Connecting rod driven sewing device

Abstract

The utility model provides a connecting rod driven sewing device. The connecting rod driven sewing device comprises a main body, a moving seat, a sewing piece, a transmission plate, a rotating piece, a transmission rod and a driving piece. The rotating piece, the transmission rod and the driving piece are equivalent to levers, the relation between the power arm and the resisting arm is adjusted by reasonably setting the related length between the rotating piece and the transmission rod, and when small force is applied to the transmission rod through the driving piece, the force is transmitted through the rotating piece and the transmission rod to become large force to act on the transmission plate; according to the utility model, the extrusion seat is arranged between the movable seat and the extrusion seat and is transmitted to the movable seat, so that a relatively large extrusion force can be formed between the movable seat and the extrusion seat, and enough puncture and closing force is provided for the suture piece, so that the suture piece can effectively loop ligature / suture lesion mucous membrane tissues, and the lesion mucous membrane tissues can be safely and effectively treated.

Description

Technical Field

[0001] The present application relates to the technical field of endoscopes, and in particular to a connecting rod driven suturing device. Background Art

[0002] In minimally invasive surgery under flexible endoscopes, minimally invasive surgical instruments pass through the working channel of the endoscope to enter the surgical site, or are fixed to the outside of the endoscope to enter the surgical site. During minimally invasive surgery, the operating force at the handle end of the instrument is transmitted to the functional end with the help of a steel wire or a cable. However, the steel wire or cable needs to pass through a long endoscope with certain bending properties, and its force will be attenuated. The above problems will affect the effective implementation of minimally invasive surgical instruments under flexible endoscopes, especially for sutures or staple-type staplers, the attenuation of the driving force will affect the penetration and firmness of the sutured mucosal tissue. Utility Model Content

[0003] To achieve the above-mentioned purpose, the present application provides a connecting rod driven suturing device, which includes: a main body, on which is provided an extrusion seat and a through hole passing therethrough, wherein the through hole is configured to cooperate with an endoscope; a movable seat, which is mounted on the main body and can slide in a straight line relative to the main body, wherein the setting position of the movable seat corresponds to the position of the extrusion seat, and there is a gap between the movable seat and the extrusion seat; a suturing piece, which is arranged in the gap and can be squeezed and deformed by the movable seat and the extrusion seat to suturing the diseased mucosal tissue; a transmission plate, which is provided The main body is disposed on the main body and connected to the moving seat, the transmission plate can slide in a straight line relative to the main body, and the transmission plate is provided with a first meshing tooth; a rotating member, the rotating member is disposed on the main body and can rotate relative to the main body, the rotating member is provided with a second meshing tooth, and the second meshing tooth meshes with the first meshing tooth; a transmission rod, one end of the transmission rod is fixedly connected to the rotating member; and a driving member, the driving member cooperates with the other end of the transmission rod, and the driving member is configured to drive the rotating member to rotate relative to the main body through the transmission rod.

[0004] The connecting rod driven suturing device as described above, wherein the connecting rod driven suturing device further comprises: a reset member, which is arranged between the rotating member and the main body; when the driving member drives the transmission rod and the rotating member to move relative to the main body, the reset member accumulates force.

[0005] The connecting rod driven suturing device as described above, wherein the transmission rod is provided with a first guide member, the driving member is a cable, and one end of the cable is fixedly connected to the main body after passing around the first guide member.

[0006] The connecting rod driven suturing device as described above, wherein a first mounting hole is provided on the transmission rod, and the first mounting hole passes through the transmission rod along the rotation direction of the rotating member; the first guide member is arranged in the first mounting hole and divides the first mounting hole into a first part and a second part; one end of the driving member is fixedly connected to the main body after passing around the first part and the second part.

[0007] The connecting rod driven suturing device as described above, wherein the connecting rod driven suturing device also includes: a guide assembly, which is arranged on the main body, and the guide assembly includes a plurality of second guide members; a plurality of the first guide members are arranged on the transmission rod, and the setting position of a first guide member corresponds to the position of a second guide member; one end of the cable is fixedly connected to the main body after passing around the first guide member and the second guide member in sequence and multiple times.

[0008] The connecting rod driven suturing device as described above, wherein the first guide member and the second guide member are both pulleys.

[0009] In the connecting rod driven suturing device as described above, the rotating member is a sector gear.

[0010] The connecting rod driven suturing device as described above, wherein the transmission rod is located between two straight sides of the sector gear and overlaps with the sector gear.

[0011] In the connecting rod driven suturing device as described above, the transmission rod and the rotating member are an integrated structure.

[0012] In the connecting rod driven suturing device as described above, the connection point between the transmission rod and the rotating member is located at the rotation axis of the rotating member.

[0013] The connecting rod driven suturing device as described above, wherein the movable seat is provided with a fixing hole penetrating the movable seat along the moving direction of the movable seat, and a needle pushing member is provided on the hole wall of the fixing hole; the suturing member comprises: a fixing frame, part of the fixing frame is located in the fixing hole and can slide relative to the movable seat, and the other part of the fixing frame is located in the interval, the fixing frame is provided with a needle outlet, and the setting position of the needle pushing member corresponds to the position of the needle outlet; a first elastic member, the first elastic member is provided between the fixing frame and the movable seat; and a suturing nail, the suturing nail is provided on the fixing frame and is located between the needle outlet and the needle pushing member, the suturing nail comprises a mounting portion and a first puncture portion provided on the mounting portion, and the first puncture portion can be squeezed and deformed by the squeezing seat.

[0014] The connecting rod driven suturing device as described above, wherein the number of the suturing staples is multiple, and the multiple suturing staples are stacked to form a suturing staple group; the suturing member also includes: a needle box, the needle box is arranged on the fixing frame, the needle box has an open accommodating cavity at one end, the setting position of the needle box corresponds to the position of the fixing hole, the suturing staple group is arranged in the accommodating cavity, the suturing staple farthest from the bottom wall of the accommodating cavity among the multiple suturing staples is located between the needle outlet and the needle pushing member, and the bottom wall of the accommodating cavity refers to: the cavity wall of the accommodating cavity arranged opposite to the opening; and a second elastic member, the second elastic member is supported between the suturing staple group and the bottom wall.

[0015] The connecting rod driven suturing device as described above, wherein the suturing piece includes: a suturing belt, wherein both sides of the suturing belt have connecting areas, wherein a one-way clamping structure is arranged in the connecting area; a locking belt, wherein both ends of the locking belt are respectively provided with second mounting holes, wherein both ends of the suturing belt pass through two second mounting holes respectively, so that part of the suturing piece is annular; a locking piece, wherein the locking piece is fixed to the locking belt, wherein the locking piece includes a spring sheet, wherein the spring sheet can be clamped with the one-way clamping structure; and a second puncture portion, wherein the second puncture portion is arranged on the inner side surface of the suturing piece.

[0016] The connecting rod driven suturing device as described above, wherein the locking belt includes a first arc segment and a matching portion located at both ends of the first arc segment, the matching portion is provided with a matching hole and a second mounting hole, the two ends of the suturing belt respectively pass through the two second mounting holes and can slide in the second mounting holes, the matching portion extends radially along the second mounting holes and is connected to the second mounting holes; the locking piece is fixed on the first arc segment, and the spring sheet is located at the end of the first arc segment and in the matching hole.

[0017] The connecting rod driven suturing device as described above, wherein a cutout is provided on the outer surface of the matching portion away from the locking member, the cutout is connected to the second mounting hole, the cutout extends along the axial direction of the second mounting hole and passes through the matching portion, a portion of the suture belt protrudes from the cutout or a portion of the suture belt located in the cutout is flush with the outer surface of the matching portion and contacts with the wall surface of the movable seat.

[0018] The connecting rod driven suturing device as described above, wherein the suturing belt includes a second arc segment and straight segments located at both ends of the second arc segment, and the connecting area is arranged on the straight segment; in the width direction of the straight segment, the cross-sectional shape of the straight segment is a polygon, and the shape of the second mounting hole is adapted to the shape of the straight segment.

[0019] The connecting rod driven suturing device as described above, wherein the connecting rod driven suturing device also includes: a treatment coil, the treatment coil is arranged in the through hole, and the treatment coil is configured to be able to be wrapped around the diseased mucosal tissue; a push-pull member, one end of the push-pull member is connected to the treatment coil, and the other end of the push-pull member passes through the main body; and a push tube, the push tube is sleeved on the push-pull member, and the push-pull member extends out of the push tube.

[0020] Compared with the prior art, the above technical solution has the following advantages:

[0021] After the connecting rod drives the suturing device to extend into the human body, the diseased mucosal tissue is sucked or pulled into the main body, so that the diseased mucosal tissue passes through the suture piece; then the operating driving member controls the rotating member to rotate relative to the main body through the transmission rod, and the rotating member drives the transmission plate to move through the cooperation of the first meshing tooth and the second meshing tooth, and the transmission plate drives the extrusion seat to move to change the distance between the moving seat and the extrusion seat. In this process, the moving seat and the extrusion seat jointly squeeze the suture piece, so that the suture piece is ligated / sutured on the root of the diseased mucosal tissue to suture the diseased mucosal tissue; the rotating member, the transmission rod and the driving member are equivalent to a lever, and the relationship between the power arm and the resistance arm is adjusted by reasonably setting the relevant length between the rotating member and the transmission rod, so that when a small force is applied to the transmission rod through the driving member, the force can be transmitted through the rotating member and the transmission rod to become a large force acting on the transmission plate and transmitted to the moving seat, so that there can be a large extrusion force between the moving seat and the extrusion seat, providing the suture piece with a sufficiently large puncture and closing force, so as to ensure that the suture piece effectively ligates / sutures the diseased mucosal tissue, thereby ensuring safe and effective treatment of the diseased mucosal tissue. In addition, during the above-mentioned suturing process, since the extrusion seat moves in a straight line, the force applied to the suture piece is always in one direction, which ensures that the suture piece moves in translation without lateral displacement, so that the suturing position of the suture piece remains unchanged, so that the suture piece can accurately suture the diseased mucosal tissue, ensuring the suturing, strength and precision of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The following drawings are only intended to illustrate and explain the present application, and do not limit the scope of the present application.

[0023] Figure 1 is a schematic structural diagram of the connecting rod driven suturing device described in the present application;

[0024] Figure 2 yes Figure 1 A schematic diagram of the partial structure of the first embodiment of the connecting rod driven suturing device shown;

[0025] Figure 3 yes Figure 1 The schematic diagram of the exploded structure of the first embodiment of the connecting rod driven suturing device shown;

[0026] Figure 4 yes Figure 2 A schematic diagram of a partial cross-sectional structure of the structure shown;

[0027] Figure 5 yes Figure 4 A schematic diagram of the enlarged structure of the middle part A;

[0028] Figure 6 yes Figure 2 A schematic diagram of the structure in another state;

[0029] Figure 7 yes Figure 6 A schematic diagram of a partial cross-sectional structure of the structure shown;

[0030] Figure 8 yes Figure 1 The schematic diagram of the exploded structure of the second embodiment of the connecting rod driven suturing device shown;

[0031] Fig. 9 yes Figure 1 A partial structural schematic diagram of a third embodiment of a connecting rod driven suturing device is shown;

[0032] Fig.10 yes Figure 1 The schematic diagram of the exploded structure of the third embodiment of the connecting rod driven suturing device shown;

[0033] Fig.11 It is a schematic diagram of the structure of the cooperation between the rotating member, the transmission rod and the first guide member;

[0034] Fig.12 yes Fig. 9 A schematic diagram of the structure in another state;

[0035] Fig.13 yes Figure 1 A partial structural schematic diagram of a fourth embodiment of a connecting rod driven suturing device is shown;

[0036] Fig.14 yes Figure 1 The schematic diagram of the exploded structure of the fourth embodiment of the connecting rod driven suturing device shown;

[0037] Fig.15 yes Fig.14 A schematic diagram of a local structure of the structure shown;

[0038] Fig.16 yes Figure 1 A structural schematic diagram of another perspective of the structure shown;

[0039] Fig.17 yes Figure 3 Schematic diagram of the exploded structure of the stitching piece shown in;

[0040] Fig.18 yes Fig.17 A schematic diagram of a partial cross-sectional structure of the structure shown;

[0041] Fig.19 yes Fig.17 a schematic diagram of the exploded structure of the structure shown;

[0042] Fig. 20 is a schematic structural diagram of another embodiment of the connecting rod driven suturing device described in the present application;

[0043] Fig.21 yes Fig. 20 The schematic diagram of the exploded structure of the first embodiment of the connecting rod driven suturing device shown;

[0044] Fig. 22 yes Fig. 20 A schematic diagram of a partial cross-sectional structure of the structure shown;

[0045] Fig.23 is a structural schematic diagram of another embodiment of the suture piece described in the present application;

[0046] Fig.24 is a structural schematic diagram of another embodiment of the suture piece described in the present application;

[0047] Fig.25 yes Fig.24 A schematic diagram of the structure of the stitching piece and the main body;

[0048] Fig.26 yes Fig. 20 The schematic diagram of the exploded structure of the second embodiment of the connecting rod driven suturing device shown;

[0049] Fig. 27 yes Fig. 20 The schematic diagram of the exploded structure of the third embodiment of the connecting rod driven suturing device shown;

[0050] Fig.28 yes Fig. 20 The schematic diagram of the exploded structure of the fourth embodiment of the connecting rod driven suturing device is shown.

[0051] Description of Figure Numbers:

[0052] 10. Main body; 11. Through hole; 12. Extrusion seat; 13. First limiting structure;

[0053] 20. Moving seat; 21. Fixing hole; 22. Push needle member; 23. Second limiting structure;

[0054] 30. Suturing piece; 31. Fixing frame; 311. Needle outlet; 32. First elastic piece; 33. Suturing nail; 331. Mounting part; 332. First puncture part; 34. Needle box; 35. Second elastic piece; 36. Suturing belt; 361. Connecting area; 362. One-way clamping structure; 363. Second arc segment; 364. Straight segment; 37. Locking belt; 371. First arc segment; 372. Matching part; 373. Second mounting hole; 374. Matching hole; 375. Incision; 38. Locking piece; 381. Shrapnel; 39. Puncture part;

[0055] 40. Transmission plate;

[0056] 51. Rotating member; 52. Transmission rod; 521. First mounting hole; 53. Driving member;

[0057] 60. Reset parts;

[0058] 70. A first guide member;

[0059] 80. guide assembly; 81. second guide member; 82. mounting frame;

[0060] 91. Treatment coil; 92. Push-pull member; 93. Push tube;

[0061] 100. Endoscope. DETAILED DESCRIPTION

[0062] The present application is further described in detail below through the accompanying drawings and embodiments. Through these descriptions, the characteristics and advantages of the present application will become clearer and more specific.

[0063] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise noted.

[0064] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other. The following discussion provides multiple 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, so the present application can also be considered to include all possible combinations of the same and / or different embodiments recorded. Therefore, if one embodiment includes A, B, C, and another embodiment includes a combination of B and D, then the present application should also be considered to include an embodiment containing one or more of all other possible combinations of A, B, C, D, although the embodiment may not be clearly recorded in the following text. In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0065] like Figures 1 to 7 , Fig.21 As shown, the connecting rod driven suturing device provided in the present application includes: a main body 10, a movable seat 20, a suturing member 30, a transmission plate 40, a rotating member 51, a transmission rod 52 and a driving member 53.

[0066] The main body 10 is provided with an extrusion seat 12 and a through hole 11 penetrating therethrough, and the through hole 11 is configured to cooperate with the endoscope 100 .

[0067] The moving seat 20 is installed on the main body 10 and can slide along a straight line relative to the main body 10 . The setting position of the moving seat 20 corresponds to the position of the pressing seat 12 , and there is a gap between the moving seat 20 and the pressing seat 12 .

[0068] The suture piece 30 is disposed in the interval and can be squeezed and deformed by the moving seat 20 and the squeezing seat 12 to suture the diseased mucosal tissue.

[0069] The transmission plate 40 is disposed on the main body 10 and connected to the moving seat 20 . The transmission plate 40 can slide along a straight line relative to the main body 10 , and a first meshing tooth is disposed on the transmission plate 40 .

[0070] The rotating member 51 is disposed on the main body 10 and can rotate relative to the main body 10 . The rotating member 51 is provided with second meshing teeth, and the second meshing teeth mesh with the first meshing teeth.

[0071] One end of the transmission rod 52 is fixedly connected to the rotating member 51 .

[0072] The driving member 53 cooperates with the other end of the transmission rod 52 , and the driving member 53 is configured to drive the rotating member 51 to rotate relative to the main body 10 through the transmission rod 52 .

[0073] In the connecting rod driven suturing device provided by the present application, the rotating member 51, the transmission rod 52 and the driving member 53 are equivalent to levers. By reasonably setting the relative length between the rotating member 51 and the transmission rod 52, the relationship between the power arm and the resistance arm can be adjusted, so that when a small force is applied to the transmission rod 52 by the driving member 53, the force can be transmitted through the rotating member 51 and the transmission rod 52 to become a large force acting on the transmission plate 40 and transmitted to the movable seat 20, so that there can be a large extrusion force between the movable seat 20 and the extrusion seat 12, providing sufficient puncture force and closing force for the suture member 30, especially when the suture member 30 is blocked by ligating / suturing a harder diseased mucosal tissue, the movable seat 20 can provide a large enough force to provide the suture member 30 with a large enough puncture and closing force, so that the suture member 30 is firmly ligated / sutured at the root of the diseased mucosal tissue, so as to ensure the effective ligation / suturing of the diseased mucosal tissue by the suture member 30, thereby ensuring safe and effective treatment of the diseased mucosal tissue.

[0074] In addition, during the above-mentioned suturing process, since the extrusion seat 12 moves in a straight line, the force applied to the suture piece 30 is always in one direction, which ensures that the suture piece 30 moves in translation without lateral displacement, so that the suturing position of the suture piece 30 remains unchanged, so that the suture piece 30 can accurately suture the diseased mucosal tissue, thereby ensuring the suturing, strength and precision of the product.

[0075] The specific operation of the connecting rod driven suturing device is as follows:

[0076] In the first step, the sewing piece 30 is placed in the gap between the moving seat 20 and the pressing seat 12, and the sewing piece 30 is matched with the moving seat 20 and the pressing seat 12 respectively.

[0077] In the second step, the connecting rod driven suturing device is mounted on the front end of the endoscope 100, and then the connecting rod driven suturing device is introduced into the surgical operation site in the human body together with the endoscope 100.

[0078] The third step is Figures 2 to 7 As shown, the front end of the connecting rod driven suturing device is aligned with the diseased mucosal tissue, and the diseased mucosal tissue is clamped by existing technologies such as endoscopic clamps or endoscopic forceps, and pulled into the through hole 11 of the main body 10, so that the diseased mucosal tissue passes through the suture piece 30; then the driving member 53 is operated to control the rotating member 51 to rotate relative to the main body 10 through the transmission rod 52, and the rotating member 51 drives the transmission plate 40 to move through the cooperation of the first meshing teeth and the second meshing teeth, and the transmission plate 40 drives the extrusion seat 12 to move to change the distance between the moving seat 20 and the extrusion seat 12. In this process, the moving seat 20 and the extrusion seat 12 jointly squeeze the suture piece 30, so that the suture piece 30 is ligated / sutured on the root of the diseased mucosal tissue to suture the diseased mucosal tissue.

[0079] like Figure 8 and Fig.26 As shown, in one embodiment of the present application, the connecting rod driven suturing device further includes: a reset member 60.

[0080] The restoring member 60 is disposed between the rotating member 51 and the main body 10 .

[0081] When the driving member 53 drives the transmission rod 52 and the rotating member 51 to move relative to the main body 10 , the resetting member 60 accumulates force.

[0082] During the rotation of the rotating member 51, the rotational force of the rotating member 51 acts on the resetting member 60, causing the resetting member 60 to gradually accumulate force. When the moving seat 20 and the extrusion seat 12 ligate / suture the suture member 30 on the root of the diseased mucosal tissue; a reaction force is applied to the driving member 53 or the external force is removed, and the resetting member 60 applies a reaction force to the rotating member 51, making it easier for the rotating member 51 to return to the initial state position, so as to restart the operation of the connecting rod to drive the suturing device.

[0083] like Figures 9 to 12 , Fig. 27 As shown, in one embodiment of the present application, the transmission rod 52 has a first guide member 70 , and the driving member 53 is a cable. One end of the cable passes around the first guide member 70 and is fixedly connected to the main body 10 .

[0084] One end of the cable is fixedly connected to the main body 10. During the process of dragging the cable, the first guide member 70 moves with the transmission rod 52, and the cable slides relative to the first guide member 70 during the above process; therefore, the first guide member 70 is equivalent to a movable pulley, and the first guide member 70 can be regarded as a labor-saving lever. The force exerted by the transmission rod 52 on the first guide member 70 is resistance, and the force exerted by the cable on the first guide member 70 is power, so that when a small force is applied to the driving member 53, the force can be converted into a larger force acting on the transmission rod 52 through the action of the first guide member 70, and transmitted to the movable seat 20, so that there can be a larger extrusion force between the movable seat 20 and the extrusion seat 12, especially when the suture member 30 is blocked by ligating / suturing a harder diseased mucosal tissue, the movable seat 20 can provide a sufficiently large force to provide the suture member 30 with a sufficiently large puncture and closing force, so that the suture member 30 is firmly ligated / sutured at the root of the diseased mucosal tissue to ensure that the suture member 30 effectively ligates / sutures the diseased mucosal tissue.

[0085] like Fig.11 As shown, in one embodiment of the present application, a first mounting hole 521 is provided on the transmission rod 52 , and the first mounting hole 521 penetrates the transmission rod 52 along the rotation direction of the rotating member 51 .

[0086] The first guide member 70 is disposed in the first mounting hole 521 and divides the first mounting hole 521 into a first portion and a second portion.

[0087] One end of the driving member 53 is fixedly connected to the main body 10 after passing around the first part and the second part.

[0088] The force applied by the cable to the first guide member 70 is evenly transmitted to the transmission rod 52 through the two surfaces where the first guide member 70 is connected to the transmission rod 52, thereby reducing the risk of unnecessary stress concentration and local overload, reducing the probability of fracture between the first guide member 70 and the transmission rod 52, and improving the overall stability and load-bearing capacity of the product.

[0089] like Figures 13 to 15 , Fig.28 As shown, in one embodiment of the present application, the connecting rod driven suturing device further includes: a guide assembly 80.

[0090] The guide assembly 80 is disposed on the main body 10 , and the guide assembly 80 includes a plurality of second guide members 81 .

[0091] The transmission rod 52 is provided with a plurality of first guide members 70, and the position of the first guide member 70 corresponds to the position of a second guide member 81. The guide assembly 80 further includes a mounting frame 82, which serves to limit the position of the cable, thereby preventing the cable from being separated from the guide assembly 80.

[0092] One end of the cable is fixedly connected to the main body 10 after passing through the first guide member 70 and the second guide member 81 in sequence and for multiple times. In another embodiment of the present application, the cable can also be fixedly connected to the second guide member 81. The first guide member 70 is equivalent to a movable pulley group, and the second guide member 81 is equivalent to a fixed pulley group.

[0093] One end of the cable is fixedly connected to the main body 10. During the process of dragging the cable, the second guide member 81 will not be displaced relative to the main body 10. The cable slides relative to the second guide member 81 and turns through the second guide member 81; therefore, the second guide member 81 is equivalent to a fixed pulley group, and the second guide member 81 and the first guide member 70 constitute a pulley group; the cable passes through the guide assembly 80 and multiple first guide members 70, which can further amplify the force acting on the transmission rod 52 through the cable, so that a larger force acts on the movable seat 20 through the rotating member 51 and the transmission plate 40, so that there can be a larger extrusion force between the movable seat 20 and the extrusion seat 12, especially when the suture member 30 is blocked by ligating / suturing harder diseased mucosal tissue, the movable seat 20 can provide a sufficiently large force to provide the suture member 30 with a sufficiently large puncture and closing force, so that the suture member 30 is firmly ligated / sutured at the root of the diseased mucosal tissue to ensure that the suture member 30 effectively ligates / sutures the diseased mucosal tissue.

[0094] In one embodiment of the present application, the first guide member 70 and the second guide member 81 are both pulleys.

[0095] The above structure makes the friction between the cable and the first guide member 70 and the second guide member 81 rolling friction, which reduces the friction force that the cable needs to overcome during movement, so that the tension applied to the cable can be effectively transmitted to the transmission rod 52. More importantly, the movable pulley has a labor-saving effect. In other words, the same force applied by the operator can be transmitted through the movable pulley, which can amplify the driving force.

[0096] like Figures 1 to 12 As shown, in one embodiment of the present application, the rotating member 51 is a sector gear.

[0097] The sector gear has high space utilization rate, and the shape of the sector gear is relatively small, so the transmission function can be realized in a limited space, thereby improving the space utilization rate of the connecting rod driven suturing device.

[0098] In one embodiment of the present application, the transmission rod 52 is located between two straight sides of the sector gear and overlaps with the sector gear.

[0099] In the axial direction of the sector gear, the above structure allows the sector gear and the transmission rod 52 to overlap, thereby effectively utilizing the axial direction of the sector gear and reducing the occupied space in the radial direction, thereby integrating more functions in a relatively small space and improving space utilization.

[0100] like Fig.11 As shown, in one embodiment of the present application, the transmission rod 52 and the rotating member 51 are an integrated structure.

[0101] The above structural requirements, on the one hand, ensure the strength of the connection between the transmission rod 52 and the rotating member 51, thereby reducing the probability of breakage between the transmission rod 52 and the rotating member 51, and further ensuring the reliability of the product; on the other hand, the transmission rod 52 and the rotating member 51 can be made by an integrated molding process, thereby improving the production efficiency of the product and reducing the production cost of the product.

[0102] like Fig.15 As shown, in one embodiment of the present application, the connection between the transmission rod 52 and the rotating member 51 is located at the rotation axis of the rotating member 51 .

[0103] The connection relationship between the transmission rod 52 and the rotating member 51 is such that the relevant length between the rotating member 51 and the transmission rod 52 is reasonable, that is, the relationship between the power arm and the resistance arm is reasonable, so that when a small force is applied to the transmission rod 52 by the driving member 53, the force can be converted into a larger force acting on the transmission plate 40 through the rotating member 51 and the transmission rod 52, and transmitted to the movable seat 20, so that there can be a larger extrusion force between the movable seat 20 and the extrusion seat 12, providing sufficient puncture and closing force for the suture member 30, especially when the suture member 30 is blocked by ligating a harder diseased mucosal tissue, the movable seat 20 can provide a large enough force to make the suture member 30 firmly ligated / sutured at the root of the diseased mucosal tissue, so as to ensure the effective ligation / suture of the diseased mucosal tissue by the suture member 30.

[0104] like Fig.16 As shown, in one embodiment of the present application, a first limiting structure 13 is provided on the main body 10, and a second limiting structure 23 cooperating with the first limiting structure 13 is provided on the movable seat 20. Specifically, one of the first limiting structure 13 and the second limiting structure 23 is a limiting groove, and the other is a limiting block. The above is only one embodiment of the first limiting structure 13 and the second limiting structure 23. Those skilled in the art should understand that, in addition to the above embodiment, any structure that can limit the sliding stroke of the movable seat 20 is acceptable, and they are not listed here one by one.

[0105] The configuration of the first limiting structure 13 and the second limiting structure 23 limits the sliding distance of the transmission plate 40, thereby limiting the sliding distance of the moving seat 20, so as to avoid the situation where the first meshing teeth on the transmission plate 40 and the second meshing teeth on the rotating member 51 are disengaged and stuck due to the large movement distance of the moving seat 20, thereby ensuring the accuracy and reliability of the transmission between the transmission plate 40 and the rotating member 51.

[0106] like Fig. 20 and Fig.21 As shown, in one embodiment of the present application, the connecting rod driven suturing device further includes: a treatment coil 91 , a push-pull member 92 and a push tube 93 .

[0107] The treatment coil 91 is disposed in the through hole 11 , and the treatment coil 91 is configured to be able to be wrapped around the diseased mucosal tissue.

[0108] One end of the push-pull member 92 is connected to the treatment coil 91 , and the other end of the push-pull member 92 passes through the main body 10 .

[0109] The push tube 93 is sleeved on the push-pull member 92, and the push-pull member 92 extends out of the push tube.

[0110] After the connecting rod drives the suturing device to extend into the human body, the diseased mucosal tissue is sucked or pulled into the main body 10, so that the diseased mucosal tissue passes through the suture piece 30 and the treatment coil 91 in sequence; then the operating driving member 53 controls the rotating member 51 to rotate relative to the main body 10 through the transmission rod 52, and the rotating member 51 drives the transmission plate 40 to move through the cooperation of the first meshing tooth and the second meshing tooth, and the transmission plate 40 drives the extrusion seat 12 to move to change the distance between the moving seat 20 and the extrusion seat 12. During this process, the moving seat 20 and the extrusion seat 12 jointly extrude the suture piece 30, so that the suture piece 30 is ligated / sutured on the root of the diseased mucosal tissue; then the push-pull member 92 is dragged, and the push-pull member 92 drives the treatment coil 91 to move relative to the push tube 93, and the push tube 93 can be pressed against the treatment coil 91 to tighten and shrink the treatment coil 91, and then the diseased mucosal tissue is removed through the treatment coil 91. During the operation, the suture piece 30 firmly ligates / sutures the root of the diseased mucosal tissue, thereby facilitating the removal of the diseased mucosal tissue by the treatment coil 91. At the same time, the suture piece 30 can firmly suture the wound surface produced by the removal of the diseased mucosal tissue, reducing the occurrence of postoperative complications.

[0111] Several embodiments of the suture piece will be described in detail below with reference to the accompanying drawings.

[0112] Embodiment 1

[0113] like Figures 16 to 19 As shown, the movable seat 20 is provided with a fixing hole 21 penetrating the movable seat 20 along the moving direction thereof, and a pin pushing member 22 is provided on the hole wall of the fixing hole 21 .

[0114] The suture member 30 includes a fixing frame 31 , a first elastic member 32 and a suture staple 33 .

[0115] Part of the fixing frame 31 is located in the fixing hole 21 and can slide relative to the movable seat 20 , and another part of the fixing frame 31 is located in the interval. A needle outlet 311 is provided on the fixing frame 31 , and the setting position of the needle pusher 22 corresponds to the position of the needle outlet 311 .

[0116] The first elastic member 32 is disposed between the fixed frame 31 and the movable base 20. In the process of pushing the suture nail 33 out of the fixed frame 31, the first elastic member 32 is gradually compressed; after the suture nail 33 is completely pushed out and sutured, the reaction force of the first elastic member 32 causes the fixed frame 31 to return to the initial state position.

[0117] The suture staple 33 is disposed on the fixing frame 31 and is located between the needle outlet 311 and the needle pusher 22 . The suture staple 33 includes a mounting portion 331 and a first puncture portion 332 disposed on the mounting portion 331 . The first puncture portion 332 can be deformed by being squeezed by the squeezing seat 12 .

[0118] like Figures 4 to 6 As shown, after the diseased mucosal tissue is sucked or pulled into the main body 10, the fixed frame 31 presses against the diseased mucosal tissue, and then the movable seat 20 is controlled to slide relative to the main body 10, and the movable seat 20 pushes the suture nail 33 out of the fixed frame 31 from the needle outlet 311, and the first puncture part 332 penetrates the diseased mucosal tissue, and the first puncture part 332 abuts against the squeezing seat 12, and then the movable seat 20 continues to push the suture nail 33, so that the first puncture part 332 bends and presses against the diseased mucosal tissue, so that the suture nail 33 tightens the diseased mucosal tissue to ensure effective treatment of the diseased mucosal tissue. The above-mentioned suture piece 30 has a simple structure and is easy to process.

[0119] like Figures 17 to 19 As shown, in one embodiment of the present application, there are multiple suture staples 33, and multiple suture staples 33 are stacked to form a suture staple group.

[0120] The suture piece 30 further includes a needle box 34 and a second elastic piece 35 .

[0121] The needle box 34 is arranged on the fixing frame 31, and the needle box 34 has an open accommodating cavity at one end. The setting position of the needle box 34 corresponds to the position of the fixing hole 21. The suture nail group is arranged in the accommodating cavity. Among the multiple suture nails 33, the suture nail 33 farthest from the bottom wall of the accommodating cavity is located between the needle outlet 311 and the needle pushing member 22. The bottom wall of the accommodating cavity refers to: the cavity wall of the accommodating cavity and the opening.

[0122] The second elastic member 35 is supported between the suture staple group and the bottom wall.

[0123] like Figures 4 to 6 As shown, the operation process of a suture staple 33 being pushed out of the needle box 34 is basically the same as above. After a suture staple 33 is sutured on the diseased mucosal tissue, the distance between the movable seat 20 and the extrusion seat 12 becomes larger, and the needle pusher 22 withdraws from the needle box 34. At the same time, the fixed frame 31 and the needle box 34 are gradually restored under the reaction force of the first elastic member 32. After the needle pusher 22 completely withdraws from the needle box 34, the next suture staple 33 is moved up and located between the needle outlet 311 and the needle pusher 22 under the action of the second elastic member 35. After that, the distance between the movable seat 20 and the extrusion seat 12 is controlled to become smaller, so that the suture staple 33 is pushed out of the fixed frame 31 from the needle outlet 311 and sutured on the diseased mucosal tissue. By analogy, the suture staple 33 is gradually released. The above structure can realize the continuous suturing of the diseased mucosal tissue, reduce the number of times the suture staple 33 is installed, and thus improve the use efficiency of the product.

[0124] Embodiment 2

[0125] like Fig.23 and Fig.24 As shown, in one embodiment of the present application, the suture piece 30 includes: a suture tape 36 , a locking tape 37 , a locking piece 38 and a second puncture portion 39 .

[0126] The two sides of the suture belt 36 are respectively provided with a connection area 361 , and a one-way clamping structure 362 is disposed in the connection area 361 .

[0127] The two ends of the locking belt 37 are respectively provided with second mounting holes 373 , and the two ends of the suture belt 36 pass through the two second mounting holes 373 , so that the part of the suture piece 30 is annular.

[0128] The locking member 38 is fixed on the locking belt 37 . The locking member 38 includes an elastic sheet 381 . The elastic sheet 381 can be engaged with the one-way engaging structure 362 .

[0129] The second puncture portion 39 is provided on the inner side of the suture member 30 .

[0130] The extrusion seat 12 and the mounting portion 331 jointly squeeze the suture piece 30, so that the suture belt 36 and the locking belt 37 move relative to each other, and the ring formed by the suture belt 36 and the locking belt 37 gradually shrinks to tighten the diseased mucosal tissue. In this process, the one-way clamping structure 362 and the spring piece 381 slide relative to each other and are one-way clamped (one-way clamping means that when the suture belt 36 and the locking belt 37 move relative to each other along the locking direction, the one-way clamping structure 362 and the spring piece 381 can slide relative to each other, and the suture belt 36 and the locking belt 37 can slide relative to each other. When the suture belt 36 and the locking belt 37 are subjected to force in the direction opposite to the locking direction, the one-way clamping structure 362 and the spring piece 381 are locked, so that the suture belt 36 and the locking belt 37 cannot be relatively displaced), so that the suture belt 36 and the locking belt 37 are firmly connected together, and the suture belt 36 and the locking belt 37 are prevented from sliding relative to each other so that the ring shape of the suture piece 30 becomes larger, that is, the suture piece 30 is guaranteed to effectively ligate / suture the diseased mucosal tissue, thereby ensuring safe and effective treatment of the diseased mucosal tissue.

[0131] In addition, the suturing effect of the suture piece 30 is reliable. There are multiple one-way clamping structures 362 of the suture belt 36, so that the suture piece 30 is gradually locked in the process of being squeezed and shrunk. Therefore, the suturing effect is little affected by the amount of diseased mucosal tissue sucked or pulled into the through hole 11. This greatly reduces the risk of not being able to lock tightly due to a small amount of mucosal tissue or not being able to lock due to a large amount of mucosal tissue. In addition, the suture piece 30 is provided with a second puncture part 39 to ensure the stability of the suture.

[0132] like Fig.23 As shown, in one embodiment of the present application, the locking belt 37 includes a first arc segment 371 and a matching portion 372 located at both ends of the first arc segment 371, and the matching portion 372 is provided with a matching hole 374 and a second mounting hole 373. The two ends of the suture belt 36 pass through the two second mounting holes 373 respectively and can slide in the second mounting holes 373. The matching hole 374 extends along the radial direction of the second mounting hole 373 and is connected to the second mounting hole 373.

[0133] The locking member 38 is fixed on the first arc segment 371 . The elastic piece 381 is located at the end of the first arc segment 371 and in the matching hole 374 .

[0134] The spring piece 381 is located in the matching hole 374. Even if the matching part 372 wraps the spring piece 381, the above structure makes the matching part 372 have a certain length, increases the contact area between the suture belt 36 and the matching part 372, and enables the matching part 372 to provide more stable support for the suture belt 36, reduces the shaking or deviation of the suture belt 36 in the second mounting hole 373, thereby improving the accuracy and reliability of the movement, and further ensures that the suture belt 36 and the locking belt 37 slide relative to each other and are smooth during the tightening process without tilting or getting stuck, so that the suture piece 30 can suture the mucosal tissue more smoothly.

[0135] like Fig.24 and Fig.25 As shown, in one embodiment of the present application, a cutout 375 is provided on the outer surface of the mating portion 372 away from the locking member 38, the cutout 375 is connected to the second mounting hole 373, the cutout 375 extends axially along the second mounting hole 373 and passes through the mating portion 372, a portion of the suture band 36 protrudes from the cutout 375 or the portion of the suture band 36 located at the cutout 375 is flush with the outer surface of the mating portion 372 and contacts the wall of the movable seat 20.

[0136] During the use of the suture piece 30, the suture belt 36 is fitted with the wall of the movable seat 20 through the incision 375. Since the suture belt 36 needs to move on the main body 10 and the wall of the movable seat 20 is fixed, the wall of the movable seat 20 can play a good limiting role on the suture belt 36, reducing the shaking or deviation of the suture belt 36 in the second mounting hole 373, thereby improving the accuracy and reliability of the movement, and further ensuring that the suture belt 36 and the locking belt 37 slide relative to each other and are smooth during the tightening process without tilting or getting stuck, so that the suture piece 30 can suture the mucosal tissue more smoothly.

[0137] In one embodiment of the present application, the suture belt 36 includes a second arc segment 363 and straight segments 364 located at both ends of the second arc segment 363 , and the connection area 361 is disposed on the straight segment 364 .

[0138] In the width direction of the straight segment 364 , the cross-sectional shape of the straight segment 364 is a polygon, and the shape of the second mounting hole 373 matches the shape of the straight segment 364 .

[0139] The above-mentioned shape requirements for the straight segment 364 and the second mounting hole 373 enable the straight segment 364 to have multiple planar contacts with the matching portion 372, so that the matching portion 372 can provide more contact points and support surfaces for the straight segment 364, so that the matching portion 372 can provide more stable support for the straight segment 364, reduce the shaking or deviation of the straight segment 364 in the second mounting hole 373, thereby improving the accuracy and reliability of the movement, and further ensuring that the straight segment 364 and the locking belt 37 slide relative to each other and are smooth without tilting or getting stuck during the tightening process, so that the suture 30 can suture the mucosal tissue more smoothly.

[0140] Those skilled in the art should understand that the drawings are only intended to more clearly illustrate the solutions of the present application, and the components involved in different implementations of the present application can be combined with each other as long as there is no conflict between them.

[0141] In the description of the present application, it should be noted that the terms “first” and “second” are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0142] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. The term "plurality" refers to two or more, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0143] The present application has been described above in conjunction with preferred embodiments, but these embodiments are only exemplary and serve only as an illustration. On this basis, various replacements and improvements may be made to the present application, all of which fall within the scope of protection of the present application.

Claims

1. A connecting rod driven suturing device, characterized in that: The connecting rod driven suturing device comprises: A main body, wherein the main body is provided with an extrusion seat and a through hole passing therethrough, wherein the through hole is configured to cooperate with an endoscope; A moving seat, the moving seat is installed on the main body and can slide along a straight line relative to the main body, the setting position of the moving seat corresponds to the position of the extrusion seat, and there is a gap between the moving seat and the extrusion seat; A suture piece, which is arranged in the interval and can be squeezed and deformed by the moving seat and the squeezing seat to suture the diseased mucosal tissue; A transmission plate, the transmission plate is arranged on the main body and connected to the moving seat, the transmission plate can slide along a straight line relative to the main body, and the transmission plate is provided with a first meshing tooth; A rotating member, the rotating member is arranged on the main body and can rotate relative to the main body, the rotating member is provided with second meshing teeth, and the second meshing teeth mesh with the first meshing teeth; a transmission rod, one end of which is fixedly connected to the rotating member; and A driving member is matched with the other end of the transmission rod, and the driving member is configured to drive the rotating member to rotate relative to the main body through the transmission rod.

2. The connecting rod driven suturing device according to claim 1, characterized in that: The connecting rod driven suturing device further comprises: a reset member, the reset member being arranged between the rotating member and the main body; When the driving member drives the transmission rod and the rotating member to move relative to the main body, the resetting member accumulates force.

3. The connecting rod driven suturing device according to claim 2, characterized in that: The transmission rod is provided with a first guide member, and the driving member is a cable. One end of the cable is fixedly connected to the main body after passing around the first guide member.

4. The connecting rod driven suturing device according to claim 3, characterized in that: The transmission rod is provided with a first mounting hole, and the first mounting hole penetrates the transmission rod along the rotation direction of the rotating member; The first guide member is disposed in the first mounting hole and divides the first mounting hole into a first part and a second part; One end of the driving member is fixedly connected to the main body after passing around the first part and the second part.

5. The connecting rod driven suturing device according to claim 3, characterized in that: The connecting rod driven suturing device further comprises: a guide assembly, the guide assembly being arranged on the main body, the guide assembly comprising a plurality of second guide members; The transmission rod is provided with a plurality of the first guide members, and a setting position of a first guide member corresponds to a position of a second guide member; One end of the cable is fixedly connected to the main body after passing around the first guide member and the second guide member in sequence and for multiple times.

6. The connecting rod driven suturing device according to claim 5, characterized in that: The first guide member and the second guide member are both pulleys.

7. The connecting rod driven suturing device according to claim 1, characterized in that: The rotating member is a sector gear.

8. The connecting rod driven suturing device according to claim 7, characterized in that: The transmission rod is located between two straight sides of the sector gear and overlaps with the sector gear.

9. The connecting rod driven suturing device according to claim 1, characterized in that: The transmission rod and the rotating member are an integrated structure.

10. The connecting rod driven suturing device according to claim 1, characterized in that: The connection point between the transmission rod and the rotating member is located at the rotation axis of the rotating member.

11. The connecting rod driven suturing device according to claim 1, characterized in that: The movable seat is provided with a fixing hole penetrating the movable seat along the moving direction of the movable seat, and a push pin is provided on the hole wall of the fixing hole; The suturing member comprises: a fixing frame, part of which is located in the fixing hole and can slide relative to the moving seat, and another part of which is located in the interval, a needle outlet is arranged on the fixing frame, and the needle pusher is arranged at a position corresponding to the needle outlet; A first elastic member, the first elastic member is arranged between the fixing frame and the moving seat; and A suturing staple, wherein the suturing staple is arranged on the fixing frame and is located between the needle outlet and the needle pushing member. The suturing staple comprises a mounting portion and a first puncture portion arranged on the mounting portion, and the first puncture portion can be squeezed and deformed by the squeezing seat.

12. The connecting rod driven suturing device according to claim 11, characterized in that: The number of the suture staples is multiple, and multiple suture staples are stacked to form a suture staple group; The suturing piece further comprises: a needle box, the needle box being arranged on the fixing frame, the needle box having an open accommodating cavity at one end, the arrangement position of the needle box corresponding to the position of the fixing hole, the suturing nail group being arranged in the accommodating cavity, the suturing nail farthest from the bottom wall of the accommodating cavity among the plurality of suturing nails being arranged between the needle outlet and the needle pushing piece, the bottom wall of the accommodating cavity being the cavity wall of the accommodating cavity being arranged opposite to the opening; and A second elastic member is supported between the suture staple group and the bottom wall.

13. The connecting rod driven suturing device according to claim 1, characterized in that: The suture piece comprises: a suture belt, wherein both sides of the suture belt are provided with connection areas, and a one-way clamping structure is arranged in the connection area; A locking belt, wherein both ends of the locking belt are respectively provided with second mounting holes, and both ends of the suture belt respectively pass through two of the second mounting holes, so that part of the suture piece is annular; A locking member, the locking member being fixed on the locking belt, the locking member comprising an elastic sheet, and the elastic sheet being capable of being engaged with the one-way engaging structure; and A second puncture portion, wherein the second puncture portion is disposed on an inner side surface of the suture member.

14. The connecting rod driven suturing device according to claim 13, characterized in that: The locking belt comprises a first arc segment and matching parts located at two ends of the first arc segment, the matching parts are provided with matching holes and the second mounting holes, the two ends of the suture belt respectively pass through the two second mounting holes and can slide in the second mounting holes, the matching holes extend along the radial direction of the second mounting holes and are connected with the second mounting holes; The locking member is fixed on the first arc segment, and the elastic sheet is located at the end of the first arc segment and in the matching hole.

15. The connecting rod driven suturing device according to claim 14, characterized in that: A cutout is provided on the outer surface of the matching portion away from the locking member, the cutout is connected to the second mounting hole, the cutout extends along the axial direction of the second mounting hole and passes through the matching portion, part of the suture belt protrudes from the cutout or the part of the suture belt located in the cutout is flush with the outer surface of the matching portion and contacts with the wall surface of the movable seat.

16. The connecting rod driven suturing device according to claim 14, characterized in that: The suture belt includes a second arc segment and straight segments located at both ends of the second arc segment, and the connection area is arranged on the straight segments; In the width direction of the straight line segment, the cross-sectional shape of the straight line segment is a polygon, and the shape of the second mounting hole is adapted to the shape of the straight line segment.

17. The connecting rod driven suturing device according to any one of claims 1 to 16, characterized in that: The connecting rod driven suturing device further comprises: a treatment coil, the treatment coil being arranged in the through hole, the treatment coil being configured to be able to be ligated on the diseased mucosal tissue; a push-pull member, one end of which is connected to the treatment coil and the other end of which passes through the main body; and A push tube is sleeved on the push-pull member, and the push-pull member extends out of the push tube.

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