first transmission member is connected to the first transmission rod assembly; a second power output assembly including 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 so that the second power gear and the second rotary drive rod can rotate synchronously; the second rotary drive rod cooperates with the second transmission member so 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 the switching assembly; and a housing part that at least encapsulates the drive assembly, the switching assembly, and the control circuit, in the first output mode, the first gear simultaneously meshes with the drive gear and the first power gear of the first power output assembly; in the second output mode, the first gear simultaneously meshes with the drive gear and the second power gear of the second power output assembly.

2. An electric surgical instrument handheld assembly, characterized in that, the handheld assembly includes: a power supply assembly; a drive assembly including a drive gear and a motor assembly; A switching component, which can engage with the driving component to obtain power input; the switching component includes a shaft, a first gear, a second motor, a transmission rod and a switching fork; the first gear is arranged on the shaft and meshes with the driving gear of the driving component; the switching fork is coupled with the first gear; the switching component meshes with the driving gear of the driving component; the second motor drives the switching fork to move forward or backward through the transmission rod, and the switching fork makes the first gear switch between at least two positions, and the switching fork can make the switching component in a first output mode or a second output mode; A first power output component, including a first power gear, a first rotary drive rod, a first transmission member and a first transmission rod assembly; the first power gear is fixedly connected to the first rotary drive rod, so that the first power gear and the first rotary drive rod can rotate synchronously; the first rotary drive rod and the first transmission member cooperate with each other, so that the first rotary drive rod can drive the first transmission member to move along the first rotary drive rod; the first transmission member is connected to the first transmission rod assembly; A second power output component, including 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, so 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, so 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 driving component and the switching component; and A housing part, the housing part at least encapsulates the driving component, the switching component and the control circuit, The switching component further includes a second gear arranged 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.

3. A hand-held component of an electric surgical instrument, Characterized in that, The hand-held component includes: A power supply component; A driving component, including a driving gear and a motor assembly; A switching component, which can engage with the driving component to obtain power input; the switching component includes a shaft, a first gear, a second motor, a transmission rod and a switching fork; the first gear is arranged on the shaft and meshes with the driving gear of the driving component; the switching fork is coupled with the first gear; the switching component meshes with the driving gear of the driving component; the second motor drives the switching fork to move forward or backward through the transmission rod, and the switching fork makes the first gear switch between at least two positions, and the switching fork can make the switching component in a first output mode or a second output mode; The first power output assembly includes a first power gear, a first rotary drive rod, a first transmission member, and a first transmission rod assembly; the first power gear is fixedly connected to the first rotary drive rod so that the first power gear and the first rotary drive rod can rotate synchronously; the first rotary drive rod cooperates with the first transmission member so that the first rotary drive rod can drive the first transmission member to move along the first rotary 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 so that the second power gear and the second rotary drive rod can rotate synchronously; the second rotary drive rod cooperates with the second transmission member so 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 the switching assembly; and A housing portion, the housing portion at least encapsulates 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 is clamped with the first transmission member; 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, 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, 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 to provide a signal for controlling the movement of the first power output assembly.

9. An electric surgical instrument, wherein, the 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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