CN110623697B - Single motor electric surgical instrument handheld assembly and electric surgical instrument - Google Patents
Single motor electric surgical instrument handheld assembly and electric surgical instrument Download PDFInfo
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- CN110623697B CN110623697B CN201810644684.7A CN201810644684A CN110623697B CN 110623697 B CN110623697 B CN 110623697B CN 201810644684 A CN201810644684 A CN 201810644684A CN 110623697 B CN110623697 B CN 110623697B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
- A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/11—Surgical instruments, devices or methods for performing anastomosis; Buttons for anastomosis
- A61B17/115—Staplers for performing anastomosis, e.g. in a single operation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
- A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
- A61B2017/07214—Stapler heads
- A61B2017/07271—Stapler heads characterised by its cartridge
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Abstract
The 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 driving assembly, a switching assembly, a first power output assembly, a second power output assembly, a control circuit and a shell part, wherein the switching assembly can be meshed with the first power gear when being in a first output mode, and the third gear assembly of the switching assembly can be meshed with the second power gear when being in a second output mode. The hand-held assembly and the electric surgical instrument provided by the invention realize the swinging, closing and firing of the nail bin assembly through the single motor. The complexity of the structure of the electric surgical instrument is reduced, and the cost is saved. Meanwhile, through setting the initial driving state, a safety structure for preventing false firing is formed.
Description
Technical Field
The invention relates to a medical surgical instrument, in particular to a single-motor electric surgical instrument handheld assembly and a single-motor electric surgical instrument using the handheld assembly.
Background
Anastomat is commonly used in surgical operations to effect excision of tissue and closure of a wound. The anastomat comprises a linear cutting anastomat, a tubular anastomat, a endoscopic linear cutting anastomat and the like. These anastomat can be used for excising pathological change tissue of lung, intestines, stomach, seal the surface of a wound simultaneously. In the surgical procedure, the end effector of the stapler clamps and squeezes the tissue, then the cutter is used to cut the tissue, and the resulting wound is then rapidly stapled with staples. The use of the anastomat shortens the operation time, improves the success rate of the operation and ensures quick postoperative recovery.
The currently used anastomat mainly comprises manual operation and electric operation. In the operation process, the front end of the anastomat is used for clamping the tissue to be cut, so that the preparation before firing is finished. For a manually operated anastomat, in the process of firing the anastomat, a doctor needs to press a handle while holding the anastomat in a suspended manner to finish firing. In the whole firing process, the hand provides two forces of support and pressing, and anastomat shake caused by hand shake easily occurs. Meanwhile, manual firing force application is not stable and uniform enough, particularly for a linear cutting anastomat, the whole firing process can be completed by pressing the handle for many times during firing, after each time of pressing the handle, the handle is released to press the handle next time, the process of releasing the handle enables the cutting knife to stop advancing, the nail pushing sheet also stops moving, and the pushing force for the anastomat also rapidly drops to zero. The forming of the anastomat is defective, the cutting wound surface of the cutting knife is unsmooth, and the problems are more obvious particularly when the handle is loosened.
For the electric anastomat, a doctor only needs to hold the anastomat stably, and the cutting knife and the anastomat move through the buttons, so that the stable movement of the cutting knife and the stable continuous stitching of the anastomat can be realized, and the cutting effect is effectively ensured. There is a comparative study showing that bleeding complications using an electric stapler are reduced by nearly half, while hospitalization costs paid by patients are reduced by nearly 10% and 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, etc., ADVANCES IN THERAPY, (2018) 35:707-723) relative to using a manual stapler. The operation actions of the electric anastomat comprise closing and firing of the nail bin assembly, swinging movement of the nail bin assembly and rotation of the nail bin assembly around a self shaft, and the movement modes of the nail bin assembly are multiple, so that the existing electric anastomat usually adopts a power source with a plurality of motors to respectively control each action, and a corresponding power transmission system is also required to be arranged in the anastomat in a matched mode, so that the electric anastomat has high cost, heavy weight and complex structure.
Disclosure of Invention
To solve one or more of the problems presently existing, the present invention provides a single motor powered surgical instrument hand-held assembly that enables tissue cutting and staple firing by motor driven means. The invention provides a single-motor electric surgical instrument handheld assembly, which stably fires a nail bin assembly. The invention provides a single-motor electric surgical instrument handheld assembly, which realizes swinging, closing and firing of a nail bin assembly through a single motor. The invention provides a single-motor electric surgical instrument which can realize stable cutting and effective suturing of tissues. The invention provides a single-motor electric surgical instrument which can realize swinging, closing and firing of a nail bin assembly through a single motor.
The invention provides a single-motor electric surgical instrument handheld assembly which is characterized by comprising a power supply assembly, a driving assembly, a switching assembly, a second gear assembly, a third gear assembly and an output switching part, wherein the driving assembly comprises a driving gear and a motor, the motor is provided with a driving shaft, the driving gear is arranged on the driving shaft, the switching assembly can be meshed with the driving assembly to obtain power input, the switching assembly comprises a shaft, a first gear assembly, a second gear assembly, a third gear assembly and an output switching part, the first gear assembly, the second gear assembly and the third gear assembly are arranged on the shaft, the first gear assembly is meshed with the driving gear of the driving assembly, the switching part can be shifted to enable the switching assembly to be in a first output mode or a second output mode, the first power output assembly comprises a first power gear, a first rotary driving rod, a first transmission part and a first transmission rod assembly, the first power gear is fixedly connected with the first rotary driving rod, the first power gear and the first rotary driving rod can synchronously rotate, the first rotary driving rod and the second rotary driving rod can synchronously rotate, the first gear assembly is matched with the second rotary driving rod, the second rotary driving rod can mutually rotate along with the first rotary driving rod, the second rotary driving rod can mutually drive rod and the second rotary driving rod can synchronously rotate, and the first rotary driving rod can mutually rotate, the second rotary driving rod can drive the second transmission piece to move along the second rotary driving rod, the second transmission piece is fixedly connected with the second transmission rod, the control circuit is connected with the driving assembly and controls the driving assembly, the shell part at least encapsulates the driving assembly, the switching assembly and the control circuit, the second gear assembly of the switching assembly can be meshed with the first power gear when the switching assembly is in a first output mode, and the third gear assembly of the switching assembly can be meshed with the second power gear when the switching assembly is in a second output mode. The power from the driving assembly is selectively transmitted to the first power output assembly or the second power output assembly through the switching assembly, so that the power output path is selected. Meanwhile, for the switching of the alternative, the switching component forms a structure similar to a safety, and other transmission structures are prevented from being triggered by mistake.
The first gear assembly of the switching assembly includes a first gear, a first meshing portion and a second meshing portion, the first gear meshes with a driving gear of the driving assembly, the second gear assembly includes a second gear and a third meshing portion, the third gear assembly includes a third gear and a fourth meshing portion, in the first output mode, the first meshing portion of the first gear assembly meshes with the third meshing portion of the second gear assembly so that the first gear assembly and the second gear assembly can synchronously rotate, the second gear of the second gear assembly meshes with a first power gear of the first power output assembly, in the second output mode, the second meshing portion of the first gear assembly meshes with the fourth meshing portion of the third gear assembly so that the first gear assembly and the third gear assembly can synchronously rotate, and the third gear of the third gear assembly meshes with a second power gear of the second power output assembly. After the first gear assembly is meshed with the second gear assembly or the third gear assembly, power from the driving assembly is transmitted to the first power output assembly or the second power output assembly through the second gear assembly or the third gear assembly. The switching of the power transmission path is realized.
The first gear assembly of the switching assembly comprises a first gear which is meshed with a driving gear of the driving assembly, the second gear assembly comprises a second gear, the third gear assembly comprises a third gear, the first gear, the second gear and the third gear are connected with each other and can rotate simultaneously, in the first output mode, the second gear is meshed with a first power gear of the first power output assembly, and in the second output mode, the third gear is meshed with a second power gear of the second power output assembly. Different structures are provided for directly outputting power to the first power output assembly or the second power output assembly through the second gear and the third gear.
The first gear assembly is located between the second gear assembly and the third gear assembly, or the first gear assembly is located on one side of the second gear assembly and the third gear assembly. The second gear assembly and the third gear assembly can be positioned on the different side or the same side of the first gear assembly, so that the selective transmission of power is realized.
The hand-held assembly further comprises a manual rotating part, the manual rotating part comprises a rotary grab handle rotary shifting wheel and a connecting rod, the rotary grab handle rotary shifting wheel is rotatably connected with the shell, the rotary grab handle rotary shifting wheel is fixedly connected with the connecting rod, the connecting rod is used for connecting the nail bin assembly, at least one part of the first transmission rod assembly of the first power output assembly is arranged in the inner space of the manual rotating part and can rotate along with the manual rotary shifting wheel, at least one part of the second transmission rod assembly of the second power output assembly is arranged in the inner space of the manual rotating part and can rotate along with the manual rotary shifting wheel. The manual rotation is used for controlling the posture of the nail bin, and the nail bin is ensured to be aligned to the part to be cut.
The hand-held assembly further comprises a closing handle assembly, the closing handle assembly comprises a closing handle and a clamping part, the clamping part is clamped with the first transmission assembly in a separable mode, the closing handle assembly can rotate around a fixed shaft, so that the first transmission piece of the first power output assembly can be moved from a first position to a second position, the clamping part is clamped with the first transmission assembly in the first position, and the first transmission piece can be separated from the clamping part in the second position.
The hand-held assembly further comprises a reset assembly, and when the closed handle assembly moves the first transmission assembly to the second position, the handle reset assembly can fixedly keep the closed handle assembly at the corresponding position.
The handheld assembly further comprises 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 for the control circuit, and the control circuit is used for controlling 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.
The hand-held assembly further comprises a firing button assembly, wherein the firing button assembly is arranged on the closed handle assembly or the shell, and the firing button assembly is connected with the control circuit and used for providing a signal for controlling the movement of the first power output assembly.
The invention also provides a single-motor electric surgical instrument which is characterized by being an electric anastomat for linear cutting, and comprising a nail bin assembly and a hand-held assembly according to any one of the above.
The single-motor electric surgical instrument handheld assembly provided by the invention realizes the swinging, closing and firing of the nail bin assembly through the single motor. Can improve the operation efficiency and reduce the influence caused by manual operation. Stable cutting of the cutting assembly and effective stapling of the staples can be achieved. Reduce postoperative bleeding and accelerate recovery of patients. The invention further provides a single motor electric surgical instrument which can realize stable cutting and effective suturing of tissues. The invention provides a single-motor electric surgical instrument which can realize swinging, closing and firing of a nail bin assembly through a single motor. The complexity of the structure of the electric surgical instrument is reduced, and the cost is saved. Meanwhile, through setting the initial driving state, a safety structure for preventing false firing is formed.
Drawings
FIG. 1 is a schematic illustration of a single motor powered surgical instrument according to a first embodiment of the present invention;
FIG. 2 is a schematic illustration of the movement of the cartridge assembly;
FIG. 3 is a schematic view of a partial structure of a single motor powered surgical instrument according to a first embodiment of the present invention;
FIG. 4 is a partial schematic view of a switching assembly according to a first embodiment of the present invention;
FIG. 5 is a schematic diagram of a switch assembly according to a first embodiment of the present invention;
FIG. 6 is a schematic view of a partial construction of a single motor powered surgical instrument according to a second embodiment of the present invention;
FIG. 7 is a partial schematic view of a switching assembly according to a second embodiment of the present invention;
FIG. 8 is a schematic view of a partial construction of a single motor powered surgical instrument according to a third embodiment of the present invention;
Fig. 9 is a partial schematic view of a switching assembly according to a third embodiment of the present invention.
Detailed Description
Fig. 1 is a schematic view of a single motor powered surgical instrument according to a first embodiment of the present invention. The powered stapler 10 includes a cartridge assembly 100 and a hand-held assembly 200. Cartridge assembly 100 may be an existing swingable cartridge assembly including an anvil, a cartridge, a cutter assembly, and a drive assembly. The transmission assembly is driven by external force to swing, open and close the nail bin and fire the nail bin. FIG. 2 is a schematic illustration of the movement of the cartridge assembly. The movement patterns that can be achieved by cartridge assembly 100 upon actuation of hand-held assembly 200 are shown, including a swinging motion, and a pivoting motion about its own axis.
Fig. 3 is a schematic view of a partial structure of a single motor electric surgical instrument according to a first embodiment of the present invention, fig. 4 is a partial schematic view of a switching assembly according to the first embodiment of the present invention, and fig. 5 is a disassembled schematic view of the switching assembly according to the first embodiment of the present invention. The hand-held assembly 200 includes a drive assembly 2010, a switch assembly 2020, a first power output assembly 2030, a second power output assembly 2040, a manual rotation section 2050, a power supply assembly 2060, a control circuit 2070 and a housing section 2080. A drive assembly 2010 includes a motor 2011 and a drive gear 2012, the motor 2011 having a drive shaft 20111. The drive gear is provided on the drive shaft 20111 and rotates with the drive shaft 20111. The drive assembly 2010 may also include a reduction and/or encoder associated with the motor.
The switching assembly 2020 is capable of meshing with the drive assembly 2010, the switching assembly 2020 including a first gear assembly 2021, a second gear assembly 2022, a third gear assembly 2023, a shaft 2024 and a switching fork 2025. The first gear assembly 2021, second gear assembly 2022, and third gear assembly 2023 are disposed on the shaft 2024 and rotatable about the shaft 2024. The first gear assembly 2021 includes a first gear portion 20211, a first engagement portion 20212, and a second engagement portion 20213. The first gear portion 20211 meshes with the drive gear 2012 of the drive assembly 2010 and receives a power input from the drive assembly 2010. The second gear assembly 2022 includes a second gear portion 20221 and a third engagement portion 20222, and the third gear assembly 2023 includes a third gear portion 20231 and a fourth engagement portion 20232.
The first engagement portion 20212 of the first gear assembly 2021 is capable of engaging with the third engagement portion 20222 of the second gear assembly 2022 so that the first gear assembly 2021 and the second gear assembly 2022 can rotate synchronously, and the second engagement portion 20213 of the first gear assembly 2021 is capable of engaging with the fourth engagement portion 20232 of the third gear assembly 2023 so that the first gear assembly 2021 and the third gear assembly 2023 can rotate synchronously. Pulling the switch fork 2025 may switch the first gear assembly 2021 between at least two positions, and when the switch fork 2025 pushes the first gear assembly 2021 to the first position, the first engaging portion 20212 of the first gear assembly 2021 and the third engaging portion 20222 of the second gear assembly 2022 are engaged with each other, so that the first gear assembly 2021 and the second gear assembly 2022 can rotate synchronously. When the switching fork 2025 pushes the first gear assembly 2021 to the second position, the second engagement portion 20213 of the first gear assembly 2021 and the fourth engagement portion 20232 of the third gear assembly 2023 are engaged with each other, so that the first gear assembly 2021 and the third gear assembly 2023 can rotate synchronously.
Based on the above configuration, the switching unit 2020 enables power input obtained from the driving unit 2010 to be output to other units through the second gear unit 2022 and the third gear unit 2023 in a switchable manner. The three gear assemblies 2021, 2022, and 2023 are coaxially aligned. Although one specific gear portion diameter relationship of the gear assembly is shown in fig. 1, this is not a limitation on the relationship of gear diameters, and the relationship of gear diameters may be appropriately adjusted according to the gear ratio.
A first power take-off assembly 2030 comprising a first power gear 2031, a first rotary drive shaft 2032, a first transmission 2033 and a first transmission shaft assembly 2034, said first power gear 2031 being capable of meshing with said second gear assembly 2022 of said switching assembly 2020. The first rotary driving rod 2032 is engaged with the first transmission member 2033 such that the first rotary driving rod 2032 can drive the first transmission member 2033 to move substantially linearly. The first transmission member 2033 is coupled to the first transmission rod assembly 2034 for power transmission. The first drive rod assembly 2034 may cooperate with the cartridge assembly 100 to effect control of the closure of the anvil and cartridge and the firing of the staples.
When the switching fork 2025 pushes the first gear assembly 2021 to the first position, the first engagement portion 20212 of the first gear assembly 2021 and the third engagement portion 20222 of the second gear assembly 2022 are engaged with each other, so that the first gear assembly 2021 and the second gear assembly 2022 can rotate synchronously. Since the second gear portion 20221 of the second gear assembly 2022 is in mesh with the first power gear 2031 of the first power output assembly 2030, power from the drive assembly 2010 is transmitted to the first power output assembly 2030. Power is transferred from the first drive rod assembly 2034 of the first power output assembly 2030 to the cartridge assembly. Wherein the first rotary drive lever 2032 is rotatable. The first rotary drive rod 2032 may be a screw or a threaded rod that is at least partially threaded. The first transmission 2033 mates with the threads of the lead screw or threaded rod.
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 third gear assembly 2023 of the switching assembly 2020. The second rotary driving rod 2042 cooperates with the second transmission member 2043 such that the second rotary driving rod 2042 is capable of driving 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 comprises a connecting claw 20441 and a sleeve 20442, the connecting claw 20441 is connected with the sleeve 20442, the sleeve 20442 can rotate and is connected with the connecting claw 20441, the second transmission rod assembly 2044 transmits power in the advancing direction or the retreating direction by pushing and pulling the sleeve 20442, the nail cartridge assembly 100 is further driven, and the head swinging movement of the nail cartridge assembly 100 is controlled. The second drive rod assembly 2044 is capable of partially rotating and maintaining power output in the axial direction.
When the shift fork 2025 pushes the first gear assembly 2021 to the second position, the first gear assembly 2021 and the third gear assembly 2023 are engaged with each other, and the third gear portion 20231 of the third gear assembly 2023 is engaged with the second power gear 2041 of the second power output assembly 2040, so that the power from the driving assembly 2010 is transmitted to the second power output assembly 2040. Power is transferred from the second drive rod assembly 2044 of the second power output assembly 2040 to the cartridge assembly. Wherein the second rotary drive rod 2042 is rotatable. The second rotary drive rod 2042 may be a threaded screw or rod, at least partially threaded. The second transmission member 2043 is engaged with the thread of the screw rod or screw.
The drive shaft 20111 of the drive assembly 2010 is substantially parallel to the shaft 2024 of the switch 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 take off assembly 2030. Further, the drive shaft 20111 of the drive assembly 2010 assembly is substantially parallel to the second rotary drive rod 2042 of the second power take off assembly 2040.
The power supply assembly 2060 is used to provide electrical power. The power supply assembly 2060 may comprise one or more batteries, which may be rechargeable or disposable.
A control circuit 2070, the control circuit 2070 including an input port through which an input signal is obtained and an output port through which an output signal is provided. A control circuit 2070 is connected to and controls the drive assembly 2010.
The housing portion 2080 can be used to house the drive assembly 2010, the switching assembly 2020, the power supply assembly 2060 and the control circuit 2070. And is capable of receiving at least a portion of the first power output assembly 2030 and the second power output assembly 2040.
The hand-held assembly 200 also includes a manual rotation portion 2050 that is configured to control rotation of the cartridge assembly 100 about its axial direction. The manual rotation portion 2050 includes a rotation thumb wheel 2051 and a connecting rod 2052, the rotation thumb wheel 2051 is rotatably connected to the housing portion 2080, the rotation thumb wheel 2051 is fixedly connected to the connecting rod 2052, and the connecting rod 2052 is used to connect the cartridge assembly 100. The rotary thumb wheel 2051 and the connecting rod 2052 of the manual rotary portion 2050 have an interior space for receiving at least a portion of the first power take-off assembly 2030 and the second power take-off assembly 2040. The first transfer rod assembly 2034 of the first power output assembly 2030 may be located in the interior space. The rotatable transmission assembly 2045 of the second power take-off assembly 2040 and the third transmission rod 2044 may be located in the interior space. When the manual rotation portion 2050 is rotated, the cartridge assembly 100 is rotated about its own axis by the connecting rod 2052. The first drive rod assembly 2034 of the first power output assembly 2030 may extend into the interior space of the manual rotation portion 2050 and the second drive rod assembly 2044 of the second power output assembly 2040 may extend into the interior space of the manual rotation portion 2050.
The hand-held assembly 200 also includes a closure grip assembly 2090. The closure handle assembly 2090 includes a closure handle portion 2091 and a snap portion 2092, the snap portion 2092 detachably snapped into engagement with the first transmission 2033 such that when the snap portion 2092 is capable of moving the first transmission 2033 from a first position to a second position, and in the second position, the snap portion 2092 and the first transmission 2033 are separated from each other. The first transmission 2033 is configured to transmit power provided by the closure grip assembly 2090 and to effect closure of the anvil and cartridge of the cartridge assembly 100.
The hand-held assembly 200 also includes a handle reset knob 2100 that is capable of holding the closure handle assembly 2090 in a particular position, such as in a position where the closure clip portion 2092 is separated from the first transmission assembly.
The hand-held assembly 200 further includes a yaw steering control knob 2110, the yaw steering control knob 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, and the control circuit 2070 controls the driving assembly 2010 according to the first direction rotation control signal, the second direction rotation control signal, or the reset control signal to implement yaw steering of the cartridge assembly in the first direction or the second direction, or reset. The yaw control knob 2110 may be a controller having one or more signal outputs for providing a variety of control signals.
The hand-held assembly 200 also includes a firing button assembly 2120, the firing button assembly 2120 being coupled to the control circuitry 2070 for providing a signal to fire the cartridge assembly 100. The firing button assembly 2120 is pressed, the firing button assembly 2120 provides a firing signal to a signal input port of the control circuit 2070, an output port of the control circuit 2070 outputs a signal to the driving assembly 2010 to drive the driving assembly to move, power is output outwards and is transmitted to the nail cartridge assembly to drive the nail pushing sheet and the cutting knife therein, the firing of the nail cartridge assembly 100 is achieved, and the cutting and the suturing of tissues are completed. The firing button assembly 2120 may be provided to the closure grip assembly or to the housing portion.
Fig. 6 is a partial schematic view of a single motor powered surgical instrument according to a second embodiment of the present invention, and fig. 7 is a partial schematic view of a switching assembly according to a second embodiment of the present invention. The switching assembly 2220 is capable of meshing with the driving assembly 2010, and the switching assembly 2220 includes a first gear assembly 2221, a second gear assembly 2222, a third gear assembly 2223, a shaft 2224, and a switching fork 2225, wherein the first gear assembly 2221 is located between the second gear assembly 2222 and the third gear assembly 2223. The first gear assembly 2221, the second gear assembly 2222, and the third gear assembly 2223 are interconnected and disposed on the shaft 2224. The first gear assembly 2221, the second gear assembly 2222, and the third gear assembly 2223 are capable of rotating simultaneously. The first gear assembly 2221 includes a first gear portion, the second gear assembly 2222 includes a second gear portion, and the third gear assembly 2223 includes a third gear portion. The first gear assembly 2221 is meshed with a drive gear 2012 of the drive assembly 2010 and receives a power input from the drive assembly 2010. Toggling the shift fork 2225 may cause the first gear assembly 2221 to shift in at least two positions. When the shift fork 2225 pushes the first gear assembly 2221 to the first position, the second gear assembly 2222 is in engagement with the first power gear portion 2031 of the first power output assembly 2030, the third gear assembly 2223 is disengaged from the second power output assembly 2040, and power from the drive assembly 2010 is transferred to the first power output assembly 2030. When the shift fork 2225 pushes the first gear assembly 2221 to the second position, the third gear assembly 2223 meshes with the second power gear portion 2041 of the second power output assembly 2040, and the second gear assembly 2222 is separated from the first power output assembly 2030, thereby enabling power from the drive assembly 2010 to be transmitted to the second power output assembly 2040.
Based on the above-described structure, the switching assembly 2220 enables the power input obtained from the driving assembly 2010 to be output to other assemblies through the second gear assembly 2222 and the third gear assembly 2223 in a switchable manner. The three gear assemblies of the first gear assembly 2221, the second gear assembly 2222, and the third gear assembly 2223 are coaxially arranged.
Fig. 8 is a partial schematic view of a single motor powered surgical instrument according to a third embodiment of the present invention, and fig. 9 is a partial schematic view of a switching assembly according to a third embodiment of the present invention. The switching assembly 2320 may be meshed with the driving assembly 2010, the switching assembly 2320 includes a first gear assembly 2321, a second gear assembly 2322, a third gear assembly 2323, a shaft 2324 and a switching fork 2325, the second gear assembly 2322 and the third gear assembly 2323 are located on the same side of the first gear assembly 2321, although fig. 8 only shows that the second gear assembly 2322 is located between the first gear assembly 2321 and the third gear assembly 2323, and in a practical case, the third gear assembly 2323 may also be located between the first gear assembly 2321 and the second gear assembly 2322. The first gear assembly 2321, the second gear assembly 2322 and the third gear assembly 2323 are connected to each other and disposed on the shaft 2324, the second gear assembly 2322 and the third gear assembly 2323 may be directly and fixedly connected, and the first gear assembly may be connected with the second gear assembly 2322 through a connecting cylinder 2326. The first, second and third gear assemblies 2321, 2322 and 2323 are capable of rotating simultaneously. The first gear assembly 2321 includes a first gear portion, the second gear assembly 2322 includes a second gear portion, and the third gear assembly 2323 includes a third gear portion. The first gear assembly 2321 is meshed with the drive gear 2012 of the drive assembly 2010, receiving a power input of the drive assembly 2010. Toggling the shift fork 2325 may cause the first gear assembly 2321 to shift in at least two positions. When the shift fork 2325 pushes the first gear assembly 2321 to the first position, the second gear assembly 2322 is in engagement with the first power gear portion 2031 of the first power output assembly 2030, the third gear assembly 2323 is separated from the second power output assembly 2040, and power from the driving assembly 2010 is transferred to the first power output assembly 2030. When the shift fork 2325 pushes the first gear assembly 2321 to the second position, the third gear assembly 2323 is meshed with the second power gear portion 2041 of the second power output assembly 2040, and the second gear assembly 2322 is separated from the first power output assembly 2030, thereby enabling power from the driving assembly 2010 to be transmitted to the second power output assembly 2040.
Based on the above structure, the switching assembly 2320 enables the power input obtained from the driving assembly 2010 to be output to other assemblies through the second gear assembly 2322 and the third gear assembly 2323 in a switchable manner. The three gear assemblies 2321, 2322 and 2323 are coaxially arranged.
During the operation, the nail bin assembly of the single-motor anastomat with the nail bin is close to the tissue (such as lung or stomach) to be clamped, the switching assembly 2020, 2220 or 2320 can be kept in a state meshed with the second power output assembly by the switching fork 2025, 2225 or 2325 during the clamping process through the swinging head rotation of the nail bin (the switching fork 2025, 2220 or 2320 at the moment, the switching fork plays a role in safety, and the nail bin assembly in the operation process is prevented from being wrongly triggered due to the fact that the switching fork is not meshed with the first power output assembly), and a proper clamping position is selected through the rotation around a shaft. Wherein the swing motion is achieved by driving the second power transmission device 2040, and the pivoting motion is achieved by rotating the manual rotation portion 2050. After approaching the tissue, the closure handle assembly 2090 is pressed, the closure handle assembly 2090 moves the first link 2033 along the first rotational drive rod 2032 from the initial first position to the second position, at which point the closure handle assembly 2090 remains in a detachable state with the first link 2033 and the handle reset knob 2100 holds the closure handle assembly 2090 in that position. The shift fork 2025, 2225, or 2325 is actuated to move the shift assembly 2020, 2220, or 2320 into engagement with the first power output assembly 2030. Pressing the firing button assembly 2120 provides a firing signal to the control circuitry that causes the drive assembly 2010 to output power and the power is transmitted to the first power output assembly 2020 that drives the cutting knife of the cartridge assembly 100 to complete the cut while the staples stitch the wound surface. The drive assembly 2010 then provides a reverse drive force to retract the cutting blade. Releasing the handle reset knob 2100 closes the handle reset, the first transmission 2033 is retracted, the cartridge assembly 100 is opened, and the clamped tissue is released. The stapler is withdrawn.
The single-motor electric surgical instrument handheld assembly provided by the invention realizes the swinging, closing and firing of the nail bin assembly through the single motor. Can improve the operation efficiency and reduce the influence caused by manual operation. Stable cutting of the cutting assembly and effective stapling of the staples can be achieved. Reduce postoperative bleeding and accelerate recovery of patients. The complexity of the structure of the electric surgical instrument is reduced, and the cost is saved. Meanwhile, through setting the initial driving state, a safety structure for preventing false firing is formed.
The foregoing description of the preferred embodiments of the present invention is provided for illustration, but is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to be changed, and all changes made within the scope of the invention as independently claimed are within the scope of the invention.
Claims (9)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810644684.7A CN110623697B (en) | 2018-06-21 | 2018-06-21 | Single motor electric surgical instrument handheld assembly and electric surgical instrument |
| PCT/CN2019/091839 WO2019242630A1 (en) | 2018-06-21 | 2019-06-19 | Single motor electric-powered surgical instrument handheld assembly and electric-powered surgical instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810644684.7A CN110623697B (en) | 2018-06-21 | 2018-06-21 | Single motor electric surgical instrument handheld assembly and electric surgical instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110623697A CN110623697A (en) | 2019-12-31 |
| CN110623697B true CN110623697B (en) | 2025-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810644684.7A Active CN110623697B (en) | 2018-06-21 | 2018-06-21 | Single motor electric surgical instrument handheld assembly and electric surgical instrument |
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| Country | Link |
|---|---|
| CN (1) | CN110623697B (en) |
| WO (1) | WO2019242630A1 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105307576A (en) * | 2013-04-16 | 2016-02-03 | 伊西康内外科公司 | Transmission arrangement for a surgical instrument |
| CN209236257U (en) * | 2018-06-21 | 2019-08-13 | 北京博辉瑞进生物科技有限公司 | Single Motor Electric Surgical Instrument Handheld Components and Electric Surgical Instruments |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104997541A (en) * | 2015-08-14 | 2015-10-28 | 上海逸思医疗科技有限公司 | One-hand operable surgical instrument and operation method thereof |
| US10253847B2 (en) * | 2015-12-22 | 2019-04-09 | Covidien Lp | Electromechanical surgical devices with single motor drives and adapter assemblies therfor |
| US10617413B2 (en) * | 2016-04-01 | 2020-04-14 | Ethicon Llc | Closure system arrangements for surgical cutting and stapling devices with separate and distinct firing shafts |
| CN106388893B (en) * | 2016-09-30 | 2019-01-15 | 苏州英途康医疗科技有限公司 | Linear cutting anastomat |
-
2018
- 2018-06-21 CN CN201810644684.7A patent/CN110623697B/en active Active
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- 2019-06-19 WO PCT/CN2019/091839 patent/WO2019242630A1/en not_active Ceased
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105307576A (en) * | 2013-04-16 | 2016-02-03 | 伊西康内外科公司 | Transmission arrangement for a surgical instrument |
| CN209236257U (en) * | 2018-06-21 | 2019-08-13 | 北京博辉瑞进生物科技有限公司 | Single Motor Electric Surgical Instrument Handheld Components and Electric Surgical Instruments |
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| Publication number | Publication date |
|---|---|
| WO2019242630A1 (en) | 2019-12-26 |
| CN110623697A (en) | 2019-12-31 |
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