CN114041840A - Surgical stapling device with firing trigger arrangement - Google Patents

Abstract

The present disclosure discloses a surgical stapling device with a firing trigger arrangement comprising: the suture needle is arc-shaped, and a plurality of oblique grooves are uniformly formed in the outer side of the suture needle; the device main part, it includes that one sets up to long banding casing, casing one end is provided with the arc fluting, the arc fluting internal fixation is provided with the arc track, be provided with in the casing and carry out driven drive assembly to the sewing needle, still be provided with the trigger subassembly of control drive assembly on the casing. The surgical suture device provided by the invention changes the operation requiring manual suture into mechanical operation suture, can realize integral operation without additional energy, utilizes the reset force generated by the spring to drive the suture needle to move rapidly, punctures tissues and carries a suture thread to pass through, completes suture operation, is simple and convenient in integral operation, and increases suture efficiency.

Description

Surgical stapling device with firing trigger arrangement

Technical Field

The present invention relates to a stapling system, and in particular to a surgical stapling device with a firing trigger arrangement.

Background

Surgical suture is used for closing or reconstructing a channel of a cut or traumatized and fractured tissue and organ to restore the function of the tissue and organ, is a basic condition for ensuring good healing and is one of important basic surgical operations. However, in actual suturing operation, manual suturing is generally performed manually, and it is necessary to manually suture tissue with an arc-shaped suture, which is inefficient in suturing. With the popularization of the sewing equipment, the sewing efficiency and the sewing effect of different sewing positions are promoted. However, the existing suturing devices often need to be provided with additional energy, mainly electric energy, and use electric drive to suture, and when the suturing devices are used, the suturing effect is fixed, and the flexibility of manual suturing is lacked. More importantly, current suturing device needs the user to have certain operating capacity in carrying out the actual operation in-process, and in the field or the scene that the urgent needs sew up appears, current suturing device exists the inconvenience, finally leads to medical personnel still to have adopted the mode of manual sewing up, consequently need set up the sewing needle movement track in the manual sewing of simulation, does not need additionally to be equipped with the suturing device of the energy simultaneously, guarantees to adapt to and sews up the demand.

Disclosure of Invention

In view of the foregoing problems with the prior art, it is an object of the present invention to provide a surgical stapling device having a firing trigger arrangement that is purely mechanical in construction and that is convenient and quick to operate.

To achieve the foregoing objective and in accordance with one aspect of the present invention, a surgical stapling device with a firing trigger arrangement is provided comprising:

the suture needle is arc-shaped, and a plurality of oblique grooves are uniformly formed in the outer side of the suture needle;

the device main part, it includes that one sets up to long banding casing, casing one end is provided with the arc fluting, the arc fluting internal fixation is provided with the arc track, be provided with in the casing and carry out driven drive assembly to the sewing needle, still be provided with the trigger subassembly of control drive assembly on the casing.

Preferably, the driving assembly comprises four symmetrically arranged driving gears, the four driving gears are all rotatably arranged in the shell, and the arc-shaped track is provided with four openings communicated with the interior of the shell; four two liang of correspondences of drive gear are connected through the transmission of drive assembly, still be provided with two first racks in the casing, two first rack all slides and sets up in the casing, the casing internal fixation is provided with straight track, and first rack sets up in the protruding card of bar is gone into straight track in its below, still rotate in the casing and be provided with two driven gears, two driven gear is connected with two first rack toothing respectively, two the equal coaxial fixedly connected with driving pulley of driven gear, wherein two the equal coaxial fixedly connected with driven pulley of drive gear, two the driving pulley is connected with two driven pulley transmissions respectively through two driving belt.

Preferably, the transmission assembly comprises two transmission chain wheels, the two transmission chain wheels are respectively and fixedly connected with the two driving gears in a coaxial mode, and the two transmission chain wheels are in transmission connection through a transmission chain.

Preferably, the U-shaped connecting rod is arranged on the outer side of the shell and is provided with an operation ring, two ends of the U-shaped connecting rod penetrate through the shell and are fixedly connected with the two first racks respectively, an auxiliary straight rail is further arranged on the lower side of each first rack and is fixedly arranged in the shell, a sliding block is arranged in each auxiliary straight rail in a sliding mode and is fixedly connected with the corresponding first rack through an inverted L-shaped connecting column on the sliding block, and a reset spring is arranged in each auxiliary straight rail.

As preferred, the trigger subassembly includes a protective housing, the protective housing internal rotation is provided with rotates the piece, it goes up the fixed two wedge fixture blocks that are provided with of symmetry to rotate the piece, it runs through the mouth, two to be provided with two bars on the casing the bar runs through the mouth and corresponds with two first rack position respectively, the terminal surface is provided with the wedge draw-in groove that matches with the wedge fixture block under the first rack, it is still fixed to rotate the piece and is provided with the limiting plate of bending, limiting plate one end of bending is through a plurality of spacing springs and casing fixed connection, still be provided with the trigger subassembly that the operation rotated the piece on the protective housing.

Preferably, the number of the wedge-shaped clamping grooves positioned on the lower end face of the first rack is two.

As preferred, the trigger subassembly includes a pivot of setting in the protective housing, the pivot is all rotated and is connected with the fixing base, two the fixing base is all fixed to be set up in the protective housing, fixed cover is equipped with in the pivot dials the board, dial the board and correspond with the limiting plate position of bending, it is provided with the second rack to slide in the protective housing, it is provided with the bull stick to still rotate in the protective housing, the bull stick both ends are coaxial fixedly connected with first bevel gear and second bevel gear respectively, pivot one end is run through fixing base and coaxial fixedly connected with third bevel gear, third bevel gear is connected with second bevel gear meshing.

Preferably, an operating arm is further arranged outside the protective shell, the operating arm penetrates through the protective shell, extends into the protective shell and is fixedly connected with the second rack, a resisting spring is further fixedly arranged in the protective shell, and the resisting spring is fixedly connected with the operating arm.

Preferably, the part of the operating arm extending out of the protective shell is T-shaped and provided with an arc-shaped groove.

Preferably, the gear teeth of the driving gear are helical teeth matching the oblique slot on the suture needle.

Compared with the prior art, the surgical suture device with the trigger arrangement provided by the invention drives the two racks to move rapidly by utilizing the reset force of the spring, so that the suture needle is driven to move rapidly to suture the suture tissue. Compared with the traditional manual suturing mode, the suturing device disclosed by the invention can be operated by only placing tissues to be sutured in the arc-shaped groove, pulling the operating ring and then pressing the operating arm, so that a suturing action can be completed. This means that the suturing device of the present invention takes much less time to complete a single suturing operation than a manual suturing method. Compared with the existing automatic suturing mode, the suturing device does not need additional energy, and is simple in structure and operation. That is to say, the device has solved to the problem when sewing up, compares current suturing device and the mode of sewing up, has to sew up efficient, sew up effectual and convenient to use's advantage.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

This document provides an overview of various implementations or examples of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology.

Drawings

FIG. 1 is a schematic structural view of a surgical stapling device with a firing trigger arrangement of the present invention.

FIG. 2 is a structural schematic view from another perspective of a surgical stapling device with a firing trigger arrangement of the present invention.

FIG. 3 is a schematic illustration of the internal structure of a surgical stapling device with the firing trigger arrangement of the present invention.

FIG. 4 is a schematic view of the internal structure of another view of the downspout of the surgical stapling device of the firing trigger arrangement of the present invention.

FIG. 5 is a diagrammatic view of the firing trigger assembly of the control valve of the surgical stapling device with the firing trigger arrangement of the present invention.

FIG. 6 is a structural schematic view of a firing trigger assembly from another perspective of a surgical stapling device incorporating the firing trigger arrangement of the present invention.

FIG. 7 is a schematic structural view of a damping assembly of the surgical stapling device of the firing trigger arrangement of the present invention.

Description of the main reference numerals:

1-suture needle, 2-device body, 21-shell, 22-arc slot, 23-arc track, 24-driving component, 25-firing trigger component, 221-arc mounting strip, 241-driving gear, 242-transmission component, 243-first rack, 244-driven gear, 245-transmission belt, 246-U-shaped connecting rod, 247-operating ring, 248-driven pulley, 251-protective shell, 252-rotation component, 253-wedge-shaped fixture block, 254-bending limit plate, 255-limit spring, 256-trigger component, 2421-transmission chain wheel, 2422-transmission chain, 2431-auxiliary straight rail, 2432-slide block, 2433-inverted L-shaped connecting column, 2434-return spring and 2561-rotation shaft, 2562-a fixed seat, 2563-a shifting plate, 2564-a second rack, 2565-a rotating rod, 2566-a first bevel gear, 2567-a second bevel gear, 2568-a third bevel gear, 24311-a buffer structure, 24312-a damping rubber column, 24313-a buffer spring, 25641-an operating arm and 25642-a resisting spring.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described below clearly and completely with reference to the accompanying drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of the word "comprising" or "comprises", and the like, in this disclosure is intended to mean that the elements or items listed before that word, include the elements or items listed after that word, and their equivalents, without excluding other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

To maintain the following description of the embodiments of the present disclosure clear and concise, a detailed description of known functions and known components have been omitted from the present disclosure.

As shown in FIGS. 1 and 6, one embodiment of the present invention provides a surgical stapling device with a firing trigger arrangement comprising:

a suture needle 1 which is arc-shaped and is uniformly provided with a plurality of oblique slots on the outer side; in the actual sewing operation, in order to facilitate the sewing operation, the sewing needle usually adopts an arc structure, which is more beneficial to suture invasive injuries from body surfaces or tissue surfaces, and eliminates the inconvenience of a straight needle, the shape of the needle head of the sewing needle 1 can be selectively changed according to the sewing position, and the technology of the sewing needle is mature in the current actual sewing operation, and is not specifically stated in the application.

In addition, the device main body 2 is further included, because the structure of the invention is mainly convenient for people to suture wounds without manually carrying out all complicated suturing operations, in this exemplary embodiment, the device comprises a long-strip-shaped shell 21, one end of the shell 21 is provided with an arc-shaped slot 22, an arc-shaped track 23 is fixedly arranged in the arc-shaped slot 22, in order to ensure the safety of the suturing track 23, two arc-shaped mounting strips 221 are symmetrically arranged in the arc-shaped slot 22, the two arc-shaped mounting strips 221 respectively play a role in fixing the arc-shaped track 23 and limiting the suturing needle 1 in the arc-shaped track 23, the two arc-shaped mounting strips 221 can be fixed through a thread structure or a buckle structure, when the suturing needle 1 needs to be replaced according to the suturing tissues, one of the arc-shaped mounting strips 221 can be detached, and then the suturing needle 1 is replaced, meanwhile, in order to realize a sewing operation, according to an actual operation action, namely, the sewing needle 1 completes a circular track movement action, in the invention, the arc-shaped track 23 is mainly used for the movement of the sewing needle 1, the sewing needle 1 is arranged in the arc-shaped track 23 in a matching sliding manner, and meanwhile, in order to ensure that the sewing needle 1 can complete the action, a driving component 24 for driving the sewing needle 1 is arranged in the shell 21, and the driving operation of the driving component 24 for the sewing needle 1 is mainly realized through a plurality of inclined grooves on the sewing needle 1; meanwhile, in practice, the curved slot 22 is used for inserting the tissue to be sutured, and during the actual movement of the suturing needle 1, the portion of the suturing needle 1 passing through the tissue to be sutured is not limited by the curved track 23, and in order to ensure that the suturing needle 1 can fully complete a whole stroke, when the sharp end of the suturing needle 1 enters the curved track 23 after passing through the tissue to be sutured, the tail end of the suturing needle 1 should not be separated from the curved track 23; specifically, the driving assembly 24 should have a limited structure for the driving action of the suturing needle 1, so that the user can control the driving assembly 24 to perform the suturing operation when needed, therefore, in the present invention, the housing 21 is further provided with a trigger assembly 25 for controlling the driving assembly 24, the trigger assembly 25 can be conveniently controlled by the user, and the user can control the driving assembly 24 to perform one action by only pulling the trigger in the actual operation, so as to complete the movement of driving the suturing needle 1 to perform one driving stroke, thereby completing one suturing operation.

In the present invention, the driving assembly 24 mainly plays a role in driving the suturing needle 1, and the main function principle is realized by a plurality of inclined grooves on the outer side of the suturing needle 1, so, in some applications, unlike the general suturing needle 1 driving structure, as shown in fig. 3 and 4, the structure may preferably include four symmetrically arranged driving gears 241, the driving gears 241 adopt the existing gear structure, but in order to correspond to the inclined grooves, the gear teeth on the gear structure are modified into inclined teeth, so as to ensure a high driving force for the suturing needle 1, four driving gears 241 are all rotatably arranged inside the housing 21, four openings communicated with the inside of the housing 21 are arranged on the arc-shaped track 23, the four driving gears 241 respectively extend into the arc-shaped track 23 through the four openings, that is, the four driving gears 241 are distributed around the arc-shaped track 23, when the sewing needle 1 moves in the arc-shaped track 23, the sewing needle 1 is meshed with the four driving gears 241 one by one, so that the driving action on the sewing needle 1 is ensured to exist at any moment; the four driving gears 241 correspond to each other in pairs and are in transmission connection through the transmission assembly 242, the four driving gears 241 are respectively arranged into two groups and are in transmission in pairs, so that the four driving gears 241 are simultaneously driven without arranging a driving structure, the transmission assembly 242 comprises two transmission chain wheels 2421, the two transmission chain wheels 2421 are respectively and fixedly connected with the two driving gears 241 in a coaxial mode, the two transmission chain wheels 2421 are in transmission connection through a transmission chain 2422, in the actual using process, the four driving gears 241 can synchronously rotate by driving the two driving gears 241, and therefore one motion driving of the suture needle 1 is guaranteed; therefore, in the present invention, two first racks 243 are further disposed in the housing 21, the two first racks 243 are slidably disposed in the housing 21, the main sliding arrangement structure of the first rack 243 includes a straight track disposed in the housing 21, the first rack 243 has a strip-shaped protrusion disposed on a lower side thereof, the first rack is snapped into the straight track, one end of the straight track close to the arc-shaped slot 22 is closed, but one end of the straight track far from the arc-shaped slot 22 is open, so that a part of the first rack 243 can be separated from the straight track in the continuous sliding process; in order to realize the driving action of the two first racks 243 on the two driving gears 241, two driven gears 244 are further rotatably disposed in the housing 21, the two driven gears 244 are respectively engaged with the two first racks 243, the two driven gears 244 are both coaxially and fixedly connected with a driving pulley 245, the two driving gears 241 are both coaxially and fixedly connected with a driven pulley 248, the two driving pulleys 245 are respectively connected with the two driven pulleys 248 in a transmission manner through two transmission belts 245, in the actual operation process, only one transmission effect needs to be ensured, the transmission manner is a pulley transmission manner or a sprocket transmission manner, which does not affect the main function, here, in order to distinguish the transmission structure from the above, the transmission structure is set as a pulley transmission structure, in order to ensure that the rotation directions of the four driving gears 241 are the same, the directions of the two first racks 243 are the same, therefore, when the two first racks 243 are moved in synchronization, the four driving gears 241 may be simultaneously driven to move in synchronization.

In other embodiments of the present invention, in order to facilitate the control of the two first racks, and the two first racks have a driving function, so as to synchronously drive the two first racks to move, thereby completing the driving of the suture needle to move, and the movement should have a certain force application function, so that the suture needle has a certain penetrating force, thereby facilitating the suture operation; therefore, as shown in fig. 3, a U-shaped connecting rod 246 is further disposed outside the casing 21, an operation ring 247 is further configured on the U-shaped connecting rod 246, both ends of the U-shaped connecting rod 246 penetrate through the casing 21 and are respectively fixedly connected with the two first racks 243, a user can conveniently operate the U-shaped connecting rod 245 through the operation ring 247, so as to synchronously drive the two first racks 243 to move, pull the operation ring 247 outwards to a limit position, at this time, a needle head portion of the suturing needle 1 leaks out of the arc-shaped track 23 a little, most of the suturing needle 1 retracts into the arc-shaped track 23, at this time, when the first rack 243 is driven to reset, the four driving gears 241 are synchronously driven to rotate, so as to drive the suturing needle 1 to move, to puncture a tissue to be sutured in the arc-shaped slot 22, and at the same time, a suture thread is driven to pass through the tissue to be sutured through a threading end at the tail of the suturing needle 1, the sewing effect is quickly finished; in this process, it is required to ensure that the two first racks 243 have a force of moving and returning, therefore, in the present invention, an auxiliary straight rail 2431 is further provided at the lower side of the first rack 243, the auxiliary straight rail 2431 is fixedly provided in the housing 21, a slider 2432 is slidably provided in the auxiliary straight rail 2431, the slider 2432 is fixedly connected to the first rack 243 through an inverted L-shaped connecting post 2433 thereon, the slider 2432 can be driven to move when the first rack 243 moves, and similarly, the slider 2432 can also drive the first rack 243 to move when moving, a return spring 2434 is provided in the auxiliary straight rail 2431, one end of the return spring 2434 is fixedly connected to the inner wall of the auxiliary straight rail 2431, the other end of the return spring 2434 is fixedly connected to the slider 2432, when the first rack 243 is pulled to a limit position by the operating ring 247, the return spring 2434 is compressed to a limit, under the action of the elastic force of the return spring 2434, the two first racks 243 are quickly returned, so that one instant rotation of the four driving gears 241 is driven, and the suture needle 1 is subjected to suture puncturing operation and passes a suture line through the tissue to be sutured.

In addition, as shown in fig. 4 and 5, the firing trigger assembly 25 mainly limits the position of the driving assembly 24, specifically, mainly limits the positions of the two first racks 243, when the two first racks 243 are pulled to the limit positions, the positions of the two first racks 243 should be limited, after the suture needle 1 is aligned with the tissue to be sutured, the limitation on the two first racks 243 is released, and under the action of the two return springs 2434, the two first racks 243 are quickly returned and drive the four driving gears 21 to rotate through a series of transmissions, so as to drive the suture needle 1 to move, thereby completing a suturing operation; therefore, preferably, in some embodiments, the firing trigger assembly 25 includes a protective shell 251, a rotating member 252 is rotatably disposed in the protective shell 251, two wedge-shaped blocks 253 are symmetrically and fixedly disposed on the rotating member 252, two strip-shaped through holes are disposed on the housing 21, the two strip-shaped through holes respectively correspond to the two first racks 243 in position, in practical structural design, the bottom of the straight track is communicated with the strip-shaped through holes, so that the lower end surface of the first rack 243 is provided with a wedge-shaped slot matched with the wedge-shaped block 253, when the two first racks 243 are moved by pulling the operating ring 247, and the two first racks 243 are moved until the wedge-shaped blocks 253 and the wedge-shaped slot are matched, the wedge-shaped block 253 acts as a limitation to the first rack 243, and the position of the first rack 243 is limited by the above-mentioned transmission structure, at the moment, the whole suture needle 1 is positioned in the arc-shaped track 23, and the needle head of the suture needle 1 is positioned at the opening position at one end of the arc-shaped track 23; according to the actual operation requirement, the threading part at the tail end of the suture needle 1 needs to be threaded, but most of the suture needle 1 is in the arc-shaped track 23, so that the threading operation is inconvenient, in the invention, the number of the wedge-shaped clamping grooves arranged on the lower end surface of the first rack 243 is two, when the wedge-shaped clamping blocks 253 are clamped into the first wedge-shaped clamping groove, the tail end threading part of the suture needle 1 is just exposed in the arc-shaped open groove 22 at the position where the suture needle 1 is positioned, so that a user can conveniently carry out the threading operation, and then the two first racks 243 are pulled until the two wedge-shaped clamping blocks 253 are clamped into the two second wedge-shaped clamping grooves, so that the suture needle 1 is in a state capable of carrying out the puncture and the suture; in order to ensure that the two wedge-shaped clamping blocks 253 keep limiting, the rotating member 252 is further fixedly provided with a bending limiting plate 254, one end of the bending limiting plate 254 is fixedly connected with the housing 21 through a plurality of limiting springs 255, the two wedge-shaped clamping blocks 253 are limited through the limiting springs 255, so that the limiting effect of the wedge-shaped clamping blocks 253 is ensured when the wedge-shaped clamping blocks 253 are clamped into the wedge-shaped clamping grooves, and meanwhile, a trigger assembly 256 for operating the rotating member 252 is further arranged on the protective shell 251.

In the present invention, the trigger assembly 256 is mainly used for controlling the rotating component 252, and the actual control action is to force the rotating component 252 to rotate, so as to drive the two wedge-shaped blocks 253 to rotate out of the wedge-shaped slots, so as to enable the two first racks 243 to quickly reset under the action of the return spring 2434 to generate a firing action, therefore, preferably, as shown in fig. 5 and 6, the trigger assembly 256 includes a rotating shaft 2561 disposed in the protective housing 251, the rotating shaft 2561 is rotatably connected with the fixed seats 2562, the two fixed seats 2562 are fixedly disposed in the protective housing 251, a dial plate 2563 is fixedly disposed on the rotating shaft 2561, the dial plate 2563 corresponds to the position of the bending limiting plate 254, when the rotating shaft 2561 rotates, the bending limiting plate 254 can be driven by the dial plate 2563 to drive the rotating component 252 to rotate, in order to enable a user to conveniently operate, a second rack 2564 is slidably disposed in the protective housing 251, a rotating rod 2565 is further rotatably arranged in the protective shell 251, a first bevel gear 2566 and a second bevel gear 2567 are respectively and fixedly connected to two ends of the rotating rod 2565 coaxially, one end of the rotating rod 2561 penetrates through the fixed seat 2562 and is fixedly connected with a third bevel gear 2568 coaxially, the third bevel gear 2568 is engaged with the second bevel gear 2567, the first bevel gear 2566 is engaged with the second rack 2564, and the rotating rod 2561 can be driven to rotate in the moving process of the second rack 2564, so that the rotating member 252 can be controlled; in order to control the second rack 2564, an operation arm 25641 is further disposed outside the protection shell 251, the operation arm 25641 extends through the protection shell 251 to the inside and is fixedly connected with the second rack 2564, a resisting spring 25642 is further fixedly disposed inside the protection shell 251, the resisting spring 25642 is fixedly connected with the operation arm 25641, the operation arm 25641 is limited, and a portion of the operation arm 25641 exposed outside the protection shell 251 is T-shaped and provided with an arc-shaped groove, so that a user can press the operation arm with fingers conveniently.

Fig. 7 shows an exemplary structure of a buffer mechanism, and a buffer structure 24311 is preferably added on one side of the auxiliary straight rail 2431 and the inner part of the straight rail close to the arc-shaped slot 22, and the buffer structure 24311 has the function of buffering the two first racks 243 during firing, so that the structure can be a cylindrical damping structure, and strong collision of the first racks 243 during rapid resetting can be avoided. Specifically, as shown in fig. 7, it may exemplarily include a damping rubber column 24312 and a buffer spring 24313 sleeved on the damping rubber column 24312, where the damping rubber column 24312 and the buffer spring 24313 are both fixedly disposed inside the auxiliary straight rail 2431 or the straight rail, and it can be understood that this structure will effectively buffer the two first racks 243, avoid the shock caused by the collision due to the quick reset of the two first racks 243, and avoid the shock from affecting the use and the use experience of the user.

While there has been described what are believed to be the preferred embodiments of the present invention, it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the principles of the invention, and it is intended to cover all such changes and modifications as fall within the true scope of the invention.

Claims (10)

1. A surgical stapling device for a firing trigger arrangement, comprising:

the suture needle is arc-shaped, and a plurality of oblique grooves are uniformly formed in the outer side of the suture needle;

the device main part, it includes that one sets up to long banding casing, casing one end is provided with the arc fluting, the arc fluting internal fixation is provided with the arc track, be provided with in the casing and carry out driven drive assembly to the sewing needle, still be provided with the trigger subassembly of control drive assembly on the casing.

2. The suturing device of claim 1, wherein the drive assembly includes four symmetrically disposed drive gears, each of the four drive gears being rotatably disposed within the housing, the arcuate track defining four openings communicating with the interior of the housing; four two liang of correspondences of drive gear are connected through the transmission of drive assembly, still be provided with two first racks in the casing, two first rack all slides and sets up in the casing, the casing internal fixation is provided with straight track, and first rack sets up in the protruding card of bar is gone into straight track in its below, still rotate in the casing and be provided with two driven gears, two driven gear is connected with two first rack toothing respectively, two the equal coaxial fixedly connected with driving pulley of driven gear, wherein two the equal coaxial fixedly connected with driven pulley of drive gear, two the driving pulley is connected with two driven pulley transmissions respectively through two driving belt.

3. The suturing device of claim 2, wherein the drive assembly comprises two drive sprockets, the two drive sprockets are coaxially and fixedly connected with the two drive gears, and the two drive sprockets are in drive connection with each other through a drive chain.

4. The suturing device according to claim 2, further comprising a U-shaped connecting rod disposed outside the housing, wherein the U-shaped connecting rod further comprises an operating ring, both ends of the U-shaped connecting rod penetrate through the housing and are fixedly connected to the two first racks, respectively, an auxiliary straight rail is further disposed below the first racks, the auxiliary straight rail is fixedly disposed in the housing, a slider is slidably disposed in the auxiliary straight rail, the slider is fixedly connected to the first racks through an inverted L-shaped connecting column thereon, and a return spring is disposed in the auxiliary straight rail.

5. The suturing device according to claim 2, wherein the firing trigger assembly comprises a protective shell, a rotating member is rotatably disposed in the protective shell, two wedge-shaped fixture blocks are symmetrically and fixedly disposed on the rotating member, two strip-shaped through holes are disposed in the shell, the two strip-shaped through holes respectively correspond to two first rack positions, wedge-shaped clamping grooves matched with the wedge-shaped fixture blocks are formed in the lower end faces of the first racks, a bending limiting plate is further fixedly disposed on the rotating member, one end of the bending limiting plate is fixedly connected with the shell through a plurality of limiting springs, and a trigger assembly for operating the rotating member is further disposed on the protective shell.

6. The suturing device of claim 5, wherein there are two wedge-shaped slots located on a lower end surface of the first rack.

7. The suturing device according to claim 5, wherein the trigger assembly comprises a rotating shaft disposed inside the protective housing, the rotating shaft is rotatably connected with fixed seats, the fixed seats are fixedly disposed inside the protective housing, the rotating shaft is fixedly sleeved with a shifting plate, the shifting plate corresponds to the position of the bending limiting plate, a second rack is slidably disposed inside the protective housing, a rotating rod is rotatably disposed inside the protective housing, a first bevel gear and a second bevel gear are coaxially and fixedly connected to two ends of the rotating rod, a third bevel gear is coaxially and fixedly connected to one end of the rotating shaft and penetrates through the fixed seats, and the third bevel gear is meshed with the second bevel gear.

8. The suturing device according to claim 7, further comprising an operating arm disposed outside the protective housing, wherein the operating arm extends through the protective housing to the inside thereof and is fixedly connected to the second rack, and a tightening spring is further fixedly disposed inside the protective housing, and the tightening spring is fixedly connected to the operating arm.

9. The suturing device of claim 8, wherein the portion of the actuating arm extending outside the protective sheath is T-shaped and defines an arcuate slot.

10. The suturing device of claim 1, wherein the gear teeth of the drive gear are beveled teeth that match a beveled slot on the suturing needle.

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