Incision closure device

Abstract

The application relates to a cutting and suturing device. The device comprises a support, an end effector, a transmission member, a driving assembly and a back-off assembly; the driving assembly comprises a driving gear and a motor, the driving gear is connected to the motor, the driving gear has an engagement position and a disengagement position, when the driving gear is in the engagement position, the driving assembly is connected to the support, the driving gear is in transmission connection with the transmission member, when the driving gear is in the disengagement position, the driving assembly is separated from the support, and the driving gear is disconnected from the transmission member; the back-off assembly comprises a driving member and a back-off gear, the back-off gear is in transmission connection with the driving member, when the driving gear is switched from the engagement position to the disengagement position, the back-off assembly can be connected to the support, so that the back-off gear is in transmission connection with the transmission member. The back-off assembly in the application is arranged on the outer side, can be mounted and dismounted relative to the support, so that the back-off gear is in transmission connection with the transmission member, thereby reducing the volume of the cutting and suturing device, making the structure simpler and the assembly easier.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to cutting and suturing devices. Background Technology

[0002] In electric staplers, the motor, as the primary drive unit, is prone to malfunctions, including those occurring under special circumstances, which can lead to the jaws failing to open and release the tissue. When a malfunction occurs during use, the stapler jaws may be clamping tissue. In this case, a retraction mechanism is needed to drive the transmission connected to the stapler jaws to retract, causing the jaw head to retract the blade and the jaws to open and release the tissue. However, the probability of such malfunctions is relatively low. Including a retraction mechanism within the stapler increases its size, complicates its structure, and increases cost. Summary of the Invention

[0003] Therefore, it is necessary to provide a cutting and suturing device to address the technical problem that setting a retraction component inside the stapler increases the size of the stapler, makes the structure more complex, and increases the cost.

[0004] A cutting and stitching device, comprising:

[0005] support;

[0006] An end effector, including a movable cutting component for cutting tissue;

[0007] The transmission component is slidably connected to the bracket and operably connected to the cutting component;

[0008] A drive assembly includes a drive gear and a drive motor. The drive gear is connected to the power output end of the drive motor. The drive gear has an engaged position and a disengaged position. When the drive gear is in the engaged position, the drive assembly is connected to the bracket and the drive gear is connected to the transmission component. When the drive gear is in the disengaged position, the drive assembly is separated from the bracket and the drive gear is disconnected from the transmission component.

[0009] The retraction assembly includes a drive member and a retraction gear, the retraction gear being drivenly connected to the drive member. When the drive gear switches from the engaged position to the disengaged position, the retraction assembly can be connected to the bracket so that the retraction gear is drivenly connected to the transmission member to drive the transmission member to move in the retraction direction.

[0010] In one embodiment, the drive component includes a trigger, a ratchet, and a pawl; the trigger is rotatably connected to the bracket, the pawl is disposed on the trigger and is used to engage with the ratchet, and the ratchet is drivenly connected to the return gear;

[0011] When the trigger is configured to rotate relative to the bracket, it can drive the pawl to rotate the ratchet in one direction, thereby driving the retraction gear to move the transmission component.

[0012] In one embodiment, the drive element further includes a first bevel gear and a second bevel gear;

[0013] The first bevel gear is connected to the ratchet drive and meshes with the second bevel gear, and the second bevel gear is coaxially connected to the return gear;

[0014] By operating the trigger, the ratchet can be driven to rotate in one direction via the pawl, so that the first bevel gear drives the return gear to rotate via the second bevel gear, thereby driving the transmission component to move.

[0015] In one embodiment, the drive element further includes a first gear and a second gear;

[0016] The first gear is coaxially connected to the ratchet and is also connected to the second gear in a transmission manner; the first bevel gear is coaxially connected to the second gear.

[0017] By operating the trigger, the ratchet can be driven to rotate in one direction via the pawl, so that the first gear drives the first bevel gear to rotate via the second gear.

[0018] In one embodiment, the drive unit further includes a third gear and a fourth gear, the third gear meshing with the first gear, the fourth gear meshing with the third gear, and being driven by the second gear.

[0019] In one embodiment, the drive unit further includes a fifth gear, which is coaxially connected to the fourth gear and meshes with the second gear, wherein the radius of the fifth gear is smaller than the radius of the fourth gear.

[0020] In one embodiment, the retraction assembly further includes a first elastic element connected to the trigger, the first elastic element being used to apply a restoring force to the trigger.

[0021] In one embodiment, the drive component includes a rocker arm that is connected to the retraction gear. By rotating the rocker arm, the retraction gear can be driven to rotate, thereby moving the drive component.

[0022] In one embodiment, the rocker arm is provided with a retraction direction indicator mark; and / or, the rocker arm controls the rotation of the retraction gear in one direction via a ratchet and pawl assembly.

[0023] In one embodiment, the drive includes a retractable motor for connection with the retractable gear drive.

[0024] In one embodiment, the bracket is provided with an unlocking switch, which is slidably connected to the bracket and has an unlocked state and a locked state;

[0025] The drive assembly further includes a first housing, the drive gear and the drive motor are connected to the first housing, and when the unlock switch is in the locked state, it abuts against the first housing to fix the first housing to the bracket; when the unlock switch is in the unlocked state, the unlock switch can separate from the first housing to release the first housing; and / or, the retraction assembly further includes a second housing, the drive member and the retraction gear are connected to the second housing, and when the unlock switch is in the locked state, it abuts against the second housing to fix the second housing to the bracket; when the unlock switch is in the unlocked state, the unlock switch can separate from the second housing to release the second housing.

[0026] Beneficial effects:

[0027] The cutting and suturing device provided in this embodiment of the invention includes a support, an end effector, a transmission component, a drive assembly, and a retraction assembly. The end effector includes a movable cutting component for cutting tissue. The transmission component is slidably connected to the support and operably connected to the cutting component. The drive assembly includes a drive gear and a motor. The drive gear is connected to the power output end of the motor and has an engaged position and a disengaged position. When the drive gear is in the engaged position, the drive assembly is connected to the support, and the drive gear is driven by the transmission component. When the drive gear is in the disengaged position, the drive assembly is separated from the support, and the drive gear is disconnected from the transmission component. The retraction assembly includes a drive component and a retraction gear. The retraction gear is driven by the drive component. When the drive gear switches from the engaged position to the disengaged position, the retraction assembly can be connected to the support, so that the retraction gear is driven by the transmission component, thereby driving the transmission component to move in the retraction direction. In this application, when the drive assembly is connected to the bracket, the drive gear can be in the meshing position to drive the transmission component to move. When the drive assembly is separated from the bracket, the drive gear is in the disengaged position and can connect the external retraction assembly to the bracket, so that the retraction gear is connected to the transmission component to drive the transmission component to retract. That is, the retraction assembly in this application is placed on the outside and can be installed and disassembled relative to the bracket, thereby reducing the size of the cutting and sewing device, making the structure simpler, and making assembly easier. Attached Figure Description

[0028] Figure 1This is a first schematic diagram of a cutting and stitching device provided in an embodiment of the present invention.

[0029] Figure 2 This is a second schematic diagram of a cutting and stitching device provided in an embodiment of the present invention.

[0030] Figure 3 This is a schematic diagram illustrating the installation or removal of the drive component relative to the bracket in a cutting and stitching device according to an embodiment of the present invention.

[0031] Figure 4 This is a schematic diagram of the retraction component in a cutting and stitching device according to an embodiment of the present invention.

[0032] Figure 5 This is a schematic diagram of the internal structure of the retraction component in a cutting and stitching device according to an embodiment of the present invention.

[0033] Figure 6 This is a schematic diagram of the ratchet and pawl engagement in a cutting and sewing device provided in an embodiment of the present invention.

[0034] Figure 7 This is a left schematic diagram of the retraction component in a cutting and stitching device according to an embodiment of the present invention.

[0035] Figure 8 This is a schematic diagram of the cooperation between the retraction component and the transmission component in a cutting and sewing device provided in another embodiment of the present invention.

[0036] Figure 9 This is a schematic diagram of the cooperation between the retraction component and the transmission component in a cutting and sewing device provided in another embodiment of the present invention.

[0037] Icon labels:

[0038] 100 - Transmission component; 110 - Transmission gear; 200 - Drive assembly; 210 - Drive motor; 220 - Drive gear; 230 - First housing; 240 - Boss; 241 - Limiting groove; 250 - Guide rail; 260 - Male connector; 300 - Retracting assembly; 310 - Drive component; 311 - Trigger; 312 - Ratchet; 313 - Pawl; 314 - First gear; 315 - Second gear; 316 - First bevel gear; 317 - Second bevel gear; 318 - Fifth gear; 319 - First elastic element; 321 - Third gear ; 322-Fourth gear; 330-Return gear; 340-Return motor; 341-Battery; 342-Return switch; 350-Second housing; 370-Rock arm; 371-First connecting rod; 372-Second connecting rod; 373-Third connecting rod; 410-Bracket; 411-Unlock switch; 412-Unlock plate; 413-Mounting slot; 414-Guide slot; 415-Second elastic element; 420-End actuator; 430-Cutting component; 440-Power switch; 450-Female connector; 460-Adapter gear. Detailed Implementation

[0039] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0040] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0042] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0043] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0044] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0045] See Figure 1 , Figure 2 , Figure 3 and Figure 4 , Figure 1 This is a first schematic diagram of a cutting and stitching device provided in an embodiment of the present invention; Figure 2 This is a second schematic diagram of a cutting and stitching device provided in an embodiment of the present invention; Figure 3 This is a schematic diagram illustrating the installation or disassembly of the drive component relative to the bracket in a cutting and stitching device according to an embodiment of the present invention. Figure 4This is a schematic diagram of a retraction component in a cutting and suturing apparatus according to an embodiment of the present invention. The cutting and suturing apparatus provided in an embodiment of the present invention includes a support 410, an end actuator 420, a transmission member 100, a drive assembly 200, and a retraction component 300. The end actuator 420 includes a movable cutting member 430 for cutting tissue. The transmission member 100 is slidably connected to the support 410 and operably connected to the cutting member 430. The drive assembly 200 includes a drive gear 220 and a motor. The drive gear 220 is connected to the power output end of the motor and has an engaged position and a disengaged position. When the drive gear 220 is in the engaged position, the drive assembly 200… The drive assembly 200 is connected to the bracket 410, and the drive gear 220 is connected to the transmission member 100. When the drive gear 220 is in the disengaged position, the drive assembly 200 is separated from the bracket 410, and the drive gear 220 is disconnected from the transmission member 100. The retraction assembly 300 includes the drive member 310 and the retraction gear 330. The retraction gear 330 is connected to the drive member 310. When the drive gear 220 switches from the engaged position to the disengaged position, the retraction assembly 300 can be connected to the bracket 410 so that the retraction gear 330 is connected to the transmission member 100 so as to drive the transmission member 100 to move in the retraction direction.

[0046] Specifically, in this application, when the drive assembly 200 is connected to the bracket 410, the drive gear 220 can be in the meshing position, driving the transmission component 100 to move. When the drive assembly 200 is separated from the bracket 410, the drive gear 220 is in the disengaged position, and can connect the external retraction assembly 300 to the bracket 410, and make the retraction gear 330 connected to the transmission component 100 to drive the transmission component 100 to retract. That is, the retraction assembly 300 in this application is placed on the outside, and can be installed and disassembled relative to the bracket 410, thereby reducing the size of the cutting and sewing device, making the structure simpler, and making assembly easier.

[0047] See Figure 1 , Figure 4 , Figure 5 and Figure 6 , Figure 5 This is a schematic diagram of the internal structure of the retraction component in a cutting and stitching device according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the ratchet and pawl engagement in a cutting and stitching device according to an embodiment of the present invention. In one embodiment, the driving member 310 includes a trigger 311, a ratchet 312, and a pawl 313; the trigger 311 is rotatably connected to the bracket 410, the pawl 313 is disposed on the trigger 311 and is used to engage with the ratchet 312, and the ratchet 312 is connected to the return gear 330 for transmission; when the trigger 311 is configured to rotate relative to the bracket 410, it can drive the pawl 313 to drive the ratchet 312 to rotate unidirectionally, thereby driving the return gear 330 to move the transmission member 100.

[0048] Specifically, the rotation axis of trigger 311 coincides with the rotation axis of ratchet 312, but they move asynchronously. Pad 313 is mounted on trigger 311 and abuts against ratchet 312. Pad 313 and trigger 311 can rotate synchronously. (See attached instruction manual) Figure 6 Taking an example, when the end of the trigger 311 away from the pawl 313 rotates clockwise, the pawl 313 locks with the ratchet 312, and the pawl 313 drives the ratchet 312 to rotate; when the end of the trigger 311 away from the pawl 313 rotates counterclockwise, the pawl 313 unlocks from the ratchet 312, the pawl 313 jumps relative to the ratchet 312, and the ratchet 312 does not rotate, that is, the trigger 311 resets, preparing for the next clockwise rotation.

[0049] In this application, the ratchet 313 and ratchet 312 are configured to control the unidirectional rotation of the ratchet 312, thereby driving the retraction gear 330 to rotate in one direction, which in turn drives the transmission component 100 to retract. Simultaneously, the reset of the trigger 311 does not affect the rotation of the ratchet 312, thus avoiding interference with the transmission component 100. This allows for an unlimited number of trigger 311 rotations, meaning the retraction distance of the transmission component 100 is unlimited, improving the adaptability of the cutting and sewing device. Furthermore, in this application, the trigger 311 can be rotated with one hand, thereby improving operational efficiency.

[0050] See Figure 5 and Figure 6 In one embodiment, the drive member 310 further includes a first bevel gear 316 and a second bevel gear 317; the first bevel gear 316 is drivenly connected to the ratchet 312 and meshes with the second bevel gear 317, and the second bevel gear 317 is coaxially connected to the retraction gear 330; by operating the trigger 311, the ratchet 312 can be driven to rotate unidirectionally through the pawl 313, so that the first bevel gear 316 drives the retraction gear 330 to rotate through the second bevel gear 317, thereby driving the transmission member 100 to move.

[0051] Specifically, by setting the first bevel gear 316 and the second bevel gear 317, the rotation axis of the return gear 330 can be non-parallel to the rotation axis of the trigger 311, thereby making the rotation position of the trigger 311 unrestricted, and thus making the setting position of the trigger 311 unrestricted, thereby allowing the trigger 311 position to be set reasonably, and improving the adaptability of the cutting and sewing device.

[0052] See Figure 5 and Figure 6In one embodiment, the drive member 310 further includes a first gear 314 and a second gear 315; the first gear 314 is coaxially connected to the ratchet 312 and is drively connected to the second gear 315, and the first bevel gear 316 is coaxially connected to the second gear 315; by operating the trigger 311, the ratchet 312 can be driven to rotate unidirectionally through the pawl 313, so that the first gear 314 drives the first bevel gear 316 to rotate through the second gear 315.

[0053] Specifically, the arrangement of the first gear 314 and the second gear 315 allows the first bevel gear 316 and the ratchet 312 to be radially offset from each other, thereby reducing the size of the drive assembly 200 in the axial direction of the ratchet 312. At the same time, it can prevent the trigger 311 from interfering with the second bevel gear 317, the return gear 330, etc. during rotation, thus improving the reliability of the cutting and sewing device.

[0054] In other embodiments, the first bevel gear 316 may be connected to the ratchet 312 via a timing belt for transmission, or the first bevel gear 316 may be coaxially and fixedly connected to the ratchet 312.

[0055] See Figure 5 and Figure 6 In one embodiment, the drive unit 310 further includes a third gear 321 and a fourth gear 322. The third gear 321 is meshed with the first gear 314, and the fourth gear 322 is meshed with the third gear 321 and is driven by the second gear 315.

[0056] Specifically, the arrangement of the third gear 321 and the fourth gear 322 further increases the radial dimension of the ratchet 312 and the first bevel gear 316, so that the rotation position and setting position of the trigger 311 do not interfere with other components, thereby allowing the trigger 311 position to be set reasonably and improving the adaptability of the cutting and sewing device.

[0057] In other embodiments, the first gear 314 and the second gear 315 can also be connected by a synchronous belt for transmission, or the first gear 314 and the second gear 315 can be transmitted by setting multiple sets of gears, that is, as long as there is a gap between the first gear 314 and the second gear 315 and transmission is possible.

[0058] See Figure 5 , Figure 6 and Figure 7 , Figure 7This is a left schematic diagram of the retraction component in a cutting and sewing device according to an embodiment of the present invention. In one embodiment, the driving member 310 further includes a fifth gear 318, which is coaxially connected to the fourth gear 322 and meshes with the second gear 315. The radius of the fifth gear 318 is smaller than the radius of the fourth gear 322.

[0059] Specifically, the second gear 315 meshes with the fifth gear 318, so their output forces are the same. The fifth gear 318 is coaxially connected with the fourth gear 322, so their torques are the same. Because the radius of the fifth gear 318 is smaller than that of the fourth gear 322, the driving force of the fifth gear 318 is greater than that of the fourth gear 322. That is, the amplified output force is transmitted to the second gear 315 through the fifth gear 318, thereby reducing the torque input of the fourth gear 322, and thus reducing the torque input of the trigger 311, achieving a force-saving effect.

[0060] Furthermore, the radius of the first bevel gear 316 is smaller than the radius of the second gear 315. The first bevel gear 316 is coaxially connected to the second gear 315 and meshes with the second bevel gear 317, meaning that the torques of the first bevel gear 316 and the second gear 315 are the same, and the output forces of the second bevel gear 317 and the first bevel gear 316 are the same. Since the radius of the first bevel gear 316 is smaller than the radius of the second gear 315, the driving force of the first bevel gear 316 is greater than that of the second gear 315. That is, the amplified output force is transmitted to the second bevel gear 317 through the first bevel gear 316, thereby reducing the torque input of the second gear 315, which further reduces the torque input of the trigger 311, achieving a force-saving effect.

[0061] Furthermore, the distance between the end of the trigger 311 furthest from the pawl 313 and the axis of rotation of the trigger 311 is much greater than the distance between the axis of rotation of the pawl 313 and the axis of rotation of the trigger 311. That is, the trigger 311 is equivalent to a force-saving lever, so that when a certain driving force is applied to the end of the trigger 311, the amplified output force is transmitted to the ratchet 312 through the pawl 313, thereby achieving the effect of saving effort.

[0062] See Figure 4 , Figure 5 and Figure 6 In one embodiment, the retraction assembly 300 further includes a first elastic element 319 connected to the trigger 311, the first elastic element 319 being used to apply a restoring force to the trigger 311.

[0063] Specifically, the retraction assembly 300 also includes a support frame, with the trigger 311 rotatably connected to the support frame. One end of the first elastic element 319 is connected to the support frame, and the other end is connected to the end of the trigger 311 near the pawl 313. The first elastic element 319 applies a restoring force to the trigger 311, causing the trigger 311 to automatically reset under the action of the first elastic element 319, thereby achieving the effects of saving effort and improving efficiency. Preferably, the elastic element is a spring.

[0064] Furthermore, the end of the trigger 311 away from the pawl 313 extends outward relative to the support frame, and the first elastic element 319 is used to apply a pushing force to the trigger 311. When the trigger 311 and the support frame are held by hand, the trigger 311 can rotate relative to the support frame to drive the ratchet 312. When the hand is released, the trigger 311 opens under the action of the first elastic element 319, that is, the retraction of the transmission component 100 can be conveniently controlled by one hand through repeated operation of gripping, opening, and gripping.

[0065] See Figure 1 and Figure 8 , Figure 8 This is a schematic diagram illustrating the cooperation between the retraction component and the transmission component in a cutting and sewing device according to another embodiment of the present invention. In one embodiment, the driving component 310 includes a rocker arm 370, which is connected to the retraction gear 330. By rotating the rocker arm 370, the retraction gear 330 can be driven to rotate, thereby moving the transmission component 100.

[0066] Specifically, the output end of the rocker arm 370 is connected to the retraction gear 330. By manually controlling the rotation of the rocker arm 370, the rotation of the retraction gear 330 can be driven, thereby realizing the retraction of the transmission component 100.

[0067] Furthermore, the rocker arm 370 includes a first connecting rod 371, a second connecting rod 372, and a third connecting rod 373. The first connecting rod 371 is connected to the return gear 330. One end of the second connecting rod 372 is connected to the first connecting rod 371, and the other end is connected to the second connecting rod 372. The extension directions of the first connecting rod 371 and the second connecting rod 372 are offset on the axis of the return gear 330. That is, the third connecting rod 373 and the first connecting rod 371 are a certain distance apart in the radial direction of the return gear 330, thereby increasing the output torque of the first connecting rod 371 and achieving the effect of saving effort.

[0068] See Figure 1 and Figure 8 In one embodiment, the rocker arm 370 is provided with a retraction direction indicator mark, which can quickly drive the retraction gear 330 to rotate through the indicator mark, thereby driving the transmission component 100 to retract and improving the retraction efficiency.

[0069] See Figure 1 and Figure 8 In another embodiment, the rocker arm 370 controls the rotation of the retraction gear 330 in one direction via a ratchet and pawl assembly, thereby avoiding driving the retraction gear 330 to rotate in the opposite direction and improving the reliability of the cutting and stitching device.

[0070] In another embodiment, the rocker arm 370 controls the rotation of the retraction gear 330 in one direction via a ratchet and pawl assembly, and the rocker arm 370 is provided with a retraction direction indicator mark, thereby improving the reliability of the cutting and sewing device and increasing the retraction efficiency.

[0071] See Figure 1 and Figure 9 , Figure 9 This is a schematic diagram illustrating the cooperation between the retraction component and the transmission component in a cutting and sewing apparatus according to another embodiment of the present invention. In one embodiment, the driving component 310 includes a retraction motor 340, which is used for transmission connection with the retraction gear 330.

[0072] Specifically, the drive unit 310 also includes a battery 341, which is electrically connected to the retraction motor 340. The retraction motor 340 has a retraction switch 342. By activating the retraction switch 342, the retraction motor 340 drives the retraction gear 330 to rotate, thereby driving the transmission unit 100 to retract.

[0073] See Figure 1 , Figure 2 and Figure 3 In one embodiment, the bracket 410 is provided with an unlocking switch 411, which is slidably connected to the bracket 410. The unlocking switch 411 has an unlocked state and a locked state. The drive assembly 200 also includes a first housing 230, a drive gear 220 and a drive motor 210 connected to the first housing 230. When the unlocking switch 411 is in the locked state, it is used to abut against the first housing 230 to fix the first housing 230 to the bracket 410. When the unlocking switch 411 is in the unlocked state, it can separate from the first housing 230 to release the first housing 230.

[0074] Specifically, the first housing 230 has a first inner cavity, the drive motor 210 is housed within the first inner cavity, and the drive gear 220 is located outside the first housing 230. When the unlocking switch 411 is in the locked state, it can stably limit the first housing 230 to the installation position, thereby making the first housing 230 stably connected to the bracket 410, and enabling the drive gear 220 to stably transmit power to the transmission component 100, thus ensuring that the drive gear 220 is stably in the meshing position. When it is necessary to install the retraction component 300, the unlocking switch 411 is switched to the unlocked state, which releases the first housing 230, allowing it to separate from the bracket 410, and placing the drive gear 220 in the disengaged position.

[0075] Further, the unlocking switch 411 includes an unlocking plate 412 and a second elastic member 415. The bracket 410 has a mounting groove 413, and the unlocking plate 412 slides within the mounting groove 413. One end of the second elastic member 415 is connected to the groove wall of the mounting groove 413, and the other end is connected to the unlocking plate 412. The second elastic member 415 applies a pushing force to the unlocking plate 412. The first housing 230 has a boss 240. When the unlocking switch 411 is in the locked state, the unlocking plate 412 abuts against the boss 240 on the side away from the transmission member 100, thus restricting the first housing 230 from moving away from the transmission member 100. When the unlocking plate 412 is manually moved, the second elastic member 415 is compressed, causing the unlocking plate 412 to move away from the first housing 230, releasing the boss 240. This allows the first housing 230 to move away from the transmission member 100 and separate from the bracket 410. Preferably, the second elastic member 415 is a spring.

[0076] Furthermore, the boss 240 is provided with a limiting groove 241 that cooperates with the unlocking plate 412, thereby restricting the first housing 230 from moving in a direction other than the sliding direction of the unlocking plate 412, making the connection between the first housing 230 and the bracket 410 more stable.

[0077] In addition, the bracket 410 is also provided with a guide groove 414, which is located on the side opposite to the unlocking plate 412. The first housing 230 is provided with a guide rail 250 on the side away from the boss 240. The guide rail 250 can be engaged with the guide groove 414 and slide relative to the groove wall of the guide groove 414, so as to guide the first housing 230 when it is installed relative to the bracket 410, while restricting the first housing 230 from moving along the sliding direction of the unlocking plate 412.

[0078] Furthermore, the drive assembly 200 also includes a male connector 260, and the bracket 410 is provided with a female connector 450 and a power switch 440. When the first housing 230 is connected to the bracket 410, the male connector 260 is inserted into the female connector 450, and the power switch 440 is turned on, thereby energizing the drive motor 210 and causing the drive motor 210 to drive the drive gear 220 to rotate. When the first housing 230 is separated from the bracket 410, the male connector 260 is separated from the female connector 450, the power switch 440 is turned off, and the drive motor 210 is de-energized.

[0079] See Figure 1 , Figure 2 , Figure 3 and Figure 4 In one embodiment, the retraction assembly 300 further includes a second housing 350, a drive member 310 and a retraction gear 330 connected to the second housing 350. When the unlocking switch 411 is in the locked state, it is used to abut against the second housing 350 to fix the second housing 350 to the bracket 410. When the unlocking switch 411 is in the unlocked state, the unlocking switch 411 can be separated from the second housing 350 to release the second housing 350.

[0080] Specifically, the second housing 350 is constructed as a support frame, and a second receiving cavity is constructed inside the second housing 350. The retraction gear 330 is disposed outside the second housing 350, the drive member 310 is housed in the second receiving cavity, and the end of the trigger 311 away from the pawl 313 extends out of the second housing 350, that is, it is open relative to the second housing 350. The structure of the second housing 350 is exactly the same as the structure of the first housing 230, so that when the drive assembly 200 is separated from the support 410, the retraction assembly 300 can be stably connected to the support 410.

[0081] See Figure 1 , Figure 2 and Figure 4 In one embodiment, the cutting and stitching device further includes a transition gear 460. The transmission member 100 is provided with a plurality of transmission teeth 110. The transition gear 460 is meshed with the plurality of transmission teeth 110. The transition gear 460 is used to mesh with either the drive gear 220 or the retraction gear 330.

[0082] Specifically, when the drive assembly 200 is connected to the bracket 410, the adapter gear 460 meshes with the drive gear 220. When the retraction assembly 300 is connected to the bracket 410, the adapter gear 460 meshes with the retraction gear 330. The adapter gear 460 is designed to facilitate replacement when wear occurs during meshing with the drive gear 220 or the retraction gear 330, thus improving the service life of the cutting and sewing device.

[0083] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0084] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A cutting and sewing device, characterized in that, The cutting and stitching device includes: Bracket (410); The end effector (420) includes a movable cutting member (430) for cutting tissue. The transmission component (100) is slidably connected to the bracket (410) and operably connected to the cutting component (430); The drive assembly (200) includes a drive gear (220) and a drive motor (210). The drive gear (220) is connected to the power output end of the drive motor (210). The drive gear (220) has an engaged position and a disengaged position. When the drive gear (220) is in the engaged position, the drive assembly (200) is connected to the bracket (410), and the drive gear (220) is connected to the transmission member (100). When the drive gear (220) is in the disengaged position, the drive assembly (200) is separated from the bracket (410), and the drive gear (220) is disconnected from the transmission member (100). The drive assembly (200) can be installed and removed relative to the bracket (410). The retraction assembly (300) includes a drive member (310) and a retraction gear (330), the retraction gear (330) being drivenly connected to the drive member (310). When the drive gear (220) switches from the engaged position to the disengaged position, the retraction assembly (300) can be connected to the bracket (410) so that the retraction gear (330) is drivenly connected to the transmission member (100) to drive the transmission member (100) to move in the retraction direction. The retraction assembly (300) can be installed and removed relative to the bracket (410).

2. The cutting and stitching device according to claim 1, characterized in that, The drive unit (310) includes a trigger (311), a ratchet (312), and a pawl (313); the trigger (311) is rotatably connected to the bracket (410), the pawl (313) is disposed on the trigger (311) and is used to cooperate with the ratchet (312), and the ratchet (312) is connected to the return gear (330) in a transmission connection; When the trigger (311) is configured to rotate relative to the bracket (410), it can drive the pawl (313) to drive the ratchet (312) to rotate in one direction, thereby driving the return gear (330) to move the transmission member (100).

3. The cutting and stitching device according to claim 2, characterized in that, The drive unit (310) also includes a first bevel gear (316) and a second bevel gear (317). The first bevel gear (316) is connected to the ratchet (312) and meshes with the second bevel gear (317), and the second bevel gear (317) is coaxially connected with the return gear (330); By operating the trigger (311), the ratchet (312) can be driven to rotate in one direction by the pawl (313), so that the first bevel gear (316) drives the back gear (330) to rotate through the second bevel gear (317), thereby driving the transmission member (100) to move.

4. The cutting and stitching device according to claim 3, characterized in that, The drive unit (310) also includes a first gear (314) and a second gear (315); The first gear (314) is coaxially connected to the ratchet (312) and is also connected to the second gear (315) in a transmission manner. The first bevel gear (316) is coaxially connected to the second gear (315). By operating the trigger (311), the ratchet (312) can be driven to rotate in one direction by the pawl (313), so that the first gear (314) drives the first bevel gear (316) to rotate through the second gear (315).

5. The cutting and stitching device according to claim 4, characterized in that, The drive unit (310) further includes a third gear (321) and a fourth gear (322). The third gear (321) meshes with the first gear (314), and the fourth gear (322) meshes with the third gear (321) and is connected to the second gear (315) in a transmission manner.

6. The cutting and stitching device according to claim 5, characterized in that, The drive unit (310) also includes a fifth gear (318), which is coaxially connected to the fourth gear (322) and meshes with the second gear (315). The radius of the fifth gear (318) is smaller than the radius of the fourth gear (322).

7. The cutting and stitching device according to claim 2, characterized in that, The retraction assembly (300) further includes a first elastic element (319) connected to the trigger (311), the first elastic element (319) being used to apply a restoring force to the trigger (311).

8. The cutting and stitching device according to claim 1, characterized in that, The drive unit (310) includes a rocker arm (370), which is connected to the retraction gear (330). When the rocker arm (370) is rotated, the retraction gear (330) can be driven to rotate, thereby moving the transmission unit (100).

9. The cutting and stitching device according to claim 8, characterized in that, The rocker arm (370) is provided with a retraction direction indicator mark; and / or, the rocker arm (370) controls the rotation of the retraction gear (330) in one direction via a ratchet and pawl assembly.

10. The cutting and stitching device according to claim 1, characterized in that, The drive unit (310) includes a retraction motor (340) for transmission connection with the retraction gear (330).

11. The cutting and stitching apparatus according to any one of claims 1-10, characterized in that, The bracket (410) is provided with an unlocking switch (411), which is slidably connected to the bracket (410). The unlocking switch (411) has an unlocked state and a locked state. The drive assembly (200) further includes a first housing (230), the drive gear (220) and the drive motor (210) are connected to the first housing (230), the unlocking switch (411) is in the locked state to abut against the first housing (230) to fix the first housing (230) to the bracket (410), and the unlocking switch (411) is in the unlocked state to be able to separate from the first housing (230) to release the first housing (230); and / Or, the retraction assembly (300) further includes a second housing (350), the drive (310) and the retraction gear (330) are connected to the second housing (350), the unlocking switch (411) is in the locked state to abut against the second housing (350) to fix the second housing (350) to the bracket (410), and the unlocking switch (411) is in the unlocked state to be able to separate from the second housing (350) to release the second housing (350).

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