Sewing device driven by gear rotation

Abstract

The invention provides a suturing device driven by gear rotation. The suturing device comprises a mounting frame body, an arc-shaped suturing needle, a gear assembly, a control device and a clamping assembly. And an arc-shaped groove is formed in the mounting frame body. A transmission gear in the gear assembly rotates through the control device, due to the fact that the transmission gear is meshed with meshing teeth fixedly arranged in the circumferential direction of an arc-shaped groove, the transmission gear can move in the circumferential direction of the arc-shaped groove, and the transmission gear drives the clamping assembly to move so as to drive an arc-shaped suture needle to move to suture human tissue. As the moving track of the transmission gear is the length of the whole arc-shaped groove, the transmission gear can drive the arc-shaped suture needle to rotate by 180 degrees at a time, and therefore the frequency of operation needed for driving the arc-shaped suture needle to suture the human tissue once is reduced. Besides, the transmission gear and the meshing teeth form a structure similar to a planetary gear, and the structure is compact, high in efficiency, small in power loss, balanced in transmission and high in impact and vibration resistance, so that the driving force of the control device can be transmitted more accurately and stably.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of endoscopic minimally invasive surgery, in particular to a gear rotation driven suturing device for suturing human mucosal tissue defects / wounds under endoscopy. BACKGROUND

[0002] With the development of endoscopic technology, soft endoscopic minimally invasive surgery has been promoted, which enables more and more diseases to be treated by minimally invasive surgery. However, the problem of human tissue defects / wounds caused by minimally invasive surgery, especially the problem of gastrointestinal mucosal tissue defects / wounds, needs to be solved urgently. Whether the defects / wounds can be efficiently and reliably sutured directly affects the prognosis of patients.

[0003] Currently, for hard endoscopic minimally invasive surgery and surgical laparotomy, the main way to suture defects / wounds is through suturing thread. This method is firm and does not require other auxiliary devices to assist in implementation. Undoubtedly, it causes little damage to the human body and is beneficial to the healing of defects / wounds. In hard endoscopic minimally invasive surgery, there are many existing technologies of minimally invasive instruments for suturing defects / wounds through suturing thread. Such minimally invasive instruments do not require surgeons to use their hands to perform "threading", but only need to operate the instrument handle to efficiently complete "threading" to implement suturing, which greatly improves the operation efficiency and reduces the operation difficulty. In this type of existing technology, the most concerned is the "C-shaped arc needle suture device" under surgical hard endoscopy, which has many existing technologies and is also limited to the field of surgical hard endoscopic minimally invasive surgery. However, in the field of soft endoscopic minimally invasive surgery, there are few existing technologies similar to the "C-shaped arc needle suture device".

[0004] Unlike hard endoscopes, soft endoscopes have long and flexible mirror bodies that can be bent, and the working channel of the endoscope has a small inner diameter. Therefore, developing a "C-shaped arc needle suture device" presents great challenges. In addition, the "C-shaped arc needle suture device" under hard endoscopy has technical protection, which undoubtedly limits the development of soft endoscopic technology and the treatment of diseases. Currently, the few existing technologies of "C-shaped arc needle suture device" under soft endoscopy are also limited, mainly including: the arc-shaped needle can only rotate a small angle with each drive of the "C-shaped arc needle suture device", and multiple drives of the "C-shaped arc needle suture device" are required to complete one suturing action of the arc-shaped needle, which is not efficient. In addition, the stability and precision of the "C-shaped arc needle suture device" are not enough. SUMMARY

[0005] To achieve the above object, the application provides a gear rotation driven suturing device, which comprises a mounting frame body, a suturing groove and an arc-shaped groove arranged circumferentially along the suturing groove are arranged on the mounting frame body, engagement teeth are fixedly arranged circumferentially along the arc-shaped groove, and the suturing groove is configured to accommodate human tissues; an arc-shaped suturing needle is arranged in the arc-shaped needle groove of the mounting frame body and can rotate relative to the mounting frame body, and the arc-shaped suturing needle can pass through the suturing groove; a gear assembly is arranged in the arc-shaped groove, a transmission gear in the gear assembly is engaged with the engagement teeth, the transmission gear can rotate relative to the mounting frame body to enable the gear assembly to move along the circumferential direction of the arc-shaped groove in the arc-shaped groove; a control device is arranged in the mounting frame body and connected with the gear assembly, the control device is configured to drive the transmission gear to rotate relative to the mounting frame body; and a clamping assembly is arranged on the gear assembly, the clamping assembly comprises an elastic support and an interference piece, one end of the interference piece is connected with the elastic support, and the other end of the interference piece can interfere with the arc-shaped suturing needle; wherein when the gear assembly drives the clamping assembly to rotate in a first direction, the interference piece can interfere with the arc-shaped suturing needle, and when the gear assembly drives the clamping assembly to rotate in a second direction, the interference piece is separated from the arc-shaped suturing needle, and the first direction is opposite to the second direction.

[0006] The gear rotation driven suturing device as described above, wherein the control device comprises a first rotating wheel rotatably arranged on the mounting frame body, a transmission belt respectively sleeved on the first rotating wheel and the gear assembly, a tensioning assembly rotatably connected with the first rotating wheel and abutting against the transmission belt, and a first control cable coiled on the first rotating wheel, the first control cable being configured to drive the first rotating wheel to rotate in two opposite directions.

[0007] The gear rotation driven suturing device as described above, wherein the tensioning assembly comprises a connecting arm having one end rotatably connected with the first rotating wheel, a tensioning wheel arranged at the other end of the connecting arm and abutting against the transmission belt, and an elastic piece arranged between the connecting arm and the mounting frame body.

[0008] The gear rotation driven suturing device as claimed in the above, wherein the control device comprises two steering wheels rotatably arranged on the mounting frame body and arranged adjacent to two ends of the arc-shaped slot respectively, and a second control cable wound around the gear assembly, the second control cable being configured to drive the transmission gear to rotate in two opposite directions; the control device is arranged in a receiving cavity of the mounting frame body, a limiting member is arranged between the receiving cavity and the suturing slot, and the second control cable between the steering wheel and the gear is capable of pressing against the limiting member.

[0009] The gear rotation driven suturing device as claimed in the above, wherein the limiting member is a roller or a baffle.

[0010] The gear rotation driven suturing device as claimed in the above, wherein the control device further comprises a guide wheel rotatably arranged on the mounting frame body, the guide wheel being connected with the second control cable and configured to guide the second control cable after being steered by the steering wheel.

[0011] The gear rotation driven suturing device as claimed in the above, wherein the gear assembly is provided with a first annular slot and a second annular slot side by side; the control device comprises a second steering wheel rotatably arranged on the mounting frame body, the second steering wheel being provided with a first steering wheel slot and a second steering wheel slot, the first steering wheel slot being arranged at a position corresponding to the first annular slot, and the second steering wheel slot being arranged at a position corresponding to the second annular slot; a first control cable, one end of the first control cable being wound in the first annular slot, the other end of the first control cable being wound in the first steering wheel slot and extending out of the mounting frame body, the first control cable being configured to control the transmission gear to rotate in a first rotation direction; and a second control cable, one end of the second control cable being wound in the second annular slot, the other end of the second control cable being wound in the second steering wheel slot and extending out of the mounting frame body, the second control cable being configured to control the transmission gear to rotate in a second rotation direction opposite to the first rotation direction.

[0012] The gear rotation driven suturing device as claimed in the above, wherein the gear assembly is provided with a third annular slot and a fourth annular slot side by side; the control device comprises a third control cable and a fourth control cable; the third control cable is wound in the third annular slot, the third control cable being configured to control the transmission gear to rotate in a first rotation direction; and the fourth control cable is wound in the fourth annular slot, the fourth control cable being configured to control the transmission gear to rotate in a second rotation direction opposite to the first rotation direction.

[0013] The gear rotation driven suturing device as claimed in any one of the above, wherein the mounting frame body comprises a mounting shell provided with a receiving space, and a mounting assembly provided in the receiving space, the suturing groove is located on the mounting assembly, and the gear assembly, the control device and the clamping assembly are provided on the mounting assembly; wherein the mounting assembly comprises a fixing assembly comprising a first mounting plate and a fixing plate, the first mounting plate is provided with a first needle groove, the fixing plate is provided with a second needle groove, and the first needle groove and the second needle groove form the arc-shaped needle groove, and the gear assembly, the control device and the clamping assembly are provided on the fixing plate or the first mounting plate.

[0014] The gear rotation driven suturing device as claimed in any one of the above, wherein the mounting assembly further comprises a limiting structure interfering with the first mounting plate.

[0015] The gear rotation driven suturing device as claimed in any one of the above, wherein the limiting structure comprises a connecting portion and a stop portion, the stop portion has an included angle with the connecting portion, the limiting structure is in the shape of "L" as a whole, the connecting portion is connected with the mounting shell, and the stop portion is pressed against the first mounting plate.

[0016] The gear rotation driven suturing device as claimed in any one of the above, wherein the two opposite sidewalls of the receiving space are provided with clamping grooves, the connecting portion is provided with elastic sheets, and the elastic sheets are clamped in the clamping grooves.

[0017] The gear rotation driven suturing device as claimed in any one of the above, wherein the elastic sheets are provided with pressing plates extending away from the connecting portion, and the pressing plates are configured to drive the elastic sheets to deform.

[0018] The gear rotation driven suturing device as claimed in any one of the above, wherein the mounting assembly further comprises a limiting cover plate, an installation cavity is provided between the limiting cover plate and the fixing assembly, and the gear assembly, the control device and the clamping assembly are located in the installation cavity.

[0019] The gear rotation driven suturing device as claimed in any one of the above, wherein the mounting frame body comprises a second mounting plate, the arc-shaped groove is provided on the second mounting plate, the second mounting plate comprises a plate body and a gear rack, the plate body is provided with a mounting groove, the gear rack is fixed in the mounting groove and forms the arc-shaped groove with the groove wall of the mounting groove.

[0020] The suture device driven by gear rotation as described above, wherein the gear assembly comprises two transmission gears and a connecting rod connecting the two transmission gears; two arc-shaped slots are arranged on the mounting frame body in the axial direction of the connecting rod, and the two transmission gears are arranged in the two arc-shaped slots respectively; the clamping assembly is connected with the connecting rod.

[0021] The suture device driven by gear rotation as described above, wherein the mounting frame body comprises a third mounting plate, and the arc-shaped needle slot is located on the third mounting plate; the third mounting plate comprises a main plate and a cover plate.

[0022] A first slot is arranged on the main plate; a flange is arranged on the cover plate in the circumferential direction of the suture slot, and the flange extends towards the main plate; the cover plate and the flange form a second slot; the cover plate is arranged on the main plate, the second slot and the first slot are in communication to form the arc-shaped needle slot, and the flange and the slot wall of the suture slot form the opening of the arc-shaped needle slot.

[0023] The suture device driven by gear rotation as described above, wherein a limiting sliding groove is further arranged on the mounting frame body, and a limiting sliding block is arranged on the gear assembly, and the limiting sliding block is arranged in the limiting sliding groove.

[0024] Compared with the prior art, the above technical solution has the following advantages:

[0025] The transmission gear in the gear assembly is controlled to rotate by the control device, and the transmission gear moves along the circumferential direction of the arc-shaped slot due to the engagement of the transmission gear with the engagement teeth fixedly arranged in the circumferential direction of the arc-shaped slot, and the transmission gear drives the clamping assembly to move to drive the arc-shaped suture needle to move to suture the human tissue. Since the movement track of the transmission gear is the length of the entire arc-shaped slot, the transmission gear can drive the arc-shaped suture needle to rotate 180° at a time, thereby reducing the number of operations required to drive the arc-shaped suture needle to suture the human tissue once, reducing the operation difficulty of the product, and improving the use efficiency of the product. In addition, the transmission gear and the engagement teeth form a structure similar to a planetary gear, and the above structure is compact, efficient, has small power loss, balanced transmission, and strong anti-impact vibration capability, thereby being able to more accurately and stably transmit the driving force of the control device, so that the arc-shaped suture needle has sufficient puncture force to enable the arc-shaped suture needle to quickly and effectively penetrate the human tissue, thereby improving the suture efficiency and implementation reliability of the product. BRIEF DESCRIPTION OF DRAWINGS

[0026] The following drawings are only intended to illustrate and explain the present application and do not limit the scope of the present application. Among them:

[0027] Figure 1 is an exploded structural schematic view of the first embodiment of the suture device driven by gear rotation described in the present application;

[0028] Figure 2 yes Figure 1 A partial cross-sectional schematic diagram of the structure of the suture device in its first state;

[0029] Figure 3 yes Figure 1 A partial cross-sectional schematic diagram of the structure of the suture device in the second state (the arc needle is driven to rotate 180°);

[0030] Figure 4 yes Figure 1 A partial structural schematic diagram of the suture device shown;

[0031] Figure 5 yes Figure 1 A schematic diagram of the structure of the first mounting plate shown in the figure;

[0032] Figure 6 yes Figure 1 A schematic diagram of the gear assembly and the snap-fit ​​assembly shown in the figure;

[0033] Figure 7 yes Figure 6 A cross-sectional view of the structure shown.

[0034] Figure 8 yes Figure 1 A schematic diagram of the structure of the limiting cover plate shown in the figure;

[0035] Figure 9 This is a schematic diagram of another embodiment of the first mounting plate of this application;

[0036] Figure 10 This is an exploded structural diagram of a second embodiment of the gear-driven sewing device described in this application;

[0037] Figure 11 yes Figure 10 A partial cross-sectional schematic diagram of the structure of the suture device in its first state;

[0038] Figure 12 yes Figure 10 A partial cross-sectional schematic diagram of the structure of the suture device in the second state (the arc needle is driven to rotate 180°);

[0039] Figure 13 yes Figure 10 A three-dimensional structural schematic diagram of the suture device shown;

[0040] Figure 14 yes Figure 13 Enlarged structural diagram of section A in the middle;

[0041] Figure 15is an exploded structural schematic view of a third embodiment of the gear-rotating-driven suturing device described in the present application;

[0042] Figure 16 is Figure 15 is a partial cross-sectional schematic view of the structure of the suturing device shown in a first state;

[0043] Figure 17 is Figure 15 is a partial cross-sectional schematic view of the structure of the suturing device shown in a second state;

[0044] Figure 18 is an exploded structural schematic view of a fourth embodiment of the gear-rotating-driven suturing device described in the present application;

[0045] Figure 19 is Figure 18 is a perspective structural schematic view of the suturing device shown;

[0046] Figure 20 is Figure 19 is an enlarged structural schematic view of part B in

[0047] Figure 21 is Figure 18 is a structural schematic view of the mounting shell in

[0048] Figure 22 is Figure 21 is an enlarged structural schematic view of part C in

[0049] Figure 23 is an exploded structural schematic view of a fifth embodiment of the gear-rotating-driven suturing device described in the present application;

[0050] Figure 24 is Figure 23 is a partial cross-sectional schematic view of the structure of the suturing device shown in a first state;

[0051] Figure 25 is Figure 23 is a partial cross-sectional schematic view of the structure of the suturing device shown in a second state (the arcuate needle is driven to rotate 180°);

[0052] Figure 26 is an exploded structural schematic view of a sixth embodiment of the gear-rotating-driven suturing device described in the present application;

[0053] Figure 27 is Figure 26 is a partial cross-sectional schematic view of the structure of the suturing device shown in a first state;

[0054] Figure 28 is Figure 26 is a partial cross-sectional schematic view of the structure of the suturing device shown in a second state (the arcuate needle is driven to rotate 180°).

[0055] BRIEF DESCRIPTION OF DRAWINGS

[0056] 10 mounting frame; 11 suture slot; 12 arcuate slot; 13 engagement tooth;

[0057] 14 mounting shell; 141 accommodating space; 142 clamping groove;

[0058] 15 mounting assembly; 151 first mounting plate; 152 fixed plate;

[0059] 153 limiting structure; 1531 connecting portion; 1532 stop portion; 1533 elastic piece; 1534 pressing plate; 154 limiting cover plate;

[0060] 16 second mounting plate; 161 plate body; 162 rack;

[0061] 17 third mounting plate; 171 main plate; 172 cover plate; 173 first slot; 174 flange; 175 second slot;

[0062] 18 limiting sliding groove;

[0063] 19 arcuate needle slot; 191 opening;

[0064] 20 arcuate suture needle;

[0065] 30 gear assembly; 31 transmission gear; 32 connecting rod; 33 first annular slot; 34 second annular slot; 35 third annular slot; 36 fourth annular slot; 37 limiting sliding block;

[0066] 40 control device;

[0067] 411 first rotating wheel; 412 transmission belt; 413 tensioning assembly; 4131 connecting arm; 4132 tensioning wheel; 4133 elastic member; 414 first control cable;

[0068] 421 steering wheel; 422 second control cable; 423 limiting member; 424 guide wheel;

[0069] 431 second rotating wheel; 432 first control line; 433 second control line; 434 first rotating wheel slot; 435 second rotating wheel slot;

[0070] 441 third control line; 442 fourth control line;

[0071] 50 clamping assembly; 51 elastic supporting member; 52 interference member;

[0072] 100 endoscope. DETAILED DESCRIPTION

[0073] The application will be further described by the following drawings and examples. The features and advantages of the present application will become more apparent from the detailed description in conjunction with the drawings.

[0074] The term "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any implementation described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations. Unless specifically stated otherwise, the drawings are not drawn to scale and are merely intended to conceptually illustrate aspects of the embodiments.

[0075] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as there is no conflict. The following discussion provides a plurality of embodiments of the present application. Although each embodiment represents a single combination of the application, different embodiments of the present application can be replaced or combined, and therefore the present application can also be considered to include all possible combinations of the same and / or different embodiments described. Thus, if one embodiment includes A, B, and C, and another embodiment includes a combination of B and D, the present application should also be considered to include embodiments containing one or more of all other possible combinations of A, B, C, and D, even if the embodiment is not explicitly described in the following content. In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0076] As shown in Figures 1 to 28 The suture device driven by gear rotation provided by the present application comprises a mounting frame body 10, an arc-shaped suture needle 20, a gear assembly 30, a control device 40, and a clamping assembly 50.

[0077] The mounting frame body 10 is provided with a suture groove 11 and an arc-shaped groove 12 circumferentially arranged along the suture groove 11, and the arc-shaped groove 12 is fixedly provided with engagement teeth 13 in the circumferential direction. The suture groove 11 is configured to accommodate human tissues. The mounting frame body 10 can be sleeved on an endoscope 100 through a mounting shell 14.

[0078] The arc-shaped suture needle 20 is arranged in an arc-shaped needle groove 19 of the mounting frame body 10 and can rotate relative to the mounting frame body 10, and the arc-shaped suture needle 20 can pass through the suture groove 11.

[0079] The gear assembly 30 is arranged in the arc-shaped groove 12, and a transmission gear 31 in the gear assembly 30 is engaged with the engagement teeth 13. The transmission gear 31 can rotate relative to the mounting frame body 10 to move the gear assembly 30 in the arc-shaped groove 12 along the circumferential direction of the arc-shaped groove 12.

[0080] The control device 40 is arranged in the mounting frame body 10 and connected with the gear assembly 30, and the control device 40 is configured to drive the transmission gear 31 to rotate relative to the mounting frame body 10.

[0081] The clamping assembly 50 is arranged on the gear assembly 30, and the clamping assembly 50 comprises an elastic support 51 and an interference piece 52, one end of the interference piece 52 is connected with the elastic support 51, and the other end of the interference piece 52 can interfere with the arc-shaped suture needle 20.

[0082] When the gear assembly 30 drives the clamping assembly 50 to rotate in the first direction, the interference piece 52 can interfere with the arc-shaped suture needle 20, and when the gear assembly 30 drives the clamping assembly 50 to rotate in the second direction, the interference piece 52 is separated from the arc-shaped suture needle 20, and the first direction is opposite to the second direction.

[0083] The operator controls the transmission gear 31 in the gear assembly 30 to rotate in the first self-rotation direction along the axis core of the transmission gear 31 through the control device 40, and since the transmission gear 31 is engaged with the meshing teeth 13 fixedly arranged in the circumferential direction of the arc-shaped groove 12, the transmission gear 31 is simultaneously moved in the first direction along the circumferential direction of the arc-shaped groove 12, and the transmission gear 31 drives the clamping assembly 50 to move in the first direction from the initial position, at this time, the clamping assembly 50 interferes with the arc-shaped suture needle 20, so that the clamping assembly 50 drives the arc-shaped suture needle 20 to rotate 180° relative to the mounting frame body 10, so that the arc-shaped suture needle 20 penetrates the human tissue, and when the clamping assembly 50 reaches the end position; the operator controls the transmission gear 31 in the gear assembly 30 to rotate in the second self-rotation direction through the control device 40, so that the transmission gear 31 is moved in the second direction along the circumferential direction of the arc-shaped groove 12, and the clamping assembly 50 is separated from the arc-shaped suture needle 20, so that the clamping assembly 50 returns to the initial position, and the above operation is repeated to make the arc-shaped suture needle 20 rotate one circle relative to the mounting frame body 10, so as to complete a “threading” operation relative to the human tissue to make the suture penetrate the human tissue; in sequence, the suture is rotated one circle relative to the mounting frame body 10 for multiple times to realize the suturing of the human tissue defect / wound. Since the moving track of the transmission gear 31 is the length of the entire arc-shaped groove 12, the transmission gear 31 can drive the arc-shaped suture needle 20 to rotate 180° at a time, thereby reducing the number of operations required for driving the arc-shaped suture needle 20 to suture the human tissue at a time, reducing the operation difficulty of the product, and improving the use efficiency of the product.

[0084] In addition, the transmission gear 31 and the meshing gear 13 form a structure similar to a planetary gear. The above structure is compact, efficient, has low power loss, balanced transmission, and strong resistance to impact and vibration. This enables more precise and stable transmission of the driving force of the control device 40, so that the arc-shaped suture needle 20 has sufficient puncture force, allowing the arc-shaped suture needle 20 to quickly and effectively penetrate human tissue, thereby improving the suturing efficiency and implementation reliability of the product.

[0085] like Figures 5 to 8 As shown in one embodiment of this application, the gear assembly 30 includes two transmission gears 31 and a connecting rod 32 connecting the two transmission gears 31. Along the axial direction of the connecting rod 32, the mounting frame 10 is provided with two arc-shaped grooves 12, and the two transmission gears 31 are respectively disposed within the two arc-shaped grooves 12. Specifically, the first mounting plate 151 is provided with one arc-shaped groove 12, and the fixing plate 15 is provided with another arc-shaped groove 12.

[0086] The snap-fit ​​assembly 50 is connected to the connecting rod 32.

[0087] The two transmission gears 31 limit and guide the gear assembly 30, preventing the gear assembly 30 from dislodging from the arc groove 12, thus ensuring the stability of the gear assembly 30's operation and improving the product's reliability.

[0088] like Figure 9 As shown, in one embodiment of this application, the mounting frame 10 includes a second mounting plate 16.

[0089] An arc-shaped groove 12 is provided on the second mounting plate 16, which includes a plate body 161 and a rack 162. The plate body 161 is provided with a mounting groove. Depending on the manufacturing process, it is not limited to integral molding. The pre-machined rack 162 can be assembled onto the plate body 161 to form matching meshing teeth 13.

[0090] The rack 162 is fixed in the mounting groove and forms an arc groove 12 with the groove wall of the mounting groove.

[0091] The second mounting plate 16 is divided into two parts, which can be manufactured separately, thereby reducing the manufacturing difficulty of the second mounting plate 16 and thus reducing the production cost of the product.

[0092] like Figure 13 and Figure 14 As shown, in one embodiment of this application, the mounting frame 10 includes a third mounting plate 17, and an arc-shaped pin groove 19 is located on the third mounting plate 17.

[0093] The third mounting plate 17 includes a main board 171 and a cover plate 172.

[0094] The main plate 171 is provided with a first slot 173.

[0095] The cover plate 172 is provided with a flange 174 circumferentially arranged along the suture slot 11, and the flange 174 extends towards the main plate 171, and the cover plate 172 and the flange 174 form a second slot 175.

[0096] The cover plate 172 is arranged on the main plate 171, the second slot 175 and the first slot 173 are communicated to form an arc-shaped needle slot 19, and the flange 174 and the slot wall of the suture slot 11 form an opening 191 of the arc-shaped needle slot 19.

[0097] The above structure makes the opening 191 of the arc-shaped needle slot 19 be open and arranged towards the working channel and lens of the endoscope 100, so that when the arc-shaped suture needle 20 rotates in the arc-shaped needle slot 19, the suture connected with the arc-shaped suture needle 20 smoothly exits the arc-shaped needle slot 19, avoiding the suture interfering with the arc-shaped suture needle 20 in the rotating process, thereby reducing the probability of the suture winding in the arc-shaped needle slot 19, and ensuring the smooth suturing of the arc-shaped suture needle 20 to the human tissue.

[0098] As shown in Figures 1 to 3 , Figures 10 to 12 , Figures 15 to 17 , Figures 23 to 25 , Figures 26 to 28 In an embodiment of the present application, the mounting frame body 10 includes a mounting shell 14 and a mounting assembly 15.

[0099] The mounting shell 14 is provided with a containing space 141. The mounting shell 14 can be sleeved on the endoscope 100. The mounting shell 14 is a kind of assembly structure, which is not limited to the technical mention, and different structures can be selected according to the assembly mode of the mounting assembly 15, for example, the technical mentioned clamping groove type structure, or direct welding or riveting assembly of the mounting assembly 15, etc.

[0100] The mounting assembly 15 is arranged in the containing space 141 and fixedly connected with the mounting shell 14, the suture slot 11 is located on the mounting assembly 15, and the gear assembly 30, the control device 40 and the clamping assembly 50 are arranged on the mounting assembly 15.

[0101] The mounting assembly 15 includes a fixing assembly.

[0102] The fixing assembly includes a first mounting plate 151 and a fixing plate 152.

[0103] The first mounting plate 151 is provided with a first needle slot.

[0104] The fixing plate 152 is provided with a second needle slot, and the first needle slot and the second needle slot form the arc-shaped needle slot 19.

[0105] The gear assembly 30, the control device 40 and the clamping assembly 50 are arranged on the fixing plate 152 or the first mounting plate 151.

[0106] The installation assembly 15 has a small volume in the suturing device, and the plurality of plates cooperatively constitute the installation assembly 15, so that the installation assembly 15 has a large installation space, thereby facilitating the installation of other components such as the gear assembly 30, the control device 40 and the clamping assembly 50, improving the space utilization of the product, and making the structure of the product more compact.

[0107] In an embodiment of the present application, the installation assembly 15 further comprises a limiting structure 153.

[0108] The limiting structure 153 is connected with the mounting shell 14 and interferes with the first mounting plate 151. The limiting structure 153 functions to fix the first mounting plate 151. The limiting structure 153 can be removed, so that the first mounting plate 151 can be disassembled when necessary, so as to replace a new arc-shaped suturing needle 20 and detect when the suturing needle 20 is jammed.

[0109] As shown in Figures 18 to 22 In a specific embodiment of the present application, the limiting structure 153 is a limiting plate, which comprises a connecting portion 1531 and a stop portion 1532. The stop portion 1532 has an included angle with the connecting portion 1531. The limiting structure 153 has an overall "L" shape. The connecting portion 1531 is movably connected with the mounting shell 14, and the stop portion 1532 abuts against the first mounting plate 151.

[0110] The limiting plate has a large contact area, so that the fixing reliability of the first mounting plate 151 can be improved.

[0111] As shown in Figures 18 to 22 In an embodiment of the present application, the two opposite side walls of the accommodating space 141 are provided with clamping grooves 142, and the connecting portion 1531 is provided with a spring piece 1533 clamped in the clamping groove 142. That is, the limiting structure 153 is clamped with the mounting shell 14.

[0112] The clamping connection mode is simple and convenient to assemble, thereby improving the assembly efficiency of the product and reducing the production cost of the product.

[0113] In an embodiment of the present application, the installation assembly 15 further comprises a limiting cover plate 154.

[0114] The limiting cover plate 154 is provided with a mounting cavity between the fixing assembly, and the gear assembly 30, the control device 40 and the clamping assembly 50 are located in the mounting cavity.

[0115] The setting of the limiting cover plate 154 plays a limiting role on the gear assembly 30, the control device 40 and the clamping assembly 50, prevents the gear assembly 30, the control device 40 and the clamping assembly 50 from being detached from the mounting assembly 15, and makes the assembly structure of the gear assembly 30, the control device 40 and the clamping assembly 50 simpler and more convenient to disassemble and assemble.

[0116] As shown in Figures 18 to 22 In one embodiment of the present application, the elastic sheet 1533 is provided with a pressing plate 1534 extending away from the connecting part 1531, and the pressing plate 1534 is configured to drive the elastic sheet 1533 to deform.

[0117] When the first mounting plate 151 needs to be disassembled, an action is applied to the pressing plate 1534, the pressing plate 1534 drives the elastic sheet 1533 to deform, so that the elastic sheet 1533 moves out of the clamping groove 142, and then the pressing plate 1534 is separated from the mounting shell 14, and the first mounting plate 151 is taken out in a direction perpendicular to the mounting assembly 15.

[0118] As shown in Figure 2 and Figure 3 , Figure 11 and Figure 12 , Figure 16 and Figure 17 , Figure 24 and Figure 25 , Figure 27 and Figure 28 In one embodiment of the present application, the mounting rack body 10 is further provided with a limiting sliding groove 18, and the gear assembly 30 is provided with a limiting sliding block 37, and the limiting sliding block 37 is arranged in the limiting sliding groove 18. The limiting sliding block 37 can be a structure extending from the shaft core of the gear 31.

[0119] The above structure plays a limiting and guiding role on the gear assembly 30, avoids the gear assembly 30 from being detached from the arc-shaped groove 12, thereby ensuring the stability of the operation of the gear assembly 30, and improving the use reliability of the product.

[0120] The following will be specifically described with reference to the accompanying drawings.

[0121] Embodiment one

[0122] As shown in Figures 1 to 4 The control device 40 comprises a first rotating wheel 411, a transmission belt 412, a tensioning assembly 413 and a first control cable 414.

[0123] The first rotating wheel 411 is rotatably arranged on the mounting rack body 10.

[0124] The transmission belt 412 is sleeved on the first rotating wheel 411 and the gear assembly 30, respectively.

[0125] The tensioning assembly 413 is rotatably connected with the first rotating wheel 411 and abuts against the transmission belt 412.

[0126] The first control cord 414 is wound on the first rotating wheel 411, and the first control cord 414 is configured to be able to drive the first rotating wheel 411 to rotate in two opposite directions.

[0127] The operator drags the first control cord 414, the first control cord 414 drives the first rotating wheel 411 to rotate, the first rotating wheel 411 drives the transmission belt 412 to move, the transmission belt 412 drives the transmission gear 31 to rotate, the transmission gear 31 meshes with the meshing teeth 13, so that the transmission gear 31 moves along the circumferential direction of the arc-shaped slot 12 to drive the clamping assembly 50 to move, in the process that the transmission gear 31 moves along the circumferential direction of the arc-shaped slot 12, the tensioning assembly 413 rotates relative to the first rotating wheel 411 and always abuts against the transmission belt 412, so as to ensure that the transmission belt 412 is always in a tensioned state, thereby effectively transmitting power between the first rotating wheel 411 and the gear assembly 30.

[0128] The transmission mode of the transmission belt has the advantages of stable transmission, high transmission efficiency and good reliability, so as to effectively transmit power between the first rotating wheel 411 and the gear assembly 30, thereby being able to more accurately and stably control the movement of the arc-shaped suture needle 20, so that the arc-shaped suture needle 20 has sufficient puncture force to enable the arc-shaped suture needle 20 to quickly and effectively penetrate the human tissue, thereby improving the suture efficiency and implementation reliability of the product.

[0129] As shown in the drawings, in an embodiment of the present application, the tensioning assembly 413 comprises a connecting arm 4131, a tensioning wheel 4132 and an elastic member 4133. Figure 4

[0130] One end of the connecting arm 4131 is rotatably connected with the first rotating wheel 411.

[0131] The tensioning wheel 4132 is arranged at the other end of the connecting arm 4131 and abuts against the transmission belt 412.

[0132] The elastic member 4133 is arranged between the connecting arm 4131 and the mounting frame body 10.

[0133] ​During the movement of the transmission gear 31 along the circumference of the arc-shaped slot 12, the elastic member 4133 has elastic force, so that the connecting arm 4131 rotates with the tensioner 4132 relative to the first rotating wheel 411, so that the tensioner 4132 is always pressed on the transmission belt 412, so as to ensure that the transmission belt 412 is always in a tensioned state, thereby effectively transmitting power between the first rotating wheel 411 and the gear assembly 30, so as to more accurately and stably control the movement of the arc-shaped suture needle 20, so that the arc-shaped suture needle 20 has sufficient puncture force to enable the arc-shaped suture needle 20 to quickly and effectively penetrate the human tissue, thereby improving the suture efficiency and implementation reliability of the product.

[0134] Embodiment two

[0135] As shown in Figures 10 to 12 , Figures 15 to 17 , the control device 40 comprises two steering wheels 421 and a second control cable 422.

[0136] The two steering wheels 421 are rotatably arranged on the mounting frame body 10, and the two steering wheels 421 are arranged near the two ends of the arc-shaped slot 12, respectively.

[0137] The second control cable 422 is wound on the gear assembly 30, and the second control cable 422 is configured to be able to drive the transmission gear 31 to rotate in two opposite directions.

[0138] The control device 40 is arranged in the accommodating cavity of the mounting frame body 10, and the accommodating cavity is provided with a limiting piece 423 between the suture slot 11, and the second control cable 422 between the steering wheel 421 and the gear can be pressed on the limiting piece 423.

[0139] The operator pulls the second control cable 422, and since the second control cable 422 is connected with the gear assembly 30 directly after being turned by the steering wheel 421, the second control cable 422 can directly drive the transmission gear 31 to rotate, and the transmission gear 31 is engaged with the meshing teeth 13, so that the transmission gear 31 moves along the circumference of the arc-shaped slot 12 to drive the clamping assembly 50 to move. The structure of the above-mentioned control device 40 is simple and the driving reliability is high, the acting force of the second control cable 422 can directly act on the transmission gear 31, so that the arc-shaped suture needle 20 has sufficient puncture force, and the arc-shaped suture needle 20 can quickly and effectively penetrate the human tissue, thereby improving the suture efficiency and implementation reliability of the product. During the movement of the second control cable 422, the limiting piece 423 can always limit the second control cable 422 in the accommodating cavity, thereby avoiding the influence of the second control cable 422 entering the suture slot 11 on the movement of the arc-shaped suture needle 20, thereby ensuring the effective suture of the arc-shaped suture needle 20 on the human tissue.

[0140] As shown in Figures 10 to 12 , Figures 15 to 17As shown, in one embodiment of this application, the limiting member 423 is a roller (e.g., Figures 15 to 17 (as shown) or baffle (such as) Figures 10 to 12 ).

[0141] The rollers and the second control cable 422 experience rolling friction, which reduces the wear rate of the second control cable 422 during use and extends its service life. Simultaneously, the rollers improve the smoothness of the second control cable 422's movement. The baffle can be manufactured integrally with the mounting frame 10, reducing the need for separate installation of the limiting component 423 and improving product assembly efficiency.

[0142] like Figures 10 to 12 , Figures 15 to 17 As shown, in one embodiment of this application, the control device 40 further includes a guide wheel 424.

[0143] The guide wheel 424 is rotatably mounted on the mounting frame 10. The guide wheel 424 is connected to the second control cable 422. The guide wheel 424 is configured to guide the second control cable 422 after it has been turned by the steering wheel 421.

[0144] The guide wheel 424 guides the second control cable 422 so that the second control cable 422 extends out of the mounting shell 14 from the set direction. In addition, the guide wheel 424 and the second control cable 422 have rolling friction, which reduces the wear rate of the second control cable 422 during use and extends the service life of the second control cable 422.

[0145] Example 3

[0146] like Figures 23 to 25 As shown, the gear assembly 30 has a first annular groove 33 and a second annular groove 34 arranged side by side.

[0147] The control device 40 includes: a second rotating wheel 431, a first control line 432, and a second control line 433.

[0148] The second rotating wheel 431 is rotatably mounted on the mounting frame 10. The second rotating wheel 431 is provided with a first rotating wheel groove 434 and a second rotating wheel groove 435. The position of the first rotating wheel groove 434 corresponds to the position of the first annular groove 33, and the position of the second rotating wheel groove 435 corresponds to the position of the second annular groove 34.

[0149] One end of the first control line 432 is coiled inside the first annular groove 33, and the other end of the first control line 432 is coiled around the first rotary groove 434 and extends out of the mounting frame 10. The first control line 432 is then equipped with...

[0150] The transmission gear 31 is configured to rotate in the first rotation direction. Simultaneously, since the transmission gear 31 meshes with the meshing teeth 13, it moves circumferentially along the arc-shaped groove 12. One end of the second control line 433 is coiled within the second annular groove 34, and the other end is coiled around the second wheel groove 435 and extends out of the mounting frame 10. The second control line 433 is configured to control the transmission gear 31 to rotate in a second rotation direction opposite to the first rotation direction. The arrangement of the second wheel 431 facilitates the transmission of driving force to the transmission gear 31 via the first control line 432 and the second control line 433.

[0151] The operator drags the first control line 432, which drives the second rotating wheel 431 to rotate. The second rotating wheel 431, through the first control line 432, drives the transmission gear 31 to rotate in the first rotation direction. During this process, the second control line 433 is coiled in the second annular groove 34 and the second rotating wheel groove 435 respectively. At the same time, the transmission gear 31 meshes with the meshing teeth 13, so that the transmission gear 31 moves along the circumference of the arc groove 12 in the first direction to drive the snap-fit ​​assembly 50 to move. Conversely, when the operator drags the second control line 433, the second control line 433 drives the second rotating wheel 431 to rotate. 431 drives the transmission gear 31 to rotate in the second rotation direction via the second control line 433. During this process, the first control line 432 is coiled around the first annular groove 33 and the first rotating wheel groove 434 respectively. At the same time, the transmission gear 31 moves along the second direction along the circumference of the arc groove 12 to drive the snap-fit ​​assembly 50 to move. The control device 40 has a compact structure and high transmission efficiency, which can drive the transmission gear 31 to rotate more accurately and stably, so that the arc suture needle 20 has sufficient puncture force, so that the arc suture needle 20 can quickly and effectively penetrate human tissue, thereby improving the suturing efficiency and implementation reliability of the product.

[0152] Example 4

[0153] like Figures 26 to 28 Figures 18 to 22 Figures 18 to 22 Figures 18 to 22 Figure 2 Figure 3 Figure 11 Figure 12 Figure 16 Figure 17 Figure 24 Figure 25 Figure 27 Figure 28 Figures 1 to 4 Figure 4 Figures 10 to 12 Figures 15 to 17 Figures 10 to 12 Figures 15 to 17 Figures 15 to 17 Figures 10 to 12 Figures 10 to 12 Figures 15 to 17 Figures 23 to 25 Figures 26 to 28 Figures 18 to 22 Figures 18 to 22 Figures 18 to 22 Figure 2 Figure 3 Figure 11 Figure 12 Figure 16 Figure 17 Figure 24 Figure 25 As shown, the gear assembly 30 has a third annular groove 35 and a fourth annular groove 36 arranged side by side.

[0154] The control device 40 includes a third control line 441 and a fourth control line 442.

[0155] The third control line 441 is coiled inside the third annular groove 35, and the third control line 441 is configured to control the transmission gear 31 to rotate along the first rotation direction.

[0156] The fourth control line 442 is wound inside the fourth annular groove 36. The fourth control line 442 is configured to control the transmission gear 31 to rotate in a second rotation direction opposite to the first rotation direction.

[0157] The operator drags the first control line 432, and the third control line 441 drives the transmission gear 31 to rotate in the first rotation direction. During this process, the fourth control line 442 is coiled in the fourth annular groove 36. At the same time, the transmission gear 31 meshes with the meshing teeth 13, so that the transmission gear 31 moves along the circumference of the arc groove 12 in the first direction to drive the snap-fit ​​assembly 50 to move. Conversely, the operator drags the fourth control line 442, and the fourth control line 442 drives the transmission gear 31 to rotate in the second rotation direction. During this process, the third control line 441 is coiled in the third annular groove 35. At the same time, the transmission gear 31 moves along the circumference of the arc groove 12 in the second direction to drive the snap-fit ​​assembly 50 to move. The above-mentioned control device 40 has a simple structure and no complex combination structure, which greatly reduces the manufacturing difficulty and cost.

[0158] In the description of this application, it should be noted that the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0159] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. The term "multiple" refers to two or more, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0160] The present application has been described above with reference to preferred embodiments; however, these embodiments are merely exemplary and illustrative. Various substitutions and modifications can be made to the present application based on these embodiments, all of which fall within the protection scope of the present application.

Claims

1. A gear-driven sewing device, characterized in that, The gear-driven sewing device includes: The mounting frame is provided with a suture groove and an arc-shaped groove arranged around the suture groove. Engaging teeth are fixedly provided around the arc-shaped groove. The suture groove is configured to accommodate human tissue. An arc-shaped suture needle is disposed in an arc-shaped needle groove of the mounting frame and is rotatable relative to the mounting frame, and the arc-shaped suture needle can pass through the suture groove; A gear assembly is disposed within the arc-shaped groove, wherein a transmission gear in the gear assembly meshes with the meshing teeth, and the transmission gear is rotatable relative to the mounting frame to allow the gear assembly to move circumferentially within the arc-shaped groove. A control device, disposed within the mounting frame and connected to the gear assembly, is configured to drive the transmission gear to rotate relative to the mounting frame; and A snap-fit ​​assembly is disposed on the gear assembly. The snap-fit ​​assembly includes an elastic support and an interference member. One end of the interference member is connected to the elastic support, and the other end of the interference member can interfere with the arc-shaped suture needle. When the gear assembly drives the snap-fit ​​assembly to rotate in the first direction, the interference member can interfere with the arc-shaped suture needle. When the gear assembly drives the snap-fit ​​assembly to rotate in the second direction, the interference member separates from the arc-shaped suture needle. The first direction is opposite to the second direction.

2. The gear-driven sewing device according to claim 1, characterized in that, The control device includes: a first rotating wheel, which is rotatably mounted on the mounting frame; A transmission belt, which is respectively fitted onto the first rotating wheel and the gear assembly; A tensioning assembly, rotatably connected to the first pulley and pressing against the transmission belt; and A first control cable is wound around the first wheel and is configured to drive the first wheel to rotate in two opposite directions.

3. The gear-driven sewing device according to claim 2, characterized in that, The tensioning assembly includes: a connecting arm, one end of which is rotatably connected to the first rotating wheel; A tensioner pulley, disposed at the other end of the connecting arm and pressing against the drive belt; and An elastic element is disposed between the connecting arm and the mounting frame.

4. The gear-driven sewing device according to claim 1, characterized in that, The control device includes: two steering wheels, which are rotatably mounted on the mounting frame and respectively positioned near both ends of the arc-shaped groove; and A second control cable is wound around the gear assembly and is configured to drive the transmission gear to rotate in two opposite directions. The control device is disposed in the receiving cavity of the mounting frame, and a limiting member is provided between the receiving cavity and the stitching groove. The second control cable between the steering wheel and the gear can press against the limiting member.

5. The gear-driven sewing device according to claim 4, characterized in that, The limiting component is a roller or a baffle.

6. The gear-driven sewing device according to claim 4, characterized in that, The control device further includes a guide wheel, which is rotatably mounted on the mounting frame and connected to the second control cable. The guide wheel is configured to guide the second control cable after it has been turned by the steering wheel.

7. The gear-driven sewing device according to claim 1, characterized in that, The gear assembly has a first annular groove and a second annular groove arranged side by side. The control device includes: a second rotating wheel, which is rotatably mounted on the mounting frame. The second rotating wheel is provided with a first rotating wheel groove and a second rotating wheel groove. The position of the first rotating wheel groove corresponds to the position of the first annular groove, and the position of the second rotating wheel groove corresponds to the position of the second annular groove. A first control line, one end of which is coiled within the first annular groove, and the other end of which is coiled around the first wheel groove and extends out of the mounting frame, the first control line being configured to control the transmission gear to rotate along a first rotation direction; and The second control line has one end coiled in the second annular groove and the other end coiled in the second wheel groove and extending out of the mounting frame. The second control line is configured to control the transmission gear to rotate in a second rotation direction opposite to the first rotation direction.

8. The gear-driven sewing device according to claim 1, characterized in that, The gear assembly has a third annular groove and a fourth annular groove arranged side by side. The control device includes a third control line and a fourth control line; The third control line is wound in the third annular groove, and the third control line is configured to control the transmission gear to rotate along the first rotation direction; The fourth control line is wound inside the fourth annular groove, and the fourth control line is configured to control the transmission gear to rotate in a second rotation direction opposite to the first rotation direction.

9. The gear-driven sewing device according to any one of claims 1 to 8, characterized in that, The mounting frame includes: a mounting shell, wherein the mounting shell is provided with a receiving space; and The mounting assembly is disposed within the receiving space, the stitching groove is located on the mounting assembly, and the gear assembly, the control device, and the snap-fit ​​assembly are disposed on the mounting assembly; The mounting assembly includes a fixing assembly, which includes a first mounting plate and a fixing plate. The first mounting plate is provided with a first pin groove; The fixing plate is provided with a second needle groove, and the first needle groove and the second needle groove form the arc-shaped needle groove; The gear assembly, the control device, and the snap-fit ​​assembly are disposed on the fixed plate or the first mounting plate.

10. The gear-driven sewing device according to claim 9, characterized in that, The mounting assembly further includes a limiting structure that interferes with the first mounting plate.

11. The gear-driven sewing device according to claim 10, characterized in that, The limiting structure includes a connecting part and a stop part. The stop part and the connecting part have an included angle. The limiting structure is generally "L" shaped. The connecting part is connected to the mounting shell, and the stop part abuts against the first mounting plate.

12. The gear-driven sewing device according to claim 11, characterized in that, The two opposite side walls of the accommodating space are provided with snap-fit ​​grooves, and the connecting part is provided with a spring piece, which snaps into the snap-fit ​​groove.

13. The gear-driven sewing device according to claim 12, characterized in that, The spring sheet is provided with a pressing plate, which extends in a direction away from the connecting part, and the pressing plate is configured to drive the spring sheet to deform.

14. The gear-driven sewing device according to claim 9, characterized in that, The mounting assembly also includes a limiting cover plate, and a mounting cavity is provided between the limiting cover plate and the fixing assembly. The gear assembly, the control device and the snap-fit ​​assembly are located in the mounting cavity.

15. The gear-driven sewing device according to any one of claims 1 to 8, characterized in that, The mounting frame includes a second mounting plate, and the arc-shaped groove is disposed on the second mounting plate. The second mounting plate includes a plate body and a rack, and the plate body is provided with the mounting groove. The rack is fixed in the mounting groove and forms the arc-shaped groove with the groove wall of the mounting groove.

16. The gear-driven sewing device according to any one of claims 1 to 8, characterized in that, The gear assembly includes two transmission gears and a connecting rod connecting the two transmission gears; along the axial direction of the connecting rod, the mounting frame is provided with two arc-shaped grooves, and the two transmission gears are respectively disposed in the two arc-shaped grooves; The snap-fit ​​assembly is connected to the connecting rod.

17. The gear-driven sewing device according to any one of claims 1 to 8, characterized in that, The mounting frame includes a third mounting plate, and the arc-shaped pin groove is located on the third mounting plate; the third mounting plate includes a main plate and a cover plate; The motherboard has a first slot; The cover plate is provided with a flange arranged circumferentially along the stitching groove, and the flange extends toward the main board, the cover plate and the flange forming a second groove; The cover plate is placed on the main board, the second groove is connected to the first groove to form the arc-shaped needle groove, and the flange and the groove wall of the sewing groove form the opening of the arc-shaped needle groove.

18. The gear-driven sewing device according to any one of claims 1 to 8, characterized in that, The mounting frame is also provided with a limiting groove, and the gear assembly is provided with a limiting slider, which is disposed in the limiting groove.

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