Endoscope suturing and resection device

Abstract

The utility model provides an endoscope suturing and resection device which can suck or pull lesion mucous membrane tissue into the endoscope suturing and resection device, so that the mucous membrane tissue sequentially penetrates through a suturing piece and a ferrule treatment piece. Then the control rope is operated to drive the extrusion seat to move in the direction close to the mounting part through the driving device, and the extrusion seat and the mounting part jointly extrude the suturing piece to tighten the suturing piece so as to loop the root of the lesion mucous membrane tissue; and then the lesion mucous membrane tissue is cut off through the ferrule treatment piece. In an operation, the suturing piece is used for carrying out firm loop ligature on the root of a lesion mucous membrane tissue, the loop treatment piece can conveniently cut off the lesion mucous membrane tissue, and meanwhile, the suturing piece can be used for firmly closing a wound surface after the lesion mucous membrane tissue is cut off.

Description

TECHNICAL FIELD

[0001] The utility model relates to endoscope technical field, especially endoscope suture resection device. BACKGROUND

[0002] With the development of endoscopic technology, some digestive tract tumors, especially submucosal tumors, can be removed by endoscopic super minimally invasive surgery, which has good surgical effect and causes little damage to patients. At present, the most commonly used endoscopic surgical methods for this type of tumor include endoscopic submucosal dissection and endoscopic full-thickness resection. These two methods have high surgical difficulty, long learning curve and long operation time, and there is a certain probability of intraoperative and postoperative complications, such as bleeding, perforation and infection. In addition, some small submucosal tumors can be removed by endoscopic ligation, but this method cannot obtain tumor tissue for pathological examination. In particular, the ligation method of the prior art is not reliable in the firmness of tumor ligation, and there is a risk of slipping. Once the postoperative ligation slips, it may cause serious complications. SUMMARY

[0003] To achieve the above purpose, the utility model provides an endoscope suture resection device, which comprises a base, a through hole penetrating through the base is arranged on the base, the through hole is configured to cooperate with an endoscope, the base comprises a first end and a second end arranged oppositely, and the first end of the base is provided with a mounting portion; a pressing seat is mounted on the first end of the base and can slide linearly relative to the base, the pressing seat is arranged at a position corresponding to the position of the mounting portion, and there is a gap between the pressing seat and the mounting portion; a suture member is arranged in the gap, the suture member can be tightened by being pressed by the pressing seat and the mounting portion to be ligation on the diseased mucosa; a driving device is connected with the pressing seat, the driving device is configured to drive the pressing seat to slide relative to the base; a control cord is connected with the driving device, the control cord is configured to drive the driving device to move relative to the base; and a loop treatment member is arranged in the through hole, the loop treatment member is configured to be ligation on the mucosa.

[0004] The endoscope suture resection device described above, wherein the suture member comprises a suture belt and a locking belt, the suture belt is provided with a connecting area, and a one-way clamping structure is arranged in the connecting area; the end of the locking belt is provided with a matching space and a matching structure matched with the one-way clamping structure, and the end of the suture belt passes through the matching space so that part of the suture member is annular; a puncture part is arranged on the inner annular surface of the suture member.

[0005] The endoscope suture resection device as described above, wherein the extrusion seat comprises an extrusion part and connecting parts at both ends of the extrusion part; the connecting parts extend along the sliding direction of the extrusion seat; part of the base is located between the two connecting parts, and the connecting parts are connected with the base; a guide accommodation groove is further arranged on the base, and the guide accommodation groove is arranged on the side of the mounting part and along the sliding direction of the extrusion seat; the setting position of the guide accommodation groove corresponds to the position of the end of the suture belt.

[0006] The endoscope suture resection device as described above, wherein the matching structure comprises a connecting part and elastic sheet parts at both ends of the connecting part, and the elastic sheet parts are bent from the ends of the connecting part; the connecting part is attached to the locking belt and fixedly connected with the locking belt, and the elastic sheet can be clamped with the one-way clamping structure.

[0007] The endoscope suture resection device as described above, wherein the matching structure is an elastic lock sheet, and the elastic lock sheet comprises a fixed sheet and a locking sheet connected in sequence; the fixed sheet is connected with the locking belt, and the locking sheet can be clamped with the one-way clamping structure.

[0008] The endoscope suture resection device as described above, wherein a clamping groove is arranged on the locking belt, and the clamping groove is arranged adjacent to the port of the matching space; the matching structure comprises a clamping ring and a lock sheet, the clamping ring is arranged in the clamping groove, and the lock sheet can be clamped with the one-way clamping structure.

[0009] The endoscope suture resection device as described above, wherein the one-way clamping structure is a convex tooth.

[0010] The endoscope suture resection device as described above, wherein two spaced suture parts are arranged, and the two suture parts are arranged on the extrusion seat and the mounting part respectively; a puncture part is arranged on at least one of the suture parts, and locking structures capable of being locked with each other are arranged on the two suture parts respectively.

[0011] The endoscope suture resection device as described above, wherein the extrusion seat comprises an extrusion part and connecting parts at both ends of the extrusion part; the connecting parts extend along the sliding direction of the extrusion seat; part of the base is located between the two connecting parts, and the connecting parts are connected with the base; both ends of the mounting part are in contact with the two connecting parts respectively, and relative sliding between the mounting part and the connecting parts can occur, the extrusion part, the two connecting parts and the mounting part surround a mounting hole, the mounting hole is in communication with the through hole, and the suture member is located in the mounting hole.

[0012] The endoscopic suture resection device as described above, wherein the driving device comprises a transmission plate arranged on the base and capable of sliding relative to the base along the sliding direction of the pressing seat, the transmission plate being provided with engagement teeth; a driving gear arranged on the base and capable of rotating relative to the base, the driving gear being engaged with the engagement teeth; and a driving member arranged on the base and capable of moving relative to the base, the driving member being connected with the driving gear and the control cord respectively.

[0013] The endoscopic suture resection device as described above, wherein the driving member is a first connecting gear, the driving gear is fixed on one side surface of the first connecting gear and coaxial with the first connecting gear, the first connecting gear is provided with a first annular groove, the control cord is wound in the first annular groove and can control the first connecting gear to rotate relative to the base in a first rotation direction or a second rotation direction.

[0014] The endoscopic suture resection device as described above, wherein the driving member comprises a second connecting gear and a matching gear, the matching gear is fixed on one side surface of the second connecting gear and coaxial with the second connecting gear, the driving gear is engaged with the matching gear, the diameter of the driving gear is greater than the diameter of the matching gear, the second connecting gear is provided with a second annular groove, the control cord is wound in the second annular groove and can control the second connecting gear to rotate relative to the base in a first rotation direction or a second rotation direction.

[0015] The endoscopic suture resection device as described above, wherein the driving member is a rack, the rack is engaged with the driving gear.

[0016] The endoscopic suture resection device as described above, wherein the base is provided with a guide frame, the guide frame is provided with a first guide structure, the rack is provided with a second guide structure matched with the first guide structure.

[0017] The endoscopic suture resection device as described above, wherein a clearance corresponding to the transmission plate is arranged between the base and the rack, the transmission plate can be inserted into the clearance.

[0018] The endoscopic suture resection device as described above, wherein the base is provided with a first limiting structure, the pressing seat is provided with a second limiting structure matched with the first limiting structure; or the base is provided with a first limiting structure, the transmission plate is provided with a second limiting structure matched with the first limiting structure.

[0019] The endoscopic suture resection device as described above, wherein one of the first limiting structure and the second limiting structure is a limiting groove, and the other is a limiting block.

[0020] The endoscopic suture resection device as described above, wherein a cross-sectional area of the part of the base located at the first end or a cross-sectional area of the structure formed by the extrusion seat and the part of the base located at the first end is smaller than a cross-sectional area of the part of the base located at the middle; and / or a cross-sectional area of the part of the base located at the second end is smaller than the cross-sectional area of the part of the base located at the middle.

[0021] The endoscopic suture resection device as described above, wherein a distal end of the extrusion seat is in the same plane as a distal end of the mounting portion; the distal end of the extrusion seat refers to an end of the extrusion seat away from the base; and the distal end of the mounting portion refers to an end of the mounting portion away from the base.

[0022] Compared with the prior art, the technical solution has the following advantages:

[0023] After the endoscopic suture resection device is inserted into the human body, the diseased mucosa tissue is sucked into or pulled into the device, so that the diseased mucosa tissue passes through the suture member and the loop therapy member in turn; then the driving device is driven to move by operating the control cord, the extrusion seat is driven by the driving device to move towards the mounting portion, in this process, the extrusion seat and the mounting portion extrude the suture member together to tighten the suture member to ligate the root of the diseased mucosa tissue; then the loop therapy member is used to resect the diseased mucosa tissue; during the operation, the suture member tightly ligates the root of the diseased mucosa tissue, so that the loop therapy member resects the diseased mucosa tissue, and the suture member tightly sutures the wound surface generated by the resection of the diseased mucosa tissue, thereby reducing the postoperative complications. In addition, the endoscopic suture resection device can simultaneously realize the resection of the diseased mucosa tissue and the suturing of the wound surface after the resection, that is, one device can realize two operations of resection and suturing, on the one hand, the number of tools used during the operation is reduced, and the operation difficulty of the resection of the diseased tissue is reduced; on the other hand, the operation is simple, thereby improving the use comfort and efficiency of the product. BRIEF DESCRIPTION OF DRAWINGS

[0024] The following drawings merely aim to schematically illustrate and explain the present application and do not limit the scope of the present application. Among them:

[0025] Figure 1 is a structural schematic view of the first embodiment of the endoscopic suture resection device according to the present application;

[0026] Figure 2 is Figure 1 is an exploded structural schematic view of the endoscopic suture resection device according to the present application;

[0027] Figure 3 is Figure 1 is a side view structural schematic diagram of the endoscopic suturing and resection device shown in

[0028] Figure 4 is Figure 3 is a partial sectional view structural schematic diagram of the endoscopic suturing and resection device shown in

[0029] Figure 5 is Figure 1 is a structural schematic diagram of the endoscopic suturing and resection device in another state shown in

[0030] Figure 6 is Figure 5 is a partial sectional view structural schematic diagram of the endoscopic suturing and resection device shown in

[0031] Figure 7 is a partial structural schematic diagram of the second embodiment of the endoscopic suturing and resection device of the utility model;

[0032] Figure 8 is a partial structural schematic diagram of the third embodiment of the endoscopic suturing and resection device of the utility model;

[0033] Figure 9 is a structural schematic diagram of the first embodiment of the suturing member of the utility model;

[0034] Figure 10 is Figure 9 is a structural schematic diagram of the suturing belt shown in

[0035] Figure 11 is Figure 9 is a structural schematic diagram of the locking belt and the matching structure cooperation shown in

[0036] Figure 12 is Figure 11 is an exploded structural schematic diagram of the structure shown in

[0037] Figure 13 is a structural schematic diagram of the first embodiment of the locking belt and the matching structure cooperation of the utility model;

[0038] Figure 14 is a structural schematic diagram of the second embodiment of the locking belt and the matching structure cooperation of the utility model;

[0039] Figure 15 is a structural schematic diagram of the second embodiment of the suturing member of the utility model and the base cooperation;

[0040] Figure 16 is Figure 15 is a structural schematic diagram of the suturing member in the first state shown in

[0041] Figure 17 is Figure 15 is a structural schematic view of the suture shown in

[0042] Figure 18 is a structural schematic view of the fourth embodiment of the endoscopic suture resection device according to the present application;

[0043] Figure 19 is Figure 18 is a structural schematic view of the driving member shown in

[0044] Figure 20 is Figure 18 is an exploded structural schematic view of the endoscopic suture resection device shown in

[0045] Figure 21 is Figure 18 is a side structural schematic view of the endoscopic suture resection device shown in

[0046] Figure 22 is Figure 21 is a partial cross-sectional structural schematic view of the endoscopic suture resection device shown in

[0047] Figure 23 is Figure 18 is a structural schematic view of the endoscopic suture resection device shown in

[0048] Figure 24 is Figure 23 is a partial cross-sectional structural schematic view of the endoscopic suture resection device shown in

[0049] Figure 25 is a structural schematic view of the fifth embodiment of the endoscopic suture resection device according to the present application;

[0050] Figure 26 is Figure 25 is an exploded structural schematic view of the endoscopic suture resection device shown in

[0051] Figure 27 is Figure 25 is a side structural schematic view of the endoscopic suture resection device shown in

[0052] Figure 28 is Figure 27 is a partial cross-sectional structural schematic view of the endoscopic suture resection device shown in

[0053] Figure 29 is Figure 25 is a structural schematic view of the endoscopic suture resection device shown in

[0054] Figure 30 is Figure 29 is a partial cross-sectional structural schematic view of the endoscopic suture resection device shown in

[0055] BRIEF DESCRIPTION OF DRAWINGS

[0056] 10, base; 11, through hole; 12, first end; 13, second end; 14, mounting portion; 141, second groove; 15, guide clearance; 16, clearance; 17, first limiting structure;

[0057] 20, extrusion seat; 21, extrusion portion; 212, first groove; 22, connecting portion; 23, mounting hole;

[0058] 30, suture member; 31, suture belt; 311, connecting area; 312, one-way clamping structure; 32, locking belt; 321, fitting space; 322, fitting structure; 3221, connecting portion; 3222, elastic sheet portion; 3223, fixing sheet; 3224, locking sheet; 3225, clamping ring; 3226, locking sheet; 323, clamping groove; 33, puncture portion; 34, suture portion; 35, locking structure;

[0059] 40, driving device; 41, transmission plate; 42, driving gear; 43, driving member; 431, first connecting rotating wheel; 432, second connecting rotating wheel; 433, fitting gear; 434, rack; 435, second guide structure;

[0060] 50, control cord;

[0061] 60, collar treatment member; 61, treatment coil; 62, push-pull member; 63, sleeve;

[0062] 70, guide frame; 71, first guide structure;

[0063] 80, second limiting structure;

[0064] 100, endoscope. DETAILED DESCRIPTION

[0065] The utility model will be further explained in detail by the drawings and embodiments. Through these explanations, the characteristics and advantages of the utility model will become more clear and explicit.

[0066] Herein the word "exemplary" is used 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 the depiction of an embodiment in a drawing does not imply a certain orientation of the embodiment in use or operation.

[0067] Moreover, the technical features involved in the different embodiments of the utility model 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 utility model. Although each embodiment represents a single combination of the application, different embodiments of the utility model can be replaced or combined, so the utility model can also be considered to include all possible combinations of the same and / or different embodiments described. Therefore, if one embodiment includes A, B and C, and another embodiment includes a combination of B and D, the utility model should also be considered to include an embodiment containing one or more all other possible combinations of A, B, C and D, although this embodiment may not be explicitly described in the following content. Moreover, the technical features involved in the different embodiments of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0068] As shown in Figures 1 to 30 The utility model provides endoscope stitching and cutting device includes: base 10, extrusion seat 20, stitching 30, drive arrangement 40, control cord 50 and sleeve ring treatment piece 60.

[0069] The base 10 is provided with through hole 11 through it, and the through hole 11 is configured to cooperate with the endoscope 100, and the base 10 includes the first end 12 and the second end 13, and the first end 12 of the base 10 is provided with the mounting portion 14.

[0070] The extrusion seat 20 is installed on the first end 12 of the base 10 and can slide linearly relative to the base 10, and the position of the extrusion seat 20 corresponds to the position of the mounting portion 14, and there is a gap between the extrusion seat 20 and the mounting portion 14. The base 10 is also provided with a structure for preventing the extrusion seat 20 from being removed from the base 10. In the utility model, the linear sliding of the extrusion seat realizes the accuracy of the stitching, in order to realize the linear sliding of the extrusion seat, the corresponding specific structure for realizing the linear sliding is provided on the extrusion seat and the base, and the specific structure can be the cooperation of the sliding groove and the sliding rail / guide rail and the sliding block. Those skilled in the art should understand that structures capable of realizing the linear sliding of the extrusion seat can be used in addition to the above structures, which will not be listed one by one here.

[0071] The stitching 30 is arranged in the gap, and the stitching 30 can be tightened by the extrusion of the extrusion seat 20 and the mounting portion 14 to be laced on the mucosal tissue.

[0072] The drive arrangement 40 is connected with the extrusion seat 20, and the drive arrangement 40 is configured to drive the extrusion seat 20 to slide relative to the base 10.

[0073] The control cord 50 is connected with the drive arrangement 40, and the control cord 50 is configured to drive the drive arrangement 40 to move relative to the base 10.

[0074] The loop therapeutic piece 60 is arranged in the through hole 11, and the loop therapeutic piece 60 is configured to be able to be looped on the mucosa tissue.

[0075] The loop therapeutic piece 60 is similar to an endoscopic snare in the market, mainly comprising a therapeutic loop 61, a push-pull piece 62 and a sleeve 63.

[0076] The therapeutic loop 61 is arranged in the through hole 11, and the therapeutic loop 61 is configured to be able to be looped on the mucosa tissue.

[0077] One end of the push-pull piece 62 is connected with the therapeutic loop 61, and the other end of the push-pull piece 62 is arranged out of the base 10.

[0078] The sleeve 63 is sleeved on the push-pull piece 62 and can move relative to the sleeve 63.

[0079] The endoscopic suturing and resection device provided by the utility model can firmly loop the root of the diseased mucosa tissue through the suturing piece 30 in the operation, so that the therapeutic loop 61 can conveniently resect the diseased mucosa tissue, and the suturing piece 30 can firmly suture the wound surface generated by resecting the diseased mucosa tissue, thereby greatly reducing the complications such as intraoperative and postoperative bleeding and perforation.

[0080] In addition, the endoscopic suturing and resection device can simultaneously realize resection of the diseased tissue and suturing of the wound surface after resection, that is, one device can realize two operations of resection and suturing.

[0081] The specific operation of the endoscopic suturing and resection device is as follows:

[0082] In the first step, the suturing piece 30 is arranged in the interval between the extrusion seat 20 and the mounting portion 14, and the suturing piece 30 is matched with the extrusion seat 20 and the mounting portion 14 respectively.

[0083] In the second step, the endoscopic suturing and resection device is sleeved on the front end of the endoscope 100, and then the endoscopic suturing and resection device is arranged in the operation part of the human body together with the endoscope 100.

[0084] Thirdly, the endoscope suturing and resecting device is pressed against the lesion mucosa, and the distal end of the pressing seat 20 and the distal end of the mounting portion 14 are tightly attached to the mucosa around the lesion mucosa, then the lesion mucosa is sucked by the suction device, and the lesion mucosa is sequentially threaded through the suturing member 30 and the therapeutic coil 61; then the control cord 50 controls the driving device 40 to move the pressing seat 20 towards the mounting portion 14, and the pressing seat 20 and the mounting portion 14 jointly compress the suturing member 30 to tighten the suturing member 30 to ligate the lesion mucosa; the pushing and pulling member 62 is pulled to move the therapeutic coil 61 relative to the sleeve 63, the sleeve 63 can press against the therapeutic coil 61 to make the therapeutic coil 61 smaller, and then the lesion mucosa is resected by the therapeutic coil 61. It should be noted that in addition to the above-mentioned suction method, the endoscopic spiral anchor and the endoscopic forceps of the prior art can also achieve the operation of pulling the lesion mucosa into the through hole 11 to implement the above-mentioned steps.

[0085] As shown in Figure 2 , Figure 20 and Figure 26 , in an example of the present application, the driving device 40 comprises a transmission plate 41, a driving gear 42 and a driving member 43.

[0086] The transmission plate 41 is arranged on the base 10 and can slide relative to the base 10 along the sliding direction of the pressing seat 20, and the transmission plate 41 is provided with meshing teeth.

[0087] The driving gear 42 is arranged on the base 10 and can rotate relative to the base 10, and the driving gear 42 is engaged with the meshing teeth.

[0088] The driving member 43 is arranged on the base 10 and can move relative to the base 10, and the driving member 43 is connected with the driving gear 42 and the control cord 50 respectively.

[0089] After the endoscope suturing and resecting device is inserted into the human body, the control cord 50 drives the driving member 43 to move relative to the base 10, the driving member 43 drives the driving gear 42 to rotate relative to the base 10, the driving gear 42 drives the transmission plate 41 to move relative to the base 10, the transmission plate 41 drives the pressing seat 20 to slide relative to the base 10, and the pressing seat 20 and the mounting portion 14 jointly compress the suturing member 30 to tighten the suturing member 30 to ligate the lesion mucosa, the above-mentioned structure is a gear transmission system, the gear transmission system has accurate transmission, high efficiency, compact structure, reliable work and long service life.

[0090] As shown in Figure 7As shown, in one embodiment of this utility model, a first limiting structure 17 is provided on the base 10, and a second limiting structure 80 that cooperates with the first limiting structure 17 is provided on the extrusion seat 20. Specifically, one of the first limiting structure 17 and the second limiting structure 80 is a limiting groove, and the other is a limiting block. The above is only one embodiment of the first limiting structure 17 and the second limiting structure 80. Those skilled in the art should understand that, in addition to the above embodiment, any structure that can limit the sliding stroke of the extrusion seat 20 is acceptable, and will not be listed here.

[0091] The configuration of the first limiting structure 17 and the second limiting structure 80 restricts the sliding distance of the pressing seat 20, thereby limiting the sliding distance of the transmission plate 41. This avoids the situation where the meshing teeth on the transmission plate 41 disengage from the drive gear 42 and get stuck due to the large movement distance of the transmission plate 41, thus ensuring the accuracy and reliability of the transmission between the transmission plate 41 and the drive gear 42.

[0092] like Figure 8 As shown, in another embodiment of this utility model, a first limiting structure 17 is provided on the base 10, and a second limiting structure 80 that cooperates with the first limiting structure 17 is provided on the transmission plate 41. Specifically, one of the first limiting structure 17 and the second limiting structure 80 is a limiting groove, and the other is a limiting block. The above is only one embodiment of the first limiting structure 17 and the second limiting structure 80. Those skilled in the art should understand that, in addition to the above embodiment, any structure that can limit the sliding stroke of the pressing seat 20 is acceptable, and will not be listed here.

[0093] The configuration of the first limiting structure 17 and the second limiting structure 80 ensures the reliability of the transmission between the transmission plate 41 and the drive gear 42.

[0094] like Figure 1 , Figure 18 and Figure 25 As shown, in one embodiment of this utility model, the cross-sectional area of ​​the portion of the base 10 located at the first end 12, or the cross-sectional area of ​​the structure formed by the compression seat 20 and the portion of the base 10 located at the first end 12, is smaller than the cross-sectional area of ​​the portion of the base 10 located in the middle. For example... Figure 18 and Figure 25 As shown, the cross-sectional area of ​​the portion of the base 10 located at the second end 13 is smaller than the cross-sectional area of ​​the portion of the base 10 located in the middle.

[0095] The structure makes the endoscope suture resection device as a whole in a shape of small front end, small rear end and large middle part, and the front end or the rear end of the endoscope suture resection device is more easily pushed to enter the human body cavity from the hole in the process of inserting or withdrawing the endoscope suture resection device into the human body, so that the endoscope suture resection device is smoothly inserted or withdrawn into the human body, and the use comfort of the product is improved, and meanwhile, the mucosa tissue is prevented from being scratched in the process of inserting or withdrawing the device into the human body cavity.

[0096] As shown in Figure 1 , Figure 18 and Figure 25 , in an embodiment of the present application, the distal end of the extrusion seat 20 and the distal end of the mounting portion 14 are located in the same plane.

[0097] The distal end of the extrusion seat 20 refers to an end of the extrusion seat 20 away from the base 10.

[0098] The distal end of the mounting portion 14 refers to an end of the mounting portion 14 away from the base 10.

[0099] The above structure can make the distal end of the extrusion seat 20 and the distal end of the mounting portion 14 simultaneously press against the diseased mucosa tissue, so that the distal end of the device is tightly attached to the mucosa tissue, the suction force is prevented from leaking when the diseased mucosa tissue is sucked through the endoscope 100, and the diseased mucosa tissue is effectively sucked into the through hole 11.

[0100] It should be noted that, for the method of sucking the diseased mucosa tissue into the through hole 11 through the endoscope 100, in the operation process, the endoscope suture resection device needs to be pressed against the diseased mucosa tissue, so that the distal end of the extrusion seat 20 and the distal end of the mounting portion 14 are tightly attached to the mucosa tissue around the diseased mucosa tissue, forming a nearly closed cavity communicating with the through hole 11, so as to ensure sufficient negative pressure suction force to suck the diseased mucosa tissue. In the present technology, in order to meet this suction effect, the part corresponding to the through hole 11 of the suture member is in a ring-like structure, or the extrusion seat 20, the connecting portion 22 and the mounting portion 14 form a ring-like structure.

[0101] The following will specifically describe several embodiments of the suture member 30 in combination with the drawings.

[0102] Embodiment one

[0103] As shown in Figures 9 to 12 , the suture member 30 includes a suture belt 31 and a locking belt 32.

[0104] The two ends of the suture belt 31 are respectively provided with a connecting area 311, and a one-way clamping structure 312 is arranged in the connecting area 311. Taking the inner side surface of the connecting area 311 of the suture belt 31 as a reference plane, in an embodiment of the present application, as shown in Figure 10As shown, the one-way clamping structure 312 can be a concave tooth lower than the reference plane. In another embodiment of the present application, the one-way clamping structure can be a convex tooth protruding from the reference plane. For a suture band with very small size, the connecting area is relatively thin. The convex tooth is arranged to increase the thickness of the connecting area, which ensures the strength and prevents deformation under stress.

[0105] The end of the locking band 32 is provided with a matching space 321 and a matching structure 322 matched with the one-way clamping structure 312. The end of the suture band 31 passes through the matching space 321, so that part of the suture 30 is annular. In a specific embodiment of the present application, the two ends of the locking band 32 are respectively provided with a matching space 321 and a matching structure 322 matched with the one-way clamping structure 312. The two ends of the suture band 31 pass through the two matching spaces 321, so that the suture 30 is partially annular. In a specific embodiment of the present application, the matching structure 322 can be a barb buckle, a spring piece, an inclined tooth or the like. Those skilled in the art should understand that as long as the matching structure 322 can be locked with the one-way clamping structure 312, it can be used herein without being listed one by one. In addition, due to the small size of the matching structure 322, the matching structure 322 can be an independent spring piece structure. After the matching structure 322 is manufactured, it is assembled to the two ends of the locking band 32, which ensures the clamping effect of the matching structure 322.

[0106] The suture 30 is provided with a puncture part 33 on the inner annular surface. The suture 30 is annular at the part corresponding to the through hole 11. After the endoscopic suture and resection device is pressed against the diseased mucosa, a nearly closed cavity is formed with the through hole 11, which ensures the suction effect.

[0107] The pressing seat 20 and the mounting portion 14 press the suture 30 together to make the suture band 31 and the locking band 32 move relatively, and the annular structure formed by the suture band 31 and the locking band 32 gradually shrinks to tighten the diseased mucosa. In this process, the one-way clamping structure 312 and the matching structure 322 slide relatively and are clamped in one direction (one-way clamping refers to: when the suture band 31 and the locking band 32 move relatively in the locking direction, the one-way clamping structure 312 and the matching structure 322 can slide relatively; when the suture band 31 and the locking band 32 are stressed in the direction opposite to the locking direction, the one-way clamping structure 312 and the matching structure 322 are locked, so that the suture band 31 and the locking band 32 cannot move relatively), so that the suture band 31 and the locking band 32 are firmly connected together, avoiding the situation that the suture band 31 and the locking band 32 slide relatively to make the annular structure of the suture 30 larger, which ensures the effective ligation of the suture 30 to the diseased mucosa, thereby ensuring the safe and effective treatment of the diseased mucosa.

[0108] In addition, the suture piece 30 has reliable suture effect. The one-way clamping structure 312 of the suture belt 31 is multiple, so that the suture piece 30 is gradually locked in stages during the process of being gradually compressed and reduced, and thus the suture effect is little affected by the amount of the lesion mucosa tissue sucked into or pulled into the through hole 11. This greatly reduces the risk of not being locked due to less mucosa tissue or not being locked due to more mucosa tissue. In addition, the suture piece 30 is provided with the puncture part 33, which ensures the stability of the suture.

[0109] As shown in Figure 11 and Figure 12 in an example of the utility model, the locking belt 32 is provided with the clamping groove 323, and the clamping groove 323 is arranged adjacent to the port of the matching space 321.

[0110] The matching structure 322 comprises the clamping ring 3225 and the locking sheet 3226, the clamping ring 3225 is arranged in the clamping groove 323, and the locking sheet 3226 can be clamped with the one-way clamping structure 312.

[0111] The clamping ring 3225 is fixed on the locking belt 32 through the clamping groove 323, that is, the matching structure 322 is clamped with the locking belt 32, on the one hand, the matching structure 322 and the locking belt 32 can be quickly assembled, thereby reducing the assembly difficulty of the product and reducing the production cost of the suture clamp; on the other hand, the reliability of the connection between the matching structure 322 and the locking belt 32 is ensured.

[0112] As shown in Figure 1 and Figure 2 in an example of the utility model, the extrusion seat 20 comprises the extrusion part 21 and the connecting part 22 located at both ends of the extrusion part 21. Specifically, the extrusion part 21 is provided with the first recess 212 matched with the suture belt 31, and the mounting part 14 is provided with the second recess 141 matched with the locking belt 32. The first recess 212 plays a limiting role on the suture belt 31, and the second recess 141 plays a limiting role on the locking belt 32, so that the suture piece 30 is more firmly installed on the base 10.

[0113] The connecting part 22 extends along the sliding direction of the extrusion seat 20.

[0114] Part of the base 10 is located between the two connecting parts 22, and the connecting part 22 is connected with the base 10.

[0115] The base 10 is further provided with two guide displacement grooves 15, and the two guide displacement grooves 15 are symmetrically arranged on the two sides of the mounting part 14.

[0116] The two guide displacement grooves 15 are arranged at positions corresponding to the two ends of the suture belt 31.

[0117] In the process of relative movement of the suture belt 31 and the locking belt 32, the two ends of the suture belt 31 gradually become longer when passing through the part of the locking belt 32, and the guide displacement slot 15 is arranged to prevent the two ends of the suture belt 31 from interfering with the base 10, so that the suture belt 31 and the locking belt 32 can move relative to the ground, that is, the suture member 30 is ensured to be smaller relative to the ground, so as to improve the use reliability of the product.

[0118] As Figure 13 shown in an embodiment of the utility model, the matching structure 322 includes a connecting part 221 and elastic sheet parts 3222 located at both ends of the connecting part, and the elastic sheet parts are bent from the end of the connecting part.

[0119] The connecting part 3221 is attached to the locking belt 32 and fixedly connected with the locking belt 32, and the elastic sheet part 3222 can be clamped with the one-way clamping structure 312.

[0120] As Figure 14 shown in another embodiment of the utility model, the matching structure 322 is an elastic locking sheet.

[0121] The elastic locking sheet includes a fixed sheet 3223 and a locking sheet 3224 connected in sequence, the fixed sheet 3223 is connected with the locking belt 32, and the locking sheet 3224 can be clamped with the one-way clamping structure 312.

[0122] The two forms of the above-mentioned matching structure 322 are simple in structure, easy to manufacture, reliable in clamping elasticity, and can be assembled on the locking belt 32 by welding or pin shaft fixation and the like.

[0123] Embodiment two

[0124] As Figures 15 to 17 shown, the suture member 30 includes two suture parts 34 arranged at intervals.

[0125] The two suture parts 34 are arranged on the extrusion seat 20 and the mounting part 14 respectively, at least one suture part 34 is provided with a puncture part 33, and the two suture parts 34 are respectively provided with locking structures 35 capable of being locked with each other.

[0126] The extrusion seat 20 and the mounting part 14 jointly extrude the suture member 30, so that the two suture parts 34 move relative to each other, the distance between the two suture parts 34 gradually decreases until the two suture parts 34 are clamped together, so as to tighten the lesion mucosa tissue by the suture member 30, thereby ensuring effective treatment of the lesion mucosa tissue.

[0127] The suture member 30 is simple in structure and easy to process.

[0128] As Figure 15As shown, in one embodiment of the present invention, the extrusion seat 20 includes an extrusion part 21 and connecting parts 22 located at both ends of the extrusion part 21.

[0129] The connecting part 22 extends along the sliding direction of the pressing seat 20.

[0130] Part of the base 10 is located between two connecting parts 22, and the connecting parts 22 are connected to the base 10.

[0131] The two ends of the mounting part 14 are in contact with the two connecting parts 22 respectively, and can slide relative to the connecting parts 22. The pressing part 21, the two connecting parts 22 and the mounting part 14 form a mounting hole 23. The mounting hole 23 communicates with the through hole 11, and the sewing piece 30 is located in the mounting hole 23.

[0132] When the device attracts diseased mucosal tissue, the suction force adsorbs the mucosal tissue through the through hole 11 and the mounting hole 23. The above structure makes the squeezing seat 20, the connecting part 22 and the mounting part 14 relatively sealed around the mounting hole 23, thereby ensuring the suction effect.

[0133] The following describes several embodiments of the drive device in detail with reference to the accompanying drawings.

[0134] Example 1

[0135] like Figures 1 to 6 As shown, in one embodiment of this utility model, the driving device 40 includes: a transmission plate 41, a driving gear 42, and a driving component 43.

[0136] The driving component 43 is the first connecting wheel 431.

[0137] The drive gear 42 is fixed to one side of the first connecting wheel 431 and is coaxial with the first connecting wheel 431.

[0138] The first connecting wheel 431 is provided with a first annular groove, and the control cable 50 is wound in the first annular groove, which can control the first connecting wheel 431 to rotate relative to the base 10 along the first rotation direction or the second rotation direction.

[0139] After the endoscopic suture resection device extends into the human body, the control cord 50 is pulled, the control cord 50 moves in the first annular groove to drive the first connecting rotary wheel 431 to rotate relative to the base 10. Since the driving gear 42 is coaxially fixed with the first connecting rotary wheel 431, the first connecting rotary wheel 431 drives the driving gear 42 to rotate relative to the base 10. The driving gear 42 drives the transmission plate 41 to move relative to the base 10 through the meshing tooth belt. The transmission plate 41 drives the extrusion seat 20 to slide relative to the base 10. The extrusion seat 20 and the mounting portion 14 jointly extrude the suture 30 to make the suture 30 tighten to be laced at the root of the diseased mucosa tissue. The control cord 50 directly drives the extrusion seat 20 and the mounting portion 14 to jointly extrude the suture 30 to make the suture 30 tighten through the first connecting rotary wheel 431, the driving gear 42 and the transmission plate 41. The driving device 40 has the advantages of simple structure and reliable driving, thereby improving the use comfort of the product.

[0140] Embodiment two

[0141] As shown in the drawings, in an example of the utility model, the driving device 40 comprises a transmission plate 41, a driving gear 42 and a driving part 43. Figures 18 to 24

[0142] The driving part 43 comprises a second connecting rotary wheel 432 and a matching gear 433.

[0143] The matching gear 433 is fixed on one side surface of the second connecting rotary wheel 432 and is coaxial with the second connecting rotary wheel 432.

[0144] The driving gear 42 is meshed with the matching gear 433, and the diameter of the driving gear 42 is greater than that of the matching gear 433.

[0145] The second connecting rotary wheel 432 is provided with a second annular groove, the control cord 50 is wound in the second annular groove, and the second connecting rotary wheel 432 can be controlled to rotate relative to the base 10 in a first rotation direction or a second rotation direction.

[0146] ​After the endoscopic suturing and resection device is inserted into the human body, the control cable 50 is dragged, causing the control cable 50 to move within the second annular groove. This drives the second connecting wheel 432 to rotate relative to the base 10. Since the mating gear 433 is coaxially fixed with the second connecting wheel 432, the second connecting wheel 432 drives the mating gear 433 to rotate relative to the base 10. The mating gear 433 drives the drive gear 42 to rotate, and the drive gear 42 drives the transmission plate 41 to move relative to the base 10 through meshing teeth. The transmission plate 41 drives the compression seat 20 to slide relative to the base 10. The compression seat 20 and the mounting part 14 together compress the suture 30, tightening it to secure it to the root of the diseased mucosal tissue. The control cable 50 directly drives the compression seat 20 and the mounting part 14 to compress the suture 30 together, tightening it, through the second connecting wheel 432, the mating gear 433, the drive gear 42, and the transmission plate 41. In the above structure, the small-sized mating gear 433 drives the large-sized drive gear 42, which makes it less labor-intensive and increases driving efficiency, thus improving the product's performance.

[0147] Example 3

[0148] like Figures 25 to 30 As shown, in one embodiment of this utility model, the driving device 40 includes: a transmission plate 41, a driving gear 42, and a driving component 43.

[0149] The driving component 43 is a rack 434, which meshes with the driving gear 42.

[0150] After the endoscopic suturing and resection device is inserted into the human body, it drags the control cable 50. The control cable 50 drives the rack 434 to move relative to the base 10. The rack 434 drives the drive gear 42 to rotate relative to the base 10. The drive gear 42 drives the transmission plate 41 to move relative to the base 10 through meshing teeth. The transmission plate 41 drives the compression seat 20 to slide relative to the base 10. The compression seat 20 and the mounting part 14 jointly compress the suture 30 to tighten it, so as to ligate it at the root of the diseased mucosal tissue. The control cable 50 directly drives the compression seat 20 and the mounting part 14 to compress the suture 30 together through the rack 434, drive gear 42, and transmission plate 41 to tighten the suture 30. On the one hand, the transmission efficiency of the rack and pinion structure is generally high, which can effectively transmit the input power to the output end and achieve efficient power transmission. On the other hand, the meshing of the rack and pinion structure has high precision, which can achieve precise motion control. On the other hand, the maintenance of gear and rack transmission is relatively simple and convenient. For example, its service life can be extended by replacing worn gears or racks 434.

[0151] like Figure 25 and Figure 26As shown in the utility model in one embodiment, the base 10 is provided with a guide frame 70, the guide frame 70 is provided with a first guide structure 71, the rack 434 is provided with a second guide structure 435 matched with the first guide structure 71. Specifically, the first guide structure 71 is a guide groove, and the second guide structure 435 is a guide rail;Or, the first guide structure 71 is a guide groove, and the second guide structure 435 is a guide column;Or, the first guide structure 71 is a guide column, and the second guide structure 435 is a guide groove. Those skilled in the art should understand that, in addition to the above-mentioned embodiments, any structure that can realize the stable movement of the guide rack can be used, which will not be listed one by one here.

[0152] As shown in the utility model in one embodiment, the base 10 is provided with a guide frame 70, the guide frame 70 is provided with a first guide structure 71, the rack 434 is provided with a second guide structure 435 matched with the first guide structure 71. Specifically, the first guide structure 71 is a guide groove, and the second guide structure 435 is a guide rail;Or, the first guide structure 71 is a guide groove, and the second guide structure 435 is a guide column;Or, the first guide structure 71 is a guide column, and the second guide structure 435 is a guide groove. Those skilled in the art should understand that, in addition to the above-mentioned embodiments, any structure that can realize the stable movement of the guide rack can be used, which will not be listed one by one here. Figure 25 As shown in the utility model in one embodiment, the base 10 is provided with a guide frame 70, the guide frame 70 is provided with a first guide structure 71, the rack 434 is provided with a second guide structure 435 matched with the first guide structure 71. Specifically, the first guide structure 71 is a guide groove, and the second guide structure 435 is a guide rail;Or, the first guide structure 71 is a guide groove, and the second guide structure 435 is a guide column;Or, the first guide structure 71 is a guide column, and the second guide structure 435 is a guide groove. Those skilled in the art should understand that, in addition to the above-mentioned embodiments, any structure that can realize the stable movement of the guide rack can be used, which will not be listed one by one here.

[0153] The above structure makes the transmission plate 41 play a limiting role, avoids the transmission from slipping off the base 10, and thus guarantees the use reliability of the transmission plate 41.

[0154] In the description of the utility model, it should be pointed out that the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0155] In the description of the utility model, it should be pointed out that, unless otherwise specified and limited, the terms "mounting", "connecting" and "connecting" should be understood in a broad sense. The term "a plurality of" refers to two or more, unless otherwise specified. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0156] The above describes the utility model in combination with the preferred embodiments, but these embodiments are only exemplary and only play a descriptive role. On this basis, the utility model can be replaced and improved in many ways, which all fall within the protection scope of the utility model.

Claims

1. An endoscopic stapling resection device, characterized by, The endoscopic suture resection device comprises: a base provided with a through hole penetrating therethrough, the through hole being configured to cooperate with an endoscope, the base comprising a first end and a second end, the first end of the base being provided with a mounting portion; a pressing seat mounted on the first end of the base and capable of sliding linearly relative to the base, the pressing seat being provided at a position corresponding to the position of the mounting portion, and the pressing seat and the mounting portion being spaced apart; a suture provided in the space, the suture being capable of being tightened by the pressing seat and the mounting portion to be ligated on the diseased mucosal tissue; a driving device connected with the pressing seat, the driving device being configured to drive the pressing seat to slide relative to the base; a control cord connected with the driving device, the control cord being configured to drive the driving device to move relative to the base; and a loop treatment member provided in the through hole, the loop treatment member being configured to be ligated on the mucosal tissue.

2. The endoscopic suture resection device according to claim 1, wherein the suture comprises a suture belt and a locking belt, the suture belt being provided with a connecting area, the connecting area being provided with a one-way clamping structure; an end portion of the locking belt is provided with a matching space and a matching structure matched with the one-way clamping structure, an end portion of the suture belt passes through the matching space, so that part of the suture belt forms a loop shape; a puncture portion is provided on an inner loop surface of the suture.

3. The endoscopic suture resection device according to claim 2, wherein the pressing seat comprises a pressing portion and connecting portions located at two ends of the pressing portion; the connecting portions extend along the sliding direction of the pressing seat; part of the base is located between the two connecting portions, and the connecting portions are connected with the base; a guide clearance is further provided on the base, the guide clearance is provided on the side of the mounting portion and along the sliding direction of the pressing seat; the guide clearance is provided at a position corresponding to the position of the end portion of the suture belt.

4. The endoscopic suture resection device according to claim 2, wherein the matching structure comprises a connecting portion and elastic sheet portions located at two ends of the connecting portion, the elastic sheet portions are bent from the end portions of the connecting portion; the connecting portion is in contact with the locking belt and is fixedly connected with the locking belt, and the elastic sheet portions are capable of being clamped with the one-way clamping structure.

5. The endoscopic suture resection device according to claim 2, wherein the matching structure is an elastic locking sheet, the elastic locking sheet comprises a fixed sheet and a locking sheet connected in sequence, the fixed sheet is fixedly connected with the locking belt, and the locking sheet is capable of being clamped with the one-way clamping structure.

6. The endoscopic suture resection device according to claim 2, wherein a clamping groove is provided on the locking belt, the clamping groove is provided adjacent to the port of the matching space. The matching structure comprises a clamping ring and a locking sheet, the clamping ring is arranged in the clamping groove, and the locking sheet can be clamped with the one-way clamping structure. 7.The endoscopic suturing-and-resecting device according to claim 2, characterized in that, The one-way clamping structure is a protruding tooth. 8.The endoscopic suturing-and-resecting device according to claim 1, characterized in that, The suturing member comprises two spaced suturing portions, the two suturing portions are arranged on the pressing seat and the mounting portion respectively, at least one of the suturing portions is provided with a puncture portion, and the two suturing portions are respectively provided with locking structures capable of being locked with each other. 9.The endoscopic suturing-and-resecting device according to claim 8, characterized in that, The pressing seat comprises a pressing portion and connecting portions located at both ends of the pressing portion; The connecting portions extend along the sliding direction of the pressing seat; Part of the base is located between the two connecting portions, and the connecting portions are connected with the base; The two ends of the mounting portion are respectively in contact with the two connecting portions and can slide relative to the connecting portions, the pressing portion, the two connecting portions and the mounting portion form a mounting hole, the mounting hole is communicated with the through hole, and the suturing member is located in the mounting hole.

10. The endoscopic stapling resection device according to any one of claims 1 to 9, characterized in that, The driving device comprises: a transmission plate arranged on the base and capable of sliding relative to the base along the sliding direction of the pressing seat, the transmission plate is provided with meshing teeth; a driving gear arranged on the base and capable of rotating relative to the base, the driving gear is engaged with the meshing teeth; and a driving member arranged on the base and capable of moving relative to the base, the driving member is connected with the driving gear and the control cable respectively. 11.The endoscopic suturing-and-resecting device according to claim 10, characterized in that, The driving member is a first connecting gear; The driving gear is fixed on one side surface of the first connecting gear and coaxial with the first connecting gear; The first connecting gear is provided with a first annular groove, the control cable is wound in the first annular groove, and the first connecting gear can be controlled to rotate relative to the base in a first rotation direction or a second rotation direction. 12.The endoscopic suturing-and-resecting device according to claim 10, characterized in that, The driving member comprises a second connecting gear and a matching gear; The matching gear is fixed on one side surface of the second connecting gear and coaxial with the second connecting gear; The driving gear is engaged with the matching gear, and the diameter of the driving gear is greater than the diameter of the matching gear; The second connecting gear is provided with a second annular groove, the control cable is wound in the second annular groove, and the second connecting gear can be controlled to rotate relative to the base in a first rotation direction or a second rotation direction. 13.The endoscopic suturing-and-resecting device according to claim 10, characterized in that, The driving member is a rack, and the rack is engaged with the driving gear. 14.The endoscopic suturing-and-resecting device according to claim 13, characterized in that, The base is provided with a guide frame, the guide frame is provided with a first guide structure, and the rack is provided with a second guide structure matched with the first guide structure. 15.The endoscopic suturing-and-resecting device according to claim 13, characterized in that, The base and the rack are provided with an avoiding space corresponding to the transmission plate, and the transmission plate can be inserted into the avoiding space. 16.The endoscopic suturing-and-resecting device according to claim 10, characterized in that, The base is provided with a first limiting structure, and the extrusion seat is provided with a second limiting structure matched with the first limiting structure; or The base is provided with a first limiting structure, and the transmission plate is provided with a second limiting structure matched with the first limiting structure. 17.The endoscopic suturing-and-resecting device according to claim 16, characterized in that, One of the first limiting structure and the second limiting structure is a limiting groove, and the other is a limiting block.

18. The endoscopic stapling resection device according to any one of claims 1 to 9, wherein, The cross-sectional area of the part of the base at the first end or the cross-sectional area of the structure formed by the extrusion seat and the part of the base at the first end is smaller than the cross-sectional area of the part of the base at the middle; and / or The cross-sectional area of the part of the base at the second end is smaller than the cross-sectional area of the part of the base at the middle.

19. The endoscopic stapling resection device according to any one of claims 1 to 9, wherein, The distal end of the extrusion seat is in the same plane as the distal end of the mounting portion; The distal end of the extrusion seat refers to the end of the extrusion seat away from the base; The distal end of the mounting portion refers to the end of the mounting portion away from the base.

Images