Cutting and suturing device

Abstract

The invention relates to a cutting and suturing device. The device comprises a support, an end actuator, a transmission part, a driving assembly and a retreating assembly. The driving assembly comprises a driving gear and a motor, the driving gear is connected to the motor, the driving gear has a meshing position and a disengagement position, when the driving gear is in the meshing position, the driving assembly is connected with the support, the driving gear is in transmission connection with the transmission part, and when the driving gear is in the disengagement position, the driving assembly is separated relative to the support; the driving gear is disconnected from the transmission part; the rollback assembly comprises a driving part and a rollback gear, the rollback gear is in transmission connection with the driving part, and when the driving gear is switched from the meshing position to the disengagement position, the rollback assembly can be connected with the support so that the rollback gear can be in transmission connection with the transmission part. The rollback assembly is arranged on the outer side and can be mounted and dismounted relative to the support, so that the rollback gear is in transmission connection with the transmission part, the size of the cutting and suturing device is reduced, the structure is simpler, and assembling is easier.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, in particular to a cutting and suturing device. Background Art

[0002] In an electric stapler, the motor, as the main driving device, is bound to malfunction, as well as malfunctions in some other special circumstances, which may cause the jaws to be unable to open and disengage from the clamped tissue. When a doctor encounters a malfunction during use, the stapler jaws may be clamping the tissue. At this time, the retraction component needs to drive the transmission member connected to the stapler jaws to retract, so that the forceps head drives the blade to retract, and the jaws open to release the tissue. However, the probability of the above-mentioned malfunction is relatively small, and the provision of a retraction component in the stapler increases the size of the stapler, complicates the structure, and increases the cost. Summary of the invention

[0003] Based on this, it is necessary to provide a cutting and suturing device to address the technical problem that a retraction component is provided in the stapler, which increases the size of the stapler, makes the structure complicated, and increases the cost.

[0004] A cutting and suturing device, comprising:

[0005] Bracket;

[0006] an end effector including a movable cutting member for cutting tissue;

[0007] A transmission member, slidably connected to the bracket and operably connected to the cutting member;

[0008] A driving assembly, comprising a driving gear and a driving motor, wherein the driving gear is connected to a power output end of the driving motor, and the driving gear has an engaged position and a disengaged position. When the driving gear is in the engaged position, the driving assembly is connected to the bracket, and the driving gear is in transmission connection with the transmission member. When the driving gear is in the disengaged position, the driving assembly is separated from the bracket, and the driving gear is disconnected from the transmission member.

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

[0010] In one embodiment, the driving member includes a trigger, a ratchet and a pawl; the trigger is rotatably connected to the bracket, the pawl is arranged on the trigger and is used to cooperate with the ratchet, and the ratchet is drivingly connected to the retraction gear;

[0011] The trigger is configured to drive the pawl to drive the ratchet wheel to rotate in one direction when rotating relative to the bracket, so as to drive the retracting gear to drive the transmission member to move.

[0012] In one of the embodiments, the driving member further comprises a first bevel gear and a second bevel gear;

[0013] The first bevel gear is drivingly connected to the ratchet wheel and meshingly connected to the second bevel gear, and the second bevel gear is coaxially connected to the retracting gear;

[0014] By operating the trigger, the ratchet wheel can be driven to rotate in one direction through the pawl, so that the first bevel gear drives the retracting gear to rotate through the second bevel gear, so as to drive the transmission member to move.

[0015] In one embodiment, the driving member further comprises a first gear and a second gear;

[0016] The first gear is coaxially connected to the ratchet wheel and is transmission-connected to the second gear, and the first bevel gear is coaxially connected to the second gear;

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

[0018] In one embodiment, the driving member further includes a third gear and a fourth gear, the third gear is meshingly connected to the first gear, the fourth gear is meshingly connected to the third gear, and is transmission-connected to the second gear.

[0019] In one embodiment, the driving member further includes a fifth gear, the fifth gear is coaxially connected to the fourth gear and meshingly connected to the second gear, and 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 member, wherein the first elastic member is connected to the trigger, and the first elastic member is used to apply a restoring force to the trigger.

[0021] In one of the embodiments, the driving member includes a rocker arm, and the rocker arm is in transmission connection with the retraction gear. When the rocker arm is operated to rotate, the retraction gear can be driven to rotate, thereby driving the transmission member to move.

[0022] In one of the embodiments, a retreat direction indication mark is provided on the rocker arm; and / or the rocker arm unidirectionally controls the rotation of the retreat gear through a ratchet pawl assembly.

[0023] In one of the embodiments, the driving member includes a retraction motor, and the retraction motor is used for transmission connection with the retraction gear.

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

[0025] The drive assembly also includes a first shell, the drive gear and the drive motor are connected to the first shell, and when the unlocking switch is in the locked state, the unlocking switch is used to abut the first shell to fix the first shell to the bracket, and when the unlocking switch is in the unlocked state, the unlocking switch can be separated from the first shell to release the first shell; and / or, the retraction assembly also includes a second shell, the drive member and the retraction gear are connected to the second shell, and when the unlocking switch is in the locked state, the unlocking switch is used to abut the second shell to fix the second shell to the bracket, and when the unlocking switch is in the unlocked state, the unlocking switch can be separated from the second shell to release the second shell.

[0026] Beneficial effects:

[0027] The cutting and suturing device provided in an embodiment of the present invention comprises a bracket, an end actuator, a transmission member, a driving assembly and a retraction assembly; the end actuator comprises a movable cutting member for cutting tissue; the transmission member is slidably connected to the bracket and is operably connected to the cutting member; the driving assembly comprises a driving gear and a motor, the driving gear is connected to the power output end of the motor, the driving gear has an engaged position and a disengaged position, when the driving gear is in the engaged position, the driving assembly is connected to the bracket, and the driving gear is transmission-connected to the transmission member, when the driving gear is in the disengaged position, the driving assembly is separated from the bracket, and the driving gear is disconnected from the transmission member; the retraction assembly comprises a driving member and a retraction gear, the retraction gear is transmission-connected to the driving member, when the driving 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 transmission-connected to the transmission member to drive the transmission member to move in the retraction direction. When the driving assembly in the present application is connected to the bracket, the driving gear can be located in the meshing position to drive the transmission member to move. When the driving assembly is separated from the bracket, the driving gear is located in the disengaged position, and the external retraction assembly can be connected to the bracket, and the retraction gear is connected to the transmission member to drive the transmission member to retract. That is, the retraction assembly in the present application is placed on the outside and can be installed and disassembled relative to the bracket, thereby reducing the size of the cutting and suturing device, making the structure simpler, and making it easier to assemble. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0030] Figure 3 A schematic diagram of installing or disassembling a driving assembly relative to a support in a cutting and suturing device provided by an embodiment of the present invention.

[0031] Figure 4 A schematic diagram of a retraction assembly in a cutting and suturing device provided in an embodiment of the present invention.

[0032] Figure 5 This is a schematic diagram of the interior of a retraction assembly in a cutting and suturing device provided in one embodiment of the present invention.

[0033] Figure 6 A schematic diagram of the cooperation between a ratchet and a pawl in a cutting and suturing device provided in one embodiment of the present invention.

[0034] Figure 7 The left schematic diagram is a schematic diagram of a retraction assembly in a cutting and suturing device provided in one embodiment of the present invention.

[0035] Figure 8 A schematic diagram of the cooperation between the retracting assembly and the transmission member in a cutting and suturing device provided in yet another embodiment of the present invention.

[0036] Fig. 9 A schematic diagram of the cooperation between the retracting assembly and the transmission member in the cutting and suturing device provided in another embodiment of the present invention.

[0037] Figure Number:

[0038] 100-transmission member; 110-transmission tooth; 200-driving assembly; 210-driving motor; 220-driving gear; 230-first housing; 240-boss; 241-limiting groove; 250-guide rail; 260-male joint; 300-retraction assembly; 310-driving member; 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 member; 321-third gear ;322-fourth gear;330-retraction gear;340-retraction motor;341-battery;342-retraction switch;350-second shell;370-rocker arm;371-first connecting rod;372-second connecting rod;373-third connecting rod;410-bracket;411-unlocking switch;412-unlocking plate;413-mounting slot;414-guide slot;415-second elastic member;420-end actuator;430-cutting member;440-power switch;450-female connector;460-transfer gear. DETAILED DESCRIPTION

[0039] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0044] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0045] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 , Figure 1 A first schematic diagram of a cutting and suturing device provided by an embodiment of the present invention; Figure 2 A second schematic diagram of a cutting and suturing device provided by an embodiment of the present invention; Figure 3 A schematic diagram of the installation or removal of a drive assembly relative to a support in a cutting and suturing device provided by an embodiment of the present invention; Figure 4A schematic diagram of a retracting assembly in a cutting and suturing device provided in an embodiment of the present invention. A cutting and suturing device provided in an embodiment of the present invention comprises a support 410, an end effector 420, a transmission member 100, a drive assembly 200 and a retracting assembly 300; the end effector 420 comprises a movable cutting member 430 for cutting tissue; the transmission member 100 is slidably connected to the support 410 and is operably connected to the cutting member 430; the drive assembly 200 comprises a driving gear 220 and a motor, the driving gear 220 is connected to the power output end of the motor, the driving gear 220 has an engaged position and a disengaged position, and when the driving gear 220 is in the engaged position, the driving assembly 200 0 is connected to the bracket 410, and the driving gear 220 is in transmission connection with the transmission member 100. When the driving gear 220 is in the disengaged position, the driving assembly 200 is separated from the bracket 410, and the driving gear 220 is disconnected from the transmission member 100; the retraction assembly 300 includes a driving member 310 and a retraction gear 330, and the retraction gear 330 is in transmission connection with the driving member 310. When the driving gear 220 is switched from the meshing position to the disengaged position, the retraction assembly 300 can be connected to the bracket 410, so that the retraction gear 330 is in transmission connection with the transmission member 100, so as to drive the transmission member 100 to move along the retraction direction.

[0046] Specifically, when the driving component 200 is connected to the bracket 410 in the present application, the driving gear 220 can be located in the meshing position, driving the transmission member 100 to move. When the driving component 200 is separated from the bracket 410, the driving gear 220 is located in the disengaged position, and can connect the external retraction component 300 to the bracket 410, and make the retraction gear 330 transmission connected to the transmission member 100 to drive the transmission member 100 to retract, that is, the retraction component 300 in the present 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 suturing device, making the structure simpler, and making it easier to assemble.

[0047] See also Figure 1 , Figure 4 , Figure 5 and Figure 6 , Figure 5 An internal schematic diagram of a retraction assembly in a cutting and suturing device provided in one embodiment of the present invention; Figure 6 Schematic diagram of the ratchet and pawl cooperation in the cutting and suturing device provided by one 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 arranged on the trigger 311 and is used to cooperate with the ratchet 312, and the ratchet 312 is transmission-connected to the retraction gear 330; the trigger 311 is configured to drive the pawl 313 to drive the ratchet 312 to rotate unidirectionally when rotating relative to the bracket 410, so as to drive the retraction gear 330 to drive the transmission member 100 to move.

[0048] Specifically, the rotation axis of the trigger 311 coincides with the rotation axis of the ratchet 312, but they do not move synchronously. The pawl 313 is mounted on the trigger 311 and abuts against the ratchet 312. The pawl 313 and the trigger 311 can rotate synchronously. Figure 6 Taking an example to illustrate, when the end of the trigger 311 away from the pawl 313 rotates clockwise, the pawl 313 and the ratchet 312 are locked, 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 and the ratchet 312 are unlocked, the pawl 313 jumps relative to the ratchet 312, and the ratchet 312 does not rotate, that is, the trigger 311 is reset to prepare for the next clockwise rotation.

[0049] In the present application, the pawl 313 and the ratchet 312 are arranged to control the unidirectional rotation of the ratchet 312, thereby driving the retraction gear 330 to rotate unidirectionally to drive the transmission member 100 to retract. At the same time, the resetting of the trigger 311 does not affect the rotation of the ratchet 312, thereby not interfering with the transmission member 100, so that the number of rotations of the trigger 311 is not limited, that is, the retraction distance of the driving transmission member 100 is not limited, thereby improving the adaptability of the cutting and suturing device. Among them, in the present application, the rotation of the trigger 311 can be achieved by one hand, thereby improving the operating efficiency.

[0050] See also Figure 5 and Figure 6 In one embodiment, the driving member 310 also includes a first bevel gear 316 and a second bevel gear 317; the first bevel gear 316 is transmission-connected to the ratchet 312 and meshingly connected to 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 retracting gear 330 may be non-parallel to the rotation axis of the trigger 311, so that the rotation position of the trigger 311 is not restricted, that is, the setting position of the trigger 311 is not restricted, and the position of the trigger 311 can be reasonably set, thereby improving the adaptability of the cutting and suturing device.

[0052] See also Figure 5 and Figure 6In one embodiment, the driving member 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 transmission-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 staggered in the radial direction of the ratchet 312, thereby reducing the axial size of the drive assembly 200 in the ratchet 312. At the same time, it can avoid the trigger 311 from interfering with the second bevel gear 317, the return gear 330, etc. during rotation, thereby improving the reliability of the cutting and suturing device.

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

[0055] See also Figure 5 and Figure 6 In one embodiment, the driving member 310 further includes a third gear 321 and a fourth gear 322 , the third gear 321 is meshedly connected to the first gear 314 , the fourth gear 322 is meshedly connected to the third gear 321 , and is transmission-connected to the second gear 315 .

[0056] Specifically, the arrangement of the third gear 321 and the fourth gear 322 further increases the radial dimensions 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, and the position of the trigger 311 can be reasonably set, thereby improving the adaptability of the cutting and suturing 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 can be achieved.

[0058] See also Figure 5 , Figure 6 and Figure 7 , Figure 7The left schematic diagram of the retracting assembly in the cutting and suturing device provided by one embodiment of the present invention. In one embodiment, the driving member 310 further includes a fifth gear 318, the fifth gear 318 is coaxially connected to the fourth gear 322, and meshingly connected to the second gear 315, and the radius of the fifth gear 318 is smaller than the radius of the fourth gear 322.

[0059] Specifically, the second gear 315 is meshed with the fifth gear 318, and the output forces of the second gear 315 and the fifth gear 318 are the same. The fifth gear 318 is coaxially connected with the fourth gear 322, and the torques of the fifth gear 318 and the fourth gear 322 are the same. Since the radius of the fifth gear 318 is smaller than the radius of the fourth gear 322, the driving force of the fifth gear 318 is greater than the driving force of the fourth gear 322, that is, the amplified output force is transmitted to the second gear 315 through the fifth gear 318, so that the input of the torque of the fourth gear 322 can be reduced, that is, the input of the torque of the trigger 311 is reduced, and the labor-saving effect is achieved.

[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 meshed with the second bevel gear 317, that is, the torque of the first bevel gear 316 is the same as that of the second gear 315, and the output force of the second bevel gear 317 is the same as that of the first bevel gear 316. Since the radius of the first bevel gear 316 is smaller than that 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 input of the torque of the second gear 315, that is, further reducing the input of the torque of the trigger 311, and achieving a labor-saving effect.

[0061] Furthermore, the distance between the end of the trigger 311 away from the pawl 313 and the rotation axis of the trigger 311 is much larger than the distance between the rotation axis of the pawl 313 and the rotation axis of the trigger 311, that is, the trigger 311 is equivalent to a labor-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 a labor-saving effect.

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

[0063] Specifically, the retraction assembly 300 further includes a support frame, the trigger 311 is rotatably connected to the support frame, one end of the first elastic member 319 is connected to the support frame, and the other end is connected to an end of the trigger 311 close to the pawl 313, and the first elastic member 319 is used to apply a restoring force to the trigger 311, so that the trigger 311 is automatically reset under the action of the first elastic member 319, thereby achieving the effect of saving effort and improving efficiency. Preferably, the elastic member is a spring.

[0064] Furthermore, one end of the trigger 311 away from the pawl 313 extends outward relative to the support frame, and the first elastic member 319 is used to apply a thrust to the trigger 311. When the trigger 311 and the support frame are held by hand, the trigger 311 can be rotated 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 member 319, that is, the retraction of the transmission member 100 can be conveniently controlled by one hand through repeated operations of holding, opening, and holding with one hand.

[0065] See also Figure 1 and Figure 8 , Figure 8 A schematic diagram of the cooperation between the retraction assembly and the transmission member in the cutting and suturing device provided in another embodiment of the present invention. In one embodiment, the driving member 310 includes a rocker arm 370, and the rocker arm 370 is in transmission connection with the retraction gear 330. When the rocker arm 370 is operated to rotate, the retraction gear 330 can be driven to rotate, thereby driving the transmission member 100 to move.

[0066] Specifically, the output end of the rocker arm 370 is connected to the retraction gear 330 , and the retraction gear 330 can be driven to rotate by manually controlling the rocker arm 370 , thereby realizing the retraction of the transmission member 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 retraction 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 staggered on the axis of the retraction gear 330, that is, the third connecting rod 373 and the first connecting rod 371 have a certain distance in the radial direction of the retraction gear 330, thereby increasing the output torque of the first connecting rod 371 and achieving a labor-saving effect.

[0068] See also Figure 1 and Figure 8 In one embodiment, a retraction direction indicator mark is provided on the rocker arm 370, so that the retraction gear 330 can be quickly driven to rotate through the indicator mark to drive the transmission member 100 to retract, thereby improving the retraction efficiency.

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

[0070] In another embodiment, the rocker arm 370 unidirectionally controls the rotation of the retraction gear 330 through the ratchet pawl assembly, and a retraction direction indicator mark is provided on the rocker arm 370, thereby improving the reliability of the cutting and stapling device and improving the retraction efficiency.

[0071] See also Figure 1 and Fig. 9 , Fig. 9 A schematic diagram of the cooperation between the retraction assembly and the transmission member in the cutting and suturing device provided in another embodiment of the present invention. In one embodiment, the driving member 310 includes a retraction motor 340, and the retraction motor 340 is used for transmission connection with the retraction gear 330.

[0072] Specifically, the driving member 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 starting the retraction switch 342, the retraction motor 340 drives the retraction gear 330 to rotate, thereby driving the transmission member 100 to retract.

[0073] See also Figure 1 , Figure 2 and Figure 3 In one embodiment, an unlocking switch 411 is provided on the bracket 410, and the unlocking switch 411 is slidably connected to the bracket 410, and the unlocking switch 411 has an unlocking state and a locking state; the driving assembly 200 also includes a first shell 230, and the driving gear 220 and the driving motor 210 are connected to the first shell 230. When the unlocking switch 411 is in the locked state, it is used to abut the first shell 230 to fix the first shell 230 on the bracket 410. When the unlocking switch 411 is in the unlocking state, the unlocking switch 411 can be separated from the first shell 230 to release the first shell 230.

[0074] Specifically, a first inner cavity is constructed in the first shell 230, the drive motor 210 is accommodated in the first inner cavity, and the drive gear 220 is located outside the first shell 230. When the unlocking switch 411 is in a locked state, the first shell 230 can be stably limited to the installation position, so that the first shell 230 is stably connected to the bracket 410, so that the drive gear 220 can be stably connected to the transmission member 100, that is, the drive gear 220 is stably in the meshing position. When the retraction component 300 needs to be installed, the unlocking switch 411 is switched to the unlocking state, and the unlocking switch 411 can release the first shell 230, so that the first shell 230 can be separated from the bracket 410, so that the drive gear 220 is in the disengaged position.

[0075] Further, the unlocking switch 411 includes an unlocking plate 412 and a second elastic member 415. The bracket 410 is provided with a mounting groove 413, the unlocking plate 412 is slidably disposed in 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 is used to apply a thrust to the unlocking plate 412. The first housing 230 is provided with a boss 240. When the unlocking switch 411 is in a locked state, the unlocking plate 412 abuts against a side of the boss 240 away from the transmission member 100 to limit 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, so that the unlocking plate 412 moves away from the first housing 230 to release the boss 240, so that the first housing 230 can be moved away from the transmission member 100 to 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, so as to limit the first shell 230 from moving in directions other than the sliding direction of the unlocking plate 412, so that the connection between the first shell 230 and the bracket 410 is more stable.

[0077] In addition, a guide groove 414 is provided on the bracket 410, and the guide groove 414 is arranged on the side opposite to the unlocking plate 412. A guide rail 250 is provided on the side of the first shell 230 away from the boss 240. The guide rail 250 can cooperate with the guide groove 414 and be slidably connected relative to the groove wall of the guide groove 414 to guide the first shell 230 when it is installed relative to the bracket 410, while limiting the movement of the first shell 230 along the sliding direction of the unlocking plate 412.

[0078] Furthermore, the drive assembly 200 further 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, so that the drive motor 210 can be powered on, so that the drive motor 210 drives 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 powered off.

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

[0080] Specifically, the second housing 350 is configured as a support frame, a second accommodating chamber is configured in the second housing 350, the retraction gear 330 is disposed outside the second housing 350, the driving member 310 is accommodated in the second accommodating chamber, and the end of the trigger 311 away from the pawl 313 extends out of the second housing 350, that is, it is opened relative to the second housing 350. The structure of the second housing 350 is completely the same as that of the first housing 230, so that when the driving assembly 200 is separated from the bracket 410, the retraction assembly 300 can be stably connected to the bracket 410.

[0081] See also Figure 1 , Figure 2 and Figure 4 In one embodiment, the cutting and stapling device further includes a transfer gear 460, a plurality of transmission teeth 110 are provided on the transmission member 100, the transfer gear 460 is meshedly connected to the plurality of transmission teeth 110, and the transfer gear 460 is used to selectively mesh with one of the driving gear 220 and the retracting gear 330.

[0082] Specifically, when the driving assembly 200 is connected to the bracket 410, the transfer gear 460 is meshed and connected with the driving gear 220. When the retraction assembly 300 is connected to the bracket 410, the transfer gear 460 is meshed and connected with the retraction gear 330. The setting of the transfer gear 460 makes it easy to replace the transfer gear 460 when it is meshed with the driving gear 220 or the retraction gear 330, thereby improving the service life of the cutting and suturing device.

[0083] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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 above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A cutting and suturing device, characterized in that: The cutting and suturing device comprises: Bracket (410); an end effector (420) comprising a movable cutting member (430) for cutting tissue; A transmission member (100) is slidably connected to the support (410) and is operably connected to the cutting member (430); A drive assembly (200), comprising a drive gear (220) and a drive motor (210), wherein the drive gear (220) is connected to a power output end of the drive motor (210), and 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 in transmission connection with 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) comprises a driving member (310) and a retraction gear (330), wherein the retraction gear (330) is transmission-connected to the driving member (310), and when the driving gear (220) switches from the meshing position to the disengaging position, the retraction assembly (300) can be connected to the bracket (410) so that the retraction gear (330) is transmission-connected to the transmission member (100) to drive the transmission member (100) to move in a retraction direction.

2. The cutting and suturing device according to claim 1, characterized in that: The driving member (310) comprises 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); the ratchet (312) is transmission-connected to the retracting gear (330); The trigger (311) is configured to drive the pawl (313) to drive the ratchet wheel (312) to rotate in one direction when rotating relative to the bracket (410), so as to drive the retracting gear (330) to drive the transmission member (100) to move.

3. The cutting and suturing device according to claim 2, characterized in that: The driving member (310) further comprises a first bevel gear (316) and a second bevel gear (317); The first bevel gear (316) is transmission-connected to the ratchet (312) and meshingly connected to the second bevel gear (317); the second bevel gear (317) is coaxially connected to the retracting gear (330); By operating the trigger (311), the ratchet (312) can be driven to rotate in one direction through the pawl (313), so that the first bevel gear (316) drives the retracting gear (330) to rotate through the second bevel gear (317), thereby driving the transmission member (100) to move.

4. The cutting and suturing device according to claim 3, characterized in that: The driving 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 transmission-connected to the second gear (315); 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 through 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 suturing device according to claim 4, characterized in that: The driving member (310) further comprises a third gear (321) and a fourth gear (322), wherein the third gear (321) is meshingly connected with the first gear (314), and the fourth gear (322) is meshingly connected with the third gear (321) and is transmission-connected with the second gear (315).

6. The cutting and suturing device according to claim 5, characterized in that: The driving member (310) further comprises a fifth gear (318), wherein the fifth gear (318) is coaxially connected to the fourth gear (322) and meshingly connected to the second gear (315), and the radius of the fifth gear (318) is smaller than the radius of the fourth gear (322).

7. The cutting and suturing device according to claim 2, characterized in that: The retraction assembly (300) further comprises a first elastic member (319), wherein the first elastic member (319) is connected to the trigger (311), and the first elastic member (319) is used to apply a restoring force to the trigger (311).

8. The cutting and suturing device according to claim 1, characterized in that: The driving member (310) comprises a rocker arm (370), and the rocker arm (370) is in transmission connection with the retracting gear (330). When the rocker arm (370) is operated to rotate, the retracting gear (330) can be driven to rotate, thereby driving the transmission member (100) to move.

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

10. The cutting and suturing device according to claim 1, characterized in that: The driving member (310) comprises a retraction motor (340), and the retraction motor (340) is used for transmission connection with the retraction gear (330).

11. The cutting and suturing device according to any one of claims 1 to 10, characterized in that: The bracket (410) is provided with an unlocking switch (411), the unlocking switch (411) is slidably connected to the bracket (410), and the unlocking switch (411) has an unlocking state and a locking state; The driving assembly (200) further comprises a first housing (230), the driving gear (220) and the driving motor (210) being connected to the first housing (230), and the unlocking switch (411) being used to abut against the first housing (230) when the unlocking switch (411) is in the locked state so as to fix the first housing (230) on the bracket (410), and the unlocking switch (411) being able to separate from the first housing (230) when the unlocking switch (411) is in the unlocked state so as to release the first housing (230); and / or, the retraction component (300) further includes a second shell (350), the driving member (310) and the retraction gear (330) are connected to the second shell (350), and when the unlocking switch (411) is in the locked state, it is used to abut the second shell (350) to fix the second shell (350) on the bracket (410), and when the unlocking switch (411) is in the unlocking state, the unlocking switch (411) can be separated from the second shell (350) to release the second shell (350).

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