A large wound suturing device with multiple nails tightened continuously

Abstract

The present invention relates to a large wound suturing device with multiple nails tightened continuously, which belongs to the technical field of medical devices and solves the problem of difficulty in suturing large wounds. The suturing device of the present invention comprises: a guide wire, an outer sleeve, a suture, a suture nail and an indication component; the end of the outer sleeve is provided with an internal thread and screwed to the suture nail; a plurality of suture nails can rotate synchronously; the guide wire is inserted into the interior of the outer sleeve, and a driving boss is provided at the end to engage with the top suture nail, and the guide wire can drive the suture nail to rotate when rotating; the end of the suture nail is provided with a screwing part, and when the suture nail rotates, the screwing part can be screwed into the tissue to be sutured; the suture is connected between the plurality of suture nails; the indication component is provided at the end of the outer sleeve, and when the guide wire rotates, the number of rotations can be displayed through the indication component. The present invention realizes the rotational nailing and release of the suture nail, and connects the suture nail to tighten the wound surface through the suture, which is simple and convenient to operate, and can display the screwing process of the suture nail.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a large wound suturing device with multiple nails continuously tightened. Background Art

[0002] After endoscopic resection of gastrointestinal tumors, a huge wound will appear, which is relatively difficult to deal with clinically. The instruments and suturing methods currently available in clinical practice, such as metal clips, tissue glue, etc., are still very difficult for larger wounds and perforations (≥3cm). The existing continuous suturing device inserts multiple suture staples around the wound, and multiple suture staples are connected by sutures. The multiple suture staples are tightened to reduce the size of the large wound, thereby facilitating fine suturing, providing a highly operational solution for suturing large wounds.

[0003] However, the existing wound suture related products still have the following problems that are difficult to solve:

[0004] 1. Suture staples are intermittent sutures. After one suture staple is screwed in, a new one needs to be installed, which is time-consuming and costly.

[0005] 2. Once the suture staples are inserted, they cannot be reversed and removed. If they are screwed into the wrong position, the overall suture effect will be affected.

[0006] 3. During the screw-in process, the operator cannot grasp the number of rotations;

[0007] 4. The release of the suture staples can only rely on the dragging force, and cannot be released freely. There is a possibility that the suture staples will be pulled out by the dragging force, and there is a risk of further tissue damage.

[0008] Based on the above reasons, it is necessary to develop a large wound suturing device with multiple nails for continuous tightening, which is a surgical instrument suitable for single-channel endoscopic treatment, capable of intermittent or continuous suturing, simple to operate and efficient. Summary of the invention

[0009] In view of the above analysis, the present invention aims to provide a large wound suturing device with multiple nails continuously tightened, so as to solve the problem that existing suturing instruments are difficult to handle large wounds and the equipment is complicated to operate and difficult to promote and apply.

[0010] The purpose of the present invention is mainly achieved through the following technical solutions:

[0011] A large wound suturing device with multiple staples for continuous tightening, comprising: a guide wire, an outer sleeve, a suture thread, a suture staple and an indicator assembly;

[0012] The end of the outer sleeve is provided with a threaded section; the threaded section is provided with an internal thread; the suture nail is arranged inside the outer sleeve and can be screwed with the internal thread;

[0013] The suture staples are provided in plurality, and the plurality of suture staples are mutually nested and installed from top to bottom, and can rotate synchronously;

[0014] The guide wire can be inserted into the inner part of the outer sleeve, and a driving boss is arranged at the end of the guide wire; the driving boss can be engaged with the uppermost suture nail, and the guide wire can drive the suture nail to rotate when rotating;

[0015] The end of the suture nail is provided with a screwing part, and when the suture nail is rotated, the screwing part can be screwed into the tissue to be sutured; the suture line is connected between multiple suture nails, and multiple suture nails can be connected in series;

[0016] The indicating assembly is arranged at the end of the outer sleeve, and when the guide wire rotates, the number of rotations can be displayed through the indicating assembly; the indicating assembly includes: a dial, an indicating plate, a driving gear and a positioning gear.

[0017] Further, the guide wire can be embedded in the driving gear and drive the driving gear to rotate; the driving gear can drive the indicating disk to rotate through the positioning gear;

[0018] The indicator disk is rotatably mounted above the scale disk, and an indicator mark is arranged on the top of the indicator disk; when the indicator disk rotates, the number of rotations of the guide wire is displayed through the scale on the scale disk corresponding to the indicator mark.

[0019] Furthermore, an inner gear ring is provided on the inner side of the indicating disk; the inner gear ring is meshed with the positioning gear, and the positioning gear is meshed with the driving gear; when the guide wire drives the driving gear to rotate, the indicating disk rotates synchronously.

[0020] Furthermore, a transmission ratio between the inner gear ring and the driving gear is less than 1.

[0021] Furthermore, the indicating plate comprises: an upper cover plate and an inner gear ring; the upper cover plate is fixedly installed above the inner gear ring.

[0022] Furthermore, a scale is set on the edge of the upper surface of the dial to display the number of revolutions of the guide wire.

[0023] Furthermore, a positioning plate is fixedly arranged on the upper surface of the scale plate, and guide wire holes are arranged in the middle of both of them, and the guide wire holes are used to allow the guide wire to pass through.

[0024] Furthermore, the positioning gear is rotatably mounted on the positioning disk; there are three positioning gears, which are circumferentially and evenly spaced above the scale disk; the driving gear is arranged in the center of the three positioning gears and meshes with the three positioning gears at the same time.

[0025] Furthermore, the suture staple comprises: an upper sleeve, a screw-on portion, a clamping portion and a screw-on portion; the upper sleeve, the screw-on portion, the clamping portion and the screw-on portion are arranged in sequence from top to bottom and are an integrated structure.

[0026] Furthermore, the diameter of the upper sleeve is smaller than the diameter of the screw-on portion.

[0027] Furthermore, an outer surface of the screw-on portion is provided with an external thread, and the external thread can be screwed together with the internal thread of the outer sleeve.

[0028] Furthermore, a sleeve inner cavity is provided inside the upper sleeve, and a locking groove is provided on the side wall of the sleeve inner cavity; a plurality of locking ridges are provided on the outer side of the locking portion; the locking portion can be inserted into the sleeve inner cavity; the locking ridges can be engaged with the locking grooves, so that two adjacent suture nails are interlocked with each other and rotate synchronously.

[0029] Furthermore, the screw-on portion is provided with a threading hole, through which the suture thread is threaded.

[0030] Furthermore, a first driving ridge is provided on the outer side of the driving boss, and the driving boss and the first driving ridge can be respectively inserted into the inner cavity of the sleeve and the engaging groove.

[0031] Furthermore, a guide wire through hole is provided in the middle of the scale plate, and the guide wire can pass through the guide wire through hole.

[0032] Furthermore, a guidewire handle is provided at the outer end of the guidewire, and a cannula handle is provided at the outer end of the outer cannula.

[0033] The technical solution of the present invention can achieve at least one of the following effects:

[0034] 1. Rotation release;

[0035] The multi-nail continuously tightened large wound suturing device of the present invention has a threaded section at the lower end of an outer sleeve, and the external thread on the suture nail and the internal thread of the threaded section can be screwed together, and then the end suture nail is driven to rotate by continuously rotating the guide wire, and the suture nail can be gradually screwed out of the outer sleeve, thereby realizing the rotational release of the suture nail; after one suture nail is released, the next suture nail and the internal thread at the end of the outer sleeve can be driven from an unscrewed state to a screwed state by continuing to rotate the guide wire, and the suture nail can be screwed out from the end of the outer sleeve by further rotating it, and finally multiple suture nails can be rotationally released in sequence.

[0036] 2. Continuous suture;

[0037] The large wound suturing device with multiple sutures continuously tightened of the present invention realizes the synchronous rotation of multiple sutures by arranging an installation mode in which multiple sutures are sequentially embedded, and can drive the multiple sutures to rotate synchronously by engaging the guide wire with the uppermost suture, and can gradually realize the non-screwing, screwing and unscrewing states with the outer sleeve during the rotation of the sutures, and the rotation of the sutures can screw the screwing part into the human tissue at the same time; the present invention realizes the sequential screwing of multiple sutures into the tissue to be sutured by continuously rotating and releasing the multiple sutures, and realizes the shrinkage of the wound by tightening the suture thread, so that the large wound can be shrunk into a small wound that can be sutured by conventional schemes, and is convenient for subsequent suturing operations.

[0038] 3. Reverse rotation function;

[0039] The large wound suturing device with multiple nails continuously tightened of the present invention has an external thread on the outer surface of the screw-on part of the suture nail and an internal thread at the end of the outer sleeve. When the suture nail is improperly installed and needs to be taken out, the outer sleeve can be screwed together with the suture nail by rotating the outer sleeve in the opposite direction. The suture nail is further driven to rotate in the opposite direction by the engagement of the guide wire and the suture nail, so that the suture nail can be gradually screwed from the outside of the outer sleeve into the inside of the outer sleeve, and the suture nail can be screwed out of the human tissue structure at the same time, so that the suture nail can be taken out.

[0040] 4. Rotation number indication function;

[0041] The large wound suturing device with multiple nails continuously tightened of the present invention is provided with an indicating assembly. The indicating assembly realizes the synchronous rotation of the driving gear and the guide wire by the engagement of the driving gear with the driving convex ring and the second driving convex ridge outside the guide wire, and further drives the indicating disk to rotate relative to the scale plate by the mutual engagement among the driving gear, the positioning gear and the inner gear ring of the indicating disk. The indicating assembly of the present invention can realize that when the driving gear rotates one circle, the inner gear ring, i.e., the indicating disk, only rotates through a certain angle by reasonably setting the transmission ratio of the driving gear and the inner gear ring, and the corresponding scale indicating the number of circles is marked on the scale plate; when the guide wire rotates, the scale on the scale plate pointed to by the indicating mark on the indicating disk indicates the number of circles of the guide wire, thereby realizing the indication function of the number of circles.

[0042] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the subsequent description, and some advantages can become obvious from the description, or can be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the contents particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The drawings are only for the purpose of illustrating particular embodiments and are not to be considered limiting of the present invention. Like reference symbols denote like components throughout the drawings.

[0044] Figure 1 This is a schematic structural diagram of a large wound suturing device with multiple staples continuously tightened according to Example 1 of the present invention;

[0045] Figure 2 This is a schematic diagram of the internal structure of a large wound suturing device with multiple staples continuously tightened according to Example 1 of the present invention;

[0046] Figure 3 This is a schematic diagram of the structure of the suture staples of the large wound suture device with multiple staples continuously tightened according to Example 1 of the present invention;

[0047] Figure 4 is a schematic diagram of the arrangement state of multiple suture staples;

[0048] Figure 5 is a schematic diagram of a plurality of suture staples in an engaged state;

[0049] Figure 6 It is a schematic diagram of the separation state of the guide wire and the suture staple;

[0050] Figure 7 It is a schematic diagram of the separation state of the guide wire and the suture staple assembly;

[0051] Figure 8 It is a schematic diagram of the engagement state of the guide wire and the suture staple assembly;

[0052] Fig. 9 is a schematic diagram of the structure of the outer sleeve;

[0053] Fig.10 is a schematic diagram of the structure of the guide wire;

[0054] Fig.11 Schematic diagram of the state of the guide wire being inserted into the outer sleeve (partial structure)

[0055] Fig.12 It is a schematic diagram of the matching state between the driving convex ring on the guide wire and the driving gear;

[0056] Fig.13 A schematic diagram of the internal structure of the indicating component;

[0057] Fig.14 It is a schematic diagram of the structure of the dial and the positioning plate;

[0058] Fig.15 The schematic diagram of the structure of the suture nails of the large wound suture device with multiple nails continuously tightened in Example 2 of the present invention Figure 1 ;

[0059] Fig.16The schematic diagram of the structure of the suture nails of the large wound suture device with multiple nails continuously tightened in Example 2 of the present invention Figure 2 ;

[0060] Fig.17 This is a schematic diagram of the suture thread installation state of the large wound suture device with multiple staples continuously tightened according to Example 3 of the present invention;

[0061] Fig.18 This is a structural schematic diagram of a thread holder of a large wound suture device with multiple nails continuously tightened according to Embodiment 4 of the present invention;

[0062] Fig.19 This is a schematic diagram of the internal structure of a thread holder of a large wound suture device with multiple staples for continuous tightening according to embodiment 4 of the present invention.

[0063] Reference numerals:

[0064] 1-guide wire; 2-outer sleeve; 3-suture; 4-suture staple; 5-indicator assembly; 6-cage;

[0065] 101-guidewire body; 102-driving boss; 103-first driving ridge; 104-guidewire handle; 105-driving ridge; 106-second driving ridge;

[0066] 201-internal thread; 202-casing handle;

[0067] 401-upper sleeve; 402-screw-on portion; 403-clamping portion; 404-screw-on portion; 405-threading hole; 406-sleeve inner cavity; 407-clamping groove; 408-external thread; 409-clamping ridge; 410-cable clamping groove; 4101-longitudinal wire groove; 4102-arc-shaped wire groove;

[0068] 501- scale plate; 502- indicator plate; 5021- upper cover plate; 5022- inner gear ring; 503- positioning plate; 504- driving gear; 505- positioning gear; 506- convex ring engaging hole; 507- driving groove; 508- indicator mark; 509- guide wire through hole;

[0069] 601-limiting cone ring; 602-linear slot. DETAILED DESCRIPTION

[0070] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0071] Example 1

[0072] A specific embodiment of the present invention discloses a large wound suturing device with multiple nails continuously tightened, such as Figure 1 , Figure 2 As shown, it includes: a guide wire 1, an outer sleeve 2, a suture 3, a suture nail 4 and an indication component 5; the end of the outer sleeve 2 is provided with a threaded section; the threaded section is provided with an internal thread 201; the suture nail 4 is arranged inside the outer sleeve 2 and can be screwed with the internal thread 201; the suture nail 4 is provided with a plurality of suture nails, and the plurality of suture nails 4 are mutually nested and installed from top to bottom and can rotate synchronously; the guide wire 1 can be inserted into the inner part of the outer sleeve 2, and the end of the guide wire 1 is provided with a driving boss 102; the driving boss 102 can be mutually engaged with the uppermost suture nail 4, and the guide wire 1 can drive the suture nail 4 to rotate when it rotates; the end of the suture nail 4 is provided with a screwing part 404, and when the suture nail 4 rotates, the screwing part 404 can be screwed into the tissue to be sutured; the suture 3 is connected between the plurality of suture nails 4; the indication component 5 is arranged at the end of the outer sleeve 2, and when the guide wire 1 rotates, the number of rotations can be displayed by the indication component 5.

[0073] In this embodiment, by arranging multiple suture staples 4 to be interlocked with each other from top to bottom, or in other words, multiple suture staples 4 are sequentially engaged, it is achieved that the multiple suture staples 4 are synchronously driven to rotate synchronously by the guide wire 1; the rotational power of the guide wire 1 can be transmitted from top to bottom to the terminal suture staple 4, thereby driving the terminal suture staple 4 to rotate, and during the rotation of the terminal suture staple 4, it can gradually screw with the internal thread 201 at the bottom end of the outer sleeve 2, and at the same time screw into the human tissue for nailing; with the continuous rotation of the guide wire 1, the suture staple 4 can be gradually screwed out from the bottom end of the outer sleeve 2, untwisted from the internal thread 201, and at the same time complete the function of rotating the suture staple 4 into the human tissue.

[0074] In this embodiment, after the first suture staple 4 (end) is rotated and inserted, the first suture staple 4 is simultaneously separated from the outer sleeve 2, and then the penultimate suture staple 4 can be driven to be screwed together with the outer sleeve 2 through the guide wire 1. At this time, the position of the outer sleeve 2 is adjusted through the endoscope, and then the installation position of the second suture staple 4 can be adjusted.

[0075] Preferably, the number of turns of the internal thread 201 is equal to the number of turns of the external thread 408 on the outside of the suture staple 4; in this embodiment, by setting the number of turns of the internal thread 201 of the outer sleeve 2 and the number of turns of the external thread 408 of the suture staple 4 to be equal, the two can be in two states of partial screwing and complete screwing.

[0076] In a specific embodiment of the present invention, Figure 2 , Figure 3 As shown, the suture staple 4 includes: an upper sleeve 401, a screw-on portion 402, a clamping portion 403 and a screw-on portion 404; the upper sleeve 401, the screw-on portion 402, the clamping portion 403 and the screw-on portion 404 are arranged in sequence from top to bottom and are an integrated structure.

[0077] Specifically, Figure 3 As shown, the diameter of the upper sleeve 401 is smaller than the diameter of the screw-on portion 402 .

[0078] Specifically, Figure 3 As shown, the outside of the screw-on portion 402 is provided with an external thread 408 , and the external thread 408 can be screwed together with the internal thread 201 of the outer sleeve 2 .

[0079] Preferably, the screw-on portion 404 is a spiral structure, and when the suture staple 4 rotates as a whole, the screw-on portion 404 can rotate into human tissue to achieve connection between the suture staple 4 and tissue surrounding the wound to be sutured of the patient.

[0080] Furthermore, in order to achieve the synchronization of releasing the suture staple 4 from the outer sleeve 2 and screwing the suture staple 4 into the human tissue; preferably, in this embodiment, the number of spiral turns of the screwing portion 404 is equal to the number of thread turns of the internal thread 201.

[0081] Preferably, the pitch of the helical structure of the screwing part 404 is equal to the pitch of the internal thread 201. In this embodiment, by setting the pitch of the screwing part 404 equal to the pitch of the internal thread 201, the suture nail 4 can be gradually screwed out from the bottom of the outer sleeve 2 and screwed into the human tissue at the same speed.

[0082] Specifically, Figure 2 , Figure 3 As shown, the interior of the upper sleeve 401 is provided with a sleeve inner cavity 406, and a locking groove 407 is provided on the side wall of the sleeve inner cavity 406; the outer side of the locking portion 403 is provided with a plurality of locking ridges 409; the locking portion 403 can be inserted into the sleeve inner cavity 406; the locking ridges 409 can be engaged with the locking grooves 407, so that two upper and lower adjacent suture nails 4 are interlocked and rotate synchronously.

[0083] Specifically, Figure 2 , Figure 6 As shown, a first driving ridge 103 is disposed on the outer side of the driving boss 102 , and the driving boss 102 and the first driving ridge 103 can be respectively inserted into the sleeve inner cavity 406 and the engaging groove 407 .

[0084] like Figure 3 As shown, the threading hole 405 is provided on the screw-on portion 402, and the suture 3 is inserted into the suture 4. Specifically, the threading hole 405 is provided at the edge of the screw-on portion 402 and is located outside the upper sleeve 401.

[0085] like Figure 7 , Figure 8As shown, the suture thread 32 is inserted into the threading hole 405, so that multiple suture staples 5 can be connected in series, and the suture staples 4 connected in series are engaged with each other, and can then be rotationally driven by the driving boss 102 and the first driving ridge 103 at the end of the guide wire 1.

[0086] It is worth noting that: when multiple suture staples 4 are continuously nailed into human tissue, due to the rotation of the suture staples 4, the suture thread 3 will be wrapped around the outside of the upper sleeve 401, thereby achieving the effect of shortening the distance between the suture staples 4 to a certain extent and tightening the wound; and when the wound is not tightened after two consecutive suture staples 4 are nailed into the tissue, the suture thread 3 is pulled outward or unwound from the upper sleeve 401 through the action of the endoscope, and the suture thread 3 is continued to be pulled outward so that the length of the suture thread 3 between the two suture staples 3 is shortened, thereby tightening the wound surface.

[0087] Preferably, in this embodiment, the number of the suture staples 4 is set to four; the four suture staples are arranged in sequence from top to bottom as shown in FIG. Figure 4 As shown, the four suture staples 4 are mutually nested and engaged. Figure 5 In this embodiment, the number of suture staples 4 is not intended to limit the protection scope of the present invention, and the number of suture staples 4 can be set as required in actual application.

[0088] like Figure 4 , Figure 5 As shown, the four suture staples 4 are respectively: a first suture staple 41, a second suture staple 42, a third suture staple 43 and a fourth suture staple 44. Figure 4 , Figure 5 As shown. Specifically, the driving boss 102 and the first driving ridge 103 at the end of the guide wire 1 engage with the sleeve lumen 406 and the engaging groove 407 of the first suture staple 41, thereby driving the first suture staple 41 to rotate; the engaging portion 403 and the engaging ridge 409 of the first suture staple 41 are respectively engaged in the sleeve lumen 406 and the engaging groove 407 of the second suture staple 42, thereby driving the second suture staple 42 to rotate; similarly, the second suture staple 42 can drive the third suture staple 43 to rotate, and the third suture staple 43 can drive the fourth suture staple 44 to rotate. When the fourth suture staple 44 rotates, it can be screwed with the internal thread 201 at the end of the outer sleeve 2, and at the same time, the screwing portion 404 at the end of the fourth suture staple 44 can be screwed into the tissue to be sutured.

[0089] In a specific embodiment of the present invention, Fig.11 , Fig.12 , Fig.13 , Fig.14As shown, the indicating assembly 5 comprises: a dial 501, an indicating disc 502, a driving gear 504 and a positioning gear 505; the guide wire 1 can drive the driving gear 504 to rotate; an inner gear ring 5022 is arranged on the inner side of the indicating disc 502; the inner gear ring 5022 is meshed with the positioning gear 505, and the positioning gear 505 is meshed with the driving gear 504; when the guide wire 1 drives the driving gear 504 to rotate, the indicating disc 502 rotates synchronously, and the transmission ratio of the inner gear ring 5022 to the driving gear 504 is less than 1; the indicating disc 502 is rotatably mounted above the dial 501, and an indicating mark 508 is arranged on the top of the indicating disc 502; when the indicating disc 502 rotates, the number of rotations of the guide wire 1 is displayed by the scale on the dial 501 corresponding to the indicating mark 508.

[0090] Specifically, the indicator plate 502 includes: an upper cover plate 5021 and an inner gear ring 5022; the upper cover plate 5021 is fixedly installed above the inner gear ring 5022 and is a circular ring structure. The inner gear ring 5022 is meshed with the positioning gear 505. When the positioning gear 505 rotates, it can drive the inner gear ring 5022 to rotate. The upper cover plate 5021 is used to limit the up and down displacement of the driving gear 504, so that the driving gear 504 can only rotate but not move.

[0091] Furthermore, a scale is set on the edge of the upper surface of the dial 501 to display the number of revolutions of the guide wire 1.

[0092] Furthermore, if Fig.14 As shown, a positioning plate 503 is fixedly disposed on the upper surface of the scale plate 501 . The positioning plate 503 and the scale plate 501 are an integrated structure, and a guide wire through hole 509 is disposed in the middle of both.

[0093] Furthermore, the positioning gear 505 is rotatably mounted on the positioning disk 503; preferably, three positioning gears 505 are provided, and are arranged at equal intervals in the circumferential direction above the scale plate 501, such as Fig.13 Specifically, a rotating shaft is fixedly installed above the positioning plate 503 , and the positioning gear 505 is sleeved and installed on the rotating shaft and can rotate relative to the positioning plate 503 .

[0094] Furthermore, the driving gear 504 is arranged in the center of the three positioning gears 505 and is meshed with the three positioning gears 505 at the same time; specifically, the lower surface of the driving gear 504 is in contact with but not connected to the upper surface of the positioning disk 503, and the upper surface of the driving gear 504 is in contact with but not connected to the lower surface of the upper cover plate 5021, so that the driving gear 504 is limited between the positioning disk 503 and the upper cover plate 5021 and can rotate but cannot move; when the guide wire 1 is engaged with the driving gear 504, it can drive the driving gear 504 to rotate, and then drive the positioning gear 505 to rotate, and drive the inner gear ring 5022 to rotate through the positioning gear 505; when the inner gear ring 5022 rotates, the indicator mark 508 on the surface of the upper cover plate 5021 rotates and the scale aligned with the indicator mark 508 indicates the number of rotations of the guide wire 1.

[0095] Specifically, Fig.12 , Fig.13 As shown, a convex ring engaging hole 506 is provided in the middle of the driving gear 504 , and a driving groove 507 is provided on the side of the convex ring engaging hole 506 .

[0096] Specifically, Fig.10 As shown, the outer side of the guide wire 1 is provided with a driving convex ring 105 and a second driving convex ridge 106 engaged with the convex ring engaging hole 506 and the driving groove 507. When the second driving convex ridge 106 is engaged with the driving groove 507, the guide wire 1 can drive the driving gear 504 to rotate. Alternatively, a rectangular / polygonal driving hole is provided in the middle of the driving gear 504, and correspondingly, a driving part matched with the driving hole is provided outside the guide wire 1, so as to realize the synchronous rotation of the driving gear 504 and the guide wire 1.

[0097] Furthermore, if Fig. 9 , Fig.11 As shown, a circular hole is provided in the middle of the annular upper cover plate 5021, and the driving convex ring 105 and the second driving convex ridge 106 of the guide wire 1 can pass through the circular hole into the convex ring engaging hole 506 and the driving groove 507 of the driving gear 504. Specifically, the diameter of the circular hole is smaller than the diameter of the driving gear 504, and the diameter of the circular hole is larger than the diameter of the convex ring engaging hole 506 and can expose the driving groove 507.

[0098] It is worth noting that: during the rotation of the guide wire 1, as the suture staples 4 are released sequentially, the guide wire 1 will slide downward relative to the outer sleeve 2; while the guide wire 1 is displaced relative to the outer sleeve 2, the driving convex ring 105 and the second driving convex ridge 106 can slide in the convex ring engaging hole 506 and the driving groove 507, without affecting the rotational drive of the guide wire 1 on the driving gear 504.

[0099] Preferably, the lengths of the driving protrusion ring 105 and the second driving protrusion 106 are set to be greater than the sum of the lengths of the plurality of suture staples 4 .

[0100] Furthermore, the diameter of the convex ring engaging hole 506 is greater than the maximum diameter of the suture staple 4 , so that the suture staple 4 can pass through the convex ring engaging hole 506 and enter the interior of the outer sleeve 2 .

[0101] Furthermore, if Fig.14 As shown, a guide wire through hole 509 is provided in the middle of the scale plate 501, and the guide wire 1 can pass through the guide wire through hole 509. Specifically, the diameter of the guide wire through hole 509 is larger than the diameter of the convex ring engaging hole 506, and smaller than the diameter of the driving gear 504; the guide wire 1 and the driving convex ring 105 and the second driving convex ridge 106 provided on the surface thereof can pass through the guide wire through hole 509.

[0102] Further, the transmission ratio ω between the driving gear 504 and the inner gear ring is the product of the transmission ratio ω1 between the driving gear 504 and the positioning gear 505 and the transmission ratio ω2 between the positioning gear 505 and the inner gear ring, that is, ω=ω1×ω2. For example, when ω1=2 and ω2=5, ω=10, that is, the driving gear 504 rotates one circle, and the indicator disk 502 rotates 36 degrees. When ω1=6 and ω2=6, ω=36, that is, the driving gear 504 rotates one circle, and the indicator disk 502 rotates 10 degrees.

[0103] Preferably, the transmission ratio ω1 between the driving gear 504 and the positioning gear 505 is greater than 2:1, that is, the rotational angular velocity of the positioning gear 505 is less than half of the rotational angular velocity of the driving gear 504 .

[0104] Preferably, the transmission ratio ω2 between the positioning gear 505 and the inner gear ring of the indicator plate 502 is greater than 5:1, that is, the rotational angular velocity of the positioning gear 505 is greater than 5 times the rotational angular velocity of the inner gear ring.

[0105] In this embodiment, by setting the transmission ratio of the driving gear 504 and the inner gear ring, when the guide wire 1 rotates, the rotation angle of the indicator disk 502 indicates the number of rotations of the guide wire 1, and then the number of rotations of the suture staple 4 can be indirectly displayed, so as to ensure that the suture staple 4 is fully screwed with the human tissue, and try to avoid excessive screwing to damage the human tissue and avoid secondary damage to the organ.

[0106] During implementation, the guide wire 1 is inserted into the outer sleeve 2, and the driving convex ring 105 and the second driving convex ridge 106 on the outside of the guide wire 1 can cooperate with the convex ring engagement hole 506 and the driving groove 507 in the middle of the driving gear 504; then the driving gear 504 is driven to rotate, and the driving gear 504 transmits the movement to the indicator disk 502 through the positioning gear 505 and reduces the rotation speed, and the number of revolutions is displayed by the indicator mark 508 on the indicator disk 502.

[0107] Specifically, Fig.10As shown, a guidewire handle 104 is provided at the outer end of the guidewire 1. The guidewire handle 104 is arranged above the guidewire 1 to drive the guidewire 1 to rotate.

[0108] Specifically, Fig. 9 As shown, the outer end of the outer tube 2 is provided with a tube handle 202. The tube handle 202 is arranged on one side of the outer tube 2 and is fixedly connected to the outer tube 2; when in use, one hand holds the tube handle 202 to position the outer tube 2, and the other hand rotates the guide wire handle 104 to realize the rotation of the guide wire 1 relative to the outer tube 2.

[0109] Preferably, the outer sleeve 2 is made of transparent material.

[0110] Furthermore, the suturing device of the present invention has different models of suture staples in terms of size design according to different application scenarios, that is, the appropriate size is adjusted when installed in vitro according to the differences in different parts of the stomach, duodenum, and colorectum, or the mucosal layer and the entire layer of the digestive tract wall. For example, the length of the suture staples is 5.5mm for the stomach, 4mm for the esophagus, 3mm for the duodenum, and 3mm for the colorectum, which is necessary to ensure that the depth of penetration into the muscle layer is sufficient and to reduce the risk of injury to surrounding large blood vessels. The present invention adjusts the appropriate size of the suture staples 4 according to the differences in different parts of the stomach, duodenum, and colorectum, or the mucosal layer and the entire layer of the digestive tract wall, which helps to reduce the incidence of suture complications.

[0111] The method of using the suturing device of this embodiment is as follows:

[0112] In the first step, multiple suture staples 4 are sequentially loaded into the inner part of the outer sleeve 2; and a guide wire 1 is further inserted into the outer sleeve 2. The multiple suture staples 4 are compressed by the guide wire 1, and the driving boss 102 and the first driving ridge 103 at the end of the guide wire 1 are rotated to engage with the sleeve inner cavity 406 and the engaging groove 407 of the upper sleeve 401 of the suture staple 4. At this time, the threaded section at the end of the outer sleeve 2 limits the end suture staple 4 from leaking out from the bottom of the outer sleeve 2. Preferably, the number of suture staples 4 is 4.

[0113] In the second step, the end of the endoscope catheter is inserted into the wound to be sutured; the suturing device consisting of the guide wire 1, the outer sleeve 2, and the suture staple 4 is inserted into the internal channel of the endoscope until the end of the outer sleeve 2 passes through the end of the endoscope catheter. The endoscope is driven to move, and the outer sleeve 2 and the suture staple 4 inside it are moved to the periphery of the wound to be sutured, and the suture staple 4 at the end is brought into contact with human tissue.

[0114] The third step is to rotate the guide wire 1, and drive the top suture staple 4 (first suture staple 41) which is interlocked with it to rotate. Then, since the first suture staple 41, the second suture staple 42, the third suture staple 43 and the fourth suture staple 44 are nested with each other, the rotational power can be sequentially transmitted from the first suture staple 41 to the fourth suture staple 44, and drive the fourth suture staple 44 to rotate.

[0115] In the fourth step, the fourth suture staple 44 gradually engages with the internal thread 201 of the threaded section at the end of the outer sleeve 2 as it rotates, and at the same time, the screwing portion 404 at the bottom of the fourth suture staple 44 gradually screws into the human tissue; the guide wire 1 continues to be rotated until the fourth suture staple 44 and the threaded section of the outer sleeve 2 are screwed out, completing the release of the end suture staple 4 from the outer sleeve 2, and at this time, the first suture staple 4 is installed.

[0116] In the fifth step, the above steps are repeated until all four suture staples 4 are installed in place, and the suture thread 3 is gradually tightened as the suture staples 4 are installed. Under the tension of the suture thread 3, two adjacent suture staples 4 gradually approach each other, thereby pulling the tissues around the wound surface to converge toward the middle, thereby achieving a shrinkage effect on the large wound surface.

[0117] Compared with the prior art, the technical solution of the present invention has at least one of the following beneficial effects:

[0118] 1. The suturing device of the present invention realizes endoscopic surgical continuous or interrupted suturing of the wound surface by tightening the suture thread 3. It has a simple structure and is easy to operate, which greatly reduces the difficulty of operation and improves the suturing efficiency. In addition, the three special functions of the suture staple 4, namely, adjustable, rotatable, and releasable, are strengthened and realized, thereby further improving the suturing effect.

[0119] 2. The suturing device of the present invention releases the suture nail by rotating the guide wire 1, and the sleeve handle 202 is set on one side of the indicator component 5. The indicator component 5 is a rotating device, and the number of rotations can be marked by the rotation of the driving gear and the indicator disk. Recording the number of rotations can remind the endoscopist's operation to prevent the rotation from being too deep or too shallow. The guide wire 1 and the outer sleeve 2 can both rotate forward and backward. Once the first suture nail 4 is inserted incorrectly or the position is deviated, it can be rotated in the opposite direction to be removed, so as to prevent the entire suture effect from being affected by the insertion error of the suture nail 4.

[0120] 3. The suturing device of the present invention assembles suture staples outside the body. If the wound tensioning effect is not ideal after the suture staples are inserted (the wound closure is not sufficient), the suture staples 4 can be further installed for suturing, and the suture staples 4 can be further inserted into the outer sleeve 2, and then the suture staples 4 are screwed into the tissue to promote the closure of the wound until the wound is completely closed or until the wound can be clamped with an ordinary metal clip. After the wound closure is completed, the thread can be cut with scissors, which is more flexible and active.

[0121] 4. In the suturing device of the present invention, an indicating assembly 5 is fixedly installed on the outer end of the outer sleeve 2. The driving gear 504 of the indicating assembly 5 rotates synchronously with the guide wire 1, and the rotational motion is transmitted to the indicating disk 502 through the positioning gear 505. By setting the transmission ratio between the driving gear 504 and the positioning gear 505 and the transmission ratio between the positioning gear 505 and the inner gear ring of the indicating disk 502, the rotational motion can be transmitted to the indicating disk 502 and the rotation speed can be changed at the same time, so that when the driving gear 504 (guide wire 1) rotates one circle, the indicating disk 502 only rotates through a certain angle, and the rotation angle of the indicating disk 502 is displayed by the indicating mark 508, and then the number of rotations of the guide wire 1 can be displayed, thereby realizing reliable observation and control of the number of rotations of the suture nail 4.

[0122] Example 2

[0123] A specific embodiment of the present invention, as Fig.15 , Fig.16 As shown, an alternative solution of the suture staple 4 in embodiment 1 is provided, the difference being that:

[0124] The suture staple 4 of this embodiment is not provided with a threading hole 405 ; in this embodiment, two thread retaining grooves 410 are symmetrically provided on the upper sleeve 401 .

[0125] Specifically, Fig.15 , Fig.16 As shown, the wire groove 410 includes: a longitudinal wire groove 4101 and an arcuate wire groove 4102; wherein, the longitudinal wire groove 4101 extends along the axial direction of the upper sleeve 401, and the arcuate wire groove 4102 is arranged at the bottom of the longitudinal wire groove 4101, one end of the arcuate wire groove 4102 is connected to the lowest end of the longitudinal wire groove 4101, and the other end of the arcuate wire groove 4102 extends upward and is higher than the lowest end of the longitudinal wire groove 4101.

[0126] Furthermore, two arc-shaped wire grooves 4102 are symmetrically arranged at the bottom end of the longitudinal wire groove 4101, so that the wire groove 410 is an inverted Y-shaped structure as a whole. Fig.16 shown.

[0127] During implementation, the suture staples 4 are rotated and nailed into the outer tissue of the wound to be sutured in sequence. Further, the suture thread 3 is pressed downward into the wire clamping groove 410 of two adjacent suture staples 4 in sequence. After the suture thread 3 is clamped into the wire clamping groove 410, the suture thread 3 is pulled sideways to make it slide along the arc-shaped wire groove 4102 to the highest end. Pulling the suture thread 3 can reduce the distance between the two adjacent suture staples 4, thereby achieving the reduction of the large wound surface.

[0128] By repeating the above process, multiple suture staples 4 can be connected through the suture thread 3. After the suture thread 3 is inserted into the arc-shaped groove 4102, due to the tensioning effect of the suture thread 3, the suture thread 3 is clamped at the highest end of the arc-shaped groove 4102 to avoid detachment from the suture staple 4. After the wound surface is contracted, the suture thread 3 is wrapped and bound to the end suture staple 4 to keep it fixed, thereby achieving suturing of the contracted large wound surface.

[0129] Compared with the prior art, the embodiments of the present invention have at least one of the following beneficial effects:

[0130] The suturing device of the present embodiment is designed to separate the suture 3 from the suture staple 4, so that interference of the suture 3 can be avoided when the suture staple 4 is screwed in, screwed out, released, etc. After the suture staple 4 of the present embodiment is screwed into the human tissue, the large wound surface can be reduced by clamping the suture 3 in the clamping groove 410 and tightening the suture 3, thus realizing "first nailing, then winding", which is simple and convenient to operate and can effectively shrink the large wound surface.

[0131] Example 3

[0132] A specific embodiment of the present invention provides an alternative to the suture staple 4 in Embodiment 1. The suture staple 4 in this embodiment differs from the suture staple 4 in Embodiment 1 in that:

[0133] In this embodiment, the threading hole 405 is disposed at the center of the rotating portion 402 , and the threading hole 405 passes through the rotating portion 402 and the bottom surface of the engaging portion 403 .

[0134] Correspondingly, in this embodiment, if Fig.17 As shown, the guide wire 1 is configured as a hollow circular tube structure, one end of the suture thread 3 is connected to the suture staple 4 at the end, and multiple suture staples 4 are connected in sequence and the other end can pass through the upper end of the guide wire 1 .

[0135] Preferably, a wire outlet groove is provided on the side of the upper sleeve 401, and when the second suture nail 4 is screwed, the suture thread 3 is led out from the wire outlet groove; in this embodiment, by providing the wire outlet groove, the height difference of the suture thread 3 at the multiple suture nails 4 is reduced, so that the height of the suture thread 3 tends to be consistent, which is convenient for tightening.

[0136] In this embodiment, by setting the threading hole 405 at the center of the screw-on portion 402, it is achieved that when the suture staple 4 rotates, the suture thread 3 will not rotate synchronously with the suture staple 4. The suture thread 3 is in a taut state, and the rotation of the suture staple 4 can screw the screw-on portion 404 into the human tissue. The suture thread 3 and the suture staple 4 rotate relative to each other to prevent the suture staple 4 from being entangled, and at the same time, the screw-on portion 402 is screwed out from the bottom end of the outer sleeve 2; after the first suture staple 4 is nailed in, when the second suture staple 4 is installed, the suture thread 3 is first led out from the wire outlet groove, so that the suture thread 3 and the wound surface are kept as horizontal as possible; after multiple (at least two) suture staples 4 are screwed into the tissue, the suture thread 3 is located on the upper surface of the tissue, and then by tightening the suture thread 3, the distance between the multiple suture staples 4 can be shortened, thereby reducing the large wound surface.

[0137] Example 4

[0138] A specific embodiment of the present invention is further improved on the basis of embodiment 1:

[0139] like Fig.18 , Fig.19 As shown, in this embodiment, the suturing device further comprises: a thread holder 6, wherein the thread holder 6 is passed on the suture 3 to limit the movement of the suture 3 and prevent the suture from retracting after being tightened.

[0140] like Fig.18 , Fig.19 As shown, the wire holder 6 is cylindrical, and a plurality of limiting cone rings 601 are arranged inside, and a plurality of linear grooves 602 are arranged on the limiting cone rings 601; the large end of the limiting cone ring 601 is fixed as a whole with the cylindrical outer shell of the wire holder 6, and the small end diameter of the limiting cone ring 601 can allow the suture to pass through, and the suture 3 can slide unidirectionally in the limiting cone ring 601 and be reversely locked.

[0141] Specifically, there are a plurality of linear slots 602 , and the plurality of linear slots 602 are arranged at equal intervals on the small end of the limiting cone ring 601 .

[0142] During implementation, when the suture 3 is inserted into the thread holder 6, the small end of the limiting cone ring 601 is slightly deformed, and the opening of the linear groove 602 is expanded, allowing the suture 3 to slide unidirectionally in the thread holder 6; when the suture 3 slides in the reverse direction in the thread holder 6, it will be limited by the small end of the limiting cone ring 601. Due to the structural characteristics of the suture 3 itself, the fine fiber structure of the suture 3 will promote the contraction of the small end of the limiting cone ring 601, thereby achieving reverse locking.

[0143] Furthermore, in order to ensure that the limiting cone ring 601 can stop the suture thread 3, a plurality of limiting cone rings 601 are arranged at equal intervals inside the cylindrical shell of the thread holder 6 along its own axial direction.

[0144] After the large wound surface is tightened by multiple suture staples 4, the thread holder 6 is placed on the outside of the suture thread 3, and then the thread holder 6 is slid to the last suture staple 4 after tightening through the guide wire 1 or the metal titanium clip (clamping the thread holder 6) to prevent the tightened wound surface from expanding again.

[0145] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A large wound suturing device with multiple nails continuously tightened, characterized in that: include: A guide wire (1), an outer sleeve (2), a suture thread (3), a suture staple (4) and an indication component (5); The end of the outer sleeve (2) is provided with a threaded section; the threaded section is provided with an internal thread (201); the suture nail (4) is arranged inside the outer sleeve (2) and can be screwed together with the internal thread (201); A plurality of suture staples (4) are provided, and the plurality of suture staples (4) are mutually nested and installed from top to bottom and are capable of synchronous rotation; The guide wire (1) can be inserted into the interior of the outer sleeve (2), and a driving boss (102) is provided at the end of the guide wire (1); the driving boss (102) can engage with the uppermost suture nail (4), and when the guide wire (1) rotates, it can drive the suture nail (4) to rotate; The end of the suture staple (4) is provided with a screw-on portion (404), and when the suture staple (4) is rotated, the screw-on portion (404) can be screwed into the tissue to be sutured; the suture thread (3) is connected between a plurality of suture staples (4), and a plurality of suture staples (4) can be connected in series; The release of the suture staple (4) from the outer sleeve (2) is performed synchronously with the screwing of the suture staple (4) into the human tissue; The indicating assembly (5) is arranged at the end of the outer sleeve (2), and when the guide wire (1) rotates, the number of rotations can be displayed through the indicating assembly (5); the indicating assembly (5) comprises: a dial (501), an indicating disc (502), a driving gear (504) and a positioning gear (505).

2. The large wound suturing device with multiple nails continuously tightened according to claim 1 is characterized in that: The guide wire (1) can be embedded in the driving gear (504) and drive the driving gear (504) to rotate; the driving gear (504) can drive the indicating disk (502) to rotate through the positioning gear (505); The indicator disk (502) is rotatably mounted above the scale disk (501), and an indicator mark (508) is arranged on the top of the indicator disk (502); when the indicator disk (502) rotates, the number of rotations of the guide wire (1) is displayed through the scale on the scale disk (501) corresponding to the indicator mark (508).

3. The large wound suturing device with multiple nails continuously tightened according to claim 2, characterized in that: An inner gear ring (5022) is provided on the inner side of the indicator disc (502); the inner gear ring (5022) meshes with the positioning gear (505), and the positioning gear (505) meshes with the driving gear (504); when the guide wire (1) drives the driving gear (504) to rotate, the indicator disc (502) rotates synchronously.

4. The large wound suturing device with multiple nails continuously tightened according to claim 3 is characterized in that: The transmission ratio between the inner gear ring (5022) and the driving gear (504) is less than 1.

5. The large wound suturing device with multiple nails continuously tightened according to any one of claims 2 to 4, characterized in that: The indicating plate (502) comprises: an upper cover plate (5021) and an inner gear ring (5022); the upper cover plate (5021) is fixedly mounted above the inner gear ring (5022).

6. The large wound suturing device with multiple nails continuously tightened according to claim 2, characterized in that: The edge of the upper surface of the dial (501) is provided with scales for displaying the number of revolutions of the guide wire (1).

7. The large wound suturing device with multiple nails continuously tightened according to claim 2, characterized in that: A positioning plate (503) is also fixedly arranged on the upper surface of the scale plate (501), and a guide wire through hole (509) is arranged in the middle of both, and the guide wire through hole (509) is used to allow the guide wire (1) to pass through.

8. The large wound suturing device with multiple nails continuously tightened according to claim 7, characterized in that: The positioning gear (505) is rotatably mounted on the positioning disk (503); three positioning gears (505) are provided and are arranged at equal intervals in the circumferential direction above the scale disk (501); the driving gear (504) is arranged in the center of the three positioning gears (505) and meshes with the three positioning gears (505) at the same time.

9. The large wound suturing device with multiple nails continuously tightened according to claim 1, characterized in that: The outer end of the guide wire (1) is provided with a guide wire handle (104).

10. The large wound suturing device with multiple nails continuously tightened according to claim 1, characterized in that: The outer end of the outer sleeve (2) is provided with a sleeve handle (202).

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